git.sesse.net Git - ffmpeg/blob - 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   --disable-autodetect     disable automatically detected external libraries [no]
 113
 114 Program options:
 115   --disable-programs       do not build command line programs
 116   --disable-ffmpeg         disable ffmpeg build
 117   --disable-ffplay         disable ffplay build
 118   --disable-ffprobe        disable ffprobe 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 (deprecated) [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   --disable-alsa           disable ALSA support [autodetect]
 204   --disable-appkit         disable Apple AppKit framework [autodetect]
 205   --disable-avfoundation   disable Apple AVFoundation framework [autodetect]
 206   --enable-avisynth        enable reading of AviSynth script files [no]
 207   --disable-bzlib          disable bzlib [autodetect]
 208   --disable-coreimage      disable Apple CoreImage framework [autodetect]
 209   --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
 210   --enable-frei0r          enable frei0r video filtering [no]
 211   --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
 212                            if openssl, librtmp or gmp is not used [no]
 213   --enable-gmp             enable gmp, needed for rtmp(t)e support
 214                            if openssl or librtmp is not used [no]
 215   --enable-gnutls          enable gnutls, needed for https support
 216                            if openssl, libtls or mbedtls is not used [no]
 217   --disable-iconv          disable iconv [autodetect]
 218   --enable-jni             enable JNI support [no]
 219   --enable-ladspa          enable LADSPA audio filtering [no]
 220   --enable-libaom          enable AV1 video encoding/decoding via libaom [no]
 221   --enable-libaribb24      enable ARIB text and caption decoding via libaribb24 [no]
 222   --enable-libass          enable libass subtitles rendering,
 223                            needed for subtitles and ass filter [no]
 224   --enable-libbluray       enable BluRay reading using libbluray [no]
 225   --enable-libbs2b         enable bs2b DSP library [no]
 226   --enable-libcaca         enable textual display using libcaca [no]
 227   --enable-libcelt         enable CELT decoding via libcelt [no]
 228   --enable-libcdio         enable audio CD grabbing with libcdio [no]
 229   --enable-libcodec2       enable codec2 en/decoding using libcodec2 [no]
 230   --enable-libdav1d        enable AV1 decoding via libdav1d [no]
 231   --enable-libdavs2        enable AVS2 decoding via libdavs2 [no]
 232   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 233                            and libraw1394 [no]
 234   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 235   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 236   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
 237   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
 238   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
 239   --enable-libglslang      enable GLSL->SPIRV compilation via libglslang [no]
 240   --enable-libgme          enable Game Music Emu via libgme [no]
 241   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 242   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 243   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 244   --enable-libjack         enable JACK audio sound server [no]
 245   --enable-libklvanc       enable Kernel Labs VANC processing [no]
 246   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
 247   --enable-liblensfun      enable lensfun lens correction [no]
 248   --enable-libmodplug      enable ModPlug via libmodplug [no]
 249   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 250   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 251   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 252   --enable-libopencv       enable video filtering via libopencv [no]
 253   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 254   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 255   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
 256   --enable-libopus         enable Opus de/encoding via libopus [no]
 257   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 258   --enable-librabbitmq     enable RabbitMQ library [no]
 259   --enable-librav1e        enable AV1 encoding via rav1e [no]
 260   --enable-librsvg         enable SVG rasterization via librsvg [no]
 261   --enable-librubberband   enable rubberband needed for rubberband filter [no]
 262   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 263   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 264   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 265   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
 266   --enable-libsoxr         enable Include libsoxr resampling [no]
 267   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 268   --enable-libsrt          enable Haivision SRT protocol via libsrt [no]
 269   --enable-libssh          enable SFTP protocol via libssh [no]
 270   --enable-libtensorflow   enable TensorFlow as a DNN module backend
 271                            for DNN based filters like sr [no]
 272   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
 273   --enable-libtheora       enable Theora encoding via libtheora [no]
 274   --enable-libtls          enable LibreSSL (via libtls), needed for https support
 275                            if openssl, gnutls or mbedtls is not used [no]
 276   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 277   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 278   --enable-libvidstab      enable video stabilization using vid.stab [no]
 279   --enable-libvmaf         enable vmaf filter via libvmaf [no]
 280   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 281   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 282                            native implementation exists [no]
 283   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 284   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 285   --enable-libwebp         enable WebP encoding via libwebp [no]
 286   --enable-libx264         enable H.264 encoding via x264 [no]
 287   --enable-libx265         enable HEVC encoding via x265 [no]
 288   --enable-libxavs         enable AVS encoding via xavs [no]
 289   --enable-libxavs2        enable AVS2 encoding via xavs2 [no]
 290   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
 291   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
 292   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
 293   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
 294   --enable-libxvid         enable Xvid encoding via xvidcore,
 295                            native MPEG-4/Xvid encoder exists [no]
 296   --enable-libxml2         enable XML parsing using the C library libxml2, needed
 297                            for dash demuxing support [no]
 298   --enable-libzimg         enable z.lib, needed for zscale filter [no]
 299   --enable-libzmq          enable message passing via libzmq [no]
 300   --enable-libzvbi         enable teletext support via libzvbi [no]
 301   --enable-lv2             enable LV2 audio filtering [no]
 302   --disable-lzma           disable lzma [autodetect]
 303   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
 304   --enable-mbedtls         enable mbedTLS, needed for https support
 305                            if openssl, gnutls or libtls is not used [no]
 306   --enable-mediacodec      enable Android MediaCodec support [no]
 307   --enable-libmysofa       enable libmysofa, needed for sofalizer filter [no]
 308   --enable-openal          enable OpenAL 1.1 capture support [no]
 309   --enable-opencl          enable OpenCL processing [no]
 310   --enable-opengl          enable OpenGL rendering [no]
 311   --enable-openssl         enable openssl, needed for https support
 312                            if gnutls, libtls or mbedtls is not used [no]
 313   --enable-pocketsphinx    enable PocketSphinx, needed for asr filter [no]
 314   --disable-sndio          disable sndio support [autodetect]
 315   --disable-schannel       disable SChannel SSP, needed for TLS support on
 316                            Windows if openssl and gnutls are not used [autodetect]
 317   --disable-sdl2           disable sdl2 [autodetect]
 318   --disable-securetransport disable Secure Transport, needed for TLS support
 319                            on OSX if openssl and gnutls are not used [autodetect]
 320   --enable-vapoursynth     enable VapourSynth demuxer [no]
 321   --enable-vulkan          enable Vulkan code [no]
 322   --disable-xlib           disable xlib [autodetect]
 323   --disable-zlib           disable zlib [autodetect]
 324
 325   The following libraries provide various hardware acceleration features:
 326   --disable-amf            disable AMF video encoding code [autodetect]
 327   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
 328   --enable-cuda-nvcc       enable Nvidia CUDA compiler [no]
 329   --disable-cuda-llvm      disable CUDA compilation using clang [autodetect]
 330   --disable-cuvid          disable Nvidia CUVID support [autodetect]
 331   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
 332   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
 333   --disable-ffnvcodec      disable dynamically linked Nvidia code [autodetect]
 334   --enable-libdrm          enable DRM code (Linux) [no]
 335   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
 336   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
 337   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
 338   --disable-nvdec          disable Nvidia video decoding acceleration (via hwaccel) [autodetect]
 339   --disable-nvenc          disable Nvidia video encoding code [autodetect]
 340   --enable-omx             enable OpenMAX IL code [no]
 341   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
 342   --enable-rkmpp           enable Rockchip Media Process Platform code [no]
 343   --disable-v4l2-m2m       disable V4L2 mem2mem code [autodetect]
 344   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
 345   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
 346   --disable-videotoolbox   disable VideoToolbox code [autodetect]
 347
 348 Toolchain options:
 349   --arch=ARCH              select architecture [$arch]
 350   --cpu=CPU                select the minimum required CPU (affects
 351                            instruction selection, may crash on older CPUs)
 352   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 353   --progs-suffix=SUFFIX    program name suffix []
 354   --enable-cross-compile   assume a cross-compiler is used
 355   --sysroot=PATH           root of cross-build tree
 356   --sysinclude=PATH        location of cross-build system headers
 357   --target-os=OS           compiler targets OS [$target_os]
 358   --target-exec=CMD        command to run executables on target
 359   --target-path=DIR        path to view of build directory on target
 360   --target-samples=DIR     path to samples directory on target
 361   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 362   --toolchain=NAME         set tool defaults according to NAME
 363                            (gcc-asan, clang-asan, gcc-msan, clang-msan,
 364                            gcc-tsan, clang-tsan, gcc-usan, clang-usan,
 365                            valgrind-massif, valgrind-memcheck,
 366                            msvc, icl, gcov, llvm-cov, hardened)
 367   --nm=NM                  use nm tool NM [$nm_default]
 368   --ar=AR                  use archive tool AR [$ar_default]
 369   --as=AS                  use assembler AS [$as_default]
 370   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
 371   --strip=STRIP            use strip tool STRIP [$strip_default]
 372   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 373   --x86asmexe=EXE          use nasm-compatible assembler EXE [$x86asmexe_default]
 374   --cc=CC                  use C compiler CC [$cc_default]
 375   --cxx=CXX                use C compiler CXX [$cxx_default]
 376   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 377   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 378   --nvcc=NVCC              use Nvidia CUDA compiler NVCC or clang [$nvcc_default]
 379   --ld=LD                  use linker LD [$ld_default]
 380   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 381   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 382   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 383   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 384   --host-cc=HOSTCC         use host C compiler HOSTCC
 385   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 386   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 387   --host-ld=HOSTLD         use host linker HOSTLD
 388   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 389   --host-extralibs=HLIBS   use libs HLIBS when linking for host
 390   --host-os=OS             compiler host OS [$target_os]
 391   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 392   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 393   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 394   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 395   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 396   --extra-ldsoflags=ELDFLAGS add ELDFLAGS to LDSOFLAGS [$LDSOFLAGS]
 397   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 398   --extra-version=STRING   version string suffix []
 399   --optflags=OPTFLAGS      override optimization-related compiler flags
 400   --nvccflags=NVCCFLAGS    override nvcc flags [$nvccflags_default]
 401   --build-suffix=SUFFIX    library name suffix []
 402   --enable-pic             build position-independent code
 403   --enable-thumb           compile for Thumb instruction set
 404   --enable-lto             use link-time optimization
 405   --env="ENV=override"     override the environment variables
 406
 407 Advanced options (experts only):
 408   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 409   --custom-allocator=NAME  use a supported custom allocator
 410   --disable-symver         disable symbol versioning
 411   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 412   --disable-safe-bitstream-reader
 413                            disable buffer boundary checking in bitreaders
 414                            (faster, but may crash)
 415   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 416
 417 Optimization options (experts only):
 418   --disable-asm            disable all assembly optimizations
 419   --disable-altivec        disable AltiVec optimizations
 420   --disable-vsx            disable VSX optimizations
 421   --disable-power8         disable POWER8 optimizations
 422   --disable-amd3dnow       disable 3DNow! optimizations
 423   --disable-amd3dnowext    disable 3DNow! extended optimizations
 424   --disable-mmx            disable MMX optimizations
 425   --disable-mmxext         disable MMXEXT optimizations
 426   --disable-sse            disable SSE optimizations
 427   --disable-sse2           disable SSE2 optimizations
 428   --disable-sse3           disable SSE3 optimizations
 429   --disable-ssse3          disable SSSE3 optimizations
 430   --disable-sse4           disable SSE4 optimizations
 431   --disable-sse42          disable SSE4.2 optimizations
 432   --disable-avx            disable AVX optimizations
 433   --disable-xop            disable XOP optimizations
 434   --disable-fma3           disable FMA3 optimizations
 435   --disable-fma4           disable FMA4 optimizations
 436   --disable-avx2           disable AVX2 optimizations
 437   --disable-avx512         disable AVX-512 optimizations
 438   --disable-aesni          disable AESNI optimizations
 439   --disable-armv5te        disable armv5te optimizations
 440   --disable-armv6          disable armv6 optimizations
 441   --disable-armv6t2        disable armv6t2 optimizations
 442   --disable-vfp            disable VFP optimizations
 443   --disable-neon           disable NEON optimizations
 444   --disable-inline-asm     disable use of inline assembly
 445   --disable-x86asm         disable use of standalone x86 assembly
 446   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
 447   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 448   --disable-msa            disable MSA optimizations
 449   --disable-msa2           disable MSA2 optimizations
 450   --disable-mipsfpu        disable floating point MIPS optimizations
 451   --disable-mmi            disable Loongson SIMD optimizations
 452   --disable-fast-unaligned consider unaligned accesses slow
 453
 454 Developer options (useful when working on FFmpeg itself):
 455   --disable-debug          disable debugging symbols
 456   --enable-debug=LEVEL     set the debug level [$debuglevel]
 457   --disable-optimizations  disable compiler optimizations
 458   --enable-extra-warnings  enable more compiler warnings
 459   --disable-stripping      disable stripping of executables and shared libraries
 460   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 461                            2 causes a slowdown at runtime.
 462   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 463   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 464                            leaks and errors, using the specified valgrind binary.
 465                            Cannot be combined with --target-exec
 466   --enable-ftrapv          Trap arithmetic overflows
 467   --samples=PATH           location of test samples for FATE, if not set use
 468                            \$FATE_SAMPLES at make invocation time.
 469   --enable-neon-clobber-test check NEON registers for clobbering (should be
 470                            used only for debugging purposes)
 471   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 472                            should be used only for debugging purposes)
 473   --enable-random          randomly enable/disable components
 474   --disable-random
 475   --enable-random=LIST     randomly enable/disable specific components or
 476   --disable-random=LIST    component groups. LIST is a comma-separated list
 477                            of NAME[:PROB] entries where NAME is a component
 478                            (group) and PROB the probability associated with
 479                            NAME (default 0.5).
 480   --random-seed=VALUE      seed value for --enable/disable-random
 481   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 482                            (only applies to --disable-optimizations builds)
 483   --enable-ossfuzz         Enable building fuzzer tool
 484   --libfuzzer=PATH         path to libfuzzer
 485   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
 486                            in the name) of tests whose result is ignored
 487   --enable-linux-perf      enable Linux Performance Monitor API
 488   --disable-large-tests    disable tests that use a large amount of memory
 489
 490 NOTE: Object files are built at the place where configure is launched.
 491 EOF
 492   exit 0
 493 }
 494
 495 if test -t 1 && which tput >/dev/null 2>&1; then
 496     ncolors=$(tput colors)
 497     if test -n "$ncolors" && test $ncolors -ge 8; then
 498         bold_color=$(tput bold)
 499         warn_color=$(tput setaf 3)
 500         error_color=$(tput setaf 1)
 501         reset_color=$(tput sgr0)
 502     fi
 503     # 72 used instead of 80 since that's the default of pr
 504     ncols=$(tput cols)
 505 fi
 506 : ${ncols:=72}
 507
 508 log(){
 509     echo "$@" >> $logfile
 510 }
 511
 512 log_file(){
 513     log BEGIN "$1"
 514     log_file_i=1
 515     while IFS= read -r log_file_line; do
 516         printf '%5d\t%s\n' "$log_file_i" "$log_file_line"
 517         log_file_i=$(($log_file_i+1))
 518     done < "$1" >> "$logfile"
 519     log END "$1"
 520 }
 521
 522 warn(){
 523     log "WARNING: $*"
 524     WARNINGS="${WARNINGS}WARNING: $*\n"
 525 }
 526
 527 die(){
 528     log "$@"
 529     echo "$error_color$bold_color$@$reset_color"
 530     cat <<EOF
 531
 532 If you think configure made a mistake, make sure you are using the latest
 533 version from Git.  If the latest version fails, report the problem to the
 534 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 535 EOF
 536     if disabled logging; then
 537         cat <<EOF
 538 Rerun configure with logging enabled (do not use --disable-logging), and
 539 include the log this produces with your report.
 540 EOF
 541     else
 542         cat <<EOF
 543 Include the log file "$logfile" produced by configure as this will help
 544 solve the problem.
 545 EOF
 546     fi
 547     exit 1
 548 }
 549
 550 # Avoid locale weirdness, besides we really just want to translate ASCII.
 551 toupper(){
 552     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 553 }
 554
 555 tolower(){
 556     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 557 }
 558
 559 c_escape(){
 560     echo "$*" | sed 's/["\\]/\\\0/g'
 561 }
 562
 563 sh_quote(){
 564     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 565     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 566     echo "$v"
 567 }
 568
 569 cleanws(){
 570     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 571 }
 572
 573 filter(){
 574     pat=$1
 575     shift
 576     for v; do
 577         eval "case '$v' in $pat) printf '%s ' '$v' ;; esac"
 578     done
 579 }
 580
 581 filter_out(){
 582     pat=$1
 583     shift
 584     for v; do
 585         eval "case '$v' in $pat) ;; *) printf '%s ' '$v' ;; esac"
 586     done
 587 }
 588
 589 map(){
 590     m=$1
 591     shift
 592     for v; do eval $m; done
 593 }
 594
 595 add_suffix(){
 596     suffix=$1
 597     shift
 598     for v; do echo ${v}${suffix}; done
 599 }
 600
 601 remove_suffix(){
 602     suffix=$1
 603     shift
 604     for v; do echo ${v%$suffix}; done
 605 }
 606
 607 set_all(){
 608     value=$1
 609     shift
 610     for var in $*; do
 611         eval $var=$value
 612     done
 613 }
 614
 615 set_weak(){
 616     value=$1
 617     shift
 618     for var; do
 619         eval : \${$var:=$value}
 620     done
 621 }
 622
 623 sanitize_var_name(){
 624     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 625 }
 626
 627 set_sanitized(){
 628     var=$1
 629     shift
 630     eval $(sanitize_var_name "$var")='$*'
 631 }
 632
 633 get_sanitized(){
 634     eval echo \$$(sanitize_var_name "$1")
 635 }
 636
 637 pushvar(){
 638     for pvar in $*; do
 639         eval level=\${${pvar}_level:=0}
 640         eval ${pvar}_${level}="\$$pvar"
 641         eval ${pvar}_level=$(($level+1))
 642     done
 643 }
 644
 645 popvar(){
 646     for pvar in $*; do
 647         eval level=\${${pvar}_level:-0}
 648         test $level = 0 && continue
 649         eval level=$(($level-1))
 650         eval $pvar="\${${pvar}_${level}}"
 651         eval ${pvar}_level=$level
 652         eval unset ${pvar}_${level}
 653     done
 654 }
 655
 656 request(){
 657     for var in $*; do
 658         eval ${var}_requested=yes
 659         eval $var=
 660     done
 661 }
 662
 663 warn_if_gets_disabled(){
 664     for var in $*; do
 665         WARN_IF_GETS_DISABLED_LIST="$WARN_IF_GETS_DISABLED_LIST $var"
 666     done
 667 }
 668
 669 enable(){
 670     set_all yes $*
 671 }
 672
 673 disable(){
 674     set_all no $*
 675 }
 676
 677 disable_with_reason(){
 678     disable $1
 679     eval "${1}_disable_reason=\"$2\""
 680     if requested $1; then
 681         die "ERROR: $1 requested, but $2"
 682     fi
 683 }
 684
 685 enable_weak(){
 686     set_weak yes $*
 687 }
 688
 689 disable_weak(){
 690     set_weak no $*
 691 }
 692
 693 enable_sanitized(){
 694     for var; do
 695         enable $(sanitize_var_name $var)
 696     done
 697 }
 698
 699 disable_sanitized(){
 700     for var; do
 701         disable $(sanitize_var_name $var)
 702     done
 703 }
 704
 705 do_enable_deep(){
 706     for var; do
 707         enabled $var && continue
 708         set -- $var
 709         eval enable_deep \$${var}_select
 710         var=$1
 711         eval enable_deep_weak \$${var}_suggest
 712     done
 713 }
 714
 715 enable_deep(){
 716     do_enable_deep $*
 717     enable $*
 718 }
 719
 720 enable_deep_weak(){
 721     for var; do
 722         disabled $var && continue
 723         set -- $var
 724         do_enable_deep $var
 725         var=$1
 726         enable_weak $var
 727     done
 728 }
 729
 730 requested(){
 731     test "${1#!}" = "$1" && op="=" || op="!="
 732     eval test "x\$${1#!}_requested" $op "xyes"
 733 }
 734
 735 enabled(){
 736     test "${1#!}" = "$1" && op="=" || op="!="
 737     eval test "x\$${1#!}" $op "xyes"
 738 }
 739
 740 disabled(){
 741     test "${1#!}" = "$1" && op="=" || op="!="
 742     eval test "x\$${1#!}" $op "xno"
 743 }
 744
 745 enabled_all(){
 746     for opt; do
 747         enabled $opt || return 1
 748     done
 749 }
 750
 751 disabled_all(){
 752     for opt; do
 753         disabled $opt || return 1
 754     done
 755 }
 756
 757 enabled_any(){
 758     for opt; do
 759         enabled $opt && return 0
 760     done
 761 }
 762
 763 disabled_any(){
 764     for opt; do
 765         disabled $opt && return 0
 766     done
 767     return 1
 768 }
 769
 770 set_default(){
 771     for opt; do
 772         eval : \${$opt:=\$${opt}_default}
 773     done
 774 }
 775
 776 is_in(){
 777     value=$1
 778     shift
 779     for var in $*; do
 780         [ $var = $value ] && return 0
 781     done
 782     return 1
 783 }
 784
 785 # The cfg loop is very hot (several thousands iterations), and in bash also
 786 # potentialy quite slow. Try to abort the iterations early, preferably without
 787 # calling functions. 70%+ of the time cfg is already done or without deps.
 788 check_deps(){
 789     for cfg; do
 790         eval [ x\$${cfg}_checking = xdone ] && continue
 791         eval [ x\$${cfg}_checking = xinprogress ] && die "Circular dependency for $cfg."
 792
 793         eval "
 794         dep_all=\$${cfg}_deps
 795         dep_any=\$${cfg}_deps_any
 796         dep_con=\$${cfg}_conflict
 797         dep_sel=\$${cfg}_select
 798         dep_sgs=\$${cfg}_suggest
 799         dep_ifa=\$${cfg}_if
 800         dep_ifn=\$${cfg}_if_any
 801         "
 802
 803         # most of the time here $cfg has no deps - avoid costly no-op work
 804         if [ "$dep_all$dep_any$dep_con$dep_sel$dep_sgs$dep_ifa$dep_ifn" ]; then
 805             eval ${cfg}_checking=inprogress
 806
 807             set -- $cfg "$dep_all" "$dep_any" "$dep_con" "$dep_sel" "$dep_sgs" "$dep_ifa" "$dep_ifn"
 808             check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
 809             cfg=$1; dep_all=$2; dep_any=$3; dep_con=$4; dep_sel=$5 dep_sgs=$6; dep_ifa=$7; dep_ifn=$8
 810
 811             [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 812             [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 813             enabled_all  $dep_all || { disable_with_reason $cfg "not all dependencies are satisfied: $dep_all"; }
 814             enabled_any  $dep_any || { disable_with_reason $cfg "not any dependency is satisfied: $dep_any"; }
 815             disabled_all $dep_con || { disable_with_reason $cfg "some conflicting dependencies are unsatisfied: $dep_con"; }
 816             disabled_any $dep_sel && { disable_with_reason $cfg "some selected dependency is unsatisfied: $dep_sel"; }
 817
 818             enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
 819
 820             for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
 821                 # filter out library deps, these do not belong in extralibs
 822                 is_in $dep $LIBRARY_LIST && continue
 823                 enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
 824             done
 825         fi
 826
 827         eval ${cfg}_checking=done
 828     done
 829 }
 830
 831 print_config(){
 832     pfx=$1
 833     files=$2
 834     shift 2
 835     map 'eval echo "$v \${$v:-no}"' "$@" |
 836     awk "BEGIN { split(\"$files\", files) }
 837         {
 838             c = \"$pfx\" toupper(\$1);
 839             v = \$2;
 840             sub(/yes/, 1, v);
 841             sub(/no/,  0, v);
 842             for (f in files) {
 843                 file = files[f];
 844                 if (file ~ /\\.h\$/) {
 845                     printf(\"#define %s %d\\n\", c, v) >>file;
 846                 } else if (file ~ /\\.asm\$/) {
 847                     printf(\"%%define %s %d\\n\", c, v) >>file;
 848                 } else if (file ~ /\\.mak\$/) {
 849                     n = -v ? \"\" : \"!\";
 850                     printf(\"%s%s=yes\\n\", n, c) >>file;
 851                 } else if (file ~ /\\.texi\$/) {
 852                     pre = -v ? \"\" : \"@c \";
 853                     yesno = \$2;
 854                     c2 = tolower(c);
 855                     gsub(/_/, \"-\", c2);
 856                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 857                 }
 858             }
 859         }"
 860 }
 861
 862 print_enabled(){
 863     suf=$1
 864     shift
 865     for v; do
 866         enabled $v && printf "%s\n" ${v%$suf}
 867     done
 868 }
 869
 870 append(){
 871     var=$1
 872     shift
 873     eval "$var=\"\$$var $*\""
 874 }
 875
 876 prepend(){
 877     var=$1
 878     shift
 879     eval "$var=\"$* \$$var\""
 880 }
 881
 882 reverse () {
 883     eval '
 884         reverse_out=
 885         for v in $'$1'; do
 886             reverse_out="$v $reverse_out"
 887         done
 888         '$1'=$reverse_out
 889     '
 890 }
 891
 892 # keeps the last occurence of each non-unique item
 893 unique(){
 894     unique_out=
 895     eval unique_in=\$$1
 896     reverse unique_in
 897     for v in $unique_in; do
 898         # " $unique_out" +space such that every item is surrounded with spaces
 899         case " $unique_out" in *" $v "*) continue; esac  # already in list
 900         unique_out="$unique_out$v "
 901     done
 902     reverse unique_out
 903     eval $1=\$unique_out
 904 }
 905
 906 resolve(){
 907     resolve_out=
 908     eval resolve_in=\$$1
 909     for v in $resolve_in; do
 910         eval 'resolve_out="$resolve_out$'$v' "'
 911     done
 912     eval $1=\$resolve_out
 913 }
 914
 915 add_cppflags(){
 916     append CPPFLAGS "$@"
 917 }
 918
 919 add_cflags(){
 920     append CFLAGS $($cflags_filter "$@")
 921 }
 922
 923 add_cflags_headers(){
 924     append CFLAGS_HEADERS $($cflags_filter "$@")
 925 }
 926
 927 add_cxxflags(){
 928     append CXXFLAGS $($cflags_filter "$@")
 929 }
 930
 931 add_objcflags(){
 932     append OBJCFLAGS $($objcflags_filter "$@")
 933 }
 934
 935 add_asflags(){
 936     append ASFLAGS $($asflags_filter "$@")
 937 }
 938
 939 add_ldflags(){
 940     append LDFLAGS $($ldflags_filter "$@")
 941 }
 942
 943 add_ldexeflags(){
 944     append LDEXEFLAGS $($ldflags_filter "$@")
 945 }
 946
 947 add_ldsoflags(){
 948     append LDSOFLAGS $($ldflags_filter "$@")
 949 }
 950
 951 add_extralibs(){
 952     prepend extralibs $($ldflags_filter "$@")
 953 }
 954
 955 add_stripflags(){
 956     append ASMSTRIPFLAGS "$@"
 957 }
 958
 959 add_host_cppflags(){
 960     append host_cppflags "$@"
 961 }
 962
 963 add_host_cflags(){
 964     append host_cflags $($host_cflags_filter "$@")
 965 }
 966
 967 add_host_ldflags(){
 968     append host_ldflags $($host_ldflags_filter "$@")
 969 }
 970
 971 add_compat(){
 972     append compat_objs $1
 973     shift
 974     map 'add_cppflags -D$v' "$@"
 975 }
 976
 977 test_cmd(){
 978     log "$@"
 979     "$@" >> $logfile 2>&1
 980 }
 981
 982 test_stat(){
 983     log test_stat "$@"
 984     stat "$1" >> $logfile 2>&1
 985 }
 986
 987 cc_e(){
 988     eval printf '%s\\n' $CC_E
 989 }
 990
 991 cc_o(){
 992     eval printf '%s\\n' $CC_O
 993 }
 994
 995 as_o(){
 996     eval printf '%s\\n' $AS_O
 997 }
 998
 999 x86asm_o(){
1000     eval printf '%s\\n' $X86ASM_O
1001 }
1002
1003 ld_o(){
1004     eval printf '%s\\n' $LD_O
1005 }
1006
1007 hostcc_e(){
1008     eval printf '%s\\n' $HOSTCC_E
1009 }
1010
1011 hostcc_o(){
1012     eval printf '%s\\n' $HOSTCC_O
1013 }
1014
1015 nvcc_o(){
1016     eval printf '%s\\n' $NVCC_O
1017 }
1018
1019 test_cc(){
1020     log test_cc "$@"
1021     cat > $TMPC
1022     log_file $TMPC
1023     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
1024 }
1025
1026 test_cxx(){
1027     log test_cxx "$@"
1028     cat > $TMPCPP
1029     log_file $TMPCPP
1030     test_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
1031 }
1032
1033 test_objcc(){
1034     log test_objcc "$@"
1035     cat > $TMPM
1036     log_file $TMPM
1037     test_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
1038 }
1039
1040 test_nvcc(){
1041     log test_nvcc "$@"
1042     cat > $TMPCU
1043     log_file $TMPCU
1044     tmpcu_=$TMPCU
1045     tmpo_=$TMPO
1046     [ -x "$(command -v cygpath)" ] && tmpcu_=$(cygpath -m $tmpcu_) && tmpo_=$(cygpath -m $tmpo_)
1047     test_cmd $nvcc $nvccflags "$@" $NVCC_C $(nvcc_o $tmpo_) $tmpcu_
1048 }
1049
1050 check_nvcc() {
1051     log check_nvcc "$@"
1052     name=$1
1053     shift 1
1054     disabled $name && return
1055     disable $name
1056     test_nvcc "$@" <<EOF && enable $name
1057 extern "C" {
1058     __global__ void hello(unsigned char *data) {}
1059 }
1060 EOF
1061 }
1062
1063 test_cpp(){
1064     log test_cpp "$@"
1065     cat > $TMPC
1066     log_file $TMPC
1067     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
1068 }
1069
1070 test_as(){
1071     log test_as "$@"
1072     cat > $TMPS
1073     log_file $TMPS
1074     test_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
1075 }
1076
1077 test_x86asm(){
1078     log test_x86asm "$@"
1079     echo "$1" > $TMPASM
1080     log_file $TMPASM
1081     shift
1082     test_cmd $x86asmexe $X86ASMFLAGS -Werror "$@" $(x86asm_o $TMPO) $TMPASM
1083 }
1084
1085 check_cmd(){
1086     log check_cmd "$@"
1087     cmd=$1
1088     disabled $cmd && return
1089     disable $cmd
1090     test_cmd $@ && enable $cmd
1091 }
1092
1093 check_as(){
1094     log check_as "$@"
1095     name=$1
1096     code=$2
1097     shift 2
1098     disable $name
1099     test_as $@ <<EOF && enable $name
1100 $code
1101 EOF
1102 }
1103
1104 check_inline_asm(){
1105     log check_inline_asm "$@"
1106     name="$1"
1107     code="$2"
1108     shift 2
1109     disable $name
1110     test_cc "$@" <<EOF && enable $name
1111 void foo(void){ __asm__ volatile($code); }
1112 EOF
1113 }
1114
1115 check_inline_asm_flags(){
1116     log check_inline_asm_flags "$@"
1117     name="$1"
1118     code="$2"
1119     flags=''
1120     shift 2
1121     while [ "$1" != "" ]; do
1122       append flags $1
1123       shift
1124     done;
1125     disable $name
1126     cat > $TMPC <<EOF
1127 void foo(void){ __asm__ volatile($code); }
1128 EOF
1129     log_file $TMPC
1130     test_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
1131     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
1132 }
1133
1134 check_insn(){
1135     log check_insn "$@"
1136     check_inline_asm ${1}_inline "\"$2\""
1137     check_as ${1}_external "$2"
1138 }
1139
1140 check_x86asm(){
1141     log check_x86asm "$@"
1142     name=$1
1143     shift
1144     disable $name
1145     test_x86asm "$@" && enable $name
1146 }
1147
1148 test_ld(){
1149     log test_ld "$@"
1150     type=$1
1151     shift 1
1152     flags=$(filter_out '-l*|*.so' $@)
1153     libs=$(filter '-l*|*.so' $@)
1154     test_$type $($cflags_filter $flags) || return
1155     flags=$($ldflags_filter $flags)
1156     libs=$($ldflags_filter $libs)
1157     test_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1158 }
1159
1160 check_ld(){
1161     log check_ld "$@"
1162     type=$1
1163     name=$2
1164     shift 2
1165     disable $name
1166     test_ld $type $@ && enable $name
1167 }
1168
1169 print_include(){
1170     hdr=$1
1171     test "${hdr%.h}" = "${hdr}" &&
1172         echo "#include $hdr"    ||
1173         echo "#include <$hdr>"
1174 }
1175
1176 test_code(){
1177     log test_code "$@"
1178     check=$1
1179     headers=$2
1180     code=$3
1181     shift 3
1182     {
1183         for hdr in $headers; do
1184             print_include $hdr
1185         done
1186         echo "int main(void) { $code; return 0; }"
1187     } | test_$check "$@"
1188 }
1189
1190 check_cppflags(){
1191     log check_cppflags "$@"
1192     test_cpp "$@" <<EOF && append CPPFLAGS "$@"
1193 #include <stdlib.h>
1194 EOF
1195 }
1196
1197 test_cflags(){
1198     log test_cflags "$@"
1199     set -- $($cflags_filter "$@")
1200     test_cc "$@" <<EOF
1201 int x;
1202 EOF
1203 }
1204
1205 check_cflags(){
1206     log check_cflags "$@"
1207     test_cflags "$@" && add_cflags "$@"
1208 }
1209
1210 check_cxxflags(){
1211     log check_cxxflags "$@"
1212     set -- $($cflags_filter "$@")
1213     test_cxx "$@" <<EOF && append CXXFLAGS "$@"
1214 int x;
1215 EOF
1216 }
1217
1218 test_objcflags(){
1219     log test_objcflags "$@"
1220     set -- $($objcflags_filter "$@")
1221     test_objcc "$@" <<EOF
1222 int x;
1223 EOF
1224 }
1225
1226 check_objcflags(){
1227     log check_objcflags "$@"
1228     test_objcflags "$@" && add_objcflags "$@"
1229 }
1230
1231 test_ldflags(){
1232     log test_ldflags "$@"
1233     set -- $($ldflags_filter "$@")
1234     test_ld "cc" "$@" <<EOF
1235 int main(void){ return 0; }
1236 EOF
1237 }
1238
1239 check_ldflags(){
1240     log check_ldflags "$@"
1241     test_ldflags "$@" && add_ldflags "$@"
1242 }
1243
1244 test_stripflags(){
1245     log test_stripflags "$@"
1246     # call test_cc to get a fresh TMPO
1247     test_cc <<EOF
1248 int main(void) { return 0; }
1249 EOF
1250     test_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1251 }
1252
1253 check_stripflags(){
1254     log check_stripflags "$@"
1255     test_stripflags "$@" && add_stripflags "$@"
1256 }
1257
1258 check_headers(){
1259     log check_headers "$@"
1260     headers=$1
1261     shift
1262     disable_sanitized $headers
1263     {
1264         for hdr in $headers; do
1265             print_include $hdr
1266         done
1267         echo "int x;"
1268     } | test_cpp "$@" && enable_sanitized $headers
1269 }
1270
1271 check_header_objcc(){
1272     log check_header_objcc "$@"
1273     rm -f -- "$TMPO"
1274     header=$1
1275     shift
1276     disable_sanitized $header
1277     {
1278        echo "#include <$header>"
1279        echo "int main(void) { return 0; }"
1280     } | test_objcc && test_stat "$TMPO" && enable_sanitized $header
1281 }
1282
1283 check_apple_framework(){
1284     log check_apple_framework "$@"
1285     framework="$1"
1286     name="$(tolower $framework)"
1287     header="${framework}/${framework}.h"
1288     disable $name
1289     check_header_objcc $header &&
1290         enable $name && eval ${name}_extralibs='"-framework $framework"'
1291 }
1292
1293 check_func(){
1294     log check_func "$@"
1295     func=$1
1296     shift
1297     disable $func
1298     test_ld "cc" "$@" <<EOF && enable $func
1299 extern int $func();
1300 int main(void){ $func(); }
1301 EOF
1302 }
1303
1304 check_complexfunc(){
1305     log check_complexfunc "$@"
1306     func=$1
1307     narg=$2
1308     shift 2
1309     test $narg = 2 && args="f, g" || args="f * I"
1310     disable $func
1311     test_ld "cc" "$@" <<EOF && enable $func
1312 #include <complex.h>
1313 #include <math.h>
1314 float foo(complex float f, complex float g) { return $func($args); }
1315 int main(void){ return (int) foo; }
1316 EOF
1317 }
1318
1319 check_mathfunc(){
1320     log check_mathfunc "$@"
1321     func=$1
1322     narg=$2
1323     shift 2
1324     test $narg = 2 && args="f, g" || args="f"
1325     disable $func
1326     test_ld "cc" "$@" <<EOF && enable $func
1327 #include <math.h>
1328 float foo(float f, float g) { return $func($args); }
1329 int main(void){ return (int) foo; }
1330 EOF
1331 }
1332
1333 check_func_headers(){
1334     log check_func_headers "$@"
1335     headers=$1
1336     funcs=$2
1337     shift 2
1338     {
1339         for hdr in $headers; do
1340             print_include $hdr
1341         done
1342         echo "#include <stdint.h>"
1343         for func in $funcs; do
1344             echo "long check_$func(void) { return (long) $func; }"
1345         done
1346         echo "int main(void) { int ret = 0;"
1347         # LTO could optimize out the test functions without this
1348         for func in $funcs; do
1349             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1350         done
1351         echo "return ret; }"
1352     } | test_ld "cc" "$@" && enable $funcs && enable_sanitized $headers
1353 }
1354
1355 check_class_headers_cpp(){
1356     log check_class_headers_cpp "$@"
1357     headers=$1
1358     classes=$2
1359     shift 2
1360     {
1361         for hdr in $headers; do
1362             echo "#include <$hdr>"
1363         done
1364         echo "int main(void) { "
1365         i=1
1366         for class in $classes; do
1367             echo "$class obj$i;"
1368             i=$(expr $i + 1)
1369         done
1370         echo "return 0; }"
1371     } | test_ld "cxx" "$@" && enable $funcs && enable_sanitized $headers
1372 }
1373
1374 test_cpp_condition(){
1375     log test_cpp_condition "$@"
1376     header=$1
1377     condition=$2
1378     shift 2
1379     test_cpp "$@" <<EOF
1380 #include <$header>
1381 #if !($condition)
1382 #error "unsatisfied condition: $condition"
1383 #endif
1384 EOF
1385 }
1386
1387 check_cpp_condition(){
1388     log check_cpp_condition "$@"
1389     name=$1
1390     shift 1
1391     disable $name
1392     test_cpp_condition "$@" && enable $name
1393 }
1394
1395 test_cflags_cc(){
1396     log test_cflags_cc "$@"
1397     flags=$1
1398     header=$2
1399     condition=$3
1400     shift 3
1401     set -- $($cflags_filter "$flags")
1402     test_cc "$@" <<EOF
1403 #include <$header>
1404 #if !($condition)
1405 #error "unsatisfied condition: $condition"
1406 #endif
1407 EOF
1408 }
1409
1410 check_lib(){
1411     log check_lib "$@"
1412     name="$1"
1413     headers="$2"
1414     funcs="$3"
1415     shift 3
1416     disable $name
1417     check_func_headers "$headers" "$funcs" "$@" &&
1418         enable $name && eval ${name}_extralibs="\$@"
1419 }
1420
1421 check_lib_cpp(){
1422     log check_lib_cpp "$@"
1423     name="$1"
1424     headers="$2"
1425     classes="$3"
1426     shift 3
1427     disable $name
1428     check_class_headers_cpp "$headers" "$classes" "$@" &&
1429         enable $name && eval ${name}_extralibs="\$@"
1430 }
1431
1432 test_pkg_config(){
1433     log test_pkg_config "$@"
1434     name="$1"
1435     pkg_version="$2"
1436     pkg="${2%% *}"
1437     headers="$3"
1438     funcs="$4"
1439     shift 4
1440     disable $name
1441     test_cmd $pkg_config --exists --print-errors $pkg_version || return
1442     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1443     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1444     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1445         enable $name &&
1446         set_sanitized "${name}_cflags"    $pkg_cflags &&
1447         set_sanitized "${name}_extralibs" $pkg_libs
1448 }
1449
1450 check_pkg_config(){
1451     log check_pkg_config "$@"
1452     name="$1"
1453     test_pkg_config "$@" &&
1454         eval add_cflags \$${name}_cflags
1455 }
1456
1457 test_exec(){
1458     test_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1459 }
1460
1461 check_exec_crash(){
1462     log check_exec_crash "$@"
1463     code=$(cat)
1464
1465     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1466     # are safe but may not be available everywhere.  Thus we use
1467     # raise(SIGTERM) instead.  The check is run in a subshell so we
1468     # can redirect the "Terminated" message from the shell.  SIGBUS
1469     # is not defined by standard C so it is used conditionally.
1470
1471     (test_exec "$@") >> $logfile 2>&1 <<EOF
1472 #include <signal.h>
1473 static void sighandler(int sig){
1474     raise(SIGTERM);
1475 }
1476 int foo(void){
1477     $code
1478 }
1479 int (*func_ptr)(void) = foo;
1480 int main(void){
1481     signal(SIGILL, sighandler);
1482     signal(SIGFPE, sighandler);
1483     signal(SIGSEGV, sighandler);
1484 #ifdef SIGBUS
1485     signal(SIGBUS, sighandler);
1486 #endif
1487     return func_ptr();
1488 }
1489 EOF
1490 }
1491
1492 check_type(){
1493     log check_type "$@"
1494     headers=$1
1495     type=$2
1496     shift 2
1497     disable_sanitized "$type"
1498     test_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1499 }
1500
1501 check_struct(){
1502     log check_struct "$@"
1503     headers=$1
1504     struct=$2
1505     member=$3
1506     shift 3
1507     disable_sanitized "${struct}_${member}"
1508     test_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1509         enable_sanitized "${struct}_${member}"
1510 }
1511
1512 check_builtin(){
1513     log check_builtin "$@"
1514     name=$1
1515     headers=$2
1516     builtin=$3
1517     shift 3
1518     disable "$name"
1519     test_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1520 }
1521
1522 check_compile_assert(){
1523     log check_compile_assert "$@"
1524     name=$1
1525     headers=$2
1526     condition=$3
1527     shift 3
1528     disable "$name"
1529     test_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1530 }
1531
1532 check_cc(){
1533     log check_cc "$@"
1534     name=$1
1535     shift
1536     disable "$name"
1537     test_code cc "$@" && enable "$name"
1538 }
1539
1540 require(){
1541     log require "$@"
1542     name_version="$1"
1543     name="${1%% *}"
1544     shift
1545     check_lib $name "$@" || die "ERROR: $name_version not found"
1546 }
1547
1548 require_cc(){
1549     log require_cc "$@"
1550     name="$1"
1551     check_cc "$@" || die "ERROR: $name failed"
1552 }
1553
1554 require_cpp(){
1555     log require_cpp "$@"
1556     name_version="$1"
1557     name="${1%% *}"
1558     shift
1559     check_lib_cpp "$name" "$@" || die "ERROR: $name_version not found"
1560 }
1561
1562 require_headers(){
1563     log require_headers "$@"
1564     headers="$1"
1565     check_headers "$@" || die "ERROR: $headers not found"
1566 }
1567
1568 require_cpp_condition(){
1569     log require_cpp_condition "$@"
1570     condition="$3"
1571     check_cpp_condition "$@" || die "ERROR: $condition not satisfied"
1572 }
1573
1574 require_pkg_config(){
1575     log require_pkg_config "$@"
1576     pkg_version="$2"
1577     check_pkg_config "$@" || die "ERROR: $pkg_version not found using pkg-config$pkg_config_fail_message"
1578 }
1579
1580 test_host_cc(){
1581     log test_host_cc "$@"
1582     cat > $TMPC
1583     log_file $TMPC
1584     test_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1585 }
1586
1587 test_host_cpp(){
1588     log test_host_cpp "$@"
1589     cat > $TMPC
1590     log_file $TMPC
1591     test_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1592 }
1593
1594 check_host_cppflags(){
1595     log check_host_cppflags "$@"
1596     test_host_cpp "$@" <<EOF && append host_cppflags "$@"
1597 #include <stdlib.h>
1598 EOF
1599 }
1600
1601 check_host_cflags(){
1602     log check_host_cflags "$@"
1603     set -- $($host_cflags_filter "$@")
1604     test_host_cc "$@" <<EOF && append host_cflags "$@"
1605 int x;
1606 EOF
1607 }
1608
1609 test_host_cpp_condition(){
1610     log test_host_cpp_condition "$@"
1611     header=$1
1612     condition=$2
1613     shift 2
1614     test_host_cpp "$@" <<EOF
1615 #include <$header>
1616 #if !($condition)
1617 #error "unsatisfied condition: $condition"
1618 #endif
1619 EOF
1620 }
1621
1622 check_host_cpp_condition(){
1623     log check_host_cpp_condition "$@"
1624     name=$1
1625     shift 1
1626     disable $name
1627     test_host_cpp_condition "$@" && enable $name
1628 }
1629
1630 cp_if_changed(){
1631     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1632     mkdir -p "$(dirname $2)"
1633     cp -f "$1" "$2"
1634 }
1635
1636 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1637 # system-dependent things.
1638
1639 AVCODEC_COMPONENTS="
1640     bsfs
1641     decoders
1642     encoders
1643     hwaccels
1644     parsers
1645 "
1646
1647 AVDEVICE_COMPONENTS="
1648     indevs
1649     outdevs
1650 "
1651
1652 AVFILTER_COMPONENTS="
1653     filters
1654 "
1655
1656 AVFORMAT_COMPONENTS="
1657     demuxers
1658     muxers
1659     protocols
1660 "
1661
1662 COMPONENT_LIST="
1663     $AVCODEC_COMPONENTS
1664     $AVDEVICE_COMPONENTS
1665     $AVFILTER_COMPONENTS
1666     $AVFORMAT_COMPONENTS
1667 "
1668
1669 EXAMPLE_LIST="
1670     avio_list_dir_example
1671     avio_reading_example
1672     decode_audio_example
1673     decode_video_example
1674     demuxing_decoding_example
1675     encode_audio_example
1676     encode_video_example
1677     extract_mvs_example
1678     filter_audio_example
1679     filtering_audio_example
1680     filtering_video_example
1681     http_multiclient_example
1682     hw_decode_example
1683     metadata_example
1684     muxing_example
1685     qsvdec_example
1686     remuxing_example
1687     resampling_audio_example
1688     scaling_video_example
1689     transcode_aac_example
1690     transcoding_example
1691     vaapi_encode_example
1692     vaapi_transcode_example
1693 "
1694
1695 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1696     alsa
1697     appkit
1698     avfoundation
1699     bzlib
1700     coreimage
1701     iconv
1702     libxcb
1703     libxcb_shm
1704     libxcb_shape
1705     libxcb_xfixes
1706     lzma
1707     schannel
1708     sdl2
1709     securetransport
1710     sndio
1711     xlib
1712     zlib
1713 "
1714
1715 EXTERNAL_LIBRARY_GPL_LIST="
1716     avisynth
1717     frei0r
1718     libcdio
1719     libdavs2
1720     librubberband
1721     libvidstab
1722     libx264
1723     libx265
1724     libxavs
1725     libxavs2
1726     libxvid
1727 "
1728
1729 EXTERNAL_LIBRARY_NONFREE_LIST="
1730     decklink
1731     libfdk_aac
1732     openssl
1733     libtls
1734 "
1735
1736 EXTERNAL_LIBRARY_VERSION3_LIST="
1737     gmp
1738     libaribb24
1739     liblensfun
1740     libopencore_amrnb
1741     libopencore_amrwb
1742     libvmaf
1743     libvo_amrwbenc
1744     mbedtls
1745     rkmpp
1746 "
1747
1748 EXTERNAL_LIBRARY_GPLV3_LIST="
1749     libsmbclient
1750 "
1751
1752 EXTERNAL_LIBRARY_LIST="
1753     $EXTERNAL_LIBRARY_GPL_LIST
1754     $EXTERNAL_LIBRARY_NONFREE_LIST
1755     $EXTERNAL_LIBRARY_VERSION3_LIST
1756     $EXTERNAL_LIBRARY_GPLV3_LIST
1757     chromaprint
1758     gcrypt
1759     gnutls
1760     jni
1761     ladspa
1762     libaom
1763     libass
1764     libbluray
1765     libbs2b
1766     libcaca
1767     libcelt
1768     libcodec2
1769     libdav1d
1770     libdc1394
1771     libdrm
1772     libflite
1773     libfontconfig
1774     libfreetype
1775     libfribidi
1776     libglslang
1777     libgme
1778     libgsm
1779     libiec61883
1780     libilbc
1781     libjack
1782     libklvanc
1783     libkvazaar
1784     libmodplug
1785     libmp3lame
1786     libmysofa
1787     libopencv
1788     libopenh264
1789     libopenjpeg
1790     libopenmpt
1791     libopus
1792     libpulse
1793     librabbitmq
1794     librav1e
1795     librsvg
1796     librtmp
1797     libshine
1798     libsmbclient
1799     libsnappy
1800     libsoxr
1801     libspeex
1802     libsrt
1803     libssh
1804     libtensorflow
1805     libtesseract
1806     libtheora
1807     libtwolame
1808     libv4l2
1809     libvorbis
1810     libvpx
1811     libwavpack
1812     libwebp
1813     libxml2
1814     libzimg
1815     libzmq
1816     libzvbi
1817     lv2
1818     mediacodec
1819     openal
1820     opengl
1821     pocketsphinx
1822     vapoursynth
1823 "
1824
1825 HWACCEL_AUTODETECT_LIBRARY_LIST="
1826     amf
1827     audiotoolbox
1828     crystalhd
1829     cuda
1830     cuda_llvm
1831     cuvid
1832     d3d11va
1833     dxva2
1834     ffnvcodec
1835     nvdec
1836     nvenc
1837     vaapi
1838     vdpau
1839     videotoolbox
1840     v4l2_m2m
1841     xvmc
1842 "
1843
1844 # catchall list of things that require external libs to link
1845 EXTRALIBS_LIST="
1846     cpu_init
1847     cws2fws
1848 "
1849
1850 HWACCEL_LIBRARY_NONFREE_LIST="
1851     cuda_nvcc
1852     cuda_sdk
1853     libnpp
1854 "
1855
1856 HWACCEL_LIBRARY_LIST="
1857     $HWACCEL_LIBRARY_NONFREE_LIST
1858     libmfx
1859     mmal
1860     omx
1861     opencl
1862     vulkan
1863 "
1864
1865 DOCUMENT_LIST="
1866     doc
1867     htmlpages
1868     manpages
1869     podpages
1870     txtpages
1871 "
1872
1873 FEATURE_LIST="
1874     ftrapv
1875     gray
1876     hardcoded_tables
1877     omx_rpi
1878     runtime_cpudetect
1879     safe_bitstream_reader
1880     shared
1881     small
1882     static
1883     swscale_alpha
1884 "
1885
1886 # this list should be kept in linking order
1887 LIBRARY_LIST="
1888     avdevice
1889     avfilter
1890     swscale
1891     postproc
1892     avformat
1893     avcodec
1894     swresample
1895     avresample
1896     avutil
1897 "
1898
1899 LICENSE_LIST="
1900     gpl
1901     nonfree
1902     version3
1903 "
1904
1905 PROGRAM_LIST="
1906     ffplay
1907     ffprobe
1908     ffmpeg
1909 "
1910
1911 SUBSYSTEM_LIST="
1912     dct
1913     dwt
1914     error_resilience
1915     faan
1916     fast_unaligned
1917     fft
1918     lsp
1919     lzo
1920     mdct
1921     pixelutils
1922     network
1923     rdft
1924 "
1925
1926 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1927 CONFIG_LIST="
1928     $DOCUMENT_LIST
1929     $EXAMPLE_LIST
1930     $EXTERNAL_LIBRARY_LIST
1931     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1932     $HWACCEL_LIBRARY_LIST
1933     $HWACCEL_AUTODETECT_LIBRARY_LIST
1934     $FEATURE_LIST
1935     $LICENSE_LIST
1936     $LIBRARY_LIST
1937     $PROGRAM_LIST
1938     $SUBSYSTEM_LIST
1939     autodetect
1940     fontconfig
1941     large_tests
1942     linux_perf
1943     memory_poisoning
1944     neon_clobber_test
1945     ossfuzz
1946     pic
1947     thumb
1948     valgrind_backtrace
1949     xmm_clobber_test
1950     $COMPONENT_LIST
1951 "
1952
1953 THREADS_LIST="
1954     pthreads
1955     os2threads
1956     w32threads
1957 "
1958
1959 ATOMICS_LIST="
1960     atomics_gcc
1961     atomics_suncc
1962     atomics_win32
1963 "
1964
1965 AUTODETECT_LIBS="
1966     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1967     $HWACCEL_AUTODETECT_LIBRARY_LIST
1968     $THREADS_LIST
1969 "
1970
1971 ARCH_LIST="
1972     aarch64
1973     alpha
1974     arm
1975     avr32
1976     avr32_ap
1977     avr32_uc
1978     bfin
1979     ia64
1980     m68k
1981     mips
1982     mips64
1983     parisc
1984     ppc
1985     ppc64
1986     s390
1987     sh4
1988     sparc
1989     sparc64
1990     tilegx
1991     tilepro
1992     tomi
1993     x86
1994     x86_32
1995     x86_64
1996 "
1997
1998 ARCH_EXT_LIST_ARM="
1999     armv5te
2000     armv6
2001     armv6t2
2002     armv8
2003     neon
2004     vfp
2005     vfpv3
2006     setend
2007 "
2008
2009 ARCH_EXT_LIST_MIPS="
2010     mipsfpu
2011     mips32r2
2012     mips32r5
2013     mips64r2
2014     mips32r6
2015     mips64r6
2016     mipsdsp
2017     mipsdspr2
2018     msa
2019     msa2
2020 "
2021
2022 ARCH_EXT_LIST_LOONGSON="
2023     loongson2
2024     loongson3
2025     mmi
2026 "
2027
2028 ARCH_EXT_LIST_X86_SIMD="
2029     aesni
2030     amd3dnow
2031     amd3dnowext
2032     avx
2033     avx2
2034     avx512
2035     fma3
2036     fma4
2037     mmx
2038     mmxext
2039     sse
2040     sse2
2041     sse3
2042     sse4
2043     sse42
2044     ssse3
2045     xop
2046 "
2047
2048 ARCH_EXT_LIST_PPC="
2049     altivec
2050     dcbzl
2051     ldbrx
2052     power8
2053     ppc4xx
2054     vsx
2055 "
2056
2057 ARCH_EXT_LIST_X86="
2058     $ARCH_EXT_LIST_X86_SIMD
2059     cpunop
2060     i686
2061 "
2062
2063 ARCH_EXT_LIST="
2064     $ARCH_EXT_LIST_ARM
2065     $ARCH_EXT_LIST_PPC
2066     $ARCH_EXT_LIST_X86
2067     $ARCH_EXT_LIST_MIPS
2068     $ARCH_EXT_LIST_LOONGSON
2069 "
2070
2071 ARCH_FEATURES="
2072     aligned_stack
2073     fast_64bit
2074     fast_clz
2075     fast_cmov
2076     local_aligned
2077     simd_align_16
2078     simd_align_32
2079     simd_align_64
2080 "
2081
2082 BUILTIN_LIST="
2083     atomic_cas_ptr
2084     machine_rw_barrier
2085     MemoryBarrier
2086     mm_empty
2087     rdtsc
2088     sem_timedwait
2089     sync_val_compare_and_swap
2090 "
2091 HAVE_LIST_CMDLINE="
2092     inline_asm
2093     symver
2094     x86asm
2095 "
2096
2097 HAVE_LIST_PUB="
2098     bigendian
2099     fast_unaligned
2100 "
2101
2102 HEADERS_LIST="
2103     arpa_inet_h
2104     asm_types_h
2105     cdio_paranoia_h
2106     cdio_paranoia_paranoia_h
2107     cuda_h
2108     dispatch_dispatch_h
2109     dev_bktr_ioctl_bt848_h
2110     dev_bktr_ioctl_meteor_h
2111     dev_ic_bt8xx_h
2112     dev_video_bktr_ioctl_bt848_h
2113     dev_video_meteor_ioctl_meteor_h
2114     direct_h
2115     dirent_h
2116     dxgidebug_h
2117     dxva_h
2118     ES2_gl_h
2119     gsm_h
2120     io_h
2121     linux_perf_event_h
2122     machine_ioctl_bt848_h
2123     machine_ioctl_meteor_h
2124     malloc_h
2125     opencv2_core_core_c_h
2126     OpenGL_gl3_h
2127     poll_h
2128     sys_param_h
2129     sys_resource_h
2130     sys_select_h
2131     sys_soundcard_h
2132     sys_time_h
2133     sys_un_h
2134     sys_videoio_h
2135     termios_h
2136     udplite_h
2137     unistd_h
2138     valgrind_valgrind_h
2139     windows_h
2140     winsock2_h
2141 "
2142
2143 INTRINSICS_LIST="
2144     intrinsics_neon
2145 "
2146
2147 COMPLEX_FUNCS="
2148     cabs
2149     cexp
2150 "
2151
2152 MATH_FUNCS="
2153     atanf
2154     atan2f
2155     cbrt
2156     cbrtf
2157     copysign
2158     cosf
2159     erf
2160     exp2
2161     exp2f
2162     expf
2163     hypot
2164     isfinite
2165     isinf
2166     isnan
2167     ldexpf
2168     llrint
2169     llrintf
2170     log2
2171     log2f
2172     log10f
2173     lrint
2174     lrintf
2175     powf
2176     rint
2177     round
2178     roundf
2179     sinf
2180     trunc
2181     truncf
2182 "
2183
2184 SYSTEM_FEATURES="
2185     dos_paths
2186     libc_msvcrt
2187     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2188     section_data_rel_ro
2189     threads
2190     uwp
2191     winrt
2192 "
2193
2194 SYSTEM_FUNCS="
2195     access
2196     aligned_malloc
2197     arc4random
2198     clock_gettime
2199     closesocket
2200     CommandLineToArgvW
2201     fcntl
2202     getaddrinfo
2203     gethrtime
2204     getopt
2205     GetModuleHandle
2206     GetProcessAffinityMask
2207     GetProcessMemoryInfo
2208     GetProcessTimes
2209     getrusage
2210     GetStdHandle
2211     GetSystemTimeAsFileTime
2212     gettimeofday
2213     glob
2214     glXGetProcAddress
2215     gmtime_r
2216     inet_aton
2217     isatty
2218     kbhit
2219     localtime_r
2220     lstat
2221     lzo1x_999_compress
2222     mach_absolute_time
2223     MapViewOfFile
2224     memalign
2225     mkstemp
2226     mmap
2227     mprotect
2228     nanosleep
2229     PeekNamedPipe
2230     posix_memalign
2231     pthread_cancel
2232     sched_getaffinity
2233     SecItemImport
2234     SetConsoleTextAttribute
2235     SetConsoleCtrlHandler
2236     SetDllDirectory
2237     setmode
2238     setrlimit
2239     Sleep
2240     strerror_r
2241     sysconf
2242     sysctl
2243     usleep
2244     UTGetOSTypeFromString
2245     VirtualAlloc
2246     wglGetProcAddress
2247 "
2248
2249 SYSTEM_LIBRARIES="
2250     bcrypt
2251     vaapi_drm
2252     vaapi_x11
2253     vdpau_x11
2254 "
2255
2256 TOOLCHAIN_FEATURES="
2257     as_arch_directive
2258     as_dn_directive
2259     as_fpu_directive
2260     as_func
2261     as_object_arch
2262     asm_mod_q
2263     blocks_extension
2264     ebp_available
2265     ebx_available
2266     gnu_as
2267     gnu_windres
2268     ibm_asm
2269     inline_asm_direct_symbol_refs
2270     inline_asm_labels
2271     inline_asm_nonlocal_labels
2272     pragma_deprecated
2273     rsync_contimeout
2274     symver_asm_label
2275     symver_gnu_asm
2276     vfp_args
2277     xform_asm
2278     xmm_clobbers
2279 "
2280
2281 TYPES_LIST="
2282     kCMVideoCodecType_HEVC
2283     kCVPixelFormatType_420YpCbCr10BiPlanarVideoRange
2284     kCVImageBufferTransferFunction_SMPTE_ST_2084_PQ
2285     kCVImageBufferTransferFunction_ITU_R_2100_HLG
2286     kCVImageBufferTransferFunction_Linear
2287     socklen_t
2288     struct_addrinfo
2289     struct_group_source_req
2290     struct_ip_mreq_source
2291     struct_ipv6_mreq
2292     struct_msghdr_msg_flags
2293     struct_pollfd
2294     struct_rusage_ru_maxrss
2295     struct_sctp_event_subscribe
2296     struct_sockaddr_in6
2297     struct_sockaddr_sa_len
2298     struct_sockaddr_storage
2299     struct_stat_st_mtim_tv_nsec
2300     struct_v4l2_frmivalenum_discrete
2301 "
2302
2303 HAVE_LIST="
2304     $ARCH_EXT_LIST
2305     $(add_suffix _external $ARCH_EXT_LIST)
2306     $(add_suffix _inline   $ARCH_EXT_LIST)
2307     $ARCH_FEATURES
2308     $BUILTIN_LIST
2309     $COMPLEX_FUNCS
2310     $HAVE_LIST_CMDLINE
2311     $HAVE_LIST_PUB
2312     $HEADERS_LIST
2313     $INTRINSICS_LIST
2314     $MATH_FUNCS
2315     $SYSTEM_FEATURES
2316     $SYSTEM_FUNCS
2317     $SYSTEM_LIBRARIES
2318     $THREADS_LIST
2319     $TOOLCHAIN_FEATURES
2320     $TYPES_LIST
2321     makeinfo
2322     makeinfo_html
2323     opencl_d3d11
2324     opencl_drm_arm
2325     opencl_drm_beignet
2326     opencl_dxva2
2327     opencl_vaapi_beignet
2328     opencl_vaapi_intel_media
2329     perl
2330     pod2man
2331     texi2html
2332 "
2333
2334 # options emitted with CONFIG_ prefix but not available on the command line
2335 CONFIG_EXTRA="
2336     aandcttables
2337     ac3dsp
2338     adts_header
2339     audio_frame_queue
2340     audiodsp
2341     blockdsp
2342     bswapdsp
2343     cabac
2344     cbs
2345     cbs_av1
2346     cbs_h264
2347     cbs_h265
2348     cbs_jpeg
2349     cbs_mpeg2
2350     cbs_vp9
2351     dirac_parse
2352     dnn
2353     dvprofile
2354     exif
2355     faandct
2356     faanidct
2357     fdctdsp
2358     flacdsp
2359     fmtconvert
2360     frame_thread_encoder
2361     g722dsp
2362     golomb
2363     gplv3
2364     h263dsp
2365     h264chroma
2366     h264dsp
2367     h264parse
2368     h264pred
2369     h264qpel
2370     hevcparse
2371     hpeldsp
2372     huffman
2373     huffyuvdsp
2374     huffyuvencdsp
2375     idctdsp
2376     iirfilter
2377     mdct15
2378     intrax8
2379     iso_media
2380     ividsp
2381     jpegtables
2382     lgplv3
2383     libx262
2384     llauddsp
2385     llviddsp
2386     llvidencdsp
2387     lpc
2388     lzf
2389     me_cmp
2390     mpeg_er
2391     mpegaudio
2392     mpegaudiodsp
2393     mpegaudioheader
2394     mpegvideo
2395     mpegvideoenc
2396     mss34dsp
2397     pixblockdsp
2398     qpeldsp
2399     qsv
2400     qsvdec
2401     qsvenc
2402     qsvvpp
2403     rangecoder
2404     riffdec
2405     riffenc
2406     rtpdec
2407     rtpenc_chain
2408     rv34dsp
2409     scene_sad
2410     sinewin
2411     snappy
2412     srtp
2413     startcode
2414     texturedsp
2415     texturedspenc
2416     tpeldsp
2417     vaapi_1
2418     vaapi_encode
2419     vc1dsp
2420     videodsp
2421     vp3dsp
2422     vp56dsp
2423     vp8dsp
2424     wma_freqs
2425     wmv2dsp
2426 "
2427
2428 CMDLINE_SELECT="
2429     $ARCH_EXT_LIST
2430     $CONFIG_LIST
2431     $HAVE_LIST_CMDLINE
2432     $THREADS_LIST
2433     asm
2434     cross_compile
2435     debug
2436     extra_warnings
2437     logging
2438     lto
2439     optimizations
2440     rpath
2441     stripping
2442 "
2443
2444 PATHS_LIST="
2445     bindir
2446     datadir
2447     docdir
2448     incdir
2449     libdir
2450     mandir
2451     pkgconfigdir
2452     prefix
2453     shlibdir
2454     install_name_dir
2455 "
2456
2457 CMDLINE_SET="
2458     $PATHS_LIST
2459     ar
2460     arch
2461     as
2462     assert_level
2463     build_suffix
2464     cc
2465     objcc
2466     cpu
2467     cross_prefix
2468     custom_allocator
2469     cxx
2470     dep_cc
2471     doxygen
2472     env
2473     extra_version
2474     gas
2475     host_cc
2476     host_cflags
2477     host_extralibs
2478     host_ld
2479     host_ldflags
2480     host_os
2481     ignore_tests
2482     install
2483     ld
2484     ln_s
2485     logfile
2486     malloc_prefix
2487     nm
2488     optflags
2489     nvcc
2490     nvccflags
2491     pkg_config
2492     pkg_config_flags
2493     progs_suffix
2494     random_seed
2495     ranlib
2496     samples
2497     strip
2498     sws_max_filter_size
2499     sysinclude
2500     sysroot
2501     target_exec
2502     target_os
2503     target_path
2504     target_samples
2505     tempprefix
2506     toolchain
2507     valgrind
2508     windres
2509     x86asmexe
2510 "
2511
2512 CMDLINE_APPEND="
2513     extra_cflags
2514     extra_cxxflags
2515     extra_objcflags
2516     host_cppflags
2517 "
2518
2519 # code dependency declarations
2520
2521 # architecture extensions
2522
2523 armv5te_deps="arm"
2524 armv6_deps="arm"
2525 armv6t2_deps="arm"
2526 armv8_deps="aarch64"
2527 neon_deps_any="aarch64 arm"
2528 intrinsics_neon_deps="neon"
2529 vfp_deps_any="aarch64 arm"
2530 vfpv3_deps="vfp"
2531 setend_deps="arm"
2532
2533 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2534
2535 altivec_deps="ppc"
2536 dcbzl_deps="ppc"
2537 ldbrx_deps="ppc"
2538 ppc4xx_deps="ppc"
2539 vsx_deps="altivec"
2540 power8_deps="vsx"
2541
2542 loongson2_deps="mips"
2543 loongson3_deps="mips"
2544 mips32r2_deps="mips"
2545 mips32r5_deps="mips"
2546 mips32r6_deps="mips"
2547 mips64r2_deps="mips"
2548 mips64r6_deps="mips"
2549 mipsfpu_deps="mips"
2550 mipsdsp_deps="mips"
2551 mipsdspr2_deps="mips"
2552 mmi_deps="mips"
2553 msa_deps="mipsfpu"
2554 msa2_deps="msa"
2555
2556 cpunop_deps="i686"
2557 x86_64_select="i686"
2558 x86_64_suggest="fast_cmov"
2559
2560 amd3dnow_deps="mmx"
2561 amd3dnowext_deps="amd3dnow"
2562 i686_deps="x86"
2563 mmx_deps="x86"
2564 mmxext_deps="mmx"
2565 sse_deps="mmxext"
2566 sse2_deps="sse"
2567 sse3_deps="sse2"
2568 ssse3_deps="sse3"
2569 sse4_deps="ssse3"
2570 sse42_deps="sse4"
2571 aesni_deps="sse42"
2572 avx_deps="sse42"
2573 xop_deps="avx"
2574 fma3_deps="avx"
2575 fma4_deps="avx"
2576 avx2_deps="avx"
2577 avx512_deps="avx2"
2578
2579 mmx_external_deps="x86asm"
2580 mmx_inline_deps="inline_asm x86"
2581 mmx_suggest="mmx_external mmx_inline"
2582
2583 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2584     eval dep=\$${ext}_deps
2585     eval ${ext}_external_deps='"${dep}_external"'
2586     eval ${ext}_inline_deps='"${dep}_inline"'
2587     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2588 done
2589
2590 aligned_stack_if_any="aarch64 ppc x86"
2591 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2592 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2593 fast_unaligned_if_any="aarch64 ppc x86"
2594 simd_align_16_if_any="altivec neon sse"
2595 simd_align_32_if_any="avx"
2596 simd_align_64_if_any="avx512"
2597
2598 # system capabilities
2599 linux_perf_deps="linux_perf_event_h"
2600 symver_if_any="symver_asm_label symver_gnu_asm"
2601 valgrind_backtrace_conflict="optimizations"
2602 valgrind_backtrace_deps="valgrind_valgrind_h"
2603
2604 # threading support
2605 atomics_gcc_if="sync_val_compare_and_swap"
2606 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2607 atomics_win32_if="MemoryBarrier"
2608 atomics_native_if_any="$ATOMICS_LIST"
2609 w32threads_deps="atomics_native"
2610 threads_if_any="$THREADS_LIST"
2611
2612 # subsystems
2613 cbs_av1_select="cbs"
2614 cbs_h264_select="cbs"
2615 cbs_h265_select="cbs"
2616 cbs_jpeg_select="cbs"
2617 cbs_mpeg2_select="cbs"
2618 cbs_vp9_select="cbs"
2619 dct_select="rdft"
2620 dirac_parse_select="golomb"
2621 dnn_suggest="libtensorflow"
2622 error_resilience_select="me_cmp"
2623 faandct_deps="faan"
2624 faandct_select="fdctdsp"
2625 faanidct_deps="faan"
2626 faanidct_select="idctdsp"
2627 h264dsp_select="startcode"
2628 hevcparse_select="golomb"
2629 frame_thread_encoder_deps="encoders threads"
2630 intrax8_select="blockdsp idctdsp"
2631 mdct_select="fft"
2632 mdct15_select="fft"
2633 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2634 mpeg_er_select="error_resilience"
2635 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2636 mpegaudiodsp_select="dct"
2637 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2638 mpegvideoenc_select="aandcttables me_cmp mpegvideo pixblockdsp qpeldsp"
2639 vc1dsp_select="h264chroma qpeldsp startcode"
2640 rdft_select="fft"
2641
2642 # decoders / encoders
2643 aac_decoder_select="adts_header mdct15 mdct sinewin"
2644 aac_fixed_decoder_select="adts_header mdct sinewin"
2645 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2646 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2647 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2648 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2649 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2650 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2651 acelp_kelvin_decoder_select="audiodsp"
2652 adpcm_g722_decoder_select="g722dsp"
2653 adpcm_g722_encoder_select="g722dsp"
2654 aic_decoder_select="golomb idctdsp"
2655 alac_encoder_select="lpc"
2656 als_decoder_select="bswapdsp"
2657 amrnb_decoder_select="lsp"
2658 amrwb_decoder_select="lsp"
2659 amv_decoder_select="sp5x_decoder exif"
2660 amv_encoder_select="jpegtables mpegvideoenc"
2661 ape_decoder_select="bswapdsp llauddsp"
2662 apng_decoder_deps="zlib"
2663 apng_encoder_deps="zlib"
2664 apng_encoder_select="llvidencdsp"
2665 aptx_decoder_select="audio_frame_queue"
2666 aptx_encoder_select="audio_frame_queue"
2667 aptx_hd_decoder_select="audio_frame_queue"
2668 aptx_hd_encoder_select="audio_frame_queue"
2669 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2670 asv1_encoder_select="aandcttables bswapdsp fdctdsp pixblockdsp"
2671 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2672 asv2_encoder_select="aandcttables bswapdsp fdctdsp pixblockdsp"
2673 atrac1_decoder_select="mdct sinewin"
2674 atrac3_decoder_select="mdct"
2675 atrac3al_decoder_select="mdct"
2676 atrac3p_decoder_select="mdct sinewin"
2677 atrac3pal_decoder_select="mdct sinewin"
2678 atrac9_decoder_select="mdct"
2679 avrn_decoder_select="exif jpegtables"
2680 bink_decoder_select="blockdsp hpeldsp"
2681 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2682 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2683 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2684 clearvideo_decoder_select="idctdsp"
2685 cllc_decoder_select="bswapdsp"
2686 comfortnoise_encoder_select="lpc"
2687 cook_decoder_select="audiodsp mdct sinewin"
2688 cscd_decoder_select="lzo"
2689 cscd_decoder_suggest="zlib"
2690 dca_decoder_select="mdct"
2691 dca_encoder_select="mdct"
2692 dds_decoder_select="texturedsp"
2693 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2694 dnxhd_decoder_select="blockdsp idctdsp"
2695 dnxhd_encoder_select="blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2696 dolby_e_decoder_select="mdct"
2697 dvvideo_decoder_select="dvprofile idctdsp"
2698 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2699 dxa_decoder_deps="zlib"
2700 dxv_decoder_select="lzf texturedsp"
2701 eac3_decoder_select="ac3_decoder"
2702 eac3_encoder_select="ac3_encoder"
2703 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2704 eatgq_decoder_select="aandcttables"
2705 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2706 exr_decoder_deps="zlib"
2707 ffv1_decoder_select="rangecoder"
2708 ffv1_encoder_select="rangecoder"
2709 ffvhuff_decoder_select="huffyuv_decoder"
2710 ffvhuff_encoder_select="huffyuv_encoder"
2711 fic_decoder_select="golomb"
2712 flac_decoder_select="flacdsp"
2713 flac_encoder_select="bswapdsp flacdsp lpc"
2714 flashsv2_decoder_deps="zlib"
2715 flashsv2_encoder_deps="zlib"
2716 flashsv_decoder_deps="zlib"
2717 flashsv_encoder_deps="zlib"
2718 flv_decoder_select="h263_decoder"
2719 flv_encoder_select="h263_encoder"
2720 fourxm_decoder_select="blockdsp bswapdsp"
2721 fraps_decoder_select="bswapdsp huffman"
2722 g2m_decoder_deps="zlib"
2723 g2m_decoder_select="blockdsp idctdsp jpegtables"
2724 g729_decoder_select="audiodsp"
2725 h261_decoder_select="mpegvideo"
2726 h261_encoder_select="mpegvideoenc"
2727 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2728 h263_encoder_select="h263dsp mpegvideoenc"
2729 h263i_decoder_select="h263_decoder"
2730 h263p_decoder_select="h263_decoder"
2731 h263p_encoder_select="h263_encoder"
2732 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2733 h264_decoder_suggest="error_resilience"
2734 hap_decoder_select="snappy texturedsp"
2735 hap_encoder_deps="libsnappy"
2736 hap_encoder_select="texturedspenc"
2737 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2738 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2739 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2740 hymt_decoder_select="huffyuv_decoder"
2741 iac_decoder_select="imc_decoder"
2742 imc_decoder_select="bswapdsp fft mdct sinewin"
2743 imm4_decoder_select="bswapdsp"
2744 imm5_decoder_select="h264_decoder hevc_decoder"
2745 indeo3_decoder_select="hpeldsp"
2746 indeo4_decoder_select="ividsp"
2747 indeo5_decoder_select="ividsp"
2748 interplay_video_decoder_select="hpeldsp"
2749 jpegls_decoder_select="mjpeg_decoder"
2750 jv_decoder_select="blockdsp"
2751 lagarith_decoder_select="llviddsp"
2752 ljpeg_encoder_select="idctdsp jpegtables mpegvideoenc"
2753 lscr_decoder_deps="zlib"
2754 magicyuv_decoder_select="llviddsp"
2755 magicyuv_encoder_select="llvidencdsp"
2756 mdec_decoder_select="blockdsp bswapdsp idctdsp mpegvideo"
2757 metasound_decoder_select="lsp mdct sinewin"
2758 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2759 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2760 mjpeg_encoder_select="jpegtables mpegvideoenc"
2761 mjpegb_decoder_select="mjpeg_decoder"
2762 mlp_decoder_select="mlp_parser"
2763 mlp_encoder_select="lpc audio_frame_queue"
2764 motionpixels_decoder_select="bswapdsp"
2765 mp1_decoder_select="mpegaudio"
2766 mp1float_decoder_select="mpegaudio"
2767 mp2_decoder_select="mpegaudio"
2768 mp2float_decoder_select="mpegaudio"
2769 mp3_decoder_select="mpegaudio"
2770 mp3adu_decoder_select="mpegaudio"
2771 mp3adufloat_decoder_select="mpegaudio"
2772 mp3float_decoder_select="mpegaudio"
2773 mp3on4_decoder_select="mpegaudio"
2774 mp3on4float_decoder_select="mpegaudio"
2775 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2776 mpc8_decoder_select="mpegaudiodsp"
2777 mpegvideo_decoder_select="mpegvideo"
2778 mpeg1video_decoder_select="mpegvideo"
2779 mpeg1video_encoder_select="mpegvideoenc h263dsp"
2780 mpeg2video_decoder_select="mpegvideo"
2781 mpeg2video_encoder_select="mpegvideoenc h263dsp"
2782 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2783 mpeg4_encoder_select="h263_encoder"
2784 msa1_decoder_select="mss34dsp"
2785 mscc_decoder_deps="zlib"
2786 msmpeg4v1_decoder_select="h263_decoder"
2787 msmpeg4v2_decoder_select="h263_decoder"
2788 msmpeg4v2_encoder_select="h263_encoder"
2789 msmpeg4v3_decoder_select="h263_decoder"
2790 msmpeg4v3_encoder_select="h263_encoder"
2791 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2792 mts2_decoder_select="mss34dsp"
2793 mv30_decoder_select="aandcttables blockdsp"
2794 mvha_decoder_deps="zlib"
2795 mvha_decoder_select="llviddsp"
2796 mwsc_decoder_deps="zlib"
2797 mxpeg_decoder_select="mjpeg_decoder"
2798 nellymoser_decoder_select="mdct sinewin"
2799 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2800 nuv_decoder_select="idctdsp lzo"
2801 on2avc_decoder_select="mdct"
2802 opus_decoder_deps="swresample"
2803 opus_decoder_select="mdct15"
2804 opus_encoder_select="audio_frame_queue mdct15"
2805 png_decoder_deps="zlib"
2806 png_encoder_deps="zlib"
2807 png_encoder_select="llvidencdsp"
2808 prores_decoder_select="blockdsp idctdsp"
2809 prores_encoder_select="fdctdsp"
2810 qcelp_decoder_select="lsp"
2811 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2812 ra_144_decoder_select="audiodsp"
2813 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2814 ralf_decoder_select="golomb"
2815 rasc_decoder_deps="zlib"
2816 rawvideo_decoder_select="bswapdsp"
2817 rscc_decoder_deps="zlib"
2818 rtjpeg_decoder_select="me_cmp"
2819 rv10_decoder_select="h263_decoder"
2820 rv10_encoder_select="h263_encoder"
2821 rv20_decoder_select="h263_decoder"
2822 rv20_encoder_select="h263_encoder"
2823 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2824 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2825 screenpresso_decoder_deps="zlib"
2826 shorten_decoder_select="bswapdsp"
2827 sipr_decoder_select="lsp"
2828 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2829 snow_encoder_select="dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2830 sonic_decoder_select="golomb rangecoder"
2831 sonic_encoder_select="golomb rangecoder"
2832 sonic_ls_encoder_select="golomb rangecoder"
2833 sp5x_decoder_select="mjpeg_decoder"
2834 speedhq_decoder_select="mpegvideo"
2835 srgc_decoder_deps="zlib"
2836 svq1_decoder_select="hpeldsp"
2837 svq1_encoder_select="hpeldsp me_cmp mpegvideoenc"
2838 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2839 svq3_decoder_suggest="zlib"
2840 tak_decoder_select="audiodsp"
2841 tdsc_decoder_deps="zlib"
2842 tdsc_decoder_select="mjpeg_decoder"
2843 theora_decoder_select="vp3_decoder"
2844 thp_decoder_select="mjpeg_decoder"
2845 tiff_decoder_select="mjpeg_decoder"
2846 tiff_decoder_suggest="zlib lzma"
2847 tiff_encoder_suggest="zlib"
2848 truehd_decoder_select="mlp_parser"
2849 truehd_encoder_select="lpc audio_frame_queue"
2850 truemotion2_decoder_select="bswapdsp"
2851 truespeech_decoder_select="bswapdsp"
2852 tscc_decoder_deps="zlib"
2853 twinvq_decoder_select="mdct lsp sinewin"
2854 txd_decoder_select="texturedsp"
2855 utvideo_decoder_select="bswapdsp llviddsp"
2856 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2857 vble_decoder_select="llviddsp"
2858 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2859 vc1image_decoder_select="vc1_decoder"
2860 vorbis_decoder_select="mdct"
2861 vorbis_encoder_select="audio_frame_queue mdct"
2862 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2863 vp4_decoder_select="vp3_decoder"
2864 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2865 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2866 vp6a_decoder_select="vp6_decoder"
2867 vp6f_decoder_select="vp6_decoder"
2868 vp7_decoder_select="h264pred videodsp vp8dsp"
2869 vp8_decoder_select="h264pred videodsp vp8dsp"
2870 vp9_decoder_select="videodsp vp9_parser vp9_superframe_split_bsf"
2871 wcmv_decoder_deps="zlib"
2872 webp_decoder_select="vp8_decoder exif"
2873 wmalossless_decoder_select="llauddsp"
2874 wmapro_decoder_select="mdct sinewin wma_freqs"
2875 wmav1_decoder_select="mdct sinewin wma_freqs"
2876 wmav1_encoder_select="mdct sinewin wma_freqs"
2877 wmav2_decoder_select="mdct sinewin wma_freqs"
2878 wmav2_encoder_select="mdct sinewin wma_freqs"
2879 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2880 wmv1_decoder_select="h263_decoder"
2881 wmv1_encoder_select="h263_encoder"
2882 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2883 wmv2_encoder_select="h263_encoder wmv2dsp"
2884 wmv3_decoder_select="vc1_decoder"
2885 wmv3image_decoder_select="wmv3_decoder"
2886 xma1_decoder_select="wmapro_decoder"
2887 xma2_decoder_select="wmapro_decoder"
2888 ylc_decoder_select="bswapdsp"
2889 zerocodec_decoder_deps="zlib"
2890 zlib_decoder_deps="zlib"
2891 zlib_encoder_deps="zlib"
2892 zmbv_decoder_deps="zlib"
2893 zmbv_encoder_deps="zlib"
2894
2895 # hardware accelerators
2896 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2897 cuda_deps="ffnvcodec"
2898 cuvid_deps="ffnvcodec"
2899 d3d11va_deps="dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2900 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2901 ffnvcodec_deps_any="libdl LoadLibrary"
2902 nvdec_deps="ffnvcodec"
2903 vaapi_x11_deps="xlib"
2904 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2905 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2906 xvmc_deps="X11_extensions_XvMClib_h"
2907
2908 h263_vaapi_hwaccel_deps="vaapi"
2909 h263_vaapi_hwaccel_select="h263_decoder"
2910 h263_videotoolbox_hwaccel_deps="videotoolbox"
2911 h263_videotoolbox_hwaccel_select="h263_decoder"
2912 h264_d3d11va_hwaccel_deps="d3d11va"
2913 h264_d3d11va_hwaccel_select="h264_decoder"
2914 h264_d3d11va2_hwaccel_deps="d3d11va"
2915 h264_d3d11va2_hwaccel_select="h264_decoder"
2916 h264_dxva2_hwaccel_deps="dxva2"
2917 h264_dxva2_hwaccel_select="h264_decoder"
2918 h264_nvdec_hwaccel_deps="nvdec"
2919 h264_nvdec_hwaccel_select="h264_decoder"
2920 h264_vaapi_hwaccel_deps="vaapi"
2921 h264_vaapi_hwaccel_select="h264_decoder"
2922 h264_vdpau_hwaccel_deps="vdpau"
2923 h264_vdpau_hwaccel_select="h264_decoder"
2924 h264_videotoolbox_hwaccel_deps="videotoolbox"
2925 h264_videotoolbox_hwaccel_select="h264_decoder"
2926 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2927 hevc_d3d11va_hwaccel_select="hevc_decoder"
2928 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2929 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2930 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2931 hevc_dxva2_hwaccel_select="hevc_decoder"
2932 hevc_nvdec_hwaccel_deps="nvdec"
2933 hevc_nvdec_hwaccel_select="hevc_decoder"
2934 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2935 hevc_vaapi_hwaccel_select="hevc_decoder"
2936 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2937 hevc_vdpau_hwaccel_select="hevc_decoder"
2938 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2939 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2940 mjpeg_nvdec_hwaccel_deps="nvdec"
2941 mjpeg_nvdec_hwaccel_select="mjpeg_decoder"
2942 mjpeg_vaapi_hwaccel_deps="vaapi"
2943 mjpeg_vaapi_hwaccel_select="mjpeg_decoder"
2944 mpeg_xvmc_hwaccel_deps="xvmc"
2945 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2946 mpeg1_nvdec_hwaccel_deps="nvdec"
2947 mpeg1_nvdec_hwaccel_select="mpeg1video_decoder"
2948 mpeg1_vdpau_hwaccel_deps="vdpau"
2949 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2950 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2951 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2952 mpeg1_xvmc_hwaccel_deps="xvmc"
2953 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2954 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2955 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2956 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2957 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2958 mpeg2_dxva2_hwaccel_deps="dxva2"
2959 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2960 mpeg2_nvdec_hwaccel_deps="nvdec"
2961 mpeg2_nvdec_hwaccel_select="mpeg2video_decoder"
2962 mpeg2_vaapi_hwaccel_deps="vaapi"
2963 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2964 mpeg2_vdpau_hwaccel_deps="vdpau"
2965 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2966 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2967 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2968 mpeg2_xvmc_hwaccel_deps="xvmc"
2969 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2970 mpeg4_nvdec_hwaccel_deps="nvdec"
2971 mpeg4_nvdec_hwaccel_select="mpeg4_decoder"
2972 mpeg4_vaapi_hwaccel_deps="vaapi"
2973 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2974 mpeg4_vdpau_hwaccel_deps="vdpau"
2975 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2976 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2977 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2978 vc1_d3d11va_hwaccel_deps="d3d11va"
2979 vc1_d3d11va_hwaccel_select="vc1_decoder"
2980 vc1_d3d11va2_hwaccel_deps="d3d11va"
2981 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2982 vc1_dxva2_hwaccel_deps="dxva2"
2983 vc1_dxva2_hwaccel_select="vc1_decoder"
2984 vc1_nvdec_hwaccel_deps="nvdec"
2985 vc1_nvdec_hwaccel_select="vc1_decoder"
2986 vc1_vaapi_hwaccel_deps="vaapi"
2987 vc1_vaapi_hwaccel_select="vc1_decoder"
2988 vc1_vdpau_hwaccel_deps="vdpau"
2989 vc1_vdpau_hwaccel_select="vc1_decoder"
2990 vp8_nvdec_hwaccel_deps="nvdec"
2991 vp8_nvdec_hwaccel_select="vp8_decoder"
2992 vp8_vaapi_hwaccel_deps="vaapi"
2993 vp8_vaapi_hwaccel_select="vp8_decoder"
2994 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2995 vp9_d3d11va_hwaccel_select="vp9_decoder"
2996 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2997 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2998 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2999 vp9_dxva2_hwaccel_select="vp9_decoder"
3000 vp9_nvdec_hwaccel_deps="nvdec"
3001 vp9_nvdec_hwaccel_select="vp9_decoder"
3002 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
3003 vp9_vaapi_hwaccel_select="vp9_decoder"
3004 vp9_vdpau_hwaccel_deps="vdpau VdpPictureInfoVP9"
3005 vp9_vdpau_hwaccel_select="vp9_decoder"
3006 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
3007 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
3008 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
3009 wmv3_nvdec_hwaccel_select="vc1_nvdec_hwaccel"
3010 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
3011 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
3012
3013 # hardware-accelerated codecs
3014 omx_deps="libdl pthreads"
3015 omx_rpi_select="omx"
3016 qsv_deps="libmfx"
3017 qsvdec_select="qsv"
3018 qsvenc_select="qsv"
3019 qsvvpp_select="qsv"
3020 vaapi_encode_deps="vaapi"
3021 v4l2_m2m_deps="linux_videodev2_h sem_timedwait"
3022
3023 hwupload_cuda_filter_deps="ffnvcodec"
3024 scale_npp_filter_deps="ffnvcodec libnpp"
3025 scale_cuda_filter_deps="ffnvcodec"
3026 scale_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3027 thumbnail_cuda_filter_deps="ffnvcodec"
3028 thumbnail_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3029 transpose_npp_filter_deps="ffnvcodec libnpp"
3030 overlay_cuda_filter_deps="ffnvcodec"
3031 overlay_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3032
3033 amf_deps_any="libdl LoadLibrary"
3034 nvenc_deps="ffnvcodec"
3035 nvenc_deps_any="libdl LoadLibrary"
3036 nvenc_encoder_deps="nvenc"
3037
3038 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
3039 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
3040 h264_amf_encoder_deps="amf"
3041 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
3042 h264_cuvid_decoder_deps="cuvid"
3043 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
3044 h264_mediacodec_decoder_deps="mediacodec"
3045 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
3046 h264_mmal_decoder_deps="mmal"
3047 h264_nvenc_encoder_deps="nvenc"
3048 h264_omx_encoder_deps="omx"
3049 h264_qsv_decoder_select="h264_mp4toannexb_bsf qsvdec"
3050 h264_qsv_encoder_select="qsvenc"
3051 h264_rkmpp_decoder_deps="rkmpp"
3052 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
3053 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
3054 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
3055 h264_v4l2m2m_decoder_select="h264_mp4toannexb_bsf"
3056 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
3057 hevc_amf_encoder_deps="amf"
3058 hevc_cuvid_decoder_deps="cuvid"
3059 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
3060 hevc_mediacodec_decoder_deps="mediacodec"
3061 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
3062 hevc_nvenc_encoder_deps="nvenc"
3063 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf qsvdec"
3064 hevc_qsv_encoder_select="hevcparse qsvenc"
3065 hevc_rkmpp_decoder_deps="rkmpp"
3066 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
3067 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
3068 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
3069 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
3070 hevc_v4l2m2m_decoder_select="hevc_mp4toannexb_bsf"
3071 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
3072 mjpeg_cuvid_decoder_deps="cuvid"
3073 mjpeg_qsv_decoder_select="qsvdec"
3074 mjpeg_qsv_encoder_deps="libmfx"
3075 mjpeg_qsv_encoder_select="qsvenc"
3076 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
3077 mjpeg_vaapi_encoder_select="cbs_jpeg jpegtables vaapi_encode"
3078 mpeg1_cuvid_decoder_deps="cuvid"
3079 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
3080 mpeg2_crystalhd_decoder_select="crystalhd"
3081 mpeg2_cuvid_decoder_deps="cuvid"
3082 mpeg2_mmal_decoder_deps="mmal"
3083 mpeg2_mediacodec_decoder_deps="mediacodec"
3084 mpeg2_qsv_decoder_select="qsvdec"
3085 mpeg2_qsv_encoder_select="qsvenc"
3086 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
3087 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
3088 mpeg4_crystalhd_decoder_select="crystalhd"
3089 mpeg4_cuvid_decoder_deps="cuvid"
3090 mpeg4_mediacodec_decoder_deps="mediacodec"
3091 mpeg4_mmal_decoder_deps="mmal"
3092 mpeg4_omx_encoder_deps="omx"
3093 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
3094 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
3095 msmpeg4_crystalhd_decoder_select="crystalhd"
3096 nvenc_h264_encoder_select="h264_nvenc_encoder"
3097 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
3098 vc1_crystalhd_decoder_select="crystalhd"
3099 vc1_cuvid_decoder_deps="cuvid"
3100 vc1_mmal_decoder_deps="mmal"
3101 vc1_qsv_decoder_select="qsvdec"
3102 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
3103 vp8_cuvid_decoder_deps="cuvid"
3104 vp8_mediacodec_decoder_deps="mediacodec"
3105 vp8_qsv_decoder_select="qsvdec"
3106 vp8_rkmpp_decoder_deps="rkmpp"
3107 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
3108 vp8_vaapi_encoder_select="vaapi_encode"
3109 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
3110 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
3111 vp9_cuvid_decoder_deps="cuvid"
3112 vp9_mediacodec_decoder_deps="mediacodec"
3113 vp9_qsv_decoder_select="qsvdec"
3114 vp9_rkmpp_decoder_deps="rkmpp"
3115 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
3116 vp9_vaapi_encoder_select="vaapi_encode"
3117 vp9_qsv_encoder_deps="libmfx MFX_CODEC_VP9"
3118 vp9_qsv_encoder_select="qsvenc"
3119 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
3120 wmv3_crystalhd_decoder_select="crystalhd"
3121
3122 # parsers
3123 aac_parser_select="adts_header"
3124 av1_parser_select="cbs_av1"
3125 h264_parser_select="golomb h264dsp h264parse"
3126 hevc_parser_select="hevcparse"
3127 mpegaudio_parser_select="mpegaudioheader"
3128 mpegvideo_parser_select="mpegvideo"
3129 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
3130 vc1_parser_select="vc1dsp"
3131
3132 # bitstream_filters
3133 aac_adtstoasc_bsf_select="adts_header"
3134 av1_frame_merge_bsf_select="cbs_av1"
3135 av1_frame_split_bsf_select="cbs_av1"
3136 av1_metadata_bsf_select="cbs_av1"
3137 eac3_core_bsf_select="ac3_parser"
3138 filter_units_bsf_select="cbs"
3139 h264_metadata_bsf_deps="const_nan"
3140 h264_metadata_bsf_select="cbs_h264"
3141 h264_redundant_pps_bsf_select="cbs_h264"
3142 hevc_metadata_bsf_select="cbs_h265"
3143 mjpeg2jpeg_bsf_select="jpegtables"
3144 mpeg2_metadata_bsf_select="cbs_mpeg2"
3145 trace_headers_bsf_select="cbs"
3146 vp9_metadata_bsf_select="cbs_vp9"
3147
3148 # external libraries
3149 aac_at_decoder_deps="audiotoolbox"
3150 aac_at_decoder_select="aac_adtstoasc_bsf"
3151 ac3_at_decoder_deps="audiotoolbox"
3152 ac3_at_decoder_select="ac3_parser"
3153 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
3154 alac_at_decoder_deps="audiotoolbox"
3155 amr_nb_at_decoder_deps="audiotoolbox"
3156 avisynth_deps_any="libdl LoadLibrary"
3157 avisynth_demuxer_deps="avisynth"
3158 avisynth_demuxer_select="riffdec"
3159 eac3_at_decoder_deps="audiotoolbox"
3160 eac3_at_decoder_select="ac3_parser"
3161 gsm_ms_at_decoder_deps="audiotoolbox"
3162 ilbc_at_decoder_deps="audiotoolbox"
3163 mp1_at_decoder_deps="audiotoolbox"
3164 mp2_at_decoder_deps="audiotoolbox"
3165 mp3_at_decoder_deps="audiotoolbox"
3166 mp1_at_decoder_select="mpegaudioheader"
3167 mp2_at_decoder_select="mpegaudioheader"
3168 mp3_at_decoder_select="mpegaudioheader"
3169 pcm_alaw_at_decoder_deps="audiotoolbox"
3170 pcm_mulaw_at_decoder_deps="audiotoolbox"
3171 qdmc_decoder_select="fft"
3172 qdmc_at_decoder_deps="audiotoolbox"
3173 qdm2_at_decoder_deps="audiotoolbox"
3174 aac_at_encoder_deps="audiotoolbox"
3175 aac_at_encoder_select="audio_frame_queue"
3176 alac_at_encoder_deps="audiotoolbox"
3177 alac_at_encoder_select="audio_frame_queue"
3178 ilbc_at_encoder_deps="audiotoolbox"
3179 ilbc_at_encoder_select="audio_frame_queue"
3180 pcm_alaw_at_encoder_deps="audiotoolbox"
3181 pcm_alaw_at_encoder_select="audio_frame_queue"
3182 pcm_mulaw_at_encoder_deps="audiotoolbox"
3183 pcm_mulaw_at_encoder_select="audio_frame_queue"
3184 chromaprint_muxer_deps="chromaprint"
3185 h264_videotoolbox_encoder_deps="pthreads"
3186 h264_videotoolbox_encoder_select="videotoolbox_encoder"
3187 hevc_videotoolbox_encoder_deps="pthreads"
3188 hevc_videotoolbox_encoder_select="videotoolbox_encoder"
3189 libaom_av1_decoder_deps="libaom"
3190 libaom_av1_encoder_deps="libaom"
3191 libaom_av1_encoder_select="extract_extradata_bsf"
3192 libaribb24_decoder_deps="libaribb24"
3193 libcelt_decoder_deps="libcelt"
3194 libcodec2_decoder_deps="libcodec2"
3195 libcodec2_encoder_deps="libcodec2"
3196 libdav1d_decoder_deps="libdav1d"
3197 libdavs2_decoder_deps="libdavs2"
3198 libfdk_aac_decoder_deps="libfdk_aac"
3199 libfdk_aac_encoder_deps="libfdk_aac"
3200 libfdk_aac_encoder_select="audio_frame_queue"
3201 libgme_demuxer_deps="libgme"
3202 libgsm_decoder_deps="libgsm"
3203 libgsm_encoder_deps="libgsm"
3204 libgsm_ms_decoder_deps="libgsm"
3205 libgsm_ms_encoder_deps="libgsm"
3206 libilbc_decoder_deps="libilbc"
3207 libilbc_encoder_deps="libilbc"
3208 libkvazaar_encoder_deps="libkvazaar"
3209 libmodplug_demuxer_deps="libmodplug"
3210 libmp3lame_encoder_deps="libmp3lame"
3211 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
3212 libopencore_amrnb_decoder_deps="libopencore_amrnb"
3213 libopencore_amrnb_encoder_deps="libopencore_amrnb"
3214 libopencore_amrnb_encoder_select="audio_frame_queue"
3215 libopencore_amrwb_decoder_deps="libopencore_amrwb"
3216 libopenh264_decoder_deps="libopenh264"
3217 libopenh264_decoder_select="h264_mp4toannexb_bsf"
3218 libopenh264_encoder_deps="libopenh264"
3219 libopenjpeg_decoder_deps="libopenjpeg"
3220 libopenjpeg_encoder_deps="libopenjpeg"
3221 libopenmpt_demuxer_deps="libopenmpt"
3222 libopus_decoder_deps="libopus"
3223 libopus_encoder_deps="libopus"
3224 libopus_encoder_select="audio_frame_queue"
3225 librav1e_encoder_deps="librav1e"
3226 librav1e_encoder_select="extract_extradata_bsf"
3227 librsvg_decoder_deps="librsvg"
3228 libshine_encoder_deps="libshine"
3229 libshine_encoder_select="audio_frame_queue"
3230 libspeex_decoder_deps="libspeex"
3231 libspeex_encoder_deps="libspeex"
3232 libspeex_encoder_select="audio_frame_queue"
3233 libtheora_encoder_deps="libtheora"
3234 libtwolame_encoder_deps="libtwolame"
3235 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
3236 libvorbis_decoder_deps="libvorbis"
3237 libvorbis_encoder_deps="libvorbis libvorbisenc"
3238 libvorbis_encoder_select="audio_frame_queue"
3239 libvpx_vp8_decoder_deps="libvpx"
3240 libvpx_vp8_encoder_deps="libvpx"
3241 libvpx_vp9_decoder_deps="libvpx"
3242 libvpx_vp9_encoder_deps="libvpx"
3243 libwavpack_encoder_deps="libwavpack"
3244 libwavpack_encoder_select="audio_frame_queue"
3245 libwebp_encoder_deps="libwebp"
3246 libwebp_anim_encoder_deps="libwebp"
3247 libx262_encoder_deps="libx262"
3248 libx264_encoder_deps="libx264"
3249 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
3250 libx264rgb_encoder_select="libx264_encoder"
3251 libx265_encoder_deps="libx265"
3252 libxavs_encoder_deps="libxavs"
3253 libxavs2_encoder_deps="libxavs2"
3254 libxvid_encoder_deps="libxvid"
3255 libzvbi_teletext_decoder_deps="libzvbi"
3256 vapoursynth_demuxer_deps="vapoursynth"
3257 videotoolbox_suggest="coreservices"
3258 videotoolbox_deps="corefoundation coremedia corevideo"
3259 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
3260
3261 # demuxers / muxers
3262 ac3_demuxer_select="ac3_parser"
3263 act_demuxer_select="riffdec"
3264 aiff_muxer_select="iso_media"
3265 asf_demuxer_select="riffdec"
3266 asf_o_demuxer_select="riffdec"
3267 asf_muxer_select="riffenc"
3268 asf_stream_muxer_select="asf_muxer"
3269 av1_demuxer_select="av1_frame_merge_bsf av1_parser"
3270 avi_demuxer_select="iso_media riffdec exif"
3271 avi_muxer_select="riffenc"
3272 caf_demuxer_select="iso_media riffdec"
3273 caf_muxer_select="iso_media"
3274 dash_muxer_select="mp4_muxer"
3275 dash_demuxer_deps="libxml2"
3276 dirac_demuxer_select="dirac_parser"
3277 dts_demuxer_select="dca_parser"
3278 dtshd_demuxer_select="dca_parser"
3279 dv_demuxer_select="dvprofile"
3280 dv_muxer_select="dvprofile"
3281 dxa_demuxer_select="riffdec"
3282 eac3_demuxer_select="ac3_parser"
3283 f4v_muxer_select="mov_muxer"
3284 fifo_muxer_deps="threads"
3285 flac_demuxer_select="flac_parser"
3286 flv_muxer_select="aac_adtstoasc_bsf"
3287 gxf_muxer_select="pcm_rechunk_bsf"
3288 hds_muxer_select="flv_muxer"
3289 hls_muxer_select="mpegts_muxer"
3290 hls_muxer_suggest="gcrypt openssl"
3291 image2_alias_pix_demuxer_select="image2_demuxer"
3292 image2_brender_pix_demuxer_select="image2_demuxer"
3293 ipod_muxer_select="mov_muxer"
3294 ismv_muxer_select="mov_muxer"
3295 ivf_muxer_select="av1_metadata_bsf vp9_superframe_bsf"
3296 latm_muxer_select="aac_adtstoasc_bsf"
3297 matroska_audio_muxer_select="matroska_muxer"
3298 matroska_demuxer_select="iso_media riffdec"
3299 matroska_demuxer_suggest="bzlib lzo zlib"
3300 matroska_muxer_select="iso_media riffenc vp9_superframe_bsf aac_adtstoasc_bsf"
3301 mlp_demuxer_select="mlp_parser"
3302 mmf_muxer_select="riffenc"
3303 mov_demuxer_select="iso_media riffdec"
3304 mov_demuxer_suggest="zlib"
3305 mov_muxer_select="iso_media riffenc rtpenc_chain vp9_superframe_bsf aac_adtstoasc_bsf"
3306 mp3_demuxer_select="mpegaudio_parser"
3307 mp3_muxer_select="mpegaudioheader"
3308 mp4_muxer_select="mov_muxer"
3309 mpegts_demuxer_select="iso_media"
3310 mpegts_muxer_select="adts_muxer latm_muxer h264_mp4toannexb_bsf hevc_mp4toannexb_bsf"
3311 mpegtsraw_demuxer_select="mpegts_demuxer"
3312 mxf_muxer_select="golomb pcm_rechunk_bsf"
3313 mxf_d10_muxer_select="mxf_muxer"
3314 mxf_opatom_muxer_select="mxf_muxer"
3315 nut_muxer_select="riffenc"
3316 nuv_demuxer_select="riffdec"
3317 oga_muxer_select="ogg_muxer"
3318 ogg_demuxer_select="dirac_parse"
3319 ogv_muxer_select="ogg_muxer"
3320 opus_muxer_select="ogg_muxer"
3321 psp_muxer_select="mov_muxer"
3322 rtp_demuxer_select="sdp_demuxer"
3323 rtp_muxer_select="golomb jpegtables"
3324 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3325 rtsp_demuxer_select="http_protocol rtpdec"
3326 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3327 sap_demuxer_select="sdp_demuxer"
3328 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3329 sdp_demuxer_select="rtpdec"
3330 smoothstreaming_muxer_select="ismv_muxer"
3331 spdif_demuxer_select="adts_header"
3332 spdif_muxer_select="adts_header"
3333 spx_muxer_select="ogg_muxer"
3334 swf_demuxer_suggest="zlib"
3335 tak_demuxer_select="tak_parser"
3336 truehd_demuxer_select="mlp_parser"
3337 tg2_muxer_select="mov_muxer"
3338 tgp_muxer_select="mov_muxer"
3339 vobsub_demuxer_select="mpegps_demuxer"
3340 w64_demuxer_select="wav_demuxer"
3341 w64_muxer_select="wav_muxer"
3342 wav_demuxer_select="riffdec"
3343 wav_muxer_select="riffenc"
3344 webm_chunk_muxer_select="webm_muxer"
3345 webm_muxer_select="iso_media riffenc"
3346 webm_dash_manifest_demuxer_select="matroska_demuxer"
3347 wtv_demuxer_select="mpegts_demuxer riffdec"
3348 wtv_muxer_select="mpegts_muxer riffenc"
3349 xmv_demuxer_select="riffdec"
3350 xwma_demuxer_select="riffdec"
3351
3352 # indevs / outdevs
3353 android_camera_indev_deps="android camera2ndk mediandk pthreads"
3354 android_camera_indev_extralibs="-landroid -lcamera2ndk -lmediandk"
3355 alsa_indev_deps="alsa"
3356 alsa_outdev_deps="alsa"
3357 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3358 avfoundation_indev_suggest="coregraphics applicationservices"
3359 avfoundation_indev_extralibs="-framework Foundation"
3360 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3361 caca_outdev_deps="libcaca"
3362 decklink_deps_any="libdl LoadLibrary"
3363 decklink_indev_deps="decklink threads"
3364 decklink_indev_extralibs="-lstdc++"
3365 decklink_outdev_deps="decklink threads"
3366 decklink_outdev_suggest="libklvanc"
3367 decklink_outdev_extralibs="-lstdc++"
3368 dshow_indev_deps="IBaseFilter"
3369 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3370 fbdev_indev_deps="linux_fb_h"
3371 fbdev_outdev_deps="linux_fb_h"
3372 gdigrab_indev_deps="CreateDIBSection"
3373 gdigrab_indev_extralibs="-lgdi32"
3374 gdigrab_indev_select="bmp_decoder"
3375 iec61883_indev_deps="libiec61883"
3376 jack_indev_deps="libjack"
3377 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3378 kmsgrab_indev_deps="libdrm"
3379 lavfi_indev_deps="avfilter"
3380 libcdio_indev_deps="libcdio"
3381 libdc1394_indev_deps="libdc1394"
3382 openal_indev_deps="openal"
3383 opengl_outdev_deps="opengl"
3384 opengl_outdev_suggest="sdl2"
3385 oss_indev_deps_any="sys_soundcard_h"
3386 oss_outdev_deps_any="sys_soundcard_h"
3387 pulse_indev_deps="libpulse"
3388 pulse_outdev_deps="libpulse"
3389 sdl2_outdev_deps="sdl2"
3390 sndio_indev_deps="sndio"
3391 sndio_outdev_deps="sndio"
3392 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3393 v4l2_indev_suggest="libv4l2"
3394 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3395 v4l2_outdev_suggest="libv4l2"
3396 vfwcap_indev_deps="vfw32 vfwcap_defines"
3397 xcbgrab_indev_deps="libxcb"
3398 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3399 xv_outdev_deps="xlib"
3400
3401 # protocols
3402 async_protocol_deps="threads"
3403 bluray_protocol_deps="libbluray"
3404 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3405 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl mbedtls"
3406 ffrtmpcrypt_protocol_select="tcp_protocol"
3407 ffrtmphttp_protocol_conflict="librtmp_protocol"
3408 ffrtmphttp_protocol_select="http_protocol"
3409 ftp_protocol_select="tcp_protocol"
3410 gopher_protocol_select="network"
3411 http_protocol_select="tcp_protocol"
3412 http_protocol_suggest="zlib"
3413 httpproxy_protocol_select="tcp_protocol"
3414 httpproxy_protocol_suggest="zlib"
3415 https_protocol_select="tls_protocol"
3416 https_protocol_suggest="zlib"
3417 icecast_protocol_select="http_protocol"
3418 mmsh_protocol_select="http_protocol"
3419 mmst_protocol_select="network"
3420 rtmp_protocol_conflict="librtmp_protocol"
3421 rtmp_protocol_select="tcp_protocol"
3422 rtmp_protocol_suggest="zlib"
3423 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3424 rtmpe_protocol_suggest="zlib"
3425 rtmps_protocol_conflict="librtmp_protocol"
3426 rtmps_protocol_select="tls_protocol"
3427 rtmps_protocol_suggest="zlib"
3428 rtmpt_protocol_select="ffrtmphttp_protocol"
3429 rtmpt_protocol_suggest="zlib"
3430 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3431 rtmpte_protocol_suggest="zlib"
3432 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3433 rtmpts_protocol_suggest="zlib"
3434 rtp_protocol_select="udp_protocol"
3435 schannel_conflict="openssl gnutls libtls mbedtls"
3436 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3437 sctp_protocol_select="network"
3438 securetransport_conflict="openssl gnutls libtls mbedtls"
3439 srtp_protocol_select="rtp_protocol srtp"
3440 tcp_protocol_select="network"
3441 tls_protocol_deps_any="gnutls openssl schannel securetransport libtls mbedtls"
3442 tls_protocol_select="tcp_protocol"
3443 udp_protocol_select="network"
3444 udplite_protocol_select="network"
3445 unix_protocol_deps="sys_un_h"
3446 unix_protocol_select="network"
3447
3448 # external library protocols
3449 libamqp_protocol_deps="librabbitmq"
3450 libamqp_protocol_select="network"
3451 librtmp_protocol_deps="librtmp"
3452 librtmpe_protocol_deps="librtmp"
3453 librtmps_protocol_deps="librtmp"
3454 librtmpt_protocol_deps="librtmp"
3455 librtmpte_protocol_deps="librtmp"
3456 libsmbclient_protocol_deps="libsmbclient gplv3"
3457 libsrt_protocol_deps="libsrt"
3458 libsrt_protocol_select="network"
3459 libssh_protocol_deps="libssh"
3460 libtls_conflict="openssl gnutls mbedtls"
3461 libzmq_protocol_deps="libzmq"
3462 libzmq_protocol_select="network"
3463
3464 # filters
3465 afftdn_filter_deps="avcodec"
3466 afftdn_filter_select="fft"
3467 afftfilt_filter_deps="avcodec"
3468 afftfilt_filter_select="fft"
3469 afir_filter_deps="avcodec"
3470 afir_filter_select="rdft"
3471 amovie_filter_deps="avcodec avformat"
3472 aresample_filter_deps="swresample"
3473 asr_filter_deps="pocketsphinx"
3474 ass_filter_deps="libass"
3475 atempo_filter_deps="avcodec"
3476 atempo_filter_select="rdft"
3477 avgblur_opencl_filter_deps="opencl"
3478 avgblur_vulkan_filter_deps="vulkan libglslang"
3479 azmq_filter_deps="libzmq"
3480 blackframe_filter_deps="gpl"
3481 bm3d_filter_deps="avcodec"
3482 bm3d_filter_select="dct"
3483 boxblur_filter_deps="gpl"
3484 boxblur_opencl_filter_deps="opencl gpl"
3485 bs2b_filter_deps="libbs2b"
3486 chromaber_vulkan_filter_deps="vulkan libglslang"
3487 colorkey_opencl_filter_deps="opencl"
3488 colormatrix_filter_deps="gpl"
3489 convolution_opencl_filter_deps="opencl"
3490 convolve_filter_deps="avcodec"
3491 convolve_filter_select="fft"
3492 coreimage_filter_deps="coreimage appkit"
3493 coreimage_filter_extralibs="-framework OpenGL"
3494 coreimagesrc_filter_deps="coreimage appkit"
3495 coreimagesrc_filter_extralibs="-framework OpenGL"
3496 cover_rect_filter_deps="avcodec avformat gpl"
3497 cropdetect_filter_deps="gpl"
3498 deconvolve_filter_deps="avcodec"
3499 deconvolve_filter_select="fft"
3500 deinterlace_qsv_filter_deps="libmfx"
3501 deinterlace_vaapi_filter_deps="vaapi"
3502 delogo_filter_deps="gpl"
3503 denoise_vaapi_filter_deps="vaapi"
3504 derain_filter_select="dnn"
3505 deshake_filter_select="pixelutils"
3506 deshake_opencl_filter_deps="opencl"
3507 dilation_opencl_filter_deps="opencl"
3508 dnn_processing_filter_deps="swscale"
3509 dnn_processing_filter_select="dnn"
3510 drawtext_filter_deps="libfreetype"
3511 drawtext_filter_suggest="libfontconfig libfribidi"
3512 elbg_filter_deps="avcodec"
3513 eq_filter_deps="gpl"
3514 erosion_opencl_filter_deps="opencl"
3515 fftfilt_filter_deps="avcodec"
3516 fftfilt_filter_select="rdft"
3517 fftdnoiz_filter_deps="avcodec"
3518 fftdnoiz_filter_select="fft"
3519 find_rect_filter_deps="avcodec avformat gpl"
3520 firequalizer_filter_deps="avcodec"
3521 firequalizer_filter_select="rdft"
3522 flite_filter_deps="libflite"
3523 framerate_filter_select="scene_sad"
3524 freezedetect_filter_select="scene_sad"
3525 frei0r_filter_deps="frei0r libdl"
3526 frei0r_src_filter_deps="frei0r libdl"
3527 fspp_filter_deps="gpl"
3528 headphone_filter_select="fft"
3529 histeq_filter_deps="gpl"
3530 hqdn3d_filter_deps="gpl"
3531 interlace_filter_deps="gpl"
3532 kerndeint_filter_deps="gpl"
3533 ladspa_filter_deps="ladspa libdl"
3534 lensfun_filter_deps="liblensfun version3"
3535 lv2_filter_deps="lv2"
3536 mcdeint_filter_deps="avcodec gpl"
3537 movie_filter_deps="avcodec avformat"
3538 mpdecimate_filter_deps="gpl"
3539 mpdecimate_filter_select="pixelutils"
3540 minterpolate_filter_select="scene_sad"
3541 mptestsrc_filter_deps="gpl"
3542 negate_filter_deps="lut_filter"
3543 nlmeans_opencl_filter_deps="opencl"
3544 nnedi_filter_deps="gpl"
3545 ocr_filter_deps="libtesseract"
3546 ocv_filter_deps="libopencv"
3547 openclsrc_filter_deps="opencl"
3548 overlay_opencl_filter_deps="opencl"
3549 overlay_qsv_filter_deps="libmfx"
3550 overlay_qsv_filter_select="qsvvpp"
3551 overlay_vulkan_filter_deps="vulkan libglslang"
3552 owdenoise_filter_deps="gpl"
3553 pad_opencl_filter_deps="opencl"
3554 pan_filter_deps="swresample"
3555 perspective_filter_deps="gpl"
3556 phase_filter_deps="gpl"
3557 pp7_filter_deps="gpl"
3558 pp_filter_deps="gpl postproc"
3559 prewitt_opencl_filter_deps="opencl"
3560 procamp_vaapi_filter_deps="vaapi"
3561 program_opencl_filter_deps="opencl"
3562 pullup_filter_deps="gpl"
3563 removelogo_filter_deps="avcodec avformat swscale"
3564 repeatfields_filter_deps="gpl"
3565 resample_filter_deps="avresample"
3566 roberts_opencl_filter_deps="opencl"
3567 rubberband_filter_deps="librubberband"
3568 sab_filter_deps="gpl swscale"
3569 scale2ref_filter_deps="swscale"
3570 scale_filter_deps="swscale"
3571 scale_qsv_filter_deps="libmfx"
3572 scdet_filter_select="scene_sad"
3573 select_filter_select="scene_sad"
3574 sharpness_vaapi_filter_deps="vaapi"
3575 showcqt_filter_deps="avcodec avformat swscale"
3576 showcqt_filter_suggest="libfontconfig libfreetype"
3577 showcqt_filter_select="fft"
3578 showfreqs_filter_deps="avcodec"
3579 showfreqs_filter_select="fft"
3580 showspatial_filter_select="fft"
3581 showspectrum_filter_deps="avcodec"
3582 showspectrum_filter_select="fft"
3583 showspectrumpic_filter_deps="avcodec"
3584 showspectrumpic_filter_select="fft"
3585 signature_filter_deps="gpl avcodec avformat"
3586 sinc_filter_select="rdft"
3587 smartblur_filter_deps="gpl swscale"
3588 sobel_opencl_filter_deps="opencl"
3589 sofalizer_filter_deps="libmysofa avcodec"
3590 sofalizer_filter_select="fft"
3591 spectrumsynth_filter_deps="avcodec"
3592 spectrumsynth_filter_select="fft"
3593 spp_filter_deps="gpl avcodec"
3594 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3595 sr_filter_deps="avformat swscale"
3596 sr_filter_select="dnn"
3597 stereo3d_filter_deps="gpl"
3598 subtitles_filter_deps="avformat avcodec libass"
3599 super2xsai_filter_deps="gpl"
3600 pixfmts_super2xsai_test_deps="super2xsai_filter"
3601 superequalizer_filter_select="rdft"
3602 surround_filter_select="rdft"
3603 tinterlace_filter_deps="gpl"
3604 tinterlace_merge_test_deps="tinterlace_filter"
3605 tinterlace_pad_test_deps="tinterlace_filter"
3606 tonemap_filter_deps="const_nan"
3607 tonemap_vaapi_filter_deps="vaapi VAProcFilterParameterBufferHDRToneMapping"
3608 tonemap_opencl_filter_deps="opencl const_nan"
3609 transpose_opencl_filter_deps="opencl"
3610 transpose_vaapi_filter_deps="vaapi VAProcPipelineCaps_rotation_flags"
3611 unsharp_opencl_filter_deps="opencl"
3612 uspp_filter_deps="gpl avcodec"
3613 vaguedenoiser_filter_deps="gpl"
3614 vidstabdetect_filter_deps="libvidstab"
3615 vidstabtransform_filter_deps="libvidstab"
3616 libvmaf_filter_deps="libvmaf pthreads"
3617 zmq_filter_deps="libzmq"
3618 zoompan_filter_deps="swscale"
3619 zscale_filter_deps="libzimg const_nan"
3620 scale_vaapi_filter_deps="vaapi"
3621 scale_vulkan_filter_deps="vulkan libglslang"
3622 vpp_qsv_filter_deps="libmfx"
3623 vpp_qsv_filter_select="qsvvpp"
3624 xfade_opencl_filter_deps="opencl"
3625 yadif_cuda_filter_deps="ffnvcodec"
3626 yadif_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3627
3628 # examples
3629 avio_list_dir_deps="avformat avutil"
3630 avio_reading_deps="avformat avcodec avutil"
3631 decode_audio_example_deps="avcodec avutil"
3632 decode_video_example_deps="avcodec avutil"
3633 demuxing_decoding_example_deps="avcodec avformat avutil"
3634 encode_audio_example_deps="avcodec avutil"
3635 encode_video_example_deps="avcodec avutil"
3636 extract_mvs_example_deps="avcodec avformat avutil"
3637 filter_audio_example_deps="avfilter avutil"
3638 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3639 filtering_video_example_deps="avfilter avcodec avformat avutil"
3640 http_multiclient_example_deps="avformat avutil fork"
3641 hw_decode_example_deps="avcodec avformat avutil"
3642 metadata_example_deps="avformat avutil"
3643 muxing_example_deps="avcodec avformat avutil swscale"
3644 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3645 remuxing_example_deps="avcodec avformat avutil"
3646 resampling_audio_example_deps="avutil swresample"
3647 scaling_video_example_deps="avutil swscale"
3648 transcode_aac_example_deps="avcodec avformat swresample"
3649 transcoding_example_deps="avfilter avcodec avformat avutil"
3650 vaapi_encode_example_deps="avcodec avutil h264_vaapi_encoder"
3651 vaapi_transcode_example_deps="avcodec avformat avutil h264_vaapi_encoder"
3652
3653 # EXTRALIBS_LIST
3654 cpu_init_extralibs="pthreads_extralibs"
3655 cws2fws_extralibs="zlib_extralibs"
3656
3657 # libraries, in any order
3658 avcodec_deps="avutil"
3659 avcodec_suggest="libm"
3660 avcodec_select="null_bsf"
3661 avdevice_deps="avformat avcodec avutil"
3662 avdevice_suggest="libm"
3663 avfilter_deps="avutil"
3664 avfilter_suggest="libm"
3665 avformat_deps="avcodec avutil"
3666 avformat_suggest="libm network zlib"
3667 avresample_deps="avutil"
3668 avresample_suggest="libm"
3669 avutil_suggest="clock_gettime ffnvcodec libm libdrm libmfx opencl user32 vaapi vulkan videotoolbox corefoundation corevideo coremedia bcrypt"
3670 postproc_deps="avutil gpl"
3671 postproc_suggest="libm"
3672 swresample_deps="avutil"
3673 swresample_suggest="libm libsoxr"
3674 swscale_deps="avutil"
3675 swscale_suggest="libm"
3676
3677 avcodec_extralibs="pthreads_extralibs iconv_extralibs dxva2_extralibs"
3678 avfilter_extralibs="pthreads_extralibs"
3679 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3680
3681 # programs
3682 ffmpeg_deps="avcodec avfilter avformat"
3683 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3684                hflip_filter null_filter
3685                transpose_filter trim_filter vflip_filter"
3686 ffmpeg_suggest="ole32 psapi shell32"
3687 ffplay_deps="avcodec avformat swscale swresample sdl2"
3688 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3689 ffplay_suggest="shell32"
3690 ffprobe_deps="avcodec avformat"
3691 ffprobe_suggest="shell32"
3692
3693 # documentation
3694 podpages_deps="perl"
3695 manpages_deps="perl pod2man"
3696 htmlpages_deps="perl"
3697 htmlpages_deps_any="makeinfo_html texi2html"
3698 txtpages_deps="perl makeinfo"
3699 doc_deps_any="manpages htmlpages podpages txtpages"
3700
3701 # default parameters
3702
3703 logfile="ffbuild/config.log"
3704
3705 # installation paths
3706 prefix_default="/usr/local"
3707 bindir_default='${prefix}/bin'
3708 datadir_default='${prefix}/share/ffmpeg'
3709 docdir_default='${prefix}/share/doc/ffmpeg'
3710 incdir_default='${prefix}/include'
3711 libdir_default='${prefix}/lib'
3712 mandir_default='${prefix}/share/man'
3713
3714 # toolchain
3715 ar_default="ar"
3716 cc_default="gcc"
3717 cxx_default="g++"
3718 host_cc_default="gcc"
3719 doxygen_default="doxygen"
3720 install="install"
3721 ln_s_default="ln -s -f"
3722 nm_default="nm -g"
3723 pkg_config_default=pkg-config
3724 ranlib_default="ranlib"
3725 strip_default="strip"
3726 version_script='--version-script'
3727 objformat="elf32"
3728 x86asmexe_default="nasm"
3729 windres_default="windres"
3730 striptype="direct"
3731
3732 # OS
3733 target_os_default=$(tolower $(uname -s))
3734 host_os=$target_os_default
3735
3736 # machine
3737 if test "$target_os_default" = aix; then
3738     arch_default=$(uname -p)
3739     strip_default="strip -X32_64"
3740     nm_default="nm -g -X32_64"
3741 else
3742     arch_default=$(uname -m)
3743 fi
3744 cpu="generic"
3745 intrinsics="none"
3746
3747 # configurable options
3748 enable $PROGRAM_LIST
3749 enable $DOCUMENT_LIST
3750 enable $EXAMPLE_LIST
3751 enable $(filter_out avresample $LIBRARY_LIST)
3752 enable stripping
3753
3754 enable asm
3755 enable debug
3756 enable doc
3757 enable faan faandct faanidct
3758 enable large_tests
3759 enable optimizations
3760 enable runtime_cpudetect
3761 enable safe_bitstream_reader
3762 enable static
3763 enable swscale_alpha
3764 enable valgrind_backtrace
3765
3766 sws_max_filter_size_default=256
3767 set_default sws_max_filter_size
3768
3769 # internal components are enabled by default
3770 enable $EXTRALIBS_LIST
3771
3772 # Avoid external, non-system, libraries getting enabled by dependency resolution
3773 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3774
3775 # build settings
3776 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3777 LIBPREF="lib"
3778 LIBSUF=".a"
3779 FULLNAME='$(NAME)$(BUILDSUF)'
3780 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3781 SLIBPREF="lib"
3782 SLIBSUF=".so"
3783 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3784 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3785 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3786 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3787 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3788 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3789 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3790
3791 asflags_filter=echo
3792 cflags_filter=echo
3793 ldflags_filter=echo
3794
3795 AS_C='-c'
3796 AS_O='-o $@'
3797 CC_C='-c'
3798 CC_E='-E -o $@'
3799 CC_O='-o $@'
3800 CXX_C='-c'
3801 CXX_O='-o $@'
3802 OBJCC_C='-c'
3803 OBJCC_E='-E -o $@'
3804 OBJCC_O='-o $@'
3805 X86ASM_O='-o $@'
3806 LD_O='-o $@'
3807 LD_LIB='-l%'
3808 LD_PATH='-L'
3809 HOSTCC_C='-c'
3810 HOSTCC_E='-E -o $@'
3811 HOSTCC_O='-o $@'
3812 HOSTLD_O='-o $@'
3813 NVCC_C='-c'
3814 NVCC_O='-o $@'
3815
3816 host_extralibs='-lm'
3817 host_cflags_filter=echo
3818 host_ldflags_filter=echo
3819
3820 target_path='$(CURDIR)'
3821
3822 # since the object filename is not given with the -MM flag, the compiler
3823 # is only able to print the basename, and we must add the path ourselves
3824 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3825 DEPFLAGS='-MM'
3826
3827 mkdir -p ffbuild
3828
3829 # find source path
3830 if test -f configure; then
3831     source_path=.
3832 elif test -f src/configure; then
3833     source_path=src
3834 else
3835     source_path=$(cd $(dirname "$0"); pwd)
3836     case "$source_path" in
3837         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3838     esac
3839     test -e "$source_path/config.h" &&
3840         die "Out of tree builds are impossible with config.h in source dir."
3841 fi
3842
3843 for v in "$@"; do
3844     r=${v#*=}
3845     l=${v%"$r"}
3846     r=$(sh_quote "$r")
3847     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3848 done
3849
3850 find_things_extern(){
3851     thing=$1
3852     pattern=$2
3853     file=$source_path/$3
3854     out=${4:-$thing}
3855     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$out/p" "$file"
3856 }
3857
3858 find_filters_extern(){
3859     file=$source_path/$1
3860     sed -n 's/^extern AVFilter ff_[avfsinkrc]\{2,5\}_\([[:alnum:]_]\{1,\}\);/\1_filter/p' $file
3861 }
3862
3863 FILTER_LIST=$(find_filters_extern libavfilter/allfilters.c)
3864 OUTDEV_LIST=$(find_things_extern muxer AVOutputFormat libavdevice/alldevices.c outdev)
3865 INDEV_LIST=$(find_things_extern demuxer AVInputFormat libavdevice/alldevices.c indev)
3866 MUXER_LIST=$(find_things_extern muxer AVOutputFormat libavformat/allformats.c)
3867 DEMUXER_LIST=$(find_things_extern demuxer AVInputFormat libavformat/allformats.c)
3868 ENCODER_LIST=$(find_things_extern encoder AVCodec libavcodec/allcodecs.c)
3869 DECODER_LIST=$(find_things_extern decoder AVCodec libavcodec/allcodecs.c)
3870 CODEC_LIST="
3871     $ENCODER_LIST
3872     $DECODER_LIST
3873 "
3874 PARSER_LIST=$(find_things_extern parser AVCodecParser libavcodec/parsers.c)
3875 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3876 HWACCEL_LIST=$(find_things_extern hwaccel AVHWAccel libavcodec/hwaccels.h)
3877 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3878
3879 AVCODEC_COMPONENTS_LIST="
3880     $BSF_LIST
3881     $DECODER_LIST
3882     $ENCODER_LIST
3883     $HWACCEL_LIST
3884     $PARSER_LIST
3885 "
3886
3887 AVDEVICE_COMPONENTS_LIST="
3888     $INDEV_LIST
3889     $OUTDEV_LIST
3890 "
3891
3892 AVFILTER_COMPONENTS_LIST="
3893     $FILTER_LIST
3894 "
3895
3896 AVFORMAT_COMPONENTS_LIST="
3897     $DEMUXER_LIST
3898     $MUXER_LIST
3899     $PROTOCOL_LIST
3900 "
3901
3902 ALL_COMPONENTS="
3903     $AVCODEC_COMPONENTS_LIST
3904     $AVDEVICE_COMPONENTS_LIST
3905     $AVFILTER_COMPONENTS_LIST
3906     $AVFORMAT_COMPONENTS_LIST
3907 "
3908
3909 for n in $COMPONENT_LIST; do
3910     v=$(toupper ${n%s})_LIST
3911     eval enable \$$v
3912     eval ${n}_if_any="\$$v"
3913 done
3914
3915 enable $ARCH_EXT_LIST
3916
3917 die_unknown(){
3918     echo "Unknown option \"$1\"."
3919     echo "See $0 --help for available options."
3920     exit 1
3921 }
3922
3923 print_in_columns() {
3924     tr ' ' '\n' | sort | tr '\r\n' '  ' | awk -v col_width=24 -v width="$ncols" '
3925     {
3926         num_cols = width > col_width ? int(width / col_width) : 1;
3927         num_rows = int((NF + num_cols-1) / num_cols);
3928         y = x = 1;
3929         for (y = 1; y <= num_rows; y++) {
3930             i = y;
3931             for (x = 1; x <= num_cols; x++) {
3932                 if (i <= NF) {
3933                   line = sprintf("%s%-" col_width "s", line, $i);
3934                 }
3935                 i = i + num_rows;
3936             }
3937             print line; line = "";
3938         }
3939     }' | sed 's/ *$//'
3940 }
3941
3942 show_list() {
3943     suffix=_$1
3944     shift
3945     echo $* | sed s/$suffix//g | print_in_columns
3946     exit 0
3947 }
3948
3949 rand_list(){
3950     IFS=', '
3951     set -- $*
3952     unset IFS
3953     for thing; do
3954         comp=${thing%:*}
3955         prob=${thing#$comp}
3956         prob=${prob#:}
3957         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3958         echo "prob ${prob:-0.5}"
3959         printf '%s\n' $comp
3960     done
3961 }
3962
3963 do_random(){
3964     action=$1
3965     shift
3966     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3967     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3968 }
3969
3970 for opt do
3971     optval="${opt#*=}"
3972     case "$opt" in
3973         --extra-ldflags=*)
3974             add_ldflags $optval
3975         ;;
3976         --extra-ldexeflags=*)
3977             add_ldexeflags $optval
3978         ;;
3979         --extra-ldsoflags=*)
3980             add_ldsoflags $optval
3981         ;;
3982         --extra-ldlibflags=*)
3983             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3984                  "removed in the future. Use --extra-ldsoflags instead."
3985             add_ldsoflags $optval
3986         ;;
3987         --extra-libs=*)
3988             add_extralibs $optval
3989         ;;
3990         --disable-devices)
3991             disable $INDEV_LIST $OUTDEV_LIST
3992         ;;
3993         --enable-debug=*)
3994             debuglevel="$optval"
3995         ;;
3996         --disable-programs)
3997             disable $PROGRAM_LIST
3998         ;;
3999         --disable-everything)
4000             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
4001         ;;
4002         --disable-all)
4003             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
4004             disable $LIBRARY_LIST $PROGRAM_LIST doc
4005             enable avutil
4006         ;;
4007         --enable-random|--disable-random)
4008             action=${opt%%-random}
4009             do_random ${action#--} $COMPONENT_LIST
4010         ;;
4011         --enable-random=*|--disable-random=*)
4012             action=${opt%%-random=*}
4013             do_random ${action#--} $optval
4014         ;;
4015         --enable-sdl)
4016             enable sdl2
4017         ;;
4018         --enable-*=*|--disable-*=*)
4019             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
4020             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
4021             eval list=\$$(toupper $thing)_LIST
4022             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
4023             list=$(filter "$name" $list)
4024             [ "$list" = "" ] && warn "Option $opt did not match anything"
4025             test $action = enable && warn_if_gets_disabled $list
4026             $action $list
4027         ;;
4028         --enable-yasm|--disable-yasm)
4029             warn "The ${opt} option is only provided for compatibility and will be\n"\
4030                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
4031             test $opt = --enable-yasm && x86asm=yes || x86asm=no
4032         ;;
4033         --yasmexe=*)
4034             warn "The --yasmexe option is only provided for compatibility and will be\n"\
4035                  "removed in the future. Use --x86asmexe instead."
4036             x86asmexe="$optval"
4037         ;;
4038         --enable-?*|--disable-?*)
4039             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
4040             if is_in $option $COMPONENT_LIST; then
4041                 test $action = disable && action=unset
4042                 eval $action \$$(toupper ${option%s})_LIST
4043             elif is_in $option $CMDLINE_SELECT; then
4044                 $action $option
4045             else
4046                 die_unknown $opt
4047             fi
4048         ;;
4049         --list-*)
4050             NAME="${opt#--list-}"
4051             is_in $NAME $COMPONENT_LIST || die_unknown $opt
4052             NAME=${NAME%s}
4053             eval show_list $NAME \$$(toupper $NAME)_LIST
4054         ;;
4055         --help|-h) show_help
4056         ;;
4057         --quiet|-q) quiet=yes
4058         ;;
4059         --fatal-warnings) enable fatal_warnings
4060         ;;
4061         --libfuzzer=*)
4062             libfuzzer_path="$optval"
4063         ;;
4064         *)
4065             optname="${opt%%=*}"
4066             optname="${optname#--}"
4067             optname=$(echo "$optname" | sed 's/-/_/g')
4068             if is_in $optname $CMDLINE_SET; then
4069                 eval $optname='$optval'
4070             elif is_in $optname $CMDLINE_APPEND; then
4071                 append $optname "$optval"
4072             else
4073                 die_unknown $opt
4074             fi
4075         ;;
4076     esac
4077 done
4078
4079 for e in $env; do
4080     eval "export $e"
4081 done
4082
4083 if disabled autodetect; then
4084
4085     # Unless iconv is explicitely disabled by the user, we still want to probe
4086     # for the iconv from the libc.
4087     disabled iconv || enable libc_iconv
4088
4089     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
4090     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
4091 fi
4092 # Mark specifically enabled, but normally autodetected libraries as requested.
4093 for lib in $AUTODETECT_LIBS; do
4094     enabled $lib && request $lib
4095 done
4096 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
4097 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
4098 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
4099
4100 disabled logging && logfile=/dev/null
4101
4102 # command line configuration sanity checks
4103
4104 # we need to build at least one lib type
4105 if ! enabled_any static shared; then
4106     cat <<EOF
4107 At least one library type must be built.
4108 Specify --enable-static to build the static libraries or --enable-shared to
4109 build the shared libraries as well. To only build the shared libraries specify
4110 --disable-static in addition to --enable-shared.
4111 EOF
4112     exit 1
4113 fi
4114
4115 die_license_disabled() {
4116     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
4117 }
4118
4119 die_license_disabled_gpl() {
4120     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
4121 }
4122
4123 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
4124 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
4125
4126 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
4127 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
4128
4129 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4130
4131 if enabled nonfree; then
4132     license="nonfree and unredistributable"
4133 elif enabled gplv3; then
4134     license="GPL version 3 or later"
4135 elif enabled lgplv3; then
4136     license="LGPL version 3 or later"
4137 elif enabled gpl; then
4138     license="GPL version 2 or later"
4139 else
4140     license="LGPL version 2.1 or later"
4141 fi
4142
4143 enabled_all gnutls openssl &&
4144     die "GnuTLS and OpenSSL must not be enabled at the same time."
4145
4146 enabled_all gnutls mbedtls &&
4147     die "GnuTLS and mbedTLS must not be enabled at the same time."
4148
4149 enabled_all openssl mbedtls &&
4150     die "OpenSSL and mbedTLS must not be enabled at the same time."
4151
4152 # Disable all the library-specific components if the library itself
4153 # is disabled, see AVCODEC_LIST and following _LIST variables.
4154
4155 disable_components(){
4156     disabled ${1} && disable $(
4157         eval components="\$$(toupper ${1})_COMPONENTS"
4158         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
4159     )
4160 }
4161
4162 map 'disable_components $v' $LIBRARY_LIST
4163
4164 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
4165 set >> $logfile
4166
4167 test -n "$valgrind" && toolchain="valgrind-memcheck"
4168
4169 enabled ossfuzz && ! echo $CFLAGS | grep -q -- "-fsanitize="  && ! echo $CFLAGS | grep -q -- "-fcoverage-mapping" &&{
4170     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
4171     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
4172 }
4173
4174 case "$toolchain" in
4175     *-asan)
4176         cc_default="${toolchain%-asan}"
4177         add_cflags  -fsanitize=address
4178         add_ldflags -fsanitize=address
4179     ;;
4180     *-msan)
4181         cc_default="${toolchain%-msan}"
4182         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
4183         add_ldflags -fsanitize=memory
4184     ;;
4185     *-tsan)
4186         cc_default="${toolchain%-tsan}"
4187         add_cflags  -fsanitize=thread
4188         add_ldflags -fsanitize=thread
4189         case "$toolchain" in
4190             gcc-tsan)
4191                 add_cflags  -fPIC
4192                 add_ldflags -fPIC
4193                 ;;
4194         esac
4195     ;;
4196     *-usan)
4197         cc_default="${toolchain%-usan}"
4198         add_cflags  -fsanitize=undefined
4199         add_ldflags -fsanitize=undefined
4200     ;;
4201     valgrind-*)
4202         target_exec_default="valgrind"
4203         case "$toolchain" in
4204             valgrind-massif)
4205                 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"
4206                 ;;
4207             valgrind-memcheck)
4208                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
4209                 ;;
4210         esac
4211     ;;
4212     msvc)
4213         # Check whether the current MSVC version needs the C99 converter.
4214         # From MSVC 2013 (compiler major version 18) onwards, it does actually
4215         # support enough of C99 to build ffmpeg. Default to the new
4216         # behaviour if the regexp was unable to match anything, since this
4217         # successfully parses the version number of existing supported
4218         # versions that require the converter (MSVC 2010 and 2012).
4219         cl_major_ver=$(cl.exe 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
4220         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
4221             cc_default="cl.exe"
4222             cxx_default="cl.exe"
4223         else
4224             die "Unsupported MSVC version (2013 or newer required)"
4225         fi
4226         ld_default="$source_path/compat/windows/mslink"
4227         nm_default="dumpbin.exe -symbols"
4228         ar_default="lib.exe"
4229         case "$arch" in
4230         aarch64|arm64)
4231             as_default="armasm64.exe"
4232             ;;
4233         arm*)
4234             as_default="armasm.exe"
4235             ;;
4236         esac
4237         target_os_default="win32"
4238         # Use a relative path for TMPDIR. This makes sure all the
4239         # ffconf temp files are written with a relative path, avoiding
4240         # issues with msys/win32 path conversion for MSVC parameters
4241         # such as -Fo<file> or -out:<file>.
4242         TMPDIR=.
4243     ;;
4244     icl)
4245         cc_default="icl"
4246         ld_default="xilink"
4247         nm_default="dumpbin -symbols"
4248         ar_default="xilib"
4249         target_os_default="win32"
4250         TMPDIR=.
4251     ;;
4252     gcov)
4253         add_cflags  -fprofile-arcs -ftest-coverage
4254         add_ldflags -fprofile-arcs -ftest-coverage
4255     ;;
4256     llvm-cov)
4257         add_cflags -fprofile-arcs -ftest-coverage
4258         add_ldflags --coverage
4259     ;;
4260     hardened)
4261         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
4262         add_cflags   -fno-strict-overflow -fstack-protector-all
4263         add_ldflags  -Wl,-z,relro -Wl,-z,now
4264         add_cflags   -fPIE
4265         add_ldexeflags -fPIE -pie
4266     ;;
4267     ?*)
4268         die "Unknown toolchain $toolchain"
4269     ;;
4270 esac
4271
4272 if test -n "$cross_prefix"; then
4273     test -n "$arch" && test -n "$target_os" ||
4274         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
4275     enable cross_compile
4276 fi
4277
4278 set_default target_os
4279 if test "$target_os" = android; then
4280     cc_default="clang"
4281 fi
4282
4283 ar_default="${cross_prefix}${ar_default}"
4284 cc_default="${cross_prefix}${cc_default}"
4285 cxx_default="${cross_prefix}${cxx_default}"
4286 nm_default="${cross_prefix}${nm_default}"
4287 pkg_config_default="${cross_prefix}${pkg_config_default}"
4288 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
4289     ranlib_default="${cross_prefix}${ranlib_default} -D"
4290 else
4291     ranlib_default="${cross_prefix}${ranlib_default}"
4292 fi
4293 strip_default="${cross_prefix}${strip_default}"
4294 windres_default="${cross_prefix}${windres_default}"
4295
4296 sysinclude_default="${sysroot}/usr/include"
4297
4298 if enabled cuda_sdk; then
4299     warn "Option --enable-cuda-sdk is deprecated. Use --enable-cuda-nvcc instead."
4300     enable cuda_nvcc
4301 fi
4302
4303 if enabled cuda_nvcc; then
4304     nvcc_default="nvcc"
4305     nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
4306 else
4307     nvcc_default="clang"
4308     nvccflags_default="--cuda-gpu-arch=sm_30 -O2"
4309     NVCC_C=""
4310 fi
4311
4312 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
4313     target_exec x86asmexe nvcc
4314 enabled cross_compile || host_cc_default=$cc
4315 set_default host_cc
4316
4317 pkg_config_fail_message=""
4318 if ! $pkg_config --version >/dev/null 2>&1; then
4319     warn "$pkg_config not found, library detection may fail."
4320     pkg_config=false
4321 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
4322     pkg_config_fail_message="
4323 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
4324 fi
4325
4326 if test $doxygen != $doxygen_default && \
4327   ! $doxygen --version >/dev/null 2>&1; then
4328     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
4329 fi
4330
4331 exesuf() {
4332     case $1 in
4333         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
4334     esac
4335 }
4336
4337 EXESUF=$(exesuf $target_os)
4338 HOSTEXESUF=$(exesuf $host_os)
4339
4340 # set temporary file name
4341 : ${TMPDIR:=$TEMPDIR}
4342 : ${TMPDIR:=$TMP}
4343 : ${TMPDIR:=/tmp}
4344
4345 if [ -n "$tempprefix" ] ; then
4346     mktemp(){
4347         tmpname="$tempprefix.${HOSTNAME}.${UID}"
4348         echo "$tmpname"
4349         mkdir "$tmpname"
4350     }
4351 elif ! test_cmd mktemp -u XXXXXX; then
4352     # simple replacement for missing mktemp
4353     # NOT SAFE FOR GENERAL USE
4354     mktemp(){
4355         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
4356         echo "$tmpname"
4357         mkdir "$tmpname"
4358     }
4359 fi
4360
4361 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
4362     die "Unable to create temporary directory in $TMPDIR."
4363
4364 tmpfile(){
4365     tmp="${FFTMPDIR}/test"$2
4366     (set -C; exec > $tmp) 2> /dev/null ||
4367         die "Unable to create temporary file in $FFTMPDIR."
4368     eval $1=$tmp
4369 }
4370
4371 trap 'rm -rf -- "$FFTMPDIR"' EXIT
4372 trap 'exit 2' INT
4373
4374 tmpfile TMPASM .asm
4375 tmpfile TMPC   .c
4376 tmpfile TMPCPP .cpp
4377 tmpfile TMPE   $EXESUF
4378 tmpfile TMPH   .h
4379 tmpfile TMPM   .m
4380 tmpfile TMPCU  .cu
4381 tmpfile TMPO   .o
4382 tmpfile TMPS   .S
4383 tmpfile TMPSH  .sh
4384 tmpfile TMPV   .ver
4385
4386 unset -f mktemp
4387
4388 chmod +x $TMPE
4389
4390 # make sure we can execute files in $TMPDIR
4391 cat > $TMPSH 2>> $logfile <<EOF
4392 #! /bin/sh
4393 EOF
4394 chmod +x $TMPSH >> $logfile 2>&1
4395 if ! $TMPSH >> $logfile 2>&1; then
4396     cat <<EOF
4397 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
4398 variable to another directory and make sure that it is not mounted noexec.
4399 EOF
4400     die "Sanity test failed."
4401 fi
4402
4403 armasm_flags(){
4404     for flag; do
4405         case $flag in
4406             # Filter out MSVC cl.exe options from cflags that shouldn't
4407             # be passed to gas-preprocessor
4408             -M[TD]*)                                            ;;
4409             *)                  echo $flag                      ;;
4410         esac
4411    done
4412 }
4413
4414 cparser_flags(){
4415     for flag; do
4416         case $flag in
4417             -Wno-switch)             echo -Wno-switch-enum ;;
4418             -Wno-format-zero-length) ;;
4419             -Wdisabled-optimization) ;;
4420             -Wno-pointer-sign)       echo -Wno-other ;;
4421             *)                       echo $flag ;;
4422         esac
4423     done
4424 }
4425
4426 msvc_common_flags(){
4427     for flag; do
4428         case $flag in
4429             # In addition to specifying certain flags under the compiler
4430             # specific filters, they must be specified here as well or else the
4431             # generic catch all at the bottom will print the original flag.
4432             -Wall)                ;;
4433             -Wextra)              ;;
4434             -std=c*)              ;;
4435             # Common flags
4436             -fomit-frame-pointer) ;;
4437             -g)                   echo -Z7 ;;
4438             -fno-math-errno)      ;;
4439             -fno-common)          ;;
4440             -fno-signed-zeros)    ;;
4441             -fPIC)                ;;
4442             -mthumb)              ;;
4443             -march=*)             ;;
4444             -lz)                  echo zlib.lib ;;
4445             -lx264)               echo libx264.lib ;;
4446             -lstdc++)             ;;
4447             -l*)                  echo ${flag#-l}.lib ;;
4448             -LARGEADDRESSAWARE)   echo $flag ;;
4449             -L*)                  echo -libpath:${flag#-L} ;;
4450             -Wl,*)                ;;
4451             *)                    echo $flag ;;
4452         esac
4453     done
4454 }
4455
4456 msvc_flags(){
4457     msvc_common_flags "$@"
4458     for flag; do
4459         case $flag in
4460             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4461                                        -wd4554 ;;
4462             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4463                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4464                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4465                                        -wd4307 \
4466                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4467         esac
4468     done
4469 }
4470
4471 icl_flags(){
4472     msvc_common_flags "$@"
4473     for flag; do
4474         case $flag in
4475             # Despite what Intel's documentation says -Wall, which is supported
4476             # on Windows, does enable remarks so disable them here.
4477             -Wall)                echo $flag -Qdiag-disable:remark ;;
4478             -std=c99)             echo -Qstd=c99 ;;
4479             -flto)                echo -ipo ;;
4480         esac
4481     done
4482 }
4483
4484 icc_flags(){
4485     for flag; do
4486         case $flag in
4487             -flto)                echo -ipo ;;
4488             *)                    echo $flag ;;
4489         esac
4490     done
4491 }
4492
4493 suncc_flags(){
4494     for flag; do
4495         case $flag in
4496             -march=*|-mcpu=*)
4497                 case "${flag#*=}" in
4498                     native)                   echo -xtarget=native       ;;
4499                     v9|niagara)               echo -xarch=sparc          ;;
4500                     ultrasparc)               echo -xarch=sparcvis       ;;
4501                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4502                     i586|pentium)             echo -xchip=pentium        ;;
4503                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4504                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4505                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4506                     pentium4*)          echo -xtarget=pentium4           ;;
4507                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4508                     *-sse3)             echo -xarch=sse3                 ;;
4509                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4510                     bonnell)                   echo -xarch=ssse3         ;;
4511                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4512                     westmere)                  echo -xtarget=westmere    ;;
4513                     silvermont)                echo -xarch=sse4_2        ;;
4514                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4515                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4516                                                echo -xarch=avx           ;;
4517                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4518                     btver1)                    echo -xarch=amdsse4a      ;;
4519                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4520                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4521                     k8|opteron|athlon64|athlon-fx)
4522                                                echo -xarch=sse2a         ;;
4523                     athlon*)                   echo -xarch=pentium_proa  ;;
4524                 esac
4525                 ;;
4526             -std=c99)             echo -xc99              ;;
4527             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4528             -fPIC)                echo -KPIC -xcode=pic32 ;;
4529             -W*,*)                echo $flag              ;;
4530             -f*-*|-W*|-mimpure-text)                      ;;
4531             -shared)              echo -G                 ;;
4532             *)                    echo $flag              ;;
4533         esac
4534     done
4535 }
4536
4537 probe_cc(){
4538     pfx=$1
4539     _cc=$2
4540     first=$3
4541
4542     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4543     unset _ld_o _ldflags _ld_lib _ld_path
4544     unset _depflags _DEPCMD _DEPFLAGS
4545     _flags_filter=echo
4546
4547     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4548         true # no-op to avoid reading stdin in following checks
4549     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4550         _type=llvm_gcc
4551         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4552         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4553         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4554         _cflags_speed='-O3'
4555         _cflags_size='-Os'
4556     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4557         _type=gcc
4558         gcc_version=$($_cc --version | head -n1)
4559         gcc_basever=$($_cc -dumpversion)
4560         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4561         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4562         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4563         case $gcc_basever in
4564             2) ;;
4565             2.*) ;;
4566             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4567         esac
4568         if [ "$first" = true ]; then
4569             case $gcc_basever in
4570                 4.2*)
4571                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4572             esac
4573         fi
4574         _cflags_speed='-O3'
4575         _cflags_size='-Os'
4576     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4577         _type=icc
4578         _ident=$($_cc --version | head -n1)
4579         _depflags='-MMD'
4580         _cflags_speed='-O3'
4581         _cflags_size='-Os'
4582         _cflags_noopt='-O1'
4583         _flags_filter=icc_flags
4584     elif $_cc -v 2>&1 | grep -q xlc; then
4585         _type=xlc
4586         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4587         _cflags_speed='-O5'
4588         _cflags_size='-O5 -qcompact'
4589     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4590         test -d "$sysroot" || die "No valid sysroot specified."
4591         _type=armcc
4592         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4593         armcc_conf="$PWD/armcc.conf"
4594         $_cc --arm_linux_configure                 \
4595              --arm_linux_config_file="$armcc_conf" \
4596              --configure_sysroot="$sysroot"        \
4597              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4598              die "Error creating armcc configuration file."
4599         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4600         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4601         as_default="${cross_prefix}gcc"
4602         _depflags='-MMD'
4603         _cflags_speed='-O3'
4604         _cflags_size='-Os'
4605     elif $_cc -v 2>&1 | grep -q clang && ! $_cc -? > /dev/null 2>&1; then
4606         _type=clang
4607         _ident=$($_cc --version 2>/dev/null | head -n1)
4608         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4609         _cflags_speed='-O3'
4610         _cflags_size='-Oz'
4611     elif $_cc -V 2>&1 | grep -q Sun; then
4612         _type=suncc
4613         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4614         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4615         _DEPFLAGS='-xM1 -xc99'
4616         _ldflags='-std=c99'
4617         _cflags_speed='-O5'
4618         _cflags_size='-O5 -xspace'
4619         _flags_filter=suncc_flags
4620     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4621         _type=pathscale
4622         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4623         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4624         _cflags_speed='-O2'
4625         _cflags_size='-Os'
4626         _flags_filter='filter_out -Wdisabled-optimization'
4627     elif $_cc -v 2>&1 | grep -q Open64; then
4628         _type=open64
4629         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4630         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4631         _cflags_speed='-O2'
4632         _cflags_size='-Os'
4633         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4634     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4635         _type=armasm
4636         _ident=$($_cc | head -n1)
4637         # 4509: "This form of conditional instruction is deprecated"
4638         _flags="-nologo -ignore 4509"
4639         _flags_filter=armasm_flags
4640     elif $_cc 2>&1 | grep -q Intel; then
4641         _type=icl
4642         _ident=$($_cc 2>&1 | head -n1)
4643         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4644         # Not only is O3 broken on 13.x+ but it is slower on all previous
4645         # versions (tested) as well.
4646         _cflags_speed="-O2"
4647         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4648         if $_cc 2>&1 | grep -q Linker; then
4649             _ld_o='-out:$@'
4650         else
4651             _ld_o='-Fe$@'
4652         fi
4653         _cc_o='-Fo$@'
4654         _cc_e='-P'
4655         _flags_filter=icl_flags
4656         _ld_lib='lib%.a'
4657         _ld_path='-libpath:'
4658         # -Qdiag-error to make icl error when seeing certain unknown arguments
4659         _flags='-nologo -Qdiag-error:4044,10157'
4660         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4661         # with MSVC which enables it by default.
4662         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4663         disable stripping
4664     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4665         # lld can emulate multiple different linkers; in ms link.exe mode,
4666         # the -? parameter gives the help output which contains an identifyable
4667         # string, while it gives an error in other modes.
4668         _type=lld-link
4669         # The link.exe mode doesn't have a switch for getting the version,
4670         # but we can force it back to gnu mode and get the version from there.
4671         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4672         _ld_o='-out:$@'
4673         _flags_filter=msvc_flags
4674         _ld_lib='lib%.a'
4675         _ld_path='-libpath:'
4676     elif $_cc -nologo- 2>&1 | grep -q Microsoft || { $_cc -v 2>&1 | grep -q clang && $_cc -? > /dev/null 2>&1; }; then
4677         _type=msvc
4678         if $_cc -nologo- 2>&1 | grep -q Microsoft; then
4679             _ident=$($_cc 2>&1 | head -n1 | tr -d '\r')
4680         else
4681             _ident=$($_cc --version 2>/dev/null | head -n1 | tr -d '\r')
4682         fi
4683         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4684         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4685         _cflags_speed="-O2"
4686         _cflags_size="-O1"
4687         _cflags_noopt="-O1"
4688         if $_cc -nologo- 2>&1 | grep -q Linker; then
4689             _ld_o='-out:$@'
4690         else
4691             _ld_o='-Fe$@'
4692         fi
4693         _cc_o='-Fo$@'
4694         _cc_e='-P -Fi$@'
4695         _flags_filter=msvc_flags
4696         _ld_lib='lib%.a'
4697         _ld_path='-libpath:'
4698         _flags='-nologo'
4699         disable stripping
4700     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4701         _type=cparser
4702         _ident=$($_cc --version | head -n1)
4703         _depflags='-MMD'
4704         _cflags_speed='-O4'
4705         _cflags_size='-O2'
4706         _flags_filter=cparser_flags
4707     fi
4708
4709     eval ${pfx}_type=\$_type
4710     eval ${pfx}_ident=\$_ident
4711 }
4712
4713 set_ccvars(){
4714     eval ${1}_C=\${_cc_c-\${${1}_C}}
4715     eval ${1}_E=\${_cc_e-\${${1}_E}}
4716     eval ${1}_O=\${_cc_o-\${${1}_O}}
4717
4718     if [ -n "$_depflags" ]; then
4719         eval ${1}_DEPFLAGS=\$_depflags
4720     else
4721         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4722         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4723         eval DEP${1}FLAGS=\$_flags
4724     fi
4725 }
4726
4727 probe_cc cc "$cc" "true"
4728 cflags_filter=$_flags_filter
4729 cflags_speed=$_cflags_speed
4730 cflags_size=$_cflags_size
4731 cflags_noopt=$_cflags_noopt
4732 add_cflags $_flags $_cflags
4733 cc_ldflags=$_ldflags
4734 set_ccvars CC
4735 set_ccvars CXX
4736
4737 probe_cc hostcc "$host_cc"
4738 host_cflags_filter=$_flags_filter
4739 host_cflags_speed=$_cflags_speed
4740 add_host_cflags  $_flags $_cflags
4741 set_ccvars HOSTCC
4742
4743 test -n "$cc_type" && enable $cc_type ||
4744     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4745
4746 : ${as_default:=$cc}
4747 : ${objcc_default:=$cc}
4748 : ${dep_cc_default:=$cc}
4749 : ${ld_default:=$cc}
4750 : ${host_ld_default:=$host_cc}
4751 set_default ar as objcc dep_cc ld ln_s host_ld windres
4752
4753 probe_cc as "$as"
4754 asflags_filter=$_flags_filter
4755 add_asflags $_flags $_cflags
4756 set_ccvars AS
4757
4758 probe_cc objcc "$objcc"
4759 objcflags_filter=$_flags_filter
4760 add_objcflags $_flags $_cflags
4761 set_ccvars OBJC
4762
4763 probe_cc ld "$ld"
4764 ldflags_filter=$_flags_filter
4765 add_ldflags $_flags $_ldflags
4766 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4767 LD_O=${_ld_o-$LD_O}
4768 LD_LIB=${_ld_lib-$LD_LIB}
4769 LD_PATH=${_ld_path-$LD_PATH}
4770
4771 probe_cc hostld "$host_ld"
4772 host_ldflags_filter=$_flags_filter
4773 add_host_ldflags $_flags $_ldflags
4774 HOSTLD_O=${_ld_o-$HOSTLD_O}
4775
4776 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4777     probe_cc depcc "$dep_cc"
4778     CCDEP=${_DEPCMD:-$DEPCMD}
4779     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4780     DEPCCFLAGS=$_flags
4781 fi
4782
4783 if $ar 2>&1 | grep -q Microsoft; then
4784     arflags="-nologo"
4785     ar_o='-out:$@'
4786 elif $ar 2>&1 | grep -q "\[D\] "; then
4787     arflags="rcD"
4788     ar_o='$@'
4789 else
4790     arflags="rc"
4791     ar_o='$@'
4792 fi
4793
4794 add_cflags $extra_cflags
4795 add_cxxflags $extra_cxxflags
4796 add_objcflags $extra_objcflags
4797 add_asflags $extra_cflags
4798
4799 if test -n "$sysroot"; then
4800     case "$cc_type" in
4801         gcc|llvm_gcc|clang)
4802             add_cppflags --sysroot="$sysroot"
4803             add_ldflags --sysroot="$sysroot"
4804         ;;
4805     esac
4806 fi
4807
4808 if test "$cpu" = host; then
4809     enabled cross_compile &&
4810         warn "--cpu=host makes no sense when cross-compiling."
4811
4812     case "$cc_type" in
4813         gcc|llvm_gcc)
4814             check_native(){
4815                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4816                 sed -n "/cc1.*$1=/{
4817                             s/.*$1=\\([^ ]*\\).*/\\1/
4818                             p
4819                             q
4820                         }" $TMPE
4821             }
4822             cpu=$(check_native -march || check_native -mcpu)
4823         ;;
4824         clang)
4825             check_native(){
4826                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4827                 sed -n "/cc1.*-target-cpu /{
4828                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4829                             p
4830                             q
4831                         }" $TMPE
4832             }
4833             cpu=$(check_native -march)
4834         ;;
4835     esac
4836
4837     test "${cpu:-host}" = host &&
4838         die "--cpu=host not supported with compiler $cc"
4839 fi
4840
4841 # Deal with common $arch aliases
4842 case "$arch" in
4843     aarch64|arm64)
4844         arch="aarch64"
4845     ;;
4846     arm*|iPad*|iPhone*)
4847         arch="arm"
4848     ;;
4849     mips*|IP*)
4850         case "$arch" in
4851         *el)
4852             add_cppflags -EL
4853             add_ldflags -EL
4854         ;;
4855         *eb)
4856             add_cppflags -EB
4857             add_ldflags -EB
4858         ;;
4859         esac
4860         arch="mips"
4861     ;;
4862     parisc*|hppa*)
4863         arch="parisc"
4864     ;;
4865     "Power Macintosh"|ppc*|powerpc*)
4866         arch="ppc"
4867     ;;
4868     s390|s390x)
4869         arch="s390"
4870     ;;
4871     sh4|sh)
4872         arch="sh4"
4873     ;;
4874     sun4*|sparc*)
4875         arch="sparc"
4876     ;;
4877     tilegx|tile-gx)
4878         arch="tilegx"
4879     ;;
4880     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4881         arch="x86"
4882     ;;
4883 esac
4884
4885 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4886 enable $arch
4887
4888 # Add processor-specific flags
4889 if enabled aarch64; then
4890
4891     case $cpu in
4892         armv*)
4893             cpuflags="-march=$cpu"
4894         ;;
4895         *)
4896             cpuflags="-mcpu=$cpu"
4897         ;;
4898     esac
4899
4900 elif enabled alpha; then
4901
4902     cpuflags="-mcpu=$cpu"
4903
4904 elif enabled arm; then
4905
4906     check_arm_arch() {
4907         test_cpp_condition stddef.h \
4908             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4909             $cpuflags
4910     }
4911
4912     probe_arm_arch() {
4913         if   check_arm_arch 4;        then echo armv4
4914         elif check_arm_arch 4T;       then echo armv4t
4915         elif check_arm_arch 5;        then echo armv5
4916         elif check_arm_arch 5E;       then echo armv5e
4917         elif check_arm_arch 5T;       then echo armv5t
4918         elif check_arm_arch 5TE;      then echo armv5te
4919         elif check_arm_arch 5TEJ;     then echo armv5te
4920         elif check_arm_arch 6;        then echo armv6
4921         elif check_arm_arch 6J;       then echo armv6j
4922         elif check_arm_arch 6K;       then echo armv6k
4923         elif check_arm_arch 6Z;       then echo armv6z
4924         elif check_arm_arch 6KZ;      then echo armv6zk
4925         elif check_arm_arch 6ZK;      then echo armv6zk
4926         elif check_arm_arch 6T2;      then echo armv6t2
4927         elif check_arm_arch 7;        then echo armv7
4928         elif check_arm_arch 7A  7_A;  then echo armv7-a
4929         elif check_arm_arch 7S;       then echo armv7-a
4930         elif check_arm_arch 7R  7_R;  then echo armv7-r
4931         elif check_arm_arch 7M  7_M;  then echo armv7-m
4932         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4933         elif check_arm_arch 8A  8_A;  then echo armv8-a
4934         fi
4935     }
4936
4937     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4938
4939     case $cpu in
4940         armv*)
4941             cpuflags="-march=$cpu"
4942             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4943         ;;
4944         *)
4945             cpuflags="-mcpu=$cpu"
4946             case $cpu in
4947                 cortex-a*)                               subarch=armv7a  ;;
4948                 cortex-r*)                               subarch=armv7r  ;;
4949                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4950                 arm11*)                                  subarch=armv6   ;;
4951                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4952                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4953                 *)                             subarch=$(probe_arm_arch) ;;
4954             esac
4955         ;;
4956     esac
4957
4958     case "$subarch" in
4959         armv5t*)    enable fast_clz                ;;
4960         armv[6-8]*)
4961             enable fast_clz
4962             disabled fast_unaligned || enable fast_unaligned
4963             ;;
4964     esac
4965
4966 elif enabled avr32; then
4967
4968     case $cpu in
4969         ap7[02]0[0-2])
4970             subarch="avr32_ap"
4971             cpuflags="-mpart=$cpu"
4972         ;;
4973         ap)
4974             subarch="avr32_ap"
4975             cpuflags="-march=$cpu"
4976         ;;
4977         uc3[ab]*)
4978             subarch="avr32_uc"
4979             cpuflags="-mcpu=$cpu"
4980         ;;
4981         uc)
4982             subarch="avr32_uc"
4983             cpuflags="-march=$cpu"
4984         ;;
4985     esac
4986
4987 elif enabled bfin; then
4988
4989     cpuflags="-mcpu=$cpu"
4990
4991 elif enabled mips; then
4992
4993     cpuflags="-march=$cpu"
4994
4995     if [ "$cpu" != "generic" ]; then
4996         disable mips32r2
4997         disable mips32r5
4998         disable mips64r2
4999         disable mips32r6
5000         disable mips64r6
5001         disable loongson2
5002         disable loongson3
5003
5004         case $cpu in
5005             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
5006                 enable mips32r2
5007                 disable msa
5008             ;;
5009             p5600|i6400|p6600)
5010                 disable mipsdsp
5011                 disable mipsdspr2
5012             ;;
5013             loongson*)
5014                 enable loongson2
5015                 enable loongson3
5016                 enable local_aligned
5017                 enable simd_align_16
5018                 enable fast_64bit
5019                 enable fast_clz
5020                 enable fast_cmov
5021                 enable fast_unaligned
5022                 disable aligned_stack
5023                 disable mipsdsp
5024                 disable mipsdspr2
5025                 # When gcc version less than 5.3.0, add -fno-expensive-optimizations flag.
5026                 if [ $cc == gcc ]; then
5027                     gcc_version=$(gcc -dumpversion)
5028                     if [ "$(echo "$gcc_version 5.3.0" | tr " " "\n" | sort -rV | head -n 1)" == "$gcc_version" ]; then
5029                         expensive_optimization_flag=""
5030                     else
5031                         expensive_optimization_flag="-fno-expensive-optimizations"
5032                     fi
5033                 fi
5034                 case $cpu in
5035                     loongson3*)
5036                         cpuflags="-march=loongson3a -mhard-float $expensive_optimization_flag"
5037                     ;;
5038                     loongson2e)
5039                         cpuflags="-march=loongson2e -mhard-float $expensive_optimization_flag"
5040                     ;;
5041                     loongson2f)
5042                         cpuflags="-march=loongson2f -mhard-float $expensive_optimization_flag"
5043                     ;;
5044                 esac
5045             ;;
5046             *)
5047                 # Unknown CPU. Disable everything.
5048                 warn "unknown CPU. Disabling all MIPS optimizations."
5049                 disable mipsfpu
5050                 disable mipsdsp
5051                 disable mipsdspr2
5052                 disable msa
5053                 disable mmi
5054             ;;
5055         esac
5056
5057         case $cpu in
5058             24kc)
5059                 disable mipsfpu
5060                 disable mipsdsp
5061                 disable mipsdspr2
5062             ;;
5063             24kf*)
5064                 disable mipsdsp
5065                 disable mipsdspr2
5066             ;;
5067             24kec|34kc|1004kc)
5068                 disable mipsfpu
5069                 disable mipsdspr2
5070             ;;
5071             24kef*|34kf*|1004kf*)
5072                 disable mipsdspr2
5073             ;;
5074             74kc)
5075                 disable mipsfpu
5076             ;;
5077             p5600)
5078                 enable mips32r5
5079                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
5080             ;;
5081             i6400)
5082                 enable mips64r6
5083                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
5084             ;;
5085             p6600)
5086                 enable mips64r6
5087                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
5088             ;;
5089         esac
5090     else
5091         # We do not disable anything. Is up to the user to disable the unwanted features.
5092         warn 'generic cpu selected'
5093     fi
5094
5095 elif enabled ppc; then
5096
5097     disable ldbrx
5098
5099     case $(tolower $cpu) in
5100         601|ppc601|powerpc601)
5101             cpuflags="-mcpu=601"
5102             disable altivec
5103         ;;
5104         603*|ppc603*|powerpc603*)
5105             cpuflags="-mcpu=603"
5106             disable altivec
5107         ;;
5108         604*|ppc604*|powerpc604*)
5109             cpuflags="-mcpu=604"
5110             disable altivec
5111         ;;
5112         g3|75*|ppc75*|powerpc75*)
5113             cpuflags="-mcpu=750"
5114             disable altivec
5115         ;;
5116         g4|745*|ppc745*|powerpc745*)
5117             cpuflags="-mcpu=7450"
5118             disable vsx
5119         ;;
5120         74*|ppc74*|powerpc74*)
5121             cpuflags="-mcpu=7400"
5122             disable vsx
5123         ;;
5124         g5|970|ppc970|powerpc970)
5125             cpuflags="-mcpu=970"
5126             disable vsx
5127         ;;
5128         power[3-6]*)
5129             cpuflags="-mcpu=$cpu"
5130             disable vsx
5131         ;;
5132         power[7-8]*)
5133             cpuflags="-mcpu=$cpu"
5134         ;;
5135         cell)
5136             cpuflags="-mcpu=cell"
5137             enable ldbrx
5138             disable vsx
5139         ;;
5140         e500mc)
5141             cpuflags="-mcpu=e500mc"
5142             disable altivec
5143         ;;
5144         e500v2)
5145             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
5146             disable altivec
5147             disable dcbzl
5148         ;;
5149         e500)
5150             cpuflags="-mcpu=8540 -mhard-float"
5151             disable altivec
5152             disable dcbzl
5153         ;;
5154     esac
5155
5156 elif enabled sparc; then
5157
5158     case $cpu in
5159         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
5160             cpuflags="-mcpu=$cpu"
5161         ;;
5162         ultrasparc*|niagara[234])
5163             cpuflags="-mcpu=$cpu"
5164         ;;
5165     esac
5166
5167 elif enabled x86; then
5168
5169     case $cpu in
5170         i[345]86|pentium)
5171             cpuflags="-march=$cpu"
5172             disable i686
5173             disable mmx
5174         ;;
5175         # targets that do NOT support nopl and conditional mov (cmov)
5176         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
5177             cpuflags="-march=$cpu"
5178             disable i686
5179         ;;
5180         # targets that do support nopl and conditional mov (cmov)
5181         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
5182         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
5183         |amdfam10|barcelona|b[dt]ver*|znver*)
5184             cpuflags="-march=$cpu"
5185             enable i686
5186             enable fast_cmov
5187         ;;
5188         # targets that do support conditional mov but on which it's slow
5189         pentium4|pentium4m|prescott|nocona)
5190             cpuflags="-march=$cpu"
5191             enable i686
5192             disable fast_cmov
5193         ;;
5194     esac
5195
5196 fi
5197
5198 if [ "$cpu" != generic ]; then
5199     add_cflags  $cpuflags
5200     add_asflags $cpuflags
5201     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
5202 fi
5203
5204 # compiler sanity check
5205 test_exec <<EOF
5206 int main(void){ return 0; }
5207 EOF
5208 if test "$?" != 0; then
5209     echo "$cc is unable to create an executable file."
5210     if test -z "$cross_prefix" && ! enabled cross_compile ; then
5211         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
5212         echo "Only do this if you know what cross compiling means."
5213     fi
5214     die "C compiler test failed."
5215 fi
5216
5217 add_cppflags -D_ISOC99_SOURCE
5218 add_cxxflags -D__STDC_CONSTANT_MACROS
5219 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
5220
5221 # some compilers silently accept -std=c11, so we also need to check that the
5222 # version macro is defined properly
5223 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
5224     add_cflags -std=c11 ||
5225     check_cflags -std=c99
5226
5227 check_cppflags -D_FILE_OFFSET_BITS=64
5228 check_cppflags -D_LARGEFILE_SOURCE
5229
5230 add_host_cppflags -D_ISOC99_SOURCE
5231 check_host_cflags -std=c99
5232 check_host_cflags -Wall
5233 check_host_cflags $host_cflags_speed
5234
5235 check_64bit(){
5236     arch32=$1
5237     arch64=$2
5238     expr=${3:-'sizeof(void *) > 4'}
5239     test_code cc "" "int test[2*($expr) - 1]" &&
5240         subarch=$arch64 || subarch=$arch32
5241     enable $subarch
5242 }
5243
5244 case "$arch" in
5245     aarch64|alpha|ia64)
5246         enabled shared && enable_weak pic
5247     ;;
5248     mips)
5249         check_64bit mips mips64 '_MIPS_SIM > 1'
5250         enabled shared && enable_weak pic
5251     ;;
5252     parisc)
5253         check_64bit parisc parisc64
5254         enabled shared && enable_weak pic
5255     ;;
5256     ppc)
5257         check_64bit ppc ppc64
5258         enabled shared && enable_weak pic
5259     ;;
5260     s390)
5261         check_64bit s390 s390x
5262         enabled shared && enable_weak pic
5263     ;;
5264     sparc)
5265         check_64bit sparc sparc64
5266         enabled shared && enable_weak pic
5267     ;;
5268     x86)
5269         check_64bit x86_32 x86_64
5270         # Treat x32 as x64 for now. Note it also needs pic if shared
5271         test "$subarch" = "x86_32" && test_cpp_condition stddef.h 'defined(__x86_64__)' &&
5272             subarch=x86_64 && enable x86_64 && disable x86_32
5273         if enabled x86_64; then
5274             enabled shared && enable_weak pic
5275             objformat=elf64
5276         fi
5277     ;;
5278 esac
5279
5280 # OS specific
5281 case $target_os in
5282     aix)
5283         SHFLAGS=-shared
5284         add_cppflags '-I\$(SRC_PATH)/compat/aix'
5285         enabled shared && add_ldflags -Wl,-brtl
5286         arflags='-Xany -r -c'
5287         striptype=""
5288         ;;
5289     android)
5290         disable symver
5291         enable section_data_rel_ro
5292         add_cflags -fPIE
5293         add_ldexeflags -fPIE -pie
5294         SLIB_INSTALL_NAME='$(SLIBNAME)'
5295         SLIB_INSTALL_LINKS=
5296         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
5297         ;;
5298     haiku)
5299         prefix_default="/boot/common"
5300         network_extralibs="-lnetwork"
5301         host_extralibs=
5302         ;;
5303     sunos)
5304         SHFLAGS='-shared -Wl,-h,$$(@F)'
5305         enabled x86 && append SHFLAGS -mimpure-text
5306         network_extralibs="-lsocket -lnsl"
5307         add_cppflags -D__EXTENSIONS__
5308         # When using suncc to build, the Solaris linker will mark
5309         # an executable with each instruction set encountered by
5310         # the Solaris assembler.  As our libraries contain their own
5311         # guards for processor-specific code, instead suppress
5312         # generation of the HWCAPS ELF section on Solaris x86 only.
5313         enabled_all suncc x86 &&
5314             echo "hwcap_1 = OVERRIDE;" > mapfile &&
5315             add_ldflags -Wl,-M,mapfile
5316         nm_default='nm -P -g'
5317         striptype=""
5318         version_script='-M'
5319         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
5320         ;;
5321     netbsd)
5322         disable symver
5323         oss_indev_extralibs="-lossaudio"
5324         oss_outdev_extralibs="-lossaudio"
5325         enabled gcc || check_ldflags -Wl,-zmuldefs
5326         ;;
5327     openbsd|bitrig)
5328         disable symver
5329         enable section_data_rel_ro
5330         striptype=""
5331         SHFLAGS='-shared'
5332         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
5333         SLIB_INSTALL_LINKS=
5334         oss_indev_extralibs="-lossaudio"
5335         oss_outdev_extralibs="-lossaudio"
5336         ;;
5337     dragonfly)
5338         disable symver
5339         ;;
5340     freebsd)
5341         ;;
5342     bsd/os)
5343         add_extralibs -lpoll -lgnugetopt
5344         strip="strip -d"
5345         ;;
5346     darwin)
5347         enabled ppc && add_asflags -force_cpusubtype_ALL
5348         install_name_dir_default='$(SHLIBDIR)'
5349         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
5350         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
5351         strip="${strip} -x"
5352         add_ldflags -Wl,-dynamic,-search_paths_first
5353         check_cflags -Werror=partial-availability
5354         SLIBSUF=".dylib"
5355         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
5356         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
5357         enabled x86_64 && objformat="macho64" || objformat="macho32"
5358         enabled_any pic shared x86_64 ||
5359             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
5360         check_headers dispatch/dispatch.h &&
5361             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
5362         if test -n "$sysroot"; then
5363             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
5364             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
5365         fi
5366         version_script='-exported_symbols_list'
5367         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
5368         # Workaround for Xcode 11 -fstack-check bug
5369         if enabled clang; then
5370             clang_version=$($cc -dumpversion)
5371             test ${clang_version%%.*} -eq 11 && add_cflags -fno-stack-check
5372         fi
5373         ;;
5374     msys*)
5375         die "Native MSYS builds are discouraged, please use the MINGW environment."
5376         ;;
5377     mingw32*|mingw64*)
5378         target_os=mingw32
5379         LIBTARGET=i386
5380         if enabled x86_64; then
5381             LIBTARGET="i386:x86-64"
5382         elif enabled arm; then
5383             LIBTARGET="arm"
5384         elif enabled aarch64; then
5385             LIBTARGET="arm64"
5386         fi
5387         if enabled shared; then
5388             # Cannot build both shared and static libs when using dllimport.
5389             disable static
5390         fi
5391         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5392         enabled x86_32 && check_ldflags -Wl,--large-address-aware
5393         shlibdir_default="$bindir_default"
5394         SLIBPREF=""
5395         SLIBSUF=".dll"
5396         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5397         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5398         if test_cmd lib.exe -list; then
5399             SLIB_EXTRA_CMD=-'lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5400             if enabled x86_64; then
5401                 LIBTARGET=x64
5402             fi
5403         else
5404             SLIB_EXTRA_CMD=-'$(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
5405         fi
5406         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5407         SLIB_INSTALL_LINKS=
5408         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5409         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5410         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5411         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--disable-auto-image-base $$(@:$(SLIBSUF)=.def)'
5412         enabled x86_64 && objformat="win64" || objformat="win32"
5413         dlltool="${cross_prefix}dlltool"
5414         ranlib=:
5415         enable dos_paths
5416         check_ldflags -Wl,--nxcompat,--dynamicbase
5417         # Lets work around some stupidity in binutils.
5418         # ld will strip relocations from executables even though we need them
5419         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
5420         # however ld then forgets what the entry point should be (oops) so we
5421         # have to manually (re)set it.
5422         if enabled x86_32; then
5423             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
5424         elif enabled x86_64; then
5425             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
5426             check_ldflags -Wl,--high-entropy-va # binutils 2.25
5427             # Set image base >4GB for extra entropy with HEASLR
5428             add_ldexeflags -Wl,--image-base,0x140000000
5429             append SHFLAGS -Wl,--image-base,0x180000000
5430         fi
5431         ;;
5432     win32|win64)
5433         disable symver
5434         if enabled shared; then
5435             # Link to the import library instead of the normal static library
5436             # for shared libs.
5437             LD_LIB='%.lib'
5438             # Cannot build both shared and static libs with MSVC or icl.
5439             disable static
5440         fi
5441         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
5442         shlibdir_default="$bindir_default"
5443         SLIBPREF=""
5444         SLIBSUF=".dll"
5445         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5446         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5447         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5448         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5449         SLIB_INSTALL_LINKS=
5450         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5451         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5452         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5453         enabled x86_64 && objformat="win64" || objformat="win32"
5454         ranlib=:
5455         enable dos_paths
5456         ;;
5457     cygwin*)
5458         target_os=cygwin
5459         shlibdir_default="$bindir_default"
5460         SLIBPREF="cyg"
5461         SLIBSUF=".dll"
5462         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5463         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5464         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5465         SLIB_INSTALL_LINKS=
5466         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5467         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5468         enabled x86_64 && objformat="win64" || objformat="win32"
5469         enable dos_paths
5470         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5471         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5472         ;;
5473     *-dos|freedos|opendos)
5474         network_extralibs="-lsocket"
5475         objformat="coff"
5476         enable dos_paths
5477         ;;
5478     linux)
5479         enable section_data_rel_ro
5480         enabled_any arm aarch64 && enable_weak linux_perf
5481         ;;
5482     irix*)
5483         target_os=irix
5484         ranlib="echo ignoring ranlib"
5485         ;;
5486     os/2*)
5487         strip="lxlite -CS"
5488         striptype=""
5489         objformat="aout"
5490         add_cppflags -D_GNU_SOURCE
5491         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5492         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5493         LIBSUF="_s.a"
5494         SLIBPREF=""
5495         SLIBSUF=".dll"
5496         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5497         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5498         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5499             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5500             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5501             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5502             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5503         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5504             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5505         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5506         SLIB_INSTALL_LINKS=
5507         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5508         enable dos_paths
5509         enable_weak os2threads
5510         ;;
5511     gnu/kfreebsd)
5512         add_cppflags -D_BSD_SOURCE
5513         ;;
5514     gnu)
5515         ;;
5516     qnx)
5517         add_cppflags -D_QNX_SOURCE
5518         network_extralibs="-lsocket"
5519         ;;
5520     symbian)
5521         SLIBSUF=".dll"
5522         enable dos_paths
5523         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5524         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5525         add_ldflags -Wl,--target1-abs,--no-undefined \
5526                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5527                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5528         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5529                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5530                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5531         ;;
5532     minix)
5533         ;;
5534     none)
5535         ;;
5536     *)
5537         die "Unknown OS '$target_os'."
5538         ;;
5539 esac
5540
5541 # test if creating links works
5542 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5543 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5544 mkdir "$link_dest"
5545 $ln_s "$link_dest" "$link_name"
5546 touch "$link_dest/test_file"
5547 if [ "$source_path" != "." ] && [ "$source_path" != "src" ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5548     # create link to source path
5549     [ -e src ] && rm src
5550     $ln_s "$source_path" src
5551     source_link=src
5552 else
5553     # creating directory links doesn't work
5554     # fall back to using the full source path
5555     source_link="$source_path"
5556 fi
5557 # cleanup
5558 rm -r "$link_dest"
5559 rm -r "$link_name"
5560
5561 # determine libc flavour
5562
5563 probe_libc(){
5564     pfx=$1
5565     pfx_no_=${pfx%_}
5566     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5567     if test_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5568         eval ${pfx}libc_type=uclibc
5569         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5570     elif test_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5571         eval ${pfx}libc_type=glibc
5572         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5573     # MinGW headers can be installed on Cygwin, so check for newlib first.
5574     elif test_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5575         eval ${pfx}libc_type=newlib
5576         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5577     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5578     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5579         eval ${pfx}libc_type=mingw64
5580         if test_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5581             add_compat msvcrt/snprintf.o
5582             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5583         fi
5584         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5585         eval test \$${pfx_no_}cc_type = "gcc" &&
5586             add_${pfx}cppflags -D__printf__=__gnu_printf__
5587         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5588             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5589         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5590     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5591          test_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5592         eval ${pfx}libc_type=mingw32
5593         test_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5594             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5595             die "ERROR: MinGW32 runtime version must be >= 3.15."
5596         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5597         test_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5598             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5599         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5600             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5601         eval test \$${pfx_no_}cc_type = "gcc" &&
5602             add_${pfx}cppflags -D__printf__=__gnu_printf__
5603         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5604     elif test_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5605         eval ${pfx}libc_type=msvcrt
5606         if test_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5607             if [ "$pfx" = host_ ]; then
5608                 add_host_cppflags -Dsnprintf=_snprintf
5609             else
5610                 add_compat strtod.o strtod=avpriv_strtod
5611                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5612                                              _snprintf=avpriv_snprintf  \
5613                                              vsnprintf=avpriv_vsnprintf
5614             fi
5615         fi
5616         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5617         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5618         # 0x601 by default unless something else is set by the user.
5619         # This can easily lead to us detecting functions only present
5620         # in such new versions and producing binaries requiring windows 7.0.
5621         # Therefore explicitly set the default to Vista unless the user has
5622         # set something else on the command line.
5623         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5624         # family. For these cases, configure is free to use any functions
5625         # found in the SDK headers by default. (Alternatively, we could force
5626         # _WIN32_WINNT to 0x0602 in that case.)
5627         test_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5628             { test_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0600; }
5629 #ifdef WINAPI_FAMILY
5630 #include <winapifamily.h>
5631 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5632 #error not desktop
5633 #endif
5634 #endif
5635 EOF
5636         if [ "$pfx" = "" ]; then
5637             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5638             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5639         fi
5640     elif test_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5641         eval ${pfx}libc_type=klibc
5642     elif test_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5643         eval ${pfx}libc_type=bionic
5644     elif test_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5645         eval ${pfx}libc_type=solaris
5646         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5647     elif test_${pfx}cpp_condition sys/version.h "defined __DJGPP__"; then
5648         eval ${pfx}libc_type=djgpp
5649         add_cppflags -U__STRICT_ANSI__
5650         add_cflags "-include $source_path/compat/djgpp/math.h"
5651         add_compat djgpp/math.o
5652     fi
5653     test_${pfx}cc <<EOF
5654 #include <time.h>
5655 void *v = localtime_r;
5656 EOF
5657 test "$?" != 0 && test_${pfx}cc -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 <<EOF && add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5658 #include <time.h>
5659 void *v = localtime_r;
5660 EOF
5661
5662     eval test -n "\${${pfx}libc_type}" && enable ${pfx}libc_${libc_type}
5663 }
5664
5665 probe_libc
5666 probe_libc host_
5667
5668 # hacks for compiler/libc/os combinations
5669
5670 case $libc_type in
5671     bionic)
5672         add_compat strtod.o strtod=avpriv_strtod
5673         ;;
5674 esac
5675
5676 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5677     add_cppflags '-I\$(SRC_PATH)/compat/float'
5678
5679 test_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5680
5681 set_default libdir
5682 : ${shlibdir_default:="$libdir"}
5683 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5684
5685 set_default $PATHS_LIST
5686 set_default nm
5687
5688 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5689
5690 enable_weak_pic() {
5691     disabled pic && return
5692     enable pic
5693     add_cppflags -DPIC
5694     case "$target_os" in
5695     mingw*|cygwin*|win*)
5696         ;;
5697     *)
5698         add_cflags -fPIC
5699         add_asflags -fPIC
5700         ;;
5701     esac
5702 }
5703
5704 enabled pic && enable_weak_pic
5705
5706 test_cc <<EOF || die "Symbol mangling check failed."
5707 int ff_extern;
5708 EOF
5709 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5710 extern_prefix=${sym%%ff_extern*}
5711
5712 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
5713
5714 for restrict_keyword in restrict __restrict__ __restrict ""; do
5715     test_code cc "" "char * $restrict_keyword p" && break
5716 done
5717
5718 check_cc pragma_deprecated "" '_Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"")'
5719
5720 # The global variable ensures the bits appear unchanged in the object file.
5721 test_cc <<EOF || die "endian test failed"
5722 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5723 EOF
5724 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5725
5726 check_cc const_nan math.h "struct { double d; } static const bar[] = { { NAN } }"
5727
5728 if ! enabled ppc64 || enabled bigendian; then
5729     disable vsx
5730 fi
5731
5732 check_gas() {
5733     log "check_gas using '$as' as AS"
5734     # :vararg is used on aarch64, arm and ppc altivec
5735     check_as vararg "
5736 .macro m n, y:vararg=0
5737 \n: .int \y
5738 .endm
5739 m x" || return 1
5740     # .altmacro is only used in arm asm
5741     ! enabled arm || check_as gnu_as ".altmacro"
5742 }
5743
5744 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5745     nogas=:
5746     enabled_any arm aarch64 && nogas=die
5747     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5748     as_noop=-v
5749
5750     case $as_type in
5751         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5752         gcc)  gaspp_as_type=gas ;;
5753         *)    gaspp_as_type=$as_type ;;
5754     esac
5755
5756     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5757
5758     test "${as#*gas-preprocessor.pl}" != "$as" ||
5759     test_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5760         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5761
5762     if ! check_gas ; then
5763         as=${gas:=$as}
5764         check_gas || \
5765             $nogas "GNU assembler not found, install/update gas-preprocessor"
5766     fi
5767
5768     check_as as_func ".func test
5769                       .endfunc"
5770 fi
5771
5772 check_inline_asm inline_asm_labels '"1:\n"'
5773
5774 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5775
5776 if enabled aarch64; then
5777     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5778     # internal assembler in clang 3.3 does not support this instruction
5779     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5780     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5781
5782     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5783
5784 elif enabled alpha; then
5785
5786     check_cflags -mieee
5787
5788 elif enabled arm; then
5789
5790     enabled msvc && check_cpp_condition thumb stddef.h "defined _M_ARMT"
5791     test_cpp_condition stddef.h "defined __thumb__" && test_cc <<EOF && enable_weak thumb
5792 float func(float a, float b){ return a+b; }
5793 EOF
5794     enabled thumb && check_cflags -mthumb || check_cflags -marm
5795
5796     if check_cpp_condition vfp_args stddef.h "defined __ARM_PCS_VFP"; then
5797         :
5798     elif check_cpp_condition vfp_args stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5799         :
5800     elif ! test_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5801         case "${cross_prefix:-$cc}" in
5802             *hardfloat*) enable vfp_args; fpabi=vfp ;;
5803             *) check_ld "cc" vfp_args <<EOF && fpabi=vfp || fpabi=soft ;;
5804 __asm__ (".eabi_attribute 28, 1");
5805 int main(void) { return 0; }
5806 EOF
5807         esac
5808         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5809     fi
5810
5811     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5812     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5813     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5814     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5815     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5816     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5817     enabled setend  && check_insn setend  'setend be'
5818
5819     [ $target_os = linux ] || [ $target_os = android ] ||
5820         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5821             $ARCH_EXT_LIST_ARM
5822
5823     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5824
5825     check_as as_arch_directive ".arch armv7-a"
5826     check_as as_dn_directive   "ra .dn d0.i16"
5827     check_as as_fpu_directive  ".fpu neon"
5828
5829     # llvm's integrated assembler supports .object_arch from llvm 3.5
5830     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5831         check_as as_object_arch ".object_arch armv4"
5832
5833     # MS armasm fails to assemble our PIC constructs
5834     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5835
5836 elif enabled mips; then
5837
5838     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5839     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5840     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5841
5842     # Enable minimum ISA based on selected options
5843     if enabled mips64; then
5844         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5845         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5846         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5847     else
5848         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5849         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5850         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5851         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5852     fi
5853
5854     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5855     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5856     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_headers msa.h || disable msa
5857     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5858     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5859     enabled msa && enabled msa2 && check_inline_asm_flags msa2 '"nxbits.any.b $w0, $w0"' '-mmsa2' && check_headers msa2.h || disable msa2
5860
5861     if enabled bigendian && enabled msa; then
5862         disable msa
5863     fi
5864
5865 elif enabled parisc; then
5866
5867     if enabled gcc; then
5868         case $($cc -dumpversion) in
5869             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5870         esac
5871     fi
5872
5873 elif enabled ppc; then
5874
5875     enable local_aligned
5876
5877     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5878     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5879     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5880     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5881
5882     if enabled altivec; then
5883         check_cflags -maltivec -mabi=altivec
5884
5885         # check if our compiler supports Motorola AltiVec C API
5886         check_cc altivec altivec.h "vector signed int v1 = (vector signed int) { 0 };
5887                                     vector signed int v2 = (vector signed int) { 1 };
5888                                     v1 = vec_add(v1, v2);"
5889
5890         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5891     fi
5892
5893     if enabled vsx; then
5894         check_cflags -mvsx &&
5895         check_cc vsx altivec.h "int v[4] = { 0 };
5896                                 vector signed int v1 = vec_vsx_ld(0, v);"
5897     fi
5898
5899     if enabled power8; then
5900         check_cpp_condition power8 "altivec.h" "defined(_ARCH_PWR8)"
5901     fi
5902
5903 elif enabled x86; then
5904
5905     check_builtin rdtsc    intrin.h   "__rdtsc()"
5906     check_builtin mm_empty mmintrin.h "_mm_empty()"
5907
5908     enable local_aligned
5909
5910     # check whether EBP is available on x86
5911     # As 'i' is stored on the stack, this program will crash
5912     # if the base pointer is used to access it because the
5913     # base pointer is cleared in the inline assembly code.
5914     check_exec_crash <<EOF && enable ebp_available
5915 volatile int i=0;
5916 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5917 return i;
5918 EOF
5919
5920     # check whether EBX is available on x86
5921     check_inline_asm ebx_available '""::"b"(0)' &&
5922         check_inline_asm ebx_available '"":::"%ebx"'
5923
5924     # check whether xmm clobbers are supported
5925     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5926
5927     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5928         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5929
5930     # check whether binutils is new enough to compile SSSE3/MMXEXT
5931     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5932     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5933
5934     probe_x86asm(){
5935         x86asmexe_probe=$1
5936         if test_cmd $x86asmexe_probe -v; then
5937             x86asmexe=$x86asmexe_probe
5938             x86asm_type=nasm
5939             x86asm_debug="-g -F dwarf"
5940             X86ASMDEP=
5941             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5942         elif test_cmd $x86asmexe_probe --version; then
5943             x86asmexe=$x86asmexe_probe
5944             x86asm_type=yasm
5945             x86asm_debug="-g dwarf2"
5946             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
5947             X86ASM_DEPFLAGS=
5948         fi
5949         check_x86asm x86asm "movbe ecx, [5]"
5950     }
5951
5952     if ! disabled_any asm mmx x86asm; then
5953         disable x86asm
5954         for program in $x86asmexe nasm yasm; do
5955             probe_x86asm $program && break
5956         done
5957         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
5958         X86ASMFLAGS="-f $objformat"
5959         enabled pic               && append X86ASMFLAGS "-DPIC"
5960         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
5961         case "$objformat" in
5962             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
5963         esac
5964
5965         enabled avx512 && check_x86asm avx512_external "vmovdqa32 [eax]{k1}{z}, zmm0"
5966         enabled avx2   && check_x86asm avx2_external   "vextracti128 xmm0, ymm0, 0"
5967         enabled xop    && check_x86asm xop_external    "vpmacsdd xmm0, xmm1, xmm2, xmm3"
5968         enabled fma4   && check_x86asm fma4_external   "vfmaddps ymm0, ymm1, ymm2, ymm3"
5969         check_x86asm cpunop          "CPU amdnop"
5970     fi
5971
5972     case "$cpu" in
5973         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5974             disable fast_clz
5975         ;;
5976     esac
5977
5978 fi
5979
5980 check_cc intrinsics_neon arm_neon.h "int16x8_t test = vdupq_n_s16(0)"
5981
5982 check_ldflags -Wl,--as-needed
5983 check_ldflags -Wl,-z,noexecstack
5984
5985 if ! disabled network; then
5986     check_func getaddrinfo $network_extralibs
5987     check_func inet_aton $network_extralibs
5988
5989     check_type netdb.h "struct addrinfo"
5990     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5991     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5992     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5993     check_type poll.h "struct pollfd"
5994     check_type netinet/sctp.h "struct sctp_event_subscribe"
5995     check_struct "sys/socket.h" "struct msghdr" msg_flags
5996     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5997     check_type netinet/in.h "struct sockaddr_in6"
5998     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5999     check_type "sys/types.h sys/socket.h" socklen_t
6000
6001     # Prefer arpa/inet.h over winsock2
6002     if check_headers arpa/inet.h ; then
6003         check_func closesocket
6004     elif check_headers winsock2.h ; then
6005         check_func_headers winsock2.h closesocket -lws2 &&
6006             network_extralibs="-lws2" ||
6007         { check_func_headers winsock2.h closesocket -lws2_32 &&
6008             network_extralibs="-lws2_32"; } || disable winsock2_h network
6009         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
6010
6011         check_type ws2tcpip.h socklen_t
6012         check_type ws2tcpip.h "struct addrinfo"
6013         check_type ws2tcpip.h "struct group_source_req"
6014         check_type ws2tcpip.h "struct ip_mreq_source"
6015         check_type ws2tcpip.h "struct ipv6_mreq"
6016         check_type winsock2.h "struct pollfd"
6017         check_struct winsock2.h "struct sockaddr" sa_len
6018         check_type ws2tcpip.h "struct sockaddr_in6"
6019         check_type ws2tcpip.h "struct sockaddr_storage"
6020     else
6021         disable network
6022     fi
6023 fi
6024
6025 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
6026 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
6027 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
6028 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
6029 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
6030 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
6031 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
6032
6033 case "$custom_allocator" in
6034     jemalloc)
6035         # jemalloc by default does not use a prefix
6036         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
6037     ;;
6038     tcmalloc)
6039         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
6040         malloc_prefix=tc_
6041     ;;
6042 esac
6043
6044 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
6045 check_func  ${malloc_prefix}memalign            && enable memalign
6046 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
6047
6048 check_func  access
6049 check_func_headers stdlib.h arc4random
6050 check_lib   clock_gettime time.h clock_gettime || check_lib clock_gettime time.h clock_gettime -lrt
6051 check_func  fcntl
6052 check_func  fork
6053 check_func  gethrtime
6054 check_func  getopt
6055 check_func  getrusage
6056 check_func  gettimeofday
6057 check_func  isatty
6058 check_func  mkstemp
6059 check_func  mmap
6060 check_func  mprotect
6061 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
6062 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
6063 check_func  sched_getaffinity
6064 check_func  setrlimit
6065 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
6066 check_func  strerror_r
6067 check_func  sysconf
6068 check_func  sysctl
6069 check_func  usleep
6070
6071 check_func_headers conio.h kbhit
6072 check_func_headers io.h setmode
6073 check_func_headers lzo/lzo1x.h lzo1x_999_compress
6074 check_func_headers mach/mach_time.h mach_absolute_time
6075 check_func_headers stdlib.h getenv
6076 check_func_headers sys/stat.h lstat
6077
6078 check_func_headers windows.h GetModuleHandle
6079 check_func_headers windows.h GetProcessAffinityMask
6080 check_func_headers windows.h GetProcessTimes
6081 check_func_headers windows.h GetStdHandle
6082 check_func_headers windows.h GetSystemTimeAsFileTime
6083 check_func_headers windows.h LoadLibrary
6084 check_func_headers windows.h MapViewOfFile
6085 check_func_headers windows.h PeekNamedPipe
6086 check_func_headers windows.h SetConsoleTextAttribute
6087 check_func_headers windows.h SetConsoleCtrlHandler
6088 check_func_headers windows.h SetDllDirectory
6089 check_func_headers windows.h Sleep
6090 check_func_headers windows.h VirtualAlloc
6091 check_func_headers glob.h glob
6092 enabled xlib &&
6093     check_lib xlib "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
6094
6095 check_headers direct.h
6096 check_headers dirent.h
6097 check_headers dxgidebug.h
6098 check_headers dxva.h
6099 check_headers dxva2api.h -D_WIN32_WINNT=0x0600
6100 check_headers io.h
6101 check_headers linux/perf_event.h
6102 check_headers libcrystalhd/libcrystalhd_if.h
6103 check_headers malloc.h
6104 check_headers net/udplite.h
6105 check_headers poll.h
6106 check_headers sys/param.h
6107 check_headers sys/resource.h
6108 check_headers sys/select.h
6109 check_headers sys/time.h
6110 check_headers sys/un.h
6111 check_headers termios.h
6112 check_headers unistd.h
6113 check_headers valgrind/valgrind.h
6114 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
6115 check_headers windows.h
6116 check_headers X11/extensions/XvMClib.h
6117 check_headers asm/types.h
6118
6119 # it seems there are versions of clang in some distros that try to use the
6120 # gcc headers, which explodes for stdatomic
6121 # so we also check that atomics actually work here
6122 check_builtin stdatomic stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0); foo += bar"
6123
6124 check_lib advapi32 "windows.h"            RegCloseKey          -ladvapi32
6125 check_lib bcrypt   "windows.h bcrypt.h"   BCryptGenRandom      -lbcrypt &&
6126     check_cpp_condition bcrypt bcrypt.h "defined BCRYPT_RNG_ALGORITHM"
6127 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
6128 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
6129 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
6130
6131 check_lib android android/native_window.h ANativeWindow_acquire -landroid
6132 check_lib mediandk "stdint.h media/NdkImage.h" AImage_delete -lmediandk
6133 check_lib camera2ndk "stdbool.h stdint.h camera/NdkCameraManager.h" ACameraManager_create -lcamera2ndk
6134
6135 enabled appkit       && check_apple_framework AppKit
6136 enabled audiotoolbox && check_apple_framework AudioToolbox
6137 enabled avfoundation && check_apple_framework AVFoundation
6138 enabled coreimage    && check_apple_framework CoreImage
6139 enabled videotoolbox && check_apple_framework VideoToolbox
6140
6141 check_apple_framework CoreFoundation
6142 check_apple_framework CoreMedia
6143 check_apple_framework CoreVideo
6144
6145 enabled avfoundation && {
6146     disable coregraphics applicationservices
6147     check_lib coregraphics        CoreGraphics/CoreGraphics.h               CGGetActiveDisplayList "-framework CoreGraphics" ||
6148     check_lib applicationservices ApplicationServices/ApplicationServices.h CGGetActiveDisplayList "-framework ApplicationServices"; }
6149
6150 enabled videotoolbox && {
6151     check_lib coreservices CoreServices/CoreServices.h UTGetOSTypeFromString "-framework CoreServices"
6152     check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_HEVC "-framework CoreMedia"
6153     check_func_headers CoreVideo/CVPixelBuffer.h kCVPixelFormatType_420YpCbCr10BiPlanarVideoRange "-framework CoreVideo"
6154     check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferTransferFunction_SMPTE_ST_2084_PQ "-framework CoreVideo"
6155     check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferTransferFunction_ITU_R_2100_HLG "-framework CoreVideo"
6156     check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferTransferFunction_Linear "-framework CoreVideo"
6157 }
6158
6159 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
6160
6161 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
6162 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
6163 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
6164 check_type "windows.h d3d11.h" "ID3D11VideoContext"
6165 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
6166
6167 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
6168 check_type "vdpau/vdpau.h" "VdpPictureInfoVP9"
6169
6170 if [ -z "$nvccflags" ]; then
6171     nvccflags=$nvccflags_default
6172 fi
6173
6174 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6175     nvccflags="$nvccflags -m64"
6176 else
6177     nvccflags="$nvccflags -m32"
6178 fi
6179
6180 if enabled cuda_nvcc; then
6181     nvccflags="$nvccflags -ptx"
6182 else
6183     nvccflags="$nvccflags -S -nocudalib -nocudainc --cuda-device-only -include ${source_link}/compat/cuda/cuda_runtime.h"
6184     check_nvcc cuda_llvm
6185 fi
6186
6187 if ! disabled ffnvcodec; then
6188     ffnv_hdr_list="ffnvcodec/nvEncodeAPI.h ffnvcodec/dynlink_cuda.h ffnvcodec/dynlink_cuviddec.h ffnvcodec/dynlink_nvcuvid.h"
6189     check_pkg_config ffnvcodec "ffnvcodec >= 9.1.23.1" "$ffnv_hdr_list" "" || \
6190       check_pkg_config ffnvcodec "ffnvcodec >= 9.0.18.3 ffnvcodec < 9.1" "$ffnv_hdr_list" "" || \
6191       check_pkg_config ffnvcodec "ffnvcodec >= 8.2.15.10 ffnvcodec < 8.3" "$ffnv_hdr_list" "" || \
6192       check_pkg_config ffnvcodec "ffnvcodec >= 8.1.24.11 ffnvcodec < 8.2" "$ffnv_hdr_list" ""
6193 fi
6194
6195 check_cpp_condition winrt windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)"
6196
6197 if ! disabled w32threads && ! enabled pthreads; then
6198     check_func_headers "windows.h process.h" _beginthreadex &&
6199         check_type "windows.h" CONDITION_VARIABLE &&
6200         check_type "windows.h" INIT_ONCE &&
6201         enable w32threads || disable w32threads
6202     if ! enabled w32threads && enabled winrt; then
6203         check_func_headers "windows.h" CreateThread &&
6204             enable w32threads || disable w32threads
6205     fi
6206 fi
6207
6208 # check for some common methods of building with pthread support
6209 # do this before the optional library checks as some of them require pthreads
6210 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
6211     if check_lib pthreads pthread.h pthread_join   -pthread &&
6212        check_lib pthreads pthread.h pthread_create -pthread; then
6213         add_cflags -pthread
6214     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
6215          check_lib pthreads pthread.h pthread_create -pthreads; then
6216         add_cflags -pthreads
6217     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
6218          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
6219         add_cflags -ldl -pthread
6220     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
6221          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
6222         :
6223     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
6224          check_lib pthreads pthread.h pthread_create -lpthread; then
6225         :
6226     elif check_func pthread_join && check_func pthread_create; then
6227         enable pthreads
6228     fi
6229     check_cc pthreads "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER"
6230
6231     if enabled pthreads; then
6232         check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
6233         check_func pthread_cancel $pthreads_extralibs
6234     fi
6235 fi
6236
6237 enabled  zlib && { check_pkg_config zlib zlib "zlib.h" zlibVersion ||
6238                    check_lib zlib   zlib.h      zlibVersion    -lz; }
6239 enabled bzlib && check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
6240 enabled  lzma && check_lib lzma   lzma.h lzma_version_number -llzma
6241
6242 # On some systems dynamic loading requires no extra linker flags
6243 check_lib libdl dlfcn.h "dlopen dlsym" || check_lib libdl dlfcn.h "dlopen dlsym" -ldl
6244
6245 check_lib libm math.h sin -lm
6246
6247 atan2f_args=2
6248 copysign_args=2
6249 hypot_args=2
6250 ldexpf_args=2
6251 powf_args=2
6252
6253 for func in $MATH_FUNCS; do
6254     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
6255 done
6256
6257 for func in $COMPLEX_FUNCS; do
6258     eval check_complexfunc $func \${${func}_args:-1}
6259 done
6260
6261 # these are off by default, so fail if requested and not available
6262 enabled avisynth          && require_headers "avisynth/avisynth_c.h"
6263 enabled cuda_nvcc         && { check_nvcc cuda_nvcc || die "ERROR: failed checking for nvcc."; }
6264 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
6265 enabled decklink          && { require_headers DeckLinkAPI.h &&
6266                                { test_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a090500" || die "ERROR: Decklink API version must be >= 10.9.5."; } }
6267 enabled frei0r            && require_headers "frei0r.h dlfcn.h"
6268 enabled gmp               && require gmp gmp.h mpz_export -lgmp
6269 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
6270 enabled jni               && { [ $target_os = "android" ] && check_headers jni.h && enabled pthreads || die "ERROR: jni not found"; }
6271 enabled ladspa            && require_headers "ladspa.h dlfcn.h"
6272 enabled libaom            && require_pkg_config libaom "aom >= 1.0.0" aom/aom_codec.h aom_codec_version
6273 enabled libaribb24        && { check_pkg_config libaribb24 "aribb24 > 1.0.3" "aribb24/aribb24.h" arib_instance_new ||
6274                                { enabled gpl && require_pkg_config libaribb24 aribb24 "aribb24/aribb24.h" arib_instance_new; } ||
6275                                die "ERROR: libaribb24 requires version higher than 1.0.3 or --enable-gpl."; }
6276 enabled lv2               && require_pkg_config lv2 lilv-0 "lilv/lilv.h" lilv_world_new
6277 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
6278 enabled libass            && require_pkg_config libass libass ass/ass.h ass_library_init
6279 enabled libbluray         && require_pkg_config libbluray libbluray libbluray/bluray.h bd_open
6280 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
6281 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
6282                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
6283                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
6284 enabled libcaca           && require_pkg_config libcaca caca caca.h caca_create_canvas
6285 enabled libcodec2         && require libcodec2 codec2/codec2.h codec2_create -lcodec2
6286 enabled libdav1d          && require_pkg_config libdav1d "dav1d >= 0.4.0" "dav1d/dav1d.h" dav1d_version
6287 enabled libdavs2          && require_pkg_config libdavs2 "davs2 >= 1.6.0" davs2.h davs2_decoder_open
6288 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
6289 enabled libdrm            && require_pkg_config libdrm libdrm xf86drm.h drmGetVersion
6290 enabled libfdk_aac        && { check_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
6291                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
6292                                  warn "using libfdk without pkg-config"; } }
6293 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"
6294 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
6295 enabled fontconfig        && enable libfontconfig
6296 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
6297 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
6298 enabled libfribidi        && require_pkg_config libfribidi fribidi fribidi.h fribidi_version_info
6299 enabled libglslang        && require_cpp libglslang glslang/SPIRV/GlslangToSpv.h "glslang::TIntermediate*" -lglslang -lOSDependent -lHLSL -lOGLCompiler -lSPVRemapper -lSPIRV -lSPIRV-Tools-opt -lSPIRV-Tools -lpthread -lstdc++
6300 enabled libgme            && { check_pkg_config libgme libgme gme/gme.h gme_new_emu ||
6301                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }
6302 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
6303                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
6304                                done || die "ERROR: libgsm not found"; }
6305 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc $pthreads_extralibs
6306 enabled libklvanc         && require libklvanc libklvanc/vanc.h klvanc_context_create -lklvanc
6307 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
6308 enabled liblensfun        && require_pkg_config liblensfun lensfun lensfun.h lf_db_new
6309 # While it may appear that require is being used as a pkg-config
6310 # fallback for libmfx, it is actually being used to detect a different
6311 # installation route altogether.  If libmfx is installed via the Intel
6312 # Media SDK or Intel Media Server Studio, these don't come with
6313 # pkg-config support.  Instead, users should make sure that the build
6314 # can find the libraries and headers through other means.
6315 enabled libmfx            && { check_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit ||
6316                                { require libmfx "mfx/mfxvideo.h" MFXInit "-llibmfx $advapi32_extralibs" && warn "using libmfx without pkg-config"; } }
6317 if enabled libmfx; then
6318    check_cc MFX_CODEC_VP9 "mfx/mfxvp9.h mfx/mfxstructures.h" "MFX_CODEC_VP9"
6319 fi
6320
6321 enabled libmodplug        && require_pkg_config libmodplug libmodplug libmodplug/modplug.h ModPlug_Load
6322 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame $libm_extralibs
6323 enabled libmysofa         && { check_pkg_config libmysofa libmysofa mysofa.h mysofa_neighborhood_init_withstepdefine ||
6324                                require libmysofa mysofa.h mysofa_neighborhood_init_withstepdefine -lmysofa $zlib_extralibs; }
6325 enabled libnpp            && { check_lib libnpp npp.h nppGetLibVersion -lnppig -lnppicc -lnppc -lnppidei ||
6326                                check_lib libnpp npp.h nppGetLibVersion -lnppi -lnppc -lnppidei ||
6327                                die "ERROR: libnpp not found"; }
6328 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
6329 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
6330 enabled libopencv         && { check_headers opencv2/core/core_c.h &&
6331                                { check_pkg_config libopencv opencv opencv2/core/core_c.h cvCreateImageHeader ||
6332                                  require libopencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
6333                                require_pkg_config libopencv opencv opencv/cxcore.h cvCreateImageHeader; }
6334 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
6335 enabled libopenjpeg       && { check_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version ||
6336                                { require_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } }
6337 enabled libopenmpt        && require_pkg_config libopenmpt "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create -lstdc++ && append libopenmpt_extralibs "-lstdc++"
6338 enabled libopus           && {
6339     enabled libopus_decoder && {
6340         require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
6341     }
6342     enabled libopus_encoder && {
6343         require_pkg_config libopus opus opus_multistream.h opus_multistream_surround_encoder_create
6344     }
6345 }
6346 enabled libpulse          && require_pkg_config libpulse libpulse pulse/pulseaudio.h pa_context_new
6347 enabled librabbitmq       && require_pkg_config librabbitmq "librabbitmq >= 0.7.1" amqp.h amqp_new_connection
6348 enabled librav1e          && require_pkg_config librav1e "rav1e >= 0.1.0" rav1e.h rav1e_context_new
6349 enabled librsvg           && require_pkg_config librsvg librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
6350 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
6351 enabled librubberband     && require_pkg_config librubberband "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new -lstdc++ && append librubberband_extralibs "-lstdc++"
6352 enabled libshine          && require_pkg_config libshine shine shine/layer3.h shine_encode_buffer
6353 enabled libsmbclient      && { check_pkg_config libsmbclient smbclient libsmbclient.h smbc_init ||
6354                                require libsmbclient libsmbclient.h smbc_init -lsmbclient; }
6355 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy -lstdc++
6356 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
6357 enabled libssh            && require_pkg_config libssh libssh libssh/sftp.h sftp_init
6358 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init
6359 enabled libsrt            && require_pkg_config libsrt "srt >= 1.3.0" srt/srt.h srt_socket
6360 enabled libtensorflow     && require libtensorflow tensorflow/c/c_api.h TF_Version -ltensorflow
6361 enabled libtesseract      && require_pkg_config libtesseract tesseract tesseract/capi.h TessBaseAPICreate
6362 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
6363 enabled libtls            && require_pkg_config libtls libtls tls.h tls_configure
6364 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
6365                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
6366                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
6367 enabled libv4l2           && require_pkg_config libv4l2 libv4l2 libv4l2.h v4l2_ioctl
6368 enabled libvidstab        && require_pkg_config libvidstab "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
6369 enabled libvmaf           && require_pkg_config libvmaf "libvmaf >= 1.3.9" libvmaf.h compute_vmaf
6370 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
6371 enabled libvorbis         && require_pkg_config libvorbis vorbis vorbis/codec.h vorbis_info_init &&
6372                              require_pkg_config libvorbisenc vorbisenc vorbis/vorbisenc.h vorbis_encode_init
6373
6374 enabled libvpx            && {
6375     enabled libvpx_vp8_decoder && {
6376         check_pkg_config libvpx_vp8_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
6377             check_lib libvpx_vp8_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp8_dx VPX_IMG_FMT_HIGHBITDEPTH" "-lvpx $libm_extralibs $pthreads_extralibs"
6378     }
6379     enabled libvpx_vp8_encoder && {
6380         check_pkg_config libvpx_vp8_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
6381             check_lib libvpx_vp8_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp8_cx VPX_IMG_FMT_HIGHBITDEPTH" "-lvpx $libm_extralibs $pthreads_extralibs"
6382     }
6383     enabled libvpx_vp9_decoder && {
6384         check_pkg_config libvpx_vp9_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
6385             check_lib libvpx_vp9_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx VPX_IMG_FMT_HIGHBITDEPTH" "-lvpx $libm_extralibs $pthreads_extralibs"
6386     }
6387     enabled libvpx_vp9_encoder && {
6388         check_pkg_config libvpx_vp9_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
6389             check_lib libvpx_vp9_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VPX_IMG_FMT_HIGHBITDEPTH" "-lvpx $libm_extralibs $pthreads_extralibs"
6390     }
6391     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
6392         die "libvpx enabled but no supported decoders found"
6393     fi
6394 }
6395
6396 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
6397 enabled libwebp           && {
6398     enabled libwebp_encoder      && require_pkg_config libwebp "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
6399     enabled libwebp_anim_encoder && check_pkg_config libwebp_anim_encoder "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit; }
6400 enabled libx264           && { check_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode ||
6401                                { require libx264 "stdint.h x264.h" x264_encoder_encode "-lx264 $pthreads_extralibs $libm_extralibs" &&
6402                                  warn "using libx264 without pkg-config"; } } &&
6403                              require_cpp_condition libx264 x264.h "X264_BUILD >= 118" &&
6404                              check_cpp_condition libx262 x264.h "X264_MPEG2"
6405 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
6406                              require_cpp_condition libx265 x265.h "X265_BUILD >= 70"
6407 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode "-lxavs $pthreads_extralibs $libm_extralibs"
6408 enabled libxavs2          && require_pkg_config libxavs2 "xavs2 >= 1.3.0" "stdint.h xavs2.h" xavs2_api_get
6409 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
6410 enabled libzimg           && require_pkg_config libzimg "zimg >= 2.7.0" zimg.h zimg_get_api_version
6411 enabled libzmq            && require_pkg_config libzmq "libzmq >= 4.2.1" zmq.h zmq_ctx_new
6412 enabled libzvbi           && require_pkg_config libzvbi zvbi-0.2 libzvbi.h vbi_decoder_new &&
6413                              { test_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
6414                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
6415 enabled libxml2           && require_pkg_config libxml2 libxml-2.0 libxml2/libxml/xmlversion.h xmlCheckVersion
6416 enabled mbedtls           && { check_pkg_config mbedtls mbedtls mbedtls/x509_crt.h mbedtls_x509_crt_init ||
6417                                check_pkg_config mbedtls mbedtls mbedtls/ssl.h mbedtls_ssl_init ||
6418                                check_lib mbedtls mbedtls/ssl.h mbedtls_ssl_init -lmbedtls -lmbedx509 -lmbedcrypto ||
6419                                die "ERROR: mbedTLS not found"; }
6420 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
6421 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
6422                                { ! enabled cross_compile &&
6423                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
6424                                  add_ldflags -L/opt/vc/lib/ &&
6425                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
6426                                die "ERROR: mmal not found" &&
6427                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
6428 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
6429                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
6430                                die "ERROR: openal not found"; } &&
6431                              { test_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
6432                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
6433 enabled opencl            && { check_pkg_config opencl OpenCL CL/cl.h clEnqueueNDRangeKernel ||
6434                                check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
6435                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
6436                                die "ERROR: opencl not found"; } &&
6437                              { test_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
6438                                test_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
6439                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
6440 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
6441                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
6442                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
6443                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
6444                                die "ERROR: opengl not found."
6445                              }
6446 enabled omx_rpi           && { test_code cc OMX_Core.h OMX_IndexConfigBrcmVideoRequestIFrame ||
6447                                { ! enabled cross_compile &&
6448                                  add_cflags -isystem/opt/vc/include/IL &&
6449                                  test_code cc OMX_Core.h OMX_IndexConfigBrcmVideoRequestIFrame; } ||
6450                                die "ERROR: OpenMAX IL headers from raspberrypi/firmware not found"; } &&
6451                              enable omx
6452 enabled omx               && require_headers OMX_Core.h
6453 enabled openssl           && { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
6454                                check_pkg_config openssl openssl openssl/ssl.h SSL_library_init ||
6455                                check_lib openssl openssl/ssl.h OPENSSL_init_ssl -lssl -lcrypto ||
6456                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
6457                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
6458                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
6459                                die "ERROR: openssl not found"; }
6460 enabled pocketsphinx      && require_pkg_config pocketsphinx pocketsphinx pocketsphinx/pocketsphinx.h ps_init
6461 enabled rkmpp             && { require_pkg_config rkmpp rockchip_mpp  rockchip/rk_mpi.h mpp_create &&
6462                                require_pkg_config rockchip_mpp "rockchip_mpp >= 1.3.7" rockchip/rk_mpi.h mpp_create &&
6463                                { enabled libdrm ||
6464                                  die "ERROR: rkmpp requires --enable-libdrm"; }
6465                              }
6466 enabled vapoursynth       && require_pkg_config vapoursynth "vapoursynth-script >= 42" VSScript.h vsscript_init
6467
6468
6469 if enabled gcrypt; then
6470     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
6471     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
6472         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
6473         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
6474         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
6475             die "ERROR: gcrypt not found"
6476         add_cflags $gcrypt_cflags
6477     else
6478         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
6479     fi
6480 fi
6481
6482 if enabled sdl2; then
6483     SDL2_CONFIG="${cross_prefix}sdl2-config"
6484     test_pkg_config sdl2 "sdl2 >= 2.0.1 sdl2 < 2.1.0" SDL_events.h SDL_PollEvent
6485     if disabled sdl2 && "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6486         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6487         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6488         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6489         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6490         check_func_headers SDL_events.h SDL_PollEvent $sdl2_extralibs $sdl2_cflags &&
6491             enable sdl2
6492     fi
6493     if test $target_os = "mingw32"; then
6494         sdl2_extralibs=$(filter_out '-mwindows' $sdl2_extralibs)
6495     fi
6496 fi
6497
6498 if enabled decklink; then
6499     case $target_os in
6500         mingw32*|mingw64*|win32|win64)
6501             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6502             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6503             ;;
6504     esac
6505 fi
6506
6507 enabled securetransport &&
6508     check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6509     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" ||
6510         disable securetransport
6511
6512 enabled securetransport &&
6513     check_func SecItemImport "-Wl,-framework,CoreFoundation -Wl,-framework,Security"
6514
6515 enabled schannel &&
6516     check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6517     test_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" &&
6518     schannel_extralibs="-lsecur32" ||
6519         disable schannel
6520
6521 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6522 enabled makeinfo \
6523     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6524     && enable makeinfo_html || disable makeinfo_html
6525 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6526 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6527 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6528 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6529
6530 # check V4L2 codecs available in the API
6531 if enabled v4l2_m2m; then
6532     check_headers linux/fb.h
6533     check_headers linux/videodev2.h
6534     test_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6535     check_cc v4l2_m2m linux/videodev2.h "int i = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_VIDEO_M2M | V4L2_BUF_FLAG_LAST;"
6536     check_cc vc1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VC1_ANNEX_G;"
6537     check_cc mpeg1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG1;"
6538     check_cc mpeg2_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG2;"
6539     check_cc mpeg4_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG4;"
6540     check_cc hevc_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_HEVC;"
6541     check_cc h263_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H263;"
6542     check_cc h264_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H264;"
6543     check_cc vp8_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP8;"
6544     check_cc vp9_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP9;"
6545 fi
6546
6547 check_headers sys/videoio.h
6548 test_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6549
6550 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6551 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6552 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6553 # w32api 3.12 had it defined wrong
6554 check_cpp_condition vfwcap_defines vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER"
6555
6556 check_type "dshow.h" IBaseFilter
6557
6558 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6559 check_headers "dev/bktr/ioctl_meteor.h dev/bktr/ioctl_bt848.h"                   ||
6560     check_headers "machine/ioctl_meteor.h machine/ioctl_bt848.h"                 ||
6561     check_headers "dev/video/meteor/ioctl_meteor.h dev/video/bktr/ioctl_bt848.h" ||
6562     check_headers "dev/ic/bt8xx.h"
6563
6564 if check_struct sys/soundcard.h audio_buf_info bytes; then
6565     enable_sanitized sys/soundcard.h
6566 else
6567     test_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_sanitized sys/soundcard.h
6568     #include <sys/soundcard.h>
6569     audio_buf_info abc;
6570 EOF
6571 fi
6572
6573 enabled alsa && { check_pkg_config alsa alsa "alsa/asoundlib.h" snd_pcm_htimestamp ||
6574                   check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound; }
6575
6576 enabled libjack &&
6577     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
6578
6579 enabled sndio && check_lib sndio sndio.h sio_open -lsndio
6580
6581 if enabled libcdio; then
6582     check_pkg_config libcdio libcdio_paranoia "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open ||
6583     check_pkg_config libcdio libcdio_paranoia "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open ||
6584     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6585     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6586     die "ERROR: No usable libcdio/cdparanoia found"
6587 fi
6588
6589 enabled libxcb && check_pkg_config libxcb "xcb >= 1.4" xcb/xcb.h xcb_connect ||
6590     disable libxcb_shm libxcb_shape libxcb_xfixes
6591
6592 if enabled libxcb; then
6593     enabled libxcb_shm    && check_pkg_config libxcb_shm    xcb-shm    xcb/shm.h    xcb_shm_attach
6594     enabled libxcb_shape  && check_pkg_config libxcb_shape  xcb-shape  xcb/shape.h  xcb_shape_get_rectangles
6595     enabled libxcb_xfixes && check_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
6596 fi
6597
6598 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6599
6600 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6601 # the desktop api partition
6602 test_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
6603 #ifdef WINAPI_FAMILY
6604 #include <winapifamily.h>
6605 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
6606 #error desktop, not uwp
6607 #else
6608 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
6609 #endif
6610 #else
6611 #error no family set
6612 #endif
6613 EOF
6614
6615 enabled vaapi &&
6616     check_pkg_config vaapi "libva >= 0.35.0" "va/va.h" vaInitialize
6617
6618 if enabled vaapi; then
6619     check_pkg_config vaapi_drm "libva-drm" "va/va_drm.h" vaGetDisplayDRM
6620
6621     if enabled xlib; then
6622         check_pkg_config vaapi_x11 "libva-x11" "va/va_x11.h" vaGetDisplay
6623     fi
6624
6625     check_cpp_condition vaapi_1 "va/va.h" "VA_CHECK_VERSION(1, 0, 0)"
6626
6627     check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
6628     check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
6629     check_type   "va/va.h va/va_vpp.h" "VAProcFilterParameterBufferHDRToneMapping"
6630     check_struct "va/va.h va/va_vpp.h" "VAProcPipelineCaps" rotation_flags
6631     check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
6632     check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
6633     check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
6634     check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
6635 fi
6636
6637 if enabled_all opencl libdrm ; then
6638     check_type "CL/cl_intel.h" "clCreateImageFromFdINTEL_fn" &&
6639         enable opencl_drm_beignet
6640     check_func_headers "CL/cl_ext.h" clImportMemoryARM &&
6641         enable opencl_drm_arm
6642 fi
6643
6644 if enabled_all opencl vaapi ; then
6645     if enabled opencl_drm_beignet ; then
6646         enable opencl_vaapi_beignet
6647     else
6648         check_type "CL/cl.h CL/cl_va_api_media_sharing_intel.h" "clCreateFromVA_APIMediaSurfaceINTEL_fn" &&
6649             enable opencl_vaapi_intel_media
6650     fi
6651 fi
6652
6653 if enabled_all opencl dxva2 ; then
6654     check_type "CL/cl_dx9_media_sharing.h" cl_dx9_surface_info_khr &&
6655         enable opencl_dxva2
6656 fi
6657
6658 if enabled_all opencl d3d11va ; then
6659     check_type "CL/cl_d3d11.h" clGetDeviceIDsFromD3D11KHR_fn &&
6660         enable opencl_d3d11
6661 fi
6662
6663 enabled vdpau &&
6664     check_cpp_condition vdpau vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP"
6665
6666 enabled vdpau &&
6667     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6668
6669 enabled crystalhd && check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
6670
6671 enabled vulkan &&
6672     require_pkg_config vulkan "vulkan >= 1.1.97" "vulkan/vulkan.h" vkCreateInstance
6673
6674 if enabled x86; then
6675     case $target_os in
6676         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6677             ;;
6678         *)
6679             disable ffnvcodec cuvid nvdec nvenc
6680             ;;
6681     esac
6682 elif enabled_any aarch64 ppc64 && ! enabled bigendian; then
6683     case $target_os in
6684         linux)
6685             ;;
6686         *)
6687             disable ffnvcodec cuvid nvdec nvenc
6688             ;;
6689     esac
6690 else
6691     disable ffnvcodec cuvid nvdec nvenc
6692 fi
6693
6694 enabled ffnvcodec && enable cuda
6695
6696 enabled nvenc &&
6697     test_cc -I$source_path <<EOF || disable nvenc
6698 #include <ffnvcodec/nvEncodeAPI.h>
6699 NV_ENCODE_API_FUNCTION_LIST flist;
6700 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6701 int main(void) { return 0; }
6702 EOF
6703
6704 enabled amf &&
6705     check_cpp_condition amf "AMF/core/Version.h" \
6706         "(AMF_VERSION_MAJOR << 48 | AMF_VERSION_MINOR << 32 | AMF_VERSION_RELEASE << 16 | AMF_VERSION_BUILD_NUM) >= 0x0001000400090000"
6707
6708 # Funny iconv installations are not unusual, so check it after all flags have been set
6709 if enabled libc_iconv; then
6710     check_func_headers iconv.h iconv
6711 elif enabled iconv; then
6712     check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6713 fi
6714
6715 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6716
6717 # add some useful compiler flags if supported
6718 check_cflags -Wdeclaration-after-statement
6719 check_cflags -Wall
6720 check_cflags -Wdisabled-optimization
6721 check_cflags -Wpointer-arith
6722 check_cflags -Wredundant-decls
6723 check_cflags -Wwrite-strings
6724 check_cflags -Wtype-limits
6725 check_cflags -Wundef
6726 check_cflags -Wmissing-prototypes
6727 check_cflags -Wno-pointer-to-int-cast
6728 check_cflags -Wstrict-prototypes
6729 check_cflags -Wempty-body
6730
6731 if enabled extra_warnings; then
6732     check_cflags -Wcast-qual
6733     check_cflags -Wextra
6734     check_cflags -Wpedantic
6735 fi
6736
6737 check_disable_warning(){
6738     warning_flag=-W${1#-Wno-}
6739     test_cflags $unknown_warning_flags $warning_flag && add_cflags $1
6740 }
6741
6742 test_cflags -Werror=unused-command-line-argument &&
6743     append unknown_warning_flags "-Werror=unused-command-line-argument"
6744 test_cflags -Werror=unknown-warning-option &&
6745     append unknown_warning_flags "-Werror=unknown-warning-option"
6746
6747 check_disable_warning -Wno-parentheses
6748 check_disable_warning -Wno-switch
6749 check_disable_warning -Wno-format-zero-length
6750 check_disable_warning -Wno-pointer-sign
6751 check_disable_warning -Wno-unused-const-variable
6752 check_disable_warning -Wno-bool-operation
6753 check_disable_warning -Wno-char-subscripts
6754
6755 check_disable_warning_headers(){
6756     warning_flag=-W${1#-Wno-}
6757     test_cflags $warning_flag && add_cflags_headers $1
6758 }
6759
6760 check_disable_warning_headers -Wno-deprecated-declarations
6761 check_disable_warning_headers -Wno-unused-variable
6762
6763 test_cc <<EOF && enable blocks_extension
6764 void (^block)(void);
6765 EOF
6766
6767 # add some linker flags
6768 check_ldflags -Wl,--warn-common
6769 check_ldflags -Wl,-rpath-link=:libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6770 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir && add_ldsoflags -Wl,-rpath,$libdir
6771 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6772
6773 # add some strip flags
6774 check_stripflags -x
6775
6776 enabled neon_clobber_test &&
6777     check_ldflags -Wl,--wrap,avcodec_open2              \
6778                   -Wl,--wrap,avcodec_decode_audio4      \
6779                   -Wl,--wrap,avcodec_decode_video2      \
6780                   -Wl,--wrap,avcodec_decode_subtitle2   \
6781                   -Wl,--wrap,avcodec_encode_audio2      \
6782                   -Wl,--wrap,avcodec_encode_video2      \
6783                   -Wl,--wrap,avcodec_encode_subtitle    \
6784                   -Wl,--wrap,avcodec_send_packet        \
6785                   -Wl,--wrap,avcodec_receive_packet     \
6786                   -Wl,--wrap,avcodec_send_frame         \
6787                   -Wl,--wrap,avcodec_receive_frame      \
6788                   -Wl,--wrap,swr_convert                \
6789                   -Wl,--wrap,avresample_convert ||
6790     disable neon_clobber_test
6791
6792 enabled xmm_clobber_test &&
6793     check_ldflags -Wl,--wrap,avcodec_open2              \
6794                   -Wl,--wrap,avcodec_decode_audio4      \
6795                   -Wl,--wrap,avcodec_decode_video2      \
6796                   -Wl,--wrap,avcodec_decode_subtitle2   \
6797                   -Wl,--wrap,avcodec_encode_audio2      \
6798                   -Wl,--wrap,avcodec_encode_video2      \
6799                   -Wl,--wrap,avcodec_encode_subtitle    \
6800                   -Wl,--wrap,avcodec_send_packet        \
6801                   -Wl,--wrap,avcodec_receive_packet     \
6802                   -Wl,--wrap,avcodec_send_frame         \
6803                   -Wl,--wrap,avcodec_receive_frame      \
6804                   -Wl,--wrap,swr_convert                \
6805                   -Wl,--wrap,avresample_convert         \
6806                   -Wl,--wrap,sws_scale ||
6807     disable xmm_clobber_test
6808
6809 check_ld "cc" proper_dce <<EOF
6810 extern const int array[512];
6811 static inline int func(void) { return array[0]; }
6812 int main(void) { return 0; }
6813 EOF
6814
6815 if enabled proper_dce; then
6816     echo "X { local: *; };" > $TMPV
6817     if test_ldflags -Wl,${version_script},$TMPV; then
6818         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6819         quotes='""'
6820         test_cc <<EOF && enable symver_asm_label
6821 void ff_foo(void) __asm__ ("av_foo@VERSION");
6822 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6823 EOF
6824         test_cc <<EOF && enable symver_gnu_asm
6825 __asm__(".symver ff_foo,av_foo@VERSION");
6826 void ff_foo(void) {}
6827 EOF
6828     fi
6829 fi
6830
6831 if [ -z "$optflags" ]; then
6832     if enabled small; then
6833         optflags=$cflags_size
6834     elif enabled optimizations; then
6835         optflags=$cflags_speed
6836     else
6837         optflags=$cflags_noopt
6838     fi
6839 fi
6840
6841 check_optflags(){
6842     check_cflags "$@"
6843     enabled lto && check_ldflags "$@"
6844 }
6845
6846 check_optflags $optflags
6847 check_optflags -fno-math-errno
6848 check_optflags -fno-signed-zeros
6849
6850 if enabled lto; then
6851     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6852     check_cflags  -flto
6853     check_ldflags -flto $cpuflags
6854     disable inline_asm_direct_symbol_refs
6855 fi
6856
6857 enabled ftrapv && check_cflags -ftrapv
6858
6859 test_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6860 int x;
6861 EOF
6862
6863
6864 if enabled icc; then
6865     # Just warnings, no remarks
6866     check_cflags -w1
6867     # -wd: Disable following warnings
6868     # 144, 167, 556: -Wno-pointer-sign
6869     # 188: enumerated type mixed with another type
6870     # 1292: attribute "foo" ignored
6871     # 1419: external declaration in primary source file
6872     # 10006: ignoring unknown option -fno-signed-zeros
6873     # 10148: ignoring unknown option -Wno-parentheses
6874     # 10156: ignoring option '-W'; no argument required
6875     # 13200: No EMMS instruction before call to function
6876     # 13203: No EMMS instruction before return from function
6877     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6878     # 11030: Warning unknown option --as-needed
6879     # 10156: ignoring option '-export'; no argument required
6880     check_ldflags -wd10156,11030
6881     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6882     enable ebp_available
6883     # The test above does not test linking
6884     enabled lto && disable symver_asm_label
6885     if enabled x86_32; then
6886         icc_version=$($cc -dumpversion)
6887         test ${icc_version%%.*} -ge 11 &&
6888             check_cflags -falign-stack=maintain-16-byte ||
6889             disable aligned_stack
6890     fi
6891 elif enabled gcc; then
6892     check_optflags -fno-tree-vectorize
6893     check_cflags -Werror=format-security
6894     check_cflags -Werror=implicit-function-declaration
6895     check_cflags -Werror=missing-prototypes
6896     check_cflags -Werror=return-type
6897     check_cflags -Werror=vla
6898     check_cflags -Wformat
6899     check_cflags -fdiagnostics-color=auto
6900     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6901     if enabled x86_32; then
6902         case $target_os in
6903         *bsd*)
6904             # BSDs don't guarantee a 16 byte aligned stack, but we can
6905             # request GCC to try to maintain 16 byte alignment throughout
6906             # function calls. Library entry points that might call assembly
6907             # functions align the stack. (The parameter means 2^4 bytes.)
6908             check_cflags -mpreferred-stack-boundary=4
6909             ;;
6910         esac
6911     fi
6912 elif enabled llvm_gcc; then
6913     check_cflags -mllvm -stack-alignment=16
6914 elif enabled clang; then
6915     if enabled x86_32; then
6916         # Clang doesn't support maintaining alignment without assuming the
6917         # same alignment in every function. If 16 byte alignment would be
6918         # enabled, one would also have to either add attribute_align_arg on
6919         # every single entry point into the libraries or enable -mstackrealign
6920         # (doing stack realignment in every single function).
6921         case $target_os in
6922         mingw32|win32|*bsd*)
6923             disable aligned_stack
6924             ;;
6925         *)
6926             check_cflags -mllvm -stack-alignment=16
6927             check_cflags -mstack-alignment=16
6928             ;;
6929         esac
6930     else
6931         check_cflags -mllvm -stack-alignment=16
6932         check_cflags -mstack-alignment=16
6933     fi
6934     check_cflags -Qunused-arguments
6935     check_cflags -Werror=implicit-function-declaration
6936     check_cflags -Werror=missing-prototypes
6937     check_cflags -Werror=return-type
6938 elif enabled cparser; then
6939     add_cflags -Wno-missing-variable-declarations
6940     add_cflags -Wno-empty-statement
6941 elif enabled armcc; then
6942     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6943     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6944     # 2523: use of inline assembly is deprecated
6945     add_cflags -W${armcc_opt},--diag_suppress=2523
6946     add_cflags -W${armcc_opt},--diag_suppress=1207
6947     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6948     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6949     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6950     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6951 elif enabled pathscale; then
6952     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6953     disable inline_asm
6954 elif enabled_any msvc icl; then
6955     enabled x86_32 && disable aligned_stack
6956     enabled_all x86_32 debug && add_cflags -Oy-
6957     enabled debug && add_ldflags -debug
6958     enable pragma_deprecated
6959     if enabled icl; then
6960         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6961         # (correctly) on icl 13.x.
6962         test_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6963             add_cflags -Qansi-alias
6964         # Some inline asm is not compilable in debug
6965         if enabled debug; then
6966             disable ebp_available
6967             disable ebx_available
6968         fi
6969     fi
6970     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6971     check_cpp_condition log2 crtversion.h "_VC_CRT_MAJOR_VERSION >= 12"
6972     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6973     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6974     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6975     # MSVC 2013 and newer can handle it fine.
6976     # If this declspec fails, force including stdlib.h before the restrict redefinition
6977     # happens in config.h.
6978     if [ $restrict_keyword != restrict ]; then
6979         test_cc <<EOF || add_cflags -FIstdlib.h
6980 __declspec($restrict_keyword) void *foo(int);
6981 EOF
6982     fi
6983     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6984     # Issue has been fixed in MSVC v19.00.24218.
6985     test_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6986         check_cflags -d2SSAOptimizer-
6987     # enable utf-8 source processing on VS2015 U2 and newer
6988     test_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6989         add_cflags -utf-8
6990 fi
6991
6992 for pfx in "" host_; do
6993     varname=${pfx%_}cc_type
6994     eval "type=\$$varname"
6995     if [ "$type" = "msvc" ]; then
6996         test_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6997 static inline int foo(int a) { return a; }
6998 EOF
6999     fi
7000 done
7001
7002 case $as_type in
7003     clang)
7004         add_asflags -Qunused-arguments
7005     ;;
7006 esac
7007
7008 case $ld_type in
7009     clang)
7010         check_ldflags -Qunused-arguments
7011     ;;
7012 esac
7013
7014 enable frame_thread_encoder
7015
7016 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
7017
7018 check_deps $CONFIG_LIST       \
7019            $CONFIG_EXTRA      \
7020            $HAVE_LIST         \
7021            $ALL_COMPONENTS    \
7022
7023 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"
7024 enabled avresample && warn "Building with deprecated library libavresample"
7025
7026 case $target_os in
7027 haiku)
7028     disable memalign
7029     disable posix_memalign
7030     ;;
7031 *-dos|freedos|opendos)
7032     if test_cpp_condition sys/version.h "defined(__DJGPP__) && __DJGPP__ == 2 && __DJGPP_MINOR__ == 5"; then
7033         disable memalign
7034     fi
7035     ;;
7036 esac
7037
7038 flatten_extralibs(){
7039     nested_entries=
7040     list_name=$1
7041     eval list=\$${1}
7042     for entry in $list; do
7043         entry_copy=$entry
7044         resolve entry_copy
7045         flat_entries=
7046         for e in $entry_copy; do
7047             case $e in
7048                 *_extralibs) nested_entries="$nested_entries$e ";;
7049                           *) flat_entries="$flat_entries$e ";;
7050             esac
7051         done
7052         eval $entry="\$flat_entries"
7053     done
7054     append $list_name "$nested_entries"
7055
7056     resolve nested_entries
7057     if test -n "$(filter '*_extralibs' $nested_entries)"; then
7058         flatten_extralibs $list_name
7059     fi
7060 }
7061
7062 flatten_extralibs_wrapper(){
7063     list_name=$1
7064     flatten_extralibs $list_name
7065     unique $list_name
7066     resolve $list_name
7067     eval $list_name=\$\(\$ldflags_filter \$$list_name\)
7068     eval printf \''%s'\' \""\$$list_name"\"
7069 }
7070
7071 for linkunit in $LIBRARY_LIST; do
7072     unset current_extralibs
7073     eval components=\$$(toupper ${linkunit})_COMPONENTS_LIST
7074     for comp in ${components}; do
7075         enabled $comp || continue
7076         comp_extralibs="${comp}_extralibs"
7077         append current_extralibs $comp_extralibs
7078     done
7079     eval prepend ${linkunit}_extralibs $current_extralibs
7080 done
7081
7082 for linkunit in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
7083     eval ${linkunit}_extralibs=\$\(flatten_extralibs_wrapper ${linkunit}_extralibs\)
7084 done
7085
7086 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
7087
7088 for thread in $THREADS_LIST; do
7089     if enabled $thread; then
7090         test -n "$thread_type" &&
7091             die "ERROR: Only one thread type must be selected." ||
7092             thread_type="$thread"
7093     fi
7094 done
7095
7096 if disabled stdatomic; then
7097     if enabled atomics_gcc; then
7098         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
7099     elif enabled atomics_win32; then
7100         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
7101     elif enabled atomics_suncc; then
7102         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
7103     elif enabled pthreads; then
7104         add_compat atomics/pthread/stdatomic.o
7105         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
7106     else
7107         enabled threads && die "Threading is enabled, but no atomics are available"
7108         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
7109     fi
7110 fi
7111
7112 # Check if requested libraries were found.
7113 for lib in $AUTODETECT_LIBS; do
7114     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
7115 done
7116
7117 enabled zlib && add_cppflags -DZLIB_CONST
7118
7119 # conditional library dependencies, in any order
7120 enabled afftdn_filter       && prepend avfilter_deps "avcodec"
7121 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
7122 enabled afir_filter         && prepend avfilter_deps "avcodec"
7123 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
7124 enabled aresample_filter    && prepend avfilter_deps "swresample"
7125 enabled atempo_filter       && prepend avfilter_deps "avcodec"
7126 enabled bm3d_filter         && prepend avfilter_deps "avcodec"
7127 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
7128 enabled convolve_filter     && prepend avfilter_deps "avcodec"
7129 enabled deconvolve_filter   && prepend avfilter_deps "avcodec"
7130 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
7131 enabled elbg_filter         && prepend avfilter_deps "avcodec"
7132 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
7133 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
7134 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
7135 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
7136 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
7137 enabled pan_filter          && prepend avfilter_deps "swresample"
7138 enabled pp_filter           && prepend avfilter_deps "postproc"
7139 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
7140 enabled resample_filter && prepend avfilter_deps "avresample"
7141 enabled sab_filter          && prepend avfilter_deps "swscale"
7142 enabled scale_filter    && prepend avfilter_deps "swscale"
7143 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
7144 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
7145 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
7146 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
7147 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
7148 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
7149 enabled smartblur_filter    && prepend avfilter_deps "swscale"
7150 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
7151 enabled spp_filter          && prepend avfilter_deps "avcodec"
7152 enabled sr_filter           && prepend avfilter_deps "avformat swscale"
7153 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
7154 enabled uspp_filter         && prepend avfilter_deps "avcodec"
7155 enabled zoompan_filter      && prepend avfilter_deps "swscale"
7156
7157 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
7158
7159 #FIXME
7160 enabled_any sdl2_outdev opengl_outdev && enabled sdl2 &&
7161     add_cflags $(filter_out '-Dmain=SDL_main' $sdl2_cflags)
7162
7163 enabled opus_decoder    && prepend avcodec_deps "swresample"
7164
7165 # reorder the items at var $1 to align with the items order at var $2 .
7166 # die if an item at $1 is not at $2 .
7167 reorder_by(){
7168     eval rb_in=\$$1
7169     eval rb_ordered=\$$2
7170
7171     for rb in $rb_in; do
7172         is_in $rb $rb_ordered || die "$rb at \$$1 is not at \$$2"
7173     done
7174
7175     rb_out=
7176     for rb in $rb_ordered; do
7177         is_in $rb $rb_in && rb_out="$rb_out$rb "
7178     done
7179     eval $1=\$rb_out
7180 }
7181
7182 # deps-expand fflib $1:  N x {append all expanded deps; unique}
7183 # within a set of N items, N expansions are enough to expose a cycle.
7184 expand_deps(){
7185     unique ${1}_deps  # required for the early break test.
7186     for dummy in $LIBRARY_LIST; do  # N iteratios
7187         eval deps=\$${1}_deps
7188         append ${1}_deps $(map 'eval echo \$${v}_deps' $deps)
7189         unique ${1}_deps
7190         eval '[ ${#deps} = ${#'${1}_deps'} ]' && break  # doesn't expand anymore
7191     done
7192
7193     eval is_in $1 \$${1}_deps && die "Dependency cycle at ${1}_deps"
7194     reorder_by ${1}_deps LIBRARY_LIST  # linking order is expected later
7195 }
7196
7197 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
7198 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
7199
7200 map 'expand_deps $v' $LIBRARY_LIST
7201
7202 if test "$quiet" != "yes"; then
7203
7204 echo "install prefix            $prefix"
7205 echo "source path               $source_path"
7206 echo "C compiler                $cc"
7207 echo "C library                 $libc_type"
7208 if test "$host_cc" != "$cc"; then
7209     echo "host C compiler           $host_cc"
7210     echo "host C library            $host_libc_type"
7211 fi
7212 echo "ARCH                      $arch ($cpu)"
7213 if test "$build_suffix" != ""; then
7214     echo "build suffix              $build_suffix"
7215 fi
7216 if test "$progs_suffix" != ""; then
7217     echo "progs suffix              $progs_suffix"
7218 fi
7219 if test "$extra_version" != ""; then
7220     echo "version string suffix     $extra_version"
7221 fi
7222 echo "big-endian                ${bigendian-no}"
7223 echo "runtime cpu detection     ${runtime_cpudetect-no}"
7224 if enabled x86; then
7225     echo "standalone assembly       ${x86asm-no}"
7226     echo "x86 assembler             ${x86asmexe}"
7227     echo "MMX enabled               ${mmx-no}"
7228     echo "MMXEXT enabled            ${mmxext-no}"
7229     echo "3DNow! enabled            ${amd3dnow-no}"
7230     echo "3DNow! extended enabled   ${amd3dnowext-no}"
7231     echo "SSE enabled               ${sse-no}"
7232     echo "SSSE3 enabled             ${ssse3-no}"
7233     echo "AESNI enabled             ${aesni-no}"
7234     echo "AVX enabled               ${avx-no}"
7235     echo "AVX2 enabled              ${avx2-no}"
7236     echo "AVX-512 enabled           ${avx512-no}"
7237     echo "XOP enabled               ${xop-no}"
7238     echo "FMA3 enabled              ${fma3-no}"
7239     echo "FMA4 enabled              ${fma4-no}"
7240     echo "i686 features enabled     ${i686-no}"
7241     echo "CMOV is fast              ${fast_cmov-no}"
7242     echo "EBX available             ${ebx_available-no}"
7243     echo "EBP available             ${ebp_available-no}"
7244 fi
7245 if enabled aarch64; then
7246     echo "NEON enabled              ${neon-no}"
7247     echo "VFP enabled               ${vfp-no}"
7248 fi
7249 if enabled arm; then
7250     echo "ARMv5TE enabled           ${armv5te-no}"
7251     echo "ARMv6 enabled             ${armv6-no}"
7252     echo "ARMv6T2 enabled           ${armv6t2-no}"
7253     echo "VFP enabled               ${vfp-no}"
7254     echo "NEON enabled              ${neon-no}"
7255     echo "THUMB enabled             ${thumb-no}"
7256 fi
7257 if enabled mips; then
7258     echo "MIPS FPU enabled          ${mipsfpu-no}"
7259     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
7260     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
7261     echo "MIPS MSA enabled          ${msa-no}"
7262     echo "MIPS MSA2 enabled         ${msa2-no}"
7263     echo "LOONGSON MMI enabled      ${mmi-no}"
7264 fi
7265 if enabled ppc; then
7266     echo "AltiVec enabled           ${altivec-no}"
7267     echo "VSX enabled               ${vsx-no}"
7268     echo "POWER8 enabled            ${power8-no}"
7269     echo "PPC 4xx optimizations     ${ppc4xx-no}"
7270     echo "dcbzl available           ${dcbzl-no}"
7271 fi
7272 echo "debug symbols             ${debug-no}"
7273 echo "strip symbols             ${stripping-no}"
7274 echo "optimize for size         ${small-no}"
7275 echo "optimizations             ${optimizations-no}"
7276 echo "static                    ${static-no}"
7277 echo "shared                    ${shared-no}"
7278 echo "postprocessing support    ${postproc-no}"
7279 echo "network support           ${network-no}"
7280 echo "threading support         ${thread_type-no}"
7281 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
7282 echo "texi2html enabled         ${texi2html-no}"
7283 echo "perl enabled              ${perl-no}"
7284 echo "pod2man enabled           ${pod2man-no}"
7285 echo "makeinfo enabled          ${makeinfo-no}"
7286 echo "makeinfo supports HTML    ${makeinfo_html-no}"
7287 test -n "$random_seed" &&
7288     echo "random seed               ${random_seed}"
7289 echo
7290
7291 echo "External libraries:"
7292 print_enabled '' $EXTERNAL_LIBRARY_LIST $EXTERNAL_AUTODETECT_LIBRARY_LIST | print_in_columns
7293 echo
7294
7295 echo "External libraries providing hardware acceleration:"
7296 print_enabled '' $HWACCEL_LIBRARY_LIST $HWACCEL_AUTODETECT_LIBRARY_LIST | print_in_columns
7297 echo
7298
7299 echo "Libraries:"
7300 print_enabled '' $LIBRARY_LIST | print_in_columns
7301 echo
7302
7303 echo "Programs:"
7304 print_enabled '' $PROGRAM_LIST | print_in_columns
7305 echo
7306
7307 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
7308     echo "Enabled ${type}s:"
7309     eval list=\$$(toupper $type)_LIST
7310     print_enabled '_*' $list | print_in_columns
7311     echo
7312 done
7313
7314 if test -n "$ignore_tests"; then
7315     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
7316     echo "Ignored FATE tests:"
7317     echo $ignore_tests | print_in_columns
7318     echo
7319 fi
7320
7321 echo "License: $license"
7322
7323 fi # test "$quiet" != "yes"
7324
7325 if test -n "$WARN_IF_GETS_DISABLED_LIST"; then
7326     for cfg in $WARN_IF_GETS_DISABLED_LIST; do
7327         if disabled $cfg; then
7328             varname=${cfg}_disable_reason
7329             eval "warn \"Disabled $cfg because \$$varname\""
7330         fi
7331     done
7332 fi
7333
7334 if test -n "$WARNINGS"; then
7335     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
7336     enabled fatal_warnings && exit 1
7337 fi
7338
7339 test -e Makefile || echo "include $source_path/Makefile" > Makefile
7340
7341 esc(){
7342     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
7343 }
7344
7345 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
7346
7347 enabled stripping || strip="echo skipping strip"
7348 enabled stripping || striptype=""
7349
7350 config_files="$TMPH ffbuild/config.mak doc/config.texi"
7351
7352 cat > ffbuild/config.mak <<EOF
7353 # Automatically generated by configure - do not modify!
7354 ifndef FFMPEG_CONFIG_MAK
7355 FFMPEG_CONFIG_MAK=1
7356 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
7357 prefix=$prefix
7358 LIBDIR=\$(DESTDIR)$libdir
7359 SHLIBDIR=\$(DESTDIR)$shlibdir
7360 INCDIR=\$(DESTDIR)$incdir
7361 BINDIR=\$(DESTDIR)$bindir
7362 DATADIR=\$(DESTDIR)$datadir
7363 DOCDIR=\$(DESTDIR)$docdir
7364 MANDIR=\$(DESTDIR)$mandir
7365 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
7366 INSTALL_NAME_DIR=$install_name_dir
7367 SRC_PATH=$source_path
7368 SRC_LINK=$source_link
7369 ifndef MAIN_MAKEFILE
7370 SRC_PATH:=\$(SRC_PATH:.%=..%)
7371 endif
7372 CC_IDENT=$cc_ident
7373 ARCH=$arch
7374 INTRINSICS=$intrinsics
7375 EXTERN_PREFIX=$extern_prefix
7376 CC=$cc
7377 CXX=$cxx
7378 AS=$as
7379 OBJCC=$objcc
7380 LD=$ld
7381 DEPCC=$dep_cc
7382 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
7383 DEPAS=$as
7384 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
7385 X86ASM=$x86asmexe
7386 DEPX86ASM=$x86asmexe
7387 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
7388 AR=$ar
7389 ARFLAGS=$arflags
7390 AR_O=$ar_o
7391 AR_CMD=$ar
7392 NM_CMD=$nm
7393 RANLIB=$ranlib
7394 STRIP=$strip
7395 STRIPTYPE=$striptype
7396 NVCC=$nvcc
7397 CP=cp -p
7398 LN_S=$ln_s
7399 CPPFLAGS=$CPPFLAGS
7400 CFLAGS=$CFLAGS
7401 CXXFLAGS=$CXXFLAGS
7402 OBJCFLAGS=$OBJCFLAGS
7403 ASFLAGS=$ASFLAGS
7404 NVCCFLAGS=$nvccflags
7405 AS_C=$AS_C
7406 AS_O=$AS_O
7407 OBJCC_C=$OBJCC_C
7408 OBJCC_E=$OBJCC_E
7409 OBJCC_O=$OBJCC_O
7410 CC_C=$CC_C
7411 CC_E=$CC_E
7412 CC_O=$CC_O
7413 CXX_C=$CXX_C
7414 CXX_O=$CXX_O
7415 NVCC_C=$NVCC_C
7416 NVCC_O=$NVCC_O
7417 LD_O=$LD_O
7418 X86ASM_O=$X86ASM_O
7419 LD_LIB=$LD_LIB
7420 LD_PATH=$LD_PATH
7421 DLLTOOL=$dlltool
7422 WINDRES=$windres
7423 DEPWINDRES=$dep_cc
7424 DOXYGEN=$doxygen
7425 LDFLAGS=$LDFLAGS
7426 LDEXEFLAGS=$LDEXEFLAGS
7427 LDSOFLAGS=$LDSOFLAGS
7428 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
7429 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
7430 X86ASMFLAGS=$X86ASMFLAGS
7431 BUILDSUF=$build_suffix
7432 PROGSSUF=$progs_suffix
7433 FULLNAME=$FULLNAME
7434 LIBPREF=$LIBPREF
7435 LIBSUF=$LIBSUF
7436 LIBNAME=$LIBNAME
7437 SLIBPREF=$SLIBPREF
7438 SLIBSUF=$SLIBSUF
7439 EXESUF=$EXESUF
7440 EXTRA_VERSION=$extra_version
7441 CCDEP=$CCDEP
7442 CXXDEP=$CXXDEP
7443 CCDEP_FLAGS=$CCDEP_FLAGS
7444 ASDEP=$ASDEP
7445 ASDEP_FLAGS=$ASDEP_FLAGS
7446 X86ASMDEP=$X86ASMDEP
7447 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
7448 CC_DEPFLAGS=$CC_DEPFLAGS
7449 AS_DEPFLAGS=$AS_DEPFLAGS
7450 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
7451 HOSTCC=$host_cc
7452 HOSTLD=$host_ld
7453 HOSTCFLAGS=$host_cflags
7454 HOSTCPPFLAGS=$host_cppflags
7455 HOSTEXESUF=$HOSTEXESUF
7456 HOSTLDFLAGS=$host_ldflags
7457 HOSTEXTRALIBS=$host_extralibs
7458 DEPHOSTCC=$host_cc
7459 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
7460 HOSTCCDEP=$HOSTCCDEP
7461 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
7462 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
7463 HOSTCC_C=$HOSTCC_C
7464 HOSTCC_O=$HOSTCC_O
7465 HOSTLD_O=$HOSTLD_O
7466 TARGET_EXEC=$target_exec $target_exec_args
7467 TARGET_PATH=$target_path
7468 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
7469 CFLAGS-ffplay=${sdl2_cflags}
7470 CFLAGS_HEADERS=$CFLAGS_HEADERS
7471 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
7472 EXTRALIBS=$extralibs
7473 COMPAT_OBJS=$compat_objs
7474 INSTALL=$install
7475 LIBTARGET=${LIBTARGET}
7476 SLIBNAME=${SLIBNAME}
7477 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
7478 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
7479 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
7480 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
7481 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
7482 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
7483 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
7484 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
7485 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
7486 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
7487 NOREDZONE_FLAGS=$noredzone_flags
7488 LIBFUZZER_PATH=$libfuzzer_path
7489 IGNORE_TESTS=$ignore_tests
7490 EOF
7491
7492 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
7493
7494 for entry in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
7495     eval echo "EXTRALIBS-${entry}=\$${entry}_extralibs" >> ffbuild/config.mak
7496 done
7497
7498 cat > $TMPH <<EOF
7499 /* Automatically generated by configure - do not modify! */
7500 #ifndef FFMPEG_CONFIG_H
7501 #define FFMPEG_CONFIG_H
7502 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
7503 #define FFMPEG_LICENSE "$(c_escape $license)"
7504 #define CONFIG_THIS_YEAR 2020
7505 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
7506 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
7507 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
7508 #define av_restrict $restrict_keyword
7509 #define EXTERN_PREFIX "${extern_prefix}"
7510 #define EXTERN_ASM ${extern_prefix}
7511 #define BUILDSUF "$build_suffix"
7512 #define SLIBSUF "$SLIBSUF"
7513 #define HAVE_MMX2 HAVE_MMXEXT
7514 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
7515 EOF
7516
7517 test -n "$assert_level" &&
7518     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
7519
7520 test -n "$malloc_prefix" &&
7521     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
7522
7523 if enabled x86asm; then
7524     append config_files $TMPASM
7525     cat > $TMPASM <<EOF
7526 ; Automatically generated by configure - do not modify!
7527 EOF
7528 fi
7529
7530 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
7531
7532
7533 mkdir -p doc
7534 mkdir -p tests
7535 mkdir -p tests/api
7536 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
7537
7538 print_config ARCH_   "$config_files" $ARCH_LIST
7539 print_config HAVE_   "$config_files" $HAVE_LIST
7540 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
7541                                      $CONFIG_EXTRA      \
7542                                      $ALL_COMPONENTS    \
7543
7544 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
7545 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
7546
7547 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
7548 cp_if_changed $TMPH config.h
7549 touch ffbuild/.config
7550
7551 enabled x86asm && cp_if_changed $TMPASM config.asm
7552
7553 cat > $TMPH <<EOF
7554 /* Generated by ffmpeg configure */
7555 #ifndef AVUTIL_AVCONFIG_H
7556 #define AVUTIL_AVCONFIG_H
7557 EOF
7558
7559 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
7560
7561 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
7562
7563 cp_if_changed $TMPH libavutil/avconfig.h
7564
7565 # full_filter_name_foo=vf_foo
7566 # full_filter_name_bar=asrc_bar
7567 # ...
7568 eval "$(sed -n "s/^extern AVFilter ff_\([avfsinkrc]\{2,5\}\)_\(.*\);/full_filter_name_\2=\1_\2/p" $source_path/libavfilter/allfilters.c)"
7569
7570 # generate the lists of enabled components
7571 print_enabled_components(){
7572     file=$1
7573     struct_name=$2
7574     name=$3
7575     shift 3
7576     echo "static const $struct_name * const $name[] = {" > $TMPH
7577     for c in $*; do
7578         if enabled $c; then
7579             case $name in
7580                 filter_list)
7581                     eval c=\$full_filter_name_${c%_filter}
7582                 ;;
7583                 indev_list)
7584                     c=${c%_indev}_demuxer
7585                 ;;
7586                 outdev_list)
7587                     c=${c%_outdev}_muxer
7588                 ;;
7589             esac
7590             printf "    &ff_%s,\n" $c >> $TMPH
7591         fi
7592     done
7593     if [ "$name" = "filter_list" ]; then
7594         for c in asrc_abuffer vsrc_buffer asink_abuffer vsink_buffer; do
7595             printf "    &ff_%s,\n" $c >> $TMPH
7596         done
7597     fi
7598     echo "    NULL };" >> $TMPH
7599     cp_if_changed $TMPH $file
7600 }
7601
7602 print_enabled_components libavfilter/filter_list.c AVFilter filter_list $FILTER_LIST
7603 print_enabled_components libavcodec/codec_list.c AVCodec codec_list $CODEC_LIST
7604 print_enabled_components libavcodec/parser_list.c AVCodecParser parser_list $PARSER_LIST
7605 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
7606 print_enabled_components libavformat/demuxer_list.c AVInputFormat demuxer_list $DEMUXER_LIST
7607 print_enabled_components libavformat/muxer_list.c AVOutputFormat muxer_list $MUXER_LIST
7608 print_enabled_components libavdevice/indev_list.c AVInputFormat indev_list $INDEV_LIST
7609 print_enabled_components libavdevice/outdev_list.c AVOutputFormat outdev_list $OUTDEV_LIST
7610 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
7611
7612 # Settings for pkg-config files
7613
7614 cat > $TMPH <<EOF
7615 # Automatically generated by configure - do not modify!
7616 shared=$shared
7617 build_suffix=$build_suffix
7618 prefix=$prefix
7619 libdir=$libdir
7620 incdir=$incdir
7621 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
7622 source_path=${source_path}
7623 LIBPREF=${LIBPREF}
7624 LIBSUF=${LIBSUF}
7625 extralibs_avutil="$avutil_extralibs"
7626 extralibs_avcodec="$avcodec_extralibs"
7627 extralibs_avformat="$avformat_extralibs"
7628 extralibs_avdevice="$avdevice_extralibs"
7629 extralibs_avfilter="$avfilter_extralibs"
7630 extralibs_avresample="$avresample_extralibs"
7631 extralibs_postproc="$postproc_extralibs"
7632 extralibs_swscale="$swscale_extralibs"
7633 extralibs_swresample="$swresample_extralibs"
7634 EOF
7635
7636 for lib in $LIBRARY_LIST; do
7637     lib_deps="$(eval echo \$${lib}_deps)"
7638     echo ${lib}_deps=\"$lib_deps\" >> $TMPH
7639 done
7640
7641 cp_if_changed $TMPH ffbuild/config.sh