configure

   1 #!/bin/sh
   2 #
   3 # FFmpeg configure script
   4 #
   5 # Copyright (c) 2000-2002 Fabrice Bellard
   6 # Copyright (c) 2005-2008 Diego Biurrun
   7 # Copyright (c) 2005-2008 Mans Rullgard
   8 #
   9
  10 # Prevent locale nonsense from breaking basic text processing.
  11 LC_ALL=C
  12 export LC_ALL
  13
  14 # make sure we are running under a compatible shell
  15 # try to make this part work with most shells
  16
  17 try_exec(){
  18     echo "Trying shell $1"
  19     type "$1" > /dev/null 2>&1 && exec "$@"
  20 }
  21
  22 unset foo
  23 (: ${foo%%bar}) 2> /dev/null
  24 E1="$?"
  25
  26 (: ${foo?}) 2> /dev/null
  27 E2="$?"
  28
  29 if test "$E1" != 0 || test "$E2" = 0; then
  30     echo "Broken shell detected.  Trying alternatives."
  31     export FF_CONF_EXEC
  32     if test "0$FF_CONF_EXEC" -lt 1; then
  33         FF_CONF_EXEC=1
  34         try_exec bash "$0" "$@"
  35     fi
  36     if test "0$FF_CONF_EXEC" -lt 2; then
  37         FF_CONF_EXEC=2
  38         try_exec ksh "$0" "$@"
  39     fi
  40     if test "0$FF_CONF_EXEC" -lt 3; then
  41         FF_CONF_EXEC=3
  42         try_exec /usr/xpg4/bin/sh "$0" "$@"
  43     fi
  44     echo "No compatible shell script interpreter found."
  45     echo "This configure script requires a POSIX-compatible shell"
  46     echo "such as bash or ksh."
  47     echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
  48     echo "Instead, install a working POSIX-compatible shell."
  49     echo "Disabling this configure test will create a broken FFmpeg."
  50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
  51         echo "This bash version ($BASH_VERSION) is broken on your platform."
  52         echo "Upgrade to a later version if available."
  53     fi
  54     exit 1
  55 fi
  56
  57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
  58
  59 show_help(){
  60     cat <<EOF
  61 Usage: configure [options]
  62 Options: [defaults in brackets after descriptions]
  63
  64 Help options:
  65   --help                   print this message
  66   --quiet                  Suppress showing informative output
  67   --list-decoders          show all available decoders
  68   --list-encoders          show all available encoders
  69   --list-hwaccels          show all available hardware accelerators
  70   --list-demuxers          show all available demuxers
  71   --list-muxers            show all available muxers
  72   --list-parsers           show all available parsers
  73   --list-protocols         show all available protocols
  74   --list-bsfs              show all available bitstream filters
  75   --list-indevs            show all available input devices
  76   --list-outdevs           show all available output devices
  77   --list-filters           show all available filters
  78
  79 Standard options:
  80   --logfile=FILE           log tests and output to FILE [ffbuild/config.log]
  81   --disable-logging        do not log configure debug information
  82   --fatal-warnings         fail if any configure warning is generated
  83   --prefix=PREFIX          install in PREFIX [$prefix_default]
  84   --bindir=DIR             install binaries in DIR [PREFIX/bin]
  85   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
  86   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
  87   --libdir=DIR             install libs in DIR [PREFIX/lib]
  88   --shlibdir=DIR           install shared libs in DIR [LIBDIR]
  89   --incdir=DIR             install includes in DIR [PREFIX/include]
  90   --mandir=DIR             install man page in DIR [PREFIX/share/man]
  91   --pkgconfigdir=DIR       install pkg-config files in DIR [LIBDIR/pkgconfig]
  92   --enable-rpath           use rpath to allow installing libraries in paths
  93                            not part of the dynamic linker search path
  94                            use rpath when linking programs (USE WITH CARE)
  95   --install-name-dir=DIR   Darwin directory name for installed targets
  96
  97 Licensing options:
  98   --enable-gpl             allow use of GPL code, the resulting libs
  99                            and binaries will be under GPL [no]
 100   --enable-version3        upgrade (L)GPL to version 3 [no]
 101   --enable-nonfree         allow use of nonfree code, the resulting libs
 102                            and binaries will be unredistributable [no]
 103
 104 Configuration options:
 105   --disable-static         do not build static libraries [no]
 106   --enable-shared          build shared libraries [no]
 107   --enable-small           optimize for size instead of speed
 108   --disable-runtime-cpudetect disable detecting CPU capabilities at runtime (smaller binary)
 109   --enable-gray            enable full grayscale support (slower color)
 110   --disable-swscale-alpha  disable alpha channel support in swscale
 111   --disable-all            disable building components, libraries and programs
 112
 113 Program options:
 114   --disable-programs       do not build command line programs
 115   --disable-ffmpeg         disable ffmpeg build
 116   --disable-ffplay         disable ffplay build
 117   --disable-ffprobe        disable ffprobe build
 118   --disable-ffserver       disable ffserver build
 119
 120 Documentation options:
 121   --disable-doc            do not build documentation
 122   --disable-htmlpages      do not build HTML documentation pages
 123   --disable-manpages       do not build man documentation pages
 124   --disable-podpages       do not build POD documentation pages
 125   --disable-txtpages       do not build text documentation pages
 126
 127 Component options:
 128   --disable-avdevice       disable libavdevice build
 129   --disable-avcodec        disable libavcodec build
 130   --disable-avformat       disable libavformat build
 131   --disable-swresample     disable libswresample build
 132   --disable-swscale        disable libswscale build
 133   --disable-postproc       disable libpostproc build
 134   --disable-avfilter       disable libavfilter build
 135   --enable-avresample      enable libavresample build [no]
 136   --disable-pthreads       disable pthreads [autodetect]
 137   --disable-w32threads     disable Win32 threads [autodetect]
 138   --disable-os2threads     disable OS/2 threads [autodetect]
 139   --disable-network        disable network support [no]
 140   --disable-dct            disable DCT code
 141   --disable-dwt            disable DWT code
 142   --disable-error-resilience disable error resilience code
 143   --disable-lsp            disable LSP code
 144   --disable-lzo            disable LZO decoder code
 145   --disable-mdct           disable MDCT code
 146   --disable-rdft           disable RDFT code
 147   --disable-fft            disable FFT code
 148   --disable-faan           disable floating point AAN (I)DCT code
 149   --disable-pixelutils     disable pixel utils in libavutil
 150
 151 Individual component options:
 152   --disable-everything     disable all components listed below
 153   --disable-encoder=NAME   disable encoder NAME
 154   --enable-encoder=NAME    enable encoder NAME
 155   --disable-encoders       disable all encoders
 156   --disable-decoder=NAME   disable decoder NAME
 157   --enable-decoder=NAME    enable decoder NAME
 158   --disable-decoders       disable all decoders
 159   --disable-hwaccel=NAME   disable hwaccel NAME
 160   --enable-hwaccel=NAME    enable hwaccel NAME
 161   --disable-hwaccels       disable all hwaccels
 162   --disable-muxer=NAME     disable muxer NAME
 163   --enable-muxer=NAME      enable muxer NAME
 164   --disable-muxers         disable all muxers
 165   --disable-demuxer=NAME   disable demuxer NAME
 166   --enable-demuxer=NAME    enable demuxer NAME
 167   --disable-demuxers       disable all demuxers
 168   --enable-parser=NAME     enable parser NAME
 169   --disable-parser=NAME    disable parser NAME
 170   --disable-parsers        disable all parsers
 171   --enable-bsf=NAME        enable bitstream filter NAME
 172   --disable-bsf=NAME       disable bitstream filter NAME
 173   --disable-bsfs           disable all bitstream filters
 174   --enable-protocol=NAME   enable protocol NAME
 175   --disable-protocol=NAME  disable protocol NAME
 176   --disable-protocols      disable all protocols
 177   --enable-indev=NAME      enable input device NAME
 178   --disable-indev=NAME     disable input device NAME
 179   --disable-indevs         disable input devices
 180   --enable-outdev=NAME     enable output device NAME
 181   --disable-outdev=NAME    disable output device NAME
 182   --disable-outdevs        disable output devices
 183   --disable-devices        disable all devices
 184   --enable-filter=NAME     enable filter NAME
 185   --disable-filter=NAME    disable filter NAME
 186   --disable-filters        disable all filters
 187
 188 External library support:
 189
 190   Using any of the following switches will allow FFmpeg to link to the
 191   corresponding external library. All the components depending on that library
 192   will become enabled, if all their other dependencies are met and they are not
 193   explicitly disabled. E.g. --enable-libwavpack will enable linking to
 194   libwavpack and allow the libwavpack encoder to be built, unless it is
 195   specifically disabled with --disable-encoder=libwavpack.
 196
 197   Note that only the system libraries are auto-detected. All the other external
 198   libraries must be explicitly enabled.
 199
 200   Also note that the following help text describes the purpose of the libraries
 201   themselves, not all their features will necessarily be usable by FFmpeg.
 202
 203   --enable-avisynth        enable reading of AviSynth script files [no]
 204   --disable-bzlib          disable bzlib [autodetect]
 205   --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
 206   --enable-frei0r          enable frei0r video filtering [no]
 207   --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
 208                            if openssl, librtmp or gmp is not used [no]
 209   --enable-gmp             enable gmp, needed for rtmp(t)e support
 210                            if openssl or librtmp is not used [no]
 211   --enable-gnutls          enable gnutls, needed for https support
 212                            if openssl is not used [no]
 213   --disable-iconv          disable iconv [autodetect]
 214   --enable-jni             enable JNI support [no]
 215   --enable-ladspa          enable LADSPA audio filtering [no]
 216   --enable-libass          enable libass subtitles rendering,
 217                            needed for subtitles and ass filter [no]
 218   --enable-libbluray       enable BluRay reading using libbluray [no]
 219   --enable-libbs2b         enable bs2b DSP library [no]
 220   --enable-libcaca         enable textual display using libcaca [no]
 221   --enable-libcelt         enable CELT decoding via libcelt [no]
 222   --enable-libcdio         enable audio CD grabbing with libcdio [no]
 223   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 224                            and libraw1394 [no]
 225   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 226   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 227   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
 228   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
 229   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
 230   --enable-libgme          enable Game Music Emu via libgme [no]
 231   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 232   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 233   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 234   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
 235   --enable-libmodplug      enable ModPlug via libmodplug [no]
 236   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 237   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 238   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 239   --enable-libopencv       enable video filtering via libopencv [no]
 240   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 241   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 242   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
 243   --enable-libopus         enable Opus de/encoding via libopus [no]
 244   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 245   --enable-librsvg         enable SVG rasterization via librsvg [no]
 246   --enable-librubberband   enable rubberband needed for rubberband filter [no]
 247   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 248   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 249   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 250   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
 251   --enable-libsoxr         enable Include libsoxr resampling [no]
 252   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 253   --enable-libssh          enable SFTP protocol via libssh [no]
 254   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
 255   --enable-libtheora       enable Theora encoding via libtheora [no]
 256   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 257   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 258   --enable-libvidstab      enable video stabilization using vid.stab [no]
 259   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 260   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 261                            native implementation exists [no]
 262   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 263   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 264   --enable-libwebp         enable WebP encoding via libwebp [no]
 265   --enable-libx264         enable H.264 encoding via x264 [no]
 266   --enable-libx265         enable HEVC encoding via x265 [no]
 267   --enable-libxavs         enable AVS encoding via xavs [no]
 268   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
 269   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
 270   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
 271   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
 272   --enable-libxvid         enable Xvid encoding via xvidcore,
 273                            native MPEG-4/Xvid encoder exists [no]
 274   --enable-libzimg         enable z.lib, needed for zscale filter [no]
 275   --enable-libzmq          enable message passing via libzmq [no]
 276   --enable-libzvbi         enable teletext support via libzvbi [no]
 277   --disable-lzma           disable lzma [autodetect]
 278   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
 279   --enable-mediacodec      enable Android MediaCodec support [no]
 280   --enable-netcdf          enable NetCDF, needed for sofalizer filter [no]
 281   --enable-openal          enable OpenAL 1.1 capture support [no]
 282   --enable-opencl          enable OpenCL code
 283   --enable-opengl          enable OpenGL rendering [no]
 284   --enable-openssl         enable openssl, needed for https support
 285                            if gnutls is not used [no]
 286   --disable-schannel       disable SChannel SSP, needed for TLS support on
 287                            Windows if openssl and gnutls are not used [autodetect]
 288   --disable-sdl2           disable sdl2 [autodetect]
 289   --disable-securetransport disable Secure Transport, needed for TLS support
 290                            on OSX if openssl and gnutls are not used [autodetect]
 291   --disable-xlib           disable xlib [autodetect]
 292   --disable-zlib           disable zlib [autodetect]
 293
 294   The following libraries provide various hardware acceleration features:
 295   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
 296   --disable-cuda           disable dynamically linked Nvidia CUDA code [autodetect]
 297   --enable-cuda-sdk        enable CUDA features that require the CUDA SDK [no]
 298   --disable-cuvid          disable Nvidia CUVID support [autodetect]
 299   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
 300   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
 301   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
 302   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
 303   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
 304   --disable-nvenc          disable Nvidia video encoding code [autodetect]
 305   --enable-omx             enable OpenMAX IL code [no]
 306   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
 307   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
 308   --disable-vda            disable Apple Video Decode Acceleration code [autodetect]
 309   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
 310   --disable-videotoolbox   disable VideoToolbox code [autodetect]
 311
 312 Toolchain options:
 313   --arch=ARCH              select architecture [$arch]
 314   --cpu=CPU                select the minimum required CPU (affects
 315                            instruction selection, may crash on older CPUs)
 316   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 317   --progs-suffix=SUFFIX    program name suffix []
 318   --enable-cross-compile   assume a cross-compiler is used
 319   --sysroot=PATH           root of cross-build tree
 320   --sysinclude=PATH        location of cross-build system headers
 321   --target-os=OS           compiler targets OS [$target_os]
 322   --target-exec=CMD        command to run executables on target
 323   --target-path=DIR        path to view of build directory on target
 324   --target-samples=DIR     path to samples directory on target
 325   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 326   --toolchain=NAME         set tool defaults according to NAME
 327   --nm=NM                  use nm tool NM [$nm_default]
 328   --ar=AR                  use archive tool AR [$ar_default]
 329   --as=AS                  use assembler AS [$as_default]
 330   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
 331   --strip=STRIP            use strip tool STRIP [$strip_default]
 332   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 333   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
 334   --cc=CC                  use C compiler CC [$cc_default]
 335   --cxx=CXX                use C compiler CXX [$cxx_default]
 336   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 337   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 338   --nvcc=NVCC              use Nvidia CUDA compiler NVCC [$nvcc_default]
 339   --ld=LD                  use linker LD [$ld_default]
 340   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 341   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 342   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 343   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 344   --host-cc=HOSTCC         use host C compiler HOSTCC
 345   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 346   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 347   --host-ld=HOSTLD         use host linker HOSTLD
 348   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 349   --host-libs=HLIBS        use libs HLIBS when linking for host
 350   --host-os=OS             compiler host OS [$target_os]
 351   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 352   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 353   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 354   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 355   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 356   --extra-ldlibflags=ELDFLAGS add ELDFLAGS to LDLIBFLAGS [$LDLIBFLAGS]
 357   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 358   --extra-version=STRING   version string suffix []
 359   --optflags=OPTFLAGS      override optimization-related compiler flags
 360   --nvccflags=NVCCFLAGS    override nvcc flags [$nvccflags_default]
 361   --build-suffix=SUFFIX    library name suffix []
 362   --enable-pic             build position-independent code
 363   --enable-thumb           compile for Thumb instruction set
 364   --enable-lto             use link-time optimization
 365   --env="ENV=override"     override the environment variables
 366
 367 Advanced options (experts only):
 368   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 369   --custom-allocator=NAME  use a supported custom allocator
 370   --disable-symver         disable symbol versioning
 371   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 372   --disable-safe-bitstream-reader
 373                            disable buffer boundary checking in bitreaders
 374                            (faster, but may crash)
 375   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 376
 377 Optimization options (experts only):
 378   --disable-asm            disable all assembly optimizations
 379   --disable-altivec        disable AltiVec optimizations
 380   --disable-vsx            disable VSX optimizations
 381   --disable-power8         disable POWER8 optimizations
 382   --disable-amd3dnow       disable 3DNow! optimizations
 383   --disable-amd3dnowext    disable 3DNow! extended optimizations
 384   --disable-mmx            disable MMX optimizations
 385   --disable-mmxext         disable MMXEXT optimizations
 386   --disable-sse            disable SSE optimizations
 387   --disable-sse2           disable SSE2 optimizations
 388   --disable-sse3           disable SSE3 optimizations
 389   --disable-ssse3          disable SSSE3 optimizations
 390   --disable-sse4           disable SSE4 optimizations
 391   --disable-sse42          disable SSE4.2 optimizations
 392   --disable-avx            disable AVX optimizations
 393   --disable-xop            disable XOP optimizations
 394   --disable-fma3           disable FMA3 optimizations
 395   --disable-fma4           disable FMA4 optimizations
 396   --disable-avx2           disable AVX2 optimizations
 397   --disable-aesni          disable AESNI optimizations
 398   --disable-armv5te        disable armv5te optimizations
 399   --disable-armv6          disable armv6 optimizations
 400   --disable-armv6t2        disable armv6t2 optimizations
 401   --disable-vfp            disable VFP optimizations
 402   --disable-neon           disable NEON optimizations
 403   --disable-inline-asm     disable use of inline assembly
 404   --disable-yasm           disable use of nasm/yasm assembly
 405   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
 406   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 407   --disable-msa            disable MSA optimizations
 408   --disable-mipsfpu        disable floating point MIPS optimizations
 409   --disable-mmi            disable Loongson SIMD optimizations
 410   --disable-fast-unaligned consider unaligned accesses slow
 411
 412 Developer options (useful when working on FFmpeg itself):
 413   --disable-debug          disable debugging symbols
 414   --enable-debug=LEVEL     set the debug level [$debuglevel]
 415   --disable-optimizations  disable compiler optimizations
 416   --enable-extra-warnings  enable more compiler warnings
 417   --disable-stripping      disable stripping of executables and shared libraries
 418   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 419                            2 causes a slowdown at runtime.
 420   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 421   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 422                            leaks and errors, using the specified valgrind binary.
 423                            Cannot be combined with --target-exec
 424   --enable-ftrapv          Trap arithmetic overflows
 425   --samples=PATH           location of test samples for FATE, if not set use
 426                            \$FATE_SAMPLES at make invocation time.
 427   --enable-neon-clobber-test check NEON registers for clobbering (should be
 428                            used only for debugging purposes)
 429   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 430                            should be used only for debugging purposes)
 431   --enable-random          randomly enable/disable components
 432   --disable-random
 433   --enable-random=LIST     randomly enable/disable specific components or
 434   --disable-random=LIST    component groups. LIST is a comma-separated list
 435                            of NAME[:PROB] entries where NAME is a component
 436                            (group) and PROB the probability associated with
 437                            NAME (default 0.5).
 438   --random-seed=VALUE      seed value for --enable/disable-random
 439   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 440                            (only applies to --disable-optimizations builds)
 441   --enable-osfuzz          Enable building fuzzer tool
 442   --libfuzzer=PATH         path to libfuzzer
 443   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
 444                            in the name) of tests whose result is ignored
 445
 446 NOTE: Object files are built at the place where configure is launched.
 447 EOF
 448   exit 0
 449 }
 450
 451 quotes='""'
 452 if test -t 1 && which tput >/dev/null 2>&1; then
 453     ncolors=$(tput colors)
 454     if test -n "$ncolors" && test $ncolors -ge 8; then
 455         bold_color=$(tput bold)
 456         warn_color=$(tput setaf 3)
 457         error_color=$(tput setaf 1)
 458         reset_color=$(tput sgr0)
 459     fi
 460     # 72 used instead of 80 since that's the default of pr
 461     ncols=$(tput cols)
 462 fi
 463 : ${ncols:=72}
 464
 465 log(){
 466     echo "$@" >> $logfile
 467 }
 468
 469 log_file(){
 470     log BEGIN $1
 471     pr -n -t $1 >> $logfile
 472     log END $1
 473 }
 474
 475 warn(){
 476     log "WARNING: $*"
 477     WARNINGS="${WARNINGS}WARNING: $*\n"
 478 }
 479
 480 die(){
 481     log "$@"
 482     echo "$error_color$bold_color$@$reset_color"
 483     cat <<EOF
 484
 485 If you think configure made a mistake, make sure you are using the latest
 486 version from Git.  If the latest version fails, report the problem to the
 487 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 488 EOF
 489     if disabled logging; then
 490         cat <<EOF
 491 Rerun configure with logging enabled (do not use --disable-logging), and
 492 include the log this produces with your report.
 493 EOF
 494     else
 495         cat <<EOF
 496 Include the log file "$logfile" produced by configure as this will help
 497 solve the problem.
 498 EOF
 499     fi
 500     exit 1
 501 }
 502
 503 # Avoid locale weirdness, besides we really just want to translate ASCII.
 504 toupper(){
 505     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 506 }
 507
 508 tolower(){
 509     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 510 }
 511
 512 c_escape(){
 513     echo "$*" | sed 's/["\\]/\\\0/g'
 514 }
 515
 516 sh_quote(){
 517     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 518     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 519     echo "$v"
 520 }
 521
 522 cleanws(){
 523     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 524 }
 525
 526 filter(){
 527     pat=$1
 528     shift
 529     for v; do
 530         eval "case $v in $pat) printf '%s ' $v ;; esac"
 531     done
 532 }
 533
 534 filter_out(){
 535     pat=$1
 536     shift
 537     for v; do
 538         eval "case $v in $pat) ;; *) printf '%s ' $v ;; esac"
 539     done
 540 }
 541
 542 map(){
 543     m=$1
 544     shift
 545     for v; do eval $m; done
 546 }
 547
 548 add_suffix(){
 549     suffix=$1
 550     shift
 551     for v; do echo ${v}${suffix}; done
 552 }
 553
 554 set_all(){
 555     value=$1
 556     shift
 557     for var in $*; do
 558         eval $var=$value
 559     done
 560 }
 561
 562 set_weak(){
 563     value=$1
 564     shift
 565     for var; do
 566         eval : \${$var:=$value}
 567     done
 568 }
 569
 570 sanitize_var_name(){
 571     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 572 }
 573
 574 set_safe(){
 575     var=$1
 576     shift
 577     eval $(sanitize_var_name "$var")='$*'
 578 }
 579
 580 get_safe(){
 581     eval echo \$$(sanitize_var_name "$1")
 582 }
 583
 584 pushvar(){
 585     for pvar in $*; do
 586         eval level=\${${pvar}_level:=0}
 587         eval ${pvar}_${level}="\$$pvar"
 588         eval ${pvar}_level=$(($level+1))
 589     done
 590 }
 591
 592 popvar(){
 593     for pvar in $*; do
 594         eval level=\${${pvar}_level:-0}
 595         test $level = 0 && continue
 596         eval level=$(($level-1))
 597         eval $pvar="\${${pvar}_${level}}"
 598         eval ${pvar}_level=$level
 599         eval unset ${pvar}_${level}
 600     done
 601 }
 602
 603 request(){
 604     for var in $*; do
 605         eval ${var}_requested=yes
 606         eval $var=
 607     done
 608 }
 609
 610 enable(){
 611     set_all yes $*
 612 }
 613
 614 disable(){
 615     set_all no $*
 616 }
 617
 618 enable_weak(){
 619     set_weak yes $*
 620 }
 621
 622 disable_weak(){
 623     set_weak no $*
 624 }
 625
 626 enable_safe(){
 627     for var; do
 628         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 629     done
 630 }
 631
 632 disable_safe(){
 633     for var; do
 634         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 635     done
 636 }
 637
 638 do_enable_deep(){
 639     for var; do
 640         enabled $var && continue
 641         eval sel="\$${var}_select"
 642         eval sgs="\$${var}_suggest"
 643         pushvar var sgs
 644         enable_deep $sel
 645         popvar sgs
 646         enable_deep_weak $sgs
 647         popvar var
 648     done
 649 }
 650
 651 enable_deep(){
 652     do_enable_deep $*
 653     enable $*
 654 }
 655
 656 enable_deep_weak(){
 657     for var; do
 658         disabled $var && continue
 659         pushvar var
 660         do_enable_deep $var
 661         popvar var
 662         enable_weak $var
 663     done
 664 }
 665
 666 requested(){
 667     test "${1#!}" = "$1" && op='=' || op=!=
 668     eval test "x\$${1#!}_requested" $op "xyes"
 669 }
 670
 671 enabled(){
 672     test "${1#!}" = "$1" && op='=' || op=!=
 673     eval test "x\$${1#!}" $op "xyes"
 674 }
 675
 676 disabled(){
 677     test "${1#!}" = "$1" && op='=' || op=!=
 678     eval test "x\$${1#!}" $op "xno"
 679 }
 680
 681 enabled_all(){
 682     for opt; do
 683         enabled $opt || return 1
 684     done
 685 }
 686
 687 disabled_all(){
 688     for opt; do
 689         disabled $opt || return 1
 690     done
 691 }
 692
 693 enabled_any(){
 694     for opt; do
 695         enabled $opt && return 0
 696     done
 697 }
 698
 699 disabled_any(){
 700     for opt; do
 701         disabled $opt && return 0
 702     done
 703     return 1
 704 }
 705
 706 set_default(){
 707     for opt; do
 708         eval : \${$opt:=\$${opt}_default}
 709     done
 710 }
 711
 712 is_in(){
 713     value=$1
 714     shift
 715     for var in $*; do
 716         [ $var = $value ] && return 0
 717     done
 718     return 1
 719 }
 720
 721 do_check_deps(){
 722     for cfg; do
 723         cfg="${cfg#!}"
 724         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 725         disabled ${cfg}_checking && continue
 726         enable ${cfg}_checking
 727         append allopts $cfg
 728
 729         eval dep_all="\$${cfg}_deps"
 730         eval dep_any="\$${cfg}_deps_any"
 731         eval dep_sel="\$${cfg}_select"
 732         eval dep_sgs="\$${cfg}_suggest"
 733         eval dep_ifa="\$${cfg}_if"
 734         eval dep_ifn="\$${cfg}_if_any"
 735
 736         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 737         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
 738         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 739
 740         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 741         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 742         enabled_all  $dep_all || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not all dependencies are satisfied: $dep_all"; }
 743         enabled_any  $dep_any || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not any dependency is satisfied: $dep_any"; }
 744         disabled_any $dep_sel && { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some selected dependency is unsatisfied: $dep_sel"; }
 745
 746         if enabled $cfg; then
 747             enable_deep $dep_sel
 748             enable_deep_weak $dep_sgs
 749         fi
 750
 751         disable ${cfg}_checking
 752     done
 753 }
 754
 755 check_deps(){
 756     unset allopts
 757
 758     do_check_deps "$@"
 759
 760     for cfg in $allopts; do
 761         enabled $cfg || continue
 762         eval dep_extralibs="\$${cfg}_extralibs"
 763         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
 764     done
 765 }
 766
 767 print_config(){
 768     pfx=$1
 769     files=$2
 770     shift 2
 771     map 'eval echo "$v \${$v:-no}"' "$@" |
 772     awk "BEGIN { split(\"$files\", files) }
 773         {
 774             c = \"$pfx\" toupper(\$1);
 775             v = \$2;
 776             sub(/yes/, 1, v);
 777             sub(/no/,  0, v);
 778             for (f in files) {
 779                 file = files[f];
 780                 if (file ~ /\\.h\$/) {
 781                     printf(\"#define %s %d\\n\", c, v) >>file;
 782                 } else if (file ~ /\\.asm\$/) {
 783                     printf(\"%%define %s %d\\n\", c, v) >>file;
 784                 } else if (file ~ /\\.mak\$/) {
 785                     n = -v ? \"\" : \"!\";
 786                     printf(\"%s%s=yes\\n\", n, c) >>file;
 787                 } else if (file ~ /\\.texi\$/) {
 788                     pre = -v ? \"\" : \"@c \";
 789                     yesno = \$2;
 790                     c2 = tolower(c);
 791                     gsub(/_/, \"-\", c2);
 792                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 793                 }
 794             }
 795         }"
 796 }
 797
 798 print_enabled(){
 799     suf=$1
 800     shift
 801     for v; do
 802         enabled $v && printf "%s\n" ${v%$suf}
 803     done
 804 }
 805
 806 append(){
 807     var=$1
 808     shift
 809     eval "$var=\"\$$var $*\""
 810 }
 811
 812 prepend(){
 813     var=$1
 814     shift
 815     eval "$var=\"$* \$$var\""
 816 }
 817
 818 unique(){
 819     var=$1
 820     uniq_list=""
 821     for tok in $(eval echo \$$var); do
 822         uniq_list="$(filter_out $tok $uniq_list) $tok"
 823     done
 824     eval "$var=\"${uniq_list}\""
 825 }
 826
 827 add_cppflags(){
 828     append CPPFLAGS "$@"
 829 }
 830
 831 add_cflags(){
 832     append CFLAGS $($cflags_filter "$@")
 833 }
 834
 835 add_cflags_headers(){
 836     append CFLAGS_HEADERS $($cflags_filter "$@")
 837 }
 838
 839 add_cxxflags(){
 840     append CXXFLAGS $($cflags_filter "$@")
 841 }
 842
 843 add_asflags(){
 844     append ASFLAGS $($asflags_filter "$@")
 845 }
 846
 847 add_objcflags(){
 848     append OBJCFLAGS $($objcflags_filter "$@")
 849 }
 850
 851 add_ldflags(){
 852     append LDFLAGS $($ldflags_filter "$@")
 853 }
 854
 855 add_ldexeflags(){
 856     append LDEXEFLAGS $($ldflags_filter "$@")
 857 }
 858
 859 add_ldlibflags(){
 860     append LDLIBFLAGS $($ldflags_filter "$@")
 861 }
 862
 863 add_stripflags(){
 864     append ASMSTRIPFLAGS "$@"
 865 }
 866
 867 add_extralibs(){
 868     prepend extralibs $($ldflags_filter "$@")
 869 }
 870
 871 add_host_cppflags(){
 872     append host_cppflags "$@"
 873 }
 874
 875 add_host_cflags(){
 876     append host_cflags $($host_cflags_filter "$@")
 877 }
 878
 879 add_host_ldflags(){
 880     append host_ldflags $($host_ldflags_filter "$@")
 881 }
 882
 883 add_compat(){
 884     append compat_objs $1
 885     shift
 886     map 'add_cppflags -D$v' "$@"
 887 }
 888
 889 check_cmd(){
 890     log "$@"
 891     "$@" >> $logfile 2>&1
 892 }
 893
 894 check_stat(){
 895     log check_stat "$@"
 896     stat "$1" >> $logfile 2>&1
 897 }
 898
 899 cc_o(){
 900     eval printf '%s\\n' $CC_O
 901 }
 902
 903 cc_e(){
 904     eval printf '%s\\n' $CC_E
 905 }
 906
 907 check_cc(){
 908     log check_cc "$@"
 909     cat > $TMPC
 910     log_file $TMPC
 911     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 912 }
 913
 914 check_cxx(){
 915     log check_cxx "$@"
 916     cat > $TMPCPP
 917     log_file $TMPCPP
 918     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 919 }
 920
 921 check_objcc(){
 922     log check_objcc "$@"
 923     cat > $TMPM
 924     log_file $TMPM
 925     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
 926 }
 927
 928 check_cpp(){
 929     log check_cpp "$@"
 930     cat > $TMPC
 931     log_file $TMPC
 932     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 933 }
 934
 935 as_o(){
 936     eval printf '%s\\n' $AS_O
 937 }
 938
 939 check_as(){
 940     log check_as "$@"
 941     cat > $TMPS
 942     log_file $TMPS
 943     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 944 }
 945
 946 check_inline_asm(){
 947     log check_inline_asm "$@"
 948     name="$1"
 949     code="$2"
 950     shift 2
 951     disable $name
 952     check_cc "$@" <<EOF && enable $name
 953 void foo(void){ __asm__ volatile($code); }
 954 EOF
 955 }
 956
 957 check_inline_asm_flags(){
 958     log check_inline_asm_flags "$@"
 959     name="$1"
 960     code="$2"
 961     flags=''
 962     shift 2
 963     while [ "$1" != "" ]; do
 964       append flags $1
 965       shift
 966     done;
 967     disable $name
 968     cat > $TMPC <<EOF
 969 void foo(void){ __asm__ volatile($code); }
 970 EOF
 971     log_file $TMPC
 972     check_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
 973     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
 974 }
 975
 976 check_insn(){
 977     log check_insn "$@"
 978     check_inline_asm ${1}_inline "\"$2\""
 979     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 980 }
 981
 982 check_yasm(){
 983     log check_yasm "$@"
 984     echo "$1" > $TMPS
 985     log_file $TMPS
 986     shift 1
 987     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
 988 }
 989
 990 ld_o(){
 991     eval printf '%s\\n' $LD_O
 992 }
 993
 994 check_ld(){
 995     log check_ld "$@"
 996     type=$1
 997     shift 1
 998     flags=$(filter_out '-l*|*.so' $@)
 999     libs=$(filter '-l*|*.so' $@)
1000     check_$type $($cflags_filter $flags) || return
1001     flags=$($ldflags_filter $flags)
1002     libs=$($ldflags_filter $libs)
1003     check_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1004 }
1005
1006 print_include(){
1007     hdr=$1
1008     test "${hdr%.h}" = "${hdr}" &&
1009         echo "#include $hdr"    ||
1010         echo "#include <$hdr>"
1011 }
1012
1013 check_code(){
1014     log check_code "$@"
1015     check=$1
1016     headers=$2
1017     code=$3
1018     shift 3
1019     {
1020         for hdr in $headers; do
1021             print_include $hdr
1022         done
1023         echo "int main(void) { $code; return 0; }"
1024     } | check_$check "$@"
1025 }
1026
1027 check_cppflags(){
1028     log check_cppflags "$@"
1029     check_cpp "$@" <<EOF && append CPPFLAGS "$@"
1030 int x;
1031 EOF
1032 }
1033
1034 test_cflags(){
1035     log test_cflags "$@"
1036     set -- $($cflags_filter "$@")
1037     check_cc "$@" <<EOF
1038 int x;
1039 EOF
1040 }
1041
1042 check_cflags(){
1043     log check_cflags "$@"
1044     test_cflags "$@" && add_cflags "$@"
1045 }
1046
1047 check_cxxflags(){
1048     log check_cxxflags "$@"
1049     set -- $($cflags_filter "$@")
1050     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
1051 int x;
1052 EOF
1053 }
1054
1055 test_objcflags(){
1056     log test_objcflags "$@"
1057     set -- $($objcflags_filter "$@")
1058     check_objcc "$@" <<EOF
1059 int x;
1060 EOF
1061 }
1062
1063 check_objcflags(){
1064     log check_objcflags "$@"
1065     test_objcflags "$@" && add_objcflags "$@"
1066 }
1067
1068 test_ldflags(){
1069     log test_ldflags "$@"
1070     check_ld "cc" "$@" <<EOF
1071 int main(void){ return 0; }
1072 EOF
1073 }
1074
1075 check_ldflags(){
1076     log check_ldflags "$@"
1077     test_ldflags "$@" && add_ldflags "$@"
1078 }
1079
1080 test_stripflags(){
1081     log test_stripflags "$@"
1082     # call check_cc to get a fresh TMPO
1083     check_cc <<EOF
1084 int main(void) { return 0; }
1085 EOF
1086     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1087 }
1088
1089 check_stripflags(){
1090     log check_stripflags "$@"
1091     test_stripflags "$@" && add_stripflags "$@"
1092 }
1093
1094 check_header(){
1095     log check_header "$@"
1096     header=$1
1097     shift
1098     disable_safe $header
1099     check_cpp "$@" <<EOF && enable_safe $header
1100 #include <$header>
1101 int x;
1102 EOF
1103 }
1104
1105 check_header_objcc(){
1106     log check_header_objcc "$@"
1107     rm -f -- "$TMPO"
1108     header=$1
1109     shift
1110     disable_safe $header
1111     {
1112        echo "#include <$header>"
1113        echo "int main(void) { return 0; }"
1114     } | check_objcc && check_stat "$TMPO" && enable_safe $headers
1115 }
1116
1117 check_func(){
1118     log check_func "$@"
1119     func=$1
1120     shift
1121     disable $func
1122     check_ld "cc" "$@" <<EOF && enable $func
1123 extern int $func();
1124 int main(void){ $func(); }
1125 EOF
1126 }
1127
1128 check_complexfunc(){
1129     log check_complexfunc "$@"
1130     func=$1
1131     narg=$2
1132     shift 2
1133     test $narg = 2 && args="f, g" || args="f * I"
1134     disable $func
1135     check_ld "cc" "$@" <<EOF && enable $func
1136 #include <complex.h>
1137 #include <math.h>
1138 float foo(complex float f, complex float g) { return $func($args); }
1139 int main(void){ return (int) foo; }
1140 EOF
1141 }
1142
1143 check_mathfunc(){
1144     log check_mathfunc "$@"
1145     func=$1
1146     narg=$2
1147     shift 2
1148     test $narg = 2 && args="f, g" || args="f"
1149     disable $func
1150     check_ld "cc" "$@" <<EOF && enable $func
1151 #include <math.h>
1152 float foo(float f, float g) { return $func($args); }
1153 int main(void){ return (int) foo; }
1154 EOF
1155 }
1156
1157 check_func_headers(){
1158     log check_func_headers "$@"
1159     headers=$1
1160     funcs=$2
1161     shift 2
1162     {
1163         for hdr in $headers; do
1164             print_include $hdr
1165         done
1166         echo "#include <stdint.h>"
1167         for func in $funcs; do
1168             echo "long check_$func(void) { return (long) $func; }"
1169         done
1170         echo "int main(void) { int ret = 0;"
1171         # LTO could optimize out the test functions without this
1172         for func in $funcs; do
1173             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1174         done
1175         echo "return ret; }"
1176     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1177 }
1178
1179 check_class_headers_cpp(){
1180     log check_class_headers_cpp "$@"
1181     headers=$1
1182     classes=$2
1183     shift 2
1184     {
1185         for hdr in $headers; do
1186             echo "#include <$hdr>"
1187         done
1188         echo "int main(void) { "
1189         i=1
1190         for class in $classes; do
1191             echo "$class obj$i;"
1192             i=$(expr $i + 1)
1193         done
1194         echo "return 0; }"
1195     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1196 }
1197
1198 check_cpp_condition(){
1199     log check_cpp_condition "$@"
1200     header=$1
1201     condition=$2
1202     shift 2
1203     check_cpp "$@" <<EOF
1204 #include <$header>
1205 #if !($condition)
1206 #error "unsatisfied condition: $condition"
1207 #endif
1208 EOF
1209 }
1210
1211 test_cflags_cc(){
1212     log test_cflags_cc "$@"
1213     flags=$1
1214     header=$2
1215     condition=$3
1216     shift 3
1217     set -- $($cflags_filter "$flags")
1218     check_cc "$@" <<EOF
1219 #include <$header>
1220 #if !($condition)
1221 #error "unsatisfied condition: $condition"
1222 #endif
1223 EOF
1224 }
1225
1226 check_lib(){
1227     log check_lib "$@"
1228     name="$1"
1229     headers="$2"
1230     funcs="$3"
1231     shift 3
1232     disable $name
1233     check_func_headers "$headers" "$funcs" "$@" &&
1234         enable $name && add_extralibs "$@"
1235 }
1236
1237 check_lib_cpp(){
1238     log check_lib_cpp "$@"
1239     headers="$1"
1240     classes="$2"
1241     shift 2
1242     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1243 }
1244
1245 check_pkg_config(){
1246     log check_pkg_config "$@"
1247     pkg_version="$1"
1248     pkg="${1%% *}"
1249     headers="$2"
1250     funcs="$3"
1251     shift 3
1252     check_cmd $pkg_config --exists --print-errors $pkg_version || return
1253     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1254     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1255     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1256         set_safe "${pkg}_cflags"    $pkg_cflags &&
1257         set_safe "${pkg}_extralibs" $pkg_libs
1258 }
1259
1260 check_exec(){
1261     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1262 }
1263
1264 check_exec_crash(){
1265     log check_exec_crash "$@"
1266     code=$(cat)
1267
1268     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1269     # are safe but may not be available everywhere.  Thus we use
1270     # raise(SIGTERM) instead.  The check is run in a subshell so we
1271     # can redirect the "Terminated" message from the shell.  SIGBUS
1272     # is not defined by standard C so it is used conditionally.
1273
1274     (check_exec "$@") >> $logfile 2>&1 <<EOF
1275 #include <signal.h>
1276 static void sighandler(int sig){
1277     raise(SIGTERM);
1278 }
1279 int foo(void){
1280     $code
1281 }
1282 int (*func_ptr)(void) = foo;
1283 int main(void){
1284     signal(SIGILL, sighandler);
1285     signal(SIGFPE, sighandler);
1286     signal(SIGSEGV, sighandler);
1287 #ifdef SIGBUS
1288     signal(SIGBUS, sighandler);
1289 #endif
1290     return func_ptr();
1291 }
1292 EOF
1293 }
1294
1295 check_type(){
1296     log check_type "$@"
1297     headers=$1
1298     type=$2
1299     shift 2
1300     disable_safe "$type"
1301     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1302 }
1303
1304 check_struct(){
1305     log check_struct "$@"
1306     headers=$1
1307     struct=$2
1308     member=$3
1309     shift 3
1310     disable_safe "${struct}_${member}"
1311     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1312         enable_safe "${struct}_${member}"
1313 }
1314
1315 check_builtin(){
1316     log check_builtin "$@"
1317     name=$1
1318     headers=$2
1319     builtin=$3
1320     shift 3
1321     disable "$name"
1322     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1323 }
1324
1325 check_compile_assert(){
1326     log check_compile_assert "$@"
1327     name=$1
1328     headers=$2
1329     condition=$3
1330     shift 3
1331     disable "$name"
1332     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1333 }
1334
1335 require(){
1336     log require "$@"
1337     name_version="$1"
1338     name="${1%% *}"
1339     headers="$2"
1340     func="$3"
1341     shift 3
1342     check_lib $name "$headers" $func "$@" || die "ERROR: $name_version not found"
1343 }
1344
1345 require_cpp(){
1346     name="$1"
1347     headers="$2"
1348     classes="$3"
1349     shift 3
1350     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1351 }
1352
1353 use_pkg_config(){
1354     log use_pkg_config "$@"
1355     pkg="$1"
1356     check_pkg_config "$@" || return 1
1357     add_cflags    $(get_safe "${pkg}_cflags")
1358     add_extralibs $(get_safe "${pkg}_extralibs")
1359 }
1360
1361 require_pkg_config(){
1362     use_pkg_config "$@" || die "ERROR: $pkg not found using pkg-config$pkg_config_fail_message"
1363 }
1364
1365 hostcc_e(){
1366     eval printf '%s\\n' $HOSTCC_E
1367 }
1368
1369 hostcc_o(){
1370     eval printf '%s\\n' $HOSTCC_O
1371 }
1372
1373 check_host_cc(){
1374     log check_host_cc "$@"
1375     cat > $TMPC
1376     log_file $TMPC
1377     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1378 }
1379
1380 check_host_cpp(){
1381     log check_host_cpp "$@"
1382     cat > $TMPC
1383     log_file $TMPC
1384     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1385 }
1386
1387 check_host_cppflags(){
1388     log check_host_cppflags "$@"
1389     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1390 int x;
1391 EOF
1392 }
1393
1394 check_host_cflags(){
1395     log check_host_cflags "$@"
1396     set -- $($host_cflags_filter "$@")
1397     check_host_cc "$@" <<EOF && append host_cflags "$@"
1398 int x;
1399 EOF
1400 }
1401
1402 check_host_cpp_condition(){
1403     log check_host_cpp_condition "$@"
1404     header=$1
1405     condition=$2
1406     shift 2
1407     check_host_cpp "$@" <<EOF
1408 #include <$header>
1409 #if !($condition)
1410 #error "unsatisfied condition: $condition"
1411 #endif
1412 EOF
1413 }
1414
1415 cp_if_changed(){
1416     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1417     mkdir -p "$(dirname $2)"
1418     cp -f "$1" "$2"
1419 }
1420
1421 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1422 # system-dependent things.
1423
1424 AVCODEC_COMPONENTS="
1425     bsfs
1426     decoders
1427     encoders
1428     hwaccels
1429     parsers
1430 "
1431
1432 AVDEVICE_COMPONENTS="
1433     indevs
1434     outdevs
1435 "
1436 AVFILTER_COMPONENTS="
1437     filters
1438 "
1439 AVFORMAT_COMPONENTS="
1440     demuxers
1441     muxers
1442     protocols
1443 "
1444
1445 AVRESAMPLE_COMPONENTS=""
1446 AVUTIL_COMPONENTS=""
1447
1448 COMPONENT_LIST="
1449     $AVCODEC_COMPONENTS
1450     $AVDEVICE_COMPONENTS
1451     $AVFILTER_COMPONENTS
1452     $AVFORMAT_COMPONENTS
1453     $AVRESAMPLE_COMPONENTS
1454     $AVUTIL_COMPONENTS
1455 "
1456
1457 EXAMPLE_LIST="
1458     avio_dir_cmd_example
1459     avio_reading_example
1460     decode_audio_example
1461     decode_video_example
1462     demuxing_decoding_example
1463     encode_audio_example
1464     encode_video_example
1465     extract_mvs_example
1466     filter_audio_example
1467     filtering_audio_example
1468     filtering_video_example
1469     http_multiclient_example
1470     metadata_example
1471     muxing_example
1472     qsvdec_example
1473     remuxing_example
1474     resampling_audio_example
1475     scaling_video_example
1476     transcode_aac_example
1477     transcoding_example
1478 "
1479 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1480     bzlib
1481     iconv
1482     libxcb
1483     libxcb_shm
1484     libxcb_shape
1485     libxcb_xfixes
1486     lzma
1487     schannel
1488     sdl
1489     sdl2
1490     securetransport
1491     xlib
1492     zlib
1493 "
1494
1495 EXTERNAL_LIBRARY_GPL_LIST="
1496     avisynth
1497     frei0r
1498     libcdio
1499     librubberband
1500     libvidstab
1501     libx264
1502     libx265
1503     libxavs
1504     libxvid
1505 "
1506
1507 EXTERNAL_LIBRARY_NONFREE_LIST="
1508     decklink
1509     libfdk_aac
1510     openssl
1511 "
1512
1513 EXTERNAL_LIBRARY_VERSION3_LIST="
1514     gmp
1515     libopencore_amrnb
1516     libopencore_amrwb
1517     libvo_amrwbenc
1518 "
1519
1520 EXTERNAL_LIBRARY_GPLV3_LIST="
1521     libsmbclient
1522 "
1523
1524 EXTERNAL_LIBRARY_LIST="
1525     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1526     $EXTERNAL_LIBRARY_GPL_LIST
1527     $EXTERNAL_LIBRARY_NONFREE_LIST
1528     $EXTERNAL_LIBRARY_VERSION3_LIST
1529     $EXTERNAL_LIBRARY_GPLV3_LIST
1530     chromaprint
1531     crystalhd
1532     gcrypt
1533     gnutls
1534     jni
1535     ladspa
1536     libass
1537     libbluray
1538     libbs2b
1539     libcaca
1540     libcelt
1541     libdc1394
1542     libflite
1543     libfontconfig
1544     libfreetype
1545     libfribidi
1546     libgme
1547     libgsm
1548     libiec61883
1549     libilbc
1550     libkvazaar
1551     libmodplug
1552     libmp3lame
1553     libopencv
1554     libopenh264
1555     libopenjpeg
1556     libopenmpt
1557     libopus
1558     libpulse
1559     librsvg
1560     librtmp
1561     libshine
1562     libsmbclient
1563     libsnappy
1564     libsoxr
1565     libspeex
1566     libssh
1567     libtesseract
1568     libtheora
1569     libtwolame
1570     libv4l2
1571     libvorbis
1572     libvpx
1573     libwavpack
1574     libwebp
1575     libzimg
1576     libzmq
1577     libzvbi
1578     mediacodec
1579     netcdf
1580     openal
1581     opencl
1582     opengl
1583     videotoolbox
1584 "
1585 HWACCEL_AUTODETECT_LIBRARY_LIST="
1586     audiotoolbox
1587     cuda
1588     cuvid
1589     d3d11va
1590     dxva2
1591     nvenc
1592     vaapi
1593     vda
1594     vdpau
1595     videotoolbox_hwaccel
1596     xvmc
1597 "
1598
1599 HWACCEL_LIBRARY_NONFREE_LIST="
1600     cuda_sdk
1601     libnpp
1602 "
1603
1604 HWACCEL_LIBRARY_LIST="
1605     $HWACCEL_AUTODETECT_LIBRARY_LIST
1606     $HWACCEL_LIBRARY_NONFREE_LIST
1607     libmfx
1608     mmal
1609     omx
1610 "
1611
1612 DOCUMENT_LIST="
1613     doc
1614     htmlpages
1615     manpages
1616     podpages
1617     txtpages
1618 "
1619
1620 FEATURE_LIST="
1621     ftrapv
1622     gray
1623     hardcoded_tables
1624     omx_rpi
1625     runtime_cpudetect
1626     safe_bitstream_reader
1627     shared
1628     small
1629     static
1630     swscale_alpha
1631 "
1632
1633 LIBRARY_LIST="
1634     avcodec
1635     avdevice
1636     avfilter
1637     avformat
1638     avresample
1639     avutil
1640     postproc
1641     swresample
1642     swscale
1643 "
1644
1645 LICENSE_LIST="
1646     gpl
1647     nonfree
1648     version3
1649 "
1650
1651 PROGRAM_LIST="
1652     ffplay
1653     ffprobe
1654     ffserver
1655     ffmpeg
1656 "
1657
1658 SUBSYSTEM_LIST="
1659     dct
1660     dwt
1661     error_resilience
1662     faan
1663     fast_unaligned
1664     fft
1665     lsp
1666     lzo
1667     mdct
1668     pixelutils
1669     network
1670     rdft
1671 "
1672
1673 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1674 CONFIG_LIST="
1675     $DOCUMENT_LIST
1676     $EXAMPLE_LIST
1677     $EXTERNAL_LIBRARY_LIST
1678     $HWACCEL_LIBRARY_LIST
1679     $FEATURE_LIST
1680     $LICENSE_LIST
1681     $LIBRARY_LIST
1682     $PROGRAM_LIST
1683     $SUBSYSTEM_LIST
1684     fontconfig
1685     memory_poisoning
1686     neon_clobber_test
1687     ossfuzz
1688     pic
1689     thumb
1690     valgrind_backtrace
1691     xmm_clobber_test
1692     $COMPONENT_LIST
1693 "
1694
1695 THREADS_LIST="
1696     pthreads
1697     os2threads
1698     w32threads
1699 "
1700
1701 ATOMICS_LIST="
1702     atomics_gcc
1703     atomics_suncc
1704     atomics_win32
1705 "
1706
1707 AUTODETECT_LIBS="
1708     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1709     $HWACCEL_AUTODETECT_LIBRARY_LIST
1710     $THREADS_LIST
1711 "
1712
1713 ARCH_LIST="
1714     aarch64
1715     alpha
1716     arm
1717     avr32
1718     avr32_ap
1719     avr32_uc
1720     bfin
1721     ia64
1722     m68k
1723     mips
1724     mips64
1725     parisc
1726     ppc
1727     ppc64
1728     s390
1729     sh4
1730     sparc
1731     sparc64
1732     tilegx
1733     tilepro
1734     tomi
1735     x86
1736     x86_32
1737     x86_64
1738 "
1739
1740 ARCH_EXT_LIST_ARM="
1741     armv5te
1742     armv6
1743     armv6t2
1744     armv8
1745     neon
1746     vfp
1747     vfpv3
1748     setend
1749 "
1750
1751 ARCH_EXT_LIST_MIPS="
1752     mipsfpu
1753     mips32r2
1754     mips32r5
1755     mips64r2
1756     mips32r6
1757     mips64r6
1758     mipsdsp
1759     mipsdspr2
1760     msa
1761 "
1762
1763 ARCH_EXT_LIST_LOONGSON="
1764     loongson2
1765     loongson3
1766     mmi
1767 "
1768
1769 ARCH_EXT_LIST_X86_SIMD="
1770     aesni
1771     amd3dnow
1772     amd3dnowext
1773     avx
1774     avx2
1775     fma3
1776     fma4
1777     mmx
1778     mmxext
1779     sse
1780     sse2
1781     sse3
1782     sse4
1783     sse42
1784     ssse3
1785     xop
1786 "
1787
1788 ARCH_EXT_LIST_PPC="
1789     altivec
1790     dcbzl
1791     ldbrx
1792     power8
1793     ppc4xx
1794     vsx
1795 "
1796
1797 ARCH_EXT_LIST_X86="
1798     $ARCH_EXT_LIST_X86_SIMD
1799     cpunop
1800     i686
1801 "
1802
1803 ARCH_EXT_LIST="
1804     $ARCH_EXT_LIST_ARM
1805     $ARCH_EXT_LIST_PPC
1806     $ARCH_EXT_LIST_X86
1807     $ARCH_EXT_LIST_MIPS
1808     $ARCH_EXT_LIST_LOONGSON
1809 "
1810
1811 ARCH_FEATURES="
1812     aligned_stack
1813     fast_64bit
1814     fast_clz
1815     fast_cmov
1816     local_aligned_8
1817     local_aligned_16
1818     local_aligned_32
1819     simd_align_16
1820     simd_align_32
1821 "
1822
1823 BUILTIN_LIST="
1824     atomic_cas_ptr
1825     machine_rw_barrier
1826     MemoryBarrier
1827     mm_empty
1828     rdtsc
1829     sarestart
1830     sem_timedwait
1831     sync_val_compare_and_swap
1832 "
1833 HAVE_LIST_CMDLINE="
1834     inline_asm
1835     symver
1836     yasm
1837 "
1838
1839 HAVE_LIST_PUB="
1840     bigendian
1841     fast_unaligned
1842 "
1843
1844 HEADERS_LIST="
1845     alsa_asoundlib_h
1846     altivec_h
1847     arpa_inet_h
1848     asm_types_h
1849     cdio_paranoia_h
1850     cdio_paranoia_paranoia_h
1851     cuda_h
1852     d3d11_h
1853     dispatch_dispatch_h
1854     dev_bktr_ioctl_bt848_h
1855     dev_bktr_ioctl_meteor_h
1856     dev_ic_bt8xx_h
1857     dev_video_bktr_ioctl_bt848_h
1858     dev_video_meteor_ioctl_meteor_h
1859     direct_h
1860     dirent_h
1861     dlfcn_h
1862     dxva_h
1863     ES2_gl_h
1864     gsm_h
1865     io_h
1866     mach_mach_time_h
1867     machine_ioctl_bt848_h
1868     machine_ioctl_meteor_h
1869     malloc_h
1870     opencv2_core_core_c_h
1871     openjpeg_2_1_openjpeg_h
1872     openjpeg_2_0_openjpeg_h
1873     openjpeg_1_5_openjpeg_h
1874     OpenGL_gl3_h
1875     poll_h
1876     sndio_h
1877     soundcard_h
1878     stdatomic_h
1879     sys_mman_h
1880     sys_param_h
1881     sys_resource_h
1882     sys_select_h
1883     sys_soundcard_h
1884     sys_time_h
1885     sys_un_h
1886     sys_videoio_h
1887     termios_h
1888     udplite_h
1889     unistd_h
1890     valgrind_valgrind_h
1891     windows_h
1892     winsock2_h
1893 "
1894
1895 INTRINSICS_LIST="
1896     intrinsics_neon
1897 "
1898
1899 COMPLEX_FUNCS="
1900     cabs
1901     cexp
1902 "
1903
1904 MATH_FUNCS="
1905     atanf
1906     atan2f
1907     cbrt
1908     cbrtf
1909     copysign
1910     cosf
1911     erf
1912     exp2
1913     exp2f
1914     expf
1915     hypot
1916     isfinite
1917     isinf
1918     isnan
1919     ldexpf
1920     llrint
1921     llrintf
1922     log2
1923     log2f
1924     log10f
1925     lrint
1926     lrintf
1927     powf
1928     rint
1929     round
1930     roundf
1931     sinf
1932     trunc
1933     truncf
1934 "
1935
1936 SYSTEM_FUNCS="
1937     access
1938     aligned_malloc
1939     arc4random
1940     clock_gettime
1941     closesocket
1942     CommandLineToArgvW
1943     CoTaskMemFree
1944     CryptGenRandom
1945     dlopen
1946     fcntl
1947     flt_lim
1948     fork
1949     getaddrinfo
1950     gethrtime
1951     getopt
1952     GetProcessAffinityMask
1953     GetProcessMemoryInfo
1954     GetProcessTimes
1955     getrusage
1956     GetSystemTimeAsFileTime
1957     gettimeofday
1958     glob
1959     glXGetProcAddress
1960     gmtime_r
1961     inet_aton
1962     isatty
1963     jack_port_get_latency_range
1964     kbhit
1965     LoadLibrary
1966     localtime_r
1967     lstat
1968     lzo1x_999_compress
1969     mach_absolute_time
1970     MapViewOfFile
1971     memalign
1972     mkstemp
1973     mmap
1974     mprotect
1975     nanosleep
1976     PeekNamedPipe
1977     posix_memalign
1978     pthread_cancel
1979     sched_getaffinity
1980     SetConsoleTextAttribute
1981     SetConsoleCtrlHandler
1982     setmode
1983     setrlimit
1984     Sleep
1985     strerror_r
1986     sysconf
1987     sysctl
1988     usleep
1989     UTGetOSTypeFromString
1990     VirtualAlloc
1991     wglGetProcAddress
1992 "
1993
1994 TOOLCHAIN_FEATURES="
1995     as_dn_directive
1996     as_fpu_directive
1997     as_func
1998     as_object_arch
1999     asm_mod_q
2000     attribute_may_alias
2001     attribute_packed
2002     blocks_extension
2003     ebp_available
2004     ebx_available
2005     gnu_as
2006     gnu_windres
2007     ibm_asm
2008     inline_asm_direct_symbol_refs
2009     inline_asm_labels
2010     inline_asm_nonlocal_labels
2011     pragma_deprecated
2012     rsync_contimeout
2013     symver_asm_label
2014     symver_gnu_asm
2015     vfp_args
2016     xform_asm
2017     xmm_clobbers
2018 "
2019
2020 TYPES_LIST="
2021     CONDITION_VARIABLE_Ptr
2022     socklen_t
2023     struct_addrinfo
2024     struct_group_source_req
2025     struct_ip_mreq_source
2026     struct_ipv6_mreq
2027     struct_msghdr_msg_flags
2028     struct_pollfd
2029     struct_rusage_ru_maxrss
2030     struct_sctp_event_subscribe
2031     struct_sockaddr_in6
2032     struct_sockaddr_sa_len
2033     struct_sockaddr_storage
2034     struct_stat_st_mtim_tv_nsec
2035     struct_v4l2_frmivalenum_discrete
2036 "
2037
2038 HAVE_LIST="
2039     $ARCH_EXT_LIST
2040     $(add_suffix _external $ARCH_EXT_LIST)
2041     $(add_suffix _inline   $ARCH_EXT_LIST)
2042     $ARCH_FEATURES
2043     $ATOMICS_LIST
2044     $BUILTIN_LIST
2045     $COMPLEX_FUNCS
2046     $HAVE_LIST_CMDLINE
2047     $HAVE_LIST_PUB
2048     $HEADERS_LIST
2049     $INTRINSICS_LIST
2050     $MATH_FUNCS
2051     $SYSTEM_FUNCS
2052     $THREADS_LIST
2053     $TOOLCHAIN_FEATURES
2054     $TYPES_LIST
2055     alsa
2056     atomics_native
2057     dos_paths
2058     dxva2_lib
2059     dxva2api_cobj
2060     jack
2061     libc_msvcrt
2062     makeinfo
2063     makeinfo_html
2064     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2065     perl
2066     pod2man
2067     sdl2
2068     section_data_rel_ro
2069     sndio
2070     texi2html
2071     threads
2072     vaapi_android
2073     vaapi_drm
2074     vaapi_x11
2075     vdpau_x11
2076     winrt
2077 "
2078
2079 # options emitted with CONFIG_ prefix but not available on the command line
2080 CONFIG_EXTRA="
2081     aandcttables
2082     ac3dsp
2083     audio_frame_queue
2084     audiodsp
2085     blockdsp
2086     bswapdsp
2087     cabac
2088     dirac_parse
2089     dvprofile
2090     exif
2091     faandct
2092     faanidct
2093     fdctdsp
2094     flacdsp
2095     fmtconvert
2096     frame_thread_encoder
2097     g722dsp
2098     golomb
2099     gplv3
2100     h263dsp
2101     h264chroma
2102     h264dsp
2103     h264parse
2104     h264pred
2105     h264qpel
2106     hevcparse
2107     hpeldsp
2108     huffman
2109     huffyuvdsp
2110     huffyuvencdsp
2111     idctdsp
2112     iirfilter
2113     mdct15
2114     intrax8
2115     iso_media
2116     ividsp
2117     jpegtables
2118     lgplv3
2119     libx262
2120     llauddsp
2121     llviddsp
2122     llvidencdsp
2123     lpc
2124     lzf
2125     me_cmp
2126     mpeg_er
2127     mpegaudio
2128     mpegaudiodsp
2129     mpegaudioheader
2130     mpegvideo
2131     mpegvideoenc
2132     mss34dsp
2133     pixblockdsp
2134     qpeldsp
2135     qsv
2136     qsvdec
2137     qsvenc
2138     rangecoder
2139     riffdec
2140     riffenc
2141     rtpdec
2142     rtpenc_chain
2143     rv34dsp
2144     sinewin
2145     snappy
2146     srtp
2147     startcode
2148     texturedsp
2149     texturedspenc
2150     tpeldsp
2151     vaapi_encode
2152     vc1dsp
2153     videodsp
2154     vp3dsp
2155     vp56dsp
2156     vp8dsp
2157     vt_bt2020
2158     wma_freqs
2159     wmv2dsp
2160 "
2161
2162 CMDLINE_SELECT="
2163     $ARCH_EXT_LIST
2164     $CONFIG_LIST
2165     $HAVE_LIST_CMDLINE
2166     $THREADS_LIST
2167     asm
2168     cross_compile
2169     debug
2170     extra_warnings
2171     logging
2172     lto
2173     optimizations
2174     rpath
2175     stripping
2176 "
2177
2178 PATHS_LIST="
2179     bindir
2180     datadir
2181     docdir
2182     incdir
2183     libdir
2184     mandir
2185     pkgconfigdir
2186     prefix
2187     shlibdir
2188     install_name_dir
2189 "
2190
2191 CMDLINE_SET="
2192     $PATHS_LIST
2193     ar
2194     arch
2195     as
2196     assert_level
2197     build_suffix
2198     cc
2199     objcc
2200     cpu
2201     cross_prefix
2202     custom_allocator
2203     cxx
2204     dep_cc
2205     doxygen
2206     env
2207     extra_version
2208     gas
2209     host_cc
2210     host_cflags
2211     host_extralibs
2212     host_ld
2213     host_ldflags
2214     host_os
2215     ignore_tests
2216     install
2217     ld
2218     ln_s
2219     logfile
2220     malloc_prefix
2221     nm
2222     optflags
2223     nvccflags
2224     pkg_config
2225     pkg_config_flags
2226     progs_suffix
2227     random_seed
2228     ranlib
2229     samples
2230     strip
2231     sws_max_filter_size
2232     sysinclude
2233     sysroot
2234     target_exec
2235     target_os
2236     target_path
2237     target_samples
2238     tempprefix
2239     toolchain
2240     valgrind
2241     yasmexe
2242 "
2243
2244 CMDLINE_APPEND="
2245     extra_cflags
2246     extra_cxxflags
2247     extra_objcflags
2248     host_cppflags
2249 "
2250
2251 # code dependency declarations
2252
2253 # architecture extensions
2254
2255 armv5te_deps="arm"
2256 armv6_deps="arm"
2257 armv6t2_deps="arm"
2258 armv8_deps="aarch64"
2259 neon_deps_any="aarch64 arm"
2260 intrinsics_neon_deps="neon"
2261 vfp_deps_any="aarch64 arm"
2262 vfpv3_deps="vfp"
2263 setend_deps="arm"
2264
2265 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2266
2267 loongson2_deps="mips"
2268 loongson3_deps="mips"
2269 mipsfpu_deps="mips"
2270 mipsdsp_deps="mips"
2271 mipsdspr2_deps="mips"
2272 mips32r2_deps="mips"
2273 mips32r5_deps="mips"
2274 mips32r6_deps="mips"
2275 mips64r2_deps="mips"
2276 mips64r6_deps="mips"
2277 msa_deps="mipsfpu"
2278 mmi_deps="mips"
2279
2280 altivec_deps="ppc"
2281 dcbzl_deps="ppc"
2282 ldbrx_deps="ppc"
2283 ppc4xx_deps="ppc"
2284 vsx_deps="altivec"
2285 power8_deps="vsx"
2286
2287 cpunop_deps="i686"
2288 x86_64_select="i686"
2289 x86_64_suggest="fast_cmov"
2290
2291 amd3dnow_deps="mmx"
2292 amd3dnowext_deps="amd3dnow"
2293 i686_deps="x86"
2294 mmx_deps="x86"
2295 mmxext_deps="mmx"
2296 sse_deps="mmxext"
2297 sse2_deps="sse"
2298 sse3_deps="sse2"
2299 ssse3_deps="sse3"
2300 sse4_deps="ssse3"
2301 sse42_deps="sse4"
2302 aesni_deps="sse42"
2303 avx_deps="sse42"
2304 xop_deps="avx"
2305 fma3_deps="avx"
2306 fma4_deps="avx"
2307 avx2_deps="avx"
2308
2309 mmx_external_deps="yasm"
2310 mmx_inline_deps="inline_asm"
2311 mmx_suggest="mmx_external mmx_inline"
2312
2313 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2314     eval dep=\$${ext}_deps
2315     eval ${ext}_external_deps='"${dep}_external"'
2316     eval ${ext}_inline_deps='"${dep}_inline"'
2317     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2318 done
2319
2320 aligned_stack_if_any="aarch64 ppc x86"
2321 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2322 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2323 fast_unaligned_if_any="aarch64 ppc x86"
2324 simd_align_16_if_any="altivec neon sse"
2325 simd_align_32_if_any="avx"
2326
2327 # system capabilities
2328 symver_if_any="symver_asm_label symver_gnu_asm"
2329 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
2330
2331 # threading support
2332 atomics_gcc_if="sync_val_compare_and_swap"
2333 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2334 atomics_win32_if="MemoryBarrier"
2335 atomics_native_if_any="$ATOMICS_LIST"
2336 w32threads_deps="atomics_native"
2337 threads_if_any="$THREADS_LIST"
2338
2339 # subsystems
2340 dct_select="rdft"
2341 dirac_parse_select="golomb"
2342 error_resilience_select="me_cmp"
2343 faandct_deps="faan fdctdsp"
2344 faanidct_deps="faan idctdsp"
2345 h264dsp_select="startcode"
2346 hevcparse_select="golomb"
2347 frame_thread_encoder_deps="encoders threads"
2348 intrax8_select="blockdsp idctdsp"
2349 mdct_select="fft"
2350 mdct15_select="fft"
2351 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2352 mpeg_er_select="error_resilience"
2353 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2354 mpegaudiodsp_select="dct"
2355 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2356 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2357 vc1dsp_select="h264chroma qpeldsp startcode"
2358 rdft_select="fft"
2359
2360 # decoders / encoders
2361 aac_decoder_select="mdct15 mdct sinewin"
2362 aac_fixed_decoder_select="mdct sinewin"
2363 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2364 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2365 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2366 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2367 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2368 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2369 adpcm_g722_decoder_select="g722dsp"
2370 adpcm_g722_encoder_select="g722dsp"
2371 aic_decoder_select="golomb idctdsp"
2372 alac_encoder_select="lpc"
2373 als_decoder_select="bswapdsp"
2374 amrnb_decoder_select="lsp"
2375 amrwb_decoder_select="lsp"
2376 amv_decoder_select="sp5x_decoder exif"
2377 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2378 ape_decoder_select="bswapdsp llauddsp"
2379 apng_decoder_select="zlib"
2380 apng_encoder_select="llvidencdsp zlib"
2381 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2382 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2383 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2384 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2385 atrac1_decoder_select="mdct sinewin"
2386 atrac3_decoder_select="mdct"
2387 atrac3p_decoder_select="mdct sinewin"
2388 avrn_decoder_select="exif jpegtables"
2389 bink_decoder_select="blockdsp hpeldsp"
2390 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2391 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2392 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2393 cllc_decoder_select="bswapdsp"
2394 comfortnoise_encoder_select="lpc"
2395 cook_decoder_select="audiodsp mdct sinewin"
2396 cscd_decoder_select="lzo"
2397 cscd_decoder_suggest="zlib"
2398 dca_decoder_select="mdct"
2399 dds_decoder_select="texturedsp"
2400 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2401 dnxhd_decoder_select="blockdsp idctdsp"
2402 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2403 dvvideo_decoder_select="dvprofile idctdsp"
2404 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2405 dxa_decoder_select="zlib"
2406 dxv_decoder_select="lzf texturedsp"
2407 eac3_decoder_select="ac3_decoder"
2408 eac3_encoder_select="ac3_encoder"
2409 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2410 eatgq_decoder_select="aandcttables"
2411 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2412 exr_decoder_select="zlib"
2413 ffv1_decoder_select="rangecoder"
2414 ffv1_encoder_select="rangecoder"
2415 ffvhuff_decoder_select="huffyuv_decoder"
2416 ffvhuff_encoder_select="huffyuv_encoder"
2417 fic_decoder_select="golomb"
2418 flac_decoder_select="flacdsp"
2419 flac_encoder_select="bswapdsp flacdsp lpc"
2420 flashsv2_decoder_select="zlib"
2421 flashsv2_encoder_select="zlib"
2422 flashsv_decoder_select="zlib"
2423 flashsv_encoder_select="zlib"
2424 flv_decoder_select="h263_decoder"
2425 flv_encoder_select="h263_encoder"
2426 fourxm_decoder_select="blockdsp bswapdsp"
2427 fraps_decoder_select="bswapdsp huffman"
2428 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2429 g729_decoder_select="audiodsp"
2430 h261_decoder_select="mpegvideo"
2431 h261_encoder_select="aandcttables mpegvideoenc"
2432 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2433 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2434 h263i_decoder_select="h263_decoder"
2435 h263p_decoder_select="h263_decoder"
2436 h263p_encoder_select="h263_encoder"
2437 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2438 h264_decoder_suggest="error_resilience"
2439 hap_decoder_select="snappy texturedsp"
2440 hap_encoder_deps="libsnappy"
2441 hap_encoder_select="texturedspenc"
2442 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2443 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2444 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2445 iac_decoder_select="imc_decoder"
2446 imc_decoder_select="bswapdsp fft mdct sinewin"
2447 indeo3_decoder_select="hpeldsp"
2448 indeo4_decoder_select="ividsp"
2449 indeo5_decoder_select="ividsp"
2450 interplay_video_decoder_select="hpeldsp"
2451 jpegls_decoder_select="mjpeg_decoder"
2452 jv_decoder_select="blockdsp"
2453 lagarith_decoder_select="llviddsp"
2454 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2455 magicyuv_decoder_select="llviddsp"
2456 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2457 metasound_decoder_select="lsp mdct sinewin"
2458 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2459 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2460 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2461 mjpegb_decoder_select="mjpeg_decoder"
2462 mlp_decoder_select="mlp_parser"
2463 mlp_encoder_select="lpc"
2464 motionpixels_decoder_select="bswapdsp"
2465 mp1_decoder_select="mpegaudio"
2466 mp1float_decoder_select="mpegaudio"
2467 mp2_decoder_select="mpegaudio"
2468 mp2float_decoder_select="mpegaudio"
2469 mp3_decoder_select="mpegaudio"
2470 mp3adu_decoder_select="mpegaudio"
2471 mp3adufloat_decoder_select="mpegaudio"
2472 mp3float_decoder_select="mpegaudio"
2473 mp3on4_decoder_select="mpegaudio"
2474 mp3on4float_decoder_select="mpegaudio"
2475 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2476 mpc8_decoder_select="mpegaudiodsp"
2477 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2478 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2479 mpegvideo_decoder_select="mpegvideo"
2480 mpeg1video_decoder_select="mpegvideo"
2481 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2482 mpeg2video_decoder_select="mpegvideo"
2483 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2484 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2485 mpeg4_encoder_select="h263_encoder"
2486 msa1_decoder_select="mss34dsp"
2487 mscc_decoder_select="zlib"
2488 msmpeg4v1_decoder_select="h263_decoder"
2489 msmpeg4v2_decoder_select="h263_decoder"
2490 msmpeg4v2_encoder_select="h263_encoder"
2491 msmpeg4v3_decoder_select="h263_decoder"
2492 msmpeg4v3_encoder_select="h263_encoder"
2493 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2494 mts2_decoder_select="mss34dsp"
2495 mxpeg_decoder_select="mjpeg_decoder"
2496 nellymoser_decoder_select="mdct sinewin"
2497 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2498 nuv_decoder_select="idctdsp lzo"
2499 on2avc_decoder_select="mdct"
2500 opus_decoder_deps="swresample"
2501 opus_decoder_select="mdct15"
2502 opus_encoder_select="audio_frame_queue mdct15"
2503 png_decoder_select="zlib"
2504 png_encoder_select="llvidencdsp zlib"
2505 prores_decoder_select="blockdsp idctdsp"
2506 prores_encoder_select="fdctdsp"
2507 qcelp_decoder_select="lsp"
2508 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2509 ra_144_decoder_select="audiodsp"
2510 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2511 ralf_decoder_select="golomb"
2512 rawvideo_decoder_select="bswapdsp"
2513 rscc_decoder_select="zlib"
2514 rtjpeg_decoder_select="me_cmp"
2515 rv10_decoder_select="h263_decoder"
2516 rv10_encoder_select="h263_encoder"
2517 rv20_decoder_select="h263_decoder"
2518 rv20_encoder_select="h263_encoder"
2519 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2520 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2521 screenpresso_decoder_select="zlib"
2522 shorten_decoder_select="bswapdsp"
2523 sipr_decoder_select="lsp"
2524 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2525 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2526 sonic_decoder_select="golomb rangecoder"
2527 sonic_encoder_select="golomb rangecoder"
2528 sonic_ls_encoder_select="golomb rangecoder"
2529 sp5x_decoder_select="mjpeg_decoder"
2530 srgc_decoder_select="zlib"
2531 svq1_decoder_select="hpeldsp"
2532 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2533 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2534 svq3_decoder_suggest="zlib"
2535 tak_decoder_select="audiodsp"
2536 tdsc_decoder_select="zlib mjpeg_decoder"
2537 theora_decoder_select="vp3_decoder"
2538 thp_decoder_select="mjpeg_decoder"
2539 tiff_decoder_suggest="zlib lzma"
2540 tiff_encoder_suggest="zlib"
2541 truehd_decoder_select="mlp_parser"
2542 truehd_encoder_select="lpc"
2543 truemotion2_decoder_select="bswapdsp"
2544 truespeech_decoder_select="bswapdsp"
2545 tscc_decoder_select="zlib"
2546 twinvq_decoder_select="mdct lsp sinewin"
2547 txd_decoder_select="texturedsp"
2548 utvideo_decoder_select="bswapdsp llviddsp"
2549 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2550 vble_decoder_select="llviddsp"
2551 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2552 vc1_qsv_decoder_deps="libmfx"
2553 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2554 vc1image_decoder_select="vc1_decoder"
2555 vorbis_decoder_select="mdct"
2556 vorbis_encoder_select="mdct"
2557 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2558 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2559 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2560 vp6a_decoder_select="vp6_decoder"
2561 vp6f_decoder_select="vp6_decoder"
2562 vp7_decoder_select="h264pred videodsp vp8dsp"
2563 vp8_decoder_select="h264pred videodsp vp8dsp"
2564 vp9_decoder_select="videodsp vp9_parser"
2565 webp_decoder_select="vp8_decoder exif"
2566 wmalossless_decoder_select="llauddsp"
2567 wmapro_decoder_select="mdct sinewin wma_freqs"
2568 wmav1_decoder_select="mdct sinewin wma_freqs"
2569 wmav1_encoder_select="mdct sinewin wma_freqs"
2570 wmav2_decoder_select="mdct sinewin wma_freqs"
2571 wmav2_encoder_select="mdct sinewin wma_freqs"
2572 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2573 wmv1_decoder_select="h263_decoder"
2574 wmv1_encoder_select="h263_encoder"
2575 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2576 wmv2_encoder_select="h263_encoder wmv2dsp"
2577 wmv3_decoder_select="vc1_decoder"
2578 wmv3image_decoder_select="wmv3_decoder"
2579 xma1_decoder_select="wmapro_decoder"
2580 xma2_decoder_select="wmapro_decoder"
2581 zerocodec_decoder_select="zlib"
2582 zlib_decoder_select="zlib"
2583 zlib_encoder_select="zlib"
2584 zmbv_decoder_select="zlib"
2585 zmbv_encoder_select="zlib"
2586
2587 # platform codecs
2588 audiotoolbox_deps="AudioToolbox_AudioToolbox_h"
2589 audiotoolbox_extralibs="-framework CoreFoundation -framework AudioToolbox -framework CoreMedia"
2590
2591 # hardware accelerators
2592 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2593 cuda_deps_any="dlopen LoadLibrary"
2594 cuvid_deps="cuda"
2595 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2596 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2597 dxva2_extralibs="-luser32"
2598 dxva2_lib_deps="dxva2"
2599 vda_framework_deps="VideoDecodeAcceleration_VDADecoder_h blocks_extension"
2600 vda_framework_extralibs="-framework VideoDecodeAcceleration"
2601 vda_deps="vda_framework pthreads"
2602 vda_extralibs="-framework CoreFoundation -framework QuartzCore"
2603 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2604 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2605 xvmc_deps="X11_extensions_XvMClib_h"
2606
2607 h263_vaapi_hwaccel_deps="vaapi"
2608 h263_vaapi_hwaccel_select="h263_decoder"
2609 h263_videotoolbox_hwaccel_deps="videotoolbox"
2610 h263_videotoolbox_hwaccel_select="h263_decoder"
2611 h264_cuvid_hwaccel_deps="cuda cuvid"
2612 h264_cuvid_hwaccel_select="h264_cuvid_decoder"
2613 h264_d3d11va_hwaccel_deps="d3d11va"
2614 h264_d3d11va_hwaccel_select="h264_decoder"
2615 h264_dxva2_hwaccel_deps="dxva2"
2616 h264_dxva2_hwaccel_select="h264_decoder"
2617 h264_mediacodec_hwaccel_deps="mediacodec"
2618 h264_mmal_hwaccel_deps="mmal"
2619 h264_qsv_hwaccel_deps="libmfx"
2620 h264_vaapi_hwaccel_deps="vaapi"
2621 h264_vaapi_hwaccel_select="h264_decoder"
2622 h264_vda_hwaccel_deps="vda"
2623 h264_vda_hwaccel_select="h264_decoder"
2624 h264_vda_old_hwaccel_deps="vda"
2625 h264_vda_old_hwaccel_select="h264_decoder"
2626 h264_vdpau_hwaccel_deps="vdpau"
2627 h264_vdpau_hwaccel_select="h264_decoder"
2628 h264_videotoolbox_hwaccel_deps="videotoolbox"
2629 h264_videotoolbox_hwaccel_select="h264_decoder"
2630 hevc_cuvid_hwaccel_deps="cuda cuvid"
2631 hevc_cuvid_hwaccel_select="hevc_cuvid_decoder"
2632 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2633 hevc_d3d11va_hwaccel_select="hevc_decoder"
2634 hevc_mediacodec_hwaccel_deps="mediacodec"
2635 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2636 hevc_dxva2_hwaccel_select="hevc_decoder"
2637 hevc_qsv_hwaccel_deps="libmfx"
2638 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2639 hevc_vaapi_hwaccel_select="hevc_decoder"
2640 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2641 hevc_vdpau_hwaccel_select="hevc_decoder"
2642 mjpeg_cuvid_hwaccel_deps="cuda cuvid"
2643 mjpeg_cuvid_hwaccel_select="mjpeg_cuvid_decoder"
2644 mpeg_xvmc_hwaccel_deps="xvmc"
2645 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2646 mpeg1_cuvid_hwaccel_deps="cuda cuvid"
2647 mpeg1_cuvid_hwaccel_select="mpeg1_cuvid_decoder"
2648 mpeg1_vdpau_hwaccel_deps="vdpau"
2649 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2650 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2651 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2652 mpeg1_xvmc_hwaccel_deps="xvmc"
2653 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2654 mpeg2_cuvid_hwaccel_deps="cuda cuvid"
2655 mpeg2_cuvid_hwaccel_select="mpeg2_cuvid_decoder"
2656 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2657 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2658 mpeg2_dxva2_hwaccel_deps="dxva2"
2659 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2660 mpeg2_mmal_hwaccel_deps="mmal"
2661 mpeg2_qsv_hwaccel_deps="libmfx"
2662 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2663 mpeg2_vaapi_hwaccel_deps="vaapi"
2664 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2665 mpeg2_vdpau_hwaccel_deps="vdpau"
2666 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2667 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2668 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2669 mpeg2_xvmc_hwaccel_deps="xvmc"
2670 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2671 mpeg4_cuvid_hwaccel_deps="cuda cuvid"
2672 mpeg4_cuvid_hwaccel_select="mpeg4_cuvid_decoder"
2673 mpeg4_mediacodec_hwaccel_deps="mediacodec"
2674 mpeg4_mmal_hwaccel_deps="mmal"
2675 mpeg4_vaapi_hwaccel_deps="vaapi"
2676 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2677 mpeg4_vdpau_hwaccel_deps="vdpau"
2678 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2679 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2680 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2681 vc1_cuvid_hwaccel_deps="cuda cuvid"
2682 vc1_cuvid_hwaccel_select="vc1_cuvid_decoder"
2683 vc1_d3d11va_hwaccel_deps="d3d11va"
2684 vc1_d3d11va_hwaccel_select="vc1_decoder"
2685 vc1_dxva2_hwaccel_deps="dxva2"
2686 vc1_dxva2_hwaccel_select="vc1_decoder"
2687 vc1_mmal_hwaccel_deps="mmal"
2688 vc1_qsv_hwaccel_deps="libmfx"
2689 vc1_qsv_hwaccel_select="qsvdec_vc1"
2690 vc1_vaapi_hwaccel_deps="vaapi"
2691 vc1_vaapi_hwaccel_select="vc1_decoder"
2692 vc1_vdpau_hwaccel_deps="vdpau"
2693 vc1_vdpau_hwaccel_select="vc1_decoder"
2694 vp8_cuvid_hwaccel_deps="cuda cuvid"
2695 vp8_cuvid_hwaccel_select="vp8_cuvid_decoder"
2696 vp9_cuvid_hwaccel_deps="cuda cuvid"
2697 vp9_cuvid_hwaccel_select="vp9_cuvid_decoder"
2698 vp8_mediacodec_hwaccel_deps="mediacodec"
2699 vp8_qsv_hwaccel_deps="libmfx"
2700 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2701 vp9_d3d11va_hwaccel_select="vp9_decoder"
2702 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2703 vp9_dxva2_hwaccel_select="vp9_decoder"
2704 vp9_mediacodec_hwaccel_deps="mediacodec"
2705 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2706 vp9_vaapi_hwaccel_select="vp9_decoder"
2707 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2708 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2709 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2710 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2711
2712 # hardware-accelerated codecs
2713 omx_deps="dlopen pthreads"
2714 omx_extralibs='$ldl'
2715 omx_rpi_select="omx"
2716 qsvdec_select="qsv"
2717 qsvenc_select="qsv"
2718 vaapi_encode_deps="vaapi"
2719
2720 hwupload_cuda_filter_deps="cuda"
2721 scale_npp_filter_deps="cuda libnpp"
2722 scale_cuda_filter_deps="cuda_sdk"
2723
2724 nvenc_deps="cuda"
2725 nvenc_deps_any="dlopen LoadLibrary"
2726 nvenc_encoder_deps="nvenc"
2727
2728 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2729 h264_cuvid_decoder_deps="cuda cuvid"
2730 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2731 h264_mediacodec_decoder_deps="mediacodec"
2732 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2733 h264_mmal_decoder_deps="mmal"
2734 h264_nvenc_encoder_deps="nvenc"
2735 h264_omx_encoder_deps="omx"
2736 h264_qsv_decoder_deps="libmfx"
2737 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2738 h264_qsv_encoder_deps="libmfx"
2739 h264_qsv_encoder_select="qsvenc"
2740 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2741 h264_vaapi_encoder_select="vaapi_encode golomb"
2742 h264_vda_decoder_deps="vda"
2743 h264_vda_decoder_select="h264_decoder"
2744 h264_vdpau_decoder_deps="vdpau"
2745 h264_vdpau_decoder_select="h264_decoder"
2746 hevc_cuvid_decoder_deps="cuda cuvid"
2747 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2748 hevc_mediacodec_decoder_deps="mediacodec"
2749 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2750 hevc_nvenc_encoder_deps="nvenc"
2751 hevc_qsv_decoder_deps="libmfx"
2752 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2753 hevc_qsv_encoder_deps="libmfx"
2754 hevc_qsv_encoder_select="hevcparse qsvenc"
2755 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2756 hevc_vaapi_encoder_select="vaapi_encode golomb"
2757 mjpeg_cuvid_decoder_deps="cuda cuvid"
2758 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2759 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2760 mpeg1_cuvid_decoder_deps="cuda cuvid"
2761 mpeg1_vdpau_decoder_deps="vdpau"
2762 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2763 mpeg2_crystalhd_decoder_select="crystalhd"
2764 mpeg2_cuvid_decoder_deps="cuda cuvid"
2765 mpeg2_mmal_decoder_deps="mmal"
2766 mpeg2_qsv_decoder_deps="libmfx"
2767 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2768 mpeg2_qsv_encoder_deps="libmfx"
2769 mpeg2_qsv_encoder_select="qsvenc"
2770 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2771 mpeg2_vaapi_encoder_select="vaapi_encode"
2772 mpeg4_crystalhd_decoder_select="crystalhd"
2773 mpeg4_cuvid_decoder_deps="cuda cuvid"
2774 mpeg4_mediacodec_decoder_deps="mediacodec"
2775 mpeg4_mmal_decoder_deps="mmal"
2776 mpeg4_omx_encoder_deps="omx"
2777 mpeg4_vdpau_decoder_deps="vdpau"
2778 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2779 mpeg_vdpau_decoder_deps="vdpau"
2780 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2781 msmpeg4_crystalhd_decoder_select="crystalhd"
2782 nvenc_h264_encoder_select="h264_nvenc_encoder"
2783 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2784 vc1_crystalhd_decoder_select="crystalhd"
2785 vc1_cuvid_decoder_deps="cuda cuvid"
2786 vc1_mmal_decoder_deps="mmal"
2787 vc1_vdpau_decoder_deps="vdpau"
2788 vc1_vdpau_decoder_select="vc1_decoder"
2789 vp8_cuvid_decoder_deps="cuda cuvid"
2790 vp8_mediacodec_decoder_deps="mediacodec"
2791 vp8_qsv_decoder_deps="libmfx"
2792 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2793 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2794 vp8_vaapi_encoder_select="vaapi_encode"
2795 vp9_cuvid_decoder_deps="cuda cuvid"
2796 vp9_mediacodec_decoder_deps="mediacodec"
2797 wmv3_crystalhd_decoder_select="crystalhd"
2798 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2799
2800 # parsers
2801 h264_parser_select="golomb h264dsp h264parse"
2802 hevc_parser_select="hevcparse"
2803 mpegaudio_parser_select="mpegaudioheader"
2804 mpegvideo_parser_select="mpegvideo"
2805 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2806 vc1_parser_select="vc1dsp"
2807
2808 # bitstream_filters
2809 mjpeg2jpeg_bsf_select="jpegtables"
2810
2811 # external libraries
2812 aac_at_decoder_deps="audiotoolbox"
2813 ac3_at_decoder_deps="audiotoolbox"
2814 ac3_at_decoder_select="ac3_parser"
2815 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2816 alac_at_decoder_deps="audiotoolbox"
2817 amr_nb_at_decoder_deps="audiotoolbox"
2818 avisynth_deps_any="dlopen LoadLibrary"
2819 avisynth_demuxer_deps="avisynth"
2820 avisynth_demuxer_select="riffdec"
2821 eac3_at_decoder_deps="audiotoolbox"
2822 eac3_at_decoder_select="ac3_parser"
2823 gsm_ms_at_decoder_deps="audiotoolbox"
2824 ilbc_at_decoder_deps="audiotoolbox"
2825 mp1_at_decoder_deps="audiotoolbox"
2826 mp2_at_decoder_deps="audiotoolbox"
2827 mp3_at_decoder_deps="audiotoolbox"
2828 mp1_at_decoder_select="mpegaudioheader"
2829 mp2_at_decoder_select="mpegaudioheader"
2830 mp3_at_decoder_select="mpegaudioheader"
2831 pcm_alaw_at_decoder_deps="audiotoolbox"
2832 pcm_mulaw_at_decoder_deps="audiotoolbox"
2833 qdmc_at_decoder_deps="audiotoolbox"
2834 qdm2_at_decoder_deps="audiotoolbox"
2835 aac_at_encoder_deps="audiotoolbox"
2836 aac_at_encoder_select="audio_frame_queue"
2837 alac_at_encoder_deps="audiotoolbox"
2838 alac_at_encoder_select="audio_frame_queue"
2839 ilbc_at_encoder_deps="audiotoolbox"
2840 ilbc_at_encoder_select="audio_frame_queue"
2841 pcm_alaw_at_encoder_deps="audiotoolbox"
2842 pcm_alaw_at_encoder_select="audio_frame_queue"
2843 pcm_mulaw_at_encoder_deps="audiotoolbox"
2844 pcm_mulaw_at_encoder_select="audio_frame_queue"
2845 chromaprint_muxer_deps="chromaprint"
2846 h264_videotoolbox_encoder_deps="videotoolbox_encoder pthreads"
2847 libcelt_decoder_deps="libcelt"
2848 libfdk_aac_decoder_deps="libfdk_aac"
2849 libfdk_aac_encoder_deps="libfdk_aac"
2850 libfdk_aac_encoder_select="audio_frame_queue"
2851 libgme_demuxer_deps="libgme"
2852 libgsm_decoder_deps="libgsm"
2853 libgsm_encoder_deps="libgsm"
2854 libgsm_ms_decoder_deps="libgsm"
2855 libgsm_ms_encoder_deps="libgsm"
2856 libilbc_decoder_deps="libilbc"
2857 libilbc_encoder_deps="libilbc"
2858 libkvazaar_encoder_deps="libkvazaar"
2859 libmodplug_demuxer_deps="libmodplug"
2860 libmp3lame_encoder_deps="libmp3lame"
2861 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2862 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2863 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2864 libopencore_amrnb_encoder_select="audio_frame_queue"
2865 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2866 libopenh264_decoder_deps="libopenh264"
2867 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2868 libopenh264_encoder_deps="libopenh264"
2869 libopenjpeg_decoder_deps="libopenjpeg"
2870 libopenjpeg_encoder_deps="libopenjpeg"
2871 libopenmpt_demuxer_deps="libopenmpt"
2872 libopus_decoder_deps="libopus"
2873 libopus_encoder_deps="libopus"
2874 libopus_encoder_select="audio_frame_queue"
2875 librsvg_decoder_deps="librsvg"
2876 libshine_encoder_deps="libshine"
2877 libshine_encoder_select="audio_frame_queue"
2878 libspeex_decoder_deps="libspeex"
2879 libspeex_encoder_deps="libspeex"
2880 libspeex_encoder_select="audio_frame_queue"
2881 libtheora_encoder_deps="libtheora"
2882 libtwolame_encoder_deps="libtwolame"
2883 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2884 libvorbis_decoder_deps="libvorbis"
2885 libvorbis_encoder_deps="libvorbis"
2886 libvorbis_encoder_select="audio_frame_queue"
2887 libvpx_vp8_decoder_deps="libvpx"
2888 libvpx_vp8_encoder_deps="libvpx"
2889 libvpx_vp9_decoder_deps="libvpx"
2890 libvpx_vp9_encoder_deps="libvpx"
2891 libwavpack_encoder_deps="libwavpack"
2892 libwavpack_encoder_select="audio_frame_queue"
2893 libwebp_encoder_deps="libwebp"
2894 libwebp_anim_encoder_deps="libwebp"
2895 libx262_encoder_deps="libx262"
2896 libx264_encoder_deps="libx264"
2897 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2898 libx264rgb_encoder_select="libx264_encoder"
2899 libx265_encoder_deps="libx265"
2900 libxavs_encoder_deps="libxavs"
2901 libxvid_encoder_deps="libxvid"
2902 libzvbi_teletext_decoder_deps="libzvbi"
2903 videotoolbox_deps="VideoToolbox_VideoToolbox_h"
2904 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework CoreVideo"
2905 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2906 videotoolbox_encoder_suggest="vda_framework vt_bt2020"
2907 vt_bt2020_deps="kCVImageBufferColorPrimaries_ITU_R_2020"
2908
2909 # demuxers / muxers
2910 ac3_demuxer_select="ac3_parser"
2911 aiff_muxer_select="iso_media"
2912 asf_demuxer_select="riffdec"
2913 asf_o_demuxer_select="riffdec"
2914 asf_muxer_select="riffenc"
2915 asf_stream_muxer_select="asf_muxer"
2916 avi_demuxer_select="iso_media riffdec exif"
2917 avi_muxer_select="riffenc"
2918 caf_demuxer_select="iso_media riffdec"
2919 caf_muxer_select="iso_media"
2920 dash_muxer_select="mp4_muxer"
2921 dirac_demuxer_select="dirac_parser"
2922 dts_demuxer_select="dca_parser"
2923 dtshd_demuxer_select="dca_parser"
2924 dv_demuxer_select="dvprofile"
2925 dv_muxer_select="dvprofile"
2926 dxa_demuxer_select="riffdec"
2927 eac3_demuxer_select="ac3_parser"
2928 f4v_muxer_select="mov_muxer"
2929 fifo_muxer_deps="threads"
2930 flac_demuxer_select="flac_parser"
2931 hds_muxer_select="flv_muxer"
2932 hls_muxer_select="mpegts_muxer"
2933 image2_alias_pix_demuxer_select="image2_demuxer"
2934 image2_brender_pix_demuxer_select="image2_demuxer"
2935 ipod_muxer_select="mov_muxer"
2936 ismv_muxer_select="mov_muxer"
2937 matroska_audio_muxer_select="matroska_muxer"
2938 matroska_demuxer_select="iso_media riffdec"
2939 matroska_demuxer_suggest="bzlib lzo zlib"
2940 matroska_muxer_select="iso_media riffenc"
2941 mmf_muxer_select="riffenc"
2942 mov_demuxer_select="iso_media riffdec"
2943 mov_demuxer_suggest="zlib"
2944 mov_muxer_select="iso_media riffenc rtpenc_chain"
2945 mp3_demuxer_select="mpegaudio_parser"
2946 mp3_muxer_select="mpegaudioheader"
2947 mp4_muxer_select="mov_muxer"
2948 mpegts_demuxer_select="iso_media"
2949 mpegts_muxer_select="adts_muxer latm_muxer"
2950 mpegtsraw_demuxer_select="mpegts_demuxer"
2951 mxf_d10_muxer_select="mxf_muxer"
2952 mxf_opatom_muxer_select="mxf_muxer"
2953 nut_muxer_select="riffenc"
2954 nuv_demuxer_select="riffdec"
2955 oga_muxer_select="ogg_muxer"
2956 ogg_demuxer_select="dirac_parse"
2957 ogv_muxer_select="ogg_muxer"
2958 opus_muxer_select="ogg_muxer"
2959 psp_muxer_select="mov_muxer"
2960 rtp_demuxer_select="sdp_demuxer"
2961 rtp_muxer_select="golomb"
2962 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2963 rtsp_demuxer_select="http_protocol rtpdec"
2964 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2965 sap_demuxer_select="sdp_demuxer"
2966 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2967 sdp_demuxer_select="rtpdec"
2968 smoothstreaming_muxer_select="ismv_muxer"
2969 spdif_muxer_select="aac_parser"
2970 spx_muxer_select="ogg_muxer"
2971 swf_demuxer_suggest="zlib"
2972 tak_demuxer_select="tak_parser"
2973 tg2_muxer_select="mov_muxer"
2974 tgp_muxer_select="mov_muxer"
2975 vobsub_demuxer_select="mpegps_demuxer"
2976 w64_demuxer_select="wav_demuxer"
2977 w64_muxer_select="wav_muxer"
2978 wav_demuxer_select="riffdec"
2979 wav_muxer_select="riffenc"
2980 webm_muxer_select="iso_media riffenc"
2981 webm_dash_manifest_demuxer_select="matroska_demuxer"
2982 wtv_demuxer_select="mpegts_demuxer riffdec"
2983 wtv_muxer_select="mpegts_muxer riffenc"
2984 xmv_demuxer_select="riffdec"
2985 xwma_demuxer_select="riffdec"
2986
2987 # indevs / outdevs
2988 alsa_indev_deps="alsa"
2989 alsa_outdev_deps="alsa"
2990 avfoundation_indev_deps="pthreads"
2991 avfoundation_indev_extralibs="-framework Foundation -framework AVFoundation -framework CoreVideo -framework CoreMedia"
2992 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2993 caca_outdev_deps="libcaca"
2994 decklink_indev_deps="decklink threads"
2995 decklink_indev_extralibs="-lstdc++"
2996 decklink_outdev_deps="decklink threads"
2997 decklink_outdev_extralibs="-lstdc++"
2998 dshow_indev_deps="IBaseFilter"
2999 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3000 dv1394_indev_deps="dv1394"
3001 dv1394_indev_select="dv_demuxer"
3002 fbdev_indev_deps="linux_fb_h"
3003 fbdev_outdev_deps="linux_fb_h"
3004 gdigrab_indev_deps="CreateDIBSection"
3005 gdigrab_indev_extralibs="-lgdi32"
3006 gdigrab_indev_select="bmp_decoder"
3007 iec61883_indev_deps="libiec61883"
3008 jack_indev_deps="jack"
3009 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3010 lavfi_indev_deps="avfilter"
3011 libcdio_indev_deps="libcdio"
3012 libdc1394_indev_deps="libdc1394"
3013 libv4l2_indev_deps="libv4l2"
3014 openal_indev_deps="openal"
3015 opengl_outdev_deps="opengl"
3016 oss_indev_deps_any="soundcard_h sys_soundcard_h"
3017 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
3018 pulse_indev_deps="libpulse"
3019 pulse_outdev_deps="libpulse"
3020 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
3021 qtkit_indev_select="qtkit"
3022 sdl2_outdev_deps="sdl2"
3023 sndio_indev_deps="sndio"
3024 sndio_outdev_deps="sndio"
3025 v4l_indev_deps="linux_videodev_h"
3026 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3027 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3028 vfwcap_indev_deps="vfw32 vfwcap_defines"
3029 xcbgrab_indev_deps="libxcb"
3030 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3031 xv_outdev_extralibs="-lXv -lX11 -lXext"
3032
3033 # protocols
3034 async_protocol_deps="threads"
3035 bluray_protocol_deps="libbluray"
3036 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
3037 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3038 ffrtmpcrypt_protocol_select="tcp_protocol"
3039 ffrtmphttp_protocol_deps="!librtmp_protocol"
3040 ffrtmphttp_protocol_select="http_protocol"
3041 ftp_protocol_select="tcp_protocol"
3042 gopher_protocol_select="network"
3043 http_protocol_select="tcp_protocol"
3044 httpproxy_protocol_select="tcp_protocol"
3045 https_protocol_select="tls_protocol"
3046 icecast_protocol_select="http_protocol"
3047 librtmp_protocol_deps="librtmp"
3048 librtmpe_protocol_deps="librtmp"
3049 librtmps_protocol_deps="librtmp"
3050 librtmpt_protocol_deps="librtmp"
3051 librtmpte_protocol_deps="librtmp"
3052 libsmbclient_protocol_deps="libsmbclient gplv3"
3053 libssh_protocol_deps="libssh"
3054 mmsh_protocol_select="http_protocol"
3055 mmst_protocol_select="network"
3056 rtmp_protocol_deps="!librtmp_protocol"
3057 rtmp_protocol_select="tcp_protocol"
3058 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3059 rtmps_protocol_deps="!librtmp_protocol"
3060 rtmps_protocol_select="tls_protocol"
3061 rtmpt_protocol_select="ffrtmphttp_protocol"
3062 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3063 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3064 rtp_protocol_select="udp_protocol"
3065 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3066 sctp_protocol_select="network"
3067 srtp_protocol_select="rtp_protocol srtp"
3068 tcp_protocol_select="network"
3069 tls_gnutls_protocol_deps="gnutls !tls_schannel_protocol !tls_securetransport_protocol"
3070 tls_gnutls_protocol_select="tcp_protocol"
3071 tls_openssl_protocol_deps="openssl !tls_schannel_protocol !tls_securetransport_protocol !tls_gnutls_protocol"
3072 tls_openssl_protocol_select="tcp_protocol"
3073 tls_schannel_protocol_deps="schannel"
3074 tls_schannel_protocol_select="tcp_protocol"
3075 tls_securetransport_protocol_deps="securetransport"
3076 tls_securetransport_protocol_select="tcp_protocol"
3077 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
3078 udp_protocol_select="network"
3079 udplite_protocol_select="network"
3080 unix_protocol_deps="sys_un_h"
3081 unix_protocol_select="network"
3082
3083 # filters
3084 afftfilt_filter_deps="avcodec"
3085 afftfilt_filter_select="fft"
3086 afir_filter_deps="avcodec"
3087 afir_filter_select="fft"
3088 amovie_filter_deps="avcodec avformat"
3089 aresample_filter_deps="swresample"
3090 ass_filter_deps="libass"
3091 atempo_filter_deps="avcodec"
3092 atempo_filter_select="rdft"
3093 azmq_filter_deps="libzmq"
3094 blackframe_filter_deps="gpl"
3095 boxblur_filter_deps="gpl"
3096 bs2b_filter_deps="libbs2b"
3097 colormatrix_filter_deps="gpl"
3098 cover_rect_filter_deps="avcodec avformat gpl"
3099 cropdetect_filter_deps="gpl"
3100 deinterlace_qsv_filter_deps="libmfx"
3101 deinterlace_vaapi_filter_deps="vaapi"
3102 delogo_filter_deps="gpl"
3103 deshake_filter_select="pixelutils"
3104 drawtext_filter_deps="libfreetype"
3105 elbg_filter_deps="avcodec"
3106 eq_filter_deps="gpl"
3107 fftfilt_filter_deps="avcodec"
3108 fftfilt_filter_select="rdft"
3109 find_rect_filter_deps="avcodec avformat gpl"
3110 firequalizer_filter_deps="avcodec"
3111 firequalizer_filter_select="rdft"
3112 flite_filter_deps="libflite"
3113 framerate_filter_select="pixelutils"
3114 frei0r_filter_deps="frei0r dlopen"
3115 frei0r_src_filter_deps="frei0r dlopen"
3116 fspp_filter_deps="gpl"
3117 geq_filter_deps="gpl"
3118 histeq_filter_deps="gpl"
3119 hqdn3d_filter_deps="gpl"
3120 interlace_filter_deps="gpl"
3121 kerndeint_filter_deps="gpl"
3122 ladspa_filter_deps="ladspa dlopen"
3123 mcdeint_filter_deps="avcodec gpl"
3124 movie_filter_deps="avcodec avformat"
3125 mpdecimate_filter_deps="gpl"
3126 mpdecimate_filter_select="pixelutils"
3127 mptestsrc_filter_deps="gpl"
3128 negate_filter_deps="lut_filter"
3129 nnedi_filter_deps="gpl"
3130 ocr_filter_deps="libtesseract"
3131 ocv_filter_deps="libopencv"
3132 owdenoise_filter_deps="gpl"
3133 pan_filter_deps="swresample"
3134 perspective_filter_deps="gpl"
3135 phase_filter_deps="gpl"
3136 pp7_filter_deps="gpl"
3137 pp_filter_deps="gpl postproc"
3138 pullup_filter_deps="gpl"
3139 removelogo_filter_deps="avcodec avformat swscale"
3140 repeatfields_filter_deps="gpl"
3141 resample_filter_deps="avresample"
3142 rubberband_filter_deps="librubberband"
3143 sab_filter_deps="gpl swscale"
3144 scale2ref_filter_deps="swscale"
3145 scale_filter_deps="swscale"
3146 scale_qsv_filter_deps="libmfx"
3147 select_filter_select="pixelutils"
3148 showcqt_filter_deps="avcodec avformat swscale"
3149 showcqt_filter_select="fft"
3150 showfreqs_filter_deps="avcodec"
3151 showfreqs_filter_select="fft"
3152 showspectrum_filter_deps="avcodec"
3153 showspectrum_filter_select="fft"
3154 showspectrumpic_filter_deps="avcodec"
3155 showspectrumpic_filter_select="fft"
3156 signature_filter_deps="gpl avcodec avformat"
3157 smartblur_filter_deps="gpl swscale"
3158 sofalizer_filter_deps="netcdf avcodec"
3159 sofalizer_filter_select="fft"
3160 spectrumsynth_filter_deps="avcodec"
3161 spectrumsynth_filter_select="fft"
3162 spp_filter_deps="gpl avcodec"
3163 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3164 stereo3d_filter_deps="gpl"
3165 subtitles_filter_deps="avformat avcodec libass"
3166 super2xsai_filter_deps="gpl"
3167 pixfmts_super2xsai_test_deps="super2xsai_filter"
3168 tinterlace_filter_deps="gpl"
3169 tinterlace_merge_test_deps="tinterlace_filter"
3170 tinterlace_pad_test_deps="tinterlace_filter"
3171 uspp_filter_deps="gpl avcodec"
3172 vaguedenoiser_filter_deps="gpl"
3173 vidstabdetect_filter_deps="libvidstab"
3174 vidstabtransform_filter_deps="libvidstab"
3175 zmq_filter_deps="libzmq"
3176 zoompan_filter_deps="swscale"
3177 zscale_filter_deps="libzimg"
3178 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3179
3180 # examples
3181 avio_dir_cmd_deps="avformat avutil"
3182 avio_reading_deps="avformat avcodec avutil"
3183 decode_audio_example_deps="avcodec avutil"
3184 decode_video_example_deps="avcodec avutil"
3185 demuxing_decoding_example_deps="avcodec avformat avutil"
3186 encode_audio_example_deps="avcodec avutil"
3187 encode_video_example_deps="avcodec avutil"
3188 extract_mvs_example_deps="avcodec avformat avutil"
3189 filter_audio_example_deps="avfilter avutil"
3190 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3191 filtering_video_example_deps="avfilter avcodec avformat avutil"
3192 http_multiclient_example_deps="avformat avutil fork"
3193 metadata_example_deps="avformat avutil"
3194 muxing_example_deps="avcodec avformat avutil swscale"
3195 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3196 remuxing_example_deps="avcodec avformat avutil"
3197 resampling_audio_example_deps="avutil swresample"
3198 scaling_video_example_deps="avutil swscale"
3199 transcode_aac_example_deps="avcodec avformat swresample"
3200 transcoding_example_deps="avfilter avcodec avformat avutil"
3201
3202 # libraries, in linking order
3203 avcodec_deps="avutil"
3204 avcodec_select="null_bsf"
3205 avdevice_deps="avformat avcodec avutil"
3206 avfilter_deps="avutil"
3207 avformat_deps="avcodec avutil"
3208 avresample_deps="avutil"
3209 postproc_deps="avutil gpl"
3210 swresample_deps="avutil"
3211 swscale_deps="avutil"
3212
3213 # programs
3214 ffmpeg_deps="avcodec avfilter avformat swresample"
3215 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3216                null_filter
3217                trim_filter"
3218 ffplay_deps="avcodec avformat swscale swresample sdl2"
3219 ffplay_extralibs='$sdl2_extralibs'
3220 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3221 ffprobe_deps="avcodec avformat"
3222 ffserver_deps="avformat fork sarestart"
3223 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3224
3225 # documentation
3226 podpages_deps="perl"
3227 manpages_deps="perl pod2man"
3228 htmlpages_deps="perl"
3229 htmlpages_deps_any="makeinfo_html texi2html"
3230 txtpages_deps="perl makeinfo"
3231 doc_deps_any="manpages htmlpages podpages txtpages"
3232
3233 # default parameters
3234
3235 logfile="ffbuild/config.log"
3236
3237 # installation paths
3238 prefix_default="/usr/local"
3239 bindir_default='${prefix}/bin'
3240 datadir_default='${prefix}/share/ffmpeg'
3241 docdir_default='${prefix}/share/doc/ffmpeg'
3242 incdir_default='${prefix}/include'
3243 libdir_default='${prefix}/lib'
3244 mandir_default='${prefix}/share/man'
3245
3246 # toolchain
3247 ar_default="ar"
3248 cc_default="gcc"
3249 cxx_default="g++"
3250 host_cc_default="gcc"
3251 doxygen_default="doxygen"
3252 install="install"
3253 ln_s_default="ln -s -f"
3254 nm_default="nm -g"
3255 objformat="elf"
3256 pkg_config_default=pkg-config
3257 ranlib_default="ranlib"
3258 strip_default="strip"
3259 version_script='--version-script'
3260 yasmexe_default="yasm"
3261 windres_default="windres"
3262 nvcc_default="nvcc"
3263 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3264
3265 # OS
3266 target_os_default=$(tolower $(uname -s))
3267 host_os=$target_os_default
3268
3269 # machine
3270 if test "$target_os_default" = aix; then
3271     arch_default=$(uname -p)
3272     strip_default="strip -X32_64"
3273 else
3274     arch_default=$(uname -m)
3275 fi
3276 cpu="generic"
3277 intrinsics="none"
3278
3279 # configurable options
3280 enable $PROGRAM_LIST
3281 enable $DOCUMENT_LIST
3282 enable $EXAMPLE_LIST
3283 enable $(filter_out avresample $LIBRARY_LIST)
3284 enable stripping
3285
3286 enable asm
3287 enable debug
3288 enable doc
3289 enable faan faandct faanidct
3290 enable optimizations
3291 enable runtime_cpudetect
3292 enable safe_bitstream_reader
3293 enable static
3294 enable swscale_alpha
3295 enable valgrind_backtrace
3296
3297 sws_max_filter_size_default=256
3298 set_default sws_max_filter_size
3299
3300 # build settings
3301 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3302 LIBPREF="lib"
3303 LIBSUF=".a"
3304 FULLNAME='$(NAME)$(BUILDSUF)'
3305 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3306 SLIBPREF="lib"
3307 SLIBSUF=".so"
3308 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3309 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3310 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3311 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3312 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3313 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3314 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3315
3316 asflags_filter=echo
3317 cflags_filter=echo
3318 ldflags_filter=echo
3319
3320 AS_C='-c'
3321 AS_O='-o $@'
3322 CC_C='-c'
3323 CC_E='-E -o $@'
3324 CC_O='-o $@'
3325 CXX_C='-c'
3326 CXX_O='-o $@'
3327 OBJCC_C='-c'
3328 OBJCC_E='-E -o $@'
3329 OBJCC_O='-o $@'
3330 LD_O='-o $@'
3331 LD_LIB='-l%'
3332 LD_PATH='-L'
3333 HOSTCC_C='-c'
3334 HOSTCC_E='-E -o $@'
3335 HOSTCC_O='-o $@'
3336 HOSTLD_O='-o $@'
3337 NVCC_C='-c'
3338 NVCC_O='-o $@'
3339
3340 host_extralibs='-lm'
3341 host_cflags_filter=echo
3342 host_ldflags_filter=echo
3343
3344 target_path='$(CURDIR)'
3345
3346 # since the object filename is not given with the -MM flag, the compiler
3347 # is only able to print the basename, and we must add the path ourselves
3348 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3349 DEPFLAGS='-MM'
3350
3351 # find source path
3352 if test -f configure; then
3353     source_path=.
3354 else
3355     source_path=$(cd $(dirname "$0"); pwd)
3356     case "$source_path" in
3357         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3358     esac
3359     test -e "$source_path/config.h" &&
3360         die "Out of tree builds are impossible with config.h in source dir."
3361 fi
3362
3363 for v in "$@"; do
3364     r=${v#*=}
3365     l=${v%"$r"}
3366     r=$(sh_quote "$r")
3367     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3368 done
3369
3370 find_things(){
3371     thing=$1
3372     pattern=$2
3373     file=$source_path/$3
3374     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3375 }
3376
3377 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3378 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3379 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3380 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3381 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3382 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3383 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3384 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3385 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3386
3387 find_things_extern(){
3388     thing=$1
3389     pattern=$2
3390     file=$source_path/$3
3391     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3392 }
3393
3394 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3395 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3396
3397 ALL_COMPONENTS="
3398     $BSF_LIST
3399     $DECODER_LIST
3400     $DEMUXER_LIST
3401     $ENCODER_LIST
3402     $FILTER_LIST
3403     $HWACCEL_LIST
3404     $INDEV_LIST
3405     $MUXER_LIST
3406     $OUTDEV_LIST
3407     $PARSER_LIST
3408     $PROTOCOL_LIST
3409 "
3410
3411 for n in $COMPONENT_LIST; do
3412     v=$(toupper ${n%s})_LIST
3413     eval enable \$$v
3414     eval ${n}_if_any="\$$v"
3415 done
3416
3417 enable $ARCH_EXT_LIST
3418
3419 die_unknown(){
3420     echo "Unknown option \"$1\"."
3421     echo "See $0 --help for available options."
3422     exit 1
3423 }
3424
3425 print_in_columns() {
3426     cols=$(expr $ncols / 24)
3427     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3428 }
3429
3430 show_list() {
3431     suffix=_$1
3432     shift
3433     echo $* | sed s/$suffix//g | print_in_columns
3434     exit 0
3435 }
3436
3437 rand_list(){
3438     IFS=', '
3439     set -- $*
3440     unset IFS
3441     for thing; do
3442         comp=${thing%:*}
3443         prob=${thing#$comp}
3444         prob=${prob#:}
3445         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3446         echo "prob ${prob:-0.5}"
3447         printf '%s\n' $comp
3448     done
3449 }
3450
3451 do_random(){
3452     action=$1
3453     shift
3454     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3455     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3456 }
3457
3458 for opt do
3459     optval="${opt#*=}"
3460     case "$opt" in
3461         --extra-ldflags=*)
3462             add_ldflags $optval
3463         ;;
3464         --extra-ldexeflags=*)
3465             add_ldexeflags $optval
3466         ;;
3467         --extra-ldlibflags=*)
3468             add_ldlibflags $optval
3469         ;;
3470         --extra-libs=*)
3471             add_extralibs $optval
3472         ;;
3473         --disable-devices)
3474             disable $INDEV_LIST $OUTDEV_LIST
3475         ;;
3476         --enable-debug=*)
3477             debuglevel="$optval"
3478         ;;
3479         --disable-programs)
3480             disable $PROGRAM_LIST
3481         ;;
3482         --disable-everything)
3483             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3484         ;;
3485         --disable-all)
3486             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3487             disable $LIBRARY_LIST $PROGRAM_LIST doc
3488             enable avutil
3489         ;;
3490         --enable-random|--disable-random)
3491             action=${opt%%-random}
3492             do_random ${action#--} $COMPONENT_LIST
3493         ;;
3494         --enable-random=*|--disable-random=*)
3495             action=${opt%%-random=*}
3496             do_random ${action#--} $optval
3497         ;;
3498         --enable-*=*|--disable-*=*)
3499             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3500             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3501             eval list=\$$(toupper $thing)_LIST
3502             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3503             list=$(filter "$name" $list)
3504             [ "$list" = "" ] && warn "Option $opt did not match anything"
3505             $action $list
3506         ;;
3507         --enable-?*|--disable-?*)
3508             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3509             if is_in $option $COMPONENT_LIST; then
3510                 test $action = disable && action=unset
3511                 eval $action \$$(toupper ${option%s})_LIST
3512             elif is_in $option $CMDLINE_SELECT; then
3513                 $action $option
3514             else
3515                 die_unknown $opt
3516             fi
3517         ;;
3518         --list-*)
3519             NAME="${opt#--list-}"
3520             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3521             NAME=${NAME%s}
3522             eval show_list $NAME \$$(toupper $NAME)_LIST
3523         ;;
3524         --help|-h) show_help
3525         ;;
3526         --quiet|-q) quiet=yes
3527         ;;
3528         --fatal-warnings) enable fatal_warnings
3529         ;;
3530         --libfuzzer=*)
3531             libfuzzer_path="$optval"
3532         ;;
3533         *)
3534             optname="${opt%%=*}"
3535             optname="${optname#--}"
3536             optname=$(echo "$optname" | sed 's/-/_/g')
3537             if is_in $optname $CMDLINE_SET; then
3538                 eval $optname='$optval'
3539             elif is_in $optname $CMDLINE_APPEND; then
3540                 append $optname "$optval"
3541             else
3542                 die_unknown $opt
3543             fi
3544         ;;
3545     esac
3546 done
3547
3548 for e in $env; do
3549     eval "export $e"
3550 done
3551
3552 # Mark specifically enabled, but normally autodetected libraries as requested.
3553 for lib in $AUTODETECT_LIBS; do
3554     enabled $lib && request $lib
3555 done
3556
3557 # Enable platform codecs by default.
3558 enable_weak audiotoolbox
3559
3560 # Enable hwaccels by default.
3561 enable_weak d3d11va dxva2 vaapi vda vdpau videotoolbox_hwaccel xvmc
3562 enable_weak xlib
3563
3564 enable_weak cuda cuvid nvenc vda_framework videotoolbox videotoolbox_encoder
3565
3566 disabled logging && logfile=/dev/null
3567
3568 die_license_disabled() {
3569     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3570 }
3571
3572 die_license_disabled_gpl() {
3573     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3574 }
3575
3576 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3577 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3578
3579 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3580 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3581
3582 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3583
3584 # Disable all the library-specific components if the library itself
3585 # is disabled, see AVCODEC_LIST and following _LIST variables.
3586
3587 disable_components(){
3588     disabled ${1} && disable $(
3589         eval components="\$$(toupper ${1})_COMPONENTS"
3590         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3591     )
3592 }
3593
3594 map 'disable_components $v' $LIBRARY_LIST
3595
3596 mkdir -p ffbuild
3597 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3598 set >> $logfile
3599
3600 test -n "$valgrind" && toolchain="valgrind-memcheck"
3601
3602 enabled ossfuzz && {
3603     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
3604     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
3605 }
3606
3607 case "$toolchain" in
3608     *-asan)
3609         cc_default="${toolchain%-asan}"
3610         add_cflags  -fsanitize=address
3611         add_ldflags -fsanitize=address
3612     ;;
3613     *-msan)
3614         cc_default="${toolchain%-msan}"
3615         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3616         add_ldflags -fsanitize=memory
3617     ;;
3618     *-tsan)
3619         cc_default="${toolchain%-tsan}"
3620         add_cflags  -fsanitize=thread -fPIE
3621         add_ldflags -fsanitize=thread -pie
3622         case "$toolchain" in
3623             gcc-tsan)
3624                 add_cflags  -fPIC
3625                 add_ldflags -fPIC
3626                 ;;
3627         esac
3628     ;;
3629     *-usan)
3630         cc_default="${toolchain%-usan}"
3631         add_cflags  -fsanitize=undefined
3632         add_ldflags -fsanitize=undefined
3633     ;;
3634     valgrind-*)
3635         target_exec_default="valgrind"
3636         case "$toolchain" in
3637             valgrind-massif)
3638                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3639                 ;;
3640             valgrind-memcheck)
3641                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3642                 ;;
3643         esac
3644     ;;
3645     msvc)
3646         # Check whether the current MSVC version needs the C99 converter.
3647         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3648         # support enough of C99 to build ffmpeg. Default to the new
3649         # behaviour if the regexp was unable to match anything, since this
3650         # successfully parses the version number of existing supported
3651         # versions that require the converter (MSVC 2010 and 2012).
3652         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3653         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3654             cc_default="cl"
3655             cxx_default="cl"
3656         else
3657             cc_default="c99wrap cl"
3658             cxx_default="c99wrap cl"
3659         fi
3660         ld_default="$source_path/compat/windows/mslink"
3661         nm_default="dumpbin -symbols"
3662         ar_default="lib"
3663         case "$arch" in
3664         arm*)
3665             as_default="armasm"
3666             ;;
3667         esac
3668         target_os_default="win32"
3669         # Use a relative path for TMPDIR. This makes sure all the
3670         # ffconf temp files are written with a relative path, avoiding
3671         # issues with msys/win32 path conversion for MSVC parameters
3672         # such as -Fo<file> or -out:<file>.
3673         TMPDIR=.
3674     ;;
3675     icl)
3676         cc_default="icl"
3677         ld_default="xilink"
3678         nm_default="dumpbin -symbols"
3679         ar_default="xilib"
3680         target_os_default="win32"
3681         TMPDIR=.
3682     ;;
3683     gcov)
3684         add_cflags  -fprofile-arcs -ftest-coverage
3685         add_ldflags -fprofile-arcs -ftest-coverage
3686     ;;
3687     llvm-cov)
3688         add_cflags -fprofile-arcs -ftest-coverage
3689         add_ldflags --coverage
3690     ;;
3691     hardened)
3692         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3693         add_cflags   -fno-strict-overflow -fstack-protector-all
3694         add_ldflags  -Wl,-z,relro -Wl,-z,now
3695         add_cflags   -fPIE
3696         add_ldexeflags -fPIE -pie
3697     ;;
3698     ?*)
3699         die "Unknown toolchain $toolchain"
3700     ;;
3701 esac
3702
3703 test -n "$cross_prefix" && enable cross_compile
3704
3705 if enabled cross_compile; then
3706     test -n "$arch" && test -n "$target_os" ||
3707         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3708 fi
3709
3710 ar_default="${cross_prefix}${ar_default}"
3711 cc_default="${cross_prefix}${cc_default}"
3712 cxx_default="${cross_prefix}${cxx_default}"
3713 nm_default="${cross_prefix}${nm_default}"
3714 pkg_config_default="${cross_prefix}${pkg_config_default}"
3715 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3716     ranlib_default="${cross_prefix}${ranlib_default} -D"
3717 else
3718     ranlib_default="${cross_prefix}${ranlib_default}"
3719 fi
3720 strip_default="${cross_prefix}${strip_default}"
3721 windres_default="${cross_prefix}${windres_default}"
3722
3723 sysinclude_default="${sysroot}/usr/include"
3724
3725 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3726     target_exec target_os yasmexe nvcc
3727 enabled cross_compile || host_cc_default=$cc
3728 set_default host_cc
3729
3730 pkg_config_fail_message=""
3731 if ! $pkg_config --version >/dev/null 2>&1; then
3732     warn "$pkg_config not found, library detection may fail."
3733     pkg_config=false
3734 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3735     pkg_config_fail_message="
3736 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3737 fi
3738
3739 if test $doxygen != $doxygen_default && \
3740   ! $doxygen --version >/dev/null 2>&1; then
3741     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3742 fi
3743
3744 exesuf() {
3745     case $1 in
3746         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3747     esac
3748 }
3749
3750 EXESUF=$(exesuf $target_os)
3751 HOSTEXESUF=$(exesuf $host_os)
3752
3753 # set temporary file name
3754 : ${TMPDIR:=$TEMPDIR}
3755 : ${TMPDIR:=$TMP}
3756 : ${TMPDIR:=/tmp}
3757
3758 if [ -n "$tempprefix" ] ; then
3759     mktemp(){
3760         tmpname="$tempprefix.${HOSTNAME}.${UID}"
3761         echo "$tmpname"
3762         mkdir "$tmpname"
3763     }
3764 elif ! check_cmd mktemp -u XXXXXX; then
3765     # simple replacement for missing mktemp
3766     # NOT SAFE FOR GENERAL USE
3767     mktemp(){
3768         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3769         echo "$tmpname"
3770         mkdir "$tmpname"
3771     }
3772 fi
3773
3774 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
3775     die "Unable to create temporary directory in $TMPDIR."
3776
3777 tmpfile(){
3778     tmp="${FFTMPDIR}/test"$2
3779     (set -C; exec > $tmp) 2> /dev/null ||
3780         die "Unable to create temporary file in $FFTMPDIR."
3781     eval $1=$tmp
3782 }
3783
3784 trap 'rm -rf -- "$FFTMPDIR"' EXIT
3785 trap 'exit 2' INT
3786
3787 tmpfile TMPASM .asm
3788 tmpfile TMPC   .c
3789 tmpfile TMPCPP .cpp
3790 tmpfile TMPE   $EXESUF
3791 tmpfile TMPH   .h
3792 tmpfile TMPM   .m
3793 tmpfile TMPO   .o
3794 tmpfile TMPS   .S
3795 tmpfile TMPSH  .sh
3796 tmpfile TMPV   .ver
3797
3798 unset -f mktemp
3799
3800 chmod +x $TMPE
3801
3802 # make sure we can execute files in $TMPDIR
3803 cat > $TMPSH 2>> $logfile <<EOF
3804 #! /bin/sh
3805 EOF
3806 chmod +x $TMPSH >> $logfile 2>&1
3807 if ! $TMPSH >> $logfile 2>&1; then
3808     cat <<EOF
3809 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3810 variable to another directory and make sure that it is not mounted noexec.
3811 EOF
3812     die "Sanity test failed."
3813 fi
3814
3815 armasm_flags(){
3816     for flag; do
3817         case $flag in
3818             # Filter out MSVC cl.exe options from cflags that shouldn't
3819             # be passed to gas-preprocessor
3820             -M[TD]*)                                            ;;
3821             *)                  echo $flag                      ;;
3822         esac
3823    done
3824 }
3825
3826 ccc_flags(){
3827     for flag; do
3828         case $flag in
3829             -std=c99)           echo -c99                       ;;
3830             -mcpu=*)            echo -arch ${flag#*=}           ;;
3831             -mieee)             echo -ieee                      ;;
3832             -O*|-fast)          echo $flag                      ;;
3833             -fno-math-errno)    echo -assume nomath_errno       ;;
3834             -g)                 echo -g3                        ;;
3835             -Wall)              echo -msg_enable level2         ;;
3836             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3837             -Wl,*)              echo $flag                      ;;
3838             -f*|-W*)                                            ;;
3839             *)                  echo $flag                      ;;
3840         esac
3841    done
3842 }
3843
3844 cparser_flags(){
3845     for flag; do
3846         case $flag in
3847             -Wno-switch)             echo -Wno-switch-enum ;;
3848             -Wno-format-zero-length) ;;
3849             -Wdisabled-optimization) ;;
3850             -Wno-pointer-sign)       echo -Wno-other ;;
3851             *)                       echo $flag ;;
3852         esac
3853     done
3854 }
3855
3856 msvc_common_flags(){
3857     for flag; do
3858         case $flag in
3859             # In addition to specifying certain flags under the compiler
3860             # specific filters, they must be specified here as well or else the
3861             # generic catch all at the bottom will print the original flag.
3862             -Wall)                ;;
3863             -Wextra)              ;;
3864             -std=c99)             ;;
3865             # Common flags
3866             -fomit-frame-pointer) ;;
3867             -g)                   echo -Z7 ;;
3868             -fno-math-errno)      ;;
3869             -fno-common)          ;;
3870             -fno-signed-zeros)    ;;
3871             -fPIC)                ;;
3872             -mthumb)              ;;
3873             -march=*)             ;;
3874             -lz)                  echo zlib.lib ;;
3875             -lx264)               echo libx264.lib ;;
3876             -lstdc++)             ;;
3877             -l*)                  echo ${flag#-l}.lib ;;
3878             -LARGEADDRESSAWARE)   echo $flag ;;
3879             -L*)                  echo -libpath:${flag#-L} ;;
3880             *)                    echo $flag ;;
3881         esac
3882     done
3883 }
3884
3885 msvc_flags(){
3886     msvc_common_flags "$@"
3887     for flag; do
3888         case $flag in
3889             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
3890                                        -wd4554 ;;
3891             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3892                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3893                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3894                                        -wd4307 \
3895                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
3896         esac
3897     done
3898 }
3899
3900 icl_flags(){
3901     msvc_common_flags "$@"
3902     for flag; do
3903         case $flag in
3904             # Despite what Intel's documentation says -Wall, which is supported
3905             # on Windows, does enable remarks so disable them here.
3906             -Wall)                echo $flag -Qdiag-disable:remark ;;
3907             -std=c99)             echo -Qstd=c99 ;;
3908             -flto)                echo -ipo ;;
3909         esac
3910     done
3911 }
3912
3913 icc_flags(){
3914     for flag; do
3915         case $flag in
3916             -flto)                echo -ipo ;;
3917             *)                    echo $flag ;;
3918         esac
3919     done
3920 }
3921
3922 pgi_flags(){
3923     for flag; do
3924         case $flag in
3925             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3926             -fomit-frame-pointer) echo -Mnoframe ;;
3927             -g)                   echo -gopt ;;
3928             *)                    echo $flag ;;
3929         esac
3930     done
3931 }
3932
3933 suncc_flags(){
3934     for flag; do
3935         case $flag in
3936             -march=*|-mcpu=*)
3937                 case "${flag#*=}" in
3938                     native)                   echo -xtarget=native       ;;
3939                     v9|niagara)               echo -xarch=sparc          ;;
3940                     ultrasparc)               echo -xarch=sparcvis       ;;
3941                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3942                     i586|pentium)             echo -xchip=pentium        ;;
3943                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3944                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3945                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3946                     pentium4*)          echo -xtarget=pentium4           ;;
3947                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3948                     *-sse3)             echo -xarch=sse3                 ;;
3949                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3950                     bonnell)                   echo -xarch=ssse3         ;;
3951                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3952                     westmere)                  echo -xtarget=westmere    ;;
3953                     silvermont)                echo -xarch=sse4_2        ;;
3954                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3955                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
3956                                                echo -xarch=avx           ;;
3957                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3958                     btver1)                    echo -xarch=amdsse4a      ;;
3959                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
3960                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3961                     k8|opteron|athlon64|athlon-fx)
3962                                                echo -xarch=sse2a         ;;
3963                     athlon*)                   echo -xarch=pentium_proa  ;;
3964                 esac
3965                 ;;
3966             -std=c99)             echo -xc99              ;;
3967             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3968             -fPIC)                echo -KPIC -xcode=pic32 ;;
3969             -W*,*)                echo $flag              ;;
3970             -f*-*|-W*|-mimpure-text)                      ;;
3971             -shared)              echo -G                 ;;
3972             *)                    echo $flag              ;;
3973         esac
3974     done
3975 }
3976
3977 tms470_flags(){
3978     for flag; do
3979         case $flag in
3980             -march=*|-mcpu=*)
3981                 case "${flag#*=}" in
3982                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3983                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3984                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3985                     armv6*|arm11*)          echo -mv=6   ;;
3986                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3987                                             echo -mv=5e  ;;
3988                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3989                 esac
3990                 ;;
3991             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3992             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3993             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3994             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3995             -msoft-float)   echo --float_support=vfplib       ;;
3996             -O[0-3]|-mf=*)  echo $flag                        ;;
3997             -g)             echo -g -mn                       ;;
3998             -pds=*)         echo $flag                        ;;
3999             -D*|-I*)        echo $flag                        ;;
4000             --gcc|--abi=*)  echo $flag                        ;;
4001             -me)            echo $flag                        ;;
4002         esac
4003     done
4004 }
4005
4006 probe_cc(){
4007     pfx=$1
4008     _cc=$2
4009     first=$3
4010
4011     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4012     unset _ld_o _ldflags _ld_lib _ld_path
4013     unset _depflags _DEPCMD _DEPFLAGS
4014     _flags_filter=echo
4015
4016     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4017         true # no-op to avoid reading stdin in following checks
4018     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4019         _type=llvm_gcc
4020         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4021         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4022         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4023         _cflags_speed='-O3'
4024         _cflags_size='-Os'
4025     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4026         _type=gcc
4027         gcc_version=$($_cc --version | head -n1)
4028         gcc_basever=$($_cc -dumpversion)
4029         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4030         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4031         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4032         case $gcc_basever in
4033             2) ;;
4034             2.*) ;;
4035             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4036         esac
4037         if [ "$first" = true ]; then
4038             case $gcc_basever in
4039                 4.2*)
4040                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4041             esac
4042         fi
4043         _cflags_speed='-O3'
4044         _cflags_size='-Os'
4045     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4046         _type=icc
4047         _ident=$($_cc --version | head -n1)
4048         _depflags='-MMD'
4049         _cflags_speed='-O3'
4050         _cflags_size='-Os'
4051         _cflags_noopt='-O1'
4052         _flags_filter=icc_flags
4053     elif $_cc -v 2>&1 | grep -q xlc; then
4054         _type=xlc
4055         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4056         _cflags_speed='-O5'
4057         _cflags_size='-O5 -qcompact'
4058     elif $_cc -V 2>/dev/null | grep -q Compaq; then
4059         _type=ccc
4060         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
4061         _DEPFLAGS='-M'
4062         _cflags_speed='-fast'
4063         _cflags_size='-O1'
4064         _flags_filter=ccc_flags
4065     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4066         test -d "$sysroot" || die "No valid sysroot specified."
4067         _type=armcc
4068         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4069         armcc_conf="$PWD/armcc.conf"
4070         $_cc --arm_linux_configure                 \
4071              --arm_linux_config_file="$armcc_conf" \
4072              --configure_sysroot="$sysroot"        \
4073              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4074              die "Error creating armcc configuration file."
4075         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4076         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4077         as_default="${cross_prefix}gcc"
4078         _depflags='-MMD'
4079         _cflags_speed='-O3'
4080         _cflags_size='-Os'
4081     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
4082         _type=tms470
4083         _ident=$($_cc -version | head -n1 | tr -s ' ')
4084         _flags='--gcc --abi=eabi -me'
4085         _cc_e='-ppl -fe=$@'
4086         _cc_o='-fe=$@'
4087         _depflags='-ppa -ppd=$(@:.o=.d)'
4088         _cflags_speed='-O3 -mf=5'
4089         _cflags_size='-O3 -mf=2'
4090         _flags_filter=tms470_flags
4091     elif $_cc -v 2>&1 | grep -q clang; then
4092         _type=clang
4093         _ident=$($_cc --version 2>/dev/null | head -n1)
4094         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4095         _cflags_speed='-O3'
4096         _cflags_size='-Oz'
4097     elif $_cc -V 2>&1 | grep -q Sun; then
4098         _type=suncc
4099         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4100         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4101         _DEPFLAGS='-xM1 -xc99'
4102         _ldflags='-std=c99'
4103         _cflags_speed='-O5'
4104         _cflags_size='-O5 -xspace'
4105         _flags_filter=suncc_flags
4106     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4107         _type=pathscale
4108         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4109         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4110         _cflags_speed='-O2'
4111         _cflags_size='-Os'
4112         _flags_filter='filter_out -Wdisabled-optimization'
4113     elif $_cc -v 2>&1 | grep -q Open64; then
4114         _type=open64
4115         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4116         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4117         _cflags_speed='-O2'
4118         _cflags_size='-Os'
4119         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4120     elif $_cc -V 2>&1 | grep -q Portland; then
4121         _type=pgi
4122         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
4123         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
4124         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
4125         _cflags_size="-O2 -Munroll=c:1 $opt_common"
4126         _cflags_noopt="-O"
4127         _flags_filter=pgi_flags
4128     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4129         _type=armasm
4130         _ident=$($_cc | head -n1)
4131         # 4509: "This form of conditional instruction is deprecated"
4132         _flags="-nologo -ignore 4509"
4133         _flags_filter=armasm_flags
4134     elif $_cc 2>&1 | grep -q Intel; then
4135         _type=icl
4136         _ident=$($_cc 2>&1 | head -n1)
4137         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4138         # Not only is O3 broken on 13.x+ but it is slower on all previous
4139         # versions (tested) as well.
4140         _cflags_speed="-O2"
4141         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4142         if $_cc 2>&1 | grep -q Linker; then
4143             _ld_o='-out:$@'
4144         else
4145             _ld_o='-Fe$@'
4146         fi
4147         _cc_o='-Fo$@'
4148         _cc_e='-P'
4149         _flags_filter=icl_flags
4150         _ld_lib='lib%.a'
4151         _ld_path='-libpath:'
4152         # -Qdiag-error to make icl error when seeing certain unknown arguments
4153         _flags='-nologo -Qdiag-error:4044,10157'
4154         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4155         # with MSVC which enables it by default.
4156         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4157         disable stripping
4158     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4159         # lld can emulate multiple different linkers; in ms link.exe mode,
4160         # the -? parameter gives the help output which contains an identifyable
4161         # string, while it gives an error in other modes.
4162         _type=lld-link
4163         # The link.exe mode doesn't have a switch for getting the version,
4164         # but we can force it back to gnu mode and get the version from there.
4165         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4166         _ld_o='-out:$@'
4167         _flags_filter=msvc_flags
4168         _ld_lib='lib%.a'
4169         _ld_path='-libpath:'
4170     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4171         _type=msvc
4172         _ident=$($_cc 2>&1 | head -n1)
4173         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4174         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4175         _cflags_speed="-O2"
4176         _cflags_size="-O1"
4177         _cflags_noopt="-O1"
4178         if $_cc -nologo- 2>&1 | grep -q Linker; then
4179             _ld_o='-out:$@'
4180         else
4181             _ld_o='-Fe$@'
4182         fi
4183         _cc_o='-Fo$@'
4184         _cc_e='-P -Fi$@'
4185         _flags_filter=msvc_flags
4186         _ld_lib='lib%.a'
4187         _ld_path='-libpath:'
4188         _flags='-nologo'
4189         disable stripping
4190     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4191         _type=cparser
4192         _ident=$($_cc --version | head -n1)
4193         _depflags='-MMD'
4194         _cflags_speed='-O4'
4195         _cflags_size='-O2'
4196         _flags_filter=cparser_flags
4197     fi
4198
4199     eval ${pfx}_type=\$_type
4200     eval ${pfx}_ident=\$_ident
4201 }
4202
4203 set_ccvars(){
4204     eval ${1}_C=\${_cc_c-\${${1}_C}}
4205     eval ${1}_E=\${_cc_e-\${${1}_E}}
4206     eval ${1}_O=\${_cc_o-\${${1}_O}}
4207
4208     if [ -n "$_depflags" ]; then
4209         eval ${1}_DEPFLAGS=\$_depflags
4210     else
4211         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4212         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4213         eval DEP${1}FLAGS=\$_flags
4214     fi
4215 }
4216
4217 probe_cc cc "$cc" "true"
4218 cflags_filter=$_flags_filter
4219 cflags_speed=$_cflags_speed
4220 cflags_size=$_cflags_size
4221 cflags_noopt=$_cflags_noopt
4222 add_cflags $_flags $_cflags
4223 cc_ldflags=$_ldflags
4224 set_ccvars CC
4225 set_ccvars CXX
4226
4227 probe_cc hostcc "$host_cc"
4228 host_cflags_filter=$_flags_filter
4229 host_cflags_speed=$_cflags_speed
4230 add_host_cflags  $_flags $_cflags
4231 set_ccvars HOSTCC
4232
4233 test -n "$cc_type" && enable $cc_type ||
4234     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4235
4236 : ${as_default:=$cc}
4237 : ${objcc_default:=$cc}
4238 : ${dep_cc_default:=$cc}
4239 : ${ld_default:=$cc}
4240 : ${host_ld_default:=$host_cc}
4241 set_default ar as objcc dep_cc ld ln_s host_ld windres
4242
4243 probe_cc as "$as"
4244 asflags_filter=$_flags_filter
4245 add_asflags $_flags $_cflags
4246 set_ccvars AS
4247
4248 probe_cc objcc "$objcc"
4249 objcflags_filter=$_flags_filter
4250 add_objcflags $_flags $_cflags
4251 set_ccvars OBJC
4252
4253 probe_cc ld "$ld"
4254 ldflags_filter=$_flags_filter
4255 add_ldflags $_flags $_ldflags
4256 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4257 LD_O=${_ld_o-$LD_O}
4258 LD_LIB=${_ld_lib-$LD_LIB}
4259 LD_PATH=${_ld_path-$LD_PATH}
4260
4261 probe_cc hostld "$host_ld"
4262 host_ldflags_filter=$_flags_filter
4263 add_host_ldflags $_flags $_ldflags
4264 HOSTLD_O=${_ld_o-$HOSTLD_O}
4265
4266 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4267     probe_cc depcc "$dep_cc"
4268     CCDEP=${_DEPCMD:-$DEPCMD}
4269     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4270     DEPCCFLAGS=$_flags
4271 fi
4272
4273 if $ar 2>&1 | grep -q Microsoft; then
4274     arflags="-nologo"
4275     ar_o='-out:$@'
4276 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
4277     arflags="rq"
4278     ar_o='$@'
4279 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
4280     arflags='-Xany -r -c'
4281     ar_o='$@'
4282 elif $ar 2>&1 | grep -q "\[D\] "; then
4283     arflags="rcD"
4284     ar_o='$@'
4285 else
4286     arflags="rc"
4287     ar_o='$@'
4288 fi
4289
4290 add_cflags $extra_cflags
4291 add_cxxflags $extra_cxxflags
4292 add_objcflags $extra_objcflags
4293 add_asflags $extra_cflags
4294
4295 if test -n "$sysroot"; then
4296     case "$cc_type" in
4297         gcc|llvm_gcc|clang)
4298             add_cppflags --sysroot="$sysroot"
4299             add_ldflags --sysroot="$sysroot"
4300 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
4301             add_cppflags -isysroot "$sysroot"
4302             add_ldflags -isysroot "$sysroot"
4303         ;;
4304         tms470)
4305             add_cppflags -I"$sysinclude"
4306             add_ldflags  --sysroot="$sysroot"
4307         ;;
4308     esac
4309 fi
4310
4311 if test "$cpu" = host; then
4312     enabled cross_compile &&
4313         die "--cpu=host makes no sense when cross-compiling."
4314
4315     case "$cc_type" in
4316         gcc|llvm_gcc)
4317             check_native(){
4318                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4319                 sed -n "/cc1.*$1=/{
4320                             s/.*$1=\\([^ ]*\\).*/\\1/
4321                             p
4322                             q
4323                         }" $TMPE
4324             }
4325             cpu=$(check_native -march || check_native -mcpu)
4326         ;;
4327         clang)
4328             check_native(){
4329                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4330                 sed -n "/cc1.*-target-cpu /{
4331                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4332                             p
4333                             q
4334                         }" $TMPE
4335             }
4336             cpu=$(check_native -march)
4337         ;;
4338     esac
4339
4340     test "${cpu:-host}" = host &&
4341         die "--cpu=host not supported with compiler $cc"
4342 fi
4343
4344 # Deal with common $arch aliases
4345 case "$arch" in
4346     aarch64|arm64)
4347         arch="aarch64"
4348     ;;
4349     arm*|iPad*|iPhone*)
4350         arch="arm"
4351     ;;
4352     mips*|IP*)
4353         case "$arch" in
4354         *el)
4355             add_cppflags -EL
4356             add_ldflags -EL
4357         ;;
4358         *eb)
4359             add_cppflags -EB
4360             add_ldflags -EB
4361         ;;
4362         esac
4363         arch="mips"
4364     ;;
4365     parisc*|hppa*)
4366         arch="parisc"
4367     ;;
4368     "Power Macintosh"|ppc*|powerpc*)
4369         arch="ppc"
4370     ;;
4371     s390|s390x)
4372         arch="s390"
4373     ;;
4374     sh4|sh)
4375         arch="sh4"
4376     ;;
4377     sun4*|sparc*)
4378         arch="sparc"
4379     ;;
4380     tilegx|tile-gx)
4381         arch="tilegx"
4382     ;;
4383     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4384         arch="x86"
4385     ;;
4386 esac
4387
4388 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4389 enable $arch
4390
4391 # Add processor-specific flags
4392 if enabled aarch64; then
4393
4394     case $cpu in
4395         armv*)
4396             cpuflags="-march=$cpu"
4397         ;;
4398         *)
4399             cpuflags="-mcpu=$cpu"
4400         ;;
4401     esac
4402
4403 elif enabled alpha; then
4404
4405     cpuflags="-mcpu=$cpu"
4406
4407 elif enabled arm; then
4408
4409     check_arm_arch() {
4410         check_cpp_condition stddef.h \
4411             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4412             $cpuflags
4413     }
4414
4415     probe_arm_arch() {
4416         if   check_arm_arch 4;        then echo armv4
4417         elif check_arm_arch 4T;       then echo armv4t
4418         elif check_arm_arch 5;        then echo armv5
4419         elif check_arm_arch 5E;       then echo armv5e
4420         elif check_arm_arch 5T;       then echo armv5t
4421         elif check_arm_arch 5TE;      then echo armv5te
4422         elif check_arm_arch 5TEJ;     then echo armv5te
4423         elif check_arm_arch 6;        then echo armv6
4424         elif check_arm_arch 6J;       then echo armv6j
4425         elif check_arm_arch 6K;       then echo armv6k
4426         elif check_arm_arch 6Z;       then echo armv6z
4427         elif check_arm_arch 6ZK;      then echo armv6zk
4428         elif check_arm_arch 6T2;      then echo armv6t2
4429         elif check_arm_arch 7;        then echo armv7
4430         elif check_arm_arch 7A  7_A;  then echo armv7-a
4431         elif check_arm_arch 7S;       then echo armv7-a
4432         elif check_arm_arch 7R  7_R;  then echo armv7-r
4433         elif check_arm_arch 7M  7_M;  then echo armv7-m
4434         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4435         elif check_arm_arch 8A  8_A;  then echo armv8-a
4436         fi
4437     }
4438
4439     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4440
4441     case $cpu in
4442         armv*)
4443             cpuflags="-march=$cpu"
4444             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4445         ;;
4446         *)
4447             cpuflags="-mcpu=$cpu"
4448             case $cpu in
4449                 cortex-a*)                               subarch=armv7a  ;;
4450                 cortex-r*)                               subarch=armv7r  ;;
4451                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4452                 arm11*)                                  subarch=armv6   ;;
4453                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4454                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4455                 *)                             subarch=$(probe_arm_arch) ;;
4456             esac
4457         ;;
4458     esac
4459
4460     case "$subarch" in
4461         armv5t*)    enable fast_clz                ;;
4462         armv[6-8]*)
4463             enable fast_clz
4464             disabled fast_unaligned || enable fast_unaligned
4465             ;;
4466     esac
4467
4468 elif enabled avr32; then
4469
4470     case $cpu in
4471         ap7[02]0[0-2])
4472             subarch="avr32_ap"
4473             cpuflags="-mpart=$cpu"
4474         ;;
4475         ap)
4476             subarch="avr32_ap"
4477             cpuflags="-march=$cpu"
4478         ;;
4479         uc3[ab]*)
4480             subarch="avr32_uc"
4481             cpuflags="-mcpu=$cpu"
4482         ;;
4483         uc)
4484             subarch="avr32_uc"
4485             cpuflags="-march=$cpu"
4486         ;;
4487     esac
4488
4489 elif enabled bfin; then
4490
4491     cpuflags="-mcpu=$cpu"
4492
4493 elif enabled mips; then
4494
4495     cpuflags="-march=$cpu"
4496
4497     if [ "$cpu" != "generic" ]; then
4498         disable mips32r2
4499         disable mips32r5
4500         disable mips64r2
4501         disable mips32r6
4502         disable mips64r6
4503         disable loongson2
4504         disable loongson3
4505
4506         case $cpu in
4507             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4508                 enable mips32r2
4509                 disable msa
4510             ;;
4511             p5600|i6400|p6600)
4512                 disable mipsdsp
4513                 disable mipsdspr2
4514             ;;
4515             loongson*)
4516                 enable loongson2
4517                 enable loongson3
4518                 enable local_aligned_8 local_aligned_16 local_aligned_32
4519                 enable simd_align_16
4520                 enable fast_64bit
4521                 enable fast_clz
4522                 enable fast_cmov
4523                 enable fast_unaligned
4524                 disable aligned_stack
4525                 disable mipsfpu
4526                 disable mipsdsp
4527                 disable mipsdspr2
4528                 case $cpu in
4529                     loongson3*)
4530                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4531                     ;;
4532                     loongson2e)
4533                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4534                     ;;
4535                     loongson2f)
4536                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4537                     ;;
4538                 esac
4539             ;;
4540             *)
4541                 # Unknown CPU. Disable everything.
4542                 warn "unknown CPU. Disabling all MIPS optimizations."
4543                 disable mipsfpu
4544                 disable mipsdsp
4545                 disable mipsdspr2
4546                 disable msa
4547                 disable mmi
4548             ;;
4549         esac
4550
4551         case $cpu in
4552             24kc)
4553                 disable mipsfpu
4554                 disable mipsdsp
4555                 disable mipsdspr2
4556             ;;
4557             24kf*)
4558                 disable mipsdsp
4559                 disable mipsdspr2
4560             ;;
4561             24kec|34kc|1004kc)
4562                 disable mipsfpu
4563                 disable mipsdspr2
4564             ;;
4565             24kef*|34kf*|1004kf*)
4566                 disable mipsdspr2
4567             ;;
4568             74kc)
4569                 disable mipsfpu
4570             ;;
4571             p5600)
4572                 enable mips32r5
4573                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4574             ;;
4575             i6400)
4576                 enable mips64r6
4577                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4578             ;;
4579             p6600)
4580                 enable mips64r6
4581                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4582             ;;
4583         esac
4584     else
4585         # We do not disable anything. Is up to the user to disable the unwanted features.
4586         warn 'generic cpu selected'
4587     fi
4588
4589 elif enabled ppc; then
4590
4591     disable ldbrx
4592
4593     case $(tolower $cpu) in
4594         601|ppc601|powerpc601)
4595             cpuflags="-mcpu=601"
4596             disable altivec
4597         ;;
4598         603*|ppc603*|powerpc603*)
4599             cpuflags="-mcpu=603"
4600             disable altivec
4601         ;;
4602         604*|ppc604*|powerpc604*)
4603             cpuflags="-mcpu=604"
4604             disable altivec
4605         ;;
4606         g3|75*|ppc75*|powerpc75*)
4607             cpuflags="-mcpu=750"
4608             disable altivec
4609         ;;
4610         g4|745*|ppc745*|powerpc745*)
4611             cpuflags="-mcpu=7450"
4612             disable vsx
4613         ;;
4614         74*|ppc74*|powerpc74*)
4615             cpuflags="-mcpu=7400"
4616             disable vsx
4617         ;;
4618         g5|970|ppc970|powerpc970)
4619             cpuflags="-mcpu=970"
4620             disable vsx
4621         ;;
4622         power[3-6]*)
4623             cpuflags="-mcpu=$cpu"
4624             disable vsx
4625         ;;
4626         power[7-8]*)
4627             cpuflags="-mcpu=$cpu"
4628         ;;
4629         cell)
4630             cpuflags="-mcpu=cell"
4631             enable ldbrx
4632             disable vsx
4633         ;;
4634         e500mc)
4635             cpuflags="-mcpu=e500mc"
4636             disable altivec
4637         ;;
4638         e500v2)
4639             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4640             disable altivec
4641             disable dcbzl
4642         ;;
4643         e500)
4644             cpuflags="-mcpu=8540 -mhard-float"
4645             disable altivec
4646             disable dcbzl
4647         ;;
4648     esac
4649
4650 elif enabled sparc; then
4651
4652     case $cpu in
4653         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4654             cpuflags="-mcpu=$cpu"
4655         ;;
4656         ultrasparc*|niagara[234])
4657             cpuflags="-mcpu=$cpu"
4658         ;;
4659     esac
4660
4661 elif enabled x86; then
4662
4663     case $cpu in
4664         i[345]86|pentium)
4665             cpuflags="-march=$cpu"
4666             disable i686
4667             disable mmx
4668         ;;
4669         # targets that do NOT support nopl and conditional mov (cmov)
4670         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4671             cpuflags="-march=$cpu"
4672             disable i686
4673         ;;
4674         # targets that do support nopl and conditional mov (cmov)
4675         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4676         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4677         |amdfam10|barcelona|b[dt]ver*|znver*)
4678             cpuflags="-march=$cpu"
4679             enable i686
4680             enable fast_cmov
4681         ;;
4682         # targets that do support conditional mov but on which it's slow
4683         pentium4|pentium4m|prescott|nocona)
4684             cpuflags="-march=$cpu"
4685             enable i686
4686             disable fast_cmov
4687         ;;
4688     esac
4689
4690 fi
4691
4692 if [ "$cpu" != generic ]; then
4693     add_cflags  $cpuflags
4694     add_asflags $cpuflags
4695     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4696 fi
4697
4698 # compiler sanity check
4699 check_exec <<EOF
4700 int main(void){ return 0; }
4701 EOF
4702 if test "$?" != 0; then
4703     echo "$cc is unable to create an executable file."
4704     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4705         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4706         echo "Only do this if you know what cross compiling means."
4707     fi
4708     die "C compiler test failed."
4709 fi
4710
4711 add_cppflags -D_ISOC99_SOURCE
4712 add_cxxflags -D__STDC_CONSTANT_MACROS
4713 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4714
4715 # some compilers silently accept -std=c11, so we also need to check that the
4716 # version macro is defined properly
4717 if test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L"; then
4718     add_cflags -std=c11
4719 else
4720     check_cflags -std=c99
4721 fi
4722
4723 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4724 #include <stdlib.h>
4725 EOF
4726 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4727 #include <stdlib.h>
4728 EOF
4729
4730 add_host_cppflags -D_ISOC99_SOURCE
4731 check_host_cflags -std=c99
4732 check_host_cflags -Wall
4733 check_host_cflags $host_cflags_speed
4734
4735 check_64bit(){
4736     arch32=$1
4737     arch64=$2
4738     expr=$3
4739     check_code cc "" "int test[2*($expr) - 1]" &&
4740         subarch=$arch64 || subarch=$arch32
4741 }
4742
4743 case "$arch" in
4744     aarch64|alpha|ia64)
4745         spic=$shared
4746     ;;
4747     mips)
4748         check_64bit mips mips64 '_MIPS_SIM > 1'
4749         spic=$shared
4750     ;;
4751     parisc)
4752         check_64bit parisc parisc64 'sizeof(void *) > 4'
4753         spic=$shared
4754     ;;
4755     ppc)
4756         check_64bit ppc ppc64 'sizeof(void *) > 4'
4757         spic=$shared
4758     ;;
4759     s390)
4760         check_64bit s390 s390x 'sizeof(void *) > 4'
4761         spic=$shared
4762     ;;
4763     sparc)
4764         check_64bit sparc sparc64 'sizeof(void *) > 4'
4765         spic=$shared
4766     ;;
4767     x86)
4768         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4769         # Treat x32 as x64 for now. Note it also needs spic=$shared
4770         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4771             subarch=x86_64
4772         if test "$subarch" = "x86_64"; then
4773             spic=$shared
4774         fi
4775     ;;
4776     ppc)
4777         check_cc <<EOF && subarch="ppc64"
4778         int test[(int)sizeof(char*) - 7];
4779 EOF
4780     ;;
4781 esac
4782
4783 enable $subarch
4784 enabled spic && enable_weak pic
4785
4786 # OS specific
4787 case $target_os in
4788     aix)
4789         SHFLAGS=-shared
4790         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4791         enabled shared && add_ldflags -Wl,-brtl
4792         ;;
4793     android)
4794         disable symver
4795         enable section_data_rel_ro
4796         SLIB_INSTALL_NAME='$(SLIBNAME)'
4797         SLIB_INSTALL_LINKS=
4798         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4799         ;;
4800     haiku)
4801         prefix_default="/boot/common"
4802         network_extralibs="-lnetwork"
4803         host_extralibs=
4804         ;;
4805     sunos)
4806         SHFLAGS='-shared -Wl,-h,$$(@F)'
4807         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4808         network_extralibs="-lsocket -lnsl"
4809         add_cppflags -D__EXTENSIONS__
4810         # When using suncc to build, the Solaris linker will mark
4811         # an executable with each instruction set encountered by
4812         # the Solaris assembler.  As our libraries contain their own
4813         # guards for processor-specific code, instead suppress
4814         # generation of the HWCAPS ELF section on Solaris x86 only.
4815         enabled_all suncc x86 &&
4816             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4817             add_ldflags -Wl,-M,mapfile
4818         nm_default='nm -P -g'
4819         version_script='-M'
4820         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
4821         ;;
4822     netbsd)
4823         disable symver
4824         oss_indev_extralibs="-lossaudio"
4825         oss_outdev_extralibs="-lossaudio"
4826         enabled gcc || check_ldflags -Wl,-zmuldefs
4827         ;;
4828     openbsd|bitrig)
4829         disable symver
4830         SHFLAGS='-shared'
4831         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4832         SLIB_INSTALL_LINKS=
4833         oss_indev_extralibs="-lossaudio"
4834         oss_outdev_extralibs="-lossaudio"
4835         ;;
4836     dragonfly)
4837         disable symver
4838         ;;
4839     freebsd)
4840         ;;
4841     bsd/os)
4842         add_extralibs -lpoll -lgnugetopt
4843         strip="strip -d"
4844         ;;
4845     darwin)
4846         enabled ppc && add_asflags -force_cpusubtype_ALL
4847         install_name_dir_default='$(SHLIBDIR)'
4848         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4849         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4850         strip="${strip} -x"
4851         add_ldflags -Wl,-dynamic,-search_paths_first
4852         SLIBSUF=".dylib"
4853         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4854         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4855         objformat="macho"
4856         enabled x86_64 && objformat="macho64"
4857         enabled_any pic shared x86_64 ||
4858             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4859         check_header dispatch/dispatch.h &&
4860             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
4861         version_script='-exported_symbols_list'
4862         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
4863         ;;
4864     msys*)
4865         die "Native MSYS builds are discouraged, please use the MINGW environment."
4866         ;;
4867     mingw32*|mingw64*)
4868         if test $target_os = "mingw32ce"; then
4869             disable network
4870         else
4871             target_os=mingw32
4872         fi
4873         LIBTARGET=i386
4874         if enabled x86_64; then
4875             LIBTARGET="i386:x86-64"
4876         elif enabled arm; then
4877             LIBTARGET=arm-wince
4878         fi
4879         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4880         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4881         shlibdir_default="$bindir_default"
4882         SLIBPREF=""
4883         SLIBSUF=".dll"
4884         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4885         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4886         dlltool="${cross_prefix}dlltool"
4887         if check_cmd lib.exe -list; then
4888             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4889             if enabled x86_64; then
4890                 LIBTARGET=x64
4891             fi
4892         elif check_cmd $dlltool --version; then
4893             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4894         fi
4895         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4896         SLIB_INSTALL_LINKS=
4897         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4898         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4899         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
4900         objformat="win32"
4901         ranlib=:
4902         enable dos_paths
4903         check_ldflags -Wl,--nxcompat,--dynamicbase
4904         # Lets work around some stupidity in binutils.
4905         # ld will strip relocations from executables even though we need them
4906         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4907         # however ld then forgets what the entry point should be (oops) so we
4908         # have to manually (re)set it.
4909         if enabled x86_32; then
4910             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4911         elif enabled x86_64; then
4912             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
4913             check_ldflags -Wl,--high-entropy-va # binutils 2.25
4914             # Set image base >4GB for extra entropy with HEASLR
4915             add_ldexeflags -Wl,--image-base,0x140000000
4916             append SHFLAGS -Wl,--image-base,0x180000000
4917         fi
4918         ;;
4919     win32|win64)
4920         disable symver
4921         if enabled shared; then
4922             # Link to the import library instead of the normal static library
4923             # for shared libs.
4924             LD_LIB='%.lib'
4925             # Cannot build both shared and static libs with MSVC or icl.
4926             disable static
4927         fi
4928         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4929         shlibdir_default="$bindir_default"
4930         SLIBPREF=""
4931         SLIBSUF=".dll"
4932         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4933         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4934         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4935         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4936         SLIB_INSTALL_LINKS=
4937         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4938         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4939         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4940         objformat="win32"
4941         ranlib=:
4942         enable dos_paths
4943         ;;
4944     cygwin*)
4945         target_os=cygwin
4946         shlibdir_default="$bindir_default"
4947         SLIBPREF="cyg"
4948         SLIBSUF=".dll"
4949         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4950         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4951         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4952         SLIB_INSTALL_LINKS=
4953         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4954         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4955         objformat="win32"
4956         enable dos_paths
4957         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4958         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4959         ;;
4960     *-dos|freedos|opendos)
4961         network_extralibs="-lsocket"
4962         objformat="coff"
4963         enable dos_paths
4964         add_cppflags -U__STRICT_ANSI__
4965         ;;
4966     linux)
4967         enable dv1394
4968         enable section_data_rel_ro
4969         ;;
4970     irix*)
4971         target_os=irix
4972         ranlib="echo ignoring ranlib"
4973         ;;
4974     os/2*)
4975         strip="lxlite -CS"
4976         objformat="aout"
4977         add_cppflags -D_GNU_SOURCE
4978         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
4979         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4980         LIBSUF="_s.a"
4981         SLIBPREF=""
4982         SLIBSUF=".dll"
4983         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4984         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4985         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
4986             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
4987             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
4988             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
4989             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
4990         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
4991             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
4992         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4993         SLIB_INSTALL_LINKS=
4994         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
4995         enable dos_paths
4996         enable_weak os2threads
4997         ;;
4998     gnu/kfreebsd)
4999         add_cppflags -D_BSD_SOURCE
5000         ;;
5001     gnu)
5002         ;;
5003     qnx)
5004         add_cppflags -D_QNX_SOURCE
5005         network_extralibs="-lsocket"
5006         ;;
5007     symbian)
5008         SLIBSUF=".dll"
5009         enable dos_paths
5010         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5011         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5012         add_ldflags -Wl,--target1-abs,--no-undefined \
5013                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5014                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5015         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5016                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5017                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5018         ;;
5019     osf1)
5020         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
5021         ;;
5022     minix)
5023         ;;
5024     none)
5025         ;;
5026     *)
5027         die "Unknown OS '$target_os'."
5028         ;;
5029 esac
5030
5031 # test if creating links works
5032 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5033 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5034 mkdir "$link_dest"
5035 $ln_s "$link_dest" "$link_name"
5036 touch "$link_dest/test_file"
5037 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5038     # create link to source path
5039     [ -e src ] && rm src
5040     $ln_s "$source_path" src
5041     source_link=src
5042 else
5043     # creating directory links doesn't work
5044     # fall back to using the full source path
5045     source_link="$source_path"
5046 fi
5047 # cleanup
5048 rm -r "$link_dest"
5049 rm -r "$link_name"
5050
5051 # determine libc flavour
5052
5053 probe_libc(){
5054     pfx=$1
5055     pfx_no_=${pfx%_}
5056     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5057     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5058         eval ${pfx}libc_type=uclibc
5059         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5060     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5061         eval ${pfx}libc_type=glibc
5062         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5063     # MinGW headers can be installed on Cygwin, so check for newlib first.
5064     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5065         eval ${pfx}libc_type=newlib
5066         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5067     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5068     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5069         eval ${pfx}libc_type=mingw64
5070         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5071             add_compat msvcrt/snprintf.o
5072             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5073         fi
5074         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5075         eval test \$${pfx_no_}cc_type = "gcc" &&
5076             add_${pfx}cppflags -D__printf__=__gnu_printf__
5077     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5078          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5079         eval ${pfx}libc_type=mingw32
5080         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5081             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5082             die "ERROR: MinGW32 runtime version must be >= 3.15."
5083         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5084         check_${pfx}cpp_condition _mingw.h "defined(_WIN32_WINNT) && _WIN32_WINNT >= 0x0502" ||
5085             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
5086         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5087             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5088         eval test \$${pfx_no_}cc_type = "gcc" &&
5089             add_${pfx}cppflags -D__printf__=__gnu_printf__
5090     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5091         eval ${pfx}libc_type=msvcrt
5092         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5093             if [ "$pfx" = host_ ]; then
5094                 add_host_cppflags -Dsnprintf=_snprintf
5095             else
5096                 add_compat strtod.o strtod=avpriv_strtod
5097                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5098                                              _snprintf=avpriv_snprintf  \
5099                                              vsnprintf=avpriv_vsnprintf
5100             fi
5101         fi
5102         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5103         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5104         # 0x601 by default unless something else is set by the user.
5105         # This can easily lead to us detecting functions only present
5106         # in such new versions and producing binaries requiring windows 7.0.
5107         # Therefore explicitly set the default to XP unless the user has
5108         # set something else on the command line.
5109         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5110         # family. For these cases, configure is free to use any functions
5111         # found in the SDK headers by default. (Alternatively, we could force
5112         # _WIN32_WINNT to 0x0602 in that case.)
5113         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5114             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
5115 #ifdef WINAPI_FAMILY
5116 #include <winapifamily.h>
5117 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5118 #error not desktop
5119 #endif
5120 #endif
5121 EOF
5122         if [ "$pfx" = "" ]; then
5123             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5124             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5125         fi
5126     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5127         eval ${pfx}libc_type=klibc
5128     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5129         eval ${pfx}libc_type=bionic
5130     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5131         eval ${pfx}libc_type=solaris
5132         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5133     fi
5134     check_${pfx}cc <<EOF
5135 #include <time.h>
5136 void *v = localtime_r;
5137 EOF
5138 test "$?" != 0 && check_${pfx}cc -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 <<EOF && add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5139 #include <time.h>
5140 void *v = localtime_r;
5141 EOF
5142
5143 }
5144
5145 probe_libc
5146 test -n "$libc_type" && enable libc_$libc_type
5147 probe_libc host_
5148 test -n "$host_libc_type" && enable host_libc_$host_libc_type
5149
5150 case $libc_type in
5151     bionic)
5152         ;;
5153 esac
5154
5155 # hacks for compiler/libc/os combinations
5156
5157 if enabled_all tms470 libc_glibc; then
5158     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
5159     add_cppflags -D__USER_LABEL_PREFIX__=
5160     add_cppflags -D__builtin_memset=memset
5161     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
5162     add_cflags   -pds=48    # incompatible redefinition of macro
5163 fi
5164
5165 if enabled_all ccc libc_glibc; then
5166     add_ldflags -Wl,-z,now  # calls to libots crash without this
5167 fi
5168
5169 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5170     add_cppflags '-I\$(SRC_PATH)/compat/float'
5171
5172 esc(){
5173     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
5174 }
5175
5176 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
5177
5178 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5179
5180 set_default libdir
5181 : ${shlibdir_default:="$libdir"}
5182 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5183
5184 set_default $PATHS_LIST
5185 set_default nm
5186
5187 # we need to build at least one lib type
5188 if ! enabled_any static shared; then
5189     cat <<EOF
5190 At least one library type must be built.
5191 Specify --enable-static to build the static libraries or --enable-shared to
5192 build the shared libraries as well. To only build the shared libraries specify
5193 --disable-static in addition to --enable-shared.
5194 EOF
5195     exit 1
5196 fi
5197
5198 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5199
5200 enable_weak_pic() {
5201     disabled pic && return
5202     enable pic
5203     add_cppflags -DPIC
5204     case "$target_os" in
5205     mingw*|cygwin*)
5206         ;;
5207     *)
5208         add_cflags -fPIC
5209         ;;
5210     esac
5211     add_asflags  -fPIC
5212 }
5213
5214 enabled pic && enable_weak_pic
5215
5216 check_cc <<EOF || die "Symbol mangling check failed."
5217 int ff_extern;
5218 EOF
5219 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5220 extern_prefix=${sym%%ff_extern*}
5221
5222 check_cc <<EOF && enable_weak inline_asm
5223 void foo(void) { __asm__ volatile ("" ::); }
5224 EOF
5225
5226 _restrict=
5227 for restrict_keyword in restrict __restrict__ __restrict; do
5228     check_cc <<EOF && _restrict=$restrict_keyword && break
5229 void foo(char * $restrict_keyword p);
5230 EOF
5231 done
5232
5233 check_cc <<EOF && enable pragma_deprecated
5234 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
5235 EOF
5236
5237 check_cc <<EOF && enable attribute_packed
5238 struct { int x; } __attribute__((packed)) x;
5239 EOF
5240
5241 check_cc <<EOF && enable attribute_may_alias
5242 union { int x; } __attribute__((may_alias)) x;
5243 EOF
5244
5245 check_cc <<EOF || die "endian test failed"
5246 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5247 EOF
5248 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5249
5250 if ! enabled ppc64 || enabled bigendian; then
5251     disable vsx
5252 fi
5253
5254 check_gas() {
5255     log "check_gas using '$as' as AS"
5256     # :vararg is used on aarch64, arm and ppc altivec
5257     check_as <<EOF || return 1
5258 .macro m n, y:vararg=0
5259 \n: .int \y
5260 .endm
5261 m x
5262 EOF
5263     # .altmacro is only used in arm asm
5264     ! enabled arm || check_as <<EOF || return 1
5265 .altmacro
5266 EOF
5267     enable gnu_as
5268     return 0
5269 }
5270
5271 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5272     nogas=:
5273     enabled_any arm aarch64 && nogas=die
5274     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5275     as_noop=-v
5276
5277     case $as_type in
5278         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5279         gcc)  gaspp_as_type=gas ;;
5280         *)    gaspp_as_type=$as_type ;;
5281     esac
5282
5283     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5284
5285     test "${as#*gas-preprocessor.pl}" != "$as" ||
5286     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5287         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5288
5289     if ! check_gas ; then
5290         as=${gas:=$as}
5291         check_gas || \
5292             $nogas "GNU assembler not found, install/update gas-preprocessor"
5293     fi
5294
5295     check_as <<EOF && enable as_func
5296 .func test
5297 .endfunc
5298 EOF
5299 fi
5300
5301 check_inline_asm inline_asm_labels '"1:\n"'
5302
5303 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5304
5305 if enabled aarch64; then
5306     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5307     # internal assembler in clang 3.3 does not support this instruction
5308     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5309     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5310
5311     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5312
5313 elif enabled alpha; then
5314
5315     check_cflags -mieee
5316
5317 elif enabled arm; then
5318
5319     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
5320
5321     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
5322 float func(float a, float b){ return a+b; }
5323 EOF
5324
5325     enabled thumb && check_cflags -mthumb || check_cflags -marm
5326
5327     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
5328         enable vfp_args
5329     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5330         enable vfp_args
5331     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5332         case "${cross_prefix:-$cc}" in
5333             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
5334             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
5335 __asm__ (".eabi_attribute 28, 1");
5336 int main(void) { return 0; }
5337 EOF
5338         esac
5339         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5340     fi
5341
5342     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5343     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5344     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5345     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5346     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5347     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5348     enabled setend  && check_insn setend  'setend be'
5349
5350     [ $target_os = linux ] || [ $target_os = android ] ||
5351         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5352             $ARCH_EXT_LIST_ARM
5353
5354     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5355
5356     check_as <<EOF && enable as_dn_directive
5357 ra .dn d0.i16
5358 .unreq ra
5359 EOF
5360     check_as <<EOF && enable as_fpu_directive
5361 .fpu neon
5362 EOF
5363
5364     # llvm's integrated assembler supports .object_arch from llvm 3.5
5365     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
5366 .object_arch armv4
5367 EOF
5368
5369     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5370
5371 elif enabled mips; then
5372
5373     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5374     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5375     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5376
5377     # Enable minimum ISA based on selected options
5378     if enabled mips64; then
5379         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5380         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5381         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5382     else
5383         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5384         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5385         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5386         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5387     fi
5388
5389     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5390     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5391     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
5392     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5393     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5394
5395     if enabled bigendian && enabled msa; then
5396         disable msa
5397     fi
5398
5399 elif enabled parisc; then
5400
5401     if enabled gcc; then
5402         case $($cc -dumpversion) in
5403             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5404         esac
5405     fi
5406
5407 elif enabled ppc; then
5408
5409     enable local_aligned_8 local_aligned_16 local_aligned_32
5410
5411     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5412     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5413     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5414     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5415
5416     # AltiVec flags: The FSF version of GCC differs from the Apple version
5417     if enabled altivec; then
5418         check_cflags -maltivec -mabi=altivec &&
5419         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
5420         check_cflags -faltivec
5421
5422         # check if our compiler supports Motorola AltiVec C API
5423         check_cc <<EOF || disable altivec
5424 $inc_altivec_h
5425 int main(void) {
5426     vector signed int v1 = (vector signed int) { 0 };
5427     vector signed int v2 = (vector signed int) { 1 };
5428     v1 = vec_add(v1, v2);
5429     return 0;
5430 }
5431 EOF
5432
5433         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5434     fi
5435
5436     if enabled vsx; then
5437         check_cflags -mvsx &&
5438         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
5439     fi
5440
5441     if enabled power8; then
5442         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
5443     fi
5444
5445 elif enabled x86; then
5446
5447     check_builtin rdtsc    intrin.h   "__rdtsc()"
5448     check_builtin mm_empty mmintrin.h "_mm_empty()"
5449
5450     enable local_aligned_8 local_aligned_16 local_aligned_32
5451
5452     # check whether EBP is available on x86
5453     # As 'i' is stored on the stack, this program will crash
5454     # if the base pointer is used to access it because the
5455     # base pointer is cleared in the inline assembly code.
5456     check_exec_crash <<EOF && enable ebp_available
5457 volatile int i=0;
5458 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5459 return i;
5460 EOF
5461
5462     # check whether EBX is available on x86
5463     check_inline_asm ebx_available '""::"b"(0)' &&
5464         check_inline_asm ebx_available '"":::"%ebx"'
5465
5466     # check whether xmm clobbers are supported
5467     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5468
5469     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5470         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5471
5472     # check whether binutils is new enough to compile SSSE3/MMXEXT
5473     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5474     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5475
5476     if ! disabled_any asm mmx yasm; then
5477         if check_cmd $yasmexe --version; then
5478             enabled x86_64 && yasm_extra="-m amd64"
5479             yasm_debug="-g dwarf2"
5480         elif check_cmd nasm -v; then
5481             yasmexe=nasm
5482             yasm_debug="-g -F dwarf"
5483             if enabled x86_64; then
5484                 case "$objformat" in
5485                     elf)   objformat=elf64 ;;
5486                     win32) objformat=win64 ;;
5487                 esac
5488             fi
5489         fi
5490
5491         YASMFLAGS="-f $objformat $yasm_extra"
5492         enabled pic               && append YASMFLAGS "-DPIC"
5493         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
5494         case "$objformat" in
5495             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
5496         esac
5497
5498         check_yasm "movbe ecx, [5]" && enable yasm ||
5499             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
5500         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5501         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5502         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5503         check_yasm "CPU amdnop" || disable cpunop
5504     fi
5505
5506     case "$cpu" in
5507         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5508             disable fast_clz
5509         ;;
5510     esac
5511
5512 fi
5513
5514 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
5515
5516 check_ldflags -Wl,--as-needed
5517 check_ldflags -Wl,-z,noexecstack
5518
5519 if check_func dlopen && check_func dlsym; then
5520     ldl=
5521 elif check_func dlopen -ldl && check_func dlsym -ldl; then
5522     ldl=-ldl
5523 fi
5524
5525 avisynth_demuxer_extralibs='$ldl'
5526 cuda_extralibs='$ldl'
5527 decklink_outdev_extralibs="$decklink_outdev_extralibs $ldl"
5528 decklink_indev_extralibs="$decklink_indev_extralibs $ldl"
5529 frei0r_filter_extralibs='$ldl'
5530 frei0r_src_filter_extralibs='$ldl'
5531 ladspa_filter_extralibs='$ldl'
5532 nvenc_extralibs='$ldl'
5533 coreimage_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5534 coreimagesrc_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5535
5536 if ! disabled network; then
5537     check_func getaddrinfo $network_extralibs
5538     check_func inet_aton $network_extralibs
5539
5540     check_type netdb.h "struct addrinfo"
5541     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5542     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5543     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5544     check_type poll.h "struct pollfd"
5545     check_type netinet/sctp.h "struct sctp_event_subscribe"
5546     check_struct "sys/socket.h" "struct msghdr" msg_flags
5547     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5548     check_type netinet/in.h "struct sockaddr_in6"
5549     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5550     check_type "sys/types.h sys/socket.h" socklen_t
5551
5552     # Prefer arpa/inet.h over winsock2
5553     if check_header arpa/inet.h ; then
5554         check_func closesocket
5555     elif check_header winsock2.h ; then
5556         check_func_headers winsock2.h closesocket -lws2 &&
5557             network_extralibs="-lws2" ||
5558         { check_func_headers winsock2.h closesocket -lws2_32 &&
5559             network_extralibs="-lws2_32"; } || disable winsock2_h network
5560         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5561
5562         check_type ws2tcpip.h socklen_t
5563         check_type ws2tcpip.h "struct addrinfo"
5564         check_type ws2tcpip.h "struct group_source_req"
5565         check_type ws2tcpip.h "struct ip_mreq_source"
5566         check_type ws2tcpip.h "struct ipv6_mreq"
5567         check_type winsock2.h "struct pollfd"
5568         check_struct winsock2.h "struct sockaddr" sa_len
5569         check_type ws2tcpip.h "struct sockaddr_in6"
5570         check_type ws2tcpip.h "struct sockaddr_storage"
5571     else
5572         disable network
5573     fi
5574 fi
5575
5576 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5577 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5578 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5579 check_builtin sarestart signal.h "SA_RESTART"
5580 check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" -lpthread
5581 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5582 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5583 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5584 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5585
5586 case "$custom_allocator" in
5587     jemalloc)
5588         # jemalloc by default does not use a prefix
5589         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5590     ;;
5591     tcmalloc)
5592         require_pkg_config libtcmalloc gperftools/tcmalloc.h tc_malloc
5593         malloc_prefix=tc_
5594     ;;
5595 esac
5596
5597 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5598 check_func  ${malloc_prefix}memalign            && enable memalign
5599 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5600
5601 check_func  access
5602 check_func_headers stdlib.h arc4random
5603 check_func_headers time.h clock_gettime ||
5604     { check_lib clock_gettime time.h clock_gettime -lrt && LIBRT="-lrt"; }
5605 check_func  fcntl
5606 check_func  fork
5607 check_func  gethrtime
5608 check_func  getopt
5609 check_func  getrusage
5610 check_func  gettimeofday
5611 check_func  isatty
5612 check_func  mach_absolute_time
5613 check_func  mkstemp
5614 check_func  mmap
5615 check_func  mprotect
5616 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5617 check_func_headers time.h nanosleep ||
5618     { check_lib nanosleep time.h nanosleep -lrt && LIBRT="-lrt"; }
5619 check_func  sched_getaffinity
5620 check_func  setrlimit
5621 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5622 check_func  strerror_r
5623 check_func  sysconf
5624 check_func  sysctl
5625 check_func  usleep
5626
5627 check_func_headers conio.h kbhit
5628 check_func_headers io.h setmode
5629 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5630 check_func_headers stdlib.h getenv
5631 check_func_headers sys/stat.h lstat
5632
5633 check_func_headers windows.h GetProcessAffinityMask
5634 check_func_headers windows.h GetProcessTimes
5635 check_func_headers windows.h GetSystemTimeAsFileTime
5636 check_func_headers windows.h LoadLibrary
5637 check_func_headers windows.h MapViewOfFile
5638 check_func_headers windows.h PeekNamedPipe
5639 check_func_headers windows.h SetConsoleTextAttribute
5640 check_func_headers windows.h SetConsoleCtrlHandler
5641 check_func_headers windows.h Sleep
5642 check_func_headers windows.h VirtualAlloc
5643 check_struct windows.h "CONDITION_VARIABLE" Ptr
5644 check_func_headers glob.h glob
5645 enabled xlib &&
5646     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5647
5648 check_header AudioToolbox/AudioToolbox.h
5649 check_header d3d11.h
5650 check_header direct.h
5651 check_header dirent.h
5652 check_header dlfcn.h
5653 check_header dxva.h
5654 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5655 check_header io.h
5656 check_header libcrystalhd/libcrystalhd_if.h
5657 check_header mach/mach_time.h
5658 check_header malloc.h
5659 check_header net/udplite.h
5660 check_header poll.h
5661 check_header sys/mman.h
5662 check_header sys/param.h
5663 check_header sys/resource.h
5664 check_header sys/select.h
5665 check_header sys/time.h
5666 check_header sys/un.h
5667 check_header termios.h
5668 check_header unistd.h
5669 check_header valgrind/valgrind.h
5670 check_header VideoDecodeAcceleration/VDADecoder.h
5671 check_header VideoToolbox/VideoToolbox.h
5672 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5673 enabled videotoolbox && check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferColorPrimaries_ITU_R_2020 -framework CoreVideo
5674 check_header windows.h
5675 check_header X11/extensions/XvMClib.h
5676 check_header asm/types.h
5677
5678 # it seems there are versions of clang in some distros that try to use the
5679 # gcc headers, which explodes for stdatomic
5680 # so we also check that atomics actually work here
5681 check_builtin stdatomic_h stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0)"
5682
5683 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
5684 check_lib wincrypt "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
5685 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
5686
5687 check_lib coreservices "CoreServices/CoreServices.h" UTGetOSTypeFromString "-framework CoreServices"
5688
5689 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5690
5691 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5692 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5693 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5694 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5695 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5696
5697 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
5698 check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
5699 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
5700 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
5701 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5702 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5703 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
5704 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
5705
5706 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5707
5708 check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
5709
5710 if ! disabled w32threads && ! enabled pthreads; then
5711     check_func_headers "windows.h process.h" _beginthreadex &&
5712         enable w32threads || disable w32threads
5713     if ! enabled w32threads && enabled winrt; then
5714         check_func_headers "windows.h" CreateThread &&
5715             enable w32threads || disable w32threads
5716     fi
5717 fi
5718
5719 # check for some common methods of building with pthread support
5720 # do this before the optional library checks as some of them require pthreads
5721 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5722     if check_lib pthreads pthread.h pthread_join   -pthread &&
5723        check_lib pthreads pthread.h pthread_create -pthread; then
5724         add_cflags -pthread
5725     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
5726          check_lib pthreads pthread.h pthread_create -pthreads; then
5727         add_cflags -pthreads
5728     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
5729          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
5730         add_cflags -ldl -pthread
5731     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
5732          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
5733         :
5734     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
5735          check_lib pthreads pthread.h pthread_create -lpthread; then
5736         :
5737     elif check_func pthread_join && check_func pthread_create; then
5738         enable pthreads
5739     fi
5740     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5741 fi
5742
5743
5744 if enabled pthreads; then
5745   check_func pthread_cancel
5746 fi
5747
5748 enabled pthreads &&
5749     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)"
5750
5751 disabled  zlib || check_lib zlib   zlib.h      zlibVersion    -lz
5752 disabled bzlib || check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
5753 disabled  lzma || check_lib lzma   lzma.h lzma_version_number -llzma
5754
5755 check_lib libm math.h sin -lm && LIBM="-lm"
5756 disabled crystalhd || check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
5757
5758 atan2f_args=2
5759 copysign_args=2
5760 hypot_args=2
5761 ldexpf_args=2
5762 powf_args=2
5763
5764 for func in $MATH_FUNCS; do
5765     eval check_mathfunc $func \${${func}_args:-1} $LIBM
5766 done
5767
5768 for func in $COMPLEX_FUNCS; do
5769     eval check_complexfunc $func \${${func}_args:-1}
5770 done
5771
5772 # these are off by default, so fail if requested and not available
5773 enabled avfoundation_indev && { check_header_objcc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
5774 enabled avfoundation_indev && { check_lib avfoundation_indev CoreGraphics/CoreGraphics.h CGGetActiveDisplayList -framework CoreGraphics ||
5775                                 check_lib avfoundation_indev ApplicationServices/ApplicationServices.h CGGetActiveDisplayList -framework ApplicationServices; }
5776 enabled cuda_sdk          && require cuda_sdk cuda.h cuCtxCreate -lcuda
5777 enabled cuvid             && { enabled cuda ||
5778                                die "ERROR: CUVID requires CUDA"; }
5779 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5780 enabled coreimage_filter  && { check_header_objcc QuartzCore/CoreImage.h || disable coreimage_filter; }
5781 enabled coreimagesrc_filter && { check_header_objcc QuartzCore/CoreImage.h || disable coreimagesrc_filter; }
5782 enabled decklink          && { { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; } &&
5783                                { check_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a060100" || die "ERROR: Decklink API version must be >= 10.6.1."; } }
5784 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
5785 enabled gmp               && require gmp gmp.h mpz_export -lgmp
5786 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
5787 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads || die "ERROR: jni not found"; }
5788 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
5789 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5790 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
5791 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
5792 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
5793 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5794                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
5795                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5796 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
5797 enabled libdc1394         && require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new
5798 enabled libfdk_aac        && { use_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5799                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5800                                  warn "using libfdk without pkg-config"; } }
5801 flite_extralibs="-lflite_cmu_time_awb -lflite_cmu_us_awb -lflite_cmu_us_kal -lflite_cmu_us_kal16 -lflite_cmu_us_rms -lflite_cmu_us_slt -lflite_usenglish -lflite_cmulex -lflite"
5802 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
5803 enabled fontconfig        && enable libfontconfig
5804 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
5805 enabled libfreetype       && require_pkg_config freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
5806 enabled libfribidi        && require_pkg_config fribidi fribidi.h fribidi_version_info
5807 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
5808 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5809                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
5810                                done || die "ERROR: libgsm not found"; }
5811 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
5812 enabled libkvazaar        && require_pkg_config "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5813 # While it may appear that require is being used as a pkg-config
5814 # fallback for libmfx, it is actually being used to detect a different
5815 # installation route altogether.  If libmfx is installed via the Intel
5816 # Media SDK or Intel Media Server Studio, these don't come with
5817 # pkg-config support.  Instead, users should make sure that the build
5818 # can find the libraries and headers through other means.
5819 enabled libmfx            && { use_pkg_config libmfx "mfx/mfxvideo.h" MFXInit ||
5820                                { require libmfx "mfx/mfxvideo.h" MFXInit -llibmfx && warn "using libmfx without pkg-config"; } }
5821 enabled libmodplug        && require_pkg_config libmodplug libmodplug/modplug.h ModPlug_Load
5822 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5823 enabled libnpp            && require libnpp npp.h nppGetLibVersion -lnppi -lnppc
5824 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5825 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5826 enabled libopencv         && { check_header opencv2/core/core_c.h &&
5827                                { use_pkg_config opencv opencv2/core/core_c.h cvCreateImageHeader ||
5828                                  require opencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
5829                                require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader; }
5830 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
5831 enabled libopenjpeg       && { { check_lib libopenjpeg openjpeg-2.1/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5832                                check_lib libopenjpeg openjpeg-2.1/openjpeg.h opj_version -lopenjp2 ||
5833                                { check_lib libopenjpeg openjpeg-2.0/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5834                                { check_lib libopenjpeg openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5835                                { check_lib libopenjpeg openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5836                                die "ERROR: libopenjpeg not found"; }
5837 enabled libopenmpt        && require_pkg_config "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create
5838 enabled libopus           && {
5839     enabled libopus_decoder && {
5840         require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
5841     }
5842     enabled libopus_encoder && {
5843         require_pkg_config opus opus_multistream.h opus_multistream_surround_encoder_create
5844     }
5845 }
5846 enabled libpulse          && require_pkg_config libpulse pulse/pulseaudio.h pa_context_new
5847 enabled librsvg           && require_pkg_config librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
5848 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
5849 enabled librubberband     && require_pkg_config "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new
5850 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
5851 enabled libsmbclient      && { use_pkg_config smbclient libsmbclient.h smbc_init ||
5852                                require smbclient libsmbclient.h smbc_init -lsmbclient; }
5853 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy
5854 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr && LIBSOXR="-lsoxr"
5855 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
5856 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
5857 enabled libtesseract      && require_pkg_config tesseract tesseract/capi.h TessBaseAPICreate
5858 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
5859 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5860                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5861                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5862 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
5863 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5864 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5865 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
5866
5867 enabled libvpx            && {
5868     enabled libvpx_vp8_decoder && {
5869         use_pkg_config "vpx >= 0.9.1" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
5870             check_lib libvpx_vp8_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
5871                 die "ERROR: libvpx decoder version must be >=0.9.1";
5872     }
5873     enabled libvpx_vp8_encoder && {
5874         use_pkg_config "vpx >= 0.9.7" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
5875             check_lib libvpx_vp8_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
5876                 die "ERROR: libvpx encoder version must be >=0.9.7";
5877     }
5878     enabled libvpx_vp9_decoder && {
5879         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
5880             check_lib libvpx_vp9_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx
5881     }
5882     enabled libvpx_vp9_encoder && {
5883         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
5884             check_lib libvpx_vp9_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx
5885     }
5886     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
5887         die "libvpx enabled but no supported decoders found"
5888     fi
5889 }
5890
5891 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
5892 enabled libwebp           && {
5893     enabled libwebp_encoder      && require_pkg_config "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
5894     enabled libwebp_anim_encoder && { use_pkg_config "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit || disable libwebp_anim_encoder; } }
5895 enabled libx264           && { use_pkg_config x264 "stdint.h x264.h" x264_encoder_encode ||
5896                                { require libx264 "stdint.h x264.h" x264_encoder_encode -lx264 &&
5897                                  warn "using libx264 without pkg-config"; } } &&
5898                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
5899                                die "ERROR: libx264 must be installed and version must be >= 0.118."; } &&
5900                              { check_cpp_condition x264.h "X264_MPEG2" &&
5901                                enable libx262; }
5902 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
5903                              { check_cpp_condition x265.h "X265_BUILD >= 68" ||
5904                                die "ERROR: libx265 version must be >= 68."; }
5905 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode -lxavs
5906 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
5907 enabled libzimg           && require_pkg_config "zimg >= 2.3.0" zimg.h zimg_get_api_version
5908 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
5909 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi &&
5910                              { check_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
5911                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
5912 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
5913 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
5914                                { ! enabled cross_compile &&
5915                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
5916                                  add_ldflags -L/opt/vc/lib/ &&
5917                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
5918                                die "ERROR: mmal not found" &&
5919                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
5920 enabled netcdf            && require_pkg_config netcdf netcdf.h nc_inq_libvers
5921 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
5922                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
5923                                die "ERROR: openal not found"; } &&
5924                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
5925                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
5926 enabled opencl            && { check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
5927                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
5928                                die "ERROR: opencl not found"; } &&
5929                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
5930                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
5931                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
5932 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
5933                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
5934                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
5935                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
5936                                die "ERROR: opengl not found."
5937                              }
5938 enabled omx_rpi           && { check_header OMX_Core.h ||
5939                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_header OMX_Core.h ; } ||
5940                                die "ERROR: OpenMAX IL headers not found"; }
5941 enabled omx               && { check_header OMX_Core.h || die "ERROR: OpenMAX IL headers not found"; }
5942 enabled openssl           && { use_pkg_config openssl openssl/ssl.h OPENSSL_init_ssl ||
5943                                use_pkg_config openssl openssl/ssl.h SSL_library_init ||
5944                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
5945                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
5946                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
5947                                die "ERROR: openssl not found"; }
5948 enabled qtkit_indev      && { check_header_objcc QTKit/QTKit.h || disable qtkit_indev; }
5949
5950 if enabled gcrypt; then
5951     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
5952     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
5953         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
5954         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
5955         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
5956             die "ERROR: gcrypt not found"
5957         add_cflags $gcrypt_cflags && add_extralibs $gcrypt_extralibs
5958     else
5959         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
5960     fi
5961 fi
5962
5963 disabled sdl && disable sdl2
5964 if ! disabled sdl2; then
5965     SDL2_CONFIG="${cross_prefix}sdl2-config"
5966     if check_pkg_config sdl2 SDL_events.h SDL_PollEvent; then
5967         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
5968         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
5969         check_func SDL_Init $sdl2_extralibs $sdl2_cflags && enable sdl2
5970     else
5971       if "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
5972         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
5973         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
5974         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
5975         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
5976         check_func SDL_Init $sdl2_extralibs $sdl2_cflags && enable sdl2
5977       fi
5978     fi
5979     if test $target_os = "mingw32"; then
5980         sdl2_extralibs="$sdl2_extralibs -mconsole"
5981     fi
5982 fi
5983 enabled sdl2 && enable sdl && add_cflags $sdl2_cflags && add_extralibs $sdl2_extralibs
5984
5985 if enabled decklink; then
5986     case $target_os in
5987         mingw32*|mingw64*|win32|win64)
5988             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
5989             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
5990             ;;
5991     esac
5992 fi
5993
5994 disabled securetransport || { check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5995     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext SecItemImport" "-Wl,-framework,CoreFoundation -Wl,-framework,Security"; }
5996
5997 disabled schannel || { check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
5998                        check_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" && enable schannel && add_extralibs -lsecur32; }
5999
6000 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6001 enabled makeinfo \
6002     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6003     && enable makeinfo_html || disable makeinfo_html
6004 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6005 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6006 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6007 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6008
6009 check_header linux/fb.h
6010 check_header linux/videodev.h
6011 check_header linux/videodev2.h
6012 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
6013
6014 check_header sys/videoio.h
6015 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
6016
6017 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6018 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6019 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6020 # w32api 3.12 had it defined wrong
6021 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
6022
6023 check_type "dshow.h" IBaseFilter
6024
6025 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6026 { check_header dev/bktr/ioctl_meteor.h &&
6027   check_header dev/bktr/ioctl_bt848.h; } ||
6028 { check_header machine/ioctl_meteor.h &&
6029   check_header machine/ioctl_bt848.h; } ||
6030 { check_header dev/video/meteor/ioctl_meteor.h &&
6031   check_header dev/video/bktr/ioctl_bt848.h; } ||
6032 check_header dev/ic/bt8xx.h
6033
6034 if check_struct sys/soundcard.h audio_buf_info bytes; then
6035     enable_safe sys/soundcard.h
6036 else
6037     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
6038     #include <sys/soundcard.h>
6039     audio_buf_info abc;
6040 EOF
6041 fi
6042 check_header soundcard.h
6043
6044 enabled_any alsa_indev alsa_outdev &&
6045     check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
6046
6047 enabled jack_indev && check_lib jack jack/jack.h jack_client_open -ljack &&
6048     check_func jack_port_get_latency_range -ljack
6049
6050 enabled_any sndio_indev sndio_outdev && check_lib sndio sndio.h sio_open -lsndio
6051
6052 if enabled libcdio; then
6053     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6054     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6055     die "ERROR: No usable libcdio/cdparanoia found"
6056 fi
6057
6058 if ! disabled libxcb; then
6059     check_pkg_config "xcb >= 1.4" xcb/xcb.h xcb_connect || {
6060         enabled libxcb && die "ERROR: libxcb >= 1.4 not found";
6061     } && enable libxcb
6062
6063 if enabled libxcb; then
6064     disabled libxcb_shm || {
6065         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
6066             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
6067         } && check_header sys/shm.h && enable libxcb_shm; }
6068
6069     disabled libxcb_xfixes || {
6070         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
6071             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
6072         } && enable libxcb_xfixes; }
6073
6074     disabled libxcb_shape || {
6075         check_pkg_config xcb-shape xcb/shape.h xcb_shape_get_rectangles || {
6076             enabled libxcb_shape && die "ERROR: libxcb_shape not found";
6077         } && enable libxcb_shape; }
6078
6079     add_cflags $xcb_cflags $xcb_shm_cflags $xcb_xfixes_cflags $xcb_shape_cflags
6080     add_extralibs $xcb_extralibs $xcb_shm_extralibs $xcb_xfixes_extralibs $xcb_shape_extralibs
6081 fi
6082 fi
6083
6084 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6085
6086 enabled dxva2api_h &&
6087     check_cc <<EOF && enable dxva2api_cobj
6088 #define _WIN32_WINNT 0x0600
6089 #define COBJMACROS
6090 #include <windows.h>
6091 #include <d3d9.h>
6092 #include <dxva2api.h>
6093 int main(void) { IDirectXVideoDecoder *o = NULL; IDirectXVideoDecoder_Release(o); return 0; }
6094 EOF
6095
6096 enabled dxva2 &&
6097     check_lib dxva2_lib windows.h CoTaskMemFree -lole32
6098
6099 enabled vaapi &&
6100     check_lib vaapi va/va.h vaInitialize -lva
6101
6102 enabled vaapi &&
6103     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
6104     disable vaapi
6105
6106 enabled vaapi &&
6107     check_lib vaapi_drm "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm
6108
6109 enabled vaapi &&
6110     check_lib vaapi_x11 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 -lX11
6111
6112 enabled vdpau &&
6113     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
6114     disable vdpau
6115
6116 enabled vdpau &&
6117     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6118
6119 if enabled x86; then
6120     case $target_os in
6121         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6122             ;;
6123         android)
6124             hevc_vaapi_hwaccel_deps="vaapi"
6125             vp9_vaapi_hwaccel_deps="vaapi"
6126             enable vaapi vaapi_android
6127             ;&
6128         *)
6129             disable cuda cuvid nvenc
6130             ;;
6131     esac
6132 else
6133     disable cuda cuvid nvenc
6134 fi
6135
6136 enabled nvenc &&
6137     check_cc -I$source_path <<EOF || disable nvenc
6138 #include "compat/nvenc/nvEncodeAPI.h"
6139 NV_ENCODE_API_FUNCTION_LIST flist;
6140 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6141 int main(void) { return 0; }
6142 EOF
6143
6144 # Funny iconv installations are not unusual, so check it after all flags have been set
6145 disabled iconv || check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6146
6147 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6148
6149 # add some useful compiler flags if supported
6150 check_cflags -Wdeclaration-after-statement
6151 check_cflags -Wall
6152 check_cflags -Wdisabled-optimization
6153 check_cflags -Wpointer-arith
6154 check_cflags -Wredundant-decls
6155 check_cflags -Wwrite-strings
6156 check_cflags -Wtype-limits
6157 check_cflags -Wundef
6158 check_cflags -Wmissing-prototypes
6159 check_cflags -Wno-pointer-to-int-cast
6160 check_cflags -Wstrict-prototypes
6161 check_cflags -Wempty-body
6162
6163 if enabled extra_warnings; then
6164     check_cflags -Wcast-qual
6165     check_cflags -Wextra
6166     check_cflags -Wpedantic
6167 fi
6168
6169 check_disable_warning(){
6170     warning_flag=-W${1#-Wno-}
6171     test_cflags $warning_flag && add_cflags $1
6172 }
6173
6174 check_disable_warning -Wno-parentheses
6175 check_disable_warning -Wno-switch
6176 check_disable_warning -Wno-format-zero-length
6177 check_disable_warning -Wno-pointer-sign
6178 check_disable_warning -Wno-unused-const-variable
6179
6180 check_disable_warning_headers(){
6181     warning_flag=-W${1#-Wno-}
6182     test_cflags $warning_flag && add_cflags_headers $1
6183 }
6184
6185 check_disable_warning_headers -Wno-deprecated-declarations
6186 check_disable_warning_headers -Wno-unused-variable
6187
6188 check_cc <<EOF && enable blocks_extension
6189 void (^block)(void);
6190 EOF
6191
6192 # add some linker flags
6193 check_ldflags -Wl,--warn-common
6194 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6195 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
6196 enabled rpath && add_ldlibflags -Wl,-rpath,$libdir
6197 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6198
6199 # add some strip flags
6200 # -wN '..@*' is more selective than -x, but not available everywhere.
6201 check_stripflags -wN \'..@*\' || check_stripflags -x
6202
6203 enabled neon_clobber_test &&
6204     check_ldflags -Wl,--wrap,avcodec_open2              \
6205                   -Wl,--wrap,avcodec_decode_audio4      \
6206                   -Wl,--wrap,avcodec_decode_video2      \
6207                   -Wl,--wrap,avcodec_decode_subtitle2   \
6208                   -Wl,--wrap,avcodec_encode_audio2      \
6209                   -Wl,--wrap,avcodec_encode_video2      \
6210                   -Wl,--wrap,avcodec_encode_subtitle    \
6211                   -Wl,--wrap,avcodec_send_packet        \
6212                   -Wl,--wrap,avcodec_receive_packet     \
6213                   -Wl,--wrap,avcodec_send_frame         \
6214                   -Wl,--wrap,avcodec_receive_frame      \
6215                   -Wl,--wrap,swr_convert                \
6216                   -Wl,--wrap,avresample_convert ||
6217     disable neon_clobber_test
6218
6219 enabled xmm_clobber_test &&
6220     check_ldflags -Wl,--wrap,avcodec_open2              \
6221                   -Wl,--wrap,avcodec_decode_audio4      \
6222                   -Wl,--wrap,avcodec_decode_video2      \
6223                   -Wl,--wrap,avcodec_decode_subtitle2   \
6224                   -Wl,--wrap,avcodec_encode_audio2      \
6225                   -Wl,--wrap,avcodec_encode_video2      \
6226                   -Wl,--wrap,avcodec_encode_subtitle    \
6227                   -Wl,--wrap,avcodec_send_packet        \
6228                   -Wl,--wrap,avcodec_receive_packet     \
6229                   -Wl,--wrap,avcodec_send_frame         \
6230                   -Wl,--wrap,avcodec_receive_frame      \
6231                   -Wl,--wrap,swr_convert                \
6232                   -Wl,--wrap,avresample_convert         \
6233                   -Wl,--wrap,sws_scale ||
6234     disable xmm_clobber_test
6235
6236 check_ld "cc" <<EOF && enable proper_dce
6237 extern const int array[512];
6238 static inline int func(void) { return array[0]; }
6239 int main(void) { return 0; }
6240 EOF
6241
6242 if enabled proper_dce; then
6243     echo "X { local: *; };" > $TMPV
6244     if test_ldflags -Wl,${version_script},$TMPV; then
6245         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6246         check_cc <<EOF && enable symver_asm_label
6247 void ff_foo(void) __asm__ ("av_foo@VERSION");
6248 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6249 EOF
6250         check_cc <<EOF && enable symver_gnu_asm
6251 __asm__(".symver ff_foo,av_foo@VERSION");
6252 void ff_foo(void) {}
6253 EOF
6254     fi
6255 fi
6256
6257 if [ -z "$optflags" ]; then
6258     if enabled small; then
6259         optflags=$cflags_size
6260     elif enabled optimizations; then
6261         optflags=$cflags_speed
6262     else
6263         optflags=$cflags_noopt
6264     fi
6265 fi
6266
6267 if [ -z "$nvccflags" ]; then
6268     nvccflags=$nvccflags_default
6269 fi
6270
6271 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6272     nvccflags="$nvccflags -m64"
6273 else
6274     nvccflags="$nvccflags -m32"
6275 fi
6276
6277 check_optflags(){
6278     check_cflags "$@"
6279     enabled lto && check_ldflags "$@"
6280 }
6281
6282 check_optflags $optflags
6283 check_optflags -fno-math-errno
6284 check_optflags -fno-signed-zeros
6285
6286 if enabled lto; then
6287     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6288     check_cflags  -flto
6289     check_ldflags -flto $cpuflags
6290     disable inline_asm_direct_symbol_refs
6291 fi
6292
6293 enabled ftrapv && check_cflags -ftrapv
6294
6295 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6296 int x;
6297 EOF
6298
6299
6300 if enabled icc; then
6301     # Just warnings, no remarks
6302     check_cflags -w1
6303     # -wd: Disable following warnings
6304     # 144, 167, 556: -Wno-pointer-sign
6305     # 188: enumerated type mixed with another type
6306     # 1292: attribute "foo" ignored
6307     # 1419: external declaration in primary source file
6308     # 10006: ignoring unknown option -fno-signed-zeros
6309     # 10148: ignoring unknown option -Wno-parentheses
6310     # 10156: ignoring option '-W'; no argument required
6311     # 13200: No EMMS instruction before call to function
6312     # 13203: No EMMS instruction before return from function
6313     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6314     # 11030: Warning unknown option --as-needed
6315     # 10156: ignoring option '-export'; no argument required
6316     check_ldflags -wd10156,11030
6317     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6318     enable ebp_available
6319     # The test above does not test linking
6320     enabled lto && disable symver_asm_label
6321     if enabled x86_32; then
6322         icc_version=$($cc -dumpversion)
6323         test ${icc_version%%.*} -ge 11 &&
6324             check_cflags -falign-stack=maintain-16-byte ||
6325             disable aligned_stack
6326     fi
6327 elif enabled ccc; then
6328     # disable some annoying warnings
6329     add_cflags -msg_disable bitnotint
6330     add_cflags -msg_disable mixfuncvoid
6331     add_cflags -msg_disable nonstandcast
6332     add_cflags -msg_disable unsupieee
6333 elif enabled gcc; then
6334     check_optflags -fno-tree-vectorize
6335     check_cflags -Werror=format-security
6336     check_cflags -Werror=implicit-function-declaration
6337     check_cflags -Werror=missing-prototypes
6338     check_cflags -Werror=return-type
6339     check_cflags -Werror=vla
6340     check_cflags -Wformat
6341     check_cflags -fdiagnostics-color=auto
6342     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6343 elif enabled llvm_gcc; then
6344     check_cflags -mllvm -stack-alignment=16
6345 elif enabled clang; then
6346     check_cflags -mllvm -stack-alignment=16
6347     check_cflags -mstack-alignment=16
6348     check_cflags -Qunused-arguments
6349     check_cflags -Werror=implicit-function-declaration
6350     check_cflags -Werror=missing-prototypes
6351     check_cflags -Werror=return-type
6352 elif enabled cparser; then
6353     add_cflags -Wno-missing-variable-declarations
6354     add_cflags -Wno-empty-statement
6355 elif enabled armcc; then
6356     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6357     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6358     # 2523: use of inline assembly is deprecated
6359     add_cflags -W${armcc_opt},--diag_suppress=2523
6360     add_cflags -W${armcc_opt},--diag_suppress=1207
6361     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6362     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6363     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6364     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6365 elif enabled tms470; then
6366     add_cflags -pds=824 -pds=837
6367     disable inline_asm
6368 elif enabled pathscale; then
6369     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6370 elif enabled_any msvc icl; then
6371     enabled x86_32 && disable aligned_stack
6372     enabled_all x86_32 debug && add_cflags -Oy-
6373     enabled debug && add_ldflags -debug
6374     enable pragma_deprecated
6375     if enabled icl; then
6376         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6377         # (correctly) on icl 13.x.
6378         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6379             add_cflags -Qansi-alias
6380         # Some inline asm is not compilable in debug
6381         if enabled debug; then
6382             disable ebp_available
6383             disable ebx_available
6384         fi
6385     fi
6386     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6387     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
6388     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6389     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6390     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6391     # MSVC 2013 and newer can handle it fine.
6392     # If this declspec fails, force including stdlib.h before the restrict redefinition
6393     # happens in config.h.
6394     if [ $_restrict != restrict ]; then
6395         check_cc <<EOF || add_cflags -FIstdlib.h
6396 __declspec($_restrict) void* foo(int);
6397 EOF
6398     fi
6399     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6400     # Issue has been fixed in MSVC v19.00.24218.
6401     check_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6402         check_cflags -d2SSAOptimizer-
6403     # enable utf-8 source processing on VS2015 U2 and newer
6404     check_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6405         add_cflags -utf-8
6406 fi
6407
6408 for pfx in "" host_; do
6409     varname=${pfx%_}cc_type
6410     eval "type=\$$varname"
6411     if [ "$type" = "msvc" ]; then
6412         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6413 static inline int foo(int a) { return a; }
6414 EOF
6415     fi
6416 done
6417
6418 case $as_type in
6419     clang)
6420         add_asflags -Qunused-arguments
6421     ;;
6422 esac
6423
6424 case $ld_type in
6425     clang)
6426         check_ldflags -Qunused-arguments
6427     ;;
6428 esac
6429
6430 case $target_os in
6431     osf1)
6432         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
6433     ;;
6434 esac
6435
6436 enable frame_thread_encoder
6437
6438 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6439
6440 check_deps $CONFIG_LIST       \
6441            $CONFIG_EXTRA      \
6442            $HAVE_LIST         \
6443            $ALL_COMPONENTS    \
6444
6445 enabled threads && ! enabled pthreads && ! enabled atomics_native && die "non pthread threading without atomics not supported, try adding --enable-pthreads or --cpu=i486 or higher if you are on x86"
6446
6447
6448 if test $target_os = "haiku"; then
6449     disable memalign
6450     disable posix_memalign
6451 fi
6452
6453 # add_dep lib dep
6454 # -> enable ${lib}_deps_${dep}
6455 # -> add $dep to ${lib}_deps only once
6456 add_dep() {
6457     lib=$1
6458     dep=$2
6459     enabled "${lib}_deps_${dep}" && return 0
6460     enable  "${lib}_deps_${dep}"
6461     prepend "${lib}_deps" $dep
6462 }
6463
6464 # merge deps lib components
6465 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
6466 merge_deps() {
6467     lib=$1
6468     shift
6469     for comp in $*; do
6470         enabled $comp || continue
6471         eval "dep=\"\$${comp}_deps\""
6472         for d in $dep; do
6473             add_dep $lib $d
6474         done
6475     done
6476 }
6477
6478 merge_deps libavfilter $FILTER_LIST
6479
6480 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6481
6482 for thread in $THREADS_LIST; do
6483     if enabled $thread; then
6484         test -n "$thread_type" &&
6485             die "ERROR: Only one thread type must be selected." ||
6486             thread_type="$thread"
6487     fi
6488 done
6489
6490 if disabled stdatomic_h; then
6491     if enabled atomics_gcc; then
6492         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6493     elif enabled atomics_win32; then
6494         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6495     elif enabled atomics_suncc; then
6496         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6497     elif enabled pthreads; then
6498         add_compat atomics/pthread/stdatomic.o
6499         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6500     else
6501         enabled threads && die "Threading is enabled, but no atomics are available"
6502         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6503     fi
6504 fi
6505
6506 # Check if requested libraries were found.
6507 for lib in $AUTODETECT_LIBS; do
6508     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6509 done
6510
6511 enabled zlib && add_cppflags -DZLIB_CONST
6512
6513 # conditional library dependencies, in linking order
6514 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6515 enabled afir_filter         && prepend avfilter_deps "avcodec"
6516 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6517 enabled aresample_filter    && prepend avfilter_deps "swresample"
6518 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6519 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6520 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6521 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6522 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6523 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6524 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
6525 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6526 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6527 enabled pan_filter          && prepend avfilter_deps "swresample"
6528 enabled pp_filter           && prepend avfilter_deps "postproc"
6529 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6530 enabled resample_filter && prepend avfilter_deps "avresample"
6531 enabled sab_filter          && prepend avfilter_deps "swscale"
6532 enabled scale_filter    && prepend avfilter_deps "swscale"
6533 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6534 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6535 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6536 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6537 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6538 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
6539 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6540 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6541 enabled spp_filter          && prepend avfilter_deps "avcodec"
6542 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6543 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6544 enabled zoompan_filter      && prepend avfilter_deps "swscale"
6545
6546 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6547
6548 enabled opus_decoder    && prepend avcodec_deps "swresample"
6549
6550 expand_deps(){
6551     lib_deps=${1}_deps
6552     eval "deps=\$$lib_deps"
6553     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6554     unique $lib_deps
6555 }
6556
6557 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6558 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6559
6560 map 'expand_deps $v' $LIBRARY_LIST
6561
6562 license="LGPL version 2.1 or later"
6563 if enabled nonfree; then
6564     license="nonfree and unredistributable"
6565 elif enabled gplv3; then
6566     license="GPL version 3 or later"
6567 elif enabled lgplv3; then
6568     license="LGPL version 3 or later"
6569 elif enabled gpl; then
6570     license="GPL version 2 or later"
6571 fi
6572
6573 if test "$quiet" != "yes"; then
6574
6575 echo "install prefix            $prefix"
6576 echo "source path               $source_path"
6577 echo "C compiler                $cc"
6578 echo "C library                 $libc_type"
6579 if test "$host_cc" != "$cc"; then
6580     echo "host C compiler           $host_cc"
6581     echo "host C library            $host_libc_type"
6582 fi
6583 echo "ARCH                      $arch ($cpu)"
6584 if test "$build_suffix" != ""; then
6585     echo "build suffix              $build_suffix"
6586 fi
6587 if test "$progs_suffix" != ""; then
6588     echo "progs suffix              $progs_suffix"
6589 fi
6590 if test "$extra_version" != ""; then
6591     echo "version string suffix     $extra_version"
6592 fi
6593 echo "big-endian                ${bigendian-no}"
6594 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6595 if enabled x86; then
6596     echo "${yasmexe}                      ${yasm-no}"
6597     echo "MMX enabled               ${mmx-no}"
6598     echo "MMXEXT enabled            ${mmxext-no}"
6599     echo "3DNow! enabled            ${amd3dnow-no}"
6600     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6601     echo "SSE enabled               ${sse-no}"
6602     echo "SSSE3 enabled             ${ssse3-no}"
6603     echo "AESNI enabled             ${aesni-no}"
6604     echo "AVX enabled               ${avx-no}"
6605     echo "XOP enabled               ${xop-no}"
6606     echo "FMA3 enabled              ${fma3-no}"
6607     echo "FMA4 enabled              ${fma4-no}"
6608     echo "i686 features enabled     ${i686-no}"
6609     echo "CMOV is fast              ${fast_cmov-no}"
6610     echo "EBX available             ${ebx_available-no}"
6611     echo "EBP available             ${ebp_available-no}"
6612 fi
6613 if enabled aarch64; then
6614     echo "NEON enabled              ${neon-no}"
6615     echo "VFP enabled               ${vfp-no}"
6616 fi
6617 if enabled arm; then
6618     echo "ARMv5TE enabled           ${armv5te-no}"
6619     echo "ARMv6 enabled             ${armv6-no}"
6620     echo "ARMv6T2 enabled           ${armv6t2-no}"
6621     echo "VFP enabled               ${vfp-no}"
6622     echo "NEON enabled              ${neon-no}"
6623     echo "THUMB enabled             ${thumb-no}"
6624 fi
6625 if enabled mips; then
6626     echo "MIPS FPU enabled          ${mipsfpu-no}"
6627     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6628     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6629     echo "MIPS MSA enabled          ${msa-no}"
6630     echo "LOONGSON MMI enabled      ${mmi-no}"
6631 fi
6632 if enabled ppc; then
6633     echo "AltiVec enabled           ${altivec-no}"
6634     echo "VSX enabled               ${vsx-no}"
6635     echo "POWER8 enabled            ${power8-no}"
6636     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6637     echo "dcbzl available           ${dcbzl-no}"
6638 fi
6639 echo "debug symbols             ${debug-no}"
6640 echo "strip symbols             ${stripping-no}"
6641 echo "optimize for size         ${small-no}"
6642 echo "optimizations             ${optimizations-no}"
6643 echo "static                    ${static-no}"
6644 echo "shared                    ${shared-no}"
6645 echo "postprocessing support    ${postproc-no}"
6646 echo "network support           ${network-no}"
6647 echo "threading support         ${thread_type-no}"
6648 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6649 echo "texi2html enabled         ${texi2html-no}"
6650 echo "perl enabled              ${perl-no}"
6651 echo "pod2man enabled           ${pod2man-no}"
6652 echo "makeinfo enabled          ${makeinfo-no}"
6653 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6654 test -n "$random_seed" &&
6655     echo "random seed               ${random_seed}"
6656 echo
6657
6658 echo "External libraries:"
6659 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_in_columns
6660 echo
6661
6662 echo "External libraries providing hardware acceleration:"
6663 print_enabled '' $HWACCEL_LIBRARY_LIST | print_in_columns
6664 echo
6665
6666 echo "Libraries:"
6667 print_enabled '' $LIBRARY_LIST | print_in_columns
6668 echo
6669
6670 echo "Programs:"
6671 print_enabled '' $PROGRAM_LIST | print_in_columns
6672 echo
6673
6674 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6675     echo "Enabled ${type}s:"
6676     eval list=\$$(toupper $type)_LIST
6677     print_enabled '_*' $list | print_in_columns
6678     echo
6679 done
6680
6681 if test -n "$ignore_tests"; then
6682     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
6683     echo "Ignored FATE tests:"
6684     echo $ignore_tests | print_in_columns
6685     echo
6686 fi
6687
6688 echo "License: $license"
6689
6690 echo "Creating configuration files ..."
6691
6692 fi # test "$quiet" != "yes"
6693
6694 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6695
6696 enabled stripping || strip="echo skipping strip"
6697
6698 config_files="$TMPH ffbuild/config.mak doc/config.texi"
6699
6700 if test "$target_os" != "android"; then
6701 cat > ffbuild/config.mak <<EOF
6702 # Automatically generated by configure - do not modify!
6703 ifndef FFMPEG_CONFIG_MAK
6704 FFMPEG_CONFIG_MAK=1
6705 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6706 prefix=$prefix
6707 LIBDIR=\$(DESTDIR)$libdir
6708 SHLIBDIR=\$(DESTDIR)$shlibdir
6709 INCDIR=\$(DESTDIR)$incdir
6710 BINDIR=\$(DESTDIR)$bindir
6711 DATADIR=\$(DESTDIR)$datadir
6712 DOCDIR=\$(DESTDIR)$docdir
6713 MANDIR=\$(DESTDIR)$mandir
6714 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6715 INSTALL_NAME_DIR=$install_name_dir
6716 SRC_PATH=$source_path
6717 SRC_LINK=$source_link
6718 ifndef MAIN_MAKEFILE
6719 SRC_PATH:=\$(SRC_PATH:.%=..%)
6720 endif
6721 CC_IDENT=$cc_ident
6722 ARCH=$arch
6723 INTRINSICS=$intrinsics
6724 CC=$cc
6725 CXX=$cxx
6726 AS=$as
6727 OBJCC=$objcc
6728 LD=$ld
6729 DEPCC=$dep_cc
6730 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6731 DEPAS=$as
6732 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6733 YASM=$yasmexe
6734 DEPYASM=$yasmexe
6735 AR=$ar
6736 ARFLAGS=$arflags
6737 AR_O=$ar_o
6738 RANLIB=$ranlib
6739 STRIP=$strip
6740 NVCC=$nvcc
6741 CP=cp -p
6742 LN_S=$ln_s
6743 CPPFLAGS=$CPPFLAGS
6744 CFLAGS=$CFLAGS
6745 CXXFLAGS=$CXXFLAGS
6746 OBJCFLAGS=$OBJCFLAGS
6747 ASFLAGS=$ASFLAGS
6748 NVCCFLAGS=$nvccflags
6749 AS_C=$AS_C
6750 AS_O=$AS_O
6751 OBJCC_C=$OBJCC_C
6752 OBJCC_E=$OBJCC_E
6753 OBJCC_O=$OBJCC_O
6754 CC_C=$CC_C
6755 CC_E=$CC_E
6756 CC_O=$CC_O
6757 CXX_C=$CXX_C
6758 CXX_O=$CXX_O
6759 NVCC_C=$NVCC_C
6760 NVCC_O=$NVCC_O
6761 LD_O=$LD_O
6762 LD_LIB=$LD_LIB
6763 LD_PATH=$LD_PATH
6764 DLLTOOL=$dlltool
6765 WINDRES=$windres
6766 DEPWINDRES=$dep_cc
6767 DOXYGEN=$doxygen
6768 LDFLAGS=$LDFLAGS
6769 LDEXEFLAGS=$LDEXEFLAGS
6770 LDLIBFLAGS=$LDLIBFLAGS
6771 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
6772 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
6773 YASMFLAGS=$YASMFLAGS
6774 BUILDSUF=$build_suffix
6775 PROGSSUF=$progs_suffix
6776 FULLNAME=$FULLNAME
6777 LIBPREF=$LIBPREF
6778 LIBSUF=$LIBSUF
6779 LIBNAME=$LIBNAME
6780 SLIBPREF=$SLIBPREF
6781 SLIBSUF=$SLIBSUF
6782 EXESUF=$EXESUF
6783 EXTRA_VERSION=$extra_version
6784 CCDEP=$CCDEP
6785 CXXDEP=$CXXDEP
6786 CCDEP_FLAGS=$CCDEP_FLAGS
6787 ASDEP=$ASDEP
6788 ASDEP_FLAGS=$ASDEP_FLAGS
6789 CC_DEPFLAGS=$CC_DEPFLAGS
6790 AS_DEPFLAGS=$AS_DEPFLAGS
6791 HOSTCC=$host_cc
6792 HOSTLD=$host_ld
6793 HOSTCFLAGS=$host_cflags
6794 HOSTCPPFLAGS=$host_cppflags
6795 HOSTEXESUF=$HOSTEXESUF
6796 HOSTLDFLAGS=$host_ldflags
6797 HOSTEXTRALIBS=$host_extralibs
6798 DEPHOSTCC=$host_cc
6799 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
6800 HOSTCCDEP=$HOSTCCDEP
6801 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
6802 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
6803 HOSTCC_C=$HOSTCC_C
6804 HOSTCC_O=$HOSTCC_O
6805 HOSTLD_O=$HOSTLD_O
6806 TARGET_EXEC=$target_exec $target_exec_args
6807 TARGET_PATH=$target_path
6808 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
6809 CFLAGS-ffplay=${sdl2_cflags}
6810 CFLAGS_HEADERS=$CFLAGS_HEADERS
6811 ZLIB=$($ldflags_filter -lz)
6812 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
6813 EXTRALIBS=$extralibs
6814 COMPAT_OBJS=$compat_objs
6815 INSTALL=$install
6816 LIBTARGET=${LIBTARGET}
6817 SLIBNAME=${SLIBNAME}
6818 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
6819 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
6820 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
6821 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
6822 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
6823 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
6824 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
6825 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
6826 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
6827 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
6828 NOREDZONE_FLAGS=$noredzone_flags
6829 LIBFUZZER_PATH=$libfuzzer_path
6830 IGNORE_TESTS=$ignore_tests
6831 EOF
6832 else
6833 echo "CONFIG_ANDROID=yes" > ffbuild/config.mak
6834 fi
6835
6836 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
6837
6838 print_program_extralibs(){
6839     eval "program_extralibs=\$${1}_extralibs"
6840     eval echo "EXTRALIBS-${1}=${program_extralibs}" >> ffbuild/config.mak
6841 }
6842
6843 map 'print_program_extralibs $v' $PROGRAM_LIST
6844
6845 cat > $TMPH <<EOF
6846 /* Automatically generated by configure - do not modify! */
6847 #ifndef FFMPEG_CONFIG_H
6848 #define FFMPEG_CONFIG_H
6849 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
6850 #define FFMPEG_LICENSE "$(c_escape $license)"
6851 #define CONFIG_THIS_YEAR 2017
6852 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
6853 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
6854 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
6855 #define av_restrict $_restrict
6856 #define EXTERN_PREFIX "${extern_prefix}"
6857 #define EXTERN_ASM ${extern_prefix}
6858 #define BUILDSUF "$build_suffix"
6859 #define SLIBSUF "$SLIBSUF"
6860 #define HAVE_MMX2 HAVE_MMXEXT
6861 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
6862 EOF
6863
6864 test -n "$assert_level" &&
6865     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
6866
6867 test -n "$malloc_prefix" &&
6868     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
6869
6870 if enabled yasm; then
6871     append config_files $TMPASM
6872     printf '' >$TMPASM
6873 fi
6874
6875 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
6876
6877
6878 mkdir -p doc
6879 mkdir -p tests
6880 mkdir -p tests/api
6881 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
6882
6883 print_config ARCH_   "$config_files" $ARCH_LIST
6884 print_config HAVE_   "$config_files" $HAVE_LIST
6885 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
6886                                      $CONFIG_EXTRA      \
6887                                      $ALL_COMPONENTS    \
6888
6889 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
6890 test "$target_os" != "android" && echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
6891
6892 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
6893 cp_if_changed $TMPH config.h
6894 touch ffbuild/.config
6895
6896 enabled yasm && cp_if_changed $TMPASM config.asm
6897
6898 cat > $TMPH <<EOF
6899 /* Generated by ffconf */
6900 #ifndef AVUTIL_AVCONFIG_H
6901 #define AVUTIL_AVCONFIG_H
6902 EOF
6903
6904 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
6905
6906 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
6907
6908 cp_if_changed $TMPH libavutil/avconfig.h
6909
6910 # generate the lists of enabled components
6911 print_enabled_components(){
6912     file=$1
6913     struct_name=$2
6914     name=$3
6915     shift 3
6916     echo "static const $struct_name *$name[] = {" > $TMPH
6917     for c in $*; do
6918         enabled $c && printf "    &ff_%s,\n" $c >> $TMPH
6919     done
6920     echo "    NULL };" >> $TMPH
6921     cp_if_changed $TMPH $file
6922 }
6923
6924 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
6925 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
6926
6927 if test -n "$WARNINGS"; then
6928     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
6929     enabled fatal_warnings && exit 1
6930 fi
6931
6932 # Settings for pkg-config files
6933
6934 cat > ffbuild/config.sh <<EOF
6935 # Automatically generated by configure - do not modify!
6936 shared=$shared
6937 build_suffix=$build_suffix
6938 prefix=$prefix
6939 libdir=$libdir
6940 incdir=$incdir
6941 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
6942 source_path=${source_path}
6943 LIBPREF=${LIBPREF}
6944 LIBSUF=${LIBSUF}
6945
6946 extralibs_avutil="$LIBRT $LIBM"
6947 extralibs_avcodec="$extralibs"
6948 extralibs_avformat="$extralibs"
6949 extralibs_avdevice="$extralibs"
6950 extralibs_avfilter="$extralibs"
6951 extralibs_avresample="$LIBM"
6952 extralibs_postproc=""
6953 extralibs_swscale="$LIBM"
6954 extralibs_swresample="$LIBM $LIBSOXR"
6955 EOF
6956
6957 for lib in $LIBRARY_LIST; do
6958     lib_deps="$(eval echo \$${lib}_deps)"
6959     echo ${lib}_deps=\"$lib_deps\" >> ffbuild/config.sh
6960 done