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-libnut          enable NUT (de)muxing via libnut,
 238                            native (de)muxer exists [no]
 239   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 240   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 241   --enable-libopencv       enable video filtering via libopencv [no]
 242   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 243   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 244   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
 245   --enable-libopus         enable Opus de/encoding via libopus [no]
 246   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 247   --enable-librsvg         enable SVG rasterization via librsvg [no]
 248   --enable-librubberband   enable rubberband needed for rubberband filter [no]
 249   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 250   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
 251   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 252   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 253   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
 254   --enable-libsoxr         enable Include libsoxr resampling [no]
 255   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 256   --enable-libssh          enable SFTP protocol via libssh [no]
 257   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
 258   --enable-libtheora       enable Theora encoding via libtheora [no]
 259   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 260   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 261   --enable-libvidstab      enable video stabilization using vid.stab [no]
 262   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 263   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 264                            native implementation exists [no]
 265   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 266   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 267   --enable-libwebp         enable WebP encoding via libwebp [no]
 268   --enable-libx264         enable H.264 encoding via x264 [no]
 269   --enable-libx265         enable HEVC encoding via x265 [no]
 270   --enable-libxavs         enable AVS encoding via xavs [no]
 271   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
 272   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
 273   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
 274   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
 275   --enable-libxvid         enable Xvid encoding via xvidcore,
 276                            native MPEG-4/Xvid encoder exists [no]
 277   --enable-libzimg         enable z.lib, needed for zscale filter [no]
 278   --enable-libzmq          enable message passing via libzmq [no]
 279   --enable-libzvbi         enable teletext support via libzvbi [no]
 280   --disable-lzma           disable lzma [autodetect]
 281   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
 282   --enable-mediacodec      enable Android MediaCodec support [no]
 283   --enable-netcdf          enable NetCDF, needed for sofalizer filter [no]
 284   --enable-openal          enable OpenAL 1.1 capture support [no]
 285   --enable-opencl          enable OpenCL code
 286   --enable-opengl          enable OpenGL rendering [no]
 287   --enable-openssl         enable openssl, needed for https support
 288                            if gnutls is not used [no]
 289   --disable-schannel       disable SChannel SSP, needed for TLS support on
 290                            Windows if openssl and gnutls are not used [autodetect]
 291   --disable-sdl2           disable sdl2 [autodetect]
 292   --disable-securetransport disable Secure Transport, needed for TLS support
 293                            on OSX if openssl and gnutls are not used [autodetect]
 294   --disable-xlib           disable xlib [autodetect]
 295   --disable-zlib           disable zlib [autodetect]
 296
 297   The following libraries provide various hardware acceleration features:
 298   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
 299   --disable-cuda           disable dynamically linked Nvidia CUDA code [autodetect]
 300   --enable-cuda-sdk        enable CUDA features that require the CUDA SDK [no]
 301   --disable-cuvid          disable Nvidia CUVID support [autodetect]
 302   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
 303   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
 304   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
 305   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
 306   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
 307   --disable-nvenc          disable Nvidia video encoding code [autodetect]
 308   --enable-omx             enable OpenMAX IL code [no]
 309   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
 310   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
 311   --disable-vda            disable Apple Video Decode Acceleration code [autodetect]
 312   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
 313   --disable-videotoolbox   disable VideoToolbox code [autodetect]
 314
 315 Toolchain options:
 316   --arch=ARCH              select architecture [$arch]
 317   --cpu=CPU                select the minimum required CPU (affects
 318                            instruction selection, may crash on older CPUs)
 319   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 320   --progs-suffix=SUFFIX    program name suffix []
 321   --enable-cross-compile   assume a cross-compiler is used
 322   --sysroot=PATH           root of cross-build tree
 323   --sysinclude=PATH        location of cross-build system headers
 324   --target-os=OS           compiler targets OS [$target_os]
 325   --target-exec=CMD        command to run executables on target
 326   --target-path=DIR        path to view of build directory on target
 327   --target-samples=DIR     path to samples directory on target
 328   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 329   --toolchain=NAME         set tool defaults according to NAME
 330   --nm=NM                  use nm tool NM [$nm_default]
 331   --ar=AR                  use archive tool AR [$ar_default]
 332   --as=AS                  use assembler AS [$as_default]
 333   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
 334   --strip=STRIP            use strip tool STRIP [$strip_default]
 335   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 336   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
 337   --cc=CC                  use C compiler CC [$cc_default]
 338   --cxx=CXX                use C compiler CXX [$cxx_default]
 339   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 340   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 341   --nvcc=NVCC              use Nvidia CUDA compiler NVCC [$nvcc_default]
 342   --ld=LD                  use linker LD [$ld_default]
 343   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 344   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 345   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 346   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 347   --host-cc=HOSTCC         use host C compiler HOSTCC
 348   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 349   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 350   --host-ld=HOSTLD         use host linker HOSTLD
 351   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 352   --host-libs=HLIBS        use libs HLIBS when linking for host
 353   --host-os=OS             compiler host OS [$target_os]
 354   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 355   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 356   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 357   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 358   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 359   --extra-ldlibflags=ELDFLAGS add ELDFLAGS to LDLIBFLAGS [$LDLIBFLAGS]
 360   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 361   --extra-version=STRING   version string suffix []
 362   --optflags=OPTFLAGS      override optimization-related compiler flags
 363   --nvccflags=NVCCFLAGS    override nvcc flags [$nvccflags_default]
 364   --build-suffix=SUFFIX    library name suffix []
 365   --enable-pic             build position-independent code
 366   --enable-thumb           compile for Thumb instruction set
 367   --enable-lto             use link-time optimization
 368   --env="ENV=override"     override the environment variables
 369
 370 Advanced options (experts only):
 371   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 372   --custom-allocator=NAME  use a supported custom allocator
 373   --disable-symver         disable symbol versioning
 374   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 375   --disable-safe-bitstream-reader
 376                            disable buffer boundary checking in bitreaders
 377                            (faster, but may crash)
 378   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 379
 380 Optimization options (experts only):
 381   --disable-asm            disable all assembly optimizations
 382   --disable-altivec        disable AltiVec optimizations
 383   --disable-vsx            disable VSX optimizations
 384   --disable-power8         disable POWER8 optimizations
 385   --disable-amd3dnow       disable 3DNow! optimizations
 386   --disable-amd3dnowext    disable 3DNow! extended optimizations
 387   --disable-mmx            disable MMX optimizations
 388   --disable-mmxext         disable MMXEXT optimizations
 389   --disable-sse            disable SSE optimizations
 390   --disable-sse2           disable SSE2 optimizations
 391   --disable-sse3           disable SSE3 optimizations
 392   --disable-ssse3          disable SSSE3 optimizations
 393   --disable-sse4           disable SSE4 optimizations
 394   --disable-sse42          disable SSE4.2 optimizations
 395   --disable-avx            disable AVX optimizations
 396   --disable-xop            disable XOP optimizations
 397   --disable-fma3           disable FMA3 optimizations
 398   --disable-fma4           disable FMA4 optimizations
 399   --disable-avx2           disable AVX2 optimizations
 400   --disable-aesni          disable AESNI optimizations
 401   --disable-armv5te        disable armv5te optimizations
 402   --disable-armv6          disable armv6 optimizations
 403   --disable-armv6t2        disable armv6t2 optimizations
 404   --disable-vfp            disable VFP optimizations
 405   --disable-neon           disable NEON optimizations
 406   --disable-inline-asm     disable use of inline assembly
 407   --disable-yasm           disable use of nasm/yasm assembly
 408   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
 409   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 410   --disable-msa            disable MSA optimizations
 411   --disable-mipsfpu        disable floating point MIPS optimizations
 412   --disable-mmi            disable Loongson SIMD optimizations
 413   --disable-fast-unaligned consider unaligned accesses slow
 414
 415 Developer options (useful when working on FFmpeg itself):
 416   --disable-debug          disable debugging symbols
 417   --enable-debug=LEVEL     set the debug level [$debuglevel]
 418   --disable-optimizations  disable compiler optimizations
 419   --enable-extra-warnings  enable more compiler warnings
 420   --disable-stripping      disable stripping of executables and shared libraries
 421   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 422                            2 causes a slowdown at runtime.
 423   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 424   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 425                            leaks and errors, using the specified valgrind binary.
 426                            Cannot be combined with --target-exec
 427   --enable-ftrapv          Trap arithmetic overflows
 428   --samples=PATH           location of test samples for FATE, if not set use
 429                            \$FATE_SAMPLES at make invocation time.
 430   --enable-neon-clobber-test check NEON registers for clobbering (should be
 431                            used only for debugging purposes)
 432   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 433                            should be used only for debugging purposes)
 434   --enable-random          randomly enable/disable components
 435   --disable-random
 436   --enable-random=LIST     randomly enable/disable specific components or
 437   --disable-random=LIST    component groups. LIST is a comma-separated list
 438                            of NAME[:PROB] entries where NAME is a component
 439                            (group) and PROB the probability associated with
 440                            NAME (default 0.5).
 441   --random-seed=VALUE      seed value for --enable/disable-random
 442   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 443                            (only applies to --disable-optimizations builds)
 444   --enable-osfuzz          Enable building fuzzer tool
 445   --libfuzzer=PATH         path to libfuzzer
 446   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
 447                            in the name) of tests whose result is ignored
 448
 449 NOTE: Object files are built at the place where configure is launched.
 450 EOF
 451   exit 0
 452 }
 453
 454 quotes='""'
 455 if test -t 1 && which tput >/dev/null 2>&1; then
 456     ncolors=$(tput colors)
 457     if test -n "$ncolors" && test $ncolors -ge 8; then
 458         bold_color=$(tput bold)
 459         warn_color=$(tput setaf 3)
 460         error_color=$(tput setaf 1)
 461         reset_color=$(tput sgr0)
 462     fi
 463     # 72 used instead of 80 since that's the default of pr
 464     ncols=$(tput cols)
 465 fi
 466 : ${ncols:=72}
 467
 468 log(){
 469     echo "$@" >> $logfile
 470 }
 471
 472 log_file(){
 473     log BEGIN $1
 474     pr -n -t $1 >> $logfile
 475     log END $1
 476 }
 477
 478 warn(){
 479     log "WARNING: $*"
 480     WARNINGS="${WARNINGS}WARNING: $*\n"
 481 }
 482
 483 die(){
 484     log "$@"
 485     echo "$error_color$bold_color$@$reset_color"
 486     cat <<EOF
 487
 488 If you think configure made a mistake, make sure you are using the latest
 489 version from Git.  If the latest version fails, report the problem to the
 490 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 491 EOF
 492     if disabled logging; then
 493         cat <<EOF
 494 Rerun configure with logging enabled (do not use --disable-logging), and
 495 include the log this produces with your report.
 496 EOF
 497     else
 498         cat <<EOF
 499 Include the log file "$logfile" produced by configure as this will help
 500 solve the problem.
 501 EOF
 502     fi
 503     exit 1
 504 }
 505
 506 # Avoid locale weirdness, besides we really just want to translate ASCII.
 507 toupper(){
 508     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 509 }
 510
 511 tolower(){
 512     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 513 }
 514
 515 c_escape(){
 516     echo "$*" | sed 's/["\\]/\\\0/g'
 517 }
 518
 519 sh_quote(){
 520     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 521     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 522     echo "$v"
 523 }
 524
 525 cleanws(){
 526     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 527 }
 528
 529 filter(){
 530     pat=$1
 531     shift
 532     for v; do
 533         eval "case $v in $pat) printf '%s ' $v ;; esac"
 534     done
 535 }
 536
 537 filter_out(){
 538     pat=$1
 539     shift
 540     for v; do
 541         eval "case $v in $pat) ;; *) printf '%s ' $v ;; esac"
 542     done
 543 }
 544
 545 map(){
 546     m=$1
 547     shift
 548     for v; do eval $m; done
 549 }
 550
 551 add_suffix(){
 552     suffix=$1
 553     shift
 554     for v; do echo ${v}${suffix}; done
 555 }
 556
 557 set_all(){
 558     value=$1
 559     shift
 560     for var in $*; do
 561         eval $var=$value
 562     done
 563 }
 564
 565 set_weak(){
 566     value=$1
 567     shift
 568     for var; do
 569         eval : \${$var:=$value}
 570     done
 571 }
 572
 573 sanitize_var_name(){
 574     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 575 }
 576
 577 set_safe(){
 578     var=$1
 579     shift
 580     eval $(sanitize_var_name "$var")='$*'
 581 }
 582
 583 get_safe(){
 584     eval echo \$$(sanitize_var_name "$1")
 585 }
 586
 587 pushvar(){
 588     for pvar in $*; do
 589         eval level=\${${pvar}_level:=0}
 590         eval ${pvar}_${level}="\$$pvar"
 591         eval ${pvar}_level=$(($level+1))
 592     done
 593 }
 594
 595 popvar(){
 596     for pvar in $*; do
 597         eval level=\${${pvar}_level:-0}
 598         test $level = 0 && continue
 599         eval level=$(($level-1))
 600         eval $pvar="\${${pvar}_${level}}"
 601         eval ${pvar}_level=$level
 602         eval unset ${pvar}_${level}
 603     done
 604 }
 605
 606 request(){
 607     for var in $*; do
 608         eval ${var}_requested=yes
 609         eval $var=
 610     done
 611 }
 612
 613 enable(){
 614     set_all yes $*
 615 }
 616
 617 disable(){
 618     set_all no $*
 619 }
 620
 621 enable_weak(){
 622     set_weak yes $*
 623 }
 624
 625 disable_weak(){
 626     set_weak no $*
 627 }
 628
 629 enable_safe(){
 630     for var; do
 631         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 632     done
 633 }
 634
 635 disable_safe(){
 636     for var; do
 637         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 638     done
 639 }
 640
 641 do_enable_deep(){
 642     for var; do
 643         enabled $var && continue
 644         eval sel="\$${var}_select"
 645         eval sgs="\$${var}_suggest"
 646         pushvar var sgs
 647         enable_deep $sel
 648         popvar sgs
 649         enable_deep_weak $sgs
 650         popvar var
 651     done
 652 }
 653
 654 enable_deep(){
 655     do_enable_deep $*
 656     enable $*
 657 }
 658
 659 enable_deep_weak(){
 660     for var; do
 661         disabled $var && continue
 662         pushvar var
 663         do_enable_deep $var
 664         popvar var
 665         enable_weak $var
 666     done
 667 }
 668
 669 requested(){
 670     test "${1#!}" = "$1" && op='=' || op=!=
 671     eval test "x\$${1#!}_requested" $op "xyes"
 672 }
 673
 674 enabled(){
 675     test "${1#!}" = "$1" && op='=' || op=!=
 676     eval test "x\$${1#!}" $op "xyes"
 677 }
 678
 679 disabled(){
 680     test "${1#!}" = "$1" && op='=' || op=!=
 681     eval test "x\$${1#!}" $op "xno"
 682 }
 683
 684 enabled_all(){
 685     for opt; do
 686         enabled $opt || return 1
 687     done
 688 }
 689
 690 disabled_all(){
 691     for opt; do
 692         disabled $opt || return 1
 693     done
 694 }
 695
 696 enabled_any(){
 697     for opt; do
 698         enabled $opt && return 0
 699     done
 700 }
 701
 702 disabled_any(){
 703     for opt; do
 704         disabled $opt && return 0
 705     done
 706     return 1
 707 }
 708
 709 set_default(){
 710     for opt; do
 711         eval : \${$opt:=\$${opt}_default}
 712     done
 713 }
 714
 715 is_in(){
 716     value=$1
 717     shift
 718     for var in $*; do
 719         [ $var = $value ] && return 0
 720     done
 721     return 1
 722 }
 723
 724 do_check_deps(){
 725     for cfg; do
 726         cfg="${cfg#!}"
 727         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 728         disabled ${cfg}_checking && continue
 729         enable ${cfg}_checking
 730         append allopts $cfg
 731
 732         eval dep_all="\$${cfg}_deps"
 733         eval dep_any="\$${cfg}_deps_any"
 734         eval dep_sel="\$${cfg}_select"
 735         eval dep_sgs="\$${cfg}_suggest"
 736         eval dep_ifa="\$${cfg}_if"
 737         eval dep_ifn="\$${cfg}_if_any"
 738
 739         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 740         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
 741         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 742
 743         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 744         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 745         enabled_all  $dep_all || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not all dependencies are satisfied: $dep_all"; }
 746         enabled_any  $dep_any || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not any dependency is satisfied: $dep_any"; }
 747         disabled_any $dep_sel && { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some selected dependency is unsatisfied: $dep_sel"; }
 748
 749         if enabled $cfg; then
 750             enable_deep $dep_sel
 751             enable_deep_weak $dep_sgs
 752         fi
 753
 754         disable ${cfg}_checking
 755     done
 756 }
 757
 758 check_deps(){
 759     unset allopts
 760
 761     do_check_deps "$@"
 762
 763     for cfg in $allopts; do
 764         enabled $cfg || continue
 765         eval dep_extralibs="\$${cfg}_extralibs"
 766         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
 767     done
 768 }
 769
 770 print_config(){
 771     pfx=$1
 772     files=$2
 773     shift 2
 774     map 'eval echo "$v \${$v:-no}"' "$@" |
 775     awk "BEGIN { split(\"$files\", files) }
 776         {
 777             c = \"$pfx\" toupper(\$1);
 778             v = \$2;
 779             sub(/yes/, 1, v);
 780             sub(/no/,  0, v);
 781             for (f in files) {
 782                 file = files[f];
 783                 if (file ~ /\\.h\$/) {
 784                     printf(\"#define %s %d\\n\", c, v) >>file;
 785                 } else if (file ~ /\\.asm\$/) {
 786                     printf(\"%%define %s %d\\n\", c, v) >>file;
 787                 } else if (file ~ /\\.mak\$/) {
 788                     n = -v ? \"\" : \"!\";
 789                     printf(\"%s%s=yes\\n\", n, c) >>file;
 790                 } else if (file ~ /\\.texi\$/) {
 791                     pre = -v ? \"\" : \"@c \";
 792                     yesno = \$2;
 793                     c2 = tolower(c);
 794                     gsub(/_/, \"-\", c2);
 795                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 796                 }
 797             }
 798         }"
 799 }
 800
 801 print_enabled(){
 802     suf=$1
 803     shift
 804     for v; do
 805         enabled $v && printf "%s\n" ${v%$suf}
 806     done
 807 }
 808
 809 append(){
 810     var=$1
 811     shift
 812     eval "$var=\"\$$var $*\""
 813 }
 814
 815 prepend(){
 816     var=$1
 817     shift
 818     eval "$var=\"$* \$$var\""
 819 }
 820
 821 unique(){
 822     var=$1
 823     uniq_list=""
 824     for tok in $(eval echo \$$var); do
 825         uniq_list="$(filter_out $tok $uniq_list) $tok"
 826     done
 827     eval "$var=\"${uniq_list}\""
 828 }
 829
 830 add_cppflags(){
 831     append CPPFLAGS "$@"
 832 }
 833
 834 add_cflags(){
 835     append CFLAGS $($cflags_filter "$@")
 836 }
 837
 838 add_cflags_headers(){
 839     append CFLAGS_HEADERS $($cflags_filter "$@")
 840 }
 841
 842 add_cxxflags(){
 843     append CXXFLAGS $($cflags_filter "$@")
 844 }
 845
 846 add_asflags(){
 847     append ASFLAGS $($asflags_filter "$@")
 848 }
 849
 850 add_objcflags(){
 851     append OBJCFLAGS $($objcflags_filter "$@")
 852 }
 853
 854 add_ldflags(){
 855     append LDFLAGS $($ldflags_filter "$@")
 856 }
 857
 858 add_ldexeflags(){
 859     append LDEXEFLAGS $($ldflags_filter "$@")
 860 }
 861
 862 add_ldlibflags(){
 863     append LDLIBFLAGS $($ldflags_filter "$@")
 864 }
 865
 866 add_stripflags(){
 867     append ASMSTRIPFLAGS "$@"
 868 }
 869
 870 add_extralibs(){
 871     prepend extralibs $($ldflags_filter "$@")
 872 }
 873
 874 add_host_cppflags(){
 875     append host_cppflags "$@"
 876 }
 877
 878 add_host_cflags(){
 879     append host_cflags $($host_cflags_filter "$@")
 880 }
 881
 882 add_host_ldflags(){
 883     append host_ldflags $($host_ldflags_filter "$@")
 884 }
 885
 886 add_compat(){
 887     append compat_objs $1
 888     shift
 889     map 'add_cppflags -D$v' "$@"
 890 }
 891
 892 check_cmd(){
 893     log "$@"
 894     "$@" >> $logfile 2>&1
 895 }
 896
 897 check_stat(){
 898     log check_stat "$@"
 899     stat "$1" >> $logfile 2>&1
 900 }
 901
 902 cc_o(){
 903     eval printf '%s\\n' $CC_O
 904 }
 905
 906 cc_e(){
 907     eval printf '%s\\n' $CC_E
 908 }
 909
 910 check_cc(){
 911     log check_cc "$@"
 912     cat > $TMPC
 913     log_file $TMPC
 914     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 915 }
 916
 917 check_cxx(){
 918     log check_cxx "$@"
 919     cat > $TMPCPP
 920     log_file $TMPCPP
 921     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 922 }
 923
 924 check_objcc(){
 925     log check_objcc "$@"
 926     cat > $TMPM
 927     log_file $TMPM
 928     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
 929 }
 930
 931 check_cpp(){
 932     log check_cpp "$@"
 933     cat > $TMPC
 934     log_file $TMPC
 935     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 936 }
 937
 938 as_o(){
 939     eval printf '%s\\n' $AS_O
 940 }
 941
 942 check_as(){
 943     log check_as "$@"
 944     cat > $TMPS
 945     log_file $TMPS
 946     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 947 }
 948
 949 check_inline_asm(){
 950     log check_inline_asm "$@"
 951     name="$1"
 952     code="$2"
 953     shift 2
 954     disable $name
 955     check_cc "$@" <<EOF && enable $name
 956 void foo(void){ __asm__ volatile($code); }
 957 EOF
 958 }
 959
 960 check_inline_asm_flags(){
 961     log check_inline_asm_flags "$@"
 962     name="$1"
 963     code="$2"
 964     flags=''
 965     shift 2
 966     while [ "$1" != "" ]; do
 967       append flags $1
 968       shift
 969     done;
 970     disable $name
 971     cat > $TMPC <<EOF
 972 void foo(void){ __asm__ volatile($code); }
 973 EOF
 974     log_file $TMPC
 975     check_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
 976     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
 977 }
 978
 979 check_insn(){
 980     log check_insn "$@"
 981     check_inline_asm ${1}_inline "\"$2\""
 982     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 983 }
 984
 985 check_yasm(){
 986     log check_yasm "$@"
 987     echo "$1" > $TMPS
 988     log_file $TMPS
 989     shift 1
 990     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
 991 }
 992
 993 ld_o(){
 994     eval printf '%s\\n' $LD_O
 995 }
 996
 997 check_ld(){
 998     log check_ld "$@"
 999     type=$1
1000     shift 1
1001     flags=$(filter_out '-l*|*.so' $@)
1002     libs=$(filter '-l*|*.so' $@)
1003     check_$type $($cflags_filter $flags) || return
1004     flags=$($ldflags_filter $flags)
1005     libs=$($ldflags_filter $libs)
1006     check_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1007 }
1008
1009 print_include(){
1010     hdr=$1
1011     test "${hdr%.h}" = "${hdr}" &&
1012         echo "#include $hdr"    ||
1013         echo "#include <$hdr>"
1014 }
1015
1016 check_code(){
1017     log check_code "$@"
1018     check=$1
1019     headers=$2
1020     code=$3
1021     shift 3
1022     {
1023         for hdr in $headers; do
1024             print_include $hdr
1025         done
1026         echo "int main(void) { $code; return 0; }"
1027     } | check_$check "$@"
1028 }
1029
1030 check_cppflags(){
1031     log check_cppflags "$@"
1032     check_cpp "$@" <<EOF && append CPPFLAGS "$@"
1033 int x;
1034 EOF
1035 }
1036
1037 test_cflags(){
1038     log test_cflags "$@"
1039     set -- $($cflags_filter "$@")
1040     check_cc "$@" <<EOF
1041 int x;
1042 EOF
1043 }
1044
1045 check_cflags(){
1046     log check_cflags "$@"
1047     test_cflags "$@" && add_cflags "$@"
1048 }
1049
1050 check_cxxflags(){
1051     log check_cxxflags "$@"
1052     set -- $($cflags_filter "$@")
1053     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
1054 int x;
1055 EOF
1056 }
1057
1058 test_objcflags(){
1059     log test_objcflags "$@"
1060     set -- $($objcflags_filter "$@")
1061     check_objcc "$@" <<EOF
1062 int x;
1063 EOF
1064 }
1065
1066 check_objcflags(){
1067     log check_objcflags "$@"
1068     test_objcflags "$@" && add_objcflags "$@"
1069 }
1070
1071 test_ldflags(){
1072     log test_ldflags "$@"
1073     check_ld "cc" "$@" <<EOF
1074 int main(void){ return 0; }
1075 EOF
1076 }
1077
1078 check_ldflags(){
1079     log check_ldflags "$@"
1080     test_ldflags "$@" && add_ldflags "$@"
1081 }
1082
1083 test_stripflags(){
1084     log test_stripflags "$@"
1085     # call check_cc to get a fresh TMPO
1086     check_cc <<EOF
1087 int main(void) { return 0; }
1088 EOF
1089     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1090 }
1091
1092 check_stripflags(){
1093     log check_stripflags "$@"
1094     test_stripflags "$@" && add_stripflags "$@"
1095 }
1096
1097 check_header(){
1098     log check_header "$@"
1099     header=$1
1100     shift
1101     disable_safe $header
1102     check_cpp "$@" <<EOF && enable_safe $header
1103 #include <$header>
1104 int x;
1105 EOF
1106 }
1107
1108 check_header_objcc(){
1109     log check_header_objcc "$@"
1110     rm -f -- "$TMPO"
1111     header=$1
1112     shift
1113     disable_safe $header
1114     {
1115        echo "#include <$header>"
1116        echo "int main(void) { return 0; }"
1117     } | check_objcc && check_stat "$TMPO" && enable_safe $headers
1118 }
1119
1120 check_func(){
1121     log check_func "$@"
1122     func=$1
1123     shift
1124     disable $func
1125     check_ld "cc" "$@" <<EOF && enable $func
1126 extern int $func();
1127 int main(void){ $func(); }
1128 EOF
1129 }
1130
1131 check_complexfunc(){
1132     log check_complexfunc "$@"
1133     func=$1
1134     narg=$2
1135     shift 2
1136     test $narg = 2 && args="f, g" || args="f * I"
1137     disable $func
1138     check_ld "cc" "$@" <<EOF && enable $func
1139 #include <complex.h>
1140 #include <math.h>
1141 float foo(complex float f, complex float g) { return $func($args); }
1142 int main(void){ return (int) foo; }
1143 EOF
1144 }
1145
1146 check_mathfunc(){
1147     log check_mathfunc "$@"
1148     func=$1
1149     narg=$2
1150     shift 2
1151     test $narg = 2 && args="f, g" || args="f"
1152     disable $func
1153     check_ld "cc" "$@" <<EOF && enable $func
1154 #include <math.h>
1155 float foo(float f, float g) { return $func($args); }
1156 int main(void){ return (int) foo; }
1157 EOF
1158 }
1159
1160 check_func_headers(){
1161     log check_func_headers "$@"
1162     headers=$1
1163     funcs=$2
1164     shift 2
1165     {
1166         for hdr in $headers; do
1167             print_include $hdr
1168         done
1169         echo "#include <stdint.h>"
1170         for func in $funcs; do
1171             echo "long check_$func(void) { return (long) $func; }"
1172         done
1173         echo "int main(void) { int ret = 0;"
1174         # LTO could optimize out the test functions without this
1175         for func in $funcs; do
1176             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1177         done
1178         echo "return ret; }"
1179     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1180 }
1181
1182 check_class_headers_cpp(){
1183     log check_class_headers_cpp "$@"
1184     headers=$1
1185     classes=$2
1186     shift 2
1187     {
1188         for hdr in $headers; do
1189             echo "#include <$hdr>"
1190         done
1191         echo "int main(void) { "
1192         i=1
1193         for class in $classes; do
1194             echo "$class obj$i;"
1195             i=$(expr $i + 1)
1196         done
1197         echo "return 0; }"
1198     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1199 }
1200
1201 check_cpp_condition(){
1202     log check_cpp_condition "$@"
1203     header=$1
1204     condition=$2
1205     shift 2
1206     check_cpp "$@" <<EOF
1207 #include <$header>
1208 #if !($condition)
1209 #error "unsatisfied condition: $condition"
1210 #endif
1211 EOF
1212 }
1213
1214 test_cflags_cc(){
1215     log test_cflags_cc "$@"
1216     flags=$1
1217     header=$2
1218     condition=$3
1219     shift 3
1220     set -- $($cflags_filter "$flags")
1221     check_cc "$@" <<EOF
1222 #include <$header>
1223 #if !($condition)
1224 #error "unsatisfied condition: $condition"
1225 #endif
1226 EOF
1227 }
1228
1229 check_lib(){
1230     log check_lib "$@"
1231     name="$1"
1232     headers="$2"
1233     funcs="$3"
1234     shift 3
1235     disable $name
1236     check_func_headers "$headers" "$funcs" "$@" &&
1237         enable $name && add_extralibs "$@"
1238 }
1239
1240 check_lib_cpp(){
1241     log check_lib_cpp "$@"
1242     headers="$1"
1243     classes="$2"
1244     shift 2
1245     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1246 }
1247
1248 check_pkg_config(){
1249     log check_pkg_config "$@"
1250     pkg_version="$1"
1251     pkg="${1%% *}"
1252     headers="$2"
1253     funcs="$3"
1254     shift 3
1255     check_cmd $pkg_config --exists --print-errors $pkg_version || return
1256     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1257     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1258     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1259         set_safe "${pkg}_cflags"    $pkg_cflags &&
1260         set_safe "${pkg}_extralibs" $pkg_libs
1261 }
1262
1263 check_exec(){
1264     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1265 }
1266
1267 check_exec_crash(){
1268     log check_exec_crash "$@"
1269     code=$(cat)
1270
1271     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1272     # are safe but may not be available everywhere.  Thus we use
1273     # raise(SIGTERM) instead.  The check is run in a subshell so we
1274     # can redirect the "Terminated" message from the shell.  SIGBUS
1275     # is not defined by standard C so it is used conditionally.
1276
1277     (check_exec "$@") >> $logfile 2>&1 <<EOF
1278 #include <signal.h>
1279 static void sighandler(int sig){
1280     raise(SIGTERM);
1281 }
1282 int foo(void){
1283     $code
1284 }
1285 int (*func_ptr)(void) = foo;
1286 int main(void){
1287     signal(SIGILL, sighandler);
1288     signal(SIGFPE, sighandler);
1289     signal(SIGSEGV, sighandler);
1290 #ifdef SIGBUS
1291     signal(SIGBUS, sighandler);
1292 #endif
1293     return func_ptr();
1294 }
1295 EOF
1296 }
1297
1298 check_type(){
1299     log check_type "$@"
1300     headers=$1
1301     type=$2
1302     shift 2
1303     disable_safe "$type"
1304     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1305 }
1306
1307 check_struct(){
1308     log check_struct "$@"
1309     headers=$1
1310     struct=$2
1311     member=$3
1312     shift 3
1313     disable_safe "${struct}_${member}"
1314     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1315         enable_safe "${struct}_${member}"
1316 }
1317
1318 check_builtin(){
1319     log check_builtin "$@"
1320     name=$1
1321     headers=$2
1322     builtin=$3
1323     shift 3
1324     disable "$name"
1325     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1326 }
1327
1328 check_compile_assert(){
1329     log check_compile_assert "$@"
1330     name=$1
1331     headers=$2
1332     condition=$3
1333     shift 3
1334     disable "$name"
1335     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1336 }
1337
1338 require(){
1339     log require "$@"
1340     name_version="$1"
1341     name="${1%% *}"
1342     headers="$2"
1343     func="$3"
1344     shift 3
1345     check_lib $name "$headers" $func "$@" || die "ERROR: $name_version not found"
1346 }
1347
1348 require_cpp(){
1349     name="$1"
1350     headers="$2"
1351     classes="$3"
1352     shift 3
1353     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1354 }
1355
1356 use_pkg_config(){
1357     log use_pkg_config "$@"
1358     pkg="$1"
1359     check_pkg_config "$@" || return 1
1360     add_cflags    $(get_safe "${pkg}_cflags")
1361     add_extralibs $(get_safe "${pkg}_extralibs")
1362 }
1363
1364 require_pkg_config(){
1365     use_pkg_config "$@" || die "ERROR: $pkg not found using pkg-config$pkg_config_fail_message"
1366 }
1367
1368 hostcc_e(){
1369     eval printf '%s\\n' $HOSTCC_E
1370 }
1371
1372 hostcc_o(){
1373     eval printf '%s\\n' $HOSTCC_O
1374 }
1375
1376 check_host_cc(){
1377     log check_host_cc "$@"
1378     cat > $TMPC
1379     log_file $TMPC
1380     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1381 }
1382
1383 check_host_cpp(){
1384     log check_host_cpp "$@"
1385     cat > $TMPC
1386     log_file $TMPC
1387     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1388 }
1389
1390 check_host_cppflags(){
1391     log check_host_cppflags "$@"
1392     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1393 int x;
1394 EOF
1395 }
1396
1397 check_host_cflags(){
1398     log check_host_cflags "$@"
1399     set -- $($host_cflags_filter "$@")
1400     check_host_cc "$@" <<EOF && append host_cflags "$@"
1401 int x;
1402 EOF
1403 }
1404
1405 check_host_cpp_condition(){
1406     log check_host_cpp_condition "$@"
1407     header=$1
1408     condition=$2
1409     shift 2
1410     check_host_cpp "$@" <<EOF
1411 #include <$header>
1412 #if !($condition)
1413 #error "unsatisfied condition: $condition"
1414 #endif
1415 EOF
1416 }
1417
1418 cp_if_changed(){
1419     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1420     mkdir -p "$(dirname $2)"
1421     cp -f "$1" "$2"
1422 }
1423
1424 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1425 # system-dependent things.
1426
1427 AVCODEC_COMPONENTS="
1428     bsfs
1429     decoders
1430     encoders
1431     hwaccels
1432     parsers
1433 "
1434
1435 AVDEVICE_COMPONENTS="
1436     indevs
1437     outdevs
1438 "
1439 AVFILTER_COMPONENTS="
1440     filters
1441 "
1442 AVFORMAT_COMPONENTS="
1443     demuxers
1444     muxers
1445     protocols
1446 "
1447
1448 AVRESAMPLE_COMPONENTS=""
1449 AVUTIL_COMPONENTS=""
1450
1451 COMPONENT_LIST="
1452     $AVCODEC_COMPONENTS
1453     $AVDEVICE_COMPONENTS
1454     $AVFILTER_COMPONENTS
1455     $AVFORMAT_COMPONENTS
1456     $AVRESAMPLE_COMPONENTS
1457     $AVUTIL_COMPONENTS
1458 "
1459
1460 EXAMPLE_LIST="
1461     avio_dir_cmd_example
1462     avio_reading_example
1463     decode_audio_example
1464     decode_video_example
1465     demuxing_decoding_example
1466     encode_audio_example
1467     encode_video_example
1468     extract_mvs_example
1469     filter_audio_example
1470     filtering_audio_example
1471     filtering_video_example
1472     http_multiclient_example
1473     metadata_example
1474     muxing_example
1475     qsvdec_example
1476     remuxing_example
1477     resampling_audio_example
1478     scaling_video_example
1479     transcode_aac_example
1480     transcoding_example
1481 "
1482 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1483     bzlib
1484     iconv
1485     libxcb
1486     libxcb_shm
1487     libxcb_shape
1488     libxcb_xfixes
1489     lzma
1490     schannel
1491     sdl
1492     sdl2
1493     securetransport
1494     xlib
1495     zlib
1496 "
1497
1498 EXTERNAL_LIBRARY_GPL_LIST="
1499     avisynth
1500     frei0r
1501     libcdio
1502     librubberband
1503     libvidstab
1504     libx264
1505     libx265
1506     libxavs
1507     libxvid
1508 "
1509
1510 EXTERNAL_LIBRARY_NONFREE_LIST="
1511     decklink
1512     libfdk_aac
1513     openssl
1514 "
1515
1516 EXTERNAL_LIBRARY_VERSION3_LIST="
1517     gmp
1518     libopencore_amrnb
1519     libopencore_amrwb
1520     libvo_amrwbenc
1521 "
1522
1523 EXTERNAL_LIBRARY_GPLV3_LIST="
1524     libsmbclient
1525 "
1526
1527 EXTERNAL_LIBRARY_LIST="
1528     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1529     $EXTERNAL_LIBRARY_GPL_LIST
1530     $EXTERNAL_LIBRARY_NONFREE_LIST
1531     $EXTERNAL_LIBRARY_VERSION3_LIST
1532     $EXTERNAL_LIBRARY_GPLV3_LIST
1533     chromaprint
1534     crystalhd
1535     gcrypt
1536     gnutls
1537     jni
1538     ladspa
1539     libass
1540     libbluray
1541     libbs2b
1542     libcaca
1543     libcelt
1544     libdc1394
1545     libflite
1546     libfontconfig
1547     libfreetype
1548     libfribidi
1549     libgme
1550     libgsm
1551     libiec61883
1552     libilbc
1553     libkvazaar
1554     libmodplug
1555     libmp3lame
1556     libnut
1557     libopencv
1558     libopenh264
1559     libopenjpeg
1560     libopenmpt
1561     libopus
1562     libpulse
1563     librsvg
1564     librtmp
1565     libschroedinger
1566     libshine
1567     libsmbclient
1568     libsnappy
1569     libsoxr
1570     libspeex
1571     libssh
1572     libtesseract
1573     libtheora
1574     libtwolame
1575     libv4l2
1576     libvorbis
1577     libvpx
1578     libwavpack
1579     libwebp
1580     libzimg
1581     libzmq
1582     libzvbi
1583     mediacodec
1584     netcdf
1585     openal
1586     opencl
1587     opengl
1588     videotoolbox
1589 "
1590 HWACCEL_AUTODETECT_LIBRARY_LIST="
1591     audiotoolbox
1592     cuda
1593     cuvid
1594     d3d11va
1595     dxva2
1596     nvenc
1597     vaapi
1598     vda
1599     vdpau
1600     videotoolbox_hwaccel
1601     xvmc
1602 "
1603
1604 HWACCEL_LIBRARY_NONFREE_LIST="
1605     cuda_sdk
1606     libnpp
1607 "
1608
1609 HWACCEL_LIBRARY_LIST="
1610     $HWACCEL_AUTODETECT_LIBRARY_LIST
1611     $HWACCEL_LIBRARY_NONFREE_LIST
1612     libmfx
1613     mmal
1614     omx
1615 "
1616
1617 DOCUMENT_LIST="
1618     doc
1619     htmlpages
1620     manpages
1621     podpages
1622     txtpages
1623 "
1624
1625 FEATURE_LIST="
1626     ftrapv
1627     gray
1628     hardcoded_tables
1629     omx_rpi
1630     runtime_cpudetect
1631     safe_bitstream_reader
1632     shared
1633     small
1634     static
1635     swscale_alpha
1636 "
1637
1638 LIBRARY_LIST="
1639     avcodec
1640     avdevice
1641     avfilter
1642     avformat
1643     avresample
1644     avutil
1645     postproc
1646     swresample
1647     swscale
1648 "
1649
1650 LICENSE_LIST="
1651     gpl
1652     nonfree
1653     version3
1654 "
1655
1656 PROGRAM_LIST="
1657     ffplay
1658     ffprobe
1659     ffserver
1660     ffmpeg
1661 "
1662
1663 SUBSYSTEM_LIST="
1664     dct
1665     dwt
1666     error_resilience
1667     faan
1668     fast_unaligned
1669     fft
1670     lsp
1671     lzo
1672     mdct
1673     pixelutils
1674     network
1675     rdft
1676 "
1677
1678 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1679 CONFIG_LIST="
1680     $DOCUMENT_LIST
1681     $EXAMPLE_LIST
1682     $EXTERNAL_LIBRARY_LIST
1683     $HWACCEL_LIBRARY_LIST
1684     $FEATURE_LIST
1685     $LICENSE_LIST
1686     $LIBRARY_LIST
1687     $PROGRAM_LIST
1688     $SUBSYSTEM_LIST
1689     fontconfig
1690     memory_poisoning
1691     neon_clobber_test
1692     ossfuzz
1693     pic
1694     thumb
1695     valgrind_backtrace
1696     xmm_clobber_test
1697     $COMPONENT_LIST
1698 "
1699
1700 THREADS_LIST="
1701     pthreads
1702     os2threads
1703     w32threads
1704 "
1705
1706 ATOMICS_LIST="
1707     atomics_gcc
1708     atomics_suncc
1709     atomics_win32
1710 "
1711
1712 AUTODETECT_LIBS="
1713     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1714     $HWACCEL_AUTODETECT_LIBRARY_LIST
1715     $THREADS_LIST
1716 "
1717
1718 ARCH_LIST="
1719     aarch64
1720     alpha
1721     arm
1722     avr32
1723     avr32_ap
1724     avr32_uc
1725     bfin
1726     ia64
1727     m68k
1728     mips
1729     mips64
1730     parisc
1731     ppc
1732     ppc64
1733     s390
1734     sh4
1735     sparc
1736     sparc64
1737     tilegx
1738     tilepro
1739     tomi
1740     x86
1741     x86_32
1742     x86_64
1743 "
1744
1745 ARCH_EXT_LIST_ARM="
1746     armv5te
1747     armv6
1748     armv6t2
1749     armv8
1750     neon
1751     vfp
1752     vfpv3
1753     setend
1754 "
1755
1756 ARCH_EXT_LIST_MIPS="
1757     mipsfpu
1758     mips32r2
1759     mips32r5
1760     mips64r2
1761     mips32r6
1762     mips64r6
1763     mipsdsp
1764     mipsdspr2
1765     msa
1766 "
1767
1768 ARCH_EXT_LIST_LOONGSON="
1769     loongson2
1770     loongson3
1771     mmi
1772 "
1773
1774 ARCH_EXT_LIST_X86_SIMD="
1775     aesni
1776     amd3dnow
1777     amd3dnowext
1778     avx
1779     avx2
1780     fma3
1781     fma4
1782     mmx
1783     mmxext
1784     sse
1785     sse2
1786     sse3
1787     sse4
1788     sse42
1789     ssse3
1790     xop
1791 "
1792
1793 ARCH_EXT_LIST_PPC="
1794     altivec
1795     dcbzl
1796     ldbrx
1797     power8
1798     ppc4xx
1799     vsx
1800 "
1801
1802 ARCH_EXT_LIST_X86="
1803     $ARCH_EXT_LIST_X86_SIMD
1804     cpunop
1805     i686
1806 "
1807
1808 ARCH_EXT_LIST="
1809     $ARCH_EXT_LIST_ARM
1810     $ARCH_EXT_LIST_PPC
1811     $ARCH_EXT_LIST_X86
1812     $ARCH_EXT_LIST_MIPS
1813     $ARCH_EXT_LIST_LOONGSON
1814 "
1815
1816 ARCH_FEATURES="
1817     aligned_stack
1818     fast_64bit
1819     fast_clz
1820     fast_cmov
1821     local_aligned_8
1822     local_aligned_16
1823     local_aligned_32
1824     simd_align_16
1825     simd_align_32
1826 "
1827
1828 BUILTIN_LIST="
1829     atomic_cas_ptr
1830     machine_rw_barrier
1831     MemoryBarrier
1832     mm_empty
1833     rdtsc
1834     sarestart
1835     sem_timedwait
1836     sync_val_compare_and_swap
1837 "
1838 HAVE_LIST_CMDLINE="
1839     inline_asm
1840     symver
1841     yasm
1842 "
1843
1844 HAVE_LIST_PUB="
1845     bigendian
1846     fast_unaligned
1847 "
1848
1849 HEADERS_LIST="
1850     alsa_asoundlib_h
1851     altivec_h
1852     arpa_inet_h
1853     asm_types_h
1854     cdio_paranoia_h
1855     cdio_paranoia_paranoia_h
1856     cuda_h
1857     d3d11_h
1858     dispatch_dispatch_h
1859     dev_bktr_ioctl_bt848_h
1860     dev_bktr_ioctl_meteor_h
1861     dev_ic_bt8xx_h
1862     dev_video_bktr_ioctl_bt848_h
1863     dev_video_meteor_ioctl_meteor_h
1864     direct_h
1865     dirent_h
1866     dlfcn_h
1867     dxva_h
1868     ES2_gl_h
1869     gsm_h
1870     io_h
1871     mach_mach_time_h
1872     machine_ioctl_bt848_h
1873     machine_ioctl_meteor_h
1874     malloc_h
1875     opencv2_core_core_c_h
1876     openjpeg_2_1_openjpeg_h
1877     openjpeg_2_0_openjpeg_h
1878     openjpeg_1_5_openjpeg_h
1879     OpenGL_gl3_h
1880     poll_h
1881     sndio_h
1882     soundcard_h
1883     stdatomic_h
1884     sys_mman_h
1885     sys_param_h
1886     sys_resource_h
1887     sys_select_h
1888     sys_soundcard_h
1889     sys_time_h
1890     sys_un_h
1891     sys_videoio_h
1892     termios_h
1893     udplite_h
1894     unistd_h
1895     valgrind_valgrind_h
1896     windows_h
1897     winsock2_h
1898 "
1899
1900 INTRINSICS_LIST="
1901     intrinsics_neon
1902 "
1903
1904 COMPLEX_FUNCS="
1905     cabs
1906     cexp
1907 "
1908
1909 MATH_FUNCS="
1910     atanf
1911     atan2f
1912     cbrt
1913     cbrtf
1914     copysign
1915     cosf
1916     erf
1917     exp2
1918     exp2f
1919     expf
1920     hypot
1921     isfinite
1922     isinf
1923     isnan
1924     ldexpf
1925     llrint
1926     llrintf
1927     log2
1928     log2f
1929     log10f
1930     lrint
1931     lrintf
1932     powf
1933     rint
1934     round
1935     roundf
1936     sinf
1937     trunc
1938     truncf
1939 "
1940
1941 SYSTEM_FUNCS="
1942     access
1943     aligned_malloc
1944     arc4random
1945     clock_gettime
1946     closesocket
1947     CommandLineToArgvW
1948     CoTaskMemFree
1949     CryptGenRandom
1950     dlopen
1951     fcntl
1952     flt_lim
1953     fork
1954     getaddrinfo
1955     gethrtime
1956     getopt
1957     GetProcessAffinityMask
1958     GetProcessMemoryInfo
1959     GetProcessTimes
1960     getrusage
1961     GetSystemTimeAsFileTime
1962     gettimeofday
1963     glob
1964     glXGetProcAddress
1965     gmtime_r
1966     inet_aton
1967     isatty
1968     jack_port_get_latency_range
1969     kbhit
1970     LoadLibrary
1971     localtime_r
1972     lstat
1973     lzo1x_999_compress
1974     mach_absolute_time
1975     MapViewOfFile
1976     memalign
1977     mkstemp
1978     mmap
1979     mprotect
1980     nanosleep
1981     PeekNamedPipe
1982     posix_memalign
1983     pthread_cancel
1984     sched_getaffinity
1985     SetConsoleTextAttribute
1986     SetConsoleCtrlHandler
1987     setmode
1988     setrlimit
1989     Sleep
1990     strerror_r
1991     sysconf
1992     sysctl
1993     usleep
1994     UTGetOSTypeFromString
1995     VirtualAlloc
1996     wglGetProcAddress
1997 "
1998
1999 TOOLCHAIN_FEATURES="
2000     as_dn_directive
2001     as_fpu_directive
2002     as_func
2003     as_object_arch
2004     asm_mod_q
2005     attribute_may_alias
2006     attribute_packed
2007     ebp_available
2008     ebx_available
2009     gnu_as
2010     gnu_windres
2011     ibm_asm
2012     inline_asm_direct_symbol_refs
2013     inline_asm_labels
2014     inline_asm_nonlocal_labels
2015     pragma_deprecated
2016     rsync_contimeout
2017     symver_asm_label
2018     symver_gnu_asm
2019     vfp_args
2020     xform_asm
2021     xmm_clobbers
2022 "
2023
2024 TYPES_LIST="
2025     CONDITION_VARIABLE_Ptr
2026     socklen_t
2027     struct_addrinfo
2028     struct_group_source_req
2029     struct_ip_mreq_source
2030     struct_ipv6_mreq
2031     struct_msghdr_msg_flags
2032     struct_pollfd
2033     struct_rusage_ru_maxrss
2034     struct_sctp_event_subscribe
2035     struct_sockaddr_in6
2036     struct_sockaddr_sa_len
2037     struct_sockaddr_storage
2038     struct_stat_st_mtim_tv_nsec
2039     struct_v4l2_frmivalenum_discrete
2040 "
2041
2042 HAVE_LIST="
2043     $ARCH_EXT_LIST
2044     $(add_suffix _external $ARCH_EXT_LIST)
2045     $(add_suffix _inline   $ARCH_EXT_LIST)
2046     $ARCH_FEATURES
2047     $ATOMICS_LIST
2048     $BUILTIN_LIST
2049     $COMPLEX_FUNCS
2050     $HAVE_LIST_CMDLINE
2051     $HAVE_LIST_PUB
2052     $HEADERS_LIST
2053     $INTRINSICS_LIST
2054     $MATH_FUNCS
2055     $SYSTEM_FUNCS
2056     $THREADS_LIST
2057     $TOOLCHAIN_FEATURES
2058     $TYPES_LIST
2059     alsa
2060     atomics_native
2061     dos_paths
2062     dxva2_lib
2063     dxva2api_cobj
2064     jack
2065     libc_msvcrt
2066     makeinfo
2067     makeinfo_html
2068     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2069     perl
2070     pod2man
2071     sdl2
2072     section_data_rel_ro
2073     sndio
2074     texi2html
2075     threads
2076     vaapi_drm
2077     vaapi_x11
2078     vdpau_x11
2079     winrt
2080 "
2081
2082 # options emitted with CONFIG_ prefix but not available on the command line
2083 CONFIG_EXTRA="
2084     aandcttables
2085     ac3dsp
2086     audio_frame_queue
2087     audiodsp
2088     blockdsp
2089     bswapdsp
2090     cabac
2091     dirac_parse
2092     dvprofile
2093     exif
2094     faandct
2095     faanidct
2096     fdctdsp
2097     flacdsp
2098     fmtconvert
2099     frame_thread_encoder
2100     g722dsp
2101     golomb
2102     gplv3
2103     h263dsp
2104     h264chroma
2105     h264dsp
2106     h264parse
2107     h264pred
2108     h264qpel
2109     hevcparse
2110     hpeldsp
2111     huffman
2112     huffyuvdsp
2113     huffyuvencdsp
2114     idctdsp
2115     iirfilter
2116     mdct15
2117     intrax8
2118     iso_media
2119     ividsp
2120     jpegtables
2121     lgplv3
2122     libx262
2123     llauddsp
2124     llviddsp
2125     llvidencdsp
2126     lpc
2127     lzf
2128     me_cmp
2129     mpeg_er
2130     mpegaudio
2131     mpegaudiodsp
2132     mpegaudioheader
2133     mpegvideo
2134     mpegvideoenc
2135     mss34dsp
2136     pixblockdsp
2137     qpeldsp
2138     qsv
2139     qsvdec
2140     qsvenc
2141     rangecoder
2142     riffdec
2143     riffenc
2144     rtpdec
2145     rtpenc_chain
2146     rv34dsp
2147     sinewin
2148     snappy
2149     srtp
2150     startcode
2151     texturedsp
2152     texturedspenc
2153     tpeldsp
2154     vaapi_encode
2155     vc1dsp
2156     videodsp
2157     vp3dsp
2158     vp56dsp
2159     vp8dsp
2160     vt_bt2020
2161     wma_freqs
2162     wmv2dsp
2163 "
2164
2165 CMDLINE_SELECT="
2166     $ARCH_EXT_LIST
2167     $CONFIG_LIST
2168     $HAVE_LIST_CMDLINE
2169     $THREADS_LIST
2170     asm
2171     cross_compile
2172     debug
2173     extra_warnings
2174     logging
2175     lto
2176     optimizations
2177     rpath
2178     stripping
2179 "
2180
2181 PATHS_LIST="
2182     bindir
2183     datadir
2184     docdir
2185     incdir
2186     libdir
2187     mandir
2188     pkgconfigdir
2189     prefix
2190     shlibdir
2191     install_name_dir
2192 "
2193
2194 CMDLINE_SET="
2195     $PATHS_LIST
2196     ar
2197     arch
2198     as
2199     assert_level
2200     build_suffix
2201     cc
2202     objcc
2203     cpu
2204     cross_prefix
2205     custom_allocator
2206     cxx
2207     dep_cc
2208     doxygen
2209     env
2210     extra_version
2211     gas
2212     host_cc
2213     host_cflags
2214     host_extralibs
2215     host_ld
2216     host_ldflags
2217     host_os
2218     ignore_tests
2219     install
2220     ld
2221     ln_s
2222     logfile
2223     malloc_prefix
2224     nm
2225     optflags
2226     nvccflags
2227     pkg_config
2228     pkg_config_flags
2229     progs_suffix
2230     random_seed
2231     ranlib
2232     samples
2233     strip
2234     sws_max_filter_size
2235     sysinclude
2236     sysroot
2237     target_exec
2238     target_os
2239     target_path
2240     target_samples
2241     tempprefix
2242     toolchain
2243     valgrind
2244     yasmexe
2245 "
2246
2247 CMDLINE_APPEND="
2248     extra_cflags
2249     extra_cxxflags
2250     extra_objcflags
2251     host_cppflags
2252 "
2253
2254 # code dependency declarations
2255
2256 # architecture extensions
2257
2258 armv5te_deps="arm"
2259 armv6_deps="arm"
2260 armv6t2_deps="arm"
2261 armv8_deps="aarch64"
2262 neon_deps_any="aarch64 arm"
2263 intrinsics_neon_deps="neon"
2264 vfp_deps_any="aarch64 arm"
2265 vfpv3_deps="vfp"
2266 setend_deps="arm"
2267
2268 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2269
2270 loongson2_deps="mips"
2271 loongson3_deps="mips"
2272 mipsfpu_deps="mips"
2273 mipsdsp_deps="mips"
2274 mipsdspr2_deps="mips"
2275 mips32r2_deps="mips"
2276 mips32r5_deps="mips"
2277 mips32r6_deps="mips"
2278 mips64r2_deps="mips"
2279 mips64r6_deps="mips"
2280 msa_deps="mipsfpu"
2281 mmi_deps="mips"
2282
2283 altivec_deps="ppc"
2284 dcbzl_deps="ppc"
2285 ldbrx_deps="ppc"
2286 ppc4xx_deps="ppc"
2287 vsx_deps="altivec"
2288 power8_deps="vsx"
2289
2290 cpunop_deps="i686"
2291 x86_64_select="i686"
2292 x86_64_suggest="fast_cmov"
2293
2294 amd3dnow_deps="mmx"
2295 amd3dnowext_deps="amd3dnow"
2296 i686_deps="x86"
2297 mmx_deps="x86"
2298 mmxext_deps="mmx"
2299 sse_deps="mmxext"
2300 sse2_deps="sse"
2301 sse3_deps="sse2"
2302 ssse3_deps="sse3"
2303 sse4_deps="ssse3"
2304 sse42_deps="sse4"
2305 aesni_deps="sse42"
2306 avx_deps="sse42"
2307 xop_deps="avx"
2308 fma3_deps="avx"
2309 fma4_deps="avx"
2310 avx2_deps="avx"
2311
2312 mmx_external_deps="yasm"
2313 mmx_inline_deps="inline_asm"
2314 mmx_suggest="mmx_external mmx_inline"
2315
2316 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2317     eval dep=\$${ext}_deps
2318     eval ${ext}_external_deps='"${dep}_external"'
2319     eval ${ext}_inline_deps='"${dep}_inline"'
2320     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2321 done
2322
2323 aligned_stack_if_any="aarch64 ppc x86"
2324 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2325 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2326 fast_unaligned_if_any="aarch64 ppc x86"
2327 simd_align_16_if_any="altivec neon sse"
2328 simd_align_32_if_any="avx"
2329
2330 # system capabilities
2331 symver_if_any="symver_asm_label symver_gnu_asm"
2332 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
2333
2334 # threading support
2335 atomics_gcc_if="sync_val_compare_and_swap"
2336 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2337 atomics_win32_if="MemoryBarrier"
2338 atomics_native_if_any="$ATOMICS_LIST"
2339 w32threads_deps="atomics_native"
2340 threads_if_any="$THREADS_LIST"
2341
2342 # subsystems
2343 dct_select="rdft"
2344 dirac_parse_select="golomb"
2345 error_resilience_select="me_cmp"
2346 faandct_deps="faan fdctdsp"
2347 faanidct_deps="faan idctdsp"
2348 h264dsp_select="startcode"
2349 hevcparse_select="golomb"
2350 frame_thread_encoder_deps="encoders threads"
2351 intrax8_select="blockdsp idctdsp"
2352 mdct_select="fft"
2353 mdct15_select="fft"
2354 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2355 mpeg_er_select="error_resilience"
2356 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2357 mpegaudiodsp_select="dct"
2358 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2359 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2360 vc1dsp_select="h264chroma qpeldsp startcode"
2361 rdft_select="fft"
2362
2363 # decoders / encoders
2364 aac_decoder_select="mdct15 mdct sinewin"
2365 aac_fixed_decoder_select="mdct sinewin"
2366 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2367 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2368 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2369 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2370 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2371 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2372 adpcm_g722_decoder_select="g722dsp"
2373 adpcm_g722_encoder_select="g722dsp"
2374 aic_decoder_select="golomb idctdsp"
2375 alac_encoder_select="lpc"
2376 als_decoder_select="bswapdsp"
2377 amrnb_decoder_select="lsp"
2378 amrwb_decoder_select="lsp"
2379 amv_decoder_select="sp5x_decoder exif"
2380 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2381 ape_decoder_select="bswapdsp llauddsp"
2382 apng_decoder_select="zlib"
2383 apng_encoder_select="llvidencdsp zlib"
2384 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2385 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2386 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2387 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2388 atrac1_decoder_select="mdct sinewin"
2389 atrac3_decoder_select="mdct"
2390 atrac3p_decoder_select="mdct sinewin"
2391 avrn_decoder_select="exif jpegtables"
2392 bink_decoder_select="blockdsp hpeldsp"
2393 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2394 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2395 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2396 cllc_decoder_select="bswapdsp"
2397 comfortnoise_encoder_select="lpc"
2398 cook_decoder_select="audiodsp mdct sinewin"
2399 cscd_decoder_select="lzo"
2400 cscd_decoder_suggest="zlib"
2401 dca_decoder_select="mdct"
2402 dds_decoder_select="texturedsp"
2403 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2404 dnxhd_decoder_select="blockdsp idctdsp"
2405 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2406 dvvideo_decoder_select="dvprofile idctdsp"
2407 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2408 dxa_decoder_select="zlib"
2409 dxv_decoder_select="lzf texturedsp"
2410 eac3_decoder_select="ac3_decoder"
2411 eac3_encoder_select="ac3_encoder"
2412 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2413 eatgq_decoder_select="aandcttables"
2414 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2415 exr_decoder_select="zlib"
2416 ffv1_decoder_select="rangecoder"
2417 ffv1_encoder_select="rangecoder"
2418 ffvhuff_decoder_select="huffyuv_decoder"
2419 ffvhuff_encoder_select="huffyuv_encoder"
2420 fic_decoder_select="golomb"
2421 flac_decoder_select="flacdsp"
2422 flac_encoder_select="bswapdsp flacdsp lpc"
2423 flashsv2_decoder_select="zlib"
2424 flashsv2_encoder_select="zlib"
2425 flashsv_decoder_select="zlib"
2426 flashsv_encoder_select="zlib"
2427 flv_decoder_select="h263_decoder"
2428 flv_encoder_select="h263_encoder"
2429 fourxm_decoder_select="blockdsp bswapdsp"
2430 fraps_decoder_select="bswapdsp huffman"
2431 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2432 g729_decoder_select="audiodsp"
2433 h261_decoder_select="mpegvideo"
2434 h261_encoder_select="aandcttables mpegvideoenc"
2435 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2436 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2437 h263i_decoder_select="h263_decoder"
2438 h263p_decoder_select="h263_decoder"
2439 h263p_encoder_select="h263_encoder"
2440 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2441 h264_decoder_suggest="error_resilience"
2442 hap_decoder_select="snappy texturedsp"
2443 hap_encoder_deps="libsnappy"
2444 hap_encoder_select="texturedspenc"
2445 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2446 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2447 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2448 iac_decoder_select="imc_decoder"
2449 imc_decoder_select="bswapdsp fft mdct sinewin"
2450 indeo3_decoder_select="hpeldsp"
2451 indeo4_decoder_select="ividsp"
2452 indeo5_decoder_select="ividsp"
2453 interplay_video_decoder_select="hpeldsp"
2454 jpegls_decoder_select="mjpeg_decoder"
2455 jv_decoder_select="blockdsp"
2456 lagarith_decoder_select="llviddsp"
2457 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2458 magicyuv_decoder_select="llviddsp"
2459 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2460 metasound_decoder_select="lsp mdct sinewin"
2461 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2462 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2463 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2464 mjpegb_decoder_select="mjpeg_decoder"
2465 mlp_decoder_select="mlp_parser"
2466 mlp_encoder_select="lpc"
2467 motionpixels_decoder_select="bswapdsp"
2468 mp1_decoder_select="mpegaudio"
2469 mp1float_decoder_select="mpegaudio"
2470 mp2_decoder_select="mpegaudio"
2471 mp2float_decoder_select="mpegaudio"
2472 mp3_decoder_select="mpegaudio"
2473 mp3adu_decoder_select="mpegaudio"
2474 mp3adufloat_decoder_select="mpegaudio"
2475 mp3float_decoder_select="mpegaudio"
2476 mp3on4_decoder_select="mpegaudio"
2477 mp3on4float_decoder_select="mpegaudio"
2478 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2479 mpc8_decoder_select="mpegaudiodsp"
2480 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2481 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2482 mpegvideo_decoder_select="mpegvideo"
2483 mpeg1video_decoder_select="mpegvideo"
2484 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2485 mpeg2video_decoder_select="mpegvideo"
2486 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2487 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2488 mpeg4_encoder_select="h263_encoder"
2489 msa1_decoder_select="mss34dsp"
2490 mscc_decoder_select="zlib"
2491 msmpeg4v1_decoder_select="h263_decoder"
2492 msmpeg4v2_decoder_select="h263_decoder"
2493 msmpeg4v2_encoder_select="h263_encoder"
2494 msmpeg4v3_decoder_select="h263_decoder"
2495 msmpeg4v3_encoder_select="h263_encoder"
2496 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2497 mts2_decoder_select="mss34dsp"
2498 mxpeg_decoder_select="mjpeg_decoder"
2499 nellymoser_decoder_select="mdct sinewin"
2500 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2501 nuv_decoder_select="idctdsp lzo"
2502 on2avc_decoder_select="mdct"
2503 opus_decoder_deps="swresample"
2504 opus_decoder_select="mdct15"
2505 opus_encoder_select="audio_frame_queue mdct15"
2506 png_decoder_select="zlib"
2507 png_encoder_select="llvidencdsp zlib"
2508 prores_decoder_select="blockdsp idctdsp"
2509 prores_encoder_select="fdctdsp"
2510 qcelp_decoder_select="lsp"
2511 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2512 ra_144_decoder_select="audiodsp"
2513 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2514 ralf_decoder_select="golomb"
2515 rawvideo_decoder_select="bswapdsp"
2516 rscc_decoder_select="zlib"
2517 rtjpeg_decoder_select="me_cmp"
2518 rv10_decoder_select="h263_decoder"
2519 rv10_encoder_select="h263_encoder"
2520 rv20_decoder_select="h263_decoder"
2521 rv20_encoder_select="h263_encoder"
2522 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2523 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2524 screenpresso_decoder_select="zlib"
2525 shorten_decoder_select="bswapdsp"
2526 sipr_decoder_select="lsp"
2527 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2528 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2529 sonic_decoder_select="golomb rangecoder"
2530 sonic_encoder_select="golomb rangecoder"
2531 sonic_ls_encoder_select="golomb rangecoder"
2532 sp5x_decoder_select="mjpeg_decoder"
2533 srgc_decoder_select="zlib"
2534 svq1_decoder_select="hpeldsp"
2535 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2536 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2537 svq3_decoder_suggest="zlib"
2538 tak_decoder_select="audiodsp"
2539 tdsc_decoder_select="zlib mjpeg_decoder"
2540 theora_decoder_select="vp3_decoder"
2541 thp_decoder_select="mjpeg_decoder"
2542 tiff_decoder_suggest="zlib lzma"
2543 tiff_encoder_suggest="zlib"
2544 truehd_decoder_select="mlp_parser"
2545 truehd_encoder_select="lpc"
2546 truemotion2_decoder_select="bswapdsp"
2547 truespeech_decoder_select="bswapdsp"
2548 tscc_decoder_select="zlib"
2549 twinvq_decoder_select="mdct lsp sinewin"
2550 txd_decoder_select="texturedsp"
2551 utvideo_decoder_select="bswapdsp llviddsp"
2552 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2553 vble_decoder_select="llviddsp"
2554 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2555 vc1_qsv_decoder_deps="libmfx"
2556 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2557 vc1image_decoder_select="vc1_decoder"
2558 vorbis_decoder_select="mdct"
2559 vorbis_encoder_select="mdct"
2560 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2561 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2562 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2563 vp6a_decoder_select="vp6_decoder"
2564 vp6f_decoder_select="vp6_decoder"
2565 vp7_decoder_select="h264pred videodsp vp8dsp"
2566 vp8_decoder_select="h264pred videodsp vp8dsp"
2567 vp9_decoder_select="videodsp vp9_parser"
2568 webp_decoder_select="vp8_decoder exif"
2569 wmalossless_decoder_select="llauddsp"
2570 wmapro_decoder_select="mdct sinewin wma_freqs"
2571 wmav1_decoder_select="mdct sinewin wma_freqs"
2572 wmav1_encoder_select="mdct sinewin wma_freqs"
2573 wmav2_decoder_select="mdct sinewin wma_freqs"
2574 wmav2_encoder_select="mdct sinewin wma_freqs"
2575 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2576 wmv1_decoder_select="h263_decoder"
2577 wmv1_encoder_select="h263_encoder"
2578 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2579 wmv2_encoder_select="h263_encoder wmv2dsp"
2580 wmv3_decoder_select="vc1_decoder"
2581 wmv3image_decoder_select="wmv3_decoder"
2582 xma1_decoder_select="wmapro_decoder"
2583 xma2_decoder_select="wmapro_decoder"
2584 zerocodec_decoder_select="zlib"
2585 zlib_decoder_select="zlib"
2586 zlib_encoder_select="zlib"
2587 zmbv_decoder_select="zlib"
2588 zmbv_encoder_select="zlib"
2589
2590 # platform codecs
2591 audiotoolbox_deps="AudioToolbox_AudioToolbox_h"
2592 audiotoolbox_extralibs="-framework CoreFoundation -framework AudioToolbox -framework CoreMedia"
2593
2594 # hardware accelerators
2595 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2596 cuda_deps_any="dlopen LoadLibrary"
2597 cuvid_deps="cuda"
2598 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2599 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2600 dxva2_extralibs="-luser32"
2601 dxva2_lib_deps="dxva2"
2602 vda_framework_deps="VideoDecodeAcceleration_VDADecoder_h"
2603 vda_framework_extralibs="-framework VideoDecodeAcceleration"
2604 vda_deps="vda_framework pthreads"
2605 vda_extralibs="-framework CoreFoundation -framework QuartzCore"
2606 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2607 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2608 xvmc_deps="X11_extensions_XvMClib_h"
2609
2610 h263_vaapi_hwaccel_deps="vaapi"
2611 h263_vaapi_hwaccel_select="h263_decoder"
2612 h263_videotoolbox_hwaccel_deps="videotoolbox"
2613 h263_videotoolbox_hwaccel_select="h263_decoder"
2614 h264_cuvid_hwaccel_deps="cuda cuvid"
2615 h264_cuvid_hwaccel_select="h264_cuvid_decoder"
2616 h264_d3d11va_hwaccel_deps="d3d11va"
2617 h264_d3d11va_hwaccel_select="h264_decoder"
2618 h264_dxva2_hwaccel_deps="dxva2"
2619 h264_dxva2_hwaccel_select="h264_decoder"
2620 h264_mediacodec_hwaccel_deps="mediacodec"
2621 h264_mmal_hwaccel_deps="mmal"
2622 h264_qsv_hwaccel_deps="libmfx"
2623 h264_vaapi_hwaccel_deps="vaapi"
2624 h264_vaapi_hwaccel_select="h264_decoder"
2625 h264_vda_hwaccel_deps="vda"
2626 h264_vda_hwaccel_select="h264_decoder"
2627 h264_vda_old_hwaccel_deps="vda"
2628 h264_vda_old_hwaccel_select="h264_decoder"
2629 h264_vdpau_hwaccel_deps="vdpau"
2630 h264_vdpau_hwaccel_select="h264_decoder"
2631 h264_videotoolbox_hwaccel_deps="videotoolbox"
2632 h264_videotoolbox_hwaccel_select="h264_decoder"
2633 hevc_cuvid_hwaccel_deps="cuda cuvid"
2634 hevc_cuvid_hwaccel_select="hevc_cuvid_decoder"
2635 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2636 hevc_d3d11va_hwaccel_select="hevc_decoder"
2637 hevc_mediacodec_hwaccel_deps="mediacodec"
2638 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2639 hevc_dxva2_hwaccel_select="hevc_decoder"
2640 hevc_qsv_hwaccel_deps="libmfx"
2641 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2642 hevc_vaapi_hwaccel_select="hevc_decoder"
2643 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2644 hevc_vdpau_hwaccel_select="hevc_decoder"
2645 mjpeg_cuvid_hwaccel_deps="cuda cuvid"
2646 mjpeg_cuvid_hwaccel_select="mjpeg_cuvid_decoder"
2647 mpeg_xvmc_hwaccel_deps="xvmc"
2648 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2649 mpeg1_cuvid_hwaccel_deps="cuda cuvid"
2650 mpeg1_cuvid_hwaccel_select="mpeg1_cuvid_decoder"
2651 mpeg1_vdpau_hwaccel_deps="vdpau"
2652 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2653 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2654 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2655 mpeg1_xvmc_hwaccel_deps="xvmc"
2656 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2657 mpeg2_cuvid_hwaccel_deps="cuda cuvid"
2658 mpeg2_cuvid_hwaccel_select="mpeg2_cuvid_decoder"
2659 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2660 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2661 mpeg2_dxva2_hwaccel_deps="dxva2"
2662 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2663 mpeg2_mmal_hwaccel_deps="mmal"
2664 mpeg2_qsv_hwaccel_deps="libmfx"
2665 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2666 mpeg2_vaapi_hwaccel_deps="vaapi"
2667 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2668 mpeg2_vdpau_hwaccel_deps="vdpau"
2669 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2670 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2671 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2672 mpeg2_xvmc_hwaccel_deps="xvmc"
2673 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2674 mpeg4_cuvid_hwaccel_deps="cuda cuvid"
2675 mpeg4_cuvid_hwaccel_select="mpeg4_cuvid_decoder"
2676 mpeg4_mediacodec_hwaccel_deps="mediacodec"
2677 mpeg4_mmal_hwaccel_deps="mmal"
2678 mpeg4_vaapi_hwaccel_deps="vaapi"
2679 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2680 mpeg4_vdpau_hwaccel_deps="vdpau"
2681 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2682 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2683 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2684 vc1_cuvid_hwaccel_deps="cuda cuvid"
2685 vc1_cuvid_hwaccel_select="vc1_cuvid_decoder"
2686 vc1_d3d11va_hwaccel_deps="d3d11va"
2687 vc1_d3d11va_hwaccel_select="vc1_decoder"
2688 vc1_dxva2_hwaccel_deps="dxva2"
2689 vc1_dxva2_hwaccel_select="vc1_decoder"
2690 vc1_mmal_hwaccel_deps="mmal"
2691 vc1_qsv_hwaccel_deps="libmfx"
2692 vc1_qsv_hwaccel_select="qsvdec_vc1"
2693 vc1_vaapi_hwaccel_deps="vaapi"
2694 vc1_vaapi_hwaccel_select="vc1_decoder"
2695 vc1_vdpau_hwaccel_deps="vdpau"
2696 vc1_vdpau_hwaccel_select="vc1_decoder"
2697 vp8_cuvid_hwaccel_deps="cuda cuvid"
2698 vp8_cuvid_hwaccel_select="vp8_cuvid_decoder"
2699 vp9_cuvid_hwaccel_deps="cuda cuvid"
2700 vp9_cuvid_hwaccel_select="vp9_cuvid_decoder"
2701 vp8_mediacodec_hwaccel_deps="mediacodec"
2702 vp8_qsv_hwaccel_deps="libmfx"
2703 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2704 vp9_d3d11va_hwaccel_select="vp9_decoder"
2705 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2706 vp9_dxva2_hwaccel_select="vp9_decoder"
2707 vp9_mediacodec_hwaccel_deps="mediacodec"
2708 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2709 vp9_vaapi_hwaccel_select="vp9_decoder"
2710 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2711 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2712 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2713 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2714
2715 # hardware-accelerated codecs
2716 omx_deps="dlopen pthreads"
2717 omx_extralibs='$ldl'
2718 omx_rpi_select="omx"
2719 qsvdec_select="qsv"
2720 qsvenc_select="qsv"
2721 vaapi_encode_deps="vaapi"
2722
2723 hwupload_cuda_filter_deps="cuda"
2724 scale_npp_filter_deps="cuda_sdk libnpp"
2725 scale_cuda_filter_deps="cuda_sdk"
2726
2727 nvenc_deps="cuda"
2728 nvenc_deps_any="dlopen LoadLibrary"
2729 nvenc_encoder_deps="nvenc"
2730
2731 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2732 h264_cuvid_decoder_deps="cuda cuvid"
2733 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2734 h264_mediacodec_decoder_deps="mediacodec"
2735 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2736 h264_mmal_decoder_deps="mmal"
2737 h264_nvenc_encoder_deps="nvenc"
2738 h264_omx_encoder_deps="omx"
2739 h264_qsv_decoder_deps="libmfx"
2740 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2741 h264_qsv_encoder_deps="libmfx"
2742 h264_qsv_encoder_select="qsvenc"
2743 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2744 h264_vaapi_encoder_select="vaapi_encode golomb"
2745 h264_vda_decoder_deps="vda"
2746 h264_vda_decoder_select="h264_decoder"
2747 h264_vdpau_decoder_deps="vdpau"
2748 h264_vdpau_decoder_select="h264_decoder"
2749 hevc_cuvid_decoder_deps="cuda cuvid"
2750 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2751 hevc_mediacodec_decoder_deps="mediacodec"
2752 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2753 hevc_nvenc_encoder_deps="nvenc"
2754 hevc_qsv_decoder_deps="libmfx"
2755 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2756 hevc_qsv_encoder_deps="libmfx"
2757 hevc_qsv_encoder_select="hevcparse qsvenc"
2758 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2759 hevc_vaapi_encoder_select="vaapi_encode golomb"
2760 mjpeg_cuvid_decoder_deps="cuda cuvid"
2761 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2762 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2763 mpeg1_cuvid_decoder_deps="cuda cuvid"
2764 mpeg1_vdpau_decoder_deps="vdpau"
2765 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2766 mpeg2_crystalhd_decoder_select="crystalhd"
2767 mpeg2_cuvid_decoder_deps="cuda cuvid"
2768 mpeg2_mmal_decoder_deps="mmal"
2769 mpeg2_qsv_decoder_deps="libmfx"
2770 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2771 mpeg2_qsv_encoder_deps="libmfx"
2772 mpeg2_qsv_encoder_select="qsvenc"
2773 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2774 mpeg2_vaapi_encoder_select="vaapi_encode"
2775 mpeg4_crystalhd_decoder_select="crystalhd"
2776 mpeg4_cuvid_decoder_deps="cuda cuvid"
2777 mpeg4_mediacodec_decoder_deps="mediacodec"
2778 mpeg4_mmal_decoder_deps="mmal"
2779 mpeg4_omx_encoder_deps="omx"
2780 mpeg4_vdpau_decoder_deps="vdpau"
2781 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2782 mpeg_vdpau_decoder_deps="vdpau"
2783 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2784 msmpeg4_crystalhd_decoder_select="crystalhd"
2785 nvenc_h264_encoder_select="h264_nvenc_encoder"
2786 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2787 vc1_crystalhd_decoder_select="crystalhd"
2788 vc1_cuvid_decoder_deps="cuda cuvid"
2789 vc1_mmal_decoder_deps="mmal"
2790 vc1_vdpau_decoder_deps="vdpau"
2791 vc1_vdpau_decoder_select="vc1_decoder"
2792 vp8_cuvid_decoder_deps="cuda cuvid"
2793 vp8_mediacodec_decoder_deps="mediacodec"
2794 vp8_qsv_decoder_deps="libmfx"
2795 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2796 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2797 vp8_vaapi_encoder_select="vaapi_encode"
2798 vp9_cuvid_decoder_deps="cuda cuvid"
2799 vp9_mediacodec_decoder_deps="mediacodec"
2800 wmv3_crystalhd_decoder_select="crystalhd"
2801 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2802
2803 # parsers
2804 h264_parser_select="golomb h264dsp h264parse"
2805 hevc_parser_select="hevcparse"
2806 mpegaudio_parser_select="mpegaudioheader"
2807 mpegvideo_parser_select="mpegvideo"
2808 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2809 vc1_parser_select="vc1dsp"
2810
2811 # bitstream_filters
2812 mjpeg2jpeg_bsf_select="jpegtables"
2813
2814 # external libraries
2815 aac_at_decoder_deps="audiotoolbox"
2816 ac3_at_decoder_deps="audiotoolbox"
2817 ac3_at_decoder_select="ac3_parser"
2818 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2819 alac_at_decoder_deps="audiotoolbox"
2820 amr_nb_at_decoder_deps="audiotoolbox"
2821 avisynth_deps_any="dlopen LoadLibrary"
2822 avisynth_demuxer_deps="avisynth"
2823 avisynth_demuxer_select="riffdec"
2824 eac3_at_decoder_deps="audiotoolbox"
2825 eac3_at_decoder_select="ac3_parser"
2826 gsm_ms_at_decoder_deps="audiotoolbox"
2827 ilbc_at_decoder_deps="audiotoolbox"
2828 mp1_at_decoder_deps="audiotoolbox"
2829 mp2_at_decoder_deps="audiotoolbox"
2830 mp3_at_decoder_deps="audiotoolbox"
2831 mp1_at_decoder_select="mpegaudioheader"
2832 mp2_at_decoder_select="mpegaudioheader"
2833 mp3_at_decoder_select="mpegaudioheader"
2834 pcm_alaw_at_decoder_deps="audiotoolbox"
2835 pcm_mulaw_at_decoder_deps="audiotoolbox"
2836 qdmc_at_decoder_deps="audiotoolbox"
2837 qdm2_at_decoder_deps="audiotoolbox"
2838 aac_at_encoder_deps="audiotoolbox"
2839 aac_at_encoder_select="audio_frame_queue"
2840 alac_at_encoder_deps="audiotoolbox"
2841 alac_at_encoder_select="audio_frame_queue"
2842 ilbc_at_encoder_deps="audiotoolbox"
2843 ilbc_at_encoder_select="audio_frame_queue"
2844 pcm_alaw_at_encoder_deps="audiotoolbox"
2845 pcm_alaw_at_encoder_select="audio_frame_queue"
2846 pcm_mulaw_at_encoder_deps="audiotoolbox"
2847 pcm_mulaw_at_encoder_select="audio_frame_queue"
2848 chromaprint_muxer_deps="chromaprint"
2849 h264_videotoolbox_encoder_deps="videotoolbox_encoder pthreads"
2850 libcelt_decoder_deps="libcelt"
2851 libfdk_aac_decoder_deps="libfdk_aac"
2852 libfdk_aac_encoder_deps="libfdk_aac"
2853 libfdk_aac_encoder_select="audio_frame_queue"
2854 libgme_demuxer_deps="libgme"
2855 libgsm_decoder_deps="libgsm"
2856 libgsm_encoder_deps="libgsm"
2857 libgsm_ms_decoder_deps="libgsm"
2858 libgsm_ms_encoder_deps="libgsm"
2859 libilbc_decoder_deps="libilbc"
2860 libilbc_encoder_deps="libilbc"
2861 libkvazaar_encoder_deps="libkvazaar"
2862 libmodplug_demuxer_deps="libmodplug"
2863 libmp3lame_encoder_deps="libmp3lame"
2864 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2865 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2866 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2867 libopencore_amrnb_encoder_select="audio_frame_queue"
2868 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2869 libopenh264_decoder_deps="libopenh264"
2870 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2871 libopenh264_encoder_deps="libopenh264"
2872 libopenjpeg_decoder_deps="libopenjpeg"
2873 libopenjpeg_encoder_deps="libopenjpeg"
2874 libopenmpt_demuxer_deps="libopenmpt"
2875 libopus_decoder_deps="libopus"
2876 libopus_encoder_deps="libopus"
2877 libopus_encoder_select="audio_frame_queue"
2878 librsvg_decoder_deps="librsvg"
2879 libschroedinger_decoder_deps="libschroedinger"
2880 libschroedinger_encoder_deps="libschroedinger"
2881 libshine_encoder_deps="libshine"
2882 libshine_encoder_select="audio_frame_queue"
2883 libspeex_decoder_deps="libspeex"
2884 libspeex_encoder_deps="libspeex"
2885 libspeex_encoder_select="audio_frame_queue"
2886 libtheora_encoder_deps="libtheora"
2887 libtwolame_encoder_deps="libtwolame"
2888 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2889 libvorbis_decoder_deps="libvorbis"
2890 libvorbis_encoder_deps="libvorbis"
2891 libvorbis_encoder_select="audio_frame_queue"
2892 libvpx_vp8_decoder_deps="libvpx"
2893 libvpx_vp8_encoder_deps="libvpx"
2894 libvpx_vp9_decoder_deps="libvpx"
2895 libvpx_vp9_encoder_deps="libvpx"
2896 libwavpack_encoder_deps="libwavpack"
2897 libwavpack_encoder_select="audio_frame_queue"
2898 libwebp_encoder_deps="libwebp"
2899 libwebp_anim_encoder_deps="libwebp"
2900 libx262_encoder_deps="libx262"
2901 libx264_encoder_deps="libx264"
2902 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2903 libx264rgb_encoder_select="libx264_encoder"
2904 libx265_encoder_deps="libx265"
2905 libxavs_encoder_deps="libxavs"
2906 libxvid_encoder_deps="libxvid"
2907 libzvbi_teletext_decoder_deps="libzvbi"
2908 videotoolbox_deps="VideoToolbox_VideoToolbox_h"
2909 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework CoreVideo"
2910 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2911 videotoolbox_encoder_suggest="vda_framework vt_bt2020"
2912 vt_bt2020_deps="kCVImageBufferColorPrimaries_ITU_R_2020"
2913
2914 # demuxers / muxers
2915 ac3_demuxer_select="ac3_parser"
2916 aiff_muxer_select="iso_media"
2917 asf_demuxer_select="riffdec"
2918 asf_o_demuxer_select="riffdec"
2919 asf_muxer_select="riffenc"
2920 asf_stream_muxer_select="asf_muxer"
2921 avi_demuxer_select="iso_media riffdec exif"
2922 avi_muxer_select="riffenc"
2923 caf_demuxer_select="iso_media riffdec"
2924 caf_muxer_select="iso_media"
2925 dash_muxer_select="mp4_muxer"
2926 dirac_demuxer_select="dirac_parser"
2927 dts_demuxer_select="dca_parser"
2928 dtshd_demuxer_select="dca_parser"
2929 dv_demuxer_select="dvprofile"
2930 dv_muxer_select="dvprofile"
2931 dxa_demuxer_select="riffdec"
2932 eac3_demuxer_select="ac3_parser"
2933 f4v_muxer_select="mov_muxer"
2934 fifo_muxer_deps="threads"
2935 flac_demuxer_select="flac_parser"
2936 hds_muxer_select="flv_muxer"
2937 hls_muxer_select="mpegts_muxer"
2938 image2_alias_pix_demuxer_select="image2_demuxer"
2939 image2_brender_pix_demuxer_select="image2_demuxer"
2940 ipod_muxer_select="mov_muxer"
2941 ismv_muxer_select="mov_muxer"
2942 libnut_demuxer_deps="libnut"
2943 libnut_muxer_deps="libnut"
2944 matroska_audio_muxer_select="matroska_muxer"
2945 matroska_demuxer_select="iso_media riffdec"
2946 matroska_demuxer_suggest="bzlib lzo zlib"
2947 matroska_muxer_select="iso_media riffenc"
2948 mmf_muxer_select="riffenc"
2949 mov_demuxer_select="iso_media riffdec"
2950 mov_demuxer_suggest="zlib"
2951 mov_muxer_select="iso_media riffenc rtpenc_chain"
2952 mp3_demuxer_select="mpegaudio_parser"
2953 mp3_muxer_select="mpegaudioheader"
2954 mp4_muxer_select="mov_muxer"
2955 mpegts_demuxer_select="iso_media"
2956 mpegts_muxer_select="adts_muxer latm_muxer"
2957 mpegtsraw_demuxer_select="mpegts_demuxer"
2958 mxf_d10_muxer_select="mxf_muxer"
2959 mxf_opatom_muxer_select="mxf_muxer"
2960 nut_muxer_select="riffenc"
2961 nuv_demuxer_select="riffdec"
2962 oga_muxer_select="ogg_muxer"
2963 ogg_demuxer_select="dirac_parse"
2964 ogv_muxer_select="ogg_muxer"
2965 opus_muxer_select="ogg_muxer"
2966 psp_muxer_select="mov_muxer"
2967 rtp_demuxer_select="sdp_demuxer"
2968 rtp_muxer_select="golomb"
2969 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2970 rtsp_demuxer_select="http_protocol rtpdec"
2971 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2972 sap_demuxer_select="sdp_demuxer"
2973 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2974 sdp_demuxer_select="rtpdec"
2975 smoothstreaming_muxer_select="ismv_muxer"
2976 spdif_muxer_select="aac_parser"
2977 spx_muxer_select="ogg_muxer"
2978 swf_demuxer_suggest="zlib"
2979 tak_demuxer_select="tak_parser"
2980 tg2_muxer_select="mov_muxer"
2981 tgp_muxer_select="mov_muxer"
2982 vobsub_demuxer_select="mpegps_demuxer"
2983 w64_demuxer_select="wav_demuxer"
2984 w64_muxer_select="wav_muxer"
2985 wav_demuxer_select="riffdec"
2986 wav_muxer_select="riffenc"
2987 webm_muxer_select="iso_media riffenc"
2988 webm_dash_manifest_demuxer_select="matroska_demuxer"
2989 wtv_demuxer_select="mpegts_demuxer riffdec"
2990 wtv_muxer_select="mpegts_muxer riffenc"
2991 xmv_demuxer_select="riffdec"
2992 xwma_demuxer_select="riffdec"
2993
2994 # indevs / outdevs
2995 alsa_indev_deps="alsa"
2996 alsa_outdev_deps="alsa"
2997 avfoundation_indev_deps="pthreads"
2998 avfoundation_indev_extralibs="-framework Foundation -framework AVFoundation -framework CoreVideo -framework CoreMedia"
2999 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3000 caca_outdev_deps="libcaca"
3001 decklink_indev_deps="decklink threads"
3002 decklink_indev_extralibs="-lstdc++"
3003 decklink_outdev_deps="decklink threads"
3004 decklink_outdev_extralibs="-lstdc++"
3005 dshow_indev_deps="IBaseFilter"
3006 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3007 dv1394_indev_deps="dv1394"
3008 dv1394_indev_select="dv_demuxer"
3009 fbdev_indev_deps="linux_fb_h"
3010 fbdev_outdev_deps="linux_fb_h"
3011 gdigrab_indev_deps="CreateDIBSection"
3012 gdigrab_indev_extralibs="-lgdi32"
3013 gdigrab_indev_select="bmp_decoder"
3014 iec61883_indev_deps="libiec61883"
3015 jack_indev_deps="jack"
3016 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3017 lavfi_indev_deps="avfilter"
3018 libcdio_indev_deps="libcdio"
3019 libdc1394_indev_deps="libdc1394"
3020 libv4l2_indev_deps="libv4l2"
3021 openal_indev_deps="openal"
3022 opengl_outdev_deps="opengl"
3023 oss_indev_deps_any="soundcard_h sys_soundcard_h"
3024 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
3025 pulse_indev_deps="libpulse"
3026 pulse_outdev_deps="libpulse"
3027 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
3028 qtkit_indev_select="qtkit"
3029 sdl2_outdev_deps="sdl2"
3030 sndio_indev_deps="sndio"
3031 sndio_outdev_deps="sndio"
3032 v4l_indev_deps="linux_videodev_h"
3033 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3034 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3035 vfwcap_indev_deps="vfw32 vfwcap_defines"
3036 xcbgrab_indev_deps="libxcb"
3037 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3038 xv_outdev_extralibs="-lXv -lX11 -lXext"
3039
3040 # protocols
3041 async_protocol_deps="threads"
3042 bluray_protocol_deps="libbluray"
3043 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
3044 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3045 ffrtmpcrypt_protocol_select="tcp_protocol"
3046 ffrtmphttp_protocol_deps="!librtmp_protocol"
3047 ffrtmphttp_protocol_select="http_protocol"
3048 ftp_protocol_select="tcp_protocol"
3049 gopher_protocol_select="network"
3050 http_protocol_select="tcp_protocol"
3051 httpproxy_protocol_select="tcp_protocol"
3052 https_protocol_select="tls_protocol"
3053 icecast_protocol_select="http_protocol"
3054 librtmp_protocol_deps="librtmp"
3055 librtmpe_protocol_deps="librtmp"
3056 librtmps_protocol_deps="librtmp"
3057 librtmpt_protocol_deps="librtmp"
3058 librtmpte_protocol_deps="librtmp"
3059 libsmbclient_protocol_deps="libsmbclient gplv3"
3060 libssh_protocol_deps="libssh"
3061 mmsh_protocol_select="http_protocol"
3062 mmst_protocol_select="network"
3063 rtmp_protocol_deps="!librtmp_protocol"
3064 rtmp_protocol_select="tcp_protocol"
3065 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3066 rtmps_protocol_deps="!librtmp_protocol"
3067 rtmps_protocol_select="tls_protocol"
3068 rtmpt_protocol_select="ffrtmphttp_protocol"
3069 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3070 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3071 rtp_protocol_select="udp_protocol"
3072 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3073 sctp_protocol_select="network"
3074 srtp_protocol_select="rtp_protocol srtp"
3075 tcp_protocol_select="network"
3076 tls_gnutls_protocol_deps="gnutls !tls_schannel_protocol !tls_securetransport_protocol"
3077 tls_gnutls_protocol_select="tcp_protocol"
3078 tls_openssl_protocol_deps="openssl !tls_schannel_protocol !tls_securetransport_protocol !tls_gnutls_protocol"
3079 tls_openssl_protocol_select="tcp_protocol"
3080 tls_schannel_protocol_deps="schannel"
3081 tls_schannel_protocol_select="tcp_protocol"
3082 tls_securetransport_protocol_deps="securetransport"
3083 tls_securetransport_protocol_select="tcp_protocol"
3084 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
3085 udp_protocol_select="network"
3086 udplite_protocol_select="network"
3087 unix_protocol_deps="sys_un_h"
3088 unix_protocol_select="network"
3089
3090 # filters
3091 afftfilt_filter_deps="avcodec"
3092 afftfilt_filter_select="fft"
3093 afir_filter_deps="avcodec"
3094 afir_filter_select="fft"
3095 amovie_filter_deps="avcodec avformat"
3096 aresample_filter_deps="swresample"
3097 ass_filter_deps="libass"
3098 atempo_filter_deps="avcodec"
3099 atempo_filter_select="rdft"
3100 azmq_filter_deps="libzmq"
3101 blackframe_filter_deps="gpl"
3102 boxblur_filter_deps="gpl"
3103 bs2b_filter_deps="libbs2b"
3104 colormatrix_filter_deps="gpl"
3105 cover_rect_filter_deps="avcodec avformat gpl"
3106 cropdetect_filter_deps="gpl"
3107 deinterlace_qsv_filter_deps="libmfx"
3108 deinterlace_vaapi_filter_deps="vaapi"
3109 delogo_filter_deps="gpl"
3110 deshake_filter_select="pixelutils"
3111 drawtext_filter_deps="libfreetype"
3112 elbg_filter_deps="avcodec"
3113 eq_filter_deps="gpl"
3114 fftfilt_filter_deps="avcodec"
3115 fftfilt_filter_select="rdft"
3116 find_rect_filter_deps="avcodec avformat gpl"
3117 firequalizer_filter_deps="avcodec"
3118 firequalizer_filter_select="rdft"
3119 flite_filter_deps="libflite"
3120 framerate_filter_select="pixelutils"
3121 frei0r_filter_deps="frei0r dlopen"
3122 frei0r_src_filter_deps="frei0r dlopen"
3123 fspp_filter_deps="gpl"
3124 geq_filter_deps="gpl"
3125 histeq_filter_deps="gpl"
3126 hqdn3d_filter_deps="gpl"
3127 interlace_filter_deps="gpl"
3128 kerndeint_filter_deps="gpl"
3129 ladspa_filter_deps="ladspa dlopen"
3130 mcdeint_filter_deps="avcodec gpl"
3131 movie_filter_deps="avcodec avformat"
3132 mpdecimate_filter_deps="gpl"
3133 mpdecimate_filter_select="pixelutils"
3134 mptestsrc_filter_deps="gpl"
3135 negate_filter_deps="lut_filter"
3136 nnedi_filter_deps="gpl"
3137 ocr_filter_deps="libtesseract"
3138 ocv_filter_deps="libopencv"
3139 owdenoise_filter_deps="gpl"
3140 pan_filter_deps="swresample"
3141 perspective_filter_deps="gpl"
3142 phase_filter_deps="gpl"
3143 pp7_filter_deps="gpl"
3144 pp_filter_deps="gpl postproc"
3145 pullup_filter_deps="gpl"
3146 removelogo_filter_deps="avcodec avformat swscale"
3147 repeatfields_filter_deps="gpl"
3148 resample_filter_deps="avresample"
3149 rubberband_filter_deps="librubberband"
3150 sab_filter_deps="gpl swscale"
3151 scale2ref_filter_deps="swscale"
3152 scale_filter_deps="swscale"
3153 scale_qsv_filter_deps="libmfx"
3154 select_filter_select="pixelutils"
3155 showcqt_filter_deps="avcodec avformat swscale"
3156 showcqt_filter_select="fft"
3157 showfreqs_filter_deps="avcodec"
3158 showfreqs_filter_select="fft"
3159 showspectrum_filter_deps="avcodec"
3160 showspectrum_filter_select="fft"
3161 showspectrumpic_filter_deps="avcodec"
3162 showspectrumpic_filter_select="fft"
3163 signature_filter_deps="gpl avcodec avformat"
3164 smartblur_filter_deps="gpl swscale"
3165 sofalizer_filter_deps="netcdf avcodec"
3166 sofalizer_filter_select="fft"
3167 spectrumsynth_filter_deps="avcodec"
3168 spectrumsynth_filter_select="fft"
3169 spp_filter_deps="gpl avcodec"
3170 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3171 stereo3d_filter_deps="gpl"
3172 subtitles_filter_deps="avformat avcodec libass"
3173 super2xsai_filter_deps="gpl"
3174 pixfmts_super2xsai_test_deps="super2xsai_filter"
3175 tinterlace_filter_deps="gpl"
3176 tinterlace_merge_test_deps="tinterlace_filter"
3177 tinterlace_pad_test_deps="tinterlace_filter"
3178 uspp_filter_deps="gpl avcodec"
3179 vaguedenoiser_filter_deps="gpl"
3180 vidstabdetect_filter_deps="libvidstab"
3181 vidstabtransform_filter_deps="libvidstab"
3182 zmq_filter_deps="libzmq"
3183 zoompan_filter_deps="swscale"
3184 zscale_filter_deps="libzimg"
3185 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3186
3187 # examples
3188 avio_dir_cmd_deps="avformat avutil"
3189 avio_reading_deps="avformat avcodec avutil"
3190 decode_audio_example_deps="avcodec avutil"
3191 decode_video_example_deps="avcodec avutil"
3192 demuxing_decoding_example_deps="avcodec avformat avutil"
3193 encode_audio_example_deps="avcodec avutil"
3194 encode_video_example_deps="avcodec avutil"
3195 extract_mvs_example_deps="avcodec avformat avutil"
3196 filter_audio_example_deps="avfilter avutil"
3197 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3198 filtering_video_example_deps="avfilter avcodec avformat avutil"
3199 http_multiclient_example_deps="avformat avutil fork"
3200 metadata_example_deps="avformat avutil"
3201 muxing_example_deps="avcodec avformat avutil swscale"
3202 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3203 remuxing_example_deps="avcodec avformat avutil"
3204 resampling_audio_example_deps="avutil swresample"
3205 scaling_video_example_deps="avutil swscale"
3206 transcode_aac_example_deps="avcodec avformat swresample"
3207 transcoding_example_deps="avfilter avcodec avformat avutil"
3208
3209 # libraries, in linking order
3210 avcodec_deps="avutil"
3211 avcodec_select="null_bsf"
3212 avdevice_deps="avformat avcodec avutil"
3213 avfilter_deps="avutil"
3214 avformat_deps="avcodec avutil"
3215 avresample_deps="avutil"
3216 postproc_deps="avutil gpl"
3217 swresample_deps="avutil"
3218 swscale_deps="avutil"
3219
3220 # programs
3221 ffmpeg_deps="avcodec avfilter avformat swresample"
3222 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3223                null_filter
3224                trim_filter"
3225 ffplay_deps="avcodec avformat swscale swresample sdl2"
3226 ffplay_extralibs='$sdl2_extralibs'
3227 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3228 ffprobe_deps="avcodec avformat"
3229 ffserver_deps="avformat fork sarestart"
3230 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3231
3232 # documentation
3233 podpages_deps="perl"
3234 manpages_deps="perl pod2man"
3235 htmlpages_deps="perl"
3236 htmlpages_deps_any="makeinfo_html texi2html"
3237 txtpages_deps="perl makeinfo"
3238 doc_deps_any="manpages htmlpages podpages txtpages"
3239
3240 # default parameters
3241
3242 logfile="ffbuild/config.log"
3243
3244 # installation paths
3245 prefix_default="/usr/local"
3246 bindir_default='${prefix}/bin'
3247 datadir_default='${prefix}/share/ffmpeg'
3248 docdir_default='${prefix}/share/doc/ffmpeg'
3249 incdir_default='${prefix}/include'
3250 libdir_default='${prefix}/lib'
3251 mandir_default='${prefix}/share/man'
3252
3253 # toolchain
3254 ar_default="ar"
3255 cc_default="gcc"
3256 cxx_default="g++"
3257 host_cc_default="gcc"
3258 doxygen_default="doxygen"
3259 install="install"
3260 ln_s_default="ln -s -f"
3261 nm_default="nm -g"
3262 objformat="elf"
3263 pkg_config_default=pkg-config
3264 ranlib_default="ranlib"
3265 strip_default="strip"
3266 version_script='--version-script'
3267 yasmexe_default="yasm"
3268 windres_default="windres"
3269 nvcc_default="nvcc"
3270 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3271
3272 # OS
3273 target_os_default=$(tolower $(uname -s))
3274 host_os=$target_os_default
3275
3276 # machine
3277 if test "$target_os_default" = aix; then
3278     arch_default=$(uname -p)
3279     strip_default="strip -X32_64"
3280 else
3281     arch_default=$(uname -m)
3282 fi
3283 cpu="generic"
3284 intrinsics="none"
3285
3286 # configurable options
3287 enable $PROGRAM_LIST
3288 enable $DOCUMENT_LIST
3289 enable $EXAMPLE_LIST
3290 enable $(filter_out avresample $LIBRARY_LIST)
3291 enable stripping
3292
3293 enable asm
3294 enable debug
3295 enable doc
3296 enable faan faandct faanidct
3297 enable optimizations
3298 enable runtime_cpudetect
3299 enable safe_bitstream_reader
3300 enable static
3301 enable swscale_alpha
3302 enable valgrind_backtrace
3303
3304 sws_max_filter_size_default=256
3305 set_default sws_max_filter_size
3306
3307 # build settings
3308 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3309 LIBPREF="lib"
3310 LIBSUF=".a"
3311 FULLNAME='$(NAME)$(BUILDSUF)'
3312 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3313 SLIBPREF="lib"
3314 SLIBSUF=".so"
3315 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3316 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3317 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3318 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3319 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3320 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3321 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3322
3323 asflags_filter=echo
3324 cflags_filter=echo
3325 ldflags_filter=echo
3326
3327 AS_C='-c'
3328 AS_O='-o $@'
3329 CC_C='-c'
3330 CC_E='-E -o $@'
3331 CC_O='-o $@'
3332 CXX_C='-c'
3333 CXX_O='-o $@'
3334 OBJCC_C='-c'
3335 OBJCC_E='-E -o $@'
3336 OBJCC_O='-o $@'
3337 LD_O='-o $@'
3338 LD_LIB='-l%'
3339 LD_PATH='-L'
3340 HOSTCC_C='-c'
3341 HOSTCC_E='-E -o $@'
3342 HOSTCC_O='-o $@'
3343 HOSTLD_O='-o $@'
3344 NVCC_C='-c'
3345 NVCC_O='-o $@'
3346
3347 host_extralibs='-lm'
3348 host_cflags_filter=echo
3349 host_ldflags_filter=echo
3350
3351 target_path='$(CURDIR)'
3352
3353 # since the object filename is not given with the -MM flag, the compiler
3354 # is only able to print the basename, and we must add the path ourselves
3355 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3356 DEPFLAGS='-MM'
3357
3358 # find source path
3359 if test -f configure; then
3360     source_path=.
3361 else
3362     source_path=$(cd $(dirname "$0"); pwd)
3363     case "$source_path" in
3364         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3365     esac
3366     test -e "$source_path/config.h" &&
3367         die "Out of tree builds are impossible with config.h in source dir."
3368 fi
3369
3370 for v in "$@"; do
3371     r=${v#*=}
3372     l=${v%"$r"}
3373     r=$(sh_quote "$r")
3374     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3375 done
3376
3377 find_things(){
3378     thing=$1
3379     pattern=$2
3380     file=$source_path/$3
3381     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3382 }
3383
3384 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3385 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3386 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3387 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3388 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3389 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3390 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3391 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3392 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3393
3394 find_things_extern(){
3395     thing=$1
3396     pattern=$2
3397     file=$source_path/$3
3398     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3399 }
3400
3401 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3402 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3403
3404 ALL_COMPONENTS="
3405     $BSF_LIST
3406     $DECODER_LIST
3407     $DEMUXER_LIST
3408     $ENCODER_LIST
3409     $FILTER_LIST
3410     $HWACCEL_LIST
3411     $INDEV_LIST
3412     $MUXER_LIST
3413     $OUTDEV_LIST
3414     $PARSER_LIST
3415     $PROTOCOL_LIST
3416 "
3417
3418 for n in $COMPONENT_LIST; do
3419     v=$(toupper ${n%s})_LIST
3420     eval enable \$$v
3421     eval ${n}_if_any="\$$v"
3422 done
3423
3424 enable $ARCH_EXT_LIST
3425
3426 die_unknown(){
3427     echo "Unknown option \"$1\"."
3428     echo "See $0 --help for available options."
3429     exit 1
3430 }
3431
3432 print_in_columns() {
3433     cols=$(expr $ncols / 24)
3434     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3435 }
3436
3437 show_list() {
3438     suffix=_$1
3439     shift
3440     echo $* | sed s/$suffix//g | print_in_columns
3441     exit 0
3442 }
3443
3444 rand_list(){
3445     IFS=', '
3446     set -- $*
3447     unset IFS
3448     for thing; do
3449         comp=${thing%:*}
3450         prob=${thing#$comp}
3451         prob=${prob#:}
3452         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3453         echo "prob ${prob:-0.5}"
3454         printf '%s\n' $comp
3455     done
3456 }
3457
3458 do_random(){
3459     action=$1
3460     shift
3461     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3462     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3463 }
3464
3465 for opt do
3466     optval="${opt#*=}"
3467     case "$opt" in
3468         --extra-ldflags=*)
3469             add_ldflags $optval
3470         ;;
3471         --extra-ldexeflags=*)
3472             add_ldexeflags $optval
3473         ;;
3474         --extra-ldlibflags=*)
3475             add_ldlibflags $optval
3476         ;;
3477         --extra-libs=*)
3478             add_extralibs $optval
3479         ;;
3480         --disable-devices)
3481             disable $INDEV_LIST $OUTDEV_LIST
3482         ;;
3483         --enable-debug=*)
3484             debuglevel="$optval"
3485         ;;
3486         --disable-programs)
3487             disable $PROGRAM_LIST
3488         ;;
3489         --disable-everything)
3490             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3491         ;;
3492         --disable-all)
3493             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3494             disable $LIBRARY_LIST $PROGRAM_LIST doc
3495             enable avutil
3496         ;;
3497         --enable-random|--disable-random)
3498             action=${opt%%-random}
3499             do_random ${action#--} $COMPONENT_LIST
3500         ;;
3501         --enable-random=*|--disable-random=*)
3502             action=${opt%%-random=*}
3503             do_random ${action#--} $optval
3504         ;;
3505         --enable-*=*|--disable-*=*)
3506             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3507             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3508             eval list=\$$(toupper $thing)_LIST
3509             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3510             list=$(filter "$name" $list)
3511             [ "$list" = "" ] && warn "Option $opt did not match anything"
3512             $action $list
3513         ;;
3514         --enable-?*|--disable-?*)
3515             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3516             if is_in $option $COMPONENT_LIST; then
3517                 test $action = disable && action=unset
3518                 eval $action \$$(toupper ${option%s})_LIST
3519             elif is_in $option $CMDLINE_SELECT; then
3520                 $action $option
3521             else
3522                 die_unknown $opt
3523             fi
3524         ;;
3525         --list-*)
3526             NAME="${opt#--list-}"
3527             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3528             NAME=${NAME%s}
3529             eval show_list $NAME \$$(toupper $NAME)_LIST
3530         ;;
3531         --help|-h) show_help
3532         ;;
3533         --quiet|-q) quiet=yes
3534         ;;
3535         --fatal-warnings) enable fatal_warnings
3536         ;;
3537         --libfuzzer=*)
3538             libfuzzer_path="$optval"
3539         ;;
3540         *)
3541             optname="${opt%%=*}"
3542             optname="${optname#--}"
3543             optname=$(echo "$optname" | sed 's/-/_/g')
3544             if is_in $optname $CMDLINE_SET; then
3545                 eval $optname='$optval'
3546             elif is_in $optname $CMDLINE_APPEND; then
3547                 append $optname "$optval"
3548             else
3549                 die_unknown $opt
3550             fi
3551         ;;
3552     esac
3553 done
3554
3555 for e in $env; do
3556     eval "export $e"
3557 done
3558
3559 # Mark specifically enabled, but normally autodetected libraries as requested.
3560 for lib in $AUTODETECT_LIBS; do
3561     enabled $lib && request $lib
3562 done
3563
3564 # Enable platform codecs by default.
3565 enable_weak audiotoolbox
3566
3567 # Enable hwaccels by default.
3568 enable_weak d3d11va dxva2 vaapi vda vdpau videotoolbox_hwaccel xvmc
3569 enable_weak xlib
3570
3571 enable_weak cuda cuvid nvenc vda_framework videotoolbox videotoolbox_encoder
3572
3573 disabled logging && logfile=/dev/null
3574
3575 die_license_disabled() {
3576     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3577 }
3578
3579 die_license_disabled_gpl() {
3580     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3581 }
3582
3583 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3584 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3585
3586 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3587 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3588
3589 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3590
3591 # Disable all the library-specific components if the library itself
3592 # is disabled, see AVCODEC_LIST and following _LIST variables.
3593
3594 disable_components(){
3595     disabled ${1} && disable $(
3596         eval components="\$$(toupper ${1})_COMPONENTS"
3597         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3598     )
3599 }
3600
3601 map 'disable_components $v' $LIBRARY_LIST
3602
3603 mkdir -p ffbuild
3604 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3605 set >> $logfile
3606
3607 test -n "$valgrind" && toolchain="valgrind-memcheck"
3608
3609 enabled ossfuzz && {
3610     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
3611     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
3612 }
3613
3614 case "$toolchain" in
3615     *-asan)
3616         cc_default="${toolchain%-asan}"
3617         add_cflags  -fsanitize=address
3618         add_ldflags -fsanitize=address
3619     ;;
3620     *-msan)
3621         cc_default="${toolchain%-msan}"
3622         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3623         add_ldflags -fsanitize=memory
3624     ;;
3625     *-tsan)
3626         cc_default="${toolchain%-tsan}"
3627         add_cflags  -fsanitize=thread -fPIE
3628         add_ldflags -fsanitize=thread -pie
3629         case "$toolchain" in
3630             gcc-tsan)
3631                 add_cflags  -fPIC
3632                 add_ldflags -fPIC
3633                 ;;
3634         esac
3635     ;;
3636     *-usan)
3637         cc_default="${toolchain%-usan}"
3638         add_cflags  -fsanitize=undefined
3639         add_ldflags -fsanitize=undefined
3640     ;;
3641     valgrind-*)
3642         target_exec_default="valgrind"
3643         case "$toolchain" in
3644             valgrind-massif)
3645                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3646                 ;;
3647             valgrind-memcheck)
3648                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3649                 ;;
3650         esac
3651     ;;
3652     msvc)
3653         # Check whether the current MSVC version needs the C99 converter.
3654         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3655         # support enough of C99 to build ffmpeg. Default to the new
3656         # behaviour if the regexp was unable to match anything, since this
3657         # successfully parses the version number of existing supported
3658         # versions that require the converter (MSVC 2010 and 2012).
3659         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3660         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3661             cc_default="cl"
3662             cxx_default="cl"
3663         else
3664             cc_default="c99wrap cl"
3665             cxx_default="c99wrap cl"
3666         fi
3667         ld_default="$source_path/compat/windows/mslink"
3668         nm_default="dumpbin -symbols"
3669         ar_default="lib"
3670         case "$arch" in
3671         arm*)
3672             as_default="armasm"
3673             ;;
3674         esac
3675         target_os_default="win32"
3676         # Use a relative path for TMPDIR. This makes sure all the
3677         # ffconf temp files are written with a relative path, avoiding
3678         # issues with msys/win32 path conversion for MSVC parameters
3679         # such as -Fo<file> or -out:<file>.
3680         TMPDIR=.
3681     ;;
3682     icl)
3683         cc_default="icl"
3684         ld_default="xilink"
3685         nm_default="dumpbin -symbols"
3686         ar_default="xilib"
3687         target_os_default="win32"
3688         TMPDIR=.
3689     ;;
3690     gcov)
3691         add_cflags  -fprofile-arcs -ftest-coverage
3692         add_ldflags -fprofile-arcs -ftest-coverage
3693     ;;
3694     llvm-cov)
3695         add_cflags -fprofile-arcs -ftest-coverage
3696         add_ldflags --coverage
3697     ;;
3698     hardened)
3699         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3700         add_cflags   -fno-strict-overflow -fstack-protector-all
3701         add_ldflags  -Wl,-z,relro -Wl,-z,now
3702         add_cflags   -fPIE
3703         add_ldexeflags -fPIE -pie
3704     ;;
3705     ?*)
3706         die "Unknown toolchain $toolchain"
3707     ;;
3708 esac
3709
3710 test -n "$cross_prefix" && enable cross_compile
3711
3712 if enabled cross_compile; then
3713     test -n "$arch" && test -n "$target_os" ||
3714         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3715 fi
3716
3717 ar_default="${cross_prefix}${ar_default}"
3718 cc_default="${cross_prefix}${cc_default}"
3719 cxx_default="${cross_prefix}${cxx_default}"
3720 nm_default="${cross_prefix}${nm_default}"
3721 pkg_config_default="${cross_prefix}${pkg_config_default}"
3722 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3723     ranlib_default="${cross_prefix}${ranlib_default} -D"
3724 else
3725     ranlib_default="${cross_prefix}${ranlib_default}"
3726 fi
3727 strip_default="${cross_prefix}${strip_default}"
3728 windres_default="${cross_prefix}${windres_default}"
3729
3730 sysinclude_default="${sysroot}/usr/include"
3731
3732 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3733     target_exec target_os yasmexe nvcc
3734 enabled cross_compile || host_cc_default=$cc
3735 set_default host_cc
3736
3737 pkg_config_fail_message=""
3738 if ! $pkg_config --version >/dev/null 2>&1; then
3739     warn "$pkg_config not found, library detection may fail."
3740     pkg_config=false
3741 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3742     pkg_config_fail_message="
3743 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3744 fi
3745
3746 if test $doxygen != $doxygen_default && \
3747   ! $doxygen --version >/dev/null 2>&1; then
3748     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3749 fi
3750
3751 exesuf() {
3752     case $1 in
3753         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3754     esac
3755 }
3756
3757 EXESUF=$(exesuf $target_os)
3758 HOSTEXESUF=$(exesuf $host_os)
3759
3760 # set temporary file name
3761 : ${TMPDIR:=$TEMPDIR}
3762 : ${TMPDIR:=$TMP}
3763 : ${TMPDIR:=/tmp}
3764
3765 if [ -n "$tempprefix" ] ; then
3766     mktemp(){
3767         echo $tempprefix.${HOSTNAME}.${UID}
3768     }
3769 elif ! check_cmd mktemp -u XXXXXX; then
3770     # simple replacement for missing mktemp
3771     # NOT SAFE FOR GENERAL USE
3772     mktemp(){
3773         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3774     }
3775 fi
3776
3777 tmpfile(){
3778     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3779         (set -C; exec > $tmp) 2>/dev/null ||
3780         die "Unable to create temporary file in $TMPDIR."
3781     append TMPFILES $tmp
3782     eval $1=$tmp
3783 }
3784
3785 trap 'rm -f -- $TMPFILES' EXIT
3786
3787 tmpfile TMPASM .asm
3788 tmpfile TMPC   .c
3789 tmpfile TMPCPP .cpp
3790 tmpfile TMPE   $EXESUF
3791 tmpfile TMPH   .h
3792 tmpfile TMPM   .m
3793 tmpfile TMPO   .o
3794 tmpfile TMPS   .S
3795 tmpfile TMPSH  .sh
3796 tmpfile TMPV   .ver
3797
3798 unset -f mktemp
3799
3800 chmod +x $TMPE
3801
3802 # make sure we can execute files in $TMPDIR
3803 cat > $TMPSH 2>> $logfile <<EOF
3804 #! /bin/sh
3805 EOF
3806 chmod +x $TMPSH >> $logfile 2>&1
3807 if ! $TMPSH >> $logfile 2>&1; then
3808     cat <<EOF
3809 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3810 variable to another directory and make sure that it is not mounted noexec.
3811 EOF
3812     die "Sanity test failed."
3813 fi
3814
3815 armasm_flags(){
3816     for flag; do
3817         case $flag in
3818             # Filter out MSVC cl.exe options from cflags that shouldn't
3819             # be passed to gas-preprocessor
3820             -M[TD]*)                                            ;;
3821             *)                  echo $flag                      ;;
3822         esac
3823    done
3824 }
3825
3826 ccc_flags(){
3827     for flag; do
3828         case $flag in
3829             -std=c99)           echo -c99                       ;;
3830             -mcpu=*)            echo -arch ${flag#*=}           ;;
3831             -mieee)             echo -ieee                      ;;
3832             -O*|-fast)          echo $flag                      ;;
3833             -fno-math-errno)    echo -assume nomath_errno       ;;
3834             -g)                 echo -g3                        ;;
3835             -Wall)              echo -msg_enable level2         ;;
3836             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3837             -Wl,*)              echo $flag                      ;;
3838             -f*|-W*)                                            ;;
3839             *)                  echo $flag                      ;;
3840         esac
3841    done
3842 }
3843
3844 cparser_flags(){
3845     for flag; do
3846         case $flag in
3847             -Wno-switch)             echo -Wno-switch-enum ;;
3848             -Wno-format-zero-length) ;;
3849             -Wdisabled-optimization) ;;
3850             -Wno-pointer-sign)       echo -Wno-other ;;
3851             *)                       echo $flag ;;
3852         esac
3853     done
3854 }
3855
3856 msvc_common_flags(){
3857     for flag; do
3858         case $flag in
3859             # In addition to specifying certain flags under the compiler
3860             # specific filters, they must be specified here as well or else the
3861             # generic catch all at the bottom will print the original flag.
3862             -Wall)                ;;
3863             -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 $flag in
3888             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3889                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3890                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3891                                        -wd4307 \
3892                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
3893         esac
3894     done
3895 }
3896
3897 icl_flags(){
3898     msvc_common_flags "$@"
3899     for flag; do
3900         case $flag in
3901             # Despite what Intel's documentation says -Wall, which is supported
3902             # on Windows, does enable remarks so disable them here.
3903             -Wall)                echo $flag -Qdiag-disable:remark ;;
3904             -std=c99)             echo -Qstd=c99 ;;
3905             -flto)                echo -ipo ;;
3906         esac
3907     done
3908 }
3909
3910 icc_flags(){
3911     for flag; do
3912         case $flag in
3913             -flto)                echo -ipo ;;
3914             *)                    echo $flag ;;
3915         esac
3916     done
3917 }
3918
3919 pgi_flags(){
3920     for flag; do
3921         case $flag in
3922             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3923             -fomit-frame-pointer) echo -Mnoframe ;;
3924             -g)                   echo -gopt ;;
3925             *)                    echo $flag ;;
3926         esac
3927     done
3928 }
3929
3930 suncc_flags(){
3931     for flag; do
3932         case $flag in
3933             -march=*|-mcpu=*)
3934                 case "${flag#*=}" in
3935                     native)                   echo -xtarget=native       ;;
3936                     v9|niagara)               echo -xarch=sparc          ;;
3937                     ultrasparc)               echo -xarch=sparcvis       ;;
3938                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3939                     i586|pentium)             echo -xchip=pentium        ;;
3940                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3941                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3942                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3943                     pentium4*)          echo -xtarget=pentium4           ;;
3944                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3945                     *-sse3)             echo -xarch=sse3                 ;;
3946                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3947                     bonnell)                   echo -xarch=ssse3         ;;
3948                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3949                     westmere)                  echo -xtarget=westmere    ;;
3950                     silvermont)                echo -xarch=sse4_2        ;;
3951                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3952                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
3953                                                echo -xarch=avx           ;;
3954                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3955                     btver1)                    echo -xarch=amdsse4a      ;;
3956                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
3957                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3958                     k8|opteron|athlon64|athlon-fx)
3959                                                echo -xarch=sse2a         ;;
3960                     athlon*)                   echo -xarch=pentium_proa  ;;
3961                 esac
3962                 ;;
3963             -std=c99)             echo -xc99              ;;
3964             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3965             -fPIC)                echo -KPIC -xcode=pic32 ;;
3966             -W*,*)                echo $flag              ;;
3967             -f*-*|-W*|-mimpure-text)                      ;;
3968             -shared)              echo -G                 ;;
3969             *)                    echo $flag              ;;
3970         esac
3971     done
3972 }
3973
3974 tms470_flags(){
3975     for flag; do
3976         case $flag in
3977             -march=*|-mcpu=*)
3978                 case "${flag#*=}" in
3979                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3980                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3981                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3982                     armv6*|arm11*)          echo -mv=6   ;;
3983                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3984                                             echo -mv=5e  ;;
3985                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3986                 esac
3987                 ;;
3988             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3989             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3990             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3991             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3992             -msoft-float)   echo --float_support=vfplib       ;;
3993             -O[0-3]|-mf=*)  echo $flag                        ;;
3994             -g)             echo -g -mn                       ;;
3995             -pds=*)         echo $flag                        ;;
3996             -D*|-I*)        echo $flag                        ;;
3997             --gcc|--abi=*)  echo $flag                        ;;
3998             -me)            echo $flag                        ;;
3999         esac
4000     done
4001 }
4002
4003 probe_cc(){
4004     pfx=$1
4005     _cc=$2
4006     first=$3
4007
4008     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4009     unset _ld_o _ldflags _ld_lib _ld_path
4010     unset _depflags _DEPCMD _DEPFLAGS
4011     _flags_filter=echo
4012
4013     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4014         true # no-op to avoid reading stdin in following checks
4015     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4016         _type=llvm_gcc
4017         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4018         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4019         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4020         _cflags_speed='-O3'
4021         _cflags_size='-Os'
4022     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4023         _type=gcc
4024         gcc_version=$($_cc --version | head -n1)
4025         gcc_basever=$($_cc -dumpversion)
4026         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4027         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4028         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4029         case $gcc_basever in
4030             2) ;;
4031             2.*) ;;
4032             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4033         esac
4034         if [ "$first" = true ]; then
4035             case $gcc_basever in
4036                 4.2*)
4037                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4038             esac
4039         fi
4040         _cflags_speed='-O3'
4041         _cflags_size='-Os'
4042     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4043         _type=icc
4044         _ident=$($_cc --version | head -n1)
4045         _depflags='-MMD'
4046         _cflags_speed='-O3'
4047         _cflags_size='-Os'
4048         _cflags_noopt='-O1'
4049         _flags_filter=icc_flags
4050     elif $_cc -v 2>&1 | grep -q xlc; then
4051         _type=xlc
4052         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4053         _cflags_speed='-O5'
4054         _cflags_size='-O5 -qcompact'
4055     elif $_cc -V 2>/dev/null | grep -q Compaq; then
4056         _type=ccc
4057         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
4058         _DEPFLAGS='-M'
4059         _cflags_speed='-fast'
4060         _cflags_size='-O1'
4061         _flags_filter=ccc_flags
4062     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4063         test -d "$sysroot" || die "No valid sysroot specified."
4064         _type=armcc
4065         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4066         armcc_conf="$PWD/armcc.conf"
4067         $_cc --arm_linux_configure                 \
4068              --arm_linux_config_file="$armcc_conf" \
4069              --configure_sysroot="$sysroot"        \
4070              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4071              die "Error creating armcc configuration file."
4072         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4073         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4074         as_default="${cross_prefix}gcc"
4075         _depflags='-MMD'
4076         _cflags_speed='-O3'
4077         _cflags_size='-Os'
4078     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
4079         _type=tms470
4080         _ident=$($_cc -version | head -n1 | tr -s ' ')
4081         _flags='--gcc --abi=eabi -me'
4082         _cc_e='-ppl -fe=$@'
4083         _cc_o='-fe=$@'
4084         _depflags='-ppa -ppd=$(@:.o=.d)'
4085         _cflags_speed='-O3 -mf=5'
4086         _cflags_size='-O3 -mf=2'
4087         _flags_filter=tms470_flags
4088     elif $_cc -v 2>&1 | grep -q clang; then
4089         _type=clang
4090         _ident=$($_cc --version 2>/dev/null | head -n1)
4091         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4092         _cflags_speed='-O3'
4093         _cflags_size='-Oz'
4094     elif $_cc -V 2>&1 | grep -q Sun; then
4095         _type=suncc
4096         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4097         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4098         _DEPFLAGS='-xM1 -xc99'
4099         _ldflags='-std=c99'
4100         _cflags_speed='-O5'
4101         _cflags_size='-O5 -xspace'
4102         _flags_filter=suncc_flags
4103     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4104         _type=pathscale
4105         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4106         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4107         _cflags_speed='-O2'
4108         _cflags_size='-Os'
4109         _flags_filter='filter_out -Wdisabled-optimization'
4110     elif $_cc -v 2>&1 | grep -q Open64; then
4111         _type=open64
4112         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4113         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4114         _cflags_speed='-O2'
4115         _cflags_size='-Os'
4116         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4117     elif $_cc -V 2>&1 | grep -q Portland; then
4118         _type=pgi
4119         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
4120         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
4121         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
4122         _cflags_size="-O2 -Munroll=c:1 $opt_common"
4123         _cflags_noopt="-O"
4124         _flags_filter=pgi_flags
4125     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4126         _type=armasm
4127         _ident=$($_cc | head -n1)
4128         # 4509: "This form of conditional instruction is deprecated"
4129         _flags="-nologo -ignore 4509"
4130         _flags_filter=armasm_flags
4131     elif $_cc 2>&1 | grep -q Intel; then
4132         _type=icl
4133         _ident=$($_cc 2>&1 | head -n1)
4134         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4135         # Not only is O3 broken on 13.x+ but it is slower on all previous
4136         # versions (tested) as well.
4137         _cflags_speed="-O2"
4138         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4139         if $_cc 2>&1 | grep -q Linker; then
4140             _ld_o='-out:$@'
4141         else
4142             _ld_o='-Fe$@'
4143         fi
4144         _cc_o='-Fo$@'
4145         _cc_e='-P'
4146         _flags_filter=icl_flags
4147         _ld_lib='lib%.a'
4148         _ld_path='-libpath:'
4149         # -Qdiag-error to make icl error when seeing certain unknown arguments
4150         _flags='-nologo -Qdiag-error:4044,10157'
4151         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4152         # with MSVC which enables it by default.
4153         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4154         disable stripping
4155     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4156         # lld can emulate multiple different linkers; in ms link.exe mode,
4157         # the -? parameter gives the help output which contains an identifyable
4158         # string, while it gives an error in other modes.
4159         _type=lld-link
4160         # The link.exe mode doesn't have a switch for getting the version,
4161         # but we can force it back to gnu mode and get the version from there.
4162         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4163         _ld_o='-out:$@'
4164         _flags_filter=msvc_flags
4165         _ld_lib='lib%.a'
4166         _ld_path='-libpath:'
4167     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4168         _type=msvc
4169         _ident=$($_cc 2>&1 | head -n1)
4170         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4171         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4172         _cflags_speed="-O2"
4173         _cflags_size="-O1"
4174         _cflags_noopt="-O1"
4175         if $_cc -nologo- 2>&1 | grep -q Linker; then
4176             _ld_o='-out:$@'
4177         else
4178             _ld_o='-Fe$@'
4179         fi
4180         _cc_o='-Fo$@'
4181         _cc_e='-P -Fi$@'
4182         _flags_filter=msvc_flags
4183         _ld_lib='lib%.a'
4184         _ld_path='-libpath:'
4185         _flags='-nologo'
4186         disable stripping
4187     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4188         _type=cparser
4189         _ident=$($_cc --version | head -n1)
4190         _depflags='-MMD'
4191         _cflags_speed='-O4'
4192         _cflags_size='-O2'
4193         _flags_filter=cparser_flags
4194     fi
4195
4196     eval ${pfx}_type=\$_type
4197     eval ${pfx}_ident=\$_ident
4198 }
4199
4200 set_ccvars(){
4201     eval ${1}_C=\${_cc_c-\${${1}_C}}
4202     eval ${1}_E=\${_cc_e-\${${1}_E}}
4203     eval ${1}_O=\${_cc_o-\${${1}_O}}
4204
4205     if [ -n "$_depflags" ]; then
4206         eval ${1}_DEPFLAGS=\$_depflags
4207     else
4208         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4209         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4210         eval DEP${1}FLAGS=\$_flags
4211     fi
4212 }
4213
4214 probe_cc cc "$cc" "true"
4215 cflags_filter=$_flags_filter
4216 cflags_speed=$_cflags_speed
4217 cflags_size=$_cflags_size
4218 cflags_noopt=$_cflags_noopt
4219 add_cflags $_flags $_cflags
4220 cc_ldflags=$_ldflags
4221 set_ccvars CC
4222 set_ccvars CXX
4223
4224 probe_cc hostcc "$host_cc"
4225 host_cflags_filter=$_flags_filter
4226 add_host_cflags  $_flags $_cflags
4227 set_ccvars HOSTCC
4228
4229 test -n "$cc_type" && enable $cc_type ||
4230     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4231
4232 : ${as_default:=$cc}
4233 : ${objcc_default:=$cc}
4234 : ${dep_cc_default:=$cc}
4235 : ${ld_default:=$cc}
4236 : ${host_ld_default:=$host_cc}
4237 set_default ar as objcc dep_cc ld ln_s host_ld windres
4238
4239 probe_cc as "$as"
4240 asflags_filter=$_flags_filter
4241 add_asflags $_flags $_cflags
4242 set_ccvars AS
4243
4244 probe_cc objcc "$objcc"
4245 objcflags_filter=$_flags_filter
4246 add_objcflags $_flags $_cflags
4247 set_ccvars OBJC
4248
4249 probe_cc ld "$ld"
4250 ldflags_filter=$_flags_filter
4251 add_ldflags $_flags $_ldflags
4252 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4253 LD_O=${_ld_o-$LD_O}
4254 LD_LIB=${_ld_lib-$LD_LIB}
4255 LD_PATH=${_ld_path-$LD_PATH}
4256
4257 probe_cc hostld "$host_ld"
4258 host_ldflags_filter=$_flags_filter
4259 add_host_ldflags $_flags $_ldflags
4260 HOSTLD_O=${_ld_o-$HOSTLD_O}
4261
4262 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4263     probe_cc depcc "$dep_cc"
4264     CCDEP=${_DEPCMD:-$DEPCMD}
4265     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4266     DEPCCFLAGS=$_flags
4267 fi
4268
4269 if $ar 2>&1 | grep -q Microsoft; then
4270     arflags="-nologo"
4271     ar_o='-out:$@'
4272 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
4273     arflags="rq"
4274     ar_o='$@'
4275 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
4276     arflags='-Xany -r -c'
4277     ar_o='$@'
4278 elif $ar 2>&1 | grep -q "\[D\] "; then
4279     arflags="rcD"
4280     ar_o='$@'
4281 else
4282     arflags="rc"
4283     ar_o='$@'
4284 fi
4285
4286 add_cflags $extra_cflags
4287 add_cxxflags $extra_cxxflags
4288 add_objcflags $extra_objcflags
4289 add_asflags $extra_cflags
4290
4291 if test -n "$sysroot"; then
4292     case "$cc_type" in
4293         gcc|llvm_gcc|clang)
4294             add_cppflags --sysroot="$sysroot"
4295             add_ldflags --sysroot="$sysroot"
4296 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
4297             add_cppflags -isysroot "$sysroot"
4298             add_ldflags -isysroot "$sysroot"
4299         ;;
4300         tms470)
4301             add_cppflags -I"$sysinclude"
4302             add_ldflags  --sysroot="$sysroot"
4303         ;;
4304     esac
4305 fi
4306
4307 if test "$cpu" = host; then
4308     enabled cross_compile &&
4309         die "--cpu=host makes no sense when cross-compiling."
4310
4311     case "$cc_type" in
4312         gcc|llvm_gcc)
4313             check_native(){
4314                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4315                 sed -n "/cc1.*$1=/{
4316                             s/.*$1=\\([^ ]*\\).*/\\1/
4317                             p
4318                             q
4319                         }" $TMPE
4320             }
4321             cpu=$(check_native -march || check_native -mcpu)
4322         ;;
4323         clang)
4324             check_native(){
4325                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4326                 sed -n "/cc1.*-target-cpu /{
4327                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4328                             p
4329                             q
4330                         }" $TMPE
4331             }
4332             cpu=$(check_native -march)
4333         ;;
4334     esac
4335
4336     test "${cpu:-host}" = host &&
4337         die "--cpu=host not supported with compiler $cc"
4338 fi
4339
4340 # Deal with common $arch aliases
4341 case "$arch" in
4342     aarch64|arm64)
4343         arch="aarch64"
4344     ;;
4345     arm*|iPad*|iPhone*)
4346         arch="arm"
4347     ;;
4348     mips*|IP*)
4349         case "$arch" in
4350         *el)
4351             add_cppflags -EL
4352             add_ldflags -EL
4353         ;;
4354         *eb)
4355             add_cppflags -EB
4356             add_ldflags -EB
4357         ;;
4358         esac
4359         arch="mips"
4360     ;;
4361     parisc*|hppa*)
4362         arch="parisc"
4363     ;;
4364     "Power Macintosh"|ppc*|powerpc*)
4365         arch="ppc"
4366     ;;
4367     s390|s390x)
4368         arch="s390"
4369     ;;
4370     sh4|sh)
4371         arch="sh4"
4372     ;;
4373     sun4*|sparc*)
4374         arch="sparc"
4375     ;;
4376     tilegx|tile-gx)
4377         arch="tilegx"
4378     ;;
4379     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4380         arch="x86"
4381     ;;
4382 esac
4383
4384 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4385 enable $arch
4386
4387 # Add processor-specific flags
4388 if enabled aarch64; then
4389
4390     case $cpu in
4391         armv*)
4392             cpuflags="-march=$cpu"
4393         ;;
4394         *)
4395             cpuflags="-mcpu=$cpu"
4396         ;;
4397     esac
4398
4399 elif enabled alpha; then
4400
4401     cpuflags="-mcpu=$cpu"
4402
4403 elif enabled arm; then
4404
4405     check_arm_arch() {
4406         check_cpp_condition stddef.h \
4407             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4408             $cpuflags
4409     }
4410
4411     probe_arm_arch() {
4412         if   check_arm_arch 4;        then echo armv4
4413         elif check_arm_arch 4T;       then echo armv4t
4414         elif check_arm_arch 5;        then echo armv5
4415         elif check_arm_arch 5E;       then echo armv5e
4416         elif check_arm_arch 5T;       then echo armv5t
4417         elif check_arm_arch 5TE;      then echo armv5te
4418         elif check_arm_arch 5TEJ;     then echo armv5te
4419         elif check_arm_arch 6;        then echo armv6
4420         elif check_arm_arch 6J;       then echo armv6j
4421         elif check_arm_arch 6K;       then echo armv6k
4422         elif check_arm_arch 6Z;       then echo armv6z
4423         elif check_arm_arch 6ZK;      then echo armv6zk
4424         elif check_arm_arch 6T2;      then echo armv6t2
4425         elif check_arm_arch 7;        then echo armv7
4426         elif check_arm_arch 7A  7_A;  then echo armv7-a
4427         elif check_arm_arch 7S;       then echo armv7-a
4428         elif check_arm_arch 7R  7_R;  then echo armv7-r
4429         elif check_arm_arch 7M  7_M;  then echo armv7-m
4430         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4431         elif check_arm_arch 8A  8_A;  then echo armv8-a
4432         fi
4433     }
4434
4435     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4436
4437     case $cpu in
4438         armv*)
4439             cpuflags="-march=$cpu"
4440             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4441         ;;
4442         *)
4443             cpuflags="-mcpu=$cpu"
4444             case $cpu in
4445                 cortex-a*)                               subarch=armv7a  ;;
4446                 cortex-r*)                               subarch=armv7r  ;;
4447                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4448                 arm11*)                                  subarch=armv6   ;;
4449                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4450                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4451                 *)                             subarch=$(probe_arm_arch) ;;
4452             esac
4453         ;;
4454     esac
4455
4456     case "$subarch" in
4457         armv5t*)    enable fast_clz                ;;
4458         armv[6-8]*)
4459             enable fast_clz
4460             disabled fast_unaligned || enable fast_unaligned
4461             ;;
4462     esac
4463
4464 elif enabled avr32; then
4465
4466     case $cpu in
4467         ap7[02]0[0-2])
4468             subarch="avr32_ap"
4469             cpuflags="-mpart=$cpu"
4470         ;;
4471         ap)
4472             subarch="avr32_ap"
4473             cpuflags="-march=$cpu"
4474         ;;
4475         uc3[ab]*)
4476             subarch="avr32_uc"
4477             cpuflags="-mcpu=$cpu"
4478         ;;
4479         uc)
4480             subarch="avr32_uc"
4481             cpuflags="-march=$cpu"
4482         ;;
4483     esac
4484
4485 elif enabled bfin; then
4486
4487     cpuflags="-mcpu=$cpu"
4488
4489 elif enabled mips; then
4490
4491     cpuflags="-march=$cpu"
4492
4493     if [ "$cpu" != "generic" ]; then
4494         disable mips32r2
4495         disable mips32r5
4496         disable mips64r2
4497         disable mips32r6
4498         disable mips64r6
4499         disable loongson2
4500         disable loongson3
4501
4502         case $cpu in
4503             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4504                 enable mips32r2
4505                 disable msa
4506             ;;
4507             p5600|i6400|p6600)
4508                 disable mipsdsp
4509                 disable mipsdspr2
4510             ;;
4511             loongson*)
4512                 enable loongson2
4513                 enable loongson3
4514                 enable local_aligned_8 local_aligned_16 local_aligned_32
4515                 enable simd_align_16
4516                 enable fast_64bit
4517                 enable fast_clz
4518                 enable fast_cmov
4519                 enable fast_unaligned
4520                 disable aligned_stack
4521                 disable mipsfpu
4522                 disable mipsdsp
4523                 disable mipsdspr2
4524                 case $cpu in
4525                     loongson3*)
4526                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4527                     ;;
4528                     loongson2e)
4529                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4530                     ;;
4531                     loongson2f)
4532                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4533                     ;;
4534                 esac
4535             ;;
4536             *)
4537                 # Unknown CPU. Disable everything.
4538                 warn "unknown CPU. Disabling all MIPS optimizations."
4539                 disable mipsfpu
4540                 disable mipsdsp
4541                 disable mipsdspr2
4542                 disable msa
4543                 disable mmi
4544             ;;
4545         esac
4546
4547         case $cpu in
4548             24kc)
4549                 disable mipsfpu
4550                 disable mipsdsp
4551                 disable mipsdspr2
4552             ;;
4553             24kf*)
4554                 disable mipsdsp
4555                 disable mipsdspr2
4556             ;;
4557             24kec|34kc|1004kc)
4558                 disable mipsfpu
4559                 disable mipsdspr2
4560             ;;
4561             24kef*|34kf*|1004kf*)
4562                 disable mipsdspr2
4563             ;;
4564             74kc)
4565                 disable mipsfpu
4566             ;;
4567             p5600)
4568                 enable mips32r5
4569                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4570             ;;
4571             i6400)
4572                 enable mips64r6
4573                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4574             ;;
4575             p6600)
4576                 enable mips64r6
4577                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4578             ;;
4579         esac
4580     else
4581         # We do not disable anything. Is up to the user to disable the unwanted features.
4582         warn 'generic cpu selected'
4583     fi
4584
4585 elif enabled ppc; then
4586
4587     disable ldbrx
4588
4589     case $(tolower $cpu) in
4590         601|ppc601|powerpc601)
4591             cpuflags="-mcpu=601"
4592             disable altivec
4593         ;;
4594         603*|ppc603*|powerpc603*)
4595             cpuflags="-mcpu=603"
4596             disable altivec
4597         ;;
4598         604*|ppc604*|powerpc604*)
4599             cpuflags="-mcpu=604"
4600             disable altivec
4601         ;;
4602         g3|75*|ppc75*|powerpc75*)
4603             cpuflags="-mcpu=750"
4604             disable altivec
4605         ;;
4606         g4|745*|ppc745*|powerpc745*)
4607             cpuflags="-mcpu=7450"
4608             disable vsx
4609         ;;
4610         74*|ppc74*|powerpc74*)
4611             cpuflags="-mcpu=7400"
4612             disable vsx
4613         ;;
4614         g5|970|ppc970|powerpc970)
4615             cpuflags="-mcpu=970"
4616             disable vsx
4617         ;;
4618         power[3-6]*)
4619             cpuflags="-mcpu=$cpu"
4620             disable vsx
4621         ;;
4622         power[7-8]*)
4623             cpuflags="-mcpu=$cpu"
4624         ;;
4625         cell)
4626             cpuflags="-mcpu=cell"
4627             enable ldbrx
4628             disable vsx
4629         ;;
4630         e500mc)
4631             cpuflags="-mcpu=e500mc"
4632             disable altivec
4633         ;;
4634         e500v2)
4635             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4636             disable altivec
4637             disable dcbzl
4638         ;;
4639         e500)
4640             cpuflags="-mcpu=8540 -mhard-float"
4641             disable altivec
4642             disable dcbzl
4643         ;;
4644     esac
4645
4646 elif enabled sparc; then
4647
4648     case $cpu in
4649         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4650             cpuflags="-mcpu=$cpu"
4651         ;;
4652         ultrasparc*|niagara[234])
4653             cpuflags="-mcpu=$cpu"
4654         ;;
4655     esac
4656
4657 elif enabled x86; then
4658
4659     case $cpu in
4660         i[345]86|pentium)
4661             cpuflags="-march=$cpu"
4662             disable i686
4663             disable mmx
4664         ;;
4665         # targets that do NOT support nopl and conditional mov (cmov)
4666         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4667             cpuflags="-march=$cpu"
4668             disable i686
4669         ;;
4670         # targets that do support nopl and conditional mov (cmov)
4671         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4672         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4673         |amdfam10|barcelona|b[dt]ver*|znver*)
4674             cpuflags="-march=$cpu"
4675             enable i686
4676             enable fast_cmov
4677         ;;
4678         # targets that do support conditional mov but on which it's slow
4679         pentium4|pentium4m|prescott|nocona)
4680             cpuflags="-march=$cpu"
4681             enable i686
4682             disable fast_cmov
4683         ;;
4684     esac
4685
4686 fi
4687
4688 if [ "$cpu" != generic ]; then
4689     add_cflags  $cpuflags
4690     add_asflags $cpuflags
4691     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4692 fi
4693
4694 # compiler sanity check
4695 check_exec <<EOF
4696 int main(void){ return 0; }
4697 EOF
4698 if test "$?" != 0; then
4699     echo "$cc is unable to create an executable file."
4700     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4701         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4702         echo "Only do this if you know what cross compiling means."
4703     fi
4704     die "C compiler test failed."
4705 fi
4706
4707 add_cppflags -D_ISOC99_SOURCE
4708 add_cxxflags -D__STDC_CONSTANT_MACROS
4709 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4710
4711 # some compilers silently accept -std=c11, so we also need to check that the
4712 # version macro is defined properly
4713 if test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L"; then
4714     add_cflags -std=c11
4715 else
4716     check_cflags -std=c99
4717 fi
4718
4719 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4720 #include <stdlib.h>
4721 EOF
4722 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4723 #include <stdlib.h>
4724 EOF
4725
4726 add_host_cppflags -D_ISOC99_SOURCE
4727 check_host_cflags -std=c99
4728 check_host_cflags -Wall
4729 check_host_cflags -O3
4730
4731 check_64bit(){
4732     arch32=$1
4733     arch64=$2
4734     expr=$3
4735     check_code cc "" "int test[2*($expr) - 1]" &&
4736         subarch=$arch64 || subarch=$arch32
4737 }
4738
4739 case "$arch" in
4740     aarch64|alpha|ia64)
4741         spic=$shared
4742     ;;
4743     mips)
4744         check_64bit mips mips64 '_MIPS_SIM > 1'
4745         spic=$shared
4746     ;;
4747     parisc)
4748         check_64bit parisc parisc64 'sizeof(void *) > 4'
4749         spic=$shared
4750     ;;
4751     ppc)
4752         check_64bit ppc ppc64 'sizeof(void *) > 4'
4753         spic=$shared
4754     ;;
4755     s390)
4756         check_64bit s390 s390x 'sizeof(void *) > 4'
4757         spic=$shared
4758     ;;
4759     sparc)
4760         check_64bit sparc sparc64 'sizeof(void *) > 4'
4761         spic=$shared
4762     ;;
4763     x86)
4764         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4765         # Treat x32 as x64 for now. Note it also needs spic=$shared
4766         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4767             subarch=x86_64
4768         if test "$subarch" = "x86_64"; then
4769             spic=$shared
4770         fi
4771     ;;
4772     ppc)
4773         check_cc <<EOF && subarch="ppc64"
4774         int test[(int)sizeof(char*) - 7];
4775 EOF
4776     ;;
4777 esac
4778
4779 enable $subarch
4780 enabled spic && enable_weak pic
4781
4782 # OS specific
4783 case $target_os in
4784     aix)
4785         SHFLAGS=-shared
4786         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4787         enabled shared && add_ldflags -Wl,-brtl
4788         ;;
4789     android)
4790         disable symver
4791         enable section_data_rel_ro
4792         SLIB_INSTALL_NAME='$(SLIBNAME)'
4793         SLIB_INSTALL_LINKS=
4794         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4795         ;;
4796     haiku)
4797         prefix_default="/boot/common"
4798         network_extralibs="-lnetwork"
4799         host_extralibs=
4800         ;;
4801     sunos)
4802         SHFLAGS='-shared -Wl,-h,$$(@F)'
4803         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4804         network_extralibs="-lsocket -lnsl"
4805         add_cppflags -D__EXTENSIONS__
4806         # When using suncc to build, the Solaris linker will mark
4807         # an executable with each instruction set encountered by
4808         # the Solaris assembler.  As our libraries contain their own
4809         # guards for processor-specific code, instead suppress
4810         # generation of the HWCAPS ELF section on Solaris x86 only.
4811         enabled_all suncc x86 &&
4812             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4813             add_ldflags -Wl,-M,mapfile
4814         nm_default='nm -P -g'
4815         version_script='-M'
4816         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
4817         ;;
4818     netbsd)
4819         disable symver
4820         oss_indev_extralibs="-lossaudio"
4821         oss_outdev_extralibs="-lossaudio"
4822         enabled gcc || check_ldflags -Wl,-zmuldefs
4823         ;;
4824     openbsd|bitrig)
4825         disable symver
4826         SHFLAGS='-shared'
4827         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4828         SLIB_INSTALL_LINKS=
4829         oss_indev_extralibs="-lossaudio"
4830         oss_outdev_extralibs="-lossaudio"
4831         ;;
4832     dragonfly)
4833         disable symver
4834         ;;
4835     freebsd)
4836         ;;
4837     bsd/os)
4838         add_extralibs -lpoll -lgnugetopt
4839         strip="strip -d"
4840         ;;
4841     darwin)
4842         enabled ppc && add_asflags -force_cpusubtype_ALL
4843         install_name_dir_default='$(SHLIBDIR)'
4844         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4845         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4846         strip="${strip} -x"
4847         add_ldflags -Wl,-dynamic,-search_paths_first
4848         SLIBSUF=".dylib"
4849         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4850         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4851         objformat="macho"
4852         enabled x86_64 && objformat="macho64"
4853         enabled_any pic shared x86_64 ||
4854             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4855         check_header dispatch/dispatch.h &&
4856             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
4857         version_script='-exported_symbols_list'
4858         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
4859         ;;
4860     msys*)
4861         die "Native MSYS builds are discouraged, please use the MINGW environment."
4862         ;;
4863     mingw32*|mingw64*)
4864         if test $target_os = "mingw32ce"; then
4865             disable network
4866         else
4867             target_os=mingw32
4868         fi
4869         LIBTARGET=i386
4870         if enabled x86_64; then
4871             LIBTARGET="i386:x86-64"
4872         elif enabled arm; then
4873             LIBTARGET=arm-wince
4874         fi
4875         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4876         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4877         shlibdir_default="$bindir_default"
4878         SLIBPREF=""
4879         SLIBSUF=".dll"
4880         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4881         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4882         dlltool="${cross_prefix}dlltool"
4883         if check_cmd lib.exe -list; then
4884             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4885             if enabled x86_64; then
4886                 LIBTARGET=x64
4887             fi
4888         elif check_cmd $dlltool --version; then
4889             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4890         fi
4891         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4892         SLIB_INSTALL_LINKS=
4893         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4894         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4895         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
4896         objformat="win32"
4897         ranlib=:
4898         enable dos_paths
4899         check_ldflags -Wl,--nxcompat,--dynamicbase
4900         # Lets work around some stupidity in binutils.
4901         # ld will strip relocations from executables even though we need them
4902         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4903         # however ld then forgets what the entry point should be (oops) so we
4904         # have to manually (re)set it.
4905         if enabled x86_32; then
4906             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4907         elif enabled x86_64; then
4908             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
4909             check_ldflags -Wl,--high-entropy-va # binutils 2.25
4910             # Set image base >4GB for extra entropy with HEASLR
4911             add_ldexeflags -Wl,--image-base,0x140000000
4912             append SHFLAGS -Wl,--image-base,0x180000000
4913         fi
4914         ;;
4915     win32|win64)
4916         disable symver
4917         if enabled shared; then
4918             # Link to the import library instead of the normal static library
4919             # for shared libs.
4920             LD_LIB='%.lib'
4921             # Cannot build both shared and static libs with MSVC or icl.
4922             disable static
4923         fi
4924         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4925         shlibdir_default="$bindir_default"
4926         SLIBPREF=""
4927         SLIBSUF=".dll"
4928         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4929         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4930         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4931         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4932         SLIB_INSTALL_LINKS=
4933         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4934         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4935         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4936         objformat="win32"
4937         ranlib=:
4938         enable dos_paths
4939         ;;
4940     cygwin*)
4941         target_os=cygwin
4942         shlibdir_default="$bindir_default"
4943         SLIBPREF="cyg"
4944         SLIBSUF=".dll"
4945         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4946         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4947         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4948         SLIB_INSTALL_LINKS=
4949         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4950         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4951         objformat="win32"
4952         enable dos_paths
4953         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4954         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4955         ;;
4956     *-dos|freedos|opendos)
4957         network_extralibs="-lsocket"
4958         objformat="coff"
4959         enable dos_paths
4960         add_cppflags -U__STRICT_ANSI__
4961         ;;
4962     linux)
4963         enable dv1394
4964         enable section_data_rel_ro
4965         ;;
4966     irix*)
4967         target_os=irix
4968         ranlib="echo ignoring ranlib"
4969         ;;
4970     os/2*)
4971         strip="lxlite -CS"
4972         objformat="aout"
4973         add_cppflags -D_GNU_SOURCE
4974         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4975         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4976         LIBSUF="_s.a"
4977         SLIBPREF=""
4978         SLIBSUF=".dll"
4979         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4980         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4981         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
4982             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
4983             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
4984             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
4985             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
4986         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
4987             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
4988         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4989         SLIB_INSTALL_LINKS=
4990         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
4991         enable dos_paths
4992         enable_weak os2threads
4993         ;;
4994     gnu/kfreebsd)
4995         add_cppflags -D_BSD_SOURCE
4996         ;;
4997     gnu)
4998         ;;
4999     qnx)
5000         add_cppflags -D_QNX_SOURCE
5001         network_extralibs="-lsocket"
5002         ;;
5003     symbian)
5004         SLIBSUF=".dll"
5005         enable dos_paths
5006         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5007         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5008         add_ldflags -Wl,--target1-abs,--no-undefined \
5009                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5010                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5011         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5012                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5013                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5014         ;;
5015     osf1)
5016         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
5017         ;;
5018     minix)
5019         ;;
5020     none)
5021         ;;
5022     *)
5023         die "Unknown OS '$target_os'."
5024         ;;
5025 esac
5026
5027 # test if creating links works
5028 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5029 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5030 mkdir "$link_dest"
5031 $ln_s "$link_dest" "$link_name"
5032 touch "$link_dest/test_file"
5033 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5034     # create link to source path
5035     [ -e src ] && rm src
5036     $ln_s "$source_path" src
5037     source_link=src
5038 else
5039     # creating directory links doesn't work
5040     # fall back to using the full source path
5041     source_link="$source_path"
5042 fi
5043 # cleanup
5044 rm -r "$link_dest"
5045 rm -r "$link_name"
5046
5047 # determine libc flavour
5048
5049 probe_libc(){
5050     pfx=$1
5051     pfx_no_=${pfx%_}
5052     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5053     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5054         eval ${pfx}libc_type=uclibc
5055         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5056     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5057         eval ${pfx}libc_type=glibc
5058         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5059     # MinGW headers can be installed on Cygwin, so check for newlib first.
5060     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5061         eval ${pfx}libc_type=newlib
5062         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5063     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5064     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5065         eval ${pfx}libc_type=mingw64
5066         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5067             add_compat msvcrt/snprintf.o
5068             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5069         fi
5070         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5071         eval test \$${pfx_no_}cc_type = "gcc" &&
5072             add_${pfx}cppflags -D__printf__=__gnu_printf__
5073     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5074          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5075         eval ${pfx}libc_type=mingw32
5076         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5077             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5078             die "ERROR: MinGW32 runtime version must be >= 3.15."
5079         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5080         check_${pfx}cpp_condition _mingw.h "defined(_WIN32_WINNT) && _WIN32_WINNT >= 0x0502" ||
5081             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
5082         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700__" &&
5083             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5084         eval test \$${pfx_no_}cc_type = "gcc" &&
5085             add_${pfx}cppflags -D__printf__=__gnu_printf__
5086     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5087         eval ${pfx}libc_type=msvcrt
5088         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5089             if [ "$pfx" = host_ ]; then
5090                 add_host_cppflags -Dsnprintf=_snprintf
5091             else
5092                 add_compat strtod.o strtod=avpriv_strtod
5093                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5094                                              _snprintf=avpriv_snprintf  \
5095                                              vsnprintf=avpriv_vsnprintf
5096             fi
5097         fi
5098         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5099         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5100         # 0x601 by default unless something else is set by the user.
5101         # This can easily lead to us detecting functions only present
5102         # in such new versions and producing binaries requiring windows 7.0.
5103         # Therefore explicitly set the default to XP unless the user has
5104         # set something else on the command line.
5105         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5106         # family. For these cases, configure is free to use any functions
5107         # found in the SDK headers by default. (Alternatively, we could force
5108         # _WIN32_WINNT to 0x0602 in that case.)
5109         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5110             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
5111 #ifdef WINAPI_FAMILY
5112 #include <winapifamily.h>
5113 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5114 #error not desktop
5115 #endif
5116 #endif
5117 EOF
5118         if [ "$pfx" = "" ]; then
5119             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5120             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5121         fi
5122     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5123         eval ${pfx}libc_type=klibc
5124     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5125         eval ${pfx}libc_type=bionic
5126     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5127         eval ${pfx}libc_type=solaris
5128         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5129     fi
5130     check_${pfx}cc <<EOF
5131 #include <time.h>
5132 void *v = localtime_r;
5133 EOF
5134 test "$?" != 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
5135 #include <time.h>
5136 void *v = localtime_r;
5137 EOF
5138
5139 }
5140
5141 probe_libc
5142 test -n "$libc_type" && enable libc_$libc_type
5143 probe_libc host_
5144 test -n "$host_libc_type" && enable host_libc_$host_libc_type
5145
5146 case $libc_type in
5147     bionic)
5148         add_compat strtod.o strtod=avpriv_strtod
5149         ;;
5150 esac
5151
5152 # hacks for compiler/libc/os combinations
5153
5154 if enabled_all tms470 libc_glibc; then
5155     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
5156     add_cppflags -D__USER_LABEL_PREFIX__=
5157     add_cppflags -D__builtin_memset=memset
5158     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
5159     add_cflags   -pds=48    # incompatible redefinition of macro
5160 fi
5161
5162 if enabled_all ccc libc_glibc; then
5163     add_ldflags -Wl,-z,now  # calls to libots crash without this
5164 fi
5165
5166 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5167     add_cppflags '-I\$(SRC_PATH)/compat/float'
5168
5169 esc(){
5170     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
5171 }
5172
5173 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
5174
5175 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5176
5177 set_default libdir
5178 : ${shlibdir_default:="$libdir"}
5179 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5180
5181 set_default $PATHS_LIST
5182 set_default nm
5183
5184 # we need to build at least one lib type
5185 if ! enabled_any static shared; then
5186     cat <<EOF
5187 At least one library type must be built.
5188 Specify --enable-static to build the static libraries or --enable-shared to
5189 build the shared libraries as well. To only build the shared libraries specify
5190 --disable-static in addition to --enable-shared.
5191 EOF
5192     exit 1
5193 fi
5194
5195 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5196
5197 enable_weak_pic() {
5198     disabled pic && return
5199     enable pic
5200     add_cppflags -DPIC
5201     case "$target_os" in
5202     mingw*|cygwin*)
5203         ;;
5204     *)
5205         add_cflags -fPIC
5206         ;;
5207     esac
5208     add_asflags  -fPIC
5209 }
5210
5211 enabled pic && enable_weak_pic
5212
5213 check_cc <<EOF || die "Symbol mangling check failed."
5214 int ff_extern;
5215 EOF
5216 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5217 extern_prefix=${sym%%ff_extern*}
5218
5219 check_cc <<EOF && enable_weak inline_asm
5220 void foo(void) { __asm__ volatile ("" ::); }
5221 EOF
5222
5223 _restrict=
5224 for restrict_keyword in restrict __restrict__ __restrict; do
5225     check_cc <<EOF && _restrict=$restrict_keyword && break
5226 void foo(char * $restrict_keyword p);
5227 EOF
5228 done
5229
5230 check_cc <<EOF && enable pragma_deprecated
5231 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
5232 EOF
5233
5234 check_cc <<EOF && enable attribute_packed
5235 struct { int x; } __attribute__((packed)) x;
5236 EOF
5237
5238 check_cc <<EOF && enable attribute_may_alias
5239 union { int x; } __attribute__((may_alias)) x;
5240 EOF
5241
5242 check_cc <<EOF || die "endian test failed"
5243 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5244 EOF
5245 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5246
5247 if ! enabled ppc64 || enabled bigendian; then
5248     disable vsx
5249 fi
5250
5251 check_gas() {
5252     log "check_gas using '$as' as AS"
5253     # :vararg is used on aarch64, arm and ppc altivec
5254     check_as <<EOF || return 1
5255 .macro m n, y:vararg=0
5256 \n: .int \y
5257 .endm
5258 m x
5259 EOF
5260     # .altmacro is only used in arm asm
5261     ! enabled arm || check_as <<EOF || return 1
5262 .altmacro
5263 EOF
5264     enable gnu_as
5265     return 0
5266 }
5267
5268 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5269     nogas=:
5270     enabled_any arm aarch64 && nogas=die
5271     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5272     as_noop=-v
5273
5274     case $as_type in
5275         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5276         gcc)  gaspp_as_type=gas ;;
5277         *)    gaspp_as_type=$as_type ;;
5278     esac
5279
5280     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5281
5282     test "${as#*gas-preprocessor.pl}" != "$as" ||
5283     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5284         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5285
5286     if ! check_gas ; then
5287         as=${gas:=$as}
5288         check_gas || \
5289             $nogas "GNU assembler not found, install/update gas-preprocessor"
5290     fi
5291
5292     check_as <<EOF && enable as_func
5293 .func test
5294 .endfunc
5295 EOF
5296 fi
5297
5298 check_inline_asm inline_asm_labels '"1:\n"'
5299
5300 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5301
5302 if enabled aarch64; then
5303     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5304     # internal assembler in clang 3.3 does not support this instruction
5305     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5306     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5307
5308     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5309
5310 elif enabled alpha; then
5311
5312     check_cflags -mieee
5313
5314 elif enabled arm; then
5315
5316     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
5317
5318     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
5319 float func(float a, float b){ return a+b; }
5320 EOF
5321
5322     enabled thumb && check_cflags -mthumb || check_cflags -marm
5323
5324     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
5325         enable vfp_args
5326     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5327         enable vfp_args
5328     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5329         case "${cross_prefix:-$cc}" in
5330             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
5331             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
5332 __asm__ (".eabi_attribute 28, 1");
5333 int main(void) { return 0; }
5334 EOF
5335         esac
5336         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5337     fi
5338
5339     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5340     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5341     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5342     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5343     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5344     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5345     enabled setend  && check_insn setend  'setend be'
5346
5347     [ $target_os = linux ] || [ $target_os = android ] ||
5348         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5349             $ARCH_EXT_LIST_ARM
5350
5351     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5352
5353     check_as <<EOF && enable as_dn_directive
5354 ra .dn d0.i16
5355 .unreq ra
5356 EOF
5357     check_as <<EOF && enable as_fpu_directive
5358 .fpu neon
5359 EOF
5360
5361     # llvm's integrated assembler supports .object_arch from llvm 3.5
5362     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
5363 .object_arch armv4
5364 EOF
5365
5366     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5367
5368 elif enabled mips; then
5369
5370     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5371     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5372     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5373
5374     # Enable minimum ISA based on selected options
5375     if enabled mips64; then
5376         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5377         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5378         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5379     else
5380         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5381         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5382         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5383         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5384     fi
5385
5386     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5387     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5388     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
5389     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5390     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5391
5392 elif enabled parisc; then
5393
5394     if enabled gcc; then
5395         case $($cc -dumpversion) in
5396             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5397         esac
5398     fi
5399
5400 elif enabled ppc; then
5401
5402     enable local_aligned_8 local_aligned_16 local_aligned_32
5403
5404     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5405     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5406     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5407     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5408
5409     # AltiVec flags: The FSF version of GCC differs from the Apple version
5410     if enabled altivec; then
5411         check_cflags -maltivec -mabi=altivec &&
5412         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
5413         check_cflags -faltivec
5414
5415         # check if our compiler supports Motorola AltiVec C API
5416         check_cc <<EOF || disable altivec
5417 $inc_altivec_h
5418 int main(void) {
5419     vector signed int v1 = (vector signed int) { 0 };
5420     vector signed int v2 = (vector signed int) { 1 };
5421     v1 = vec_add(v1, v2);
5422     return 0;
5423 }
5424 EOF
5425
5426         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5427     fi
5428
5429     if enabled vsx; then
5430         check_cflags -mvsx &&
5431         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
5432     fi
5433
5434     if enabled power8; then
5435         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
5436     fi
5437
5438 elif enabled x86; then
5439
5440     check_builtin rdtsc    intrin.h   "__rdtsc()"
5441     check_builtin mm_empty mmintrin.h "_mm_empty()"
5442
5443     enable local_aligned_8 local_aligned_16 local_aligned_32
5444
5445     # check whether EBP is available on x86
5446     # As 'i' is stored on the stack, this program will crash
5447     # if the base pointer is used to access it because the
5448     # base pointer is cleared in the inline assembly code.
5449     check_exec_crash <<EOF && enable ebp_available
5450 volatile int i=0;
5451 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5452 return i;
5453 EOF
5454
5455     # check whether EBX is available on x86
5456     check_inline_asm ebx_available '""::"b"(0)' &&
5457         check_inline_asm ebx_available '"":::"%ebx"'
5458
5459     # check whether xmm clobbers are supported
5460     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5461
5462     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5463         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5464
5465     # check whether binutils is new enough to compile SSSE3/MMXEXT
5466     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5467     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5468
5469     if ! disabled_any asm mmx yasm; then
5470         if check_cmd $yasmexe --version; then
5471             enabled x86_64 && yasm_extra="-m amd64"
5472             yasm_debug="-g dwarf2"
5473         elif check_cmd nasm -v; then
5474             yasmexe=nasm
5475             yasm_debug="-g -F dwarf"
5476             if enabled x86_64; then
5477                 case "$objformat" in
5478                     elf)   objformat=elf64 ;;
5479                     win32) objformat=win64 ;;
5480                 esac
5481             fi
5482         fi
5483
5484         YASMFLAGS="-f $objformat $yasm_extra"
5485         enabled pic               && append YASMFLAGS "-DPIC"
5486         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
5487         case "$objformat" in
5488             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
5489         esac
5490
5491         check_yasm "movbe ecx, [5]" && enable yasm ||
5492             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
5493         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5494         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5495         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5496         check_yasm "CPU amdnop" || disable cpunop
5497     fi
5498
5499     case "$cpu" in
5500         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5501             disable fast_clz
5502         ;;
5503     esac
5504
5505 fi
5506
5507 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
5508
5509 check_ldflags -Wl,--as-needed
5510 check_ldflags -Wl,-z,noexecstack
5511
5512 if check_func dlopen && check_func dlsym; then
5513     ldl=
5514 elif check_func dlopen -ldl && check_func dlsym -ldl; then
5515     ldl=-ldl
5516 fi
5517
5518 avisynth_demuxer_extralibs='$ldl'
5519 cuda_extralibs='$ldl'
5520 decklink_outdev_extralibs="$decklink_outdev_extralibs $ldl"
5521 decklink_indev_extralibs="$decklink_indev_extralibs $ldl"
5522 frei0r_filter_extralibs='$ldl'
5523 frei0r_src_filter_extralibs='$ldl'
5524 ladspa_filter_extralibs='$ldl'
5525 nvenc_extralibs='$ldl'
5526 coreimage_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5527 coreimagesrc_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5528
5529 if ! disabled network; then
5530     check_func getaddrinfo $network_extralibs
5531     check_func inet_aton $network_extralibs
5532
5533     check_type netdb.h "struct addrinfo"
5534     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5535     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5536     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5537     check_type poll.h "struct pollfd"
5538     check_type netinet/sctp.h "struct sctp_event_subscribe"
5539     check_struct "sys/socket.h" "struct msghdr" msg_flags
5540     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5541     check_type netinet/in.h "struct sockaddr_in6"
5542     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5543     check_type "sys/types.h sys/socket.h" socklen_t
5544
5545     # Prefer arpa/inet.h over winsock2
5546     if check_header arpa/inet.h ; then
5547         check_func closesocket
5548     elif check_header winsock2.h ; then
5549         check_func_headers winsock2.h closesocket -lws2 &&
5550             network_extralibs="-lws2" ||
5551         { check_func_headers winsock2.h closesocket -lws2_32 &&
5552             network_extralibs="-lws2_32"; } || disable winsock2_h network
5553         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5554
5555         check_type ws2tcpip.h socklen_t
5556         check_type ws2tcpip.h "struct addrinfo"
5557         check_type ws2tcpip.h "struct group_source_req"
5558         check_type ws2tcpip.h "struct ip_mreq_source"
5559         check_type ws2tcpip.h "struct ipv6_mreq"
5560         check_type winsock2.h "struct pollfd"
5561         check_struct winsock2.h "struct sockaddr" sa_len
5562         check_type ws2tcpip.h "struct sockaddr_in6"
5563         check_type ws2tcpip.h "struct sockaddr_storage"
5564     else
5565         disable network
5566     fi
5567 fi
5568
5569 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5570 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5571 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5572 check_builtin sarestart signal.h "SA_RESTART"
5573 check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" -lpthread
5574 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5575 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5576 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5577 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5578
5579 case "$custom_allocator" in
5580     jemalloc)
5581         # jemalloc by default does not use a prefix
5582         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5583     ;;
5584     tcmalloc)
5585         require_pkg_config libtcmalloc gperftools/tcmalloc.h tc_malloc
5586         malloc_prefix=tc_
5587     ;;
5588 esac
5589
5590 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5591 check_func  ${malloc_prefix}memalign            && enable memalign
5592 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5593
5594 check_func  access
5595 check_func_headers stdlib.h arc4random
5596 check_func_headers time.h clock_gettime ||
5597     { check_lib clock_gettime time.h clock_gettime -lrt && LIBRT="-lrt"; }
5598 check_func  fcntl
5599 check_func  fork
5600 check_func  gethrtime
5601 check_func  getopt
5602 check_func  getrusage
5603 check_func  gettimeofday
5604 check_func  isatty
5605 check_func  mach_absolute_time
5606 check_func  mkstemp
5607 check_func  mmap
5608 check_func  mprotect
5609 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5610 check_func_headers time.h nanosleep ||
5611     { check_lib nanosleep time.h nanosleep -lrt && LIBRT="-lrt"; }
5612 check_func  sched_getaffinity
5613 check_func  setrlimit
5614 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5615 check_func  strerror_r
5616 check_func  sysconf
5617 check_func  sysctl
5618 check_func  usleep
5619
5620 check_func_headers conio.h kbhit
5621 check_func_headers io.h setmode
5622 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5623 check_func_headers stdlib.h getenv
5624 check_func_headers sys/stat.h lstat
5625
5626 check_func_headers windows.h GetProcessAffinityMask
5627 check_func_headers windows.h GetProcessTimes
5628 check_func_headers windows.h GetSystemTimeAsFileTime
5629 check_func_headers windows.h LoadLibrary
5630 check_func_headers windows.h MapViewOfFile
5631 check_func_headers windows.h PeekNamedPipe
5632 check_func_headers windows.h SetConsoleTextAttribute
5633 check_func_headers windows.h SetConsoleCtrlHandler
5634 check_func_headers windows.h Sleep
5635 check_func_headers windows.h VirtualAlloc
5636 check_struct windows.h "CONDITION_VARIABLE" Ptr
5637 check_func_headers glob.h glob
5638 enabled xlib &&
5639     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5640
5641 check_header AudioToolbox/AudioToolbox.h
5642 check_header d3d11.h
5643 check_header direct.h
5644 check_header dirent.h
5645 check_header dlfcn.h
5646 check_header dxva.h
5647 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5648 check_header io.h
5649 check_header libcrystalhd/libcrystalhd_if.h
5650 check_header mach/mach_time.h
5651 check_header malloc.h
5652 check_header net/udplite.h
5653 check_header poll.h
5654 check_header sys/mman.h
5655 check_header sys/param.h
5656 check_header sys/resource.h
5657 check_header sys/select.h
5658 check_header sys/time.h
5659 check_header sys/un.h
5660 check_header termios.h
5661 check_header unistd.h
5662 check_header valgrind/valgrind.h
5663 check_header VideoDecodeAcceleration/VDADecoder.h
5664 check_header VideoToolbox/VideoToolbox.h
5665 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5666 enabled videotoolbox && check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferColorPrimaries_ITU_R_2020 -framework CoreVideo
5667 check_header windows.h
5668 check_header X11/extensions/XvMClib.h
5669 check_header asm/types.h
5670
5671 # it seems there are versions of clang in some distros that try to use the
5672 # gcc headers, which explodes for stdatomic
5673 # so we also check that atomics actually work here
5674 check_builtin stdatomic_h stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0)"
5675
5676 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
5677 check_lib wincrypt "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
5678 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
5679
5680 check_lib coreservices "CoreServices/CoreServices.h" UTGetOSTypeFromString "-framework CoreServices"
5681
5682 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5683
5684 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5685 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5686 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5687 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5688 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5689
5690 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
5691 check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
5692 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
5693 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
5694 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5695 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5696 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
5697 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
5698
5699 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5700
5701 check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
5702
5703 if ! disabled w32threads && ! enabled pthreads; then
5704     check_func_headers "windows.h process.h" _beginthreadex &&
5705         enable w32threads || disable w32threads
5706     if ! enabled w32threads && enabled winrt; then
5707         check_func_headers "windows.h" CreateThread &&
5708             enable w32threads || disable w32threads
5709     fi
5710 fi
5711
5712 # check for some common methods of building with pthread support
5713 # do this before the optional library checks as some of them require pthreads
5714 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5715     if check_lib pthreads pthread.h pthread_join   -pthread &&
5716        check_lib pthreads pthread.h pthread_create -pthread; then
5717         add_cflags -pthread
5718     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
5719          check_lib pthreads pthread.h pthread_create -pthreads; then
5720         add_cflags -pthreads
5721     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
5722          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
5723         add_cflags -ldl -pthread
5724     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
5725          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
5726         :
5727     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
5728          check_lib pthreads pthread.h pthread_create -lpthread; then
5729         :
5730     elif check_func pthread_join && check_func pthread_create; then
5731         enable pthreads
5732     fi
5733     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5734 fi
5735
5736
5737 if enabled pthreads; then
5738   check_func pthread_cancel
5739 fi
5740
5741 enabled pthreads &&
5742     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)"
5743
5744 disabled  zlib || check_lib zlib   zlib.h      zlibVersion    -lz
5745 disabled bzlib || check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
5746 disabled  lzma || check_lib lzma   lzma.h lzma_version_number -llzma
5747
5748 check_lib libm math.h sin -lm && LIBM="-lm"
5749 disabled crystalhd || check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
5750
5751 atan2f_args=2
5752 copysign_args=2
5753 hypot_args=2
5754 ldexpf_args=2
5755 powf_args=2
5756
5757 for func in $MATH_FUNCS; do
5758     eval check_mathfunc $func \${${func}_args:-1} $LIBM
5759 done
5760
5761 for func in $COMPLEX_FUNCS; do
5762     eval check_complexfunc $func \${${func}_args:-1}
5763 done
5764
5765 # these are off by default, so fail if requested and not available
5766 enabled avfoundation_indev && { check_header_objcc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
5767 enabled avfoundation_indev && { check_lib avfoundation_indev CoreGraphics/CoreGraphics.h CGGetActiveDisplayList -framework CoreGraphics ||
5768                                 check_lib avfoundation_indev ApplicationServices/ApplicationServices.h CGGetActiveDisplayList -framework ApplicationServices; }
5769 enabled cuda_sdk          && require cuda_sdk cuda.h cuCtxCreate -lcuda
5770 enabled cuvid             && { enabled cuda ||
5771                                die "ERROR: CUVID requires CUDA"; }
5772 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5773 enabled coreimage_filter  && { check_header_objcc QuartzCore/CoreImage.h || disable coreimage_filter; }
5774 enabled coreimagesrc_filter && { check_header_objcc QuartzCore/CoreImage.h || disable coreimagesrc_filter; }
5775 enabled decklink          && { { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; } &&
5776                                { check_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a060100" || die "ERROR: Decklink API version must be >= 10.6.1."; } }
5777 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
5778 enabled gmp               && require gmp gmp.h mpz_export -lgmp
5779 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
5780 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads || die "ERROR: jni not found"; }
5781 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
5782 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5783 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
5784 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
5785 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
5786 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5787                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
5788                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5789 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
5790 enabled libdc1394         && require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new
5791 enabled libfdk_aac        && { use_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5792                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5793                                  warn "using libfdk without pkg-config"; } }
5794 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"
5795 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
5796 enabled fontconfig        && enable libfontconfig
5797 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
5798 enabled libfreetype       && require_pkg_config freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
5799 enabled libfribidi        && require_pkg_config fribidi fribidi.h fribidi_version_info
5800 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
5801 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5802                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
5803                                done || die "ERROR: libgsm not found"; }
5804 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
5805 enabled libkvazaar        && require_pkg_config "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5806 # While it may appear that require is being used as a pkg-config
5807 # fallback for libmfx, it is actually being used to detect a different
5808 # installation route altogether.  If libmfx is installed via the Intel
5809 # Media SDK or Intel Media Server Studio, these don't come with
5810 # pkg-config support.  Instead, users should make sure that the build
5811 # can find the libraries and headers through other means.
5812 enabled libmfx            && { use_pkg_config libmfx "mfx/mfxvideo.h" MFXInit ||
5813                                { require libmfx "mfx/mfxvideo.h" MFXInit -llibmfx && warn "using libmfx without pkg-config"; } }
5814 enabled libmodplug        && require_pkg_config libmodplug libmodplug/modplug.h ModPlug_Load
5815 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5816 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
5817 enabled libnpp            && require libnpp npp.h nppGetLibVersion -lnppi -lnppc
5818 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5819 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5820 enabled libopencv         && { check_header opencv2/core/core_c.h &&
5821                                { use_pkg_config opencv opencv2/core/core_c.h cvCreateImageHeader ||
5822                                  require opencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
5823                                require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader; }
5824 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
5825 enabled libopenjpeg       && { { check_lib libopenjpeg openjpeg-2.1/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5826                                check_lib libopenjpeg openjpeg-2.1/openjpeg.h opj_version -lopenjp2 ||
5827                                { check_lib libopenjpeg openjpeg-2.0/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5828                                { check_lib libopenjpeg openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5829                                { check_lib libopenjpeg openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5830                                die "ERROR: libopenjpeg not found"; }
5831 enabled libopenmpt        && require_pkg_config "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create
5832 enabled libopus           && {
5833     enabled libopus_decoder && {
5834         require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
5835     }
5836     enabled libopus_encoder && {
5837         require_pkg_config opus opus_multistream.h opus_multistream_surround_encoder_create
5838     }
5839 }
5840 enabled libpulse          && require_pkg_config libpulse pulse/pulseaudio.h pa_context_new
5841 enabled librsvg           && require_pkg_config librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
5842 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
5843 enabled librubberband     && require_pkg_config "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new
5844 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
5845 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
5846 enabled libsmbclient      && { use_pkg_config smbclient libsmbclient.h smbc_init ||
5847                                require smbclient libsmbclient.h smbc_init -lsmbclient; }
5848 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy
5849 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr && LIBSOXR="-lsoxr"
5850 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
5851 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
5852 enabled libtesseract      && require_pkg_config tesseract tesseract/capi.h TessBaseAPICreate
5853 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
5854 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5855                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5856                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5857 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
5858 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5859 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5860 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
5861
5862 enabled libvpx            && {
5863     enabled libvpx_vp8_decoder && {
5864         use_pkg_config "vpx >= 0.9.1" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
5865             check_lib libvpx_vp8_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
5866                 die "ERROR: libvpx decoder version must be >=0.9.1";
5867     }
5868     enabled libvpx_vp8_encoder && {
5869         use_pkg_config "vpx >= 0.9.7" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
5870             check_lib libvpx_vp8_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
5871                 die "ERROR: libvpx encoder version must be >=0.9.7";
5872     }
5873     enabled libvpx_vp9_decoder && {
5874         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
5875             check_lib libvpx_vp9_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx
5876     }
5877     enabled libvpx_vp9_encoder && {
5878         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
5879             check_lib libvpx_vp9_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx
5880     }
5881     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
5882         die "libvpx enabled but no supported decoders found"
5883     fi
5884 }
5885
5886 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
5887 enabled libwebp           && {
5888     enabled libwebp_encoder      && require_pkg_config "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
5889     enabled libwebp_anim_encoder && { use_pkg_config "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit || disable libwebp_anim_encoder; } }
5890 enabled libx264           && { use_pkg_config x264 "stdint.h x264.h" x264_encoder_encode ||
5891                                { require libx264 "stdint.h x264.h" x264_encoder_encode -lx264 &&
5892                                  warn "using libx264 without pkg-config"; } } &&
5893                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
5894                                die "ERROR: libx264 must be installed and version must be >= 0.118."; } &&
5895                              { check_cpp_condition x264.h "X264_MPEG2" &&
5896                                enable libx262; }
5897 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
5898                              { check_cpp_condition x265.h "X265_BUILD >= 68" ||
5899                                die "ERROR: libx265 version must be >= 68."; }
5900 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode -lxavs
5901 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
5902 enabled libzimg           && require_pkg_config "zimg >= 2.3.0" zimg.h zimg_get_api_version
5903 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
5904 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi &&
5905                              { check_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
5906                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
5907 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
5908 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
5909                                { ! enabled cross_compile &&
5910                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
5911                                  add_ldflags -L/opt/vc/lib/ &&
5912                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
5913                                die "ERROR: mmal not found" &&
5914                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
5915 enabled netcdf            && require_pkg_config netcdf netcdf.h nc_inq_libvers
5916 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
5917                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
5918                                die "ERROR: openal not found"; } &&
5919                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
5920                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
5921 enabled opencl            && { check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
5922                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
5923                                die "ERROR: opencl not found"; } &&
5924                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
5925                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
5926                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
5927 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
5928                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
5929                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
5930                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
5931                                die "ERROR: opengl not found."
5932                              }
5933 enabled omx_rpi           && { check_header OMX_Core.h ||
5934                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_header OMX_Core.h ; } ||
5935                                die "ERROR: OpenMAX IL headers not found"; }
5936 enabled omx               && { check_header OMX_Core.h || die "ERROR: OpenMAX IL headers not found"; }
5937 enabled openssl           && { use_pkg_config openssl openssl/ssl.h OPENSSL_init_ssl ||
5938                                use_pkg_config openssl openssl/ssl.h SSL_library_init ||
5939                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
5940                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
5941                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
5942                                die "ERROR: openssl not found"; }
5943 enabled qtkit_indev      && { check_header_objcc QTKit/QTKit.h || disable qtkit_indev; }
5944
5945 if enabled gcrypt; then
5946     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
5947     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
5948         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
5949         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
5950         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
5951             die "ERROR: gcrypt not found"
5952         add_cflags $gcrypt_cflags && add_extralibs $gcrypt_extralibs
5953     else
5954         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
5955     fi
5956 fi
5957
5958 disabled sdl && disable sdl2
5959 if ! disabled sdl2; then
5960     SDL2_CONFIG="${cross_prefix}sdl2-config"
5961     if check_pkg_config sdl2 SDL_events.h SDL_PollEvent; then
5962         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
5963         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
5964         check_func SDL_Init $sdl2_extralibs $sdl2_cflags && enable sdl2
5965     else
5966       if "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
5967         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
5968         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
5969         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
5970         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
5971         check_func SDL_Init $sdl2_extralibs $sdl2_cflags && enable sdl2
5972       fi
5973     fi
5974     if test $target_os = "mingw32"; then
5975         sdl2_extralibs="$sdl2_extralibs -mconsole"
5976     fi
5977 fi
5978 enabled sdl2 && enable sdl && add_cflags $sdl2_cflags && add_extralibs $sdl2_extralibs
5979
5980 if enabled decklink; then
5981     case $target_os in
5982         mingw32*|mingw64*|win32|win64)
5983             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
5984             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
5985             ;;
5986     esac
5987 fi
5988
5989 disabled securetransport || { check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5990     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext SecItemImport" "-Wl,-framework,CoreFoundation -Wl,-framework,Security"; }
5991
5992 disabled schannel || { check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
5993                        check_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" && enable schannel && add_extralibs -lsecur32; }
5994
5995 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
5996 enabled makeinfo \
5997     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
5998     && enable makeinfo_html || disable makeinfo_html
5999 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6000 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6001 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6002 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6003
6004 check_header linux/fb.h
6005 check_header linux/videodev.h
6006 check_header linux/videodev2.h
6007 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
6008
6009 check_header sys/videoio.h
6010 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
6011
6012 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6013 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6014 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6015 # w32api 3.12 had it defined wrong
6016 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
6017
6018 check_type "dshow.h" IBaseFilter
6019
6020 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6021 { check_header dev/bktr/ioctl_meteor.h &&
6022   check_header dev/bktr/ioctl_bt848.h; } ||
6023 { check_header machine/ioctl_meteor.h &&
6024   check_header machine/ioctl_bt848.h; } ||
6025 { check_header dev/video/meteor/ioctl_meteor.h &&
6026   check_header dev/video/bktr/ioctl_bt848.h; } ||
6027 check_header dev/ic/bt8xx.h
6028
6029 if check_struct sys/soundcard.h audio_buf_info bytes; then
6030     enable_safe sys/soundcard.h
6031 else
6032     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
6033     #include <sys/soundcard.h>
6034     audio_buf_info abc;
6035 EOF
6036 fi
6037 check_header soundcard.h
6038
6039 enabled_any alsa_indev alsa_outdev &&
6040     check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
6041
6042 enabled jack_indev && check_lib jack jack/jack.h jack_client_open -ljack &&
6043     check_func jack_port_get_latency_range -ljack
6044
6045 enabled_any sndio_indev sndio_outdev && check_lib sndio sndio.h sio_open -lsndio
6046
6047 if enabled libcdio; then
6048     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6049     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6050     die "ERROR: No usable libcdio/cdparanoia found"
6051 fi
6052
6053 if ! disabled libxcb; then
6054     check_pkg_config "xcb >= 1.4" xcb/xcb.h xcb_connect || {
6055         enabled libxcb && die "ERROR: libxcb >= 1.4 not found";
6056     } && enable libxcb
6057
6058 if enabled libxcb; then
6059     disabled libxcb_shm || {
6060         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
6061             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
6062         } && check_header sys/shm.h && enable libxcb_shm; }
6063
6064     disabled libxcb_xfixes || {
6065         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
6066             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
6067         } && enable libxcb_xfixes; }
6068
6069     disabled libxcb_shape || {
6070         check_pkg_config xcb-shape xcb/shape.h xcb_shape_get_rectangles || {
6071             enabled libxcb_shape && die "ERROR: libxcb_shape not found";
6072         } && enable libxcb_shape; }
6073
6074     add_cflags $xcb_cflags $xcb_shm_cflags $xcb_xfixes_cflags $xcb_shape_cflags
6075     add_extralibs $xcb_extralibs $xcb_shm_extralibs $xcb_xfixes_extralibs $xcb_shape_extralibs
6076 fi
6077 fi
6078
6079 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6080
6081 enabled dxva2api_h &&
6082     check_cc <<EOF && enable dxva2api_cobj
6083 #define _WIN32_WINNT 0x0600
6084 #define COBJMACROS
6085 #include <windows.h>
6086 #include <d3d9.h>
6087 #include <dxva2api.h>
6088 int main(void) { IDirectXVideoDecoder *o = NULL; IDirectXVideoDecoder_Release(o); return 0; }
6089 EOF
6090
6091 enabled dxva2 &&
6092     check_lib dxva2_lib windows.h CoTaskMemFree -lole32
6093
6094 enabled vaapi &&
6095     check_lib vaapi va/va.h vaInitialize -lva
6096
6097 enabled vaapi &&
6098     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
6099     disable vaapi
6100
6101 enabled vaapi &&
6102     check_lib vaapi_drm "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm
6103
6104 enabled vaapi &&
6105     check_lib vaapi_x11 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 -lX11
6106
6107 enabled vdpau &&
6108     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
6109     disable vdpau
6110
6111 enabled vdpau &&
6112     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6113
6114 if enabled x86; then
6115     case $target_os in
6116         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6117             ;;
6118         *)
6119             disable cuda cuvid nvenc
6120             ;;
6121     esac
6122 else
6123     disable cuda cuvid nvenc
6124 fi
6125
6126 enabled nvenc &&
6127     check_cc -I$source_path <<EOF || disable nvenc
6128 #include "compat/nvenc/nvEncodeAPI.h"
6129 NV_ENCODE_API_FUNCTION_LIST flist;
6130 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6131 int main(void) { return 0; }
6132 EOF
6133
6134 # Funny iconv installations are not unusual, so check it after all flags have been set
6135 disabled iconv || check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6136
6137 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6138
6139 # add some useful compiler flags if supported
6140 check_cflags -Wdeclaration-after-statement
6141 check_cflags -Wall
6142 check_cflags -Wdisabled-optimization
6143 check_cflags -Wpointer-arith
6144 check_cflags -Wredundant-decls
6145 check_cflags -Wwrite-strings
6146 check_cflags -Wtype-limits
6147 check_cflags -Wundef
6148 check_cflags -Wmissing-prototypes
6149 check_cflags -Wno-pointer-to-int-cast
6150 check_cflags -Wstrict-prototypes
6151 check_cflags -Wempty-body
6152
6153 if enabled extra_warnings; then
6154     check_cflags -Wcast-qual
6155     check_cflags -Wextra
6156     check_cflags -Wpedantic
6157 fi
6158
6159 check_disable_warning(){
6160     warning_flag=-W${1#-Wno-}
6161     test_cflags $warning_flag && add_cflags $1
6162 }
6163
6164 check_disable_warning -Wno-parentheses
6165 check_disable_warning -Wno-switch
6166 check_disable_warning -Wno-format-zero-length
6167 check_disable_warning -Wno-pointer-sign
6168 check_disable_warning -Wno-unused-const-variable
6169
6170 check_disable_warning_headers(){
6171     warning_flag=-W${1#-Wno-}
6172     test_cflags $warning_flag && add_cflags_headers $1
6173 }
6174
6175 check_disable_warning_headers -Wno-deprecated-declarations
6176 check_disable_warning_headers -Wno-unused-variable
6177
6178 # add some linker flags
6179 check_ldflags -Wl,--warn-common
6180 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6181 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
6182 enabled rpath && add_ldlibflags -Wl,-rpath,$libdir
6183 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6184
6185 # add some strip flags
6186 # -wN '..@*' is more selective than -x, but not available everywhere.
6187 check_stripflags -wN \'..@*\' || check_stripflags -x
6188
6189 enabled neon_clobber_test &&
6190     check_ldflags -Wl,--wrap,avcodec_open2              \
6191                   -Wl,--wrap,avcodec_decode_audio4      \
6192                   -Wl,--wrap,avcodec_decode_video2      \
6193                   -Wl,--wrap,avcodec_decode_subtitle2   \
6194                   -Wl,--wrap,avcodec_encode_audio2      \
6195                   -Wl,--wrap,avcodec_encode_video2      \
6196                   -Wl,--wrap,avcodec_encode_subtitle    \
6197                   -Wl,--wrap,avcodec_send_packet        \
6198                   -Wl,--wrap,avcodec_receive_packet     \
6199                   -Wl,--wrap,avcodec_send_frame         \
6200                   -Wl,--wrap,avcodec_receive_frame      \
6201                   -Wl,--wrap,swr_convert                \
6202                   -Wl,--wrap,avresample_convert ||
6203     disable neon_clobber_test
6204
6205 enabled xmm_clobber_test &&
6206     check_ldflags -Wl,--wrap,avcodec_open2              \
6207                   -Wl,--wrap,avcodec_decode_audio4      \
6208                   -Wl,--wrap,avcodec_decode_video2      \
6209                   -Wl,--wrap,avcodec_decode_subtitle2   \
6210                   -Wl,--wrap,avcodec_encode_audio2      \
6211                   -Wl,--wrap,avcodec_encode_video2      \
6212                   -Wl,--wrap,avcodec_encode_subtitle    \
6213                   -Wl,--wrap,avcodec_send_packet        \
6214                   -Wl,--wrap,avcodec_receive_packet     \
6215                   -Wl,--wrap,avcodec_send_frame         \
6216                   -Wl,--wrap,avcodec_receive_frame      \
6217                   -Wl,--wrap,swr_convert                \
6218                   -Wl,--wrap,avresample_convert         \
6219                   -Wl,--wrap,sws_scale ||
6220     disable xmm_clobber_test
6221
6222 check_ld "cc" <<EOF && enable proper_dce
6223 extern const int array[512];
6224 static inline int func(void) { return array[0]; }
6225 int main(void) { return 0; }
6226 EOF
6227
6228 if enabled proper_dce; then
6229     echo "X { local: *; };" > $TMPV
6230     if test_ldflags -Wl,${version_script},$TMPV; then
6231         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6232         check_cc <<EOF && enable symver_asm_label
6233 void ff_foo(void) __asm__ ("av_foo@VERSION");
6234 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6235 EOF
6236         check_cc <<EOF && enable symver_gnu_asm
6237 __asm__(".symver ff_foo,av_foo@VERSION");
6238 void ff_foo(void) {}
6239 EOF
6240     fi
6241 fi
6242
6243 if [ -z "$optflags" ]; then
6244     if enabled small; then
6245         optflags=$cflags_size
6246     elif enabled optimizations; then
6247         optflags=$cflags_speed
6248     else
6249         optflags=$cflags_noopt
6250     fi
6251 fi
6252
6253 if [ -z "$nvccflags" ]; then
6254     nvccflags=$nvccflags_default
6255 fi
6256
6257 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6258     nvccflags="$nvccflags -m64"
6259 else
6260     nvccflags="$nvccflags -m32"
6261 fi
6262
6263 check_optflags(){
6264     check_cflags "$@"
6265     enabled lto && check_ldflags "$@"
6266 }
6267
6268
6269 if enabled lto; then
6270     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6271     check_cflags  -flto
6272     check_ldflags -flto $cpuflags
6273     disable inline_asm_direct_symbol_refs
6274 fi
6275
6276 check_optflags $optflags
6277 check_optflags -fno-math-errno
6278 check_optflags -fno-signed-zeros
6279
6280 enabled ftrapv && check_cflags -ftrapv
6281
6282 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6283 int x;
6284 EOF
6285
6286
6287 if enabled icc; then
6288     # Just warnings, no remarks
6289     check_cflags -w1
6290     # -wd: Disable following warnings
6291     # 144, 167, 556: -Wno-pointer-sign
6292     # 188: enumerated type mixed with another type
6293     # 1292: attribute "foo" ignored
6294     # 1419: external declaration in primary source file
6295     # 10006: ignoring unknown option -fno-signed-zeros
6296     # 10148: ignoring unknown option -Wno-parentheses
6297     # 10156: ignoring option '-W'; no argument required
6298     # 13200: No EMMS instruction before call to function
6299     # 13203: No EMMS instruction before return from function
6300     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6301     # 11030: Warning unknown option --as-needed
6302     # 10156: ignoring option '-export'; no argument required
6303     check_ldflags -wd10156,11030
6304     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6305     enable ebp_available
6306     # The test above does not test linking
6307     enabled lto && disable symver_asm_label
6308     if enabled x86_32; then
6309         icc_version=$($cc -dumpversion)
6310         test ${icc_version%%.*} -ge 11 &&
6311             check_cflags -falign-stack=maintain-16-byte ||
6312             disable aligned_stack
6313     fi
6314 elif enabled ccc; then
6315     # disable some annoying warnings
6316     add_cflags -msg_disable bitnotint
6317     add_cflags -msg_disable mixfuncvoid
6318     add_cflags -msg_disable nonstandcast
6319     add_cflags -msg_disable unsupieee
6320 elif enabled gcc; then
6321     check_optflags -fno-tree-vectorize
6322     check_cflags -Werror=format-security
6323     check_cflags -Werror=implicit-function-declaration
6324     check_cflags -Werror=missing-prototypes
6325     check_cflags -Werror=return-type
6326     check_cflags -Werror=vla
6327     check_cflags -Wformat
6328     check_cflags -fdiagnostics-color=auto
6329     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6330 elif enabled llvm_gcc; then
6331     check_cflags -mllvm -stack-alignment=16
6332 elif enabled clang; then
6333     check_cflags -mllvm -stack-alignment=16
6334     check_cflags -mstack-alignment=16
6335     check_cflags -Qunused-arguments
6336     check_cflags -Werror=implicit-function-declaration
6337     check_cflags -Werror=missing-prototypes
6338     check_cflags -Werror=return-type
6339 elif enabled cparser; then
6340     add_cflags -Wno-missing-variable-declarations
6341     add_cflags -Wno-empty-statement
6342 elif enabled armcc; then
6343     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6344     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6345     # 2523: use of inline assembly is deprecated
6346     add_cflags -W${armcc_opt},--diag_suppress=2523
6347     add_cflags -W${armcc_opt},--diag_suppress=1207
6348     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6349     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6350     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6351     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6352 elif enabled tms470; then
6353     add_cflags -pds=824 -pds=837
6354     disable inline_asm
6355 elif enabled pathscale; then
6356     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6357 elif enabled_any msvc icl; then
6358     enabled x86_32 && disable aligned_stack
6359     enabled_all x86_32 debug && add_cflags -Oy-
6360     enabled debug && add_ldflags -debug
6361     enable pragma_deprecated
6362     if enabled icl; then
6363         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6364         # (correctly) on icl 13.x.
6365         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6366             add_cflags -Qansi-alias
6367         # Some inline asm is not compilable in debug
6368         if enabled debug; then
6369             disable ebp_available
6370             disable ebx_available
6371         fi
6372     fi
6373     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6374     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
6375     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6376     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6377     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6378     # MSVC 2013 and newer can handle it fine.
6379     # If this declspec fails, force including stdlib.h before the restrict redefinition
6380     # happens in config.h.
6381     if [ $_restrict != restrict ]; then
6382         check_cc <<EOF || add_cflags -FIstdlib.h
6383 __declspec($_restrict) void* foo(int);
6384 EOF
6385     fi
6386     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6387     # Issue has been fixed in MSVC v19.00.24218.
6388     check_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6389         check_cflags -d2SSAOptimizer-
6390     # enable utf-8 source processing on VS2015 U2 and newer
6391     check_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6392         add_cflags -utf-8
6393 fi
6394
6395 for pfx in "" host_; do
6396     varname=${pfx%_}cc_type
6397     eval "type=\$$varname"
6398     if [ $type = "msvc" ]; then
6399         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6400 static inline int foo(int a) { return a; }
6401 EOF
6402     fi
6403 done
6404
6405 case $as_type in
6406     clang)
6407         add_asflags -Qunused-arguments
6408     ;;
6409 esac
6410
6411 case $ld_type in
6412     clang)
6413         check_ldflags -Qunused-arguments
6414     ;;
6415 esac
6416
6417 case $target_os in
6418     osf1)
6419         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
6420     ;;
6421 esac
6422
6423 enable frame_thread_encoder
6424
6425 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6426
6427 check_deps $CONFIG_LIST       \
6428            $CONFIG_EXTRA      \
6429            $HAVE_LIST         \
6430            $ALL_COMPONENTS    \
6431
6432 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"
6433
6434
6435 if test $target_os = "haiku"; then
6436     disable memalign
6437     disable posix_memalign
6438 fi
6439
6440 # add_dep lib dep
6441 # -> enable ${lib}_deps_${dep}
6442 # -> add $dep to ${lib}_deps only once
6443 add_dep() {
6444     lib=$1
6445     dep=$2
6446     enabled "${lib}_deps_${dep}" && return 0
6447     enable  "${lib}_deps_${dep}"
6448     prepend "${lib}_deps" $dep
6449 }
6450
6451 # merge deps lib components
6452 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
6453 merge_deps() {
6454     lib=$1
6455     shift
6456     for comp in $*; do
6457         enabled $comp || continue
6458         eval "dep=\"\$${comp}_deps\""
6459         for d in $dep; do
6460             add_dep $lib $d
6461         done
6462     done
6463 }
6464
6465 merge_deps libavfilter $FILTER_LIST
6466
6467 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6468
6469 for thread in $THREADS_LIST; do
6470     if enabled $thread; then
6471         test -n "$thread_type" &&
6472             die "ERROR: Only one thread type must be selected." ||
6473             thread_type="$thread"
6474     fi
6475 done
6476
6477 if disabled stdatomic_h; then
6478     if enabled atomics_gcc; then
6479         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6480     elif enabled atomics_win32; then
6481         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6482     elif enabled atomics_suncc; then
6483         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6484     elif enabled pthreads; then
6485         add_compat atomics/pthread/stdatomic.o
6486         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6487     else
6488         enabled threads && die "Threading is enabled, but no atomics are available"
6489         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6490     fi
6491 fi
6492
6493 # Check if requested libraries were found.
6494 for lib in $AUTODETECT_LIBS; do
6495     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6496 done
6497
6498 enabled zlib && add_cppflags -DZLIB_CONST
6499
6500 # conditional library dependencies, in linking order
6501 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6502 enabled afir_filter         && prepend avfilter_deps "avcodec"
6503 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6504 enabled aresample_filter    && prepend avfilter_deps "swresample"
6505 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6506 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6507 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6508 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6509 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6510 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6511 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
6512 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6513 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6514 enabled pan_filter          && prepend avfilter_deps "swresample"
6515 enabled pp_filter           && prepend avfilter_deps "postproc"
6516 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6517 enabled resample_filter && prepend avfilter_deps "avresample"
6518 enabled sab_filter          && prepend avfilter_deps "swscale"
6519 enabled scale_filter    && prepend avfilter_deps "swscale"
6520 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6521 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6522 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6523 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6524 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6525 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
6526 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6527 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6528 enabled spp_filter          && prepend avfilter_deps "avcodec"
6529 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6530 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6531 enabled zoompan_filter      && prepend avfilter_deps "swscale"
6532
6533 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6534
6535 enabled opus_decoder    && prepend avcodec_deps "swresample"
6536
6537 expand_deps(){
6538     lib_deps=${1}_deps
6539     eval "deps=\$$lib_deps"
6540     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6541     unique $lib_deps
6542 }
6543
6544 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6545 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6546
6547 map 'expand_deps $v' $LIBRARY_LIST
6548
6549 license="LGPL version 2.1 or later"
6550 if enabled nonfree; then
6551     license="nonfree and unredistributable"
6552 elif enabled gplv3; then
6553     license="GPL version 3 or later"
6554 elif enabled lgplv3; then
6555     license="LGPL version 3 or later"
6556 elif enabled gpl; then
6557     license="GPL version 2 or later"
6558 fi
6559
6560 if test "$quiet" != "yes"; then
6561
6562 echo "install prefix            $prefix"
6563 echo "source path               $source_path"
6564 echo "C compiler                $cc"
6565 echo "C library                 $libc_type"
6566 if test "$host_cc" != "$cc"; then
6567     echo "host C compiler           $host_cc"
6568     echo "host C library            $host_libc_type"
6569 fi
6570 echo "ARCH                      $arch ($cpu)"
6571 if test "$build_suffix" != ""; then
6572     echo "build suffix              $build_suffix"
6573 fi
6574 if test "$progs_suffix" != ""; then
6575     echo "progs suffix              $progs_suffix"
6576 fi
6577 if test "$extra_version" != ""; then
6578     echo "version string suffix     $extra_version"
6579 fi
6580 echo "big-endian                ${bigendian-no}"
6581 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6582 if enabled x86; then
6583     echo "${yasmexe}                      ${yasm-no}"
6584     echo "MMX enabled               ${mmx-no}"
6585     echo "MMXEXT enabled            ${mmxext-no}"
6586     echo "3DNow! enabled            ${amd3dnow-no}"
6587     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6588     echo "SSE enabled               ${sse-no}"
6589     echo "SSSE3 enabled             ${ssse3-no}"
6590     echo "AESNI enabled             ${aesni-no}"
6591     echo "AVX enabled               ${avx-no}"
6592     echo "XOP enabled               ${xop-no}"
6593     echo "FMA3 enabled              ${fma3-no}"
6594     echo "FMA4 enabled              ${fma4-no}"
6595     echo "i686 features enabled     ${i686-no}"
6596     echo "CMOV is fast              ${fast_cmov-no}"
6597     echo "EBX available             ${ebx_available-no}"
6598     echo "EBP available             ${ebp_available-no}"
6599 fi
6600 if enabled aarch64; then
6601     echo "NEON enabled              ${neon-no}"
6602     echo "VFP enabled               ${vfp-no}"
6603 fi
6604 if enabled arm; then
6605     echo "ARMv5TE enabled           ${armv5te-no}"
6606     echo "ARMv6 enabled             ${armv6-no}"
6607     echo "ARMv6T2 enabled           ${armv6t2-no}"
6608     echo "VFP enabled               ${vfp-no}"
6609     echo "NEON enabled              ${neon-no}"
6610     echo "THUMB enabled             ${thumb-no}"
6611 fi
6612 if enabled mips; then
6613     echo "MIPS FPU enabled          ${mipsfpu-no}"
6614     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6615     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6616     echo "MIPS MSA enabled          ${msa-no}"
6617     echo "LOONGSON MMI enabled      ${mmi-no}"
6618 fi
6619 if enabled ppc; then
6620     echo "AltiVec enabled           ${altivec-no}"
6621     echo "VSX enabled               ${vsx-no}"
6622     echo "POWER8 enabled            ${power8-no}"
6623     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6624     echo "dcbzl available           ${dcbzl-no}"
6625 fi
6626 echo "debug symbols             ${debug-no}"
6627 echo "strip symbols             ${stripping-no}"
6628 echo "optimize for size         ${small-no}"
6629 echo "optimizations             ${optimizations-no}"
6630 echo "static                    ${static-no}"
6631 echo "shared                    ${shared-no}"
6632 echo "postprocessing support    ${postproc-no}"
6633 echo "network support           ${network-no}"
6634 echo "threading support         ${thread_type-no}"
6635 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6636 echo "texi2html enabled         ${texi2html-no}"
6637 echo "perl enabled              ${perl-no}"
6638 echo "pod2man enabled           ${pod2man-no}"
6639 echo "makeinfo enabled          ${makeinfo-no}"
6640 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6641 test -n "$random_seed" &&
6642     echo "random seed               ${random_seed}"
6643 echo
6644
6645 echo "External libraries:"
6646 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_in_columns
6647 echo
6648
6649 echo "External libraries providing hardware acceleration:"
6650 print_enabled '' $HWACCEL_LIBRARY_LIST | print_in_columns
6651 echo
6652
6653 echo "Libraries:"
6654 print_enabled '' $LIBRARY_LIST | print_in_columns
6655 echo
6656
6657 echo "Programs:"
6658 print_enabled '' $PROGRAM_LIST | print_in_columns
6659 echo
6660
6661 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6662     echo "Enabled ${type}s:"
6663     eval list=\$$(toupper $type)_LIST
6664     print_enabled '_*' $list | print_in_columns
6665     echo
6666 done
6667
6668 if test -n "$ignore_tests"; then
6669     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
6670     echo "Ignored FATE tests:"
6671     echo $ignore_tests | print_in_columns
6672     echo
6673 fi
6674
6675 echo "License: $license"
6676
6677 echo "Creating configuration files ..."
6678
6679 fi # test "$quiet" != "yes"
6680
6681 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6682
6683 enabled stripping || strip="echo skipping strip"
6684
6685 config_files="$TMPH ffbuild/config.mak doc/config.texi"
6686
6687 cat > ffbuild/config.mak <<EOF
6688 # Automatically generated by configure - do not modify!
6689 ifndef FFMPEG_CONFIG_MAK
6690 FFMPEG_CONFIG_MAK=1
6691 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6692 prefix=$prefix
6693 LIBDIR=\$(DESTDIR)$libdir
6694 SHLIBDIR=\$(DESTDIR)$shlibdir
6695 INCDIR=\$(DESTDIR)$incdir
6696 BINDIR=\$(DESTDIR)$bindir
6697 DATADIR=\$(DESTDIR)$datadir
6698 DOCDIR=\$(DESTDIR)$docdir
6699 MANDIR=\$(DESTDIR)$mandir
6700 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6701 INSTALL_NAME_DIR=$install_name_dir
6702 SRC_PATH=$source_path
6703 SRC_LINK=$source_link
6704 ifndef MAIN_MAKEFILE
6705 SRC_PATH:=\$(SRC_PATH:.%=..%)
6706 endif
6707 CC_IDENT=$cc_ident
6708 ARCH=$arch
6709 INTRINSICS=$intrinsics
6710 CC=$cc
6711 CXX=$cxx
6712 AS=$as
6713 OBJCC=$objcc
6714 LD=$ld
6715 DEPCC=$dep_cc
6716 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6717 DEPAS=$as
6718 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6719 YASM=$yasmexe
6720 DEPYASM=$yasmexe
6721 AR=$ar
6722 ARFLAGS=$arflags
6723 AR_O=$ar_o
6724 RANLIB=$ranlib
6725 STRIP=$strip
6726 NVCC=$nvcc
6727 CP=cp -p
6728 LN_S=$ln_s
6729 CPPFLAGS=$CPPFLAGS
6730 CFLAGS=$CFLAGS
6731 CXXFLAGS=$CXXFLAGS
6732 OBJCFLAGS=$OBJCFLAGS
6733 ASFLAGS=$ASFLAGS
6734 NVCCFLAGS=$nvccflags
6735 AS_C=$AS_C
6736 AS_O=$AS_O
6737 OBJCC_C=$OBJCC_C
6738 OBJCC_E=$OBJCC_E
6739 OBJCC_O=$OBJCC_O
6740 CC_C=$CC_C
6741 CC_E=$CC_E
6742 CC_O=$CC_O
6743 CXX_C=$CXX_C
6744 CXX_O=$CXX_O
6745 NVCC_C=$NVCC_C
6746 NVCC_O=$NVCC_O
6747 LD_O=$LD_O
6748 LD_LIB=$LD_LIB
6749 LD_PATH=$LD_PATH
6750 DLLTOOL=$dlltool
6751 WINDRES=$windres
6752 DEPWINDRES=$dep_cc
6753 DOXYGEN=$doxygen
6754 LDFLAGS=$LDFLAGS
6755 LDEXEFLAGS=$LDEXEFLAGS
6756 LDLIBFLAGS=$LDLIBFLAGS
6757 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
6758 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
6759 YASMFLAGS=$YASMFLAGS
6760 BUILDSUF=$build_suffix
6761 PROGSSUF=$progs_suffix
6762 FULLNAME=$FULLNAME
6763 LIBPREF=$LIBPREF
6764 LIBSUF=$LIBSUF
6765 LIBNAME=$LIBNAME
6766 SLIBPREF=$SLIBPREF
6767 SLIBSUF=$SLIBSUF
6768 EXESUF=$EXESUF
6769 EXTRA_VERSION=$extra_version
6770 CCDEP=$CCDEP
6771 CXXDEP=$CXXDEP
6772 CCDEP_FLAGS=$CCDEP_FLAGS
6773 ASDEP=$ASDEP
6774 ASDEP_FLAGS=$ASDEP_FLAGS
6775 CC_DEPFLAGS=$CC_DEPFLAGS
6776 AS_DEPFLAGS=$AS_DEPFLAGS
6777 HOSTCC=$host_cc
6778 HOSTLD=$host_ld
6779 HOSTCFLAGS=$host_cflags
6780 HOSTCPPFLAGS=$host_cppflags
6781 HOSTEXESUF=$HOSTEXESUF
6782 HOSTLDFLAGS=$host_ldflags
6783 HOSTEXTRALIBS=$host_extralibs
6784 DEPHOSTCC=$host_cc
6785 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
6786 HOSTCCDEP=$HOSTCCDEP
6787 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
6788 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
6789 HOSTCC_C=$HOSTCC_C
6790 HOSTCC_O=$HOSTCC_O
6791 HOSTLD_O=$HOSTLD_O
6792 TARGET_EXEC=$target_exec $target_exec_args
6793 TARGET_PATH=$target_path
6794 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
6795 CFLAGS-ffplay=${sdl2_cflags}
6796 CFLAGS_HEADERS=$CFLAGS_HEADERS
6797 ZLIB=$($ldflags_filter -lz)
6798 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
6799 EXTRALIBS=$extralibs
6800 COMPAT_OBJS=$compat_objs
6801 INSTALL=$install
6802 LIBTARGET=${LIBTARGET}
6803 SLIBNAME=${SLIBNAME}
6804 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
6805 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
6806 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
6807 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
6808 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
6809 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
6810 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
6811 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
6812 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
6813 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
6814 NOREDZONE_FLAGS=$noredzone_flags
6815 LIBFUZZER_PATH=$libfuzzer_path
6816 IGNORE_TESTS=$ignore_tests
6817 EOF
6818
6819 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
6820
6821 print_program_extralibs(){
6822     eval "program_extralibs=\$${1}_extralibs"
6823     eval echo "EXTRALIBS-${1}=${program_extralibs}" >> ffbuild/config.mak
6824 }
6825
6826 map 'print_program_extralibs $v' $PROGRAM_LIST
6827
6828 cat > $TMPH <<EOF
6829 /* Automatically generated by configure - do not modify! */
6830 #ifndef FFMPEG_CONFIG_H
6831 #define FFMPEG_CONFIG_H
6832 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
6833 #define FFMPEG_LICENSE "$(c_escape $license)"
6834 #define CONFIG_THIS_YEAR 2017
6835 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
6836 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
6837 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
6838 #define av_restrict $_restrict
6839 #define EXTERN_PREFIX "${extern_prefix}"
6840 #define EXTERN_ASM ${extern_prefix}
6841 #define BUILDSUF "$build_suffix"
6842 #define SLIBSUF "$SLIBSUF"
6843 #define HAVE_MMX2 HAVE_MMXEXT
6844 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
6845 EOF
6846
6847 test -n "$assert_level" &&
6848     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
6849
6850 test -n "$malloc_prefix" &&
6851     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
6852
6853 if enabled yasm; then
6854     append config_files $TMPASM
6855     printf '' >$TMPASM
6856 fi
6857
6858 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
6859
6860
6861 mkdir -p doc
6862 mkdir -p tests
6863 mkdir -p tests/api
6864 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
6865
6866 print_config ARCH_   "$config_files" $ARCH_LIST
6867 print_config HAVE_   "$config_files" $HAVE_LIST
6868 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
6869                                      $CONFIG_EXTRA      \
6870                                      $ALL_COMPONENTS    \
6871
6872 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
6873 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
6874
6875 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
6876 cp_if_changed $TMPH config.h
6877 touch ffbuild/.config
6878
6879 enabled yasm && cp_if_changed $TMPASM config.asm
6880
6881 cat > $TMPH <<EOF
6882 /* Generated by ffconf */
6883 #ifndef AVUTIL_AVCONFIG_H
6884 #define AVUTIL_AVCONFIG_H
6885 EOF
6886
6887 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
6888
6889 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
6890
6891 cp_if_changed $TMPH libavutil/avconfig.h
6892
6893 # generate the lists of enabled components
6894 print_enabled_components(){
6895     file=$1
6896     struct_name=$2
6897     name=$3
6898     shift 3
6899     echo "static const $struct_name *$name[] = {" > $TMPH
6900     for c in $*; do
6901         enabled $c && printf "    &ff_%s,\n" $c >> $TMPH
6902     done
6903     echo "    NULL };" >> $TMPH
6904     cp_if_changed $TMPH $file
6905 }
6906
6907 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
6908 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
6909
6910 if test -n "$WARNINGS"; then
6911     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
6912     enabled fatal_warnings && exit 1
6913 fi
6914
6915 # Settings for pkg-config files
6916
6917 cat > ffbuild/config.sh <<EOF
6918 # Automatically generated by configure - do not modify!
6919 shared=$shared
6920 build_suffix=$build_suffix
6921 prefix=$prefix
6922 libdir=$libdir
6923 incdir=$incdir
6924 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
6925 source_path=${source_path}
6926 LIBPREF=${LIBPREF}
6927 LIBSUF=${LIBSUF}
6928
6929 extralibs_avutil="$LIBRT $LIBM"
6930 extralibs_avcodec="$extralibs"
6931 extralibs_avformat="$extralibs"
6932 extralibs_avdevice="$extralibs"
6933 extralibs_avfilter="$extralibs"
6934 extralibs_avresample="$LIBM"
6935 extralibs_postproc=""
6936 extralibs_swscale="$LIBM"
6937 extralibs_swresample="$LIBM $LIBSOXR"
6938 EOF
6939
6940 for lib in $LIBRARY_LIST; do
6941     lib_deps="$(eval echo \$${lib}_deps)"
6942     echo ${lib}_deps=\"$lib_deps\" >> ffbuild/config.sh
6943 done