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_drm
2073     vaapi_x11
2074     vdpau_x11
2075     winrt
2076 "
2077
2078 # options emitted with CONFIG_ prefix but not available on the command line
2079 CONFIG_EXTRA="
2080     aandcttables
2081     ac3dsp
2082     audio_frame_queue
2083     audiodsp
2084     blockdsp
2085     bswapdsp
2086     cabac
2087     dirac_parse
2088     dvprofile
2089     exif
2090     faandct
2091     faanidct
2092     fdctdsp
2093     flacdsp
2094     fmtconvert
2095     frame_thread_encoder
2096     g722dsp
2097     golomb
2098     gplv3
2099     h263dsp
2100     h264chroma
2101     h264dsp
2102     h264parse
2103     h264pred
2104     h264qpel
2105     hevcparse
2106     hpeldsp
2107     huffman
2108     huffyuvdsp
2109     huffyuvencdsp
2110     idctdsp
2111     iirfilter
2112     mdct15
2113     intrax8
2114     iso_media
2115     ividsp
2116     jpegtables
2117     lgplv3
2118     libx262
2119     llauddsp
2120     llviddsp
2121     llvidencdsp
2122     lpc
2123     lzf
2124     me_cmp
2125     mpeg_er
2126     mpegaudio
2127     mpegaudiodsp
2128     mpegaudioheader
2129     mpegvideo
2130     mpegvideoenc
2131     mss34dsp
2132     pixblockdsp
2133     qpeldsp
2134     qsv
2135     qsvdec
2136     qsvenc
2137     rangecoder
2138     riffdec
2139     riffenc
2140     rtpdec
2141     rtpenc_chain
2142     rv34dsp
2143     sinewin
2144     snappy
2145     srtp
2146     startcode
2147     texturedsp
2148     texturedspenc
2149     tpeldsp
2150     vaapi_encode
2151     vc1dsp
2152     videodsp
2153     vp3dsp
2154     vp56dsp
2155     vp8dsp
2156     vt_bt2020
2157     wma_freqs
2158     wmv2dsp
2159 "
2160
2161 CMDLINE_SELECT="
2162     $ARCH_EXT_LIST
2163     $CONFIG_LIST
2164     $HAVE_LIST_CMDLINE
2165     $THREADS_LIST
2166     asm
2167     cross_compile
2168     debug
2169     extra_warnings
2170     logging
2171     lto
2172     optimizations
2173     rpath
2174     stripping
2175 "
2176
2177 PATHS_LIST="
2178     bindir
2179     datadir
2180     docdir
2181     incdir
2182     libdir
2183     mandir
2184     pkgconfigdir
2185     prefix
2186     shlibdir
2187     install_name_dir
2188 "
2189
2190 CMDLINE_SET="
2191     $PATHS_LIST
2192     ar
2193     arch
2194     as
2195     assert_level
2196     build_suffix
2197     cc
2198     objcc
2199     cpu
2200     cross_prefix
2201     custom_allocator
2202     cxx
2203     dep_cc
2204     doxygen
2205     env
2206     extra_version
2207     gas
2208     host_cc
2209     host_cflags
2210     host_extralibs
2211     host_ld
2212     host_ldflags
2213     host_os
2214     ignore_tests
2215     install
2216     ld
2217     ln_s
2218     logfile
2219     malloc_prefix
2220     nm
2221     optflags
2222     nvccflags
2223     pkg_config
2224     pkg_config_flags
2225     progs_suffix
2226     random_seed
2227     ranlib
2228     samples
2229     strip
2230     sws_max_filter_size
2231     sysinclude
2232     sysroot
2233     target_exec
2234     target_os
2235     target_path
2236     target_samples
2237     tempprefix
2238     toolchain
2239     valgrind
2240     yasmexe
2241 "
2242
2243 CMDLINE_APPEND="
2244     extra_cflags
2245     extra_cxxflags
2246     extra_objcflags
2247     host_cppflags
2248 "
2249
2250 # code dependency declarations
2251
2252 # architecture extensions
2253
2254 armv5te_deps="arm"
2255 armv6_deps="arm"
2256 armv6t2_deps="arm"
2257 armv8_deps="aarch64"
2258 neon_deps_any="aarch64 arm"
2259 intrinsics_neon_deps="neon"
2260 vfp_deps_any="aarch64 arm"
2261 vfpv3_deps="vfp"
2262 setend_deps="arm"
2263
2264 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2265
2266 loongson2_deps="mips"
2267 loongson3_deps="mips"
2268 mipsfpu_deps="mips"
2269 mipsdsp_deps="mips"
2270 mipsdspr2_deps="mips"
2271 mips32r2_deps="mips"
2272 mips32r5_deps="mips"
2273 mips32r6_deps="mips"
2274 mips64r2_deps="mips"
2275 mips64r6_deps="mips"
2276 msa_deps="mipsfpu"
2277 mmi_deps="mips"
2278
2279 altivec_deps="ppc"
2280 dcbzl_deps="ppc"
2281 ldbrx_deps="ppc"
2282 ppc4xx_deps="ppc"
2283 vsx_deps="altivec"
2284 power8_deps="vsx"
2285
2286 cpunop_deps="i686"
2287 x86_64_select="i686"
2288 x86_64_suggest="fast_cmov"
2289
2290 amd3dnow_deps="mmx"
2291 amd3dnowext_deps="amd3dnow"
2292 i686_deps="x86"
2293 mmx_deps="x86"
2294 mmxext_deps="mmx"
2295 sse_deps="mmxext"
2296 sse2_deps="sse"
2297 sse3_deps="sse2"
2298 ssse3_deps="sse3"
2299 sse4_deps="ssse3"
2300 sse42_deps="sse4"
2301 aesni_deps="sse42"
2302 avx_deps="sse42"
2303 xop_deps="avx"
2304 fma3_deps="avx"
2305 fma4_deps="avx"
2306 avx2_deps="avx"
2307
2308 mmx_external_deps="yasm"
2309 mmx_inline_deps="inline_asm"
2310 mmx_suggest="mmx_external mmx_inline"
2311
2312 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2313     eval dep=\$${ext}_deps
2314     eval ${ext}_external_deps='"${dep}_external"'
2315     eval ${ext}_inline_deps='"${dep}_inline"'
2316     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2317 done
2318
2319 aligned_stack_if_any="aarch64 ppc x86"
2320 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2321 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2322 fast_unaligned_if_any="aarch64 ppc x86"
2323 simd_align_16_if_any="altivec neon sse"
2324 simd_align_32_if_any="avx"
2325
2326 # system capabilities
2327 symver_if_any="symver_asm_label symver_gnu_asm"
2328 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
2329
2330 # threading support
2331 atomics_gcc_if="sync_val_compare_and_swap"
2332 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2333 atomics_win32_if="MemoryBarrier"
2334 atomics_native_if_any="$ATOMICS_LIST"
2335 w32threads_deps="atomics_native"
2336 threads_if_any="$THREADS_LIST"
2337
2338 # subsystems
2339 dct_select="rdft"
2340 dirac_parse_select="golomb"
2341 error_resilience_select="me_cmp"
2342 faandct_deps="faan fdctdsp"
2343 faanidct_deps="faan idctdsp"
2344 h264dsp_select="startcode"
2345 hevcparse_select="golomb"
2346 frame_thread_encoder_deps="encoders threads"
2347 intrax8_select="blockdsp idctdsp"
2348 mdct_select="fft"
2349 mdct15_select="fft"
2350 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2351 mpeg_er_select="error_resilience"
2352 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2353 mpegaudiodsp_select="dct"
2354 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2355 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2356 vc1dsp_select="h264chroma qpeldsp startcode"
2357 rdft_select="fft"
2358
2359 # decoders / encoders
2360 aac_decoder_select="mdct15 mdct sinewin"
2361 aac_fixed_decoder_select="mdct sinewin"
2362 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2363 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2364 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2365 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2366 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2367 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2368 adpcm_g722_decoder_select="g722dsp"
2369 adpcm_g722_encoder_select="g722dsp"
2370 aic_decoder_select="golomb idctdsp"
2371 alac_encoder_select="lpc"
2372 als_decoder_select="bswapdsp"
2373 amrnb_decoder_select="lsp"
2374 amrwb_decoder_select="lsp"
2375 amv_decoder_select="sp5x_decoder exif"
2376 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2377 ape_decoder_select="bswapdsp llauddsp"
2378 apng_decoder_select="zlib"
2379 apng_encoder_select="llvidencdsp zlib"
2380 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2381 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2382 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2383 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2384 atrac1_decoder_select="mdct sinewin"
2385 atrac3_decoder_select="mdct"
2386 atrac3p_decoder_select="mdct sinewin"
2387 avrn_decoder_select="exif jpegtables"
2388 bink_decoder_select="blockdsp hpeldsp"
2389 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2390 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2391 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2392 cllc_decoder_select="bswapdsp"
2393 comfortnoise_encoder_select="lpc"
2394 cook_decoder_select="audiodsp mdct sinewin"
2395 cscd_decoder_select="lzo"
2396 cscd_decoder_suggest="zlib"
2397 dca_decoder_select="mdct"
2398 dds_decoder_select="texturedsp"
2399 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2400 dnxhd_decoder_select="blockdsp idctdsp"
2401 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2402 dvvideo_decoder_select="dvprofile idctdsp"
2403 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2404 dxa_decoder_select="zlib"
2405 dxv_decoder_select="lzf texturedsp"
2406 eac3_decoder_select="ac3_decoder"
2407 eac3_encoder_select="ac3_encoder"
2408 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2409 eatgq_decoder_select="aandcttables"
2410 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2411 exr_decoder_select="zlib"
2412 ffv1_decoder_select="rangecoder"
2413 ffv1_encoder_select="rangecoder"
2414 ffvhuff_decoder_select="huffyuv_decoder"
2415 ffvhuff_encoder_select="huffyuv_encoder"
2416 fic_decoder_select="golomb"
2417 flac_decoder_select="flacdsp"
2418 flac_encoder_select="bswapdsp flacdsp lpc"
2419 flashsv2_decoder_select="zlib"
2420 flashsv2_encoder_select="zlib"
2421 flashsv_decoder_select="zlib"
2422 flashsv_encoder_select="zlib"
2423 flv_decoder_select="h263_decoder"
2424 flv_encoder_select="h263_encoder"
2425 fourxm_decoder_select="blockdsp bswapdsp"
2426 fraps_decoder_select="bswapdsp huffman"
2427 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2428 g729_decoder_select="audiodsp"
2429 h261_decoder_select="mpegvideo"
2430 h261_encoder_select="aandcttables mpegvideoenc"
2431 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2432 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2433 h263i_decoder_select="h263_decoder"
2434 h263p_decoder_select="h263_decoder"
2435 h263p_encoder_select="h263_encoder"
2436 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2437 h264_decoder_suggest="error_resilience"
2438 hap_decoder_select="snappy texturedsp"
2439 hap_encoder_deps="libsnappy"
2440 hap_encoder_select="texturedspenc"
2441 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2442 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2443 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2444 iac_decoder_select="imc_decoder"
2445 imc_decoder_select="bswapdsp fft mdct sinewin"
2446 indeo3_decoder_select="hpeldsp"
2447 indeo4_decoder_select="ividsp"
2448 indeo5_decoder_select="ividsp"
2449 interplay_video_decoder_select="hpeldsp"
2450 jpegls_decoder_select="mjpeg_decoder"
2451 jv_decoder_select="blockdsp"
2452 lagarith_decoder_select="llviddsp"
2453 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2454 magicyuv_decoder_select="llviddsp"
2455 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2456 metasound_decoder_select="lsp mdct sinewin"
2457 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2458 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2459 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2460 mjpegb_decoder_select="mjpeg_decoder"
2461 mlp_decoder_select="mlp_parser"
2462 mlp_encoder_select="lpc"
2463 motionpixels_decoder_select="bswapdsp"
2464 mp1_decoder_select="mpegaudio"
2465 mp1float_decoder_select="mpegaudio"
2466 mp2_decoder_select="mpegaudio"
2467 mp2float_decoder_select="mpegaudio"
2468 mp3_decoder_select="mpegaudio"
2469 mp3adu_decoder_select="mpegaudio"
2470 mp3adufloat_decoder_select="mpegaudio"
2471 mp3float_decoder_select="mpegaudio"
2472 mp3on4_decoder_select="mpegaudio"
2473 mp3on4float_decoder_select="mpegaudio"
2474 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2475 mpc8_decoder_select="mpegaudiodsp"
2476 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2477 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2478 mpegvideo_decoder_select="mpegvideo"
2479 mpeg1video_decoder_select="mpegvideo"
2480 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2481 mpeg2video_decoder_select="mpegvideo"
2482 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2483 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2484 mpeg4_encoder_select="h263_encoder"
2485 msa1_decoder_select="mss34dsp"
2486 mscc_decoder_select="zlib"
2487 msmpeg4v1_decoder_select="h263_decoder"
2488 msmpeg4v2_decoder_select="h263_decoder"
2489 msmpeg4v2_encoder_select="h263_encoder"
2490 msmpeg4v3_decoder_select="h263_decoder"
2491 msmpeg4v3_encoder_select="h263_encoder"
2492 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2493 mts2_decoder_select="mss34dsp"
2494 mxpeg_decoder_select="mjpeg_decoder"
2495 nellymoser_decoder_select="mdct sinewin"
2496 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2497 nuv_decoder_select="idctdsp lzo"
2498 on2avc_decoder_select="mdct"
2499 opus_decoder_deps="swresample"
2500 opus_decoder_select="mdct15"
2501 opus_encoder_select="audio_frame_queue mdct15"
2502 png_decoder_select="zlib"
2503 png_encoder_select="llvidencdsp zlib"
2504 prores_decoder_select="blockdsp idctdsp"
2505 prores_encoder_select="fdctdsp"
2506 qcelp_decoder_select="lsp"
2507 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2508 ra_144_decoder_select="audiodsp"
2509 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2510 ralf_decoder_select="golomb"
2511 rawvideo_decoder_select="bswapdsp"
2512 rscc_decoder_select="zlib"
2513 rtjpeg_decoder_select="me_cmp"
2514 rv10_decoder_select="h263_decoder"
2515 rv10_encoder_select="h263_encoder"
2516 rv20_decoder_select="h263_decoder"
2517 rv20_encoder_select="h263_encoder"
2518 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2519 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2520 screenpresso_decoder_select="zlib"
2521 shorten_decoder_select="bswapdsp"
2522 sipr_decoder_select="lsp"
2523 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2524 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2525 sonic_decoder_select="golomb rangecoder"
2526 sonic_encoder_select="golomb rangecoder"
2527 sonic_ls_encoder_select="golomb rangecoder"
2528 sp5x_decoder_select="mjpeg_decoder"
2529 srgc_decoder_select="zlib"
2530 svq1_decoder_select="hpeldsp"
2531 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2532 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2533 svq3_decoder_suggest="zlib"
2534 tak_decoder_select="audiodsp"
2535 tdsc_decoder_select="zlib mjpeg_decoder"
2536 theora_decoder_select="vp3_decoder"
2537 thp_decoder_select="mjpeg_decoder"
2538 tiff_decoder_suggest="zlib lzma"
2539 tiff_encoder_suggest="zlib"
2540 truehd_decoder_select="mlp_parser"
2541 truehd_encoder_select="lpc"
2542 truemotion2_decoder_select="bswapdsp"
2543 truespeech_decoder_select="bswapdsp"
2544 tscc_decoder_select="zlib"
2545 twinvq_decoder_select="mdct lsp sinewin"
2546 txd_decoder_select="texturedsp"
2547 utvideo_decoder_select="bswapdsp llviddsp"
2548 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2549 vble_decoder_select="llviddsp"
2550 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2551 vc1_qsv_decoder_deps="libmfx"
2552 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2553 vc1image_decoder_select="vc1_decoder"
2554 vorbis_decoder_select="mdct"
2555 vorbis_encoder_select="mdct"
2556 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2557 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2558 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2559 vp6a_decoder_select="vp6_decoder"
2560 vp6f_decoder_select="vp6_decoder"
2561 vp7_decoder_select="h264pred videodsp vp8dsp"
2562 vp8_decoder_select="h264pred videodsp vp8dsp"
2563 vp9_decoder_select="videodsp vp9_parser"
2564 webp_decoder_select="vp8_decoder exif"
2565 wmalossless_decoder_select="llauddsp"
2566 wmapro_decoder_select="mdct sinewin wma_freqs"
2567 wmav1_decoder_select="mdct sinewin wma_freqs"
2568 wmav1_encoder_select="mdct sinewin wma_freqs"
2569 wmav2_decoder_select="mdct sinewin wma_freqs"
2570 wmav2_encoder_select="mdct sinewin wma_freqs"
2571 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2572 wmv1_decoder_select="h263_decoder"
2573 wmv1_encoder_select="h263_encoder"
2574 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2575 wmv2_encoder_select="h263_encoder wmv2dsp"
2576 wmv3_decoder_select="vc1_decoder"
2577 wmv3image_decoder_select="wmv3_decoder"
2578 xma1_decoder_select="wmapro_decoder"
2579 xma2_decoder_select="wmapro_decoder"
2580 zerocodec_decoder_select="zlib"
2581 zlib_decoder_select="zlib"
2582 zlib_encoder_select="zlib"
2583 zmbv_decoder_select="zlib"
2584 zmbv_encoder_select="zlib"
2585
2586 # platform codecs
2587 audiotoolbox_deps="AudioToolbox_AudioToolbox_h"
2588 audiotoolbox_extralibs="-framework CoreFoundation -framework AudioToolbox -framework CoreMedia"
2589
2590 # hardware accelerators
2591 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2592 cuda_deps_any="dlopen LoadLibrary"
2593 cuvid_deps="cuda"
2594 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2595 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2596 dxva2_extralibs="-luser32"
2597 dxva2_lib_deps="dxva2"
2598 vda_framework_deps="VideoDecodeAcceleration_VDADecoder_h blocks_extension"
2599 vda_framework_extralibs="-framework VideoDecodeAcceleration"
2600 vda_deps="vda_framework pthreads"
2601 vda_extralibs="-framework CoreFoundation -framework QuartzCore"
2602 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2603 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2604 xvmc_deps="X11_extensions_XvMClib_h"
2605
2606 h263_vaapi_hwaccel_deps="vaapi"
2607 h263_vaapi_hwaccel_select="h263_decoder"
2608 h263_videotoolbox_hwaccel_deps="videotoolbox"
2609 h263_videotoolbox_hwaccel_select="h263_decoder"
2610 h264_cuvid_hwaccel_deps="cuda cuvid"
2611 h264_cuvid_hwaccel_select="h264_cuvid_decoder"
2612 h264_d3d11va_hwaccel_deps="d3d11va"
2613 h264_d3d11va_hwaccel_select="h264_decoder"
2614 h264_dxva2_hwaccel_deps="dxva2"
2615 h264_dxva2_hwaccel_select="h264_decoder"
2616 h264_mediacodec_hwaccel_deps="mediacodec"
2617 h264_mmal_hwaccel_deps="mmal"
2618 h264_qsv_hwaccel_deps="libmfx"
2619 h264_vaapi_hwaccel_deps="vaapi"
2620 h264_vaapi_hwaccel_select="h264_decoder"
2621 h264_vda_hwaccel_deps="vda"
2622 h264_vda_hwaccel_select="h264_decoder"
2623 h264_vda_old_hwaccel_deps="vda"
2624 h264_vda_old_hwaccel_select="h264_decoder"
2625 h264_vdpau_hwaccel_deps="vdpau"
2626 h264_vdpau_hwaccel_select="h264_decoder"
2627 h264_videotoolbox_hwaccel_deps="videotoolbox"
2628 h264_videotoolbox_hwaccel_select="h264_decoder"
2629 hevc_cuvid_hwaccel_deps="cuda cuvid"
2630 hevc_cuvid_hwaccel_select="hevc_cuvid_decoder"
2631 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2632 hevc_d3d11va_hwaccel_select="hevc_decoder"
2633 hevc_mediacodec_hwaccel_deps="mediacodec"
2634 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2635 hevc_dxva2_hwaccel_select="hevc_decoder"
2636 hevc_qsv_hwaccel_deps="libmfx"
2637 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2638 hevc_vaapi_hwaccel_select="hevc_decoder"
2639 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2640 hevc_vdpau_hwaccel_select="hevc_decoder"
2641 mjpeg_cuvid_hwaccel_deps="cuda cuvid"
2642 mjpeg_cuvid_hwaccel_select="mjpeg_cuvid_decoder"
2643 mpeg_xvmc_hwaccel_deps="xvmc"
2644 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2645 mpeg1_cuvid_hwaccel_deps="cuda cuvid"
2646 mpeg1_cuvid_hwaccel_select="mpeg1_cuvid_decoder"
2647 mpeg1_vdpau_hwaccel_deps="vdpau"
2648 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2649 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2650 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2651 mpeg1_xvmc_hwaccel_deps="xvmc"
2652 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2653 mpeg2_cuvid_hwaccel_deps="cuda cuvid"
2654 mpeg2_cuvid_hwaccel_select="mpeg2_cuvid_decoder"
2655 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2656 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2657 mpeg2_dxva2_hwaccel_deps="dxva2"
2658 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2659 mpeg2_mmal_hwaccel_deps="mmal"
2660 mpeg2_qsv_hwaccel_deps="libmfx"
2661 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2662 mpeg2_vaapi_hwaccel_deps="vaapi"
2663 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2664 mpeg2_vdpau_hwaccel_deps="vdpau"
2665 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2666 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2667 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2668 mpeg2_xvmc_hwaccel_deps="xvmc"
2669 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2670 mpeg4_cuvid_hwaccel_deps="cuda cuvid"
2671 mpeg4_cuvid_hwaccel_select="mpeg4_cuvid_decoder"
2672 mpeg4_mediacodec_hwaccel_deps="mediacodec"
2673 mpeg4_mmal_hwaccel_deps="mmal"
2674 mpeg4_vaapi_hwaccel_deps="vaapi"
2675 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2676 mpeg4_vdpau_hwaccel_deps="vdpau"
2677 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2678 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2679 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2680 vc1_cuvid_hwaccel_deps="cuda cuvid"
2681 vc1_cuvid_hwaccel_select="vc1_cuvid_decoder"
2682 vc1_d3d11va_hwaccel_deps="d3d11va"
2683 vc1_d3d11va_hwaccel_select="vc1_decoder"
2684 vc1_dxva2_hwaccel_deps="dxva2"
2685 vc1_dxva2_hwaccel_select="vc1_decoder"
2686 vc1_mmal_hwaccel_deps="mmal"
2687 vc1_qsv_hwaccel_deps="libmfx"
2688 vc1_qsv_hwaccel_select="qsvdec_vc1"
2689 vc1_vaapi_hwaccel_deps="vaapi"
2690 vc1_vaapi_hwaccel_select="vc1_decoder"
2691 vc1_vdpau_hwaccel_deps="vdpau"
2692 vc1_vdpau_hwaccel_select="vc1_decoder"
2693 vp8_cuvid_hwaccel_deps="cuda cuvid"
2694 vp8_cuvid_hwaccel_select="vp8_cuvid_decoder"
2695 vp9_cuvid_hwaccel_deps="cuda cuvid"
2696 vp9_cuvid_hwaccel_select="vp9_cuvid_decoder"
2697 vp8_mediacodec_hwaccel_deps="mediacodec"
2698 vp8_qsv_hwaccel_deps="libmfx"
2699 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2700 vp9_d3d11va_hwaccel_select="vp9_decoder"
2701 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2702 vp9_dxva2_hwaccel_select="vp9_decoder"
2703 vp9_mediacodec_hwaccel_deps="mediacodec"
2704 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2705 vp9_vaapi_hwaccel_select="vp9_decoder"
2706 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2707 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2708 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2709 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2710
2711 # hardware-accelerated codecs
2712 omx_deps="dlopen pthreads"
2713 omx_extralibs='$ldl'
2714 omx_rpi_select="omx"
2715 qsvdec_select="qsv"
2716 qsvenc_select="qsv"
2717 vaapi_encode_deps="vaapi"
2718
2719 hwupload_cuda_filter_deps="cuda"
2720 scale_npp_filter_deps="cuda libnpp"
2721 scale_cuda_filter_deps="cuda_sdk"
2722
2723 nvenc_deps="cuda"
2724 nvenc_deps_any="dlopen LoadLibrary"
2725 nvenc_encoder_deps="nvenc"
2726
2727 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2728 h264_cuvid_decoder_deps="cuda cuvid"
2729 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2730 h264_mediacodec_decoder_deps="mediacodec"
2731 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2732 h264_mmal_decoder_deps="mmal"
2733 h264_nvenc_encoder_deps="nvenc"
2734 h264_omx_encoder_deps="omx"
2735 h264_qsv_decoder_deps="libmfx"
2736 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2737 h264_qsv_encoder_deps="libmfx"
2738 h264_qsv_encoder_select="qsvenc"
2739 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2740 h264_vaapi_encoder_select="vaapi_encode golomb"
2741 h264_vda_decoder_deps="vda"
2742 h264_vda_decoder_select="h264_decoder"
2743 h264_vdpau_decoder_deps="vdpau"
2744 h264_vdpau_decoder_select="h264_decoder"
2745 hevc_cuvid_decoder_deps="cuda cuvid"
2746 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2747 hevc_mediacodec_decoder_deps="mediacodec"
2748 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2749 hevc_nvenc_encoder_deps="nvenc"
2750 hevc_qsv_decoder_deps="libmfx"
2751 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2752 hevc_qsv_encoder_deps="libmfx"
2753 hevc_qsv_encoder_select="hevcparse qsvenc"
2754 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2755 hevc_vaapi_encoder_select="vaapi_encode golomb"
2756 mjpeg_cuvid_decoder_deps="cuda cuvid"
2757 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2758 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2759 mpeg1_cuvid_decoder_deps="cuda cuvid"
2760 mpeg1_vdpau_decoder_deps="vdpau"
2761 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2762 mpeg2_crystalhd_decoder_select="crystalhd"
2763 mpeg2_cuvid_decoder_deps="cuda cuvid"
2764 mpeg2_mmal_decoder_deps="mmal"
2765 mpeg2_qsv_decoder_deps="libmfx"
2766 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2767 mpeg2_qsv_encoder_deps="libmfx"
2768 mpeg2_qsv_encoder_select="qsvenc"
2769 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2770 mpeg2_vaapi_encoder_select="vaapi_encode"
2771 mpeg4_crystalhd_decoder_select="crystalhd"
2772 mpeg4_cuvid_decoder_deps="cuda cuvid"
2773 mpeg4_mediacodec_decoder_deps="mediacodec"
2774 mpeg4_mmal_decoder_deps="mmal"
2775 mpeg4_omx_encoder_deps="omx"
2776 mpeg4_vdpau_decoder_deps="vdpau"
2777 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2778 mpeg_vdpau_decoder_deps="vdpau"
2779 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2780 msmpeg4_crystalhd_decoder_select="crystalhd"
2781 nvenc_h264_encoder_select="h264_nvenc_encoder"
2782 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2783 vc1_crystalhd_decoder_select="crystalhd"
2784 vc1_cuvid_decoder_deps="cuda cuvid"
2785 vc1_mmal_decoder_deps="mmal"
2786 vc1_vdpau_decoder_deps="vdpau"
2787 vc1_vdpau_decoder_select="vc1_decoder"
2788 vp8_cuvid_decoder_deps="cuda cuvid"
2789 vp8_mediacodec_decoder_deps="mediacodec"
2790 vp8_qsv_decoder_deps="libmfx"
2791 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2792 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2793 vp8_vaapi_encoder_select="vaapi_encode"
2794 vp9_cuvid_decoder_deps="cuda cuvid"
2795 vp9_mediacodec_decoder_deps="mediacodec"
2796 wmv3_crystalhd_decoder_select="crystalhd"
2797 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2798
2799 # parsers
2800 h264_parser_select="golomb h264dsp h264parse"
2801 hevc_parser_select="hevcparse"
2802 mpegaudio_parser_select="mpegaudioheader"
2803 mpegvideo_parser_select="mpegvideo"
2804 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2805 vc1_parser_select="vc1dsp"
2806
2807 # bitstream_filters
2808 mjpeg2jpeg_bsf_select="jpegtables"
2809
2810 # external libraries
2811 aac_at_decoder_deps="audiotoolbox"
2812 ac3_at_decoder_deps="audiotoolbox"
2813 ac3_at_decoder_select="ac3_parser"
2814 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2815 alac_at_decoder_deps="audiotoolbox"
2816 amr_nb_at_decoder_deps="audiotoolbox"
2817 avisynth_deps_any="dlopen LoadLibrary"
2818 avisynth_demuxer_deps="avisynth"
2819 avisynth_demuxer_select="riffdec"
2820 eac3_at_decoder_deps="audiotoolbox"
2821 eac3_at_decoder_select="ac3_parser"
2822 gsm_ms_at_decoder_deps="audiotoolbox"
2823 ilbc_at_decoder_deps="audiotoolbox"
2824 mp1_at_decoder_deps="audiotoolbox"
2825 mp2_at_decoder_deps="audiotoolbox"
2826 mp3_at_decoder_deps="audiotoolbox"
2827 mp1_at_decoder_select="mpegaudioheader"
2828 mp2_at_decoder_select="mpegaudioheader"
2829 mp3_at_decoder_select="mpegaudioheader"
2830 pcm_alaw_at_decoder_deps="audiotoolbox"
2831 pcm_mulaw_at_decoder_deps="audiotoolbox"
2832 qdmc_at_decoder_deps="audiotoolbox"
2833 qdm2_at_decoder_deps="audiotoolbox"
2834 aac_at_encoder_deps="audiotoolbox"
2835 aac_at_encoder_select="audio_frame_queue"
2836 alac_at_encoder_deps="audiotoolbox"
2837 alac_at_encoder_select="audio_frame_queue"
2838 ilbc_at_encoder_deps="audiotoolbox"
2839 ilbc_at_encoder_select="audio_frame_queue"
2840 pcm_alaw_at_encoder_deps="audiotoolbox"
2841 pcm_alaw_at_encoder_select="audio_frame_queue"
2842 pcm_mulaw_at_encoder_deps="audiotoolbox"
2843 pcm_mulaw_at_encoder_select="audio_frame_queue"
2844 chromaprint_muxer_deps="chromaprint"
2845 h264_videotoolbox_encoder_deps="videotoolbox_encoder pthreads"
2846 libcelt_decoder_deps="libcelt"
2847 libfdk_aac_decoder_deps="libfdk_aac"
2848 libfdk_aac_encoder_deps="libfdk_aac"
2849 libfdk_aac_encoder_select="audio_frame_queue"
2850 libgme_demuxer_deps="libgme"
2851 libgsm_decoder_deps="libgsm"
2852 libgsm_encoder_deps="libgsm"
2853 libgsm_ms_decoder_deps="libgsm"
2854 libgsm_ms_encoder_deps="libgsm"
2855 libilbc_decoder_deps="libilbc"
2856 libilbc_encoder_deps="libilbc"
2857 libkvazaar_encoder_deps="libkvazaar"
2858 libmodplug_demuxer_deps="libmodplug"
2859 libmp3lame_encoder_deps="libmp3lame"
2860 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2861 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2862 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2863 libopencore_amrnb_encoder_select="audio_frame_queue"
2864 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2865 libopenh264_decoder_deps="libopenh264"
2866 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2867 libopenh264_encoder_deps="libopenh264"
2868 libopenjpeg_decoder_deps="libopenjpeg"
2869 libopenjpeg_encoder_deps="libopenjpeg"
2870 libopenmpt_demuxer_deps="libopenmpt"
2871 libopus_decoder_deps="libopus"
2872 libopus_encoder_deps="libopus"
2873 libopus_encoder_select="audio_frame_queue"
2874 librsvg_decoder_deps="librsvg"
2875 libshine_encoder_deps="libshine"
2876 libshine_encoder_select="audio_frame_queue"
2877 libspeex_decoder_deps="libspeex"
2878 libspeex_encoder_deps="libspeex"
2879 libspeex_encoder_select="audio_frame_queue"
2880 libtheora_encoder_deps="libtheora"
2881 libtwolame_encoder_deps="libtwolame"
2882 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2883 libvorbis_decoder_deps="libvorbis"
2884 libvorbis_encoder_deps="libvorbis"
2885 libvorbis_encoder_select="audio_frame_queue"
2886 libvpx_vp8_decoder_deps="libvpx"
2887 libvpx_vp8_encoder_deps="libvpx"
2888 libvpx_vp9_decoder_deps="libvpx"
2889 libvpx_vp9_encoder_deps="libvpx"
2890 libwavpack_encoder_deps="libwavpack"
2891 libwavpack_encoder_select="audio_frame_queue"
2892 libwebp_encoder_deps="libwebp"
2893 libwebp_anim_encoder_deps="libwebp"
2894 libx262_encoder_deps="libx262"
2895 libx264_encoder_deps="libx264"
2896 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2897 libx264rgb_encoder_select="libx264_encoder"
2898 libx265_encoder_deps="libx265"
2899 libxavs_encoder_deps="libxavs"
2900 libxvid_encoder_deps="libxvid"
2901 libzvbi_teletext_decoder_deps="libzvbi"
2902 videotoolbox_deps="VideoToolbox_VideoToolbox_h"
2903 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework CoreVideo"
2904 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2905 videotoolbox_encoder_suggest="vda_framework vt_bt2020"
2906 vt_bt2020_deps="kCVImageBufferColorPrimaries_ITU_R_2020"
2907
2908 # demuxers / muxers
2909 ac3_demuxer_select="ac3_parser"
2910 aiff_muxer_select="iso_media"
2911 asf_demuxer_select="riffdec"
2912 asf_o_demuxer_select="riffdec"
2913 asf_muxer_select="riffenc"
2914 asf_stream_muxer_select="asf_muxer"
2915 avi_demuxer_select="iso_media riffdec exif"
2916 avi_muxer_select="riffenc"
2917 caf_demuxer_select="iso_media riffdec"
2918 caf_muxer_select="iso_media"
2919 dash_muxer_select="mp4_muxer"
2920 dirac_demuxer_select="dirac_parser"
2921 dts_demuxer_select="dca_parser"
2922 dtshd_demuxer_select="dca_parser"
2923 dv_demuxer_select="dvprofile"
2924 dv_muxer_select="dvprofile"
2925 dxa_demuxer_select="riffdec"
2926 eac3_demuxer_select="ac3_parser"
2927 f4v_muxer_select="mov_muxer"
2928 fifo_muxer_deps="threads"
2929 flac_demuxer_select="flac_parser"
2930 hds_muxer_select="flv_muxer"
2931 hls_muxer_select="mpegts_muxer"
2932 image2_alias_pix_demuxer_select="image2_demuxer"
2933 image2_brender_pix_demuxer_select="image2_demuxer"
2934 ipod_muxer_select="mov_muxer"
2935 ismv_muxer_select="mov_muxer"
2936 matroska_audio_muxer_select="matroska_muxer"
2937 matroska_demuxer_select="iso_media riffdec"
2938 matroska_demuxer_suggest="bzlib lzo zlib"
2939 matroska_muxer_select="iso_media riffenc"
2940 mmf_muxer_select="riffenc"
2941 mov_demuxer_select="iso_media riffdec"
2942 mov_demuxer_suggest="zlib"
2943 mov_muxer_select="iso_media riffenc rtpenc_chain"
2944 mp3_demuxer_select="mpegaudio_parser"
2945 mp3_muxer_select="mpegaudioheader"
2946 mp4_muxer_select="mov_muxer"
2947 mpegts_demuxer_select="iso_media"
2948 mpegts_muxer_select="adts_muxer latm_muxer"
2949 mpegtsraw_demuxer_select="mpegts_demuxer"
2950 mxf_d10_muxer_select="mxf_muxer"
2951 mxf_opatom_muxer_select="mxf_muxer"
2952 nut_muxer_select="riffenc"
2953 nuv_demuxer_select="riffdec"
2954 oga_muxer_select="ogg_muxer"
2955 ogg_demuxer_select="dirac_parse"
2956 ogv_muxer_select="ogg_muxer"
2957 opus_muxer_select="ogg_muxer"
2958 psp_muxer_select="mov_muxer"
2959 rtp_demuxer_select="sdp_demuxer"
2960 rtp_muxer_select="golomb"
2961 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2962 rtsp_demuxer_select="http_protocol rtpdec"
2963 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2964 sap_demuxer_select="sdp_demuxer"
2965 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2966 sdp_demuxer_select="rtpdec"
2967 smoothstreaming_muxer_select="ismv_muxer"
2968 spdif_muxer_select="aac_parser"
2969 spx_muxer_select="ogg_muxer"
2970 swf_demuxer_suggest="zlib"
2971 tak_demuxer_select="tak_parser"
2972 tg2_muxer_select="mov_muxer"
2973 tgp_muxer_select="mov_muxer"
2974 vobsub_demuxer_select="mpegps_demuxer"
2975 w64_demuxer_select="wav_demuxer"
2976 w64_muxer_select="wav_muxer"
2977 wav_demuxer_select="riffdec"
2978 wav_muxer_select="riffenc"
2979 webm_muxer_select="iso_media riffenc"
2980 webm_dash_manifest_demuxer_select="matroska_demuxer"
2981 wtv_demuxer_select="mpegts_demuxer riffdec"
2982 wtv_muxer_select="mpegts_muxer riffenc"
2983 xmv_demuxer_select="riffdec"
2984 xwma_demuxer_select="riffdec"
2985
2986 # indevs / outdevs
2987 alsa_indev_deps="alsa"
2988 alsa_outdev_deps="alsa"
2989 avfoundation_indev_deps="pthreads"
2990 avfoundation_indev_extralibs="-framework Foundation -framework AVFoundation -framework CoreVideo -framework CoreMedia"
2991 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2992 caca_outdev_deps="libcaca"
2993 decklink_indev_deps="decklink threads"
2994 decklink_indev_extralibs="-lstdc++"
2995 decklink_outdev_deps="decklink threads"
2996 decklink_outdev_extralibs="-lstdc++"
2997 dshow_indev_deps="IBaseFilter"
2998 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
2999 dv1394_indev_deps="dv1394"
3000 dv1394_indev_select="dv_demuxer"
3001 fbdev_indev_deps="linux_fb_h"
3002 fbdev_outdev_deps="linux_fb_h"
3003 gdigrab_indev_deps="CreateDIBSection"
3004 gdigrab_indev_extralibs="-lgdi32"
3005 gdigrab_indev_select="bmp_decoder"
3006 iec61883_indev_deps="libiec61883"
3007 jack_indev_deps="jack"
3008 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3009 lavfi_indev_deps="avfilter"
3010 libcdio_indev_deps="libcdio"
3011 libdc1394_indev_deps="libdc1394"
3012 libv4l2_indev_deps="libv4l2"
3013 openal_indev_deps="openal"
3014 opengl_outdev_deps="opengl"
3015 oss_indev_deps_any="soundcard_h sys_soundcard_h"
3016 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
3017 pulse_indev_deps="libpulse"
3018 pulse_outdev_deps="libpulse"
3019 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
3020 qtkit_indev_select="qtkit"
3021 sdl2_outdev_deps="sdl2"
3022 sndio_indev_deps="sndio"
3023 sndio_outdev_deps="sndio"
3024 v4l_indev_deps="linux_videodev_h"
3025 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3026 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3027 vfwcap_indev_deps="vfw32 vfwcap_defines"
3028 xcbgrab_indev_deps="libxcb"
3029 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3030 xv_outdev_extralibs="-lXv -lX11 -lXext"
3031
3032 # protocols
3033 async_protocol_deps="threads"
3034 bluray_protocol_deps="libbluray"
3035 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
3036 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3037 ffrtmpcrypt_protocol_select="tcp_protocol"
3038 ffrtmphttp_protocol_deps="!librtmp_protocol"
3039 ffrtmphttp_protocol_select="http_protocol"
3040 ftp_protocol_select="tcp_protocol"
3041 gopher_protocol_select="network"
3042 http_protocol_select="tcp_protocol"
3043 httpproxy_protocol_select="tcp_protocol"
3044 https_protocol_select="tls_protocol"
3045 icecast_protocol_select="http_protocol"
3046 librtmp_protocol_deps="librtmp"
3047 librtmpe_protocol_deps="librtmp"
3048 librtmps_protocol_deps="librtmp"
3049 librtmpt_protocol_deps="librtmp"
3050 librtmpte_protocol_deps="librtmp"
3051 libsmbclient_protocol_deps="libsmbclient gplv3"
3052 libssh_protocol_deps="libssh"
3053 mmsh_protocol_select="http_protocol"
3054 mmst_protocol_select="network"
3055 rtmp_protocol_deps="!librtmp_protocol"
3056 rtmp_protocol_select="tcp_protocol"
3057 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3058 rtmps_protocol_deps="!librtmp_protocol"
3059 rtmps_protocol_select="tls_protocol"
3060 rtmpt_protocol_select="ffrtmphttp_protocol"
3061 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3062 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3063 rtp_protocol_select="udp_protocol"
3064 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3065 sctp_protocol_select="network"
3066 srtp_protocol_select="rtp_protocol srtp"
3067 tcp_protocol_select="network"
3068 tls_gnutls_protocol_deps="gnutls !tls_schannel_protocol !tls_securetransport_protocol"
3069 tls_gnutls_protocol_select="tcp_protocol"
3070 tls_openssl_protocol_deps="openssl !tls_schannel_protocol !tls_securetransport_protocol !tls_gnutls_protocol"
3071 tls_openssl_protocol_select="tcp_protocol"
3072 tls_schannel_protocol_deps="schannel"
3073 tls_schannel_protocol_select="tcp_protocol"
3074 tls_securetransport_protocol_deps="securetransport"
3075 tls_securetransport_protocol_select="tcp_protocol"
3076 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
3077 udp_protocol_select="network"
3078 udplite_protocol_select="network"
3079 unix_protocol_deps="sys_un_h"
3080 unix_protocol_select="network"
3081
3082 # filters
3083 afftfilt_filter_deps="avcodec"
3084 afftfilt_filter_select="fft"
3085 afir_filter_deps="avcodec"
3086 afir_filter_select="fft"
3087 amovie_filter_deps="avcodec avformat"
3088 aresample_filter_deps="swresample"
3089 ass_filter_deps="libass"
3090 atempo_filter_deps="avcodec"
3091 atempo_filter_select="rdft"
3092 azmq_filter_deps="libzmq"
3093 blackframe_filter_deps="gpl"
3094 boxblur_filter_deps="gpl"
3095 bs2b_filter_deps="libbs2b"
3096 colormatrix_filter_deps="gpl"
3097 cover_rect_filter_deps="avcodec avformat gpl"
3098 cropdetect_filter_deps="gpl"
3099 deinterlace_qsv_filter_deps="libmfx"
3100 deinterlace_vaapi_filter_deps="vaapi"
3101 delogo_filter_deps="gpl"
3102 deshake_filter_select="pixelutils"
3103 drawtext_filter_deps="libfreetype"
3104 elbg_filter_deps="avcodec"
3105 eq_filter_deps="gpl"
3106 fftfilt_filter_deps="avcodec"
3107 fftfilt_filter_select="rdft"
3108 find_rect_filter_deps="avcodec avformat gpl"
3109 firequalizer_filter_deps="avcodec"
3110 firequalizer_filter_select="rdft"
3111 flite_filter_deps="libflite"
3112 framerate_filter_select="pixelutils"
3113 frei0r_filter_deps="frei0r dlopen"
3114 frei0r_src_filter_deps="frei0r dlopen"
3115 fspp_filter_deps="gpl"
3116 geq_filter_deps="gpl"
3117 histeq_filter_deps="gpl"
3118 hqdn3d_filter_deps="gpl"
3119 interlace_filter_deps="gpl"
3120 kerndeint_filter_deps="gpl"
3121 ladspa_filter_deps="ladspa dlopen"
3122 mcdeint_filter_deps="avcodec gpl"
3123 movie_filter_deps="avcodec avformat"
3124 mpdecimate_filter_deps="gpl"
3125 mpdecimate_filter_select="pixelutils"
3126 mptestsrc_filter_deps="gpl"
3127 negate_filter_deps="lut_filter"
3128 nnedi_filter_deps="gpl"
3129 ocr_filter_deps="libtesseract"
3130 ocv_filter_deps="libopencv"
3131 owdenoise_filter_deps="gpl"
3132 pan_filter_deps="swresample"
3133 perspective_filter_deps="gpl"
3134 phase_filter_deps="gpl"
3135 pp7_filter_deps="gpl"
3136 pp_filter_deps="gpl postproc"
3137 pullup_filter_deps="gpl"
3138 removelogo_filter_deps="avcodec avformat swscale"
3139 repeatfields_filter_deps="gpl"
3140 resample_filter_deps="avresample"
3141 rubberband_filter_deps="librubberband"
3142 sab_filter_deps="gpl swscale"
3143 scale2ref_filter_deps="swscale"
3144 scale_filter_deps="swscale"
3145 scale_qsv_filter_deps="libmfx"
3146 select_filter_select="pixelutils"
3147 showcqt_filter_deps="avcodec avformat swscale"
3148 showcqt_filter_select="fft"
3149 showfreqs_filter_deps="avcodec"
3150 showfreqs_filter_select="fft"
3151 showspectrum_filter_deps="avcodec"
3152 showspectrum_filter_select="fft"
3153 showspectrumpic_filter_deps="avcodec"
3154 showspectrumpic_filter_select="fft"
3155 signature_filter_deps="gpl avcodec avformat"
3156 smartblur_filter_deps="gpl swscale"
3157 sofalizer_filter_deps="netcdf avcodec"
3158 sofalizer_filter_select="fft"
3159 spectrumsynth_filter_deps="avcodec"
3160 spectrumsynth_filter_select="fft"
3161 spp_filter_deps="gpl avcodec"
3162 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3163 stereo3d_filter_deps="gpl"
3164 subtitles_filter_deps="avformat avcodec libass"
3165 super2xsai_filter_deps="gpl"
3166 pixfmts_super2xsai_test_deps="super2xsai_filter"
3167 tinterlace_filter_deps="gpl"
3168 tinterlace_merge_test_deps="tinterlace_filter"
3169 tinterlace_pad_test_deps="tinterlace_filter"
3170 uspp_filter_deps="gpl avcodec"
3171 vaguedenoiser_filter_deps="gpl"
3172 vidstabdetect_filter_deps="libvidstab"
3173 vidstabtransform_filter_deps="libvidstab"
3174 zmq_filter_deps="libzmq"
3175 zoompan_filter_deps="swscale"
3176 zscale_filter_deps="libzimg"
3177 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3178
3179 # examples
3180 avio_dir_cmd_deps="avformat avutil"
3181 avio_reading_deps="avformat avcodec avutil"
3182 decode_audio_example_deps="avcodec avutil"
3183 decode_video_example_deps="avcodec avutil"
3184 demuxing_decoding_example_deps="avcodec avformat avutil"
3185 encode_audio_example_deps="avcodec avutil"
3186 encode_video_example_deps="avcodec avutil"
3187 extract_mvs_example_deps="avcodec avformat avutil"
3188 filter_audio_example_deps="avfilter avutil"
3189 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3190 filtering_video_example_deps="avfilter avcodec avformat avutil"
3191 http_multiclient_example_deps="avformat avutil fork"
3192 metadata_example_deps="avformat avutil"
3193 muxing_example_deps="avcodec avformat avutil swscale"
3194 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3195 remuxing_example_deps="avcodec avformat avutil"
3196 resampling_audio_example_deps="avutil swresample"
3197 scaling_video_example_deps="avutil swscale"
3198 transcode_aac_example_deps="avcodec avformat swresample"
3199 transcoding_example_deps="avfilter avcodec avformat avutil"
3200
3201 # libraries, in linking order
3202 avcodec_deps="avutil"
3203 avcodec_select="null_bsf"
3204 avdevice_deps="avformat avcodec avutil"
3205 avfilter_deps="avutil"
3206 avformat_deps="avcodec avutil"
3207 avresample_deps="avutil"
3208 postproc_deps="avutil gpl"
3209 swresample_deps="avutil"
3210 swscale_deps="avutil"
3211
3212 # programs
3213 ffmpeg_deps="avcodec avfilter avformat swresample"
3214 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3215                null_filter
3216                trim_filter"
3217 ffplay_deps="avcodec avformat swscale swresample sdl2"
3218 ffplay_extralibs='$sdl2_extralibs'
3219 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3220 ffprobe_deps="avcodec avformat"
3221 ffserver_deps="avformat fork sarestart"
3222 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3223
3224 # documentation
3225 podpages_deps="perl"
3226 manpages_deps="perl pod2man"
3227 htmlpages_deps="perl"
3228 htmlpages_deps_any="makeinfo_html texi2html"
3229 txtpages_deps="perl makeinfo"
3230 doc_deps_any="manpages htmlpages podpages txtpages"
3231
3232 # default parameters
3233
3234 logfile="ffbuild/config.log"
3235
3236 # installation paths
3237 prefix_default="/usr/local"
3238 bindir_default='${prefix}/bin'
3239 datadir_default='${prefix}/share/ffmpeg'
3240 docdir_default='${prefix}/share/doc/ffmpeg'
3241 incdir_default='${prefix}/include'
3242 libdir_default='${prefix}/lib'
3243 mandir_default='${prefix}/share/man'
3244
3245 # toolchain
3246 ar_default="ar"
3247 cc_default="gcc"
3248 cxx_default="g++"
3249 host_cc_default="gcc"
3250 doxygen_default="doxygen"
3251 install="install"
3252 ln_s_default="ln -s -f"
3253 nm_default="nm -g"
3254 objformat="elf"
3255 pkg_config_default=pkg-config
3256 ranlib_default="ranlib"
3257 strip_default="strip"
3258 version_script='--version-script'
3259 yasmexe_default="yasm"
3260 windres_default="windres"
3261 nvcc_default="nvcc"
3262 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3263
3264 # OS
3265 target_os_default=$(tolower $(uname -s))
3266 host_os=$target_os_default
3267
3268 # machine
3269 if test "$target_os_default" = aix; then
3270     arch_default=$(uname -p)
3271     strip_default="strip -X32_64"
3272 else
3273     arch_default=$(uname -m)
3274 fi
3275 cpu="generic"
3276 intrinsics="none"
3277
3278 # configurable options
3279 enable $PROGRAM_LIST
3280 enable $DOCUMENT_LIST
3281 enable $EXAMPLE_LIST
3282 enable $(filter_out avresample $LIBRARY_LIST)
3283 enable stripping
3284
3285 enable asm
3286 enable debug
3287 enable doc
3288 enable faan faandct faanidct
3289 enable optimizations
3290 enable runtime_cpudetect
3291 enable safe_bitstream_reader
3292 enable static
3293 enable swscale_alpha
3294 enable valgrind_backtrace
3295
3296 sws_max_filter_size_default=256
3297 set_default sws_max_filter_size
3298
3299 # build settings
3300 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3301 LIBPREF="lib"
3302 LIBSUF=".a"
3303 FULLNAME='$(NAME)$(BUILDSUF)'
3304 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3305 SLIBPREF="lib"
3306 SLIBSUF=".so"
3307 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3308 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3309 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3310 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3311 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3312 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3313 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3314
3315 asflags_filter=echo
3316 cflags_filter=echo
3317 ldflags_filter=echo
3318
3319 AS_C='-c'
3320 AS_O='-o $@'
3321 CC_C='-c'
3322 CC_E='-E -o $@'
3323 CC_O='-o $@'
3324 CXX_C='-c'
3325 CXX_O='-o $@'
3326 OBJCC_C='-c'
3327 OBJCC_E='-E -o $@'
3328 OBJCC_O='-o $@'
3329 LD_O='-o $@'
3330 LD_LIB='-l%'
3331 LD_PATH='-L'
3332 HOSTCC_C='-c'
3333 HOSTCC_E='-E -o $@'
3334 HOSTCC_O='-o $@'
3335 HOSTLD_O='-o $@'
3336 NVCC_C='-c'
3337 NVCC_O='-o $@'
3338
3339 host_extralibs='-lm'
3340 host_cflags_filter=echo
3341 host_ldflags_filter=echo
3342
3343 target_path='$(CURDIR)'
3344
3345 # since the object filename is not given with the -MM flag, the compiler
3346 # is only able to print the basename, and we must add the path ourselves
3347 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3348 DEPFLAGS='-MM'
3349
3350 # find source path
3351 if test -f configure; then
3352     source_path=.
3353 else
3354     source_path=$(cd $(dirname "$0"); pwd)
3355     case "$source_path" in
3356         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3357     esac
3358     test -e "$source_path/config.h" &&
3359         die "Out of tree builds are impossible with config.h in source dir."
3360 fi
3361
3362 for v in "$@"; do
3363     r=${v#*=}
3364     l=${v%"$r"}
3365     r=$(sh_quote "$r")
3366     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3367 done
3368
3369 find_things(){
3370     thing=$1
3371     pattern=$2
3372     file=$source_path/$3
3373     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3374 }
3375
3376 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3377 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3378 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3379 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3380 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3381 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3382 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3383 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3384 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3385
3386 find_things_extern(){
3387     thing=$1
3388     pattern=$2
3389     file=$source_path/$3
3390     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3391 }
3392
3393 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3394 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3395
3396 ALL_COMPONENTS="
3397     $BSF_LIST
3398     $DECODER_LIST
3399     $DEMUXER_LIST
3400     $ENCODER_LIST
3401     $FILTER_LIST
3402     $HWACCEL_LIST
3403     $INDEV_LIST
3404     $MUXER_LIST
3405     $OUTDEV_LIST
3406     $PARSER_LIST
3407     $PROTOCOL_LIST
3408 "
3409
3410 for n in $COMPONENT_LIST; do
3411     v=$(toupper ${n%s})_LIST
3412     eval enable \$$v
3413     eval ${n}_if_any="\$$v"
3414 done
3415
3416 enable $ARCH_EXT_LIST
3417
3418 die_unknown(){
3419     echo "Unknown option \"$1\"."
3420     echo "See $0 --help for available options."
3421     exit 1
3422 }
3423
3424 print_in_columns() {
3425     cols=$(expr $ncols / 24)
3426     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3427 }
3428
3429 show_list() {
3430     suffix=_$1
3431     shift
3432     echo $* | sed s/$suffix//g | print_in_columns
3433     exit 0
3434 }
3435
3436 rand_list(){
3437     IFS=', '
3438     set -- $*
3439     unset IFS
3440     for thing; do
3441         comp=${thing%:*}
3442         prob=${thing#$comp}
3443         prob=${prob#:}
3444         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3445         echo "prob ${prob:-0.5}"
3446         printf '%s\n' $comp
3447     done
3448 }
3449
3450 do_random(){
3451     action=$1
3452     shift
3453     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3454     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3455 }
3456
3457 for opt do
3458     optval="${opt#*=}"
3459     case "$opt" in
3460         --extra-ldflags=*)
3461             add_ldflags $optval
3462         ;;
3463         --extra-ldexeflags=*)
3464             add_ldexeflags $optval
3465         ;;
3466         --extra-ldlibflags=*)
3467             add_ldlibflags $optval
3468         ;;
3469         --extra-libs=*)
3470             add_extralibs $optval
3471         ;;
3472         --disable-devices)
3473             disable $INDEV_LIST $OUTDEV_LIST
3474         ;;
3475         --enable-debug=*)
3476             debuglevel="$optval"
3477         ;;
3478         --disable-programs)
3479             disable $PROGRAM_LIST
3480         ;;
3481         --disable-everything)
3482             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3483         ;;
3484         --disable-all)
3485             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3486             disable $LIBRARY_LIST $PROGRAM_LIST doc
3487             enable avutil
3488         ;;
3489         --enable-random|--disable-random)
3490             action=${opt%%-random}
3491             do_random ${action#--} $COMPONENT_LIST
3492         ;;
3493         --enable-random=*|--disable-random=*)
3494             action=${opt%%-random=*}
3495             do_random ${action#--} $optval
3496         ;;
3497         --enable-*=*|--disable-*=*)
3498             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3499             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3500             eval list=\$$(toupper $thing)_LIST
3501             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3502             list=$(filter "$name" $list)
3503             [ "$list" = "" ] && warn "Option $opt did not match anything"
3504             $action $list
3505         ;;
3506         --enable-?*|--disable-?*)
3507             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3508             if is_in $option $COMPONENT_LIST; then
3509                 test $action = disable && action=unset
3510                 eval $action \$$(toupper ${option%s})_LIST
3511             elif is_in $option $CMDLINE_SELECT; then
3512                 $action $option
3513             else
3514                 die_unknown $opt
3515             fi
3516         ;;
3517         --list-*)
3518             NAME="${opt#--list-}"
3519             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3520             NAME=${NAME%s}
3521             eval show_list $NAME \$$(toupper $NAME)_LIST
3522         ;;
3523         --help|-h) show_help
3524         ;;
3525         --quiet|-q) quiet=yes
3526         ;;
3527         --fatal-warnings) enable fatal_warnings
3528         ;;
3529         --libfuzzer=*)
3530             libfuzzer_path="$optval"
3531         ;;
3532         *)
3533             optname="${opt%%=*}"
3534             optname="${optname#--}"
3535             optname=$(echo "$optname" | sed 's/-/_/g')
3536             if is_in $optname $CMDLINE_SET; then
3537                 eval $optname='$optval'
3538             elif is_in $optname $CMDLINE_APPEND; then
3539                 append $optname "$optval"
3540             else
3541                 die_unknown $opt
3542             fi
3543         ;;
3544     esac
3545 done
3546
3547 for e in $env; do
3548     eval "export $e"
3549 done
3550
3551 # Mark specifically enabled, but normally autodetected libraries as requested.
3552 for lib in $AUTODETECT_LIBS; do
3553     enabled $lib && request $lib
3554 done
3555
3556 # Enable platform codecs by default.
3557 enable_weak audiotoolbox
3558
3559 # Enable hwaccels by default.
3560 enable_weak d3d11va dxva2 vaapi vda vdpau videotoolbox_hwaccel xvmc
3561 enable_weak xlib
3562
3563 enable_weak cuda cuvid nvenc vda_framework videotoolbox videotoolbox_encoder
3564
3565 disabled logging && logfile=/dev/null
3566
3567 die_license_disabled() {
3568     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3569 }
3570
3571 die_license_disabled_gpl() {
3572     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3573 }
3574
3575 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3576 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3577
3578 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3579 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3580
3581 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3582
3583 # Disable all the library-specific components if the library itself
3584 # is disabled, see AVCODEC_LIST and following _LIST variables.
3585
3586 disable_components(){
3587     disabled ${1} && disable $(
3588         eval components="\$$(toupper ${1})_COMPONENTS"
3589         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3590     )
3591 }
3592
3593 map 'disable_components $v' $LIBRARY_LIST
3594
3595 mkdir -p ffbuild
3596 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3597 set >> $logfile
3598
3599 test -n "$valgrind" && toolchain="valgrind-memcheck"
3600
3601 enabled ossfuzz && {
3602     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
3603     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
3604 }
3605
3606 case "$toolchain" in
3607     *-asan)
3608         cc_default="${toolchain%-asan}"
3609         add_cflags  -fsanitize=address
3610         add_ldflags -fsanitize=address
3611     ;;
3612     *-msan)
3613         cc_default="${toolchain%-msan}"
3614         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3615         add_ldflags -fsanitize=memory
3616     ;;
3617     *-tsan)
3618         cc_default="${toolchain%-tsan}"
3619         add_cflags  -fsanitize=thread -fPIE
3620         add_ldflags -fsanitize=thread -pie
3621         case "$toolchain" in
3622             gcc-tsan)
3623                 add_cflags  -fPIC
3624                 add_ldflags -fPIC
3625                 ;;
3626         esac
3627     ;;
3628     *-usan)
3629         cc_default="${toolchain%-usan}"
3630         add_cflags  -fsanitize=undefined
3631         add_ldflags -fsanitize=undefined
3632     ;;
3633     valgrind-*)
3634         target_exec_default="valgrind"
3635         case "$toolchain" in
3636             valgrind-massif)
3637                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3638                 ;;
3639             valgrind-memcheck)
3640                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3641                 ;;
3642         esac
3643     ;;
3644     msvc)
3645         # Check whether the current MSVC version needs the C99 converter.
3646         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3647         # support enough of C99 to build ffmpeg. Default to the new
3648         # behaviour if the regexp was unable to match anything, since this
3649         # successfully parses the version number of existing supported
3650         # versions that require the converter (MSVC 2010 and 2012).
3651         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3652         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3653             cc_default="cl"
3654             cxx_default="cl"
3655         else
3656             cc_default="c99wrap cl"
3657             cxx_default="c99wrap cl"
3658         fi
3659         ld_default="$source_path/compat/windows/mslink"
3660         nm_default="dumpbin -symbols"
3661         ar_default="lib"
3662         case "$arch" in
3663         arm*)
3664             as_default="armasm"
3665             ;;
3666         esac
3667         target_os_default="win32"
3668         # Use a relative path for TMPDIR. This makes sure all the
3669         # ffconf temp files are written with a relative path, avoiding
3670         # issues with msys/win32 path conversion for MSVC parameters
3671         # such as -Fo<file> or -out:<file>.
3672         TMPDIR=.
3673     ;;
3674     icl)
3675         cc_default="icl"
3676         ld_default="xilink"
3677         nm_default="dumpbin -symbols"
3678         ar_default="xilib"
3679         target_os_default="win32"
3680         TMPDIR=.
3681     ;;
3682     gcov)
3683         add_cflags  -fprofile-arcs -ftest-coverage
3684         add_ldflags -fprofile-arcs -ftest-coverage
3685     ;;
3686     llvm-cov)
3687         add_cflags -fprofile-arcs -ftest-coverage
3688         add_ldflags --coverage
3689     ;;
3690     hardened)
3691         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3692         add_cflags   -fno-strict-overflow -fstack-protector-all
3693         add_ldflags  -Wl,-z,relro -Wl,-z,now
3694         add_cflags   -fPIE
3695         add_ldexeflags -fPIE -pie
3696     ;;
3697     ?*)
3698         die "Unknown toolchain $toolchain"
3699     ;;
3700 esac
3701
3702 test -n "$cross_prefix" && enable cross_compile
3703
3704 if enabled cross_compile; then
3705     test -n "$arch" && test -n "$target_os" ||
3706         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3707 fi
3708
3709 ar_default="${cross_prefix}${ar_default}"
3710 cc_default="${cross_prefix}${cc_default}"
3711 cxx_default="${cross_prefix}${cxx_default}"
3712 nm_default="${cross_prefix}${nm_default}"
3713 pkg_config_default="${cross_prefix}${pkg_config_default}"
3714 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3715     ranlib_default="${cross_prefix}${ranlib_default} -D"
3716 else
3717     ranlib_default="${cross_prefix}${ranlib_default}"
3718 fi
3719 strip_default="${cross_prefix}${strip_default}"
3720 windres_default="${cross_prefix}${windres_default}"
3721
3722 sysinclude_default="${sysroot}/usr/include"
3723
3724 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3725     target_exec target_os yasmexe nvcc
3726 enabled cross_compile || host_cc_default=$cc
3727 set_default host_cc
3728
3729 pkg_config_fail_message=""
3730 if ! $pkg_config --version >/dev/null 2>&1; then
3731     warn "$pkg_config not found, library detection may fail."
3732     pkg_config=false
3733 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3734     pkg_config_fail_message="
3735 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3736 fi
3737
3738 if test $doxygen != $doxygen_default && \
3739   ! $doxygen --version >/dev/null 2>&1; then
3740     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3741 fi
3742
3743 exesuf() {
3744     case $1 in
3745         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3746     esac
3747 }
3748
3749 EXESUF=$(exesuf $target_os)
3750 HOSTEXESUF=$(exesuf $host_os)
3751
3752 # set temporary file name
3753 : ${TMPDIR:=$TEMPDIR}
3754 : ${TMPDIR:=$TMP}
3755 : ${TMPDIR:=/tmp}
3756
3757 if [ -n "$tempprefix" ] ; then
3758     mktemp(){
3759         tmpname="$tempprefix.${HOSTNAME}.${UID}"
3760         echo "$tmpname"
3761         mkdir "$tmpname"
3762     }
3763 elif ! check_cmd mktemp -u XXXXXX; then
3764     # simple replacement for missing mktemp
3765     # NOT SAFE FOR GENERAL USE
3766     mktemp(){
3767         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3768         echo "$tmpname"
3769         mkdir "$tmpname"
3770     }
3771 fi
3772
3773 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
3774     die "Unable to create temporary directory in $TMPDIR."
3775
3776 tmpfile(){
3777     tmp="${FFTMPDIR}/test"$2
3778     (set -C; exec > $tmp) 2> /dev/null ||
3779         die "Unable to create temporary file in $FFTMPDIR."
3780     eval $1=$tmp
3781 }
3782
3783 trap 'rm -rf -- "$FFTMPDIR"' EXIT
3784 trap 'exit 2' INT
3785
3786 tmpfile TMPASM .asm
3787 tmpfile TMPC   .c
3788 tmpfile TMPCPP .cpp
3789 tmpfile TMPE   $EXESUF
3790 tmpfile TMPH   .h
3791 tmpfile TMPM   .m
3792 tmpfile TMPO   .o
3793 tmpfile TMPS   .S
3794 tmpfile TMPSH  .sh
3795 tmpfile TMPV   .ver
3796
3797 unset -f mktemp
3798
3799 chmod +x $TMPE
3800
3801 # make sure we can execute files in $TMPDIR
3802 cat > $TMPSH 2>> $logfile <<EOF
3803 #! /bin/sh
3804 EOF
3805 chmod +x $TMPSH >> $logfile 2>&1
3806 if ! $TMPSH >> $logfile 2>&1; then
3807     cat <<EOF
3808 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3809 variable to another directory and make sure that it is not mounted noexec.
3810 EOF
3811     die "Sanity test failed."
3812 fi
3813
3814 armasm_flags(){
3815     for flag; do
3816         case $flag in
3817             # Filter out MSVC cl.exe options from cflags that shouldn't
3818             # be passed to gas-preprocessor
3819             -M[TD]*)                                            ;;
3820             *)                  echo $flag                      ;;
3821         esac
3822    done
3823 }
3824
3825 ccc_flags(){
3826     for flag; do
3827         case $flag in
3828             -std=c99)           echo -c99                       ;;
3829             -mcpu=*)            echo -arch ${flag#*=}           ;;
3830             -mieee)             echo -ieee                      ;;
3831             -O*|-fast)          echo $flag                      ;;
3832             -fno-math-errno)    echo -assume nomath_errno       ;;
3833             -g)                 echo -g3                        ;;
3834             -Wall)              echo -msg_enable level2         ;;
3835             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3836             -Wl,*)              echo $flag                      ;;
3837             -f*|-W*)                                            ;;
3838             *)                  echo $flag                      ;;
3839         esac
3840    done
3841 }
3842
3843 cparser_flags(){
3844     for flag; do
3845         case $flag in
3846             -Wno-switch)             echo -Wno-switch-enum ;;
3847             -Wno-format-zero-length) ;;
3848             -Wdisabled-optimization) ;;
3849             -Wno-pointer-sign)       echo -Wno-other ;;
3850             *)                       echo $flag ;;
3851         esac
3852     done
3853 }
3854
3855 msvc_common_flags(){
3856     for flag; do
3857         case $flag in
3858             # In addition to specifying certain flags under the compiler
3859             # specific filters, they must be specified here as well or else the
3860             # generic catch all at the bottom will print the original flag.
3861             -Wall)                ;;
3862             -Wextra)              ;;
3863             -std=c99)             ;;
3864             # Common flags
3865             -fomit-frame-pointer) ;;
3866             -g)                   echo -Z7 ;;
3867             -fno-math-errno)      ;;
3868             -fno-common)          ;;
3869             -fno-signed-zeros)    ;;
3870             -fPIC)                ;;
3871             -mthumb)              ;;
3872             -march=*)             ;;
3873             -lz)                  echo zlib.lib ;;
3874             -lx264)               echo libx264.lib ;;
3875             -lstdc++)             ;;
3876             -l*)                  echo ${flag#-l}.lib ;;
3877             -LARGEADDRESSAWARE)   echo $flag ;;
3878             -L*)                  echo -libpath:${flag#-L} ;;
3879             *)                    echo $flag ;;
3880         esac
3881     done
3882 }
3883
3884 msvc_flags(){
3885     msvc_common_flags "$@"
3886     for flag; do
3887         case $flag in
3888             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
3889                                        -wd4554 ;;
3890             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3891                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3892                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3893                                        -wd4307 \
3894                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
3895         esac
3896     done
3897 }
3898
3899 icl_flags(){
3900     msvc_common_flags "$@"
3901     for flag; do
3902         case $flag in
3903             # Despite what Intel's documentation says -Wall, which is supported
3904             # on Windows, does enable remarks so disable them here.
3905             -Wall)                echo $flag -Qdiag-disable:remark ;;
3906             -std=c99)             echo -Qstd=c99 ;;
3907             -flto)                echo -ipo ;;
3908         esac
3909     done
3910 }
3911
3912 icc_flags(){
3913     for flag; do
3914         case $flag in
3915             -flto)                echo -ipo ;;
3916             *)                    echo $flag ;;
3917         esac
3918     done
3919 }
3920
3921 pgi_flags(){
3922     for flag; do
3923         case $flag in
3924             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3925             -fomit-frame-pointer) echo -Mnoframe ;;
3926             -g)                   echo -gopt ;;
3927             *)                    echo $flag ;;
3928         esac
3929     done
3930 }
3931
3932 suncc_flags(){
3933     for flag; do
3934         case $flag in
3935             -march=*|-mcpu=*)
3936                 case "${flag#*=}" in
3937                     native)                   echo -xtarget=native       ;;
3938                     v9|niagara)               echo -xarch=sparc          ;;
3939                     ultrasparc)               echo -xarch=sparcvis       ;;
3940                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3941                     i586|pentium)             echo -xchip=pentium        ;;
3942                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3943                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3944                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3945                     pentium4*)          echo -xtarget=pentium4           ;;
3946                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3947                     *-sse3)             echo -xarch=sse3                 ;;
3948                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3949                     bonnell)                   echo -xarch=ssse3         ;;
3950                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3951                     westmere)                  echo -xtarget=westmere    ;;
3952                     silvermont)                echo -xarch=sse4_2        ;;
3953                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3954                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
3955                                                echo -xarch=avx           ;;
3956                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3957                     btver1)                    echo -xarch=amdsse4a      ;;
3958                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
3959                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3960                     k8|opteron|athlon64|athlon-fx)
3961                                                echo -xarch=sse2a         ;;
3962                     athlon*)                   echo -xarch=pentium_proa  ;;
3963                 esac
3964                 ;;
3965             -std=c99)             echo -xc99              ;;
3966             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3967             -fPIC)                echo -KPIC -xcode=pic32 ;;
3968             -W*,*)                echo $flag              ;;
3969             -f*-*|-W*|-mimpure-text)                      ;;
3970             -shared)              echo -G                 ;;
3971             *)                    echo $flag              ;;
3972         esac
3973     done
3974 }
3975
3976 tms470_flags(){
3977     for flag; do
3978         case $flag in
3979             -march=*|-mcpu=*)
3980                 case "${flag#*=}" in
3981                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3982                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3983                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3984                     armv6*|arm11*)          echo -mv=6   ;;
3985                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3986                                             echo -mv=5e  ;;
3987                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3988                 esac
3989                 ;;
3990             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3991             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3992             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3993             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3994             -msoft-float)   echo --float_support=vfplib       ;;
3995             -O[0-3]|-mf=*)  echo $flag                        ;;
3996             -g)             echo -g -mn                       ;;
3997             -pds=*)         echo $flag                        ;;
3998             -D*|-I*)        echo $flag                        ;;
3999             --gcc|--abi=*)  echo $flag                        ;;
4000             -me)            echo $flag                        ;;
4001         esac
4002     done
4003 }
4004
4005 probe_cc(){
4006     pfx=$1
4007     _cc=$2
4008     first=$3
4009
4010     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4011     unset _ld_o _ldflags _ld_lib _ld_path
4012     unset _depflags _DEPCMD _DEPFLAGS
4013     _flags_filter=echo
4014
4015     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4016         true # no-op to avoid reading stdin in following checks
4017     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4018         _type=llvm_gcc
4019         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4020         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4021         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4022         _cflags_speed='-O3'
4023         _cflags_size='-Os'
4024     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4025         _type=gcc
4026         gcc_version=$($_cc --version | head -n1)
4027         gcc_basever=$($_cc -dumpversion)
4028         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4029         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4030         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4031         case $gcc_basever in
4032             2) ;;
4033             2.*) ;;
4034             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4035         esac
4036         if [ "$first" = true ]; then
4037             case $gcc_basever in
4038                 4.2*)
4039                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4040             esac
4041         fi
4042         _cflags_speed='-O3'
4043         _cflags_size='-Os'
4044     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4045         _type=icc
4046         _ident=$($_cc --version | head -n1)
4047         _depflags='-MMD'
4048         _cflags_speed='-O3'
4049         _cflags_size='-Os'
4050         _cflags_noopt='-O1'
4051         _flags_filter=icc_flags
4052     elif $_cc -v 2>&1 | grep -q xlc; then
4053         _type=xlc
4054         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4055         _cflags_speed='-O5'
4056         _cflags_size='-O5 -qcompact'
4057     elif $_cc -V 2>/dev/null | grep -q Compaq; then
4058         _type=ccc
4059         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
4060         _DEPFLAGS='-M'
4061         _cflags_speed='-fast'
4062         _cflags_size='-O1'
4063         _flags_filter=ccc_flags
4064     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4065         test -d "$sysroot" || die "No valid sysroot specified."
4066         _type=armcc
4067         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4068         armcc_conf="$PWD/armcc.conf"
4069         $_cc --arm_linux_configure                 \
4070              --arm_linux_config_file="$armcc_conf" \
4071              --configure_sysroot="$sysroot"        \
4072              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4073              die "Error creating armcc configuration file."
4074         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4075         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4076         as_default="${cross_prefix}gcc"
4077         _depflags='-MMD'
4078         _cflags_speed='-O3'
4079         _cflags_size='-Os'
4080     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
4081         _type=tms470
4082         _ident=$($_cc -version | head -n1 | tr -s ' ')
4083         _flags='--gcc --abi=eabi -me'
4084         _cc_e='-ppl -fe=$@'
4085         _cc_o='-fe=$@'
4086         _depflags='-ppa -ppd=$(@:.o=.d)'
4087         _cflags_speed='-O3 -mf=5'
4088         _cflags_size='-O3 -mf=2'
4089         _flags_filter=tms470_flags
4090     elif $_cc -v 2>&1 | grep -q clang; then
4091         _type=clang
4092         _ident=$($_cc --version 2>/dev/null | head -n1)
4093         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4094         _cflags_speed='-O3'
4095         _cflags_size='-Oz'
4096     elif $_cc -V 2>&1 | grep -q Sun; then
4097         _type=suncc
4098         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4099         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4100         _DEPFLAGS='-xM1 -xc99'
4101         _ldflags='-std=c99'
4102         _cflags_speed='-O5'
4103         _cflags_size='-O5 -xspace'
4104         _flags_filter=suncc_flags
4105     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4106         _type=pathscale
4107         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4108         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4109         _cflags_speed='-O2'
4110         _cflags_size='-Os'
4111         _flags_filter='filter_out -Wdisabled-optimization'
4112     elif $_cc -v 2>&1 | grep -q Open64; then
4113         _type=open64
4114         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4115         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4116         _cflags_speed='-O2'
4117         _cflags_size='-Os'
4118         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4119     elif $_cc -V 2>&1 | grep -q Portland; then
4120         _type=pgi
4121         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
4122         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
4123         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
4124         _cflags_size="-O2 -Munroll=c:1 $opt_common"
4125         _cflags_noopt="-O"
4126         _flags_filter=pgi_flags
4127     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4128         _type=armasm
4129         _ident=$($_cc | head -n1)
4130         # 4509: "This form of conditional instruction is deprecated"
4131         _flags="-nologo -ignore 4509"
4132         _flags_filter=armasm_flags
4133     elif $_cc 2>&1 | grep -q Intel; then
4134         _type=icl
4135         _ident=$($_cc 2>&1 | head -n1)
4136         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4137         # Not only is O3 broken on 13.x+ but it is slower on all previous
4138         # versions (tested) as well.
4139         _cflags_speed="-O2"
4140         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4141         if $_cc 2>&1 | grep -q Linker; then
4142             _ld_o='-out:$@'
4143         else
4144             _ld_o='-Fe$@'
4145         fi
4146         _cc_o='-Fo$@'
4147         _cc_e='-P'
4148         _flags_filter=icl_flags
4149         _ld_lib='lib%.a'
4150         _ld_path='-libpath:'
4151         # -Qdiag-error to make icl error when seeing certain unknown arguments
4152         _flags='-nologo -Qdiag-error:4044,10157'
4153         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4154         # with MSVC which enables it by default.
4155         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4156         disable stripping
4157     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4158         # lld can emulate multiple different linkers; in ms link.exe mode,
4159         # the -? parameter gives the help output which contains an identifyable
4160         # string, while it gives an error in other modes.
4161         _type=lld-link
4162         # The link.exe mode doesn't have a switch for getting the version,
4163         # but we can force it back to gnu mode and get the version from there.
4164         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4165         _ld_o='-out:$@'
4166         _flags_filter=msvc_flags
4167         _ld_lib='lib%.a'
4168         _ld_path='-libpath:'
4169     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4170         _type=msvc
4171         _ident=$($_cc 2>&1 | head -n1)
4172         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4173         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4174         _cflags_speed="-O2"
4175         _cflags_size="-O1"
4176         _cflags_noopt="-O1"
4177         if $_cc -nologo- 2>&1 | grep -q Linker; then
4178             _ld_o='-out:$@'
4179         else
4180             _ld_o='-Fe$@'
4181         fi
4182         _cc_o='-Fo$@'
4183         _cc_e='-P -Fi$@'
4184         _flags_filter=msvc_flags
4185         _ld_lib='lib%.a'
4186         _ld_path='-libpath:'
4187         _flags='-nologo'
4188         disable stripping
4189     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4190         _type=cparser
4191         _ident=$($_cc --version | head -n1)
4192         _depflags='-MMD'
4193         _cflags_speed='-O4'
4194         _cflags_size='-O2'
4195         _flags_filter=cparser_flags
4196     fi
4197
4198     eval ${pfx}_type=\$_type
4199     eval ${pfx}_ident=\$_ident
4200 }
4201
4202 set_ccvars(){
4203     eval ${1}_C=\${_cc_c-\${${1}_C}}
4204     eval ${1}_E=\${_cc_e-\${${1}_E}}
4205     eval ${1}_O=\${_cc_o-\${${1}_O}}
4206
4207     if [ -n "$_depflags" ]; then
4208         eval ${1}_DEPFLAGS=\$_depflags
4209     else
4210         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4211         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4212         eval DEP${1}FLAGS=\$_flags
4213     fi
4214 }
4215
4216 probe_cc cc "$cc" "true"
4217 cflags_filter=$_flags_filter
4218 cflags_speed=$_cflags_speed
4219 cflags_size=$_cflags_size
4220 cflags_noopt=$_cflags_noopt
4221 add_cflags $_flags $_cflags
4222 cc_ldflags=$_ldflags
4223 set_ccvars CC
4224 set_ccvars CXX
4225
4226 probe_cc hostcc "$host_cc"
4227 host_cflags_filter=$_flags_filter
4228 host_cflags_speed=$_cflags_speed
4229 add_host_cflags  $_flags $_cflags
4230 set_ccvars HOSTCC
4231
4232 test -n "$cc_type" && enable $cc_type ||
4233     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4234
4235 : ${as_default:=$cc}
4236 : ${objcc_default:=$cc}
4237 : ${dep_cc_default:=$cc}
4238 : ${ld_default:=$cc}
4239 : ${host_ld_default:=$host_cc}
4240 set_default ar as objcc dep_cc ld ln_s host_ld windres
4241
4242 probe_cc as "$as"
4243 asflags_filter=$_flags_filter
4244 add_asflags $_flags $_cflags
4245 set_ccvars AS
4246
4247 probe_cc objcc "$objcc"
4248 objcflags_filter=$_flags_filter
4249 add_objcflags $_flags $_cflags
4250 set_ccvars OBJC
4251
4252 probe_cc ld "$ld"
4253 ldflags_filter=$_flags_filter
4254 add_ldflags $_flags $_ldflags
4255 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4256 LD_O=${_ld_o-$LD_O}
4257 LD_LIB=${_ld_lib-$LD_LIB}
4258 LD_PATH=${_ld_path-$LD_PATH}
4259
4260 probe_cc hostld "$host_ld"
4261 host_ldflags_filter=$_flags_filter
4262 add_host_ldflags $_flags $_ldflags
4263 HOSTLD_O=${_ld_o-$HOSTLD_O}
4264
4265 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4266     probe_cc depcc "$dep_cc"
4267     CCDEP=${_DEPCMD:-$DEPCMD}
4268     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4269     DEPCCFLAGS=$_flags
4270 fi
4271
4272 if $ar 2>&1 | grep -q Microsoft; then
4273     arflags="-nologo"
4274     ar_o='-out:$@'
4275 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
4276     arflags="rq"
4277     ar_o='$@'
4278 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
4279     arflags='-Xany -r -c'
4280     ar_o='$@'
4281 elif $ar 2>&1 | grep -q "\[D\] "; then
4282     arflags="rcD"
4283     ar_o='$@'
4284 else
4285     arflags="rc"
4286     ar_o='$@'
4287 fi
4288
4289 add_cflags $extra_cflags
4290 add_cxxflags $extra_cxxflags
4291 add_objcflags $extra_objcflags
4292 add_asflags $extra_cflags
4293
4294 if test -n "$sysroot"; then
4295     case "$cc_type" in
4296         gcc|llvm_gcc|clang)
4297             add_cppflags --sysroot="$sysroot"
4298             add_ldflags --sysroot="$sysroot"
4299 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
4300             add_cppflags -isysroot "$sysroot"
4301             add_ldflags -isysroot "$sysroot"
4302         ;;
4303         tms470)
4304             add_cppflags -I"$sysinclude"
4305             add_ldflags  --sysroot="$sysroot"
4306         ;;
4307     esac
4308 fi
4309
4310 if test "$cpu" = host; then
4311     enabled cross_compile &&
4312         die "--cpu=host makes no sense when cross-compiling."
4313
4314     case "$cc_type" in
4315         gcc|llvm_gcc)
4316             check_native(){
4317                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4318                 sed -n "/cc1.*$1=/{
4319                             s/.*$1=\\([^ ]*\\).*/\\1/
4320                             p
4321                             q
4322                         }" $TMPE
4323             }
4324             cpu=$(check_native -march || check_native -mcpu)
4325         ;;
4326         clang)
4327             check_native(){
4328                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4329                 sed -n "/cc1.*-target-cpu /{
4330                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4331                             p
4332                             q
4333                         }" $TMPE
4334             }
4335             cpu=$(check_native -march)
4336         ;;
4337     esac
4338
4339     test "${cpu:-host}" = host &&
4340         die "--cpu=host not supported with compiler $cc"
4341 fi
4342
4343 # Deal with common $arch aliases
4344 case "$arch" in
4345     aarch64|arm64)
4346         arch="aarch64"
4347     ;;
4348     arm*|iPad*|iPhone*)
4349         arch="arm"
4350     ;;
4351     mips*|IP*)
4352         case "$arch" in
4353         *el)
4354             add_cppflags -EL
4355             add_ldflags -EL
4356         ;;
4357         *eb)
4358             add_cppflags -EB
4359             add_ldflags -EB
4360         ;;
4361         esac
4362         arch="mips"
4363     ;;
4364     parisc*|hppa*)
4365         arch="parisc"
4366     ;;
4367     "Power Macintosh"|ppc*|powerpc*)
4368         arch="ppc"
4369     ;;
4370     s390|s390x)
4371         arch="s390"
4372     ;;
4373     sh4|sh)
4374         arch="sh4"
4375     ;;
4376     sun4*|sparc*)
4377         arch="sparc"
4378     ;;
4379     tilegx|tile-gx)
4380         arch="tilegx"
4381     ;;
4382     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4383         arch="x86"
4384     ;;
4385 esac
4386
4387 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4388 enable $arch
4389
4390 # Add processor-specific flags
4391 if enabled aarch64; then
4392
4393     case $cpu in
4394         armv*)
4395             cpuflags="-march=$cpu"
4396         ;;
4397         *)
4398             cpuflags="-mcpu=$cpu"
4399         ;;
4400     esac
4401
4402 elif enabled alpha; then
4403
4404     cpuflags="-mcpu=$cpu"
4405
4406 elif enabled arm; then
4407
4408     check_arm_arch() {
4409         check_cpp_condition stddef.h \
4410             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4411             $cpuflags
4412     }
4413
4414     probe_arm_arch() {
4415         if   check_arm_arch 4;        then echo armv4
4416         elif check_arm_arch 4T;       then echo armv4t
4417         elif check_arm_arch 5;        then echo armv5
4418         elif check_arm_arch 5E;       then echo armv5e
4419         elif check_arm_arch 5T;       then echo armv5t
4420         elif check_arm_arch 5TE;      then echo armv5te
4421         elif check_arm_arch 5TEJ;     then echo armv5te
4422         elif check_arm_arch 6;        then echo armv6
4423         elif check_arm_arch 6J;       then echo armv6j
4424         elif check_arm_arch 6K;       then echo armv6k
4425         elif check_arm_arch 6Z;       then echo armv6z
4426         elif check_arm_arch 6ZK;      then echo armv6zk
4427         elif check_arm_arch 6T2;      then echo armv6t2
4428         elif check_arm_arch 7;        then echo armv7
4429         elif check_arm_arch 7A  7_A;  then echo armv7-a
4430         elif check_arm_arch 7S;       then echo armv7-a
4431         elif check_arm_arch 7R  7_R;  then echo armv7-r
4432         elif check_arm_arch 7M  7_M;  then echo armv7-m
4433         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4434         elif check_arm_arch 8A  8_A;  then echo armv8-a
4435         fi
4436     }
4437
4438     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4439
4440     case $cpu in
4441         armv*)
4442             cpuflags="-march=$cpu"
4443             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4444         ;;
4445         *)
4446             cpuflags="-mcpu=$cpu"
4447             case $cpu in
4448                 cortex-a*)                               subarch=armv7a  ;;
4449                 cortex-r*)                               subarch=armv7r  ;;
4450                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4451                 arm11*)                                  subarch=armv6   ;;
4452                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4453                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4454                 *)                             subarch=$(probe_arm_arch) ;;
4455             esac
4456         ;;
4457     esac
4458
4459     case "$subarch" in
4460         armv5t*)    enable fast_clz                ;;
4461         armv[6-8]*)
4462             enable fast_clz
4463             disabled fast_unaligned || enable fast_unaligned
4464             ;;
4465     esac
4466
4467 elif enabled avr32; then
4468
4469     case $cpu in
4470         ap7[02]0[0-2])
4471             subarch="avr32_ap"
4472             cpuflags="-mpart=$cpu"
4473         ;;
4474         ap)
4475             subarch="avr32_ap"
4476             cpuflags="-march=$cpu"
4477         ;;
4478         uc3[ab]*)
4479             subarch="avr32_uc"
4480             cpuflags="-mcpu=$cpu"
4481         ;;
4482         uc)
4483             subarch="avr32_uc"
4484             cpuflags="-march=$cpu"
4485         ;;
4486     esac
4487
4488 elif enabled bfin; then
4489
4490     cpuflags="-mcpu=$cpu"
4491
4492 elif enabled mips; then
4493
4494     cpuflags="-march=$cpu"
4495
4496     if [ "$cpu" != "generic" ]; then
4497         disable mips32r2
4498         disable mips32r5
4499         disable mips64r2
4500         disable mips32r6
4501         disable mips64r6
4502         disable loongson2
4503         disable loongson3
4504
4505         case $cpu in
4506             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4507                 enable mips32r2
4508                 disable msa
4509             ;;
4510             p5600|i6400|p6600)
4511                 disable mipsdsp
4512                 disable mipsdspr2
4513             ;;
4514             loongson*)
4515                 enable loongson2
4516                 enable loongson3
4517                 enable local_aligned_8 local_aligned_16 local_aligned_32
4518                 enable simd_align_16
4519                 enable fast_64bit
4520                 enable fast_clz
4521                 enable fast_cmov
4522                 enable fast_unaligned
4523                 disable aligned_stack
4524                 disable mipsfpu
4525                 disable mipsdsp
4526                 disable mipsdspr2
4527                 case $cpu in
4528                     loongson3*)
4529                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4530                     ;;
4531                     loongson2e)
4532                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4533                     ;;
4534                     loongson2f)
4535                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4536                     ;;
4537                 esac
4538             ;;
4539             *)
4540                 # Unknown CPU. Disable everything.
4541                 warn "unknown CPU. Disabling all MIPS optimizations."
4542                 disable mipsfpu
4543                 disable mipsdsp
4544                 disable mipsdspr2
4545                 disable msa
4546                 disable mmi
4547             ;;
4548         esac
4549
4550         case $cpu in
4551             24kc)
4552                 disable mipsfpu
4553                 disable mipsdsp
4554                 disable mipsdspr2
4555             ;;
4556             24kf*)
4557                 disable mipsdsp
4558                 disable mipsdspr2
4559             ;;
4560             24kec|34kc|1004kc)
4561                 disable mipsfpu
4562                 disable mipsdspr2
4563             ;;
4564             24kef*|34kf*|1004kf*)
4565                 disable mipsdspr2
4566             ;;
4567             74kc)
4568                 disable mipsfpu
4569             ;;
4570             p5600)
4571                 enable mips32r5
4572                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4573             ;;
4574             i6400)
4575                 enable mips64r6
4576                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4577             ;;
4578             p6600)
4579                 enable mips64r6
4580                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4581             ;;
4582         esac
4583     else
4584         # We do not disable anything. Is up to the user to disable the unwanted features.
4585         warn 'generic cpu selected'
4586     fi
4587
4588 elif enabled ppc; then
4589
4590     disable ldbrx
4591
4592     case $(tolower $cpu) in
4593         601|ppc601|powerpc601)
4594             cpuflags="-mcpu=601"
4595             disable altivec
4596         ;;
4597         603*|ppc603*|powerpc603*)
4598             cpuflags="-mcpu=603"
4599             disable altivec
4600         ;;
4601         604*|ppc604*|powerpc604*)
4602             cpuflags="-mcpu=604"
4603             disable altivec
4604         ;;
4605         g3|75*|ppc75*|powerpc75*)
4606             cpuflags="-mcpu=750"
4607             disable altivec
4608         ;;
4609         g4|745*|ppc745*|powerpc745*)
4610             cpuflags="-mcpu=7450"
4611             disable vsx
4612         ;;
4613         74*|ppc74*|powerpc74*)
4614             cpuflags="-mcpu=7400"
4615             disable vsx
4616         ;;
4617         g5|970|ppc970|powerpc970)
4618             cpuflags="-mcpu=970"
4619             disable vsx
4620         ;;
4621         power[3-6]*)
4622             cpuflags="-mcpu=$cpu"
4623             disable vsx
4624         ;;
4625         power[7-8]*)
4626             cpuflags="-mcpu=$cpu"
4627         ;;
4628         cell)
4629             cpuflags="-mcpu=cell"
4630             enable ldbrx
4631             disable vsx
4632         ;;
4633         e500mc)
4634             cpuflags="-mcpu=e500mc"
4635             disable altivec
4636         ;;
4637         e500v2)
4638             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4639             disable altivec
4640             disable dcbzl
4641         ;;
4642         e500)
4643             cpuflags="-mcpu=8540 -mhard-float"
4644             disable altivec
4645             disable dcbzl
4646         ;;
4647     esac
4648
4649 elif enabled sparc; then
4650
4651     case $cpu in
4652         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4653             cpuflags="-mcpu=$cpu"
4654         ;;
4655         ultrasparc*|niagara[234])
4656             cpuflags="-mcpu=$cpu"
4657         ;;
4658     esac
4659
4660 elif enabled x86; then
4661
4662     case $cpu in
4663         i[345]86|pentium)
4664             cpuflags="-march=$cpu"
4665             disable i686
4666             disable mmx
4667         ;;
4668         # targets that do NOT support nopl and conditional mov (cmov)
4669         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4670             cpuflags="-march=$cpu"
4671             disable i686
4672         ;;
4673         # targets that do support nopl and conditional mov (cmov)
4674         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4675         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4676         |amdfam10|barcelona|b[dt]ver*|znver*)
4677             cpuflags="-march=$cpu"
4678             enable i686
4679             enable fast_cmov
4680         ;;
4681         # targets that do support conditional mov but on which it's slow
4682         pentium4|pentium4m|prescott|nocona)
4683             cpuflags="-march=$cpu"
4684             enable i686
4685             disable fast_cmov
4686         ;;
4687     esac
4688
4689 fi
4690
4691 if [ "$cpu" != generic ]; then
4692     add_cflags  $cpuflags
4693     add_asflags $cpuflags
4694     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4695 fi
4696
4697 # compiler sanity check
4698 check_exec <<EOF
4699 int main(void){ return 0; }
4700 EOF
4701 if test "$?" != 0; then
4702     echo "$cc is unable to create an executable file."
4703     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4704         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4705         echo "Only do this if you know what cross compiling means."
4706     fi
4707     die "C compiler test failed."
4708 fi
4709
4710 add_cppflags -D_ISOC99_SOURCE
4711 add_cxxflags -D__STDC_CONSTANT_MACROS
4712 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4713
4714 # some compilers silently accept -std=c11, so we also need to check that the
4715 # version macro is defined properly
4716 if test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L"; then
4717     add_cflags -std=c11
4718 else
4719     check_cflags -std=c99
4720 fi
4721
4722 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4723 #include <stdlib.h>
4724 EOF
4725 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4726 #include <stdlib.h>
4727 EOF
4728
4729 add_host_cppflags -D_ISOC99_SOURCE
4730 check_host_cflags -std=c99
4731 check_host_cflags -Wall
4732 check_host_cflags $host_cflags_speed
4733
4734 check_64bit(){
4735     arch32=$1
4736     arch64=$2
4737     expr=$3
4738     check_code cc "" "int test[2*($expr) - 1]" &&
4739         subarch=$arch64 || subarch=$arch32
4740 }
4741
4742 case "$arch" in
4743     aarch64|alpha|ia64)
4744         spic=$shared
4745     ;;
4746     mips)
4747         check_64bit mips mips64 '_MIPS_SIM > 1'
4748         spic=$shared
4749     ;;
4750     parisc)
4751         check_64bit parisc parisc64 'sizeof(void *) > 4'
4752         spic=$shared
4753     ;;
4754     ppc)
4755         check_64bit ppc ppc64 'sizeof(void *) > 4'
4756         spic=$shared
4757     ;;
4758     s390)
4759         check_64bit s390 s390x 'sizeof(void *) > 4'
4760         spic=$shared
4761     ;;
4762     sparc)
4763         check_64bit sparc sparc64 'sizeof(void *) > 4'
4764         spic=$shared
4765     ;;
4766     x86)
4767         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4768         # Treat x32 as x64 for now. Note it also needs spic=$shared
4769         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4770             subarch=x86_64
4771         if test "$subarch" = "x86_64"; then
4772             spic=$shared
4773         fi
4774     ;;
4775     ppc)
4776         check_cc <<EOF && subarch="ppc64"
4777         int test[(int)sizeof(char*) - 7];
4778 EOF
4779     ;;
4780 esac
4781
4782 enable $subarch
4783 enabled spic && enable_weak pic
4784
4785 # OS specific
4786 case $target_os in
4787     aix)
4788         SHFLAGS=-shared
4789         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4790         enabled shared && add_ldflags -Wl,-brtl
4791         ;;
4792     android)
4793         disable symver
4794         enable section_data_rel_ro
4795         SLIB_INSTALL_NAME='$(SLIBNAME)'
4796         SLIB_INSTALL_LINKS=
4797         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4798         ;;
4799     haiku)
4800         prefix_default="/boot/common"
4801         network_extralibs="-lnetwork"
4802         host_extralibs=
4803         ;;
4804     sunos)
4805         SHFLAGS='-shared -Wl,-h,$$(@F)'
4806         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4807         network_extralibs="-lsocket -lnsl"
4808         add_cppflags -D__EXTENSIONS__
4809         # When using suncc to build, the Solaris linker will mark
4810         # an executable with each instruction set encountered by
4811         # the Solaris assembler.  As our libraries contain their own
4812         # guards for processor-specific code, instead suppress
4813         # generation of the HWCAPS ELF section on Solaris x86 only.
4814         enabled_all suncc x86 &&
4815             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4816             add_ldflags -Wl,-M,mapfile
4817         nm_default='nm -P -g'
4818         version_script='-M'
4819         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
4820         ;;
4821     netbsd)
4822         disable symver
4823         oss_indev_extralibs="-lossaudio"
4824         oss_outdev_extralibs="-lossaudio"
4825         enabled gcc || check_ldflags -Wl,-zmuldefs
4826         ;;
4827     openbsd|bitrig)
4828         disable symver
4829         SHFLAGS='-shared'
4830         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4831         SLIB_INSTALL_LINKS=
4832         oss_indev_extralibs="-lossaudio"
4833         oss_outdev_extralibs="-lossaudio"
4834         ;;
4835     dragonfly)
4836         disable symver
4837         ;;
4838     freebsd)
4839         ;;
4840     bsd/os)
4841         add_extralibs -lpoll -lgnugetopt
4842         strip="strip -d"
4843         ;;
4844     darwin)
4845         enabled ppc && add_asflags -force_cpusubtype_ALL
4846         install_name_dir_default='$(SHLIBDIR)'
4847         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4848         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4849         strip="${strip} -x"
4850         add_ldflags -Wl,-dynamic,-search_paths_first
4851         SLIBSUF=".dylib"
4852         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4853         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4854         objformat="macho"
4855         enabled x86_64 && objformat="macho64"
4856         enabled_any pic shared x86_64 ||
4857             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4858         check_header dispatch/dispatch.h &&
4859             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
4860         version_script='-exported_symbols_list'
4861         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
4862         ;;
4863     msys*)
4864         die "Native MSYS builds are discouraged, please use the MINGW environment."
4865         ;;
4866     mingw32*|mingw64*)
4867         if test $target_os = "mingw32ce"; then
4868             disable network
4869         else
4870             target_os=mingw32
4871         fi
4872         LIBTARGET=i386
4873         if enabled x86_64; then
4874             LIBTARGET="i386:x86-64"
4875         elif enabled arm; then
4876             LIBTARGET=arm-wince
4877         fi
4878         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4879         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4880         shlibdir_default="$bindir_default"
4881         SLIBPREF=""
4882         SLIBSUF=".dll"
4883         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4884         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4885         dlltool="${cross_prefix}dlltool"
4886         if check_cmd lib.exe -list; then
4887             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4888             if enabled x86_64; then
4889                 LIBTARGET=x64
4890             fi
4891         elif check_cmd $dlltool --version; then
4892             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4893         fi
4894         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4895         SLIB_INSTALL_LINKS=
4896         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4897         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4898         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
4899         objformat="win32"
4900         ranlib=:
4901         enable dos_paths
4902         check_ldflags -Wl,--nxcompat,--dynamicbase
4903         # Lets work around some stupidity in binutils.
4904         # ld will strip relocations from executables even though we need them
4905         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4906         # however ld then forgets what the entry point should be (oops) so we
4907         # have to manually (re)set it.
4908         if enabled x86_32; then
4909             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4910         elif enabled x86_64; then
4911             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
4912             check_ldflags -Wl,--high-entropy-va # binutils 2.25
4913             # Set image base >4GB for extra entropy with HEASLR
4914             add_ldexeflags -Wl,--image-base,0x140000000
4915             append SHFLAGS -Wl,--image-base,0x180000000
4916         fi
4917         ;;
4918     win32|win64)
4919         disable symver
4920         if enabled shared; then
4921             # Link to the import library instead of the normal static library
4922             # for shared libs.
4923             LD_LIB='%.lib'
4924             # Cannot build both shared and static libs with MSVC or icl.
4925             disable static
4926         fi
4927         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4928         shlibdir_default="$bindir_default"
4929         SLIBPREF=""
4930         SLIBSUF=".dll"
4931         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4932         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4933         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4934         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4935         SLIB_INSTALL_LINKS=
4936         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4937         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4938         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4939         objformat="win32"
4940         ranlib=:
4941         enable dos_paths
4942         ;;
4943     cygwin*)
4944         target_os=cygwin
4945         shlibdir_default="$bindir_default"
4946         SLIBPREF="cyg"
4947         SLIBSUF=".dll"
4948         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4949         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4950         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4951         SLIB_INSTALL_LINKS=
4952         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4953         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4954         objformat="win32"
4955         enable dos_paths
4956         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4957         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4958         ;;
4959     *-dos|freedos|opendos)
4960         network_extralibs="-lsocket"
4961         objformat="coff"
4962         enable dos_paths
4963         add_cppflags -U__STRICT_ANSI__
4964         ;;
4965     linux)
4966         enable dv1394
4967         enable section_data_rel_ro
4968         ;;
4969     irix*)
4970         target_os=irix
4971         ranlib="echo ignoring ranlib"
4972         ;;
4973     os/2*)
4974         strip="lxlite -CS"
4975         objformat="aout"
4976         add_cppflags -D_GNU_SOURCE
4977         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
4978         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4979         LIBSUF="_s.a"
4980         SLIBPREF=""
4981         SLIBSUF=".dll"
4982         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4983         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4984         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
4985             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
4986             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
4987             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
4988             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
4989         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
4990             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
4991         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4992         SLIB_INSTALL_LINKS=
4993         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
4994         enable dos_paths
4995         enable_weak os2threads
4996         ;;
4997     gnu/kfreebsd)
4998         add_cppflags -D_BSD_SOURCE
4999         ;;
5000     gnu)
5001         ;;
5002     qnx)
5003         add_cppflags -D_QNX_SOURCE
5004         network_extralibs="-lsocket"
5005         ;;
5006     symbian)
5007         SLIBSUF=".dll"
5008         enable dos_paths
5009         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5010         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5011         add_ldflags -Wl,--target1-abs,--no-undefined \
5012                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5013                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5014         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5015                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5016                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5017         ;;
5018     osf1)
5019         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
5020         ;;
5021     minix)
5022         ;;
5023     none)
5024         ;;
5025     *)
5026         die "Unknown OS '$target_os'."
5027         ;;
5028 esac
5029
5030 # test if creating links works
5031 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5032 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5033 mkdir "$link_dest"
5034 $ln_s "$link_dest" "$link_name"
5035 touch "$link_dest/test_file"
5036 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5037     # create link to source path
5038     [ -e src ] && rm src
5039     $ln_s "$source_path" src
5040     source_link=src
5041 else
5042     # creating directory links doesn't work
5043     # fall back to using the full source path
5044     source_link="$source_path"
5045 fi
5046 # cleanup
5047 rm -r "$link_dest"
5048 rm -r "$link_name"
5049
5050 # determine libc flavour
5051
5052 probe_libc(){
5053     pfx=$1
5054     pfx_no_=${pfx%_}
5055     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5056     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5057         eval ${pfx}libc_type=uclibc
5058         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5059     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5060         eval ${pfx}libc_type=glibc
5061         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5062     # MinGW headers can be installed on Cygwin, so check for newlib first.
5063     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5064         eval ${pfx}libc_type=newlib
5065         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5066     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5067     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5068         eval ${pfx}libc_type=mingw64
5069         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5070             add_compat msvcrt/snprintf.o
5071             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5072         fi
5073         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5074         eval test \$${pfx_no_}cc_type = "gcc" &&
5075             add_${pfx}cppflags -D__printf__=__gnu_printf__
5076     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5077          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5078         eval ${pfx}libc_type=mingw32
5079         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5080             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5081             die "ERROR: MinGW32 runtime version must be >= 3.15."
5082         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5083         check_${pfx}cpp_condition _mingw.h "defined(_WIN32_WINNT) && _WIN32_WINNT >= 0x0502" ||
5084             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
5085         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5086             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5087         eval test \$${pfx_no_}cc_type = "gcc" &&
5088             add_${pfx}cppflags -D__printf__=__gnu_printf__
5089     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5090         eval ${pfx}libc_type=msvcrt
5091         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5092             if [ "$pfx" = host_ ]; then
5093                 add_host_cppflags -Dsnprintf=_snprintf
5094             else
5095                 add_compat strtod.o strtod=avpriv_strtod
5096                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5097                                              _snprintf=avpriv_snprintf  \
5098                                              vsnprintf=avpriv_vsnprintf
5099             fi
5100         fi
5101         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5102         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5103         # 0x601 by default unless something else is set by the user.
5104         # This can easily lead to us detecting functions only present
5105         # in such new versions and producing binaries requiring windows 7.0.
5106         # Therefore explicitly set the default to XP unless the user has
5107         # set something else on the command line.
5108         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5109         # family. For these cases, configure is free to use any functions
5110         # found in the SDK headers by default. (Alternatively, we could force
5111         # _WIN32_WINNT to 0x0602 in that case.)
5112         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5113             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
5114 #ifdef WINAPI_FAMILY
5115 #include <winapifamily.h>
5116 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5117 #error not desktop
5118 #endif
5119 #endif
5120 EOF
5121         if [ "$pfx" = "" ]; then
5122             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5123             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5124         fi
5125     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5126         eval ${pfx}libc_type=klibc
5127     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5128         eval ${pfx}libc_type=bionic
5129     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5130         eval ${pfx}libc_type=solaris
5131         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5132     fi
5133     check_${pfx}cc <<EOF
5134 #include <time.h>
5135 void *v = localtime_r;
5136 EOF
5137 test "$?" != 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
5138 #include <time.h>
5139 void *v = localtime_r;
5140 EOF
5141
5142 }
5143
5144 probe_libc
5145 test -n "$libc_type" && enable libc_$libc_type
5146 probe_libc host_
5147 test -n "$host_libc_type" && enable host_libc_$host_libc_type
5148
5149 case $libc_type in
5150     bionic)
5151         ;;
5152 esac
5153
5154 # hacks for compiler/libc/os combinations
5155
5156 if enabled_all tms470 libc_glibc; then
5157     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
5158     add_cppflags -D__USER_LABEL_PREFIX__=
5159     add_cppflags -D__builtin_memset=memset
5160     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
5161     add_cflags   -pds=48    # incompatible redefinition of macro
5162 fi
5163
5164 if enabled_all ccc libc_glibc; then
5165     add_ldflags -Wl,-z,now  # calls to libots crash without this
5166 fi
5167
5168 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5169     add_cppflags '-I\$(SRC_PATH)/compat/float'
5170
5171 esc(){
5172     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
5173 }
5174
5175 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
5176
5177 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5178
5179 set_default libdir
5180 : ${shlibdir_default:="$libdir"}
5181 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5182
5183 set_default $PATHS_LIST
5184 set_default nm
5185
5186 # we need to build at least one lib type
5187 if ! enabled_any static shared; then
5188     cat <<EOF
5189 At least one library type must be built.
5190 Specify --enable-static to build the static libraries or --enable-shared to
5191 build the shared libraries as well. To only build the shared libraries specify
5192 --disable-static in addition to --enable-shared.
5193 EOF
5194     exit 1
5195 fi
5196
5197 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5198
5199 enable_weak_pic() {
5200     disabled pic && return
5201     enable pic
5202     add_cppflags -DPIC
5203     case "$target_os" in
5204     mingw*|cygwin*)
5205         ;;
5206     *)
5207         add_cflags -fPIC
5208         ;;
5209     esac
5210     add_asflags  -fPIC
5211 }
5212
5213 enabled pic && enable_weak_pic
5214
5215 check_cc <<EOF || die "Symbol mangling check failed."
5216 int ff_extern;
5217 EOF
5218 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5219 extern_prefix=${sym%%ff_extern*}
5220
5221 check_cc <<EOF && enable_weak inline_asm
5222 void foo(void) { __asm__ volatile ("" ::); }
5223 EOF
5224
5225 _restrict=
5226 for restrict_keyword in restrict __restrict__ __restrict; do
5227     check_cc <<EOF && _restrict=$restrict_keyword && break
5228 void foo(char * $restrict_keyword p);
5229 EOF
5230 done
5231
5232 check_cc <<EOF && enable pragma_deprecated
5233 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
5234 EOF
5235
5236 check_cc <<EOF && enable attribute_packed
5237 struct { int x; } __attribute__((packed)) x;
5238 EOF
5239
5240 check_cc <<EOF && enable attribute_may_alias
5241 union { int x; } __attribute__((may_alias)) x;
5242 EOF
5243
5244 check_cc <<EOF || die "endian test failed"
5245 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5246 EOF
5247 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5248
5249 if ! enabled ppc64 || enabled bigendian; then
5250     disable vsx
5251 fi
5252
5253 check_gas() {
5254     log "check_gas using '$as' as AS"
5255     # :vararg is used on aarch64, arm and ppc altivec
5256     check_as <<EOF || return 1
5257 .macro m n, y:vararg=0
5258 \n: .int \y
5259 .endm
5260 m x
5261 EOF
5262     # .altmacro is only used in arm asm
5263     ! enabled arm || check_as <<EOF || return 1
5264 .altmacro
5265 EOF
5266     enable gnu_as
5267     return 0
5268 }
5269
5270 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5271     nogas=:
5272     enabled_any arm aarch64 && nogas=die
5273     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5274     as_noop=-v
5275
5276     case $as_type in
5277         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5278         gcc)  gaspp_as_type=gas ;;
5279         *)    gaspp_as_type=$as_type ;;
5280     esac
5281
5282     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5283
5284     test "${as#*gas-preprocessor.pl}" != "$as" ||
5285     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5286         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5287
5288     if ! check_gas ; then
5289         as=${gas:=$as}
5290         check_gas || \
5291             $nogas "GNU assembler not found, install/update gas-preprocessor"
5292     fi
5293
5294     check_as <<EOF && enable as_func
5295 .func test
5296 .endfunc
5297 EOF
5298 fi
5299
5300 check_inline_asm inline_asm_labels '"1:\n"'
5301
5302 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5303
5304 if enabled aarch64; then
5305     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5306     # internal assembler in clang 3.3 does not support this instruction
5307     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5308     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5309
5310     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5311
5312 elif enabled alpha; then
5313
5314     check_cflags -mieee
5315
5316 elif enabled arm; then
5317
5318     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
5319
5320     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
5321 float func(float a, float b){ return a+b; }
5322 EOF
5323
5324     enabled thumb && check_cflags -mthumb || check_cflags -marm
5325
5326     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
5327         enable vfp_args
5328     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5329         enable vfp_args
5330     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5331         case "${cross_prefix:-$cc}" in
5332             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
5333             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
5334 __asm__ (".eabi_attribute 28, 1");
5335 int main(void) { return 0; }
5336 EOF
5337         esac
5338         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5339     fi
5340
5341     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5342     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5343     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5344     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5345     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5346     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5347     enabled setend  && check_insn setend  'setend be'
5348
5349     [ $target_os = linux ] || [ $target_os = android ] ||
5350         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5351             $ARCH_EXT_LIST_ARM
5352
5353     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5354
5355     check_as <<EOF && enable as_dn_directive
5356 ra .dn d0.i16
5357 .unreq ra
5358 EOF
5359     check_as <<EOF && enable as_fpu_directive
5360 .fpu neon
5361 EOF
5362
5363     # llvm's integrated assembler supports .object_arch from llvm 3.5
5364     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
5365 .object_arch armv4
5366 EOF
5367
5368     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5369
5370 elif enabled mips; then
5371
5372     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5373     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5374     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5375
5376     # Enable minimum ISA based on selected options
5377     if enabled mips64; then
5378         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5379         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5380         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5381     else
5382         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5383         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5384         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5385         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5386     fi
5387
5388     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5389     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5390     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
5391     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5392     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5393
5394     if enabled bigendian && enabled msa; then
5395         disable msa
5396     fi
5397
5398 elif enabled parisc; then
5399
5400     if enabled gcc; then
5401         case $($cc -dumpversion) in
5402             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5403         esac
5404     fi
5405
5406 elif enabled ppc; then
5407
5408     enable local_aligned_8 local_aligned_16 local_aligned_32
5409
5410     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5411     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5412     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5413     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5414
5415     # AltiVec flags: The FSF version of GCC differs from the Apple version
5416     if enabled altivec; then
5417         check_cflags -maltivec -mabi=altivec &&
5418         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
5419         check_cflags -faltivec
5420
5421         # check if our compiler supports Motorola AltiVec C API
5422         check_cc <<EOF || disable altivec
5423 $inc_altivec_h
5424 int main(void) {
5425     vector signed int v1 = (vector signed int) { 0 };
5426     vector signed int v2 = (vector signed int) { 1 };
5427     v1 = vec_add(v1, v2);
5428     return 0;
5429 }
5430 EOF
5431
5432         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5433     fi
5434
5435     if enabled vsx; then
5436         check_cflags -mvsx &&
5437         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
5438     fi
5439
5440     if enabled power8; then
5441         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
5442     fi
5443
5444 elif enabled x86; then
5445
5446     check_builtin rdtsc    intrin.h   "__rdtsc()"
5447     check_builtin mm_empty mmintrin.h "_mm_empty()"
5448
5449     enable local_aligned_8 local_aligned_16 local_aligned_32
5450
5451     # check whether EBP is available on x86
5452     # As 'i' is stored on the stack, this program will crash
5453     # if the base pointer is used to access it because the
5454     # base pointer is cleared in the inline assembly code.
5455     check_exec_crash <<EOF && enable ebp_available
5456 volatile int i=0;
5457 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5458 return i;
5459 EOF
5460
5461     # check whether EBX is available on x86
5462     check_inline_asm ebx_available '""::"b"(0)' &&
5463         check_inline_asm ebx_available '"":::"%ebx"'
5464
5465     # check whether xmm clobbers are supported
5466     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5467
5468     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5469         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5470
5471     # check whether binutils is new enough to compile SSSE3/MMXEXT
5472     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5473     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5474
5475     if ! disabled_any asm mmx yasm; then
5476         if check_cmd $yasmexe --version; then
5477             enabled x86_64 && yasm_extra="-m amd64"
5478             yasm_debug="-g dwarf2"
5479         elif check_cmd nasm -v; then
5480             yasmexe=nasm
5481             yasm_debug="-g -F dwarf"
5482             if enabled x86_64; then
5483                 case "$objformat" in
5484                     elf)   objformat=elf64 ;;
5485                     win32) objformat=win64 ;;
5486                 esac
5487             fi
5488         fi
5489
5490         YASMFLAGS="-f $objformat $yasm_extra"
5491         enabled pic               && append YASMFLAGS "-DPIC"
5492         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
5493         case "$objformat" in
5494             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
5495         esac
5496
5497         check_yasm "movbe ecx, [5]" && enable yasm ||
5498             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
5499         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5500         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5501         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5502         check_yasm "CPU amdnop" || disable cpunop
5503     fi
5504
5505     case "$cpu" in
5506         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5507             disable fast_clz
5508         ;;
5509     esac
5510
5511 fi
5512
5513 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
5514
5515 check_ldflags -Wl,--as-needed
5516 check_ldflags -Wl,-z,noexecstack
5517
5518 if check_func dlopen && check_func dlsym; then
5519     ldl=
5520 elif check_func dlopen -ldl && check_func dlsym -ldl; then
5521     ldl=-ldl
5522 fi
5523
5524 avisynth_demuxer_extralibs='$ldl'
5525 cuda_extralibs='$ldl'
5526 decklink_outdev_extralibs="$decklink_outdev_extralibs $ldl"
5527 decklink_indev_extralibs="$decklink_indev_extralibs $ldl"
5528 frei0r_filter_extralibs='$ldl'
5529 frei0r_src_filter_extralibs='$ldl'
5530 ladspa_filter_extralibs='$ldl'
5531 nvenc_extralibs='$ldl'
5532 coreimage_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5533 coreimagesrc_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5534
5535 if ! disabled network; then
5536     check_func getaddrinfo $network_extralibs
5537     check_func inet_aton $network_extralibs
5538
5539     check_type netdb.h "struct addrinfo"
5540     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5541     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5542     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5543     check_type poll.h "struct pollfd"
5544     check_type netinet/sctp.h "struct sctp_event_subscribe"
5545     check_struct "sys/socket.h" "struct msghdr" msg_flags
5546     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5547     check_type netinet/in.h "struct sockaddr_in6"
5548     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5549     check_type "sys/types.h sys/socket.h" socklen_t
5550
5551     # Prefer arpa/inet.h over winsock2
5552     if check_header arpa/inet.h ; then
5553         check_func closesocket
5554     elif check_header winsock2.h ; then
5555         check_func_headers winsock2.h closesocket -lws2 &&
5556             network_extralibs="-lws2" ||
5557         { check_func_headers winsock2.h closesocket -lws2_32 &&
5558             network_extralibs="-lws2_32"; } || disable winsock2_h network
5559         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5560
5561         check_type ws2tcpip.h socklen_t
5562         check_type ws2tcpip.h "struct addrinfo"
5563         check_type ws2tcpip.h "struct group_source_req"
5564         check_type ws2tcpip.h "struct ip_mreq_source"
5565         check_type ws2tcpip.h "struct ipv6_mreq"
5566         check_type winsock2.h "struct pollfd"
5567         check_struct winsock2.h "struct sockaddr" sa_len
5568         check_type ws2tcpip.h "struct sockaddr_in6"
5569         check_type ws2tcpip.h "struct sockaddr_storage"
5570     else
5571         disable network
5572     fi
5573 fi
5574
5575 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5576 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5577 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5578 check_builtin sarestart signal.h "SA_RESTART"
5579 check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" -lpthread
5580 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5581 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5582 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5583 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5584
5585 case "$custom_allocator" in
5586     jemalloc)
5587         # jemalloc by default does not use a prefix
5588         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5589     ;;
5590     tcmalloc)
5591         require_pkg_config libtcmalloc gperftools/tcmalloc.h tc_malloc
5592         malloc_prefix=tc_
5593     ;;
5594 esac
5595
5596 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5597 check_func  ${malloc_prefix}memalign            && enable memalign
5598 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5599
5600 check_func  access
5601 check_func_headers stdlib.h arc4random
5602 check_func_headers time.h clock_gettime ||
5603     { check_lib clock_gettime time.h clock_gettime -lrt && LIBRT="-lrt"; }
5604 check_func  fcntl
5605 check_func  fork
5606 check_func  gethrtime
5607 check_func  getopt
5608 check_func  getrusage
5609 check_func  gettimeofday
5610 check_func  isatty
5611 check_func  mach_absolute_time
5612 check_func  mkstemp
5613 check_func  mmap
5614 check_func  mprotect
5615 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5616 check_func_headers time.h nanosleep ||
5617     { check_lib nanosleep time.h nanosleep -lrt && LIBRT="-lrt"; }
5618 check_func  sched_getaffinity
5619 check_func  setrlimit
5620 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5621 check_func  strerror_r
5622 check_func  sysconf
5623 check_func  sysctl
5624 check_func  usleep
5625
5626 check_func_headers conio.h kbhit
5627 check_func_headers io.h setmode
5628 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5629 check_func_headers stdlib.h getenv
5630 check_func_headers sys/stat.h lstat
5631
5632 check_func_headers windows.h GetProcessAffinityMask
5633 check_func_headers windows.h GetProcessTimes
5634 check_func_headers windows.h GetSystemTimeAsFileTime
5635 check_func_headers windows.h LoadLibrary
5636 check_func_headers windows.h MapViewOfFile
5637 check_func_headers windows.h PeekNamedPipe
5638 check_func_headers windows.h SetConsoleTextAttribute
5639 check_func_headers windows.h SetConsoleCtrlHandler
5640 check_func_headers windows.h Sleep
5641 check_func_headers windows.h VirtualAlloc
5642 check_struct windows.h "CONDITION_VARIABLE" Ptr
5643 check_func_headers glob.h glob
5644 enabled xlib &&
5645     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5646
5647 check_header AudioToolbox/AudioToolbox.h
5648 check_header d3d11.h
5649 check_header direct.h
5650 check_header dirent.h
5651 check_header dlfcn.h
5652 check_header dxva.h
5653 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5654 check_header io.h
5655 check_header libcrystalhd/libcrystalhd_if.h
5656 check_header mach/mach_time.h
5657 check_header malloc.h
5658 check_header net/udplite.h
5659 check_header poll.h
5660 check_header sys/mman.h
5661 check_header sys/param.h
5662 check_header sys/resource.h
5663 check_header sys/select.h
5664 check_header sys/time.h
5665 check_header sys/un.h
5666 check_header termios.h
5667 check_header unistd.h
5668 check_header valgrind/valgrind.h
5669 check_header VideoDecodeAcceleration/VDADecoder.h
5670 check_header VideoToolbox/VideoToolbox.h
5671 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5672 enabled videotoolbox && check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferColorPrimaries_ITU_R_2020 -framework CoreVideo
5673 check_header windows.h
5674 check_header X11/extensions/XvMClib.h
5675 check_header asm/types.h
5676
5677 # it seems there are versions of clang in some distros that try to use the
5678 # gcc headers, which explodes for stdatomic
5679 # so we also check that atomics actually work here
5680 check_builtin stdatomic_h stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0)"
5681
5682 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
5683 check_lib wincrypt "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
5684 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
5685
5686 check_lib coreservices "CoreServices/CoreServices.h" UTGetOSTypeFromString "-framework CoreServices"
5687
5688 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5689
5690 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5691 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5692 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5693 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5694 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5695
5696 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
5697 check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
5698 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
5699 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
5700 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5701 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5702 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
5703 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
5704
5705 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5706
5707 check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
5708
5709 if ! disabled w32threads && ! enabled pthreads; then
5710     check_func_headers "windows.h process.h" _beginthreadex &&
5711         enable w32threads || disable w32threads
5712     if ! enabled w32threads && enabled winrt; then
5713         check_func_headers "windows.h" CreateThread &&
5714             enable w32threads || disable w32threads
5715     fi
5716 fi
5717
5718 # check for some common methods of building with pthread support
5719 # do this before the optional library checks as some of them require pthreads
5720 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5721     if check_lib pthreads pthread.h pthread_join   -pthread &&
5722        check_lib pthreads pthread.h pthread_create -pthread; then
5723         add_cflags -pthread
5724     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
5725          check_lib pthreads pthread.h pthread_create -pthreads; then
5726         add_cflags -pthreads
5727     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
5728          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
5729         add_cflags -ldl -pthread
5730     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
5731          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
5732         :
5733     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
5734          check_lib pthreads pthread.h pthread_create -lpthread; then
5735         :
5736     elif check_func pthread_join && check_func pthread_create; then
5737         enable pthreads
5738     fi
5739     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5740 fi
5741
5742
5743 if enabled pthreads; then
5744   check_func pthread_cancel
5745 fi
5746
5747 enabled pthreads &&
5748     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)"
5749
5750 disabled  zlib || check_lib zlib   zlib.h      zlibVersion    -lz
5751 disabled bzlib || check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
5752 disabled  lzma || check_lib lzma   lzma.h lzma_version_number -llzma
5753
5754 check_lib libm math.h sin -lm && LIBM="-lm"
5755 disabled crystalhd || check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
5756
5757 atan2f_args=2
5758 copysign_args=2
5759 hypot_args=2
5760 ldexpf_args=2
5761 powf_args=2
5762
5763 for func in $MATH_FUNCS; do
5764     eval check_mathfunc $func \${${func}_args:-1} $LIBM
5765 done
5766
5767 for func in $COMPLEX_FUNCS; do
5768     eval check_complexfunc $func \${${func}_args:-1}
5769 done
5770
5771 # these are off by default, so fail if requested and not available
5772 enabled avfoundation_indev && { check_header_objcc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
5773 enabled avfoundation_indev && { check_lib avfoundation_indev CoreGraphics/CoreGraphics.h CGGetActiveDisplayList -framework CoreGraphics ||
5774                                 check_lib avfoundation_indev ApplicationServices/ApplicationServices.h CGGetActiveDisplayList -framework ApplicationServices; }
5775 enabled cuda_sdk          && require cuda_sdk cuda.h cuCtxCreate -lcuda
5776 enabled cuvid             && { enabled cuda ||
5777                                die "ERROR: CUVID requires CUDA"; }
5778 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5779 enabled coreimage_filter  && { check_header_objcc QuartzCore/CoreImage.h || disable coreimage_filter; }
5780 enabled coreimagesrc_filter && { check_header_objcc QuartzCore/CoreImage.h || disable coreimagesrc_filter; }
5781 enabled decklink          && { { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; } &&
5782                                { check_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a060100" || die "ERROR: Decklink API version must be >= 10.6.1."; } }
5783 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
5784 enabled gmp               && require gmp gmp.h mpz_export -lgmp
5785 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
5786 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads || die "ERROR: jni not found"; }
5787 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
5788 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5789 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
5790 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
5791 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
5792 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5793                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
5794                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5795 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
5796 enabled libdc1394         && require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new
5797 enabled libfdk_aac        && { use_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5798                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5799                                  warn "using libfdk without pkg-config"; } }
5800 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"
5801 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
5802 enabled fontconfig        && enable libfontconfig
5803 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
5804 enabled libfreetype       && require_pkg_config freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
5805 enabled libfribidi        && require_pkg_config fribidi fribidi.h fribidi_version_info
5806 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
5807 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5808                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
5809                                done || die "ERROR: libgsm not found"; }
5810 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
5811 enabled libkvazaar        && require_pkg_config "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5812 # While it may appear that require is being used as a pkg-config
5813 # fallback for libmfx, it is actually being used to detect a different
5814 # installation route altogether.  If libmfx is installed via the Intel
5815 # Media SDK or Intel Media Server Studio, these don't come with
5816 # pkg-config support.  Instead, users should make sure that the build
5817 # can find the libraries and headers through other means.
5818 enabled libmfx            && { use_pkg_config libmfx "mfx/mfxvideo.h" MFXInit ||
5819                                { require libmfx "mfx/mfxvideo.h" MFXInit -llibmfx && warn "using libmfx without pkg-config"; } }
5820 enabled libmodplug        && require_pkg_config libmodplug libmodplug/modplug.h ModPlug_Load
5821 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5822 enabled libnpp            && require libnpp npp.h nppGetLibVersion -lnppi -lnppc
5823 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5824 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5825 enabled libopencv         && { check_header opencv2/core/core_c.h &&
5826                                { use_pkg_config opencv opencv2/core/core_c.h cvCreateImageHeader ||
5827                                  require opencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
5828                                require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader; }
5829 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
5830 enabled libopenjpeg       && { { check_lib libopenjpeg openjpeg-2.1/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5831                                check_lib libopenjpeg openjpeg-2.1/openjpeg.h opj_version -lopenjp2 ||
5832                                { check_lib libopenjpeg openjpeg-2.0/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5833                                { check_lib libopenjpeg openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5834                                { check_lib libopenjpeg openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5835                                die "ERROR: libopenjpeg not found"; }
5836 enabled libopenmpt        && require_pkg_config "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create
5837 enabled libopus           && {
5838     enabled libopus_decoder && {
5839         require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
5840     }
5841     enabled libopus_encoder && {
5842         require_pkg_config opus opus_multistream.h opus_multistream_surround_encoder_create
5843     }
5844 }
5845 enabled libpulse          && require_pkg_config libpulse pulse/pulseaudio.h pa_context_new
5846 enabled librsvg           && require_pkg_config librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
5847 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
5848 enabled librubberband     && require_pkg_config "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new
5849 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
5850 enabled libsmbclient      && { use_pkg_config smbclient libsmbclient.h smbc_init ||
5851                                require smbclient libsmbclient.h smbc_init -lsmbclient; }
5852 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy
5853 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr && LIBSOXR="-lsoxr"
5854 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
5855 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
5856 enabled libtesseract      && require_pkg_config tesseract tesseract/capi.h TessBaseAPICreate
5857 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
5858 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5859                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5860                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5861 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
5862 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5863 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5864 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
5865
5866 enabled libvpx            && {
5867     enabled libvpx_vp8_decoder && {
5868         use_pkg_config "vpx >= 0.9.1" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
5869             check_lib libvpx_vp8_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
5870                 die "ERROR: libvpx decoder version must be >=0.9.1";
5871     }
5872     enabled libvpx_vp8_encoder && {
5873         use_pkg_config "vpx >= 0.9.7" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
5874             check_lib libvpx_vp8_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
5875                 die "ERROR: libvpx encoder version must be >=0.9.7";
5876     }
5877     enabled libvpx_vp9_decoder && {
5878         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
5879             check_lib libvpx_vp9_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx
5880     }
5881     enabled libvpx_vp9_encoder && {
5882         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
5883             check_lib libvpx_vp9_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx
5884     }
5885     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
5886         die "libvpx enabled but no supported decoders found"
5887     fi
5888 }
5889
5890 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
5891 enabled libwebp           && {
5892     enabled libwebp_encoder      && require_pkg_config "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
5893     enabled libwebp_anim_encoder && { use_pkg_config "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit || disable libwebp_anim_encoder; } }
5894 enabled libx264           && { use_pkg_config x264 "stdint.h x264.h" x264_encoder_encode ||
5895                                { require libx264 "stdint.h x264.h" x264_encoder_encode -lx264 &&
5896                                  warn "using libx264 without pkg-config"; } } &&
5897                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
5898                                die "ERROR: libx264 must be installed and version must be >= 0.118."; } &&
5899                              { check_cpp_condition x264.h "X264_MPEG2" &&
5900                                enable libx262; }
5901 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
5902                              { check_cpp_condition x265.h "X265_BUILD >= 68" ||
5903                                die "ERROR: libx265 version must be >= 68."; }
5904 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode -lxavs
5905 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
5906 enabled libzimg           && require_pkg_config "zimg >= 2.3.0" zimg.h zimg_get_api_version
5907 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
5908 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi &&
5909                              { check_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
5910                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
5911 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
5912 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
5913                                { ! enabled cross_compile &&
5914                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
5915                                  add_ldflags -L/opt/vc/lib/ &&
5916                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
5917                                die "ERROR: mmal not found" &&
5918                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
5919 enabled netcdf            && require_pkg_config netcdf netcdf.h nc_inq_libvers
5920 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
5921                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
5922                                die "ERROR: openal not found"; } &&
5923                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
5924                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
5925 enabled opencl            && { check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
5926                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
5927                                die "ERROR: opencl not found"; } &&
5928                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
5929                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
5930                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
5931 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
5932                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
5933                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
5934                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
5935                                die "ERROR: opengl not found."
5936                              }
5937 enabled omx_rpi           && { check_header OMX_Core.h ||
5938                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_header OMX_Core.h ; } ||
5939                                die "ERROR: OpenMAX IL headers not found"; }
5940 enabled omx               && { check_header OMX_Core.h || die "ERROR: OpenMAX IL headers not found"; }
5941 enabled openssl           && { use_pkg_config openssl openssl/ssl.h OPENSSL_init_ssl ||
5942                                use_pkg_config openssl openssl/ssl.h SSL_library_init ||
5943                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
5944                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
5945                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
5946                                die "ERROR: openssl not found"; }
5947 enabled qtkit_indev      && { check_header_objcc QTKit/QTKit.h || disable qtkit_indev; }
5948
5949 if enabled gcrypt; then
5950     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
5951     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
5952         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
5953         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
5954         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
5955             die "ERROR: gcrypt not found"
5956         add_cflags $gcrypt_cflags && add_extralibs $gcrypt_extralibs
5957     else
5958         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
5959     fi
5960 fi
5961
5962 disabled sdl && disable sdl2
5963 if ! disabled sdl2; then
5964     SDL2_CONFIG="${cross_prefix}sdl2-config"
5965     if check_pkg_config sdl2 SDL_events.h SDL_PollEvent; then
5966         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
5967         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
5968         check_func SDL_Init $sdl2_extralibs $sdl2_cflags && enable sdl2
5969     else
5970       if "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
5971         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
5972         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
5973         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
5974         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
5975         check_func SDL_Init $sdl2_extralibs $sdl2_cflags && enable sdl2
5976       fi
5977     fi
5978     if test $target_os = "mingw32"; then
5979         sdl2_extralibs="$sdl2_extralibs -mconsole"
5980     fi
5981 fi
5982 enabled sdl2 && enable sdl && add_cflags $sdl2_cflags && add_extralibs $sdl2_extralibs
5983
5984 if enabled decklink; then
5985     case $target_os in
5986         mingw32*|mingw64*|win32|win64)
5987             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
5988             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
5989             ;;
5990     esac
5991 fi
5992
5993 disabled securetransport || { check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5994     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext SecItemImport" "-Wl,-framework,CoreFoundation -Wl,-framework,Security"; }
5995
5996 disabled schannel || { check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
5997                        check_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" && enable schannel && add_extralibs -lsecur32; }
5998
5999 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6000 enabled makeinfo \
6001     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6002     && enable makeinfo_html || disable makeinfo_html
6003 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6004 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6005 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6006 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6007
6008 check_header linux/fb.h
6009 check_header linux/videodev.h
6010 check_header linux/videodev2.h
6011 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
6012
6013 check_header sys/videoio.h
6014 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
6015
6016 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6017 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6018 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6019 # w32api 3.12 had it defined wrong
6020 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
6021
6022 check_type "dshow.h" IBaseFilter
6023
6024 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6025 { check_header dev/bktr/ioctl_meteor.h &&
6026   check_header dev/bktr/ioctl_bt848.h; } ||
6027 { check_header machine/ioctl_meteor.h &&
6028   check_header machine/ioctl_bt848.h; } ||
6029 { check_header dev/video/meteor/ioctl_meteor.h &&
6030   check_header dev/video/bktr/ioctl_bt848.h; } ||
6031 check_header dev/ic/bt8xx.h
6032
6033 if check_struct sys/soundcard.h audio_buf_info bytes; then
6034     enable_safe sys/soundcard.h
6035 else
6036     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
6037     #include <sys/soundcard.h>
6038     audio_buf_info abc;
6039 EOF
6040 fi
6041 check_header soundcard.h
6042
6043 enabled_any alsa_indev alsa_outdev &&
6044     check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
6045
6046 enabled jack_indev && check_lib jack jack/jack.h jack_client_open -ljack &&
6047     check_func jack_port_get_latency_range -ljack
6048
6049 enabled_any sndio_indev sndio_outdev && check_lib sndio sndio.h sio_open -lsndio
6050
6051 if enabled libcdio; then
6052     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6053     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6054     die "ERROR: No usable libcdio/cdparanoia found"
6055 fi
6056
6057 if ! disabled libxcb; then
6058     check_pkg_config "xcb >= 1.4" xcb/xcb.h xcb_connect || {
6059         enabled libxcb && die "ERROR: libxcb >= 1.4 not found";
6060     } && enable libxcb
6061
6062 if enabled libxcb; then
6063     disabled libxcb_shm || {
6064         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
6065             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
6066         } && check_header sys/shm.h && enable libxcb_shm; }
6067
6068     disabled libxcb_xfixes || {
6069         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
6070             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
6071         } && enable libxcb_xfixes; }
6072
6073     disabled libxcb_shape || {
6074         check_pkg_config xcb-shape xcb/shape.h xcb_shape_get_rectangles || {
6075             enabled libxcb_shape && die "ERROR: libxcb_shape not found";
6076         } && enable libxcb_shape; }
6077
6078     add_cflags $xcb_cflags $xcb_shm_cflags $xcb_xfixes_cflags $xcb_shape_cflags
6079     add_extralibs $xcb_extralibs $xcb_shm_extralibs $xcb_xfixes_extralibs $xcb_shape_extralibs
6080 fi
6081 fi
6082
6083 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6084
6085 enabled dxva2api_h &&
6086     check_cc <<EOF && enable dxva2api_cobj
6087 #define _WIN32_WINNT 0x0600
6088 #define COBJMACROS
6089 #include <windows.h>
6090 #include <d3d9.h>
6091 #include <dxva2api.h>
6092 int main(void) { IDirectXVideoDecoder *o = NULL; IDirectXVideoDecoder_Release(o); return 0; }
6093 EOF
6094
6095 enabled dxva2 &&
6096     check_lib dxva2_lib windows.h CoTaskMemFree -lole32
6097
6098 enabled vaapi &&
6099     check_lib vaapi va/va.h vaInitialize -lva
6100
6101 enabled vaapi &&
6102     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
6103     disable vaapi
6104
6105 enabled vaapi &&
6106     check_lib vaapi_drm "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm
6107
6108 enabled vaapi &&
6109     check_lib vaapi_x11 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 -lX11
6110
6111 enabled vdpau &&
6112     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
6113     disable vdpau
6114
6115 enabled vdpau &&
6116     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6117
6118 if enabled x86; then
6119     case $target_os in
6120         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6121             ;;
6122         *)
6123             disable cuda cuvid nvenc
6124             ;;
6125     esac
6126 else
6127     disable cuda cuvid nvenc
6128 fi
6129
6130 enabled nvenc &&
6131     check_cc -I$source_path <<EOF || disable nvenc
6132 #include "compat/nvenc/nvEncodeAPI.h"
6133 NV_ENCODE_API_FUNCTION_LIST flist;
6134 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6135 int main(void) { return 0; }
6136 EOF
6137
6138 # Funny iconv installations are not unusual, so check it after all flags have been set
6139 disabled iconv || check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6140
6141 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6142
6143 # add some useful compiler flags if supported
6144 check_cflags -Wdeclaration-after-statement
6145 check_cflags -Wall
6146 check_cflags -Wdisabled-optimization
6147 check_cflags -Wpointer-arith
6148 check_cflags -Wredundant-decls
6149 check_cflags -Wwrite-strings
6150 check_cflags -Wtype-limits
6151 check_cflags -Wundef
6152 check_cflags -Wmissing-prototypes
6153 check_cflags -Wno-pointer-to-int-cast
6154 check_cflags -Wstrict-prototypes
6155 check_cflags -Wempty-body
6156
6157 if enabled extra_warnings; then
6158     check_cflags -Wcast-qual
6159     check_cflags -Wextra
6160     check_cflags -Wpedantic
6161 fi
6162
6163 check_disable_warning(){
6164     warning_flag=-W${1#-Wno-}
6165     test_cflags $warning_flag && add_cflags $1
6166 }
6167
6168 check_disable_warning -Wno-parentheses
6169 check_disable_warning -Wno-switch
6170 check_disable_warning -Wno-format-zero-length
6171 check_disable_warning -Wno-pointer-sign
6172 check_disable_warning -Wno-unused-const-variable
6173
6174 check_disable_warning_headers(){
6175     warning_flag=-W${1#-Wno-}
6176     test_cflags $warning_flag && add_cflags_headers $1
6177 }
6178
6179 check_disable_warning_headers -Wno-deprecated-declarations
6180 check_disable_warning_headers -Wno-unused-variable
6181
6182 check_cc <<EOF && enable blocks_extension
6183 void (^block)(void);
6184 EOF
6185
6186 # add some linker flags
6187 check_ldflags -Wl,--warn-common
6188 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6189 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
6190 enabled rpath && add_ldlibflags -Wl,-rpath,$libdir
6191 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6192
6193 # add some strip flags
6194 # -wN '..@*' is more selective than -x, but not available everywhere.
6195 check_stripflags -wN \'..@*\' || check_stripflags -x
6196
6197 enabled neon_clobber_test &&
6198     check_ldflags -Wl,--wrap,avcodec_open2              \
6199                   -Wl,--wrap,avcodec_decode_audio4      \
6200                   -Wl,--wrap,avcodec_decode_video2      \
6201                   -Wl,--wrap,avcodec_decode_subtitle2   \
6202                   -Wl,--wrap,avcodec_encode_audio2      \
6203                   -Wl,--wrap,avcodec_encode_video2      \
6204                   -Wl,--wrap,avcodec_encode_subtitle    \
6205                   -Wl,--wrap,avcodec_send_packet        \
6206                   -Wl,--wrap,avcodec_receive_packet     \
6207                   -Wl,--wrap,avcodec_send_frame         \
6208                   -Wl,--wrap,avcodec_receive_frame      \
6209                   -Wl,--wrap,swr_convert                \
6210                   -Wl,--wrap,avresample_convert ||
6211     disable neon_clobber_test
6212
6213 enabled xmm_clobber_test &&
6214     check_ldflags -Wl,--wrap,avcodec_open2              \
6215                   -Wl,--wrap,avcodec_decode_audio4      \
6216                   -Wl,--wrap,avcodec_decode_video2      \
6217                   -Wl,--wrap,avcodec_decode_subtitle2   \
6218                   -Wl,--wrap,avcodec_encode_audio2      \
6219                   -Wl,--wrap,avcodec_encode_video2      \
6220                   -Wl,--wrap,avcodec_encode_subtitle    \
6221                   -Wl,--wrap,avcodec_send_packet        \
6222                   -Wl,--wrap,avcodec_receive_packet     \
6223                   -Wl,--wrap,avcodec_send_frame         \
6224                   -Wl,--wrap,avcodec_receive_frame      \
6225                   -Wl,--wrap,swr_convert                \
6226                   -Wl,--wrap,avresample_convert         \
6227                   -Wl,--wrap,sws_scale ||
6228     disable xmm_clobber_test
6229
6230 check_ld "cc" <<EOF && enable proper_dce
6231 extern const int array[512];
6232 static inline int func(void) { return array[0]; }
6233 int main(void) { return 0; }
6234 EOF
6235
6236 if enabled proper_dce; then
6237     echo "X { local: *; };" > $TMPV
6238     if test_ldflags -Wl,${version_script},$TMPV; then
6239         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6240         check_cc <<EOF && enable symver_asm_label
6241 void ff_foo(void) __asm__ ("av_foo@VERSION");
6242 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6243 EOF
6244         check_cc <<EOF && enable symver_gnu_asm
6245 __asm__(".symver ff_foo,av_foo@VERSION");
6246 void ff_foo(void) {}
6247 EOF
6248     fi
6249 fi
6250
6251 if [ -z "$optflags" ]; then
6252     if enabled small; then
6253         optflags=$cflags_size
6254     elif enabled optimizations; then
6255         optflags=$cflags_speed
6256     else
6257         optflags=$cflags_noopt
6258     fi
6259 fi
6260
6261 if [ -z "$nvccflags" ]; then
6262     nvccflags=$nvccflags_default
6263 fi
6264
6265 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6266     nvccflags="$nvccflags -m64"
6267 else
6268     nvccflags="$nvccflags -m32"
6269 fi
6270
6271 check_optflags(){
6272     check_cflags "$@"
6273     enabled lto && check_ldflags "$@"
6274 }
6275
6276 check_optflags $optflags
6277 check_optflags -fno-math-errno
6278 check_optflags -fno-signed-zeros
6279
6280 if enabled lto; then
6281     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6282     check_cflags  -flto
6283     check_ldflags -flto $cpuflags
6284     disable inline_asm_direct_symbol_refs
6285 fi
6286
6287 enabled ftrapv && check_cflags -ftrapv
6288
6289 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6290 int x;
6291 EOF
6292
6293
6294 if enabled icc; then
6295     # Just warnings, no remarks
6296     check_cflags -w1
6297     # -wd: Disable following warnings
6298     # 144, 167, 556: -Wno-pointer-sign
6299     # 188: enumerated type mixed with another type
6300     # 1292: attribute "foo" ignored
6301     # 1419: external declaration in primary source file
6302     # 10006: ignoring unknown option -fno-signed-zeros
6303     # 10148: ignoring unknown option -Wno-parentheses
6304     # 10156: ignoring option '-W'; no argument required
6305     # 13200: No EMMS instruction before call to function
6306     # 13203: No EMMS instruction before return from function
6307     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6308     # 11030: Warning unknown option --as-needed
6309     # 10156: ignoring option '-export'; no argument required
6310     check_ldflags -wd10156,11030
6311     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6312     enable ebp_available
6313     # The test above does not test linking
6314     enabled lto && disable symver_asm_label
6315     if enabled x86_32; then
6316         icc_version=$($cc -dumpversion)
6317         test ${icc_version%%.*} -ge 11 &&
6318             check_cflags -falign-stack=maintain-16-byte ||
6319             disable aligned_stack
6320     fi
6321 elif enabled ccc; then
6322     # disable some annoying warnings
6323     add_cflags -msg_disable bitnotint
6324     add_cflags -msg_disable mixfuncvoid
6325     add_cflags -msg_disable nonstandcast
6326     add_cflags -msg_disable unsupieee
6327 elif enabled gcc; then
6328     check_optflags -fno-tree-vectorize
6329     check_cflags -Werror=format-security
6330     check_cflags -Werror=implicit-function-declaration
6331     check_cflags -Werror=missing-prototypes
6332     check_cflags -Werror=return-type
6333     check_cflags -Werror=vla
6334     check_cflags -Wformat
6335     check_cflags -fdiagnostics-color=auto
6336     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6337 elif enabled llvm_gcc; then
6338     check_cflags -mllvm -stack-alignment=16
6339 elif enabled clang; then
6340     check_cflags -mllvm -stack-alignment=16
6341     check_cflags -mstack-alignment=16
6342     check_cflags -Qunused-arguments
6343     check_cflags -Werror=implicit-function-declaration
6344     check_cflags -Werror=missing-prototypes
6345     check_cflags -Werror=return-type
6346 elif enabled cparser; then
6347     add_cflags -Wno-missing-variable-declarations
6348     add_cflags -Wno-empty-statement
6349 elif enabled armcc; then
6350     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6351     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6352     # 2523: use of inline assembly is deprecated
6353     add_cflags -W${armcc_opt},--diag_suppress=2523
6354     add_cflags -W${armcc_opt},--diag_suppress=1207
6355     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6356     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6357     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6358     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6359 elif enabled tms470; then
6360     add_cflags -pds=824 -pds=837
6361     disable inline_asm
6362 elif enabled pathscale; then
6363     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6364 elif enabled_any msvc icl; then
6365     enabled x86_32 && disable aligned_stack
6366     enabled_all x86_32 debug && add_cflags -Oy-
6367     enabled debug && add_ldflags -debug
6368     enable pragma_deprecated
6369     if enabled icl; then
6370         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6371         # (correctly) on icl 13.x.
6372         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6373             add_cflags -Qansi-alias
6374         # Some inline asm is not compilable in debug
6375         if enabled debug; then
6376             disable ebp_available
6377             disable ebx_available
6378         fi
6379     fi
6380     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6381     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
6382     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6383     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6384     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6385     # MSVC 2013 and newer can handle it fine.
6386     # If this declspec fails, force including stdlib.h before the restrict redefinition
6387     # happens in config.h.
6388     if [ $_restrict != restrict ]; then
6389         check_cc <<EOF || add_cflags -FIstdlib.h
6390 __declspec($_restrict) void* foo(int);
6391 EOF
6392     fi
6393     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6394     # Issue has been fixed in MSVC v19.00.24218.
6395     check_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6396         check_cflags -d2SSAOptimizer-
6397     # enable utf-8 source processing on VS2015 U2 and newer
6398     check_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6399         add_cflags -utf-8
6400 fi
6401
6402 for pfx in "" host_; do
6403     varname=${pfx%_}cc_type
6404     eval "type=\$$varname"
6405     if [ "$type" = "msvc" ]; then
6406         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6407 static inline int foo(int a) { return a; }
6408 EOF
6409     fi
6410 done
6411
6412 case $as_type in
6413     clang)
6414         add_asflags -Qunused-arguments
6415     ;;
6416 esac
6417
6418 case $ld_type in
6419     clang)
6420         check_ldflags -Qunused-arguments
6421     ;;
6422 esac
6423
6424 case $target_os in
6425     osf1)
6426         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
6427     ;;
6428 esac
6429
6430 enable frame_thread_encoder
6431
6432 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6433
6434 check_deps $CONFIG_LIST       \
6435            $CONFIG_EXTRA      \
6436            $HAVE_LIST         \
6437            $ALL_COMPONENTS    \
6438
6439 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"
6440
6441
6442 if test $target_os = "haiku"; then
6443     disable memalign
6444     disable posix_memalign
6445 fi
6446
6447 # add_dep lib dep
6448 # -> enable ${lib}_deps_${dep}
6449 # -> add $dep to ${lib}_deps only once
6450 add_dep() {
6451     lib=$1
6452     dep=$2
6453     enabled "${lib}_deps_${dep}" && return 0
6454     enable  "${lib}_deps_${dep}"
6455     prepend "${lib}_deps" $dep
6456 }
6457
6458 # merge deps lib components
6459 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
6460 merge_deps() {
6461     lib=$1
6462     shift
6463     for comp in $*; do
6464         enabled $comp || continue
6465         eval "dep=\"\$${comp}_deps\""
6466         for d in $dep; do
6467             add_dep $lib $d
6468         done
6469     done
6470 }
6471
6472 merge_deps libavfilter $FILTER_LIST
6473
6474 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6475
6476 for thread in $THREADS_LIST; do
6477     if enabled $thread; then
6478         test -n "$thread_type" &&
6479             die "ERROR: Only one thread type must be selected." ||
6480             thread_type="$thread"
6481     fi
6482 done
6483
6484 if disabled stdatomic_h; then
6485     if enabled atomics_gcc; then
6486         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6487     elif enabled atomics_win32; then
6488         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6489     elif enabled atomics_suncc; then
6490         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6491     elif enabled pthreads; then
6492         add_compat atomics/pthread/stdatomic.o
6493         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6494     else
6495         enabled threads && die "Threading is enabled, but no atomics are available"
6496         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6497     fi
6498 fi
6499
6500 # Check if requested libraries were found.
6501 for lib in $AUTODETECT_LIBS; do
6502     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6503 done
6504
6505 enabled zlib && add_cppflags -DZLIB_CONST
6506
6507 # conditional library dependencies, in linking order
6508 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6509 enabled afir_filter         && prepend avfilter_deps "avcodec"
6510 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6511 enabled aresample_filter    && prepend avfilter_deps "swresample"
6512 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6513 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6514 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6515 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6516 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6517 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6518 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
6519 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6520 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6521 enabled pan_filter          && prepend avfilter_deps "swresample"
6522 enabled pp_filter           && prepend avfilter_deps "postproc"
6523 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6524 enabled resample_filter && prepend avfilter_deps "avresample"
6525 enabled sab_filter          && prepend avfilter_deps "swscale"
6526 enabled scale_filter    && prepend avfilter_deps "swscale"
6527 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6528 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6529 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6530 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6531 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6532 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
6533 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6534 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6535 enabled spp_filter          && prepend avfilter_deps "avcodec"
6536 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6537 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6538 enabled zoompan_filter      && prepend avfilter_deps "swscale"
6539
6540 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6541
6542 enabled opus_decoder    && prepend avcodec_deps "swresample"
6543
6544 expand_deps(){
6545     lib_deps=${1}_deps
6546     eval "deps=\$$lib_deps"
6547     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6548     unique $lib_deps
6549 }
6550
6551 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6552 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6553
6554 map 'expand_deps $v' $LIBRARY_LIST
6555
6556 license="LGPL version 2.1 or later"
6557 if enabled nonfree; then
6558     license="nonfree and unredistributable"
6559 elif enabled gplv3; then
6560     license="GPL version 3 or later"
6561 elif enabled lgplv3; then
6562     license="LGPL version 3 or later"
6563 elif enabled gpl; then
6564     license="GPL version 2 or later"
6565 fi
6566
6567 if test "$quiet" != "yes"; then
6568
6569 echo "install prefix            $prefix"
6570 echo "source path               $source_path"
6571 echo "C compiler                $cc"
6572 echo "C library                 $libc_type"
6573 if test "$host_cc" != "$cc"; then
6574     echo "host C compiler           $host_cc"
6575     echo "host C library            $host_libc_type"
6576 fi
6577 echo "ARCH                      $arch ($cpu)"
6578 if test "$build_suffix" != ""; then
6579     echo "build suffix              $build_suffix"
6580 fi
6581 if test "$progs_suffix" != ""; then
6582     echo "progs suffix              $progs_suffix"
6583 fi
6584 if test "$extra_version" != ""; then
6585     echo "version string suffix     $extra_version"
6586 fi
6587 echo "big-endian                ${bigendian-no}"
6588 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6589 if enabled x86; then
6590     echo "${yasmexe}                      ${yasm-no}"
6591     echo "MMX enabled               ${mmx-no}"
6592     echo "MMXEXT enabled            ${mmxext-no}"
6593     echo "3DNow! enabled            ${amd3dnow-no}"
6594     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6595     echo "SSE enabled               ${sse-no}"
6596     echo "SSSE3 enabled             ${ssse3-no}"
6597     echo "AESNI enabled             ${aesni-no}"
6598     echo "AVX enabled               ${avx-no}"
6599     echo "XOP enabled               ${xop-no}"
6600     echo "FMA3 enabled              ${fma3-no}"
6601     echo "FMA4 enabled              ${fma4-no}"
6602     echo "i686 features enabled     ${i686-no}"
6603     echo "CMOV is fast              ${fast_cmov-no}"
6604     echo "EBX available             ${ebx_available-no}"
6605     echo "EBP available             ${ebp_available-no}"
6606 fi
6607 if enabled aarch64; then
6608     echo "NEON enabled              ${neon-no}"
6609     echo "VFP enabled               ${vfp-no}"
6610 fi
6611 if enabled arm; then
6612     echo "ARMv5TE enabled           ${armv5te-no}"
6613     echo "ARMv6 enabled             ${armv6-no}"
6614     echo "ARMv6T2 enabled           ${armv6t2-no}"
6615     echo "VFP enabled               ${vfp-no}"
6616     echo "NEON enabled              ${neon-no}"
6617     echo "THUMB enabled             ${thumb-no}"
6618 fi
6619 if enabled mips; then
6620     echo "MIPS FPU enabled          ${mipsfpu-no}"
6621     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6622     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6623     echo "MIPS MSA enabled          ${msa-no}"
6624     echo "LOONGSON MMI enabled      ${mmi-no}"
6625 fi
6626 if enabled ppc; then
6627     echo "AltiVec enabled           ${altivec-no}"
6628     echo "VSX enabled               ${vsx-no}"
6629     echo "POWER8 enabled            ${power8-no}"
6630     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6631     echo "dcbzl available           ${dcbzl-no}"
6632 fi
6633 echo "debug symbols             ${debug-no}"
6634 echo "strip symbols             ${stripping-no}"
6635 echo "optimize for size         ${small-no}"
6636 echo "optimizations             ${optimizations-no}"
6637 echo "static                    ${static-no}"
6638 echo "shared                    ${shared-no}"
6639 echo "postprocessing support    ${postproc-no}"
6640 echo "network support           ${network-no}"
6641 echo "threading support         ${thread_type-no}"
6642 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6643 echo "texi2html enabled         ${texi2html-no}"
6644 echo "perl enabled              ${perl-no}"
6645 echo "pod2man enabled           ${pod2man-no}"
6646 echo "makeinfo enabled          ${makeinfo-no}"
6647 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6648 test -n "$random_seed" &&
6649     echo "random seed               ${random_seed}"
6650 echo
6651
6652 echo "External libraries:"
6653 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_in_columns
6654 echo
6655
6656 echo "External libraries providing hardware acceleration:"
6657 print_enabled '' $HWACCEL_LIBRARY_LIST | print_in_columns
6658 echo
6659
6660 echo "Libraries:"
6661 print_enabled '' $LIBRARY_LIST | print_in_columns
6662 echo
6663
6664 echo "Programs:"
6665 print_enabled '' $PROGRAM_LIST | print_in_columns
6666 echo
6667
6668 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6669     echo "Enabled ${type}s:"
6670     eval list=\$$(toupper $type)_LIST
6671     print_enabled '_*' $list | print_in_columns
6672     echo
6673 done
6674
6675 if test -n "$ignore_tests"; then
6676     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
6677     echo "Ignored FATE tests:"
6678     echo $ignore_tests | print_in_columns
6679     echo
6680 fi
6681
6682 echo "License: $license"
6683
6684 echo "Creating configuration files ..."
6685
6686 fi # test "$quiet" != "yes"
6687
6688 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6689
6690 enabled stripping || strip="echo skipping strip"
6691
6692 config_files="$TMPH ffbuild/config.mak doc/config.texi"
6693
6694 cat > ffbuild/config.mak <<EOF
6695 # Automatically generated by configure - do not modify!
6696 ifndef FFMPEG_CONFIG_MAK
6697 FFMPEG_CONFIG_MAK=1
6698 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6699 prefix=$prefix
6700 LIBDIR=\$(DESTDIR)$libdir
6701 SHLIBDIR=\$(DESTDIR)$shlibdir
6702 INCDIR=\$(DESTDIR)$incdir
6703 BINDIR=\$(DESTDIR)$bindir
6704 DATADIR=\$(DESTDIR)$datadir
6705 DOCDIR=\$(DESTDIR)$docdir
6706 MANDIR=\$(DESTDIR)$mandir
6707 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6708 INSTALL_NAME_DIR=$install_name_dir
6709 SRC_PATH=$source_path
6710 SRC_LINK=$source_link
6711 ifndef MAIN_MAKEFILE
6712 SRC_PATH:=\$(SRC_PATH:.%=..%)
6713 endif
6714 CC_IDENT=$cc_ident
6715 ARCH=$arch
6716 INTRINSICS=$intrinsics
6717 CC=$cc
6718 CXX=$cxx
6719 AS=$as
6720 OBJCC=$objcc
6721 LD=$ld
6722 DEPCC=$dep_cc
6723 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6724 DEPAS=$as
6725 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6726 YASM=$yasmexe
6727 DEPYASM=$yasmexe
6728 AR=$ar
6729 ARFLAGS=$arflags
6730 AR_O=$ar_o
6731 RANLIB=$ranlib
6732 STRIP=$strip
6733 NVCC=$nvcc
6734 CP=cp -p
6735 LN_S=$ln_s
6736 CPPFLAGS=$CPPFLAGS
6737 CFLAGS=$CFLAGS
6738 CXXFLAGS=$CXXFLAGS
6739 OBJCFLAGS=$OBJCFLAGS
6740 ASFLAGS=$ASFLAGS
6741 NVCCFLAGS=$nvccflags
6742 AS_C=$AS_C
6743 AS_O=$AS_O
6744 OBJCC_C=$OBJCC_C
6745 OBJCC_E=$OBJCC_E
6746 OBJCC_O=$OBJCC_O
6747 CC_C=$CC_C
6748 CC_E=$CC_E
6749 CC_O=$CC_O
6750 CXX_C=$CXX_C
6751 CXX_O=$CXX_O
6752 NVCC_C=$NVCC_C
6753 NVCC_O=$NVCC_O
6754 LD_O=$LD_O
6755 LD_LIB=$LD_LIB
6756 LD_PATH=$LD_PATH
6757 DLLTOOL=$dlltool
6758 WINDRES=$windres
6759 DEPWINDRES=$dep_cc
6760 DOXYGEN=$doxygen
6761 LDFLAGS=$LDFLAGS
6762 LDEXEFLAGS=$LDEXEFLAGS
6763 LDLIBFLAGS=$LDLIBFLAGS
6764 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
6765 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
6766 YASMFLAGS=$YASMFLAGS
6767 BUILDSUF=$build_suffix
6768 PROGSSUF=$progs_suffix
6769 FULLNAME=$FULLNAME
6770 LIBPREF=$LIBPREF
6771 LIBSUF=$LIBSUF
6772 LIBNAME=$LIBNAME
6773 SLIBPREF=$SLIBPREF
6774 SLIBSUF=$SLIBSUF
6775 EXESUF=$EXESUF
6776 EXTRA_VERSION=$extra_version
6777 CCDEP=$CCDEP
6778 CXXDEP=$CXXDEP
6779 CCDEP_FLAGS=$CCDEP_FLAGS
6780 ASDEP=$ASDEP
6781 ASDEP_FLAGS=$ASDEP_FLAGS
6782 CC_DEPFLAGS=$CC_DEPFLAGS
6783 AS_DEPFLAGS=$AS_DEPFLAGS
6784 HOSTCC=$host_cc
6785 HOSTLD=$host_ld
6786 HOSTCFLAGS=$host_cflags
6787 HOSTCPPFLAGS=$host_cppflags
6788 HOSTEXESUF=$HOSTEXESUF
6789 HOSTLDFLAGS=$host_ldflags
6790 HOSTEXTRALIBS=$host_extralibs
6791 DEPHOSTCC=$host_cc
6792 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
6793 HOSTCCDEP=$HOSTCCDEP
6794 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
6795 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
6796 HOSTCC_C=$HOSTCC_C
6797 HOSTCC_O=$HOSTCC_O
6798 HOSTLD_O=$HOSTLD_O
6799 TARGET_EXEC=$target_exec $target_exec_args
6800 TARGET_PATH=$target_path
6801 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
6802 CFLAGS-ffplay=${sdl2_cflags}
6803 CFLAGS_HEADERS=$CFLAGS_HEADERS
6804 ZLIB=$($ldflags_filter -lz)
6805 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
6806 EXTRALIBS=$extralibs
6807 COMPAT_OBJS=$compat_objs
6808 INSTALL=$install
6809 LIBTARGET=${LIBTARGET}
6810 SLIBNAME=${SLIBNAME}
6811 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
6812 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
6813 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
6814 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
6815 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
6816 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
6817 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
6818 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
6819 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
6820 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
6821 NOREDZONE_FLAGS=$noredzone_flags
6822 LIBFUZZER_PATH=$libfuzzer_path
6823 IGNORE_TESTS=$ignore_tests
6824 EOF
6825
6826 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
6827
6828 print_program_extralibs(){
6829     eval "program_extralibs=\$${1}_extralibs"
6830     eval echo "EXTRALIBS-${1}=${program_extralibs}" >> ffbuild/config.mak
6831 }
6832
6833 map 'print_program_extralibs $v' $PROGRAM_LIST
6834
6835 cat > $TMPH <<EOF
6836 /* Automatically generated by configure - do not modify! */
6837 #ifndef FFMPEG_CONFIG_H
6838 #define FFMPEG_CONFIG_H
6839 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
6840 #define FFMPEG_LICENSE "$(c_escape $license)"
6841 #define CONFIG_THIS_YEAR 2017
6842 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
6843 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
6844 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
6845 #define av_restrict $_restrict
6846 #define EXTERN_PREFIX "${extern_prefix}"
6847 #define EXTERN_ASM ${extern_prefix}
6848 #define BUILDSUF "$build_suffix"
6849 #define SLIBSUF "$SLIBSUF"
6850 #define HAVE_MMX2 HAVE_MMXEXT
6851 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
6852 EOF
6853
6854 test -n "$assert_level" &&
6855     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
6856
6857 test -n "$malloc_prefix" &&
6858     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
6859
6860 if enabled yasm; then
6861     append config_files $TMPASM
6862     printf '' >$TMPASM
6863 fi
6864
6865 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
6866
6867
6868 mkdir -p doc
6869 mkdir -p tests
6870 mkdir -p tests/api
6871 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
6872
6873 print_config ARCH_   "$config_files" $ARCH_LIST
6874 print_config HAVE_   "$config_files" $HAVE_LIST
6875 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
6876                                      $CONFIG_EXTRA      \
6877                                      $ALL_COMPONENTS    \
6878
6879 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
6880 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
6881
6882 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
6883 cp_if_changed $TMPH config.h
6884 touch ffbuild/.config
6885
6886 enabled yasm && cp_if_changed $TMPASM config.asm
6887
6888 cat > $TMPH <<EOF
6889 /* Generated by ffconf */
6890 #ifndef AVUTIL_AVCONFIG_H
6891 #define AVUTIL_AVCONFIG_H
6892 EOF
6893
6894 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
6895
6896 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
6897
6898 cp_if_changed $TMPH libavutil/avconfig.h
6899
6900 # generate the lists of enabled components
6901 print_enabled_components(){
6902     file=$1
6903     struct_name=$2
6904     name=$3
6905     shift 3
6906     echo "static const $struct_name *$name[] = {" > $TMPH
6907     for c in $*; do
6908         enabled $c && printf "    &ff_%s,\n" $c >> $TMPH
6909     done
6910     echo "    NULL };" >> $TMPH
6911     cp_if_changed $TMPH $file
6912 }
6913
6914 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
6915 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
6916
6917 if test -n "$WARNINGS"; then
6918     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
6919     enabled fatal_warnings && exit 1
6920 fi
6921
6922 # Settings for pkg-config files
6923
6924 cat > ffbuild/config.sh <<EOF
6925 # Automatically generated by configure - do not modify!
6926 shared=$shared
6927 build_suffix=$build_suffix
6928 prefix=$prefix
6929 libdir=$libdir
6930 incdir=$incdir
6931 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
6932 source_path=${source_path}
6933 LIBPREF=${LIBPREF}
6934 LIBSUF=${LIBSUF}
6935
6936 extralibs_avutil="$LIBRT $LIBM"
6937 extralibs_avcodec="$extralibs"
6938 extralibs_avformat="$extralibs"
6939 extralibs_avdevice="$extralibs"
6940 extralibs_avfilter="$extralibs"
6941 extralibs_avresample="$LIBM"
6942 extralibs_postproc=""
6943 extralibs_swscale="$LIBM"
6944 extralibs_swresample="$LIBM $LIBSOXR"
6945 EOF
6946
6947 for lib in $LIBRARY_LIST; do
6948     lib_deps="$(eval echo \$${lib}_deps)"
6949     echo ${lib}_deps=\"$lib_deps\" >> ffbuild/config.sh
6950 done