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="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 hds_muxer_select="flv_muxer"
3287 hls_muxer_select="mpegts_muxer"
3288 hls_muxer_suggest="gcrypt openssl"
3289 image2_alias_pix_demuxer_select="image2_demuxer"
3290 image2_brender_pix_demuxer_select="image2_demuxer"
3291 ipod_muxer_select="mov_muxer"
3292 ismv_muxer_select="mov_muxer"
3293 ivf_muxer_select="av1_metadata_bsf vp9_superframe_bsf"
3294 matroska_audio_muxer_select="matroska_muxer"
3295 matroska_demuxer_select="iso_media riffdec"
3296 matroska_demuxer_suggest="bzlib lzo zlib"
3297 matroska_muxer_select="iso_media riffenc"
3298 mmf_muxer_select="riffenc"
3299 mov_demuxer_select="iso_media riffdec"
3300 mov_demuxer_suggest="zlib"
3301 mov_muxer_select="iso_media riffenc rtpenc_chain"
3302 mp3_demuxer_select="mpegaudio_parser"
3303 mp3_muxer_select="mpegaudioheader"
3304 mp4_muxer_select="mov_muxer"
3305 mpegts_demuxer_select="iso_media"
3306 mpegts_muxer_select="adts_muxer latm_muxer"
3307 mpegtsraw_demuxer_select="mpegts_demuxer"
3308 mxf_muxer_select="golomb"
3309 mxf_d10_muxer_select="mxf_muxer"
3310 mxf_opatom_muxer_select="mxf_muxer"
3311 nut_muxer_select="riffenc"
3312 nuv_demuxer_select="riffdec"
3313 oga_muxer_select="ogg_muxer"
3314 ogg_demuxer_select="dirac_parse"
3315 ogv_muxer_select="ogg_muxer"
3316 opus_muxer_select="ogg_muxer"
3317 psp_muxer_select="mov_muxer"
3318 rtp_demuxer_select="sdp_demuxer"
3319 rtp_muxer_select="golomb jpegtables"
3320 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3321 rtsp_demuxer_select="http_protocol rtpdec"
3322 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3323 sap_demuxer_select="sdp_demuxer"
3324 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3325 sdp_demuxer_select="rtpdec"
3326 smoothstreaming_muxer_select="ismv_muxer"
3327 spdif_demuxer_select="adts_header"
3328 spdif_muxer_select="adts_header"
3329 spx_muxer_select="ogg_muxer"
3330 swf_demuxer_suggest="zlib"
3331 tak_demuxer_select="tak_parser"
3332 tg2_muxer_select="mov_muxer"
3333 tgp_muxer_select="mov_muxer"
3334 vobsub_demuxer_select="mpegps_demuxer"
3335 w64_demuxer_select="wav_demuxer"
3336 w64_muxer_select="wav_muxer"
3337 wav_demuxer_select="riffdec"
3338 wav_muxer_select="riffenc"
3339 webm_muxer_select="iso_media riffenc"
3340 webm_dash_manifest_demuxer_select="matroska_demuxer"
3341 wtv_demuxer_select="mpegts_demuxer riffdec"
3342 wtv_muxer_select="mpegts_muxer riffenc"
3343 xmv_demuxer_select="riffdec"
3344 xwma_demuxer_select="riffdec"
3345
3346 # indevs / outdevs
3347 android_camera_indev_deps="android camera2ndk mediandk pthreads"
3348 android_camera_indev_extralibs="-landroid -lcamera2ndk -lmediandk"
3349 alsa_indev_deps="alsa"
3350 alsa_outdev_deps="alsa"
3351 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3352 avfoundation_indev_suggest="coregraphics applicationservices"
3353 avfoundation_indev_extralibs="-framework Foundation"
3354 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3355 caca_outdev_deps="libcaca"
3356 decklink_deps_any="libdl LoadLibrary"
3357 decklink_indev_deps="decklink threads"
3358 decklink_indev_extralibs="-lstdc++"
3359 decklink_outdev_deps="decklink threads"
3360 decklink_outdev_suggest="libklvanc"
3361 decklink_outdev_extralibs="-lstdc++"
3362 dshow_indev_deps="IBaseFilter"
3363 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3364 fbdev_indev_deps="linux_fb_h"
3365 fbdev_outdev_deps="linux_fb_h"
3366 gdigrab_indev_deps="CreateDIBSection"
3367 gdigrab_indev_extralibs="-lgdi32"
3368 gdigrab_indev_select="bmp_decoder"
3369 iec61883_indev_deps="libiec61883"
3370 jack_indev_deps="libjack"
3371 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3372 kmsgrab_indev_deps="libdrm"
3373 lavfi_indev_deps="avfilter"
3374 libcdio_indev_deps="libcdio"
3375 libdc1394_indev_deps="libdc1394"
3376 openal_indev_deps="openal"
3377 opengl_outdev_deps="opengl"
3378 opengl_outdev_suggest="sdl2"
3379 oss_indev_deps_any="sys_soundcard_h"
3380 oss_outdev_deps_any="sys_soundcard_h"
3381 pulse_indev_deps="libpulse"
3382 pulse_outdev_deps="libpulse"
3383 sdl2_outdev_deps="sdl2"
3384 sndio_indev_deps="sndio"
3385 sndio_outdev_deps="sndio"
3386 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3387 v4l2_indev_suggest="libv4l2"
3388 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3389 v4l2_outdev_suggest="libv4l2"
3390 vfwcap_indev_deps="vfw32 vfwcap_defines"
3391 xcbgrab_indev_deps="libxcb"
3392 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3393 xv_outdev_deps="xlib"
3394
3395 # protocols
3396 async_protocol_deps="threads"
3397 bluray_protocol_deps="libbluray"
3398 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3399 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl mbedtls"
3400 ffrtmpcrypt_protocol_select="tcp_protocol"
3401 ffrtmphttp_protocol_conflict="librtmp_protocol"
3402 ffrtmphttp_protocol_select="http_protocol"
3403 ftp_protocol_select="tcp_protocol"
3404 gopher_protocol_select="network"
3405 http_protocol_select="tcp_protocol"
3406 http_protocol_suggest="zlib"
3407 httpproxy_protocol_select="tcp_protocol"
3408 httpproxy_protocol_suggest="zlib"
3409 https_protocol_select="tls_protocol"
3410 https_protocol_suggest="zlib"
3411 icecast_protocol_select="http_protocol"
3412 mmsh_protocol_select="http_protocol"
3413 mmst_protocol_select="network"
3414 rtmp_protocol_conflict="librtmp_protocol"
3415 rtmp_protocol_select="tcp_protocol"
3416 rtmp_protocol_suggest="zlib"
3417 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3418 rtmpe_protocol_suggest="zlib"
3419 rtmps_protocol_conflict="librtmp_protocol"
3420 rtmps_protocol_select="tls_protocol"
3421 rtmps_protocol_suggest="zlib"
3422 rtmpt_protocol_select="ffrtmphttp_protocol"
3423 rtmpt_protocol_suggest="zlib"
3424 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3425 rtmpte_protocol_suggest="zlib"
3426 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3427 rtmpts_protocol_suggest="zlib"
3428 rtp_protocol_select="udp_protocol"
3429 schannel_conflict="openssl gnutls libtls mbedtls"
3430 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3431 sctp_protocol_select="network"
3432 securetransport_conflict="openssl gnutls libtls mbedtls"
3433 srtp_protocol_select="rtp_protocol srtp"
3434 tcp_protocol_select="network"
3435 tls_protocol_deps_any="gnutls openssl schannel securetransport libtls mbedtls"
3436 tls_protocol_select="tcp_protocol"
3437 udp_protocol_select="network"
3438 udplite_protocol_select="network"
3439 unix_protocol_deps="sys_un_h"
3440 unix_protocol_select="network"
3441
3442 # external library protocols
3443 libamqp_protocol_deps="librabbitmq"
3444 libamqp_protocol_select="network"
3445 librtmp_protocol_deps="librtmp"
3446 librtmpe_protocol_deps="librtmp"
3447 librtmps_protocol_deps="librtmp"
3448 librtmpt_protocol_deps="librtmp"
3449 librtmpte_protocol_deps="librtmp"
3450 libsmbclient_protocol_deps="libsmbclient gplv3"
3451 libsrt_protocol_deps="libsrt"
3452 libsrt_protocol_select="network"
3453 libssh_protocol_deps="libssh"
3454 libtls_conflict="openssl gnutls mbedtls"
3455 libzmq_protocol_deps="libzmq"
3456 libzmq_protocol_select="network"
3457
3458 # filters
3459 afftdn_filter_deps="avcodec"
3460 afftdn_filter_select="fft"
3461 afftfilt_filter_deps="avcodec"
3462 afftfilt_filter_select="fft"
3463 afir_filter_deps="avcodec"
3464 afir_filter_select="rdft"
3465 amovie_filter_deps="avcodec avformat"
3466 aresample_filter_deps="swresample"
3467 asr_filter_deps="pocketsphinx"
3468 ass_filter_deps="libass"
3469 atempo_filter_deps="avcodec"
3470 atempo_filter_select="rdft"
3471 avgblur_opencl_filter_deps="opencl"
3472 avgblur_vulkan_filter_deps="vulkan libglslang"
3473 azmq_filter_deps="libzmq"
3474 blackframe_filter_deps="gpl"
3475 bm3d_filter_deps="avcodec"
3476 bm3d_filter_select="dct"
3477 boxblur_filter_deps="gpl"
3478 boxblur_opencl_filter_deps="opencl gpl"
3479 bs2b_filter_deps="libbs2b"
3480 chromaber_vulkan_filter_deps="vulkan libglslang"
3481 colorkey_opencl_filter_deps="opencl"
3482 colormatrix_filter_deps="gpl"
3483 convolution_opencl_filter_deps="opencl"
3484 convolve_filter_deps="avcodec"
3485 convolve_filter_select="fft"
3486 coreimage_filter_deps="coreimage appkit"
3487 coreimage_filter_extralibs="-framework OpenGL"
3488 coreimagesrc_filter_deps="coreimage appkit"
3489 coreimagesrc_filter_extralibs="-framework OpenGL"
3490 cover_rect_filter_deps="avcodec avformat gpl"
3491 cropdetect_filter_deps="gpl"
3492 deconvolve_filter_deps="avcodec"
3493 deconvolve_filter_select="fft"
3494 deinterlace_qsv_filter_deps="libmfx"
3495 deinterlace_vaapi_filter_deps="vaapi"
3496 delogo_filter_deps="gpl"
3497 denoise_vaapi_filter_deps="vaapi"
3498 derain_filter_select="dnn"
3499 deshake_filter_select="pixelutils"
3500 deshake_opencl_filter_deps="opencl"
3501 dilation_opencl_filter_deps="opencl"
3502 dnn_processing_filter_deps="swscale"
3503 dnn_processing_filter_select="dnn"
3504 drawtext_filter_deps="libfreetype"
3505 drawtext_filter_suggest="libfontconfig libfribidi"
3506 elbg_filter_deps="avcodec"
3507 eq_filter_deps="gpl"
3508 erosion_opencl_filter_deps="opencl"
3509 fftfilt_filter_deps="avcodec"
3510 fftfilt_filter_select="rdft"
3511 fftdnoiz_filter_deps="avcodec"
3512 fftdnoiz_filter_select="fft"
3513 find_rect_filter_deps="avcodec avformat gpl"
3514 firequalizer_filter_deps="avcodec"
3515 firequalizer_filter_select="rdft"
3516 flite_filter_deps="libflite"
3517 framerate_filter_select="scene_sad"
3518 freezedetect_filter_select="scene_sad"
3519 frei0r_filter_deps="frei0r libdl"
3520 frei0r_src_filter_deps="frei0r libdl"
3521 fspp_filter_deps="gpl"
3522 headphone_filter_select="fft"
3523 histeq_filter_deps="gpl"
3524 hqdn3d_filter_deps="gpl"
3525 interlace_filter_deps="gpl"
3526 kerndeint_filter_deps="gpl"
3527 ladspa_filter_deps="ladspa libdl"
3528 lensfun_filter_deps="liblensfun version3"
3529 lv2_filter_deps="lv2"
3530 mcdeint_filter_deps="avcodec gpl"
3531 movie_filter_deps="avcodec avformat"
3532 mpdecimate_filter_deps="gpl"
3533 mpdecimate_filter_select="pixelutils"
3534 minterpolate_filter_select="scene_sad"
3535 mptestsrc_filter_deps="gpl"
3536 negate_filter_deps="lut_filter"
3537 nlmeans_opencl_filter_deps="opencl"
3538 nnedi_filter_deps="gpl"
3539 ocr_filter_deps="libtesseract"
3540 ocv_filter_deps="libopencv"
3541 openclsrc_filter_deps="opencl"
3542 overlay_opencl_filter_deps="opencl"
3543 overlay_qsv_filter_deps="libmfx"
3544 overlay_qsv_filter_select="qsvvpp"
3545 overlay_vulkan_filter_deps="vulkan libglslang"
3546 owdenoise_filter_deps="gpl"
3547 pad_opencl_filter_deps="opencl"
3548 pan_filter_deps="swresample"
3549 perspective_filter_deps="gpl"
3550 phase_filter_deps="gpl"
3551 pp7_filter_deps="gpl"
3552 pp_filter_deps="gpl postproc"
3553 prewitt_opencl_filter_deps="opencl"
3554 procamp_vaapi_filter_deps="vaapi"
3555 program_opencl_filter_deps="opencl"
3556 pullup_filter_deps="gpl"
3557 removelogo_filter_deps="avcodec avformat swscale"
3558 repeatfields_filter_deps="gpl"
3559 resample_filter_deps="avresample"
3560 roberts_opencl_filter_deps="opencl"
3561 rubberband_filter_deps="librubberband"
3562 sab_filter_deps="gpl swscale"
3563 scale2ref_filter_deps="swscale"
3564 scale_filter_deps="swscale"
3565 scale_qsv_filter_deps="libmfx"
3566 select_filter_select="scene_sad"
3567 sharpness_vaapi_filter_deps="vaapi"
3568 showcqt_filter_deps="avcodec avformat swscale"
3569 showcqt_filter_suggest="libfontconfig libfreetype"
3570 showcqt_filter_select="fft"
3571 showfreqs_filter_deps="avcodec"
3572 showfreqs_filter_select="fft"
3573 showspatial_filter_select="fft"
3574 showspectrum_filter_deps="avcodec"
3575 showspectrum_filter_select="fft"
3576 showspectrumpic_filter_deps="avcodec"
3577 showspectrumpic_filter_select="fft"
3578 signature_filter_deps="gpl avcodec avformat"
3579 sinc_filter_select="rdft"
3580 smartblur_filter_deps="gpl swscale"
3581 sobel_opencl_filter_deps="opencl"
3582 sofalizer_filter_deps="libmysofa avcodec"
3583 sofalizer_filter_select="fft"
3584 spectrumsynth_filter_deps="avcodec"
3585 spectrumsynth_filter_select="fft"
3586 spp_filter_deps="gpl avcodec"
3587 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3588 sr_filter_deps="avformat swscale"
3589 sr_filter_select="dnn"
3590 stereo3d_filter_deps="gpl"
3591 subtitles_filter_deps="avformat avcodec libass"
3592 super2xsai_filter_deps="gpl"
3593 pixfmts_super2xsai_test_deps="super2xsai_filter"
3594 superequalizer_filter_select="rdft"
3595 surround_filter_select="rdft"
3596 tinterlace_filter_deps="gpl"
3597 tinterlace_merge_test_deps="tinterlace_filter"
3598 tinterlace_pad_test_deps="tinterlace_filter"
3599 tonemap_filter_deps="const_nan"
3600 tonemap_vaapi_filter_deps="vaapi VAProcFilterParameterBufferHDRToneMapping"
3601 tonemap_opencl_filter_deps="opencl const_nan"
3602 transpose_opencl_filter_deps="opencl"
3603 transpose_vaapi_filter_deps="vaapi VAProcPipelineCaps_rotation_flags"
3604 unsharp_opencl_filter_deps="opencl"
3605 uspp_filter_deps="gpl avcodec"
3606 vaguedenoiser_filter_deps="gpl"
3607 vidstabdetect_filter_deps="libvidstab"
3608 vidstabtransform_filter_deps="libvidstab"
3609 libvmaf_filter_deps="libvmaf pthreads"
3610 zmq_filter_deps="libzmq"
3611 zoompan_filter_deps="swscale"
3612 zscale_filter_deps="libzimg const_nan"
3613 scale_vaapi_filter_deps="vaapi"
3614 scale_vulkan_filter_deps="vulkan libglslang"
3615 vpp_qsv_filter_deps="libmfx"
3616 vpp_qsv_filter_select="qsvvpp"
3617 xfade_opencl_filter_deps="opencl"
3618 yadif_cuda_filter_deps="ffnvcodec"
3619 yadif_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3620
3621 # examples
3622 avio_list_dir_deps="avformat avutil"
3623 avio_reading_deps="avformat avcodec avutil"
3624 decode_audio_example_deps="avcodec avutil"
3625 decode_video_example_deps="avcodec avutil"
3626 demuxing_decoding_example_deps="avcodec avformat avutil"
3627 encode_audio_example_deps="avcodec avutil"
3628 encode_video_example_deps="avcodec avutil"
3629 extract_mvs_example_deps="avcodec avformat avutil"
3630 filter_audio_example_deps="avfilter avutil"
3631 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3632 filtering_video_example_deps="avfilter avcodec avformat avutil"
3633 http_multiclient_example_deps="avformat avutil fork"
3634 hw_decode_example_deps="avcodec avformat avutil"
3635 metadata_example_deps="avformat avutil"
3636 muxing_example_deps="avcodec avformat avutil swscale"
3637 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3638 remuxing_example_deps="avcodec avformat avutil"
3639 resampling_audio_example_deps="avutil swresample"
3640 scaling_video_example_deps="avutil swscale"
3641 transcode_aac_example_deps="avcodec avformat swresample"
3642 transcoding_example_deps="avfilter avcodec avformat avutil"
3643 vaapi_encode_example_deps="avcodec avutil h264_vaapi_encoder"
3644 vaapi_transcode_example_deps="avcodec avformat avutil h264_vaapi_encoder"
3645
3646 # EXTRALIBS_LIST
3647 cpu_init_extralibs="pthreads_extralibs"
3648 cws2fws_extralibs="zlib_extralibs"
3649
3650 # libraries, in any order
3651 avcodec_deps="avutil"
3652 avcodec_suggest="libm"
3653 avcodec_select="null_bsf"
3654 avdevice_deps="avformat avcodec avutil"
3655 avdevice_suggest="libm"
3656 avfilter_deps="avutil"
3657 avfilter_suggest="libm"
3658 avformat_deps="avcodec avutil"
3659 avformat_suggest="libm network zlib"
3660 avresample_deps="avutil"
3661 avresample_suggest="libm"
3662 avutil_suggest="clock_gettime ffnvcodec libm libdrm libmfx opencl user32 vaapi vulkan videotoolbox corefoundation corevideo coremedia bcrypt"
3663 postproc_deps="avutil gpl"
3664 postproc_suggest="libm"
3665 swresample_deps="avutil"
3666 swresample_suggest="libm libsoxr"
3667 swscale_deps="avutil"
3668 swscale_suggest="libm"
3669
3670 avcodec_extralibs="pthreads_extralibs iconv_extralibs dxva2_extralibs"
3671 avfilter_extralibs="pthreads_extralibs"
3672 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3673
3674 # programs
3675 ffmpeg_deps="avcodec avfilter avformat"
3676 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3677                hflip_filter null_filter
3678                transpose_filter trim_filter vflip_filter"
3679 ffmpeg_suggest="ole32 psapi shell32"
3680 ffplay_deps="avcodec avformat swscale swresample sdl2"
3681 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3682 ffplay_suggest="shell32"
3683 ffprobe_deps="avcodec avformat"
3684 ffprobe_suggest="shell32"
3685
3686 # documentation
3687 podpages_deps="perl"
3688 manpages_deps="perl pod2man"
3689 htmlpages_deps="perl"
3690 htmlpages_deps_any="makeinfo_html texi2html"
3691 txtpages_deps="perl makeinfo"
3692 doc_deps_any="manpages htmlpages podpages txtpages"
3693
3694 # default parameters
3695
3696 logfile="ffbuild/config.log"
3697
3698 # installation paths
3699 prefix_default="/usr/local"
3700 bindir_default='${prefix}/bin'
3701 datadir_default='${prefix}/share/ffmpeg'
3702 docdir_default='${prefix}/share/doc/ffmpeg'
3703 incdir_default='${prefix}/include'
3704 libdir_default='${prefix}/lib'
3705 mandir_default='${prefix}/share/man'
3706
3707 # toolchain
3708 ar_default="ar"
3709 cc_default="gcc"
3710 cxx_default="g++"
3711 host_cc_default="gcc"
3712 doxygen_default="doxygen"
3713 install="install"
3714 ln_s_default="ln -s -f"
3715 nm_default="nm -g"
3716 pkg_config_default=pkg-config
3717 ranlib_default="ranlib"
3718 strip_default="strip"
3719 version_script='--version-script'
3720 objformat="elf32"
3721 x86asmexe_default="nasm"
3722 windres_default="windres"
3723 striptype="direct"
3724
3725 # OS
3726 target_os_default=$(tolower $(uname -s))
3727 host_os=$target_os_default
3728
3729 # machine
3730 if test "$target_os_default" = aix; then
3731     arch_default=$(uname -p)
3732     strip_default="strip -X32_64"
3733     nm_default="nm -g -X32_64"
3734 else
3735     arch_default=$(uname -m)
3736 fi
3737 cpu="generic"
3738 intrinsics="none"
3739
3740 # configurable options
3741 enable $PROGRAM_LIST
3742 enable $DOCUMENT_LIST
3743 enable $EXAMPLE_LIST
3744 enable $(filter_out avresample $LIBRARY_LIST)
3745 enable stripping
3746
3747 enable asm
3748 enable debug
3749 enable doc
3750 enable faan faandct faanidct
3751 enable large_tests
3752 enable optimizations
3753 enable runtime_cpudetect
3754 enable safe_bitstream_reader
3755 enable static
3756 enable swscale_alpha
3757 enable valgrind_backtrace
3758
3759 sws_max_filter_size_default=256
3760 set_default sws_max_filter_size
3761
3762 # internal components are enabled by default
3763 enable $EXTRALIBS_LIST
3764
3765 # Avoid external, non-system, libraries getting enabled by dependency resolution
3766 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3767
3768 # build settings
3769 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3770 LIBPREF="lib"
3771 LIBSUF=".a"
3772 FULLNAME='$(NAME)$(BUILDSUF)'
3773 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3774 SLIBPREF="lib"
3775 SLIBSUF=".so"
3776 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3777 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3778 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3779 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3780 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3781 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3782 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3783
3784 asflags_filter=echo
3785 cflags_filter=echo
3786 ldflags_filter=echo
3787
3788 AS_C='-c'
3789 AS_O='-o $@'
3790 CC_C='-c'
3791 CC_E='-E -o $@'
3792 CC_O='-o $@'
3793 CXX_C='-c'
3794 CXX_O='-o $@'
3795 OBJCC_C='-c'
3796 OBJCC_E='-E -o $@'
3797 OBJCC_O='-o $@'
3798 X86ASM_O='-o $@'
3799 LD_O='-o $@'
3800 LD_LIB='-l%'
3801 LD_PATH='-L'
3802 HOSTCC_C='-c'
3803 HOSTCC_E='-E -o $@'
3804 HOSTCC_O='-o $@'
3805 HOSTLD_O='-o $@'
3806 NVCC_C='-c'
3807 NVCC_O='-o $@'
3808
3809 host_extralibs='-lm'
3810 host_cflags_filter=echo
3811 host_ldflags_filter=echo
3812
3813 target_path='$(CURDIR)'
3814
3815 # since the object filename is not given with the -MM flag, the compiler
3816 # is only able to print the basename, and we must add the path ourselves
3817 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3818 DEPFLAGS='-MM'
3819
3820 mkdir -p ffbuild
3821
3822 # find source path
3823 if test -f configure; then
3824     source_path=.
3825 elif test -f src/configure; then
3826     source_path=src
3827 else
3828     source_path=$(cd $(dirname "$0"); pwd)
3829     case "$source_path" in
3830         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3831     esac
3832     test -e "$source_path/config.h" &&
3833         die "Out of tree builds are impossible with config.h in source dir."
3834 fi
3835
3836 for v in "$@"; do
3837     r=${v#*=}
3838     l=${v%"$r"}
3839     r=$(sh_quote "$r")
3840     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3841 done
3842
3843 find_things_extern(){
3844     thing=$1
3845     pattern=$2
3846     file=$source_path/$3
3847     out=${4:-$thing}
3848     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$out/p" "$file"
3849 }
3850
3851 find_filters_extern(){
3852     file=$source_path/$1
3853     sed -n 's/^extern AVFilter ff_[avfsinkrc]\{2,5\}_\([[:alnum:]_]\{1,\}\);/\1_filter/p' $file
3854 }
3855
3856 FILTER_LIST=$(find_filters_extern libavfilter/allfilters.c)
3857 OUTDEV_LIST=$(find_things_extern muxer AVOutputFormat libavdevice/alldevices.c outdev)
3858 INDEV_LIST=$(find_things_extern demuxer AVInputFormat libavdevice/alldevices.c indev)
3859 MUXER_LIST=$(find_things_extern muxer AVOutputFormat libavformat/allformats.c)
3860 DEMUXER_LIST=$(find_things_extern demuxer AVInputFormat libavformat/allformats.c)
3861 ENCODER_LIST=$(find_things_extern encoder AVCodec libavcodec/allcodecs.c)
3862 DECODER_LIST=$(find_things_extern decoder AVCodec libavcodec/allcodecs.c)
3863 CODEC_LIST="
3864     $ENCODER_LIST
3865     $DECODER_LIST
3866 "
3867 PARSER_LIST=$(find_things_extern parser AVCodecParser libavcodec/parsers.c)
3868 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3869 HWACCEL_LIST=$(find_things_extern hwaccel AVHWAccel libavcodec/hwaccels.h)
3870 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3871
3872 AVCODEC_COMPONENTS_LIST="
3873     $BSF_LIST
3874     $DECODER_LIST
3875     $ENCODER_LIST
3876     $HWACCEL_LIST
3877     $PARSER_LIST
3878 "
3879
3880 AVDEVICE_COMPONENTS_LIST="
3881     $INDEV_LIST
3882     $OUTDEV_LIST
3883 "
3884
3885 AVFILTER_COMPONENTS_LIST="
3886     $FILTER_LIST
3887 "
3888
3889 AVFORMAT_COMPONENTS_LIST="
3890     $DEMUXER_LIST
3891     $MUXER_LIST
3892     $PROTOCOL_LIST
3893 "
3894
3895 ALL_COMPONENTS="
3896     $AVCODEC_COMPONENTS_LIST
3897     $AVDEVICE_COMPONENTS_LIST
3898     $AVFILTER_COMPONENTS_LIST
3899     $AVFORMAT_COMPONENTS_LIST
3900 "
3901
3902 for n in $COMPONENT_LIST; do
3903     v=$(toupper ${n%s})_LIST
3904     eval enable \$$v
3905     eval ${n}_if_any="\$$v"
3906 done
3907
3908 enable $ARCH_EXT_LIST
3909
3910 die_unknown(){
3911     echo "Unknown option \"$1\"."
3912     echo "See $0 --help for available options."
3913     exit 1
3914 }
3915
3916 print_in_columns() {
3917     tr ' ' '\n' | sort | tr '\r\n' '  ' | awk -v col_width=24 -v width="$ncols" '
3918     {
3919         num_cols = width > col_width ? int(width / col_width) : 1;
3920         num_rows = int((NF + num_cols-1) / num_cols);
3921         y = x = 1;
3922         for (y = 1; y <= num_rows; y++) {
3923             i = y;
3924             for (x = 1; x <= num_cols; x++) {
3925                 if (i <= NF) {
3926                   line = sprintf("%s%-" col_width "s", line, $i);
3927                 }
3928                 i = i + num_rows;
3929             }
3930             print line; line = "";
3931         }
3932     }' | sed 's/ *$//'
3933 }
3934
3935 show_list() {
3936     suffix=_$1
3937     shift
3938     echo $* | sed s/$suffix//g | print_in_columns
3939     exit 0
3940 }
3941
3942 rand_list(){
3943     IFS=', '
3944     set -- $*
3945     unset IFS
3946     for thing; do
3947         comp=${thing%:*}
3948         prob=${thing#$comp}
3949         prob=${prob#:}
3950         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3951         echo "prob ${prob:-0.5}"
3952         printf '%s\n' $comp
3953     done
3954 }
3955
3956 do_random(){
3957     action=$1
3958     shift
3959     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3960     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3961 }
3962
3963 for opt do
3964     optval="${opt#*=}"
3965     case "$opt" in
3966         --extra-ldflags=*)
3967             add_ldflags $optval
3968         ;;
3969         --extra-ldexeflags=*)
3970             add_ldexeflags $optval
3971         ;;
3972         --extra-ldsoflags=*)
3973             add_ldsoflags $optval
3974         ;;
3975         --extra-ldlibflags=*)
3976             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3977                  "removed in the future. Use --extra-ldsoflags instead."
3978             add_ldsoflags $optval
3979         ;;
3980         --extra-libs=*)
3981             add_extralibs $optval
3982         ;;
3983         --disable-devices)
3984             disable $INDEV_LIST $OUTDEV_LIST
3985         ;;
3986         --enable-debug=*)
3987             debuglevel="$optval"
3988         ;;
3989         --disable-programs)
3990             disable $PROGRAM_LIST
3991         ;;
3992         --disable-everything)
3993             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3994         ;;
3995         --disable-all)
3996             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3997             disable $LIBRARY_LIST $PROGRAM_LIST doc
3998             enable avutil
3999         ;;
4000         --enable-random|--disable-random)
4001             action=${opt%%-random}
4002             do_random ${action#--} $COMPONENT_LIST
4003         ;;
4004         --enable-random=*|--disable-random=*)
4005             action=${opt%%-random=*}
4006             do_random ${action#--} $optval
4007         ;;
4008         --enable-sdl)
4009             enable sdl2
4010         ;;
4011         --enable-*=*|--disable-*=*)
4012             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
4013             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
4014             eval list=\$$(toupper $thing)_LIST
4015             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
4016             list=$(filter "$name" $list)
4017             [ "$list" = "" ] && warn "Option $opt did not match anything"
4018             test $action = enable && warn_if_gets_disabled $list
4019             $action $list
4020         ;;
4021         --enable-yasm|--disable-yasm)
4022             warn "The ${opt} option is only provided for compatibility and will be\n"\
4023                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
4024             test $opt = --enable-yasm && x86asm=yes || x86asm=no
4025         ;;
4026         --yasmexe=*)
4027             warn "The --yasmexe option is only provided for compatibility and will be\n"\
4028                  "removed in the future. Use --x86asmexe instead."
4029             x86asmexe="$optval"
4030         ;;
4031         --enable-?*|--disable-?*)
4032             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
4033             if is_in $option $COMPONENT_LIST; then
4034                 test $action = disable && action=unset
4035                 eval $action \$$(toupper ${option%s})_LIST
4036             elif is_in $option $CMDLINE_SELECT; then
4037                 $action $option
4038             else
4039                 die_unknown $opt
4040             fi
4041         ;;
4042         --list-*)
4043             NAME="${opt#--list-}"
4044             is_in $NAME $COMPONENT_LIST || die_unknown $opt
4045             NAME=${NAME%s}
4046             eval show_list $NAME \$$(toupper $NAME)_LIST
4047         ;;
4048         --help|-h) show_help
4049         ;;
4050         --quiet|-q) quiet=yes
4051         ;;
4052         --fatal-warnings) enable fatal_warnings
4053         ;;
4054         --libfuzzer=*)
4055             libfuzzer_path="$optval"
4056         ;;
4057         *)
4058             optname="${opt%%=*}"
4059             optname="${optname#--}"
4060             optname=$(echo "$optname" | sed 's/-/_/g')
4061             if is_in $optname $CMDLINE_SET; then
4062                 eval $optname='$optval'
4063             elif is_in $optname $CMDLINE_APPEND; then
4064                 append $optname "$optval"
4065             else
4066                 die_unknown $opt
4067             fi
4068         ;;
4069     esac
4070 done
4071
4072 for e in $env; do
4073     eval "export $e"
4074 done
4075
4076 if disabled autodetect; then
4077
4078     # Unless iconv is explicitely disabled by the user, we still want to probe
4079     # for the iconv from the libc.
4080     disabled iconv || enable libc_iconv
4081
4082     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
4083     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
4084 fi
4085 # Mark specifically enabled, but normally autodetected libraries as requested.
4086 for lib in $AUTODETECT_LIBS; do
4087     enabled $lib && request $lib
4088 done
4089 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
4090 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
4091 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
4092
4093 disabled logging && logfile=/dev/null
4094
4095 # command line configuration sanity checks
4096
4097 # we need to build at least one lib type
4098 if ! enabled_any static shared; then
4099     cat <<EOF
4100 At least one library type must be built.
4101 Specify --enable-static to build the static libraries or --enable-shared to
4102 build the shared libraries as well. To only build the shared libraries specify
4103 --disable-static in addition to --enable-shared.
4104 EOF
4105     exit 1
4106 fi
4107
4108 die_license_disabled() {
4109     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
4110 }
4111
4112 die_license_disabled_gpl() {
4113     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
4114 }
4115
4116 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
4117 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
4118
4119 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
4120 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
4121
4122 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4123
4124 if enabled nonfree; then
4125     license="nonfree and unredistributable"
4126 elif enabled gplv3; then
4127     license="GPL version 3 or later"
4128 elif enabled lgplv3; then
4129     license="LGPL version 3 or later"
4130 elif enabled gpl; then
4131     license="GPL version 2 or later"
4132 else
4133     license="LGPL version 2.1 or later"
4134 fi
4135
4136 enabled_all gnutls openssl &&
4137     die "GnuTLS and OpenSSL must not be enabled at the same time."
4138
4139 enabled_all gnutls mbedtls &&
4140     die "GnuTLS and mbedTLS must not be enabled at the same time."
4141
4142 enabled_all openssl mbedtls &&
4143     die "OpenSSL and mbedTLS must not be enabled at the same time."
4144
4145 # Disable all the library-specific components if the library itself
4146 # is disabled, see AVCODEC_LIST and following _LIST variables.
4147
4148 disable_components(){
4149     disabled ${1} && disable $(
4150         eval components="\$$(toupper ${1})_COMPONENTS"
4151         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
4152     )
4153 }
4154
4155 map 'disable_components $v' $LIBRARY_LIST
4156
4157 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
4158 set >> $logfile
4159
4160 test -n "$valgrind" && toolchain="valgrind-memcheck"
4161
4162 enabled ossfuzz && ! echo $CFLAGS | grep -q -- "-fsanitize="  && ! echo $CFLAGS | grep -q -- "-fcoverage-mapping" &&{
4163     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
4164     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
4165 }
4166
4167 case "$toolchain" in
4168     *-asan)
4169         cc_default="${toolchain%-asan}"
4170         add_cflags  -fsanitize=address
4171         add_ldflags -fsanitize=address
4172     ;;
4173     *-msan)
4174         cc_default="${toolchain%-msan}"
4175         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
4176         add_ldflags -fsanitize=memory
4177     ;;
4178     *-tsan)
4179         cc_default="${toolchain%-tsan}"
4180         add_cflags  -fsanitize=thread
4181         add_ldflags -fsanitize=thread
4182         case "$toolchain" in
4183             gcc-tsan)
4184                 add_cflags  -fPIC
4185                 add_ldflags -fPIC
4186                 ;;
4187         esac
4188     ;;
4189     *-usan)
4190         cc_default="${toolchain%-usan}"
4191         add_cflags  -fsanitize=undefined
4192         add_ldflags -fsanitize=undefined
4193     ;;
4194     valgrind-*)
4195         target_exec_default="valgrind"
4196         case "$toolchain" in
4197             valgrind-massif)
4198                 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"
4199                 ;;
4200             valgrind-memcheck)
4201                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
4202                 ;;
4203         esac
4204     ;;
4205     msvc)
4206         # Check whether the current MSVC version needs the C99 converter.
4207         # From MSVC 2013 (compiler major version 18) onwards, it does actually
4208         # support enough of C99 to build ffmpeg. Default to the new
4209         # behaviour if the regexp was unable to match anything, since this
4210         # successfully parses the version number of existing supported
4211         # versions that require the converter (MSVC 2010 and 2012).
4212         cl_major_ver=$(cl.exe 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
4213         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
4214             cc_default="cl.exe"
4215             cxx_default="cl.exe"
4216         else
4217             die "Unsupported MSVC version (2013 or newer required)"
4218         fi
4219         ld_default="$source_path/compat/windows/mslink"
4220         nm_default="dumpbin.exe -symbols"
4221         ar_default="lib.exe"
4222         case "$arch" in
4223         aarch64|arm64)
4224             as_default="armasm64.exe"
4225             ;;
4226         arm*)
4227             as_default="armasm.exe"
4228             ;;
4229         esac
4230         target_os_default="win32"
4231         # Use a relative path for TMPDIR. This makes sure all the
4232         # ffconf temp files are written with a relative path, avoiding
4233         # issues with msys/win32 path conversion for MSVC parameters
4234         # such as -Fo<file> or -out:<file>.
4235         TMPDIR=.
4236     ;;
4237     icl)
4238         cc_default="icl"
4239         ld_default="xilink"
4240         nm_default="dumpbin -symbols"
4241         ar_default="xilib"
4242         target_os_default="win32"
4243         TMPDIR=.
4244     ;;
4245     gcov)
4246         add_cflags  -fprofile-arcs -ftest-coverage
4247         add_ldflags -fprofile-arcs -ftest-coverage
4248     ;;
4249     llvm-cov)
4250         add_cflags -fprofile-arcs -ftest-coverage
4251         add_ldflags --coverage
4252     ;;
4253     hardened)
4254         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
4255         add_cflags   -fno-strict-overflow -fstack-protector-all
4256         add_ldflags  -Wl,-z,relro -Wl,-z,now
4257         add_cflags   -fPIE
4258         add_ldexeflags -fPIE -pie
4259     ;;
4260     ?*)
4261         die "Unknown toolchain $toolchain"
4262     ;;
4263 esac
4264
4265 if test -n "$cross_prefix"; then
4266     test -n "$arch" && test -n "$target_os" ||
4267         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
4268     enable cross_compile
4269 fi
4270
4271 set_default target_os
4272 if test "$target_os" = android; then
4273     cc_default="clang"
4274 fi
4275
4276 ar_default="${cross_prefix}${ar_default}"
4277 cc_default="${cross_prefix}${cc_default}"
4278 cxx_default="${cross_prefix}${cxx_default}"
4279 nm_default="${cross_prefix}${nm_default}"
4280 pkg_config_default="${cross_prefix}${pkg_config_default}"
4281 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
4282     ranlib_default="${cross_prefix}${ranlib_default} -D"
4283 else
4284     ranlib_default="${cross_prefix}${ranlib_default}"
4285 fi
4286 strip_default="${cross_prefix}${strip_default}"
4287 windres_default="${cross_prefix}${windres_default}"
4288
4289 sysinclude_default="${sysroot}/usr/include"
4290
4291 if enabled cuda_sdk; then
4292     warn "Option --enable-cuda-sdk is deprecated. Use --enable-cuda-nvcc instead."
4293     enable cuda_nvcc
4294 fi
4295
4296 if enabled cuda_nvcc; then
4297     nvcc_default="nvcc"
4298     nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
4299 else
4300     nvcc_default="clang"
4301     nvccflags_default="--cuda-gpu-arch=sm_30 -O2"
4302     NVCC_C=""
4303 fi
4304
4305 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
4306     target_exec x86asmexe nvcc
4307 enabled cross_compile || host_cc_default=$cc
4308 set_default host_cc
4309
4310 pkg_config_fail_message=""
4311 if ! $pkg_config --version >/dev/null 2>&1; then
4312     warn "$pkg_config not found, library detection may fail."
4313     pkg_config=false
4314 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
4315     pkg_config_fail_message="
4316 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
4317 fi
4318
4319 if test $doxygen != $doxygen_default && \
4320   ! $doxygen --version >/dev/null 2>&1; then
4321     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
4322 fi
4323
4324 exesuf() {
4325     case $1 in
4326         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
4327     esac
4328 }
4329
4330 EXESUF=$(exesuf $target_os)
4331 HOSTEXESUF=$(exesuf $host_os)
4332
4333 # set temporary file name
4334 : ${TMPDIR:=$TEMPDIR}
4335 : ${TMPDIR:=$TMP}
4336 : ${TMPDIR:=/tmp}
4337
4338 if [ -n "$tempprefix" ] ; then
4339     mktemp(){
4340         tmpname="$tempprefix.${HOSTNAME}.${UID}"
4341         echo "$tmpname"
4342         mkdir "$tmpname"
4343     }
4344 elif ! test_cmd mktemp -u XXXXXX; then
4345     # simple replacement for missing mktemp
4346     # NOT SAFE FOR GENERAL USE
4347     mktemp(){
4348         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
4349         echo "$tmpname"
4350         mkdir "$tmpname"
4351     }
4352 fi
4353
4354 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
4355     die "Unable to create temporary directory in $TMPDIR."
4356
4357 tmpfile(){
4358     tmp="${FFTMPDIR}/test"$2
4359     (set -C; exec > $tmp) 2> /dev/null ||
4360         die "Unable to create temporary file in $FFTMPDIR."
4361     eval $1=$tmp
4362 }
4363
4364 trap 'rm -rf -- "$FFTMPDIR"' EXIT
4365 trap 'exit 2' INT
4366
4367 tmpfile TMPASM .asm
4368 tmpfile TMPC   .c
4369 tmpfile TMPCPP .cpp
4370 tmpfile TMPE   $EXESUF
4371 tmpfile TMPH   .h
4372 tmpfile TMPM   .m
4373 tmpfile TMPCU  .cu
4374 tmpfile TMPO   .o
4375 tmpfile TMPS   .S
4376 tmpfile TMPSH  .sh
4377 tmpfile TMPV   .ver
4378
4379 unset -f mktemp
4380
4381 chmod +x $TMPE
4382
4383 # make sure we can execute files in $TMPDIR
4384 cat > $TMPSH 2>> $logfile <<EOF
4385 #! /bin/sh
4386 EOF
4387 chmod +x $TMPSH >> $logfile 2>&1
4388 if ! $TMPSH >> $logfile 2>&1; then
4389     cat <<EOF
4390 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
4391 variable to another directory and make sure that it is not mounted noexec.
4392 EOF
4393     die "Sanity test failed."
4394 fi
4395
4396 armasm_flags(){
4397     for flag; do
4398         case $flag in
4399             # Filter out MSVC cl.exe options from cflags that shouldn't
4400             # be passed to gas-preprocessor
4401             -M[TD]*)                                            ;;
4402             *)                  echo $flag                      ;;
4403         esac
4404    done
4405 }
4406
4407 cparser_flags(){
4408     for flag; do
4409         case $flag in
4410             -Wno-switch)             echo -Wno-switch-enum ;;
4411             -Wno-format-zero-length) ;;
4412             -Wdisabled-optimization) ;;
4413             -Wno-pointer-sign)       echo -Wno-other ;;
4414             *)                       echo $flag ;;
4415         esac
4416     done
4417 }
4418
4419 msvc_common_flags(){
4420     for flag; do
4421         case $flag in
4422             # In addition to specifying certain flags under the compiler
4423             # specific filters, they must be specified here as well or else the
4424             # generic catch all at the bottom will print the original flag.
4425             -Wall)                ;;
4426             -Wextra)              ;;
4427             -std=c*)              ;;
4428             # Common flags
4429             -fomit-frame-pointer) ;;
4430             -g)                   echo -Z7 ;;
4431             -fno-math-errno)      ;;
4432             -fno-common)          ;;
4433             -fno-signed-zeros)    ;;
4434             -fPIC)                ;;
4435             -mthumb)              ;;
4436             -march=*)             ;;
4437             -lz)                  echo zlib.lib ;;
4438             -lx264)               echo libx264.lib ;;
4439             -lstdc++)             ;;
4440             -l*)                  echo ${flag#-l}.lib ;;
4441             -LARGEADDRESSAWARE)   echo $flag ;;
4442             -L*)                  echo -libpath:${flag#-L} ;;
4443             -Wl,*)                ;;
4444             *)                    echo $flag ;;
4445         esac
4446     done
4447 }
4448
4449 msvc_flags(){
4450     msvc_common_flags "$@"
4451     for flag; do
4452         case $flag in
4453             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4454                                        -wd4554 ;;
4455             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4456                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4457                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4458                                        -wd4307 \
4459                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4460         esac
4461     done
4462 }
4463
4464 icl_flags(){
4465     msvc_common_flags "$@"
4466     for flag; do
4467         case $flag in
4468             # Despite what Intel's documentation says -Wall, which is supported
4469             # on Windows, does enable remarks so disable them here.
4470             -Wall)                echo $flag -Qdiag-disable:remark ;;
4471             -std=c99)             echo -Qstd=c99 ;;
4472             -flto)                echo -ipo ;;
4473         esac
4474     done
4475 }
4476
4477 icc_flags(){
4478     for flag; do
4479         case $flag in
4480             -flto)                echo -ipo ;;
4481             *)                    echo $flag ;;
4482         esac
4483     done
4484 }
4485
4486 suncc_flags(){
4487     for flag; do
4488         case $flag in
4489             -march=*|-mcpu=*)
4490                 case "${flag#*=}" in
4491                     native)                   echo -xtarget=native       ;;
4492                     v9|niagara)               echo -xarch=sparc          ;;
4493                     ultrasparc)               echo -xarch=sparcvis       ;;
4494                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4495                     i586|pentium)             echo -xchip=pentium        ;;
4496                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4497                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4498                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4499                     pentium4*)          echo -xtarget=pentium4           ;;
4500                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4501                     *-sse3)             echo -xarch=sse3                 ;;
4502                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4503                     bonnell)                   echo -xarch=ssse3         ;;
4504                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4505                     westmere)                  echo -xtarget=westmere    ;;
4506                     silvermont)                echo -xarch=sse4_2        ;;
4507                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4508                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4509                                                echo -xarch=avx           ;;
4510                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4511                     btver1)                    echo -xarch=amdsse4a      ;;
4512                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4513                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4514                     k8|opteron|athlon64|athlon-fx)
4515                                                echo -xarch=sse2a         ;;
4516                     athlon*)                   echo -xarch=pentium_proa  ;;
4517                 esac
4518                 ;;
4519             -std=c99)             echo -xc99              ;;
4520             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4521             -fPIC)                echo -KPIC -xcode=pic32 ;;
4522             -W*,*)                echo $flag              ;;
4523             -f*-*|-W*|-mimpure-text)                      ;;
4524             -shared)              echo -G                 ;;
4525             *)                    echo $flag              ;;
4526         esac
4527     done
4528 }
4529
4530 probe_cc(){
4531     pfx=$1
4532     _cc=$2
4533     first=$3
4534
4535     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4536     unset _ld_o _ldflags _ld_lib _ld_path
4537     unset _depflags _DEPCMD _DEPFLAGS
4538     _flags_filter=echo
4539
4540     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4541         true # no-op to avoid reading stdin in following checks
4542     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4543         _type=llvm_gcc
4544         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4545         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4546         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4547         _cflags_speed='-O3'
4548         _cflags_size='-Os'
4549     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4550         _type=gcc
4551         gcc_version=$($_cc --version | head -n1)
4552         gcc_basever=$($_cc -dumpversion)
4553         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4554         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4555         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4556         case $gcc_basever in
4557             2) ;;
4558             2.*) ;;
4559             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4560         esac
4561         if [ "$first" = true ]; then
4562             case $gcc_basever in
4563                 4.2*)
4564                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4565             esac
4566         fi
4567         _cflags_speed='-O3'
4568         _cflags_size='-Os'
4569     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4570         _type=icc
4571         _ident=$($_cc --version | head -n1)
4572         _depflags='-MMD'
4573         _cflags_speed='-O3'
4574         _cflags_size='-Os'
4575         _cflags_noopt='-O1'
4576         _flags_filter=icc_flags
4577     elif $_cc -v 2>&1 | grep -q xlc; then
4578         _type=xlc
4579         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4580         _cflags_speed='-O5'
4581         _cflags_size='-O5 -qcompact'
4582     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4583         test -d "$sysroot" || die "No valid sysroot specified."
4584         _type=armcc
4585         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4586         armcc_conf="$PWD/armcc.conf"
4587         $_cc --arm_linux_configure                 \
4588              --arm_linux_config_file="$armcc_conf" \
4589              --configure_sysroot="$sysroot"        \
4590              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4591              die "Error creating armcc configuration file."
4592         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4593         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4594         as_default="${cross_prefix}gcc"
4595         _depflags='-MMD'
4596         _cflags_speed='-O3'
4597         _cflags_size='-Os'
4598     elif $_cc -v 2>&1 | grep -q clang && ! $_cc -? > /dev/null 2>&1; then
4599         _type=clang
4600         _ident=$($_cc --version 2>/dev/null | head -n1)
4601         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4602         _cflags_speed='-O3'
4603         _cflags_size='-Oz'
4604     elif $_cc -V 2>&1 | grep -q Sun; then
4605         _type=suncc
4606         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4607         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4608         _DEPFLAGS='-xM1 -xc99'
4609         _ldflags='-std=c99'
4610         _cflags_speed='-O5'
4611         _cflags_size='-O5 -xspace'
4612         _flags_filter=suncc_flags
4613     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4614         _type=pathscale
4615         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4616         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4617         _cflags_speed='-O2'
4618         _cflags_size='-Os'
4619         _flags_filter='filter_out -Wdisabled-optimization'
4620     elif $_cc -v 2>&1 | grep -q Open64; then
4621         _type=open64
4622         _ident=$($_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|-Wtype-limits|-fno-signed-zeros'
4627     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4628         _type=armasm
4629         _ident=$($_cc | head -n1)
4630         # 4509: "This form of conditional instruction is deprecated"
4631         _flags="-nologo -ignore 4509"
4632         _flags_filter=armasm_flags
4633     elif $_cc 2>&1 | grep -q Intel; then
4634         _type=icl
4635         _ident=$($_cc 2>&1 | head -n1)
4636         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4637         # Not only is O3 broken on 13.x+ but it is slower on all previous
4638         # versions (tested) as well.
4639         _cflags_speed="-O2"
4640         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4641         if $_cc 2>&1 | grep -q Linker; then
4642             _ld_o='-out:$@'
4643         else
4644             _ld_o='-Fe$@'
4645         fi
4646         _cc_o='-Fo$@'
4647         _cc_e='-P'
4648         _flags_filter=icl_flags
4649         _ld_lib='lib%.a'
4650         _ld_path='-libpath:'
4651         # -Qdiag-error to make icl error when seeing certain unknown arguments
4652         _flags='-nologo -Qdiag-error:4044,10157'
4653         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4654         # with MSVC which enables it by default.
4655         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4656         disable stripping
4657     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4658         # lld can emulate multiple different linkers; in ms link.exe mode,
4659         # the -? parameter gives the help output which contains an identifyable
4660         # string, while it gives an error in other modes.
4661         _type=lld-link
4662         # The link.exe mode doesn't have a switch for getting the version,
4663         # but we can force it back to gnu mode and get the version from there.
4664         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4665         _ld_o='-out:$@'
4666         _flags_filter=msvc_flags
4667         _ld_lib='lib%.a'
4668         _ld_path='-libpath:'
4669     elif $_cc -nologo- 2>&1 | grep -q Microsoft || { $_cc -v 2>&1 | grep -q clang && $_cc -? > /dev/null 2>&1; }; then
4670         _type=msvc
4671         if $_cc -nologo- 2>&1 | grep -q Microsoft; then
4672             _ident=$($_cc 2>&1 | head -n1 | tr -d '\r')
4673         else
4674             _ident=$($_cc --version 2>/dev/null | head -n1 | tr -d '\r')
4675         fi
4676         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4677         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4678         _cflags_speed="-O2"
4679         _cflags_size="-O1"
4680         _cflags_noopt="-O1"
4681         if $_cc -nologo- 2>&1 | grep -q Linker; then
4682             _ld_o='-out:$@'
4683         else
4684             _ld_o='-Fe$@'
4685         fi
4686         _cc_o='-Fo$@'
4687         _cc_e='-P -Fi$@'
4688         _flags_filter=msvc_flags
4689         _ld_lib='lib%.a'
4690         _ld_path='-libpath:'
4691         _flags='-nologo'
4692         disable stripping
4693     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4694         _type=cparser
4695         _ident=$($_cc --version | head -n1)
4696         _depflags='-MMD'
4697         _cflags_speed='-O4'
4698         _cflags_size='-O2'
4699         _flags_filter=cparser_flags
4700     fi
4701
4702     eval ${pfx}_type=\$_type
4703     eval ${pfx}_ident=\$_ident
4704 }
4705
4706 set_ccvars(){
4707     eval ${1}_C=\${_cc_c-\${${1}_C}}
4708     eval ${1}_E=\${_cc_e-\${${1}_E}}
4709     eval ${1}_O=\${_cc_o-\${${1}_O}}
4710
4711     if [ -n "$_depflags" ]; then
4712         eval ${1}_DEPFLAGS=\$_depflags
4713     else
4714         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4715         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4716         eval DEP${1}FLAGS=\$_flags
4717     fi
4718 }
4719
4720 probe_cc cc "$cc" "true"
4721 cflags_filter=$_flags_filter
4722 cflags_speed=$_cflags_speed
4723 cflags_size=$_cflags_size
4724 cflags_noopt=$_cflags_noopt
4725 add_cflags $_flags $_cflags
4726 cc_ldflags=$_ldflags
4727 set_ccvars CC
4728 set_ccvars CXX
4729
4730 probe_cc hostcc "$host_cc"
4731 host_cflags_filter=$_flags_filter
4732 host_cflags_speed=$_cflags_speed
4733 add_host_cflags  $_flags $_cflags
4734 set_ccvars HOSTCC
4735
4736 test -n "$cc_type" && enable $cc_type ||
4737     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4738
4739 : ${as_default:=$cc}
4740 : ${objcc_default:=$cc}
4741 : ${dep_cc_default:=$cc}
4742 : ${ld_default:=$cc}
4743 : ${host_ld_default:=$host_cc}
4744 set_default ar as objcc dep_cc ld ln_s host_ld windres
4745
4746 probe_cc as "$as"
4747 asflags_filter=$_flags_filter
4748 add_asflags $_flags $_cflags
4749 set_ccvars AS
4750
4751 probe_cc objcc "$objcc"
4752 objcflags_filter=$_flags_filter
4753 add_objcflags $_flags $_cflags
4754 set_ccvars OBJC
4755
4756 probe_cc ld "$ld"
4757 ldflags_filter=$_flags_filter
4758 add_ldflags $_flags $_ldflags
4759 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4760 LD_O=${_ld_o-$LD_O}
4761 LD_LIB=${_ld_lib-$LD_LIB}
4762 LD_PATH=${_ld_path-$LD_PATH}
4763
4764 probe_cc hostld "$host_ld"
4765 host_ldflags_filter=$_flags_filter
4766 add_host_ldflags $_flags $_ldflags
4767 HOSTLD_O=${_ld_o-$HOSTLD_O}
4768
4769 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4770     probe_cc depcc "$dep_cc"
4771     CCDEP=${_DEPCMD:-$DEPCMD}
4772     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4773     DEPCCFLAGS=$_flags
4774 fi
4775
4776 if $ar 2>&1 | grep -q Microsoft; then
4777     arflags="-nologo"
4778     ar_o='-out:$@'
4779 elif $ar 2>&1 | grep -q "\[D\] "; then
4780     arflags="rcD"
4781     ar_o='$@'
4782 else
4783     arflags="rc"
4784     ar_o='$@'
4785 fi
4786
4787 add_cflags $extra_cflags
4788 add_cxxflags $extra_cxxflags
4789 add_objcflags $extra_objcflags
4790 add_asflags $extra_cflags
4791
4792 if test -n "$sysroot"; then
4793     case "$cc_type" in
4794         gcc|llvm_gcc|clang)
4795             add_cppflags --sysroot="$sysroot"
4796             add_ldflags --sysroot="$sysroot"
4797         ;;
4798     esac
4799 fi
4800
4801 if test "$cpu" = host; then
4802     enabled cross_compile &&
4803         warn "--cpu=host makes no sense when cross-compiling."
4804
4805     case "$cc_type" in
4806         gcc|llvm_gcc)
4807             check_native(){
4808                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4809                 sed -n "/cc1.*$1=/{
4810                             s/.*$1=\\([^ ]*\\).*/\\1/
4811                             p
4812                             q
4813                         }" $TMPE
4814             }
4815             cpu=$(check_native -march || check_native -mcpu)
4816         ;;
4817         clang)
4818             check_native(){
4819                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4820                 sed -n "/cc1.*-target-cpu /{
4821                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4822                             p
4823                             q
4824                         }" $TMPE
4825             }
4826             cpu=$(check_native -march)
4827         ;;
4828     esac
4829
4830     test "${cpu:-host}" = host &&
4831         die "--cpu=host not supported with compiler $cc"
4832 fi
4833
4834 # Deal with common $arch aliases
4835 case "$arch" in
4836     aarch64|arm64)
4837         arch="aarch64"
4838     ;;
4839     arm*|iPad*|iPhone*)
4840         arch="arm"
4841     ;;
4842     mips*|IP*)
4843         case "$arch" in
4844         *el)
4845             add_cppflags -EL
4846             add_ldflags -EL
4847         ;;
4848         *eb)
4849             add_cppflags -EB
4850             add_ldflags -EB
4851         ;;
4852         esac
4853         arch="mips"
4854     ;;
4855     parisc*|hppa*)
4856         arch="parisc"
4857     ;;
4858     "Power Macintosh"|ppc*|powerpc*)
4859         arch="ppc"
4860     ;;
4861     s390|s390x)
4862         arch="s390"
4863     ;;
4864     sh4|sh)
4865         arch="sh4"
4866     ;;
4867     sun4*|sparc*)
4868         arch="sparc"
4869     ;;
4870     tilegx|tile-gx)
4871         arch="tilegx"
4872     ;;
4873     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4874         arch="x86"
4875     ;;
4876 esac
4877
4878 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4879 enable $arch
4880
4881 # Add processor-specific flags
4882 if enabled aarch64; then
4883
4884     case $cpu in
4885         armv*)
4886             cpuflags="-march=$cpu"
4887         ;;
4888         *)
4889             cpuflags="-mcpu=$cpu"
4890         ;;
4891     esac
4892
4893 elif enabled alpha; then
4894
4895     cpuflags="-mcpu=$cpu"
4896
4897 elif enabled arm; then
4898
4899     check_arm_arch() {
4900         test_cpp_condition stddef.h \
4901             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4902             $cpuflags
4903     }
4904
4905     probe_arm_arch() {
4906         if   check_arm_arch 4;        then echo armv4
4907         elif check_arm_arch 4T;       then echo armv4t
4908         elif check_arm_arch 5;        then echo armv5
4909         elif check_arm_arch 5E;       then echo armv5e
4910         elif check_arm_arch 5T;       then echo armv5t
4911         elif check_arm_arch 5TE;      then echo armv5te
4912         elif check_arm_arch 5TEJ;     then echo armv5te
4913         elif check_arm_arch 6;        then echo armv6
4914         elif check_arm_arch 6J;       then echo armv6j
4915         elif check_arm_arch 6K;       then echo armv6k
4916         elif check_arm_arch 6Z;       then echo armv6z
4917         elif check_arm_arch 6KZ;      then echo armv6zk
4918         elif check_arm_arch 6ZK;      then echo armv6zk
4919         elif check_arm_arch 6T2;      then echo armv6t2
4920         elif check_arm_arch 7;        then echo armv7
4921         elif check_arm_arch 7A  7_A;  then echo armv7-a
4922         elif check_arm_arch 7S;       then echo armv7-a
4923         elif check_arm_arch 7R  7_R;  then echo armv7-r
4924         elif check_arm_arch 7M  7_M;  then echo armv7-m
4925         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4926         elif check_arm_arch 8A  8_A;  then echo armv8-a
4927         fi
4928     }
4929
4930     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4931
4932     case $cpu in
4933         armv*)
4934             cpuflags="-march=$cpu"
4935             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4936         ;;
4937         *)
4938             cpuflags="-mcpu=$cpu"
4939             case $cpu in
4940                 cortex-a*)                               subarch=armv7a  ;;
4941                 cortex-r*)                               subarch=armv7r  ;;
4942                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4943                 arm11*)                                  subarch=armv6   ;;
4944                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4945                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4946                 *)                             subarch=$(probe_arm_arch) ;;
4947             esac
4948         ;;
4949     esac
4950
4951     case "$subarch" in
4952         armv5t*)    enable fast_clz                ;;
4953         armv[6-8]*)
4954             enable fast_clz
4955             disabled fast_unaligned || enable fast_unaligned
4956             ;;
4957     esac
4958
4959 elif enabled avr32; then
4960
4961     case $cpu in
4962         ap7[02]0[0-2])
4963             subarch="avr32_ap"
4964             cpuflags="-mpart=$cpu"
4965         ;;
4966         ap)
4967             subarch="avr32_ap"
4968             cpuflags="-march=$cpu"
4969         ;;
4970         uc3[ab]*)
4971             subarch="avr32_uc"
4972             cpuflags="-mcpu=$cpu"
4973         ;;
4974         uc)
4975             subarch="avr32_uc"
4976             cpuflags="-march=$cpu"
4977         ;;
4978     esac
4979
4980 elif enabled bfin; then
4981
4982     cpuflags="-mcpu=$cpu"
4983
4984 elif enabled mips; then
4985
4986     cpuflags="-march=$cpu"
4987
4988     if [ "$cpu" != "generic" ]; then
4989         disable mips32r2
4990         disable mips32r5
4991         disable mips64r2
4992         disable mips32r6
4993         disable mips64r6
4994         disable loongson2
4995         disable loongson3
4996
4997         case $cpu in
4998             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4999                 enable mips32r2
5000                 disable msa
5001             ;;
5002             p5600|i6400|p6600)
5003                 disable mipsdsp
5004                 disable mipsdspr2
5005             ;;
5006             loongson*)
5007                 enable loongson2
5008                 enable loongson3
5009                 enable local_aligned
5010                 enable simd_align_16
5011                 enable fast_64bit
5012                 enable fast_clz
5013                 enable fast_cmov
5014                 enable fast_unaligned
5015                 disable aligned_stack
5016                 disable mipsdsp
5017                 disable mipsdspr2
5018                 # When gcc version less than 5.3.0, add -fno-expensive-optimizations flag.
5019                 if [ $cc == gcc ]; then
5020                     gcc_version=$(gcc -dumpversion)
5021                     if [ "$(echo "$gcc_version 5.3.0" | tr " " "\n" | sort -rV | head -n 1)" == "$gcc_version" ]; then
5022                         expensive_optimization_flag=""
5023                     else
5024                         expensive_optimization_flag="-fno-expensive-optimizations"
5025                     fi
5026                 fi
5027                 case $cpu in
5028                     loongson3*)
5029                         cpuflags="-march=loongson3a -mhard-float $expensive_optimization_flag"
5030                     ;;
5031                     loongson2e)
5032                         cpuflags="-march=loongson2e -mhard-float $expensive_optimization_flag"
5033                     ;;
5034                     loongson2f)
5035                         cpuflags="-march=loongson2f -mhard-float $expensive_optimization_flag"
5036                     ;;
5037                 esac
5038             ;;
5039             *)
5040                 # Unknown CPU. Disable everything.
5041                 warn "unknown CPU. Disabling all MIPS optimizations."
5042                 disable mipsfpu
5043                 disable mipsdsp
5044                 disable mipsdspr2
5045                 disable msa
5046                 disable mmi
5047             ;;
5048         esac
5049
5050         case $cpu in
5051             24kc)
5052                 disable mipsfpu
5053                 disable mipsdsp
5054                 disable mipsdspr2
5055             ;;
5056             24kf*)
5057                 disable mipsdsp
5058                 disable mipsdspr2
5059             ;;
5060             24kec|34kc|1004kc)
5061                 disable mipsfpu
5062                 disable mipsdspr2
5063             ;;
5064             24kef*|34kf*|1004kf*)
5065                 disable mipsdspr2
5066             ;;
5067             74kc)
5068                 disable mipsfpu
5069             ;;
5070             p5600)
5071                 enable mips32r5
5072                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
5073             ;;
5074             i6400)
5075                 enable mips64r6
5076                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
5077             ;;
5078             p6600)
5079                 enable mips64r6
5080                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
5081             ;;
5082         esac
5083     else
5084         # We do not disable anything. Is up to the user to disable the unwanted features.
5085         warn 'generic cpu selected'
5086     fi
5087
5088 elif enabled ppc; then
5089
5090     disable ldbrx
5091
5092     case $(tolower $cpu) in
5093         601|ppc601|powerpc601)
5094             cpuflags="-mcpu=601"
5095             disable altivec
5096         ;;
5097         603*|ppc603*|powerpc603*)
5098             cpuflags="-mcpu=603"
5099             disable altivec
5100         ;;
5101         604*|ppc604*|powerpc604*)
5102             cpuflags="-mcpu=604"
5103             disable altivec
5104         ;;
5105         g3|75*|ppc75*|powerpc75*)
5106             cpuflags="-mcpu=750"
5107             disable altivec
5108         ;;
5109         g4|745*|ppc745*|powerpc745*)
5110             cpuflags="-mcpu=7450"
5111             disable vsx
5112         ;;
5113         74*|ppc74*|powerpc74*)
5114             cpuflags="-mcpu=7400"
5115             disable vsx
5116         ;;
5117         g5|970|ppc970|powerpc970)
5118             cpuflags="-mcpu=970"
5119             disable vsx
5120         ;;
5121         power[3-6]*)
5122             cpuflags="-mcpu=$cpu"
5123             disable vsx
5124         ;;
5125         power[7-8]*)
5126             cpuflags="-mcpu=$cpu"
5127         ;;
5128         cell)
5129             cpuflags="-mcpu=cell"
5130             enable ldbrx
5131             disable vsx
5132         ;;
5133         e500mc)
5134             cpuflags="-mcpu=e500mc"
5135             disable altivec
5136         ;;
5137         e500v2)
5138             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
5139             disable altivec
5140             disable dcbzl
5141         ;;
5142         e500)
5143             cpuflags="-mcpu=8540 -mhard-float"
5144             disable altivec
5145             disable dcbzl
5146         ;;
5147     esac
5148
5149 elif enabled sparc; then
5150
5151     case $cpu in
5152         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
5153             cpuflags="-mcpu=$cpu"
5154         ;;
5155         ultrasparc*|niagara[234])
5156             cpuflags="-mcpu=$cpu"
5157         ;;
5158     esac
5159
5160 elif enabled x86; then
5161
5162     case $cpu in
5163         i[345]86|pentium)
5164             cpuflags="-march=$cpu"
5165             disable i686
5166             disable mmx
5167         ;;
5168         # targets that do NOT support nopl and conditional mov (cmov)
5169         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
5170             cpuflags="-march=$cpu"
5171             disable i686
5172         ;;
5173         # targets that do support nopl and conditional mov (cmov)
5174         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
5175         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
5176         |amdfam10|barcelona|b[dt]ver*|znver*)
5177             cpuflags="-march=$cpu"
5178             enable i686
5179             enable fast_cmov
5180         ;;
5181         # targets that do support conditional mov but on which it's slow
5182         pentium4|pentium4m|prescott|nocona)
5183             cpuflags="-march=$cpu"
5184             enable i686
5185             disable fast_cmov
5186         ;;
5187     esac
5188
5189 fi
5190
5191 if [ "$cpu" != generic ]; then
5192     add_cflags  $cpuflags
5193     add_asflags $cpuflags
5194     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
5195 fi
5196
5197 # compiler sanity check
5198 test_exec <<EOF
5199 int main(void){ return 0; }
5200 EOF
5201 if test "$?" != 0; then
5202     echo "$cc is unable to create an executable file."
5203     if test -z "$cross_prefix" && ! enabled cross_compile ; then
5204         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
5205         echo "Only do this if you know what cross compiling means."
5206     fi
5207     die "C compiler test failed."
5208 fi
5209
5210 add_cppflags -D_ISOC99_SOURCE
5211 add_cxxflags -D__STDC_CONSTANT_MACROS
5212 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
5213
5214 # some compilers silently accept -std=c11, so we also need to check that the
5215 # version macro is defined properly
5216 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
5217     add_cflags -std=c11 ||
5218     check_cflags -std=c99
5219
5220 check_cppflags -D_FILE_OFFSET_BITS=64
5221 check_cppflags -D_LARGEFILE_SOURCE
5222
5223 add_host_cppflags -D_ISOC99_SOURCE
5224 check_host_cflags -std=c99
5225 check_host_cflags -Wall
5226 check_host_cflags $host_cflags_speed
5227
5228 check_64bit(){
5229     arch32=$1
5230     arch64=$2
5231     expr=${3:-'sizeof(void *) > 4'}
5232     test_code cc "" "int test[2*($expr) - 1]" &&
5233         subarch=$arch64 || subarch=$arch32
5234     enable $subarch
5235 }
5236
5237 case "$arch" in
5238     aarch64|alpha|ia64)
5239         enabled shared && enable_weak pic
5240     ;;
5241     mips)
5242         check_64bit mips mips64 '_MIPS_SIM > 1'
5243         enabled shared && enable_weak pic
5244     ;;
5245     parisc)
5246         check_64bit parisc parisc64
5247         enabled shared && enable_weak pic
5248     ;;
5249     ppc)
5250         check_64bit ppc ppc64
5251         enabled shared && enable_weak pic
5252     ;;
5253     s390)
5254         check_64bit s390 s390x
5255         enabled shared && enable_weak pic
5256     ;;
5257     sparc)
5258         check_64bit sparc sparc64
5259         enabled shared && enable_weak pic
5260     ;;
5261     x86)
5262         check_64bit x86_32 x86_64
5263         # Treat x32 as x64 for now. Note it also needs pic if shared
5264         test "$subarch" = "x86_32" && test_cpp_condition stddef.h 'defined(__x86_64__)' &&
5265             subarch=x86_64 && enable x86_64 && disable x86_32
5266         if enabled x86_64; then
5267             enabled shared && enable_weak pic
5268             objformat=elf64
5269         fi
5270     ;;
5271 esac
5272
5273 # OS specific
5274 case $target_os in
5275     aix)
5276         SHFLAGS=-shared
5277         add_cppflags '-I\$(SRC_PATH)/compat/aix'
5278         enabled shared && add_ldflags -Wl,-brtl
5279         arflags='-Xany -r -c'
5280         striptype=""
5281         ;;
5282     android)
5283         disable symver
5284         enable section_data_rel_ro
5285         add_cflags -fPIE
5286         add_ldexeflags -fPIE -pie
5287         SLIB_INSTALL_NAME='$(SLIBNAME)'
5288         SLIB_INSTALL_LINKS=
5289         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
5290         ;;
5291     haiku)
5292         prefix_default="/boot/common"
5293         network_extralibs="-lnetwork"
5294         host_extralibs=
5295         ;;
5296     sunos)
5297         SHFLAGS='-shared -Wl,-h,$$(@F)'
5298         enabled x86 && append SHFLAGS -mimpure-text
5299         network_extralibs="-lsocket -lnsl"
5300         add_cppflags -D__EXTENSIONS__
5301         # When using suncc to build, the Solaris linker will mark
5302         # an executable with each instruction set encountered by
5303         # the Solaris assembler.  As our libraries contain their own
5304         # guards for processor-specific code, instead suppress
5305         # generation of the HWCAPS ELF section on Solaris x86 only.
5306         enabled_all suncc x86 &&
5307             echo "hwcap_1 = OVERRIDE;" > mapfile &&
5308             add_ldflags -Wl,-M,mapfile
5309         nm_default='nm -P -g'
5310         striptype=""
5311         version_script='-M'
5312         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
5313         ;;
5314     netbsd)
5315         disable symver
5316         oss_indev_extralibs="-lossaudio"
5317         oss_outdev_extralibs="-lossaudio"
5318         enabled gcc || check_ldflags -Wl,-zmuldefs
5319         ;;
5320     openbsd|bitrig)
5321         disable symver
5322         enable section_data_rel_ro
5323         striptype=""
5324         SHFLAGS='-shared'
5325         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
5326         SLIB_INSTALL_LINKS=
5327         oss_indev_extralibs="-lossaudio"
5328         oss_outdev_extralibs="-lossaudio"
5329         ;;
5330     dragonfly)
5331         disable symver
5332         ;;
5333     freebsd)
5334         ;;
5335     bsd/os)
5336         add_extralibs -lpoll -lgnugetopt
5337         strip="strip -d"
5338         ;;
5339     darwin)
5340         enabled ppc && add_asflags -force_cpusubtype_ALL
5341         install_name_dir_default='$(SHLIBDIR)'
5342         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
5343         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
5344         strip="${strip} -x"
5345         add_ldflags -Wl,-dynamic,-search_paths_first
5346         check_cflags -Werror=partial-availability
5347         SLIBSUF=".dylib"
5348         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
5349         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
5350         enabled x86_64 && objformat="macho64" || objformat="macho32"
5351         enabled_any pic shared x86_64 ||
5352             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
5353         check_headers dispatch/dispatch.h &&
5354             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
5355         if test -n "$sysroot"; then
5356             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
5357             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
5358         fi
5359         version_script='-exported_symbols_list'
5360         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
5361         ;;
5362     msys*)
5363         die "Native MSYS builds are discouraged, please use the MINGW environment."
5364         ;;
5365     mingw32*|mingw64*)
5366         target_os=mingw32
5367         LIBTARGET=i386
5368         if enabled x86_64; then
5369             LIBTARGET="i386:x86-64"
5370         elif enabled arm; then
5371             LIBTARGET="arm"
5372         elif enabled aarch64; then
5373             LIBTARGET="arm64"
5374         fi
5375         if enabled shared; then
5376             # Cannot build both shared and static libs when using dllimport.
5377             disable static
5378         fi
5379         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5380         enabled x86_32 && check_ldflags -Wl,--large-address-aware
5381         shlibdir_default="$bindir_default"
5382         SLIBPREF=""
5383         SLIBSUF=".dll"
5384         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5385         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5386         if test_cmd lib.exe -list; then
5387             SLIB_EXTRA_CMD=-'lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5388             if enabled x86_64; then
5389                 LIBTARGET=x64
5390             fi
5391         else
5392             SLIB_EXTRA_CMD=-'$(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
5393         fi
5394         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5395         SLIB_INSTALL_LINKS=
5396         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5397         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5398         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5399         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--disable-auto-image-base $$(@:$(SLIBSUF)=.def)'
5400         enabled x86_64 && objformat="win64" || objformat="win32"
5401         dlltool="${cross_prefix}dlltool"
5402         ranlib=:
5403         enable dos_paths
5404         check_ldflags -Wl,--nxcompat,--dynamicbase
5405         # Lets work around some stupidity in binutils.
5406         # ld will strip relocations from executables even though we need them
5407         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
5408         # however ld then forgets what the entry point should be (oops) so we
5409         # have to manually (re)set it.
5410         if enabled x86_32; then
5411             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
5412         elif enabled x86_64; then
5413             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
5414             check_ldflags -Wl,--high-entropy-va # binutils 2.25
5415             # Set image base >4GB for extra entropy with HEASLR
5416             add_ldexeflags -Wl,--image-base,0x140000000
5417             append SHFLAGS -Wl,--image-base,0x180000000
5418         fi
5419         ;;
5420     win32|win64)
5421         disable symver
5422         if enabled shared; then
5423             # Link to the import library instead of the normal static library
5424             # for shared libs.
5425             LD_LIB='%.lib'
5426             # Cannot build both shared and static libs with MSVC or icl.
5427             disable static
5428         fi
5429         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
5430         shlibdir_default="$bindir_default"
5431         SLIBPREF=""
5432         SLIBSUF=".dll"
5433         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5434         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5435         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5436         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5437         SLIB_INSTALL_LINKS=
5438         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5439         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5440         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5441         enabled x86_64 && objformat="win64" || objformat="win32"
5442         ranlib=:
5443         enable dos_paths
5444         ;;
5445     cygwin*)
5446         target_os=cygwin
5447         shlibdir_default="$bindir_default"
5448         SLIBPREF="cyg"
5449         SLIBSUF=".dll"
5450         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5451         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5452         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5453         SLIB_INSTALL_LINKS=
5454         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5455         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5456         enabled x86_64 && objformat="win64" || objformat="win32"
5457         enable dos_paths
5458         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5459         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5460         ;;
5461     *-dos|freedos|opendos)
5462         network_extralibs="-lsocket"
5463         objformat="coff"
5464         enable dos_paths
5465         ;;
5466     linux)
5467         enable section_data_rel_ro
5468         enabled_any arm aarch64 && enable_weak linux_perf
5469         ;;
5470     irix*)
5471         target_os=irix
5472         ranlib="echo ignoring ranlib"
5473         ;;
5474     os/2*)
5475         strip="lxlite -CS"
5476         striptype=""
5477         objformat="aout"
5478         add_cppflags -D_GNU_SOURCE
5479         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5480         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5481         LIBSUF="_s.a"
5482         SLIBPREF=""
5483         SLIBSUF=".dll"
5484         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5485         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5486         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5487             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5488             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5489             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5490             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5491         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5492             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5493         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5494         SLIB_INSTALL_LINKS=
5495         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5496         enable dos_paths
5497         enable_weak os2threads
5498         ;;
5499     gnu/kfreebsd)
5500         add_cppflags -D_BSD_SOURCE
5501         ;;
5502     gnu)
5503         ;;
5504     qnx)
5505         add_cppflags -D_QNX_SOURCE
5506         network_extralibs="-lsocket"
5507         ;;
5508     symbian)
5509         SLIBSUF=".dll"
5510         enable dos_paths
5511         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5512         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5513         add_ldflags -Wl,--target1-abs,--no-undefined \
5514                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5515                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5516         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5517                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5518                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5519         ;;
5520     minix)
5521         ;;
5522     none)
5523         ;;
5524     *)
5525         die "Unknown OS '$target_os'."
5526         ;;
5527 esac
5528
5529 # test if creating links works
5530 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5531 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5532 mkdir "$link_dest"
5533 $ln_s "$link_dest" "$link_name"
5534 touch "$link_dest/test_file"
5535 if [ "$source_path" != "." ] && [ "$source_path" != "src" ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5536     # create link to source path
5537     [ -e src ] && rm src
5538     $ln_s "$source_path" src
5539     source_link=src
5540 else
5541     # creating directory links doesn't work
5542     # fall back to using the full source path
5543     source_link="$source_path"
5544 fi
5545 # cleanup
5546 rm -r "$link_dest"
5547 rm -r "$link_name"
5548
5549 # determine libc flavour
5550
5551 probe_libc(){
5552     pfx=$1
5553     pfx_no_=${pfx%_}
5554     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5555     if test_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5556         eval ${pfx}libc_type=uclibc
5557         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5558     elif test_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5559         eval ${pfx}libc_type=glibc
5560         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5561     # MinGW headers can be installed on Cygwin, so check for newlib first.
5562     elif test_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5563         eval ${pfx}libc_type=newlib
5564         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5565     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5566     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5567         eval ${pfx}libc_type=mingw64
5568         if test_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5569             add_compat msvcrt/snprintf.o
5570             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5571         fi
5572         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5573         eval test \$${pfx_no_}cc_type = "gcc" &&
5574             add_${pfx}cppflags -D__printf__=__gnu_printf__
5575         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5576             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5577         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5578     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5579          test_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5580         eval ${pfx}libc_type=mingw32
5581         test_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5582             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5583             die "ERROR: MinGW32 runtime version must be >= 3.15."
5584         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5585         test_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5586             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5587         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5588             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5589         eval test \$${pfx_no_}cc_type = "gcc" &&
5590             add_${pfx}cppflags -D__printf__=__gnu_printf__
5591         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5592     elif test_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5593         eval ${pfx}libc_type=msvcrt
5594         if test_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5595             if [ "$pfx" = host_ ]; then
5596                 add_host_cppflags -Dsnprintf=_snprintf
5597             else
5598                 add_compat strtod.o strtod=avpriv_strtod
5599                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5600                                              _snprintf=avpriv_snprintf  \
5601                                              vsnprintf=avpriv_vsnprintf
5602             fi
5603         fi
5604         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5605         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5606         # 0x601 by default unless something else is set by the user.
5607         # This can easily lead to us detecting functions only present
5608         # in such new versions and producing binaries requiring windows 7.0.
5609         # Therefore explicitly set the default to Vista unless the user has
5610         # set something else on the command line.
5611         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5612         # family. For these cases, configure is free to use any functions
5613         # found in the SDK headers by default. (Alternatively, we could force
5614         # _WIN32_WINNT to 0x0602 in that case.)
5615         test_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5616             { test_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0600; }
5617 #ifdef WINAPI_FAMILY
5618 #include <winapifamily.h>
5619 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5620 #error not desktop
5621 #endif
5622 #endif
5623 EOF
5624         if [ "$pfx" = "" ]; then
5625             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5626             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5627         fi
5628     elif test_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5629         eval ${pfx}libc_type=klibc
5630     elif test_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5631         eval ${pfx}libc_type=bionic
5632     elif test_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5633         eval ${pfx}libc_type=solaris
5634         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5635     elif test_${pfx}cpp_condition sys/version.h "defined __DJGPP__"; then
5636         eval ${pfx}libc_type=djgpp
5637         add_cppflags -U__STRICT_ANSI__
5638         add_cflags "-include $source_path/compat/djgpp/math.h"
5639         add_compat djgpp/math.o
5640     fi
5641     test_${pfx}cc <<EOF
5642 #include <time.h>
5643 void *v = localtime_r;
5644 EOF
5645 test "$?" != 0 && test_${pfx}cc -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 <<EOF && add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5646 #include <time.h>
5647 void *v = localtime_r;
5648 EOF
5649
5650     eval test -n "\${${pfx}libc_type}" && enable ${pfx}libc_${libc_type}
5651 }
5652
5653 probe_libc
5654 probe_libc host_
5655
5656 # hacks for compiler/libc/os combinations
5657
5658 case $libc_type in
5659     bionic)
5660         add_compat strtod.o strtod=avpriv_strtod
5661         ;;
5662 esac
5663
5664 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5665     add_cppflags '-I\$(SRC_PATH)/compat/float'
5666
5667 test_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5668
5669 set_default libdir
5670 : ${shlibdir_default:="$libdir"}
5671 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5672
5673 set_default $PATHS_LIST
5674 set_default nm
5675
5676 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5677
5678 enable_weak_pic() {
5679     disabled pic && return
5680     enable pic
5681     add_cppflags -DPIC
5682     case "$target_os" in
5683     mingw*|cygwin*|win*)
5684         ;;
5685     *)
5686         add_cflags -fPIC
5687         add_asflags -fPIC
5688         ;;
5689     esac
5690 }
5691
5692 enabled pic && enable_weak_pic
5693
5694 test_cc <<EOF || die "Symbol mangling check failed."
5695 int ff_extern;
5696 EOF
5697 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5698 extern_prefix=${sym%%ff_extern*}
5699
5700 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
5701
5702 for restrict_keyword in restrict __restrict__ __restrict ""; do
5703     test_code cc "" "char * $restrict_keyword p" && break
5704 done
5705
5706 check_cc pragma_deprecated "" '_Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"")'
5707
5708 # The global variable ensures the bits appear unchanged in the object file.
5709 test_cc <<EOF || die "endian test failed"
5710 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5711 EOF
5712 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5713
5714 check_cc const_nan math.h "struct { double d; } static const bar[] = { { NAN } }"
5715
5716 if ! enabled ppc64 || enabled bigendian; then
5717     disable vsx
5718 fi
5719
5720 check_gas() {
5721     log "check_gas using '$as' as AS"
5722     # :vararg is used on aarch64, arm and ppc altivec
5723     check_as vararg "
5724 .macro m n, y:vararg=0
5725 \n: .int \y
5726 .endm
5727 m x" || return 1
5728     # .altmacro is only used in arm asm
5729     ! enabled arm || check_as gnu_as ".altmacro"
5730 }
5731
5732 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5733     nogas=:
5734     enabled_any arm aarch64 && nogas=die
5735     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5736     as_noop=-v
5737
5738     case $as_type in
5739         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5740         gcc)  gaspp_as_type=gas ;;
5741         *)    gaspp_as_type=$as_type ;;
5742     esac
5743
5744     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5745
5746     test "${as#*gas-preprocessor.pl}" != "$as" ||
5747     test_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5748         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5749
5750     if ! check_gas ; then
5751         as=${gas:=$as}
5752         check_gas || \
5753             $nogas "GNU assembler not found, install/update gas-preprocessor"
5754     fi
5755
5756     check_as as_func ".func test
5757                       .endfunc"
5758 fi
5759
5760 check_inline_asm inline_asm_labels '"1:\n"'
5761
5762 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5763
5764 if enabled aarch64; then
5765     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5766     # internal assembler in clang 3.3 does not support this instruction
5767     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5768     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5769
5770     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5771
5772 elif enabled alpha; then
5773
5774     check_cflags -mieee
5775
5776 elif enabled arm; then
5777
5778     enabled msvc && check_cpp_condition thumb stddef.h "defined _M_ARMT"
5779     test_cpp_condition stddef.h "defined __thumb__" && test_cc <<EOF && enable_weak thumb
5780 float func(float a, float b){ return a+b; }
5781 EOF
5782     enabled thumb && check_cflags -mthumb || check_cflags -marm
5783
5784     if check_cpp_condition vfp_args stddef.h "defined __ARM_PCS_VFP"; then
5785         :
5786     elif check_cpp_condition vfp_args stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5787         :
5788     elif ! test_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5789         case "${cross_prefix:-$cc}" in
5790             *hardfloat*) enable vfp_args; fpabi=vfp ;;
5791             *) check_ld "cc" vfp_args <<EOF && fpabi=vfp || fpabi=soft ;;
5792 __asm__ (".eabi_attribute 28, 1");
5793 int main(void) { return 0; }
5794 EOF
5795         esac
5796         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5797     fi
5798
5799     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5800     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5801     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5802     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5803     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5804     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5805     enabled setend  && check_insn setend  'setend be'
5806
5807     [ $target_os = linux ] || [ $target_os = android ] ||
5808         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5809             $ARCH_EXT_LIST_ARM
5810
5811     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5812
5813     check_as as_arch_directive ".arch armv7-a"
5814     check_as as_dn_directive   "ra .dn d0.i16"
5815     check_as as_fpu_directive  ".fpu neon"
5816
5817     # llvm's integrated assembler supports .object_arch from llvm 3.5
5818     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5819         check_as as_object_arch ".object_arch armv4"
5820
5821     # MS armasm fails to assemble our PIC constructs
5822     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5823
5824 elif enabled mips; then
5825
5826     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5827     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5828     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5829
5830     # Enable minimum ISA based on selected options
5831     if enabled mips64; then
5832         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5833         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5834         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5835     else
5836         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5837         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5838         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5839         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5840     fi
5841
5842     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5843     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5844     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_headers msa.h || disable msa
5845     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5846     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5847     enabled msa && enabled msa2 && check_inline_asm_flags msa2 '"nxbits.any.b $w0, $w0"' '-mmsa2' && check_headers msa2.h || disable msa2
5848
5849     if enabled bigendian && enabled msa; then
5850         disable msa
5851     fi
5852
5853 elif enabled parisc; then
5854
5855     if enabled gcc; then
5856         case $($cc -dumpversion) in
5857             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5858         esac
5859     fi
5860
5861 elif enabled ppc; then
5862
5863     enable local_aligned
5864
5865     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5866     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5867     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5868     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5869
5870     if enabled altivec; then
5871         check_cflags -maltivec -mabi=altivec
5872
5873         # check if our compiler supports Motorola AltiVec C API
5874         check_cc altivec altivec.h "vector signed int v1 = (vector signed int) { 0 };
5875                                     vector signed int v2 = (vector signed int) { 1 };
5876                                     v1 = vec_add(v1, v2);"
5877
5878         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5879     fi
5880
5881     if enabled vsx; then
5882         check_cflags -mvsx &&
5883         check_cc vsx altivec.h "int v[4] = { 0 };
5884                                 vector signed int v1 = vec_vsx_ld(0, v);"
5885     fi
5886
5887     if enabled power8; then
5888         check_cpp_condition power8 "altivec.h" "defined(_ARCH_PWR8)"
5889     fi
5890
5891 elif enabled x86; then
5892
5893     check_builtin rdtsc    intrin.h   "__rdtsc()"
5894     check_builtin mm_empty mmintrin.h "_mm_empty()"
5895
5896     enable local_aligned
5897
5898     # check whether EBP is available on x86
5899     # As 'i' is stored on the stack, this program will crash
5900     # if the base pointer is used to access it because the
5901     # base pointer is cleared in the inline assembly code.
5902     check_exec_crash <<EOF && enable ebp_available
5903 volatile int i=0;
5904 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5905 return i;
5906 EOF
5907
5908     # check whether EBX is available on x86
5909     check_inline_asm ebx_available '""::"b"(0)' &&
5910         check_inline_asm ebx_available '"":::"%ebx"'
5911
5912     # check whether xmm clobbers are supported
5913     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5914
5915     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5916         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5917
5918     # check whether binutils is new enough to compile SSSE3/MMXEXT
5919     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5920     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5921
5922     probe_x86asm(){
5923         x86asmexe_probe=$1
5924         if test_cmd $x86asmexe_probe -v; then
5925             x86asmexe=$x86asmexe_probe
5926             x86asm_type=nasm
5927             x86asm_debug="-g -F dwarf"
5928             X86ASMDEP=
5929             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5930         elif test_cmd $x86asmexe_probe --version; then
5931             x86asmexe=$x86asmexe_probe
5932             x86asm_type=yasm
5933             x86asm_debug="-g dwarf2"
5934             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
5935             X86ASM_DEPFLAGS=
5936         fi
5937         check_x86asm x86asm "movbe ecx, [5]"
5938     }
5939
5940     if ! disabled_any asm mmx x86asm; then
5941         disable x86asm
5942         for program in $x86asmexe nasm yasm; do
5943             probe_x86asm $program && break
5944         done
5945         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
5946         X86ASMFLAGS="-f $objformat"
5947         enabled pic               && append X86ASMFLAGS "-DPIC"
5948         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
5949         case "$objformat" in
5950             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
5951         esac
5952
5953         enabled avx512 && check_x86asm avx512_external "vmovdqa32 [eax]{k1}{z}, zmm0"
5954         enabled avx2   && check_x86asm avx2_external   "vextracti128 xmm0, ymm0, 0"
5955         enabled xop    && check_x86asm xop_external    "vpmacsdd xmm0, xmm1, xmm2, xmm3"
5956         enabled fma4   && check_x86asm fma4_external   "vfmaddps ymm0, ymm1, ymm2, ymm3"
5957         check_x86asm cpunop          "CPU amdnop"
5958     fi
5959
5960     case "$cpu" in
5961         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5962             disable fast_clz
5963         ;;
5964     esac
5965
5966 fi
5967
5968 check_cc intrinsics_neon arm_neon.h "int16x8_t test = vdupq_n_s16(0)"
5969
5970 check_ldflags -Wl,--as-needed
5971 check_ldflags -Wl,-z,noexecstack
5972
5973 if ! disabled network; then
5974     check_func getaddrinfo $network_extralibs
5975     check_func inet_aton $network_extralibs
5976
5977     check_type netdb.h "struct addrinfo"
5978     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5979     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5980     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5981     check_type poll.h "struct pollfd"
5982     check_type netinet/sctp.h "struct sctp_event_subscribe"
5983     check_struct "sys/socket.h" "struct msghdr" msg_flags
5984     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5985     check_type netinet/in.h "struct sockaddr_in6"
5986     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5987     check_type "sys/types.h sys/socket.h" socklen_t
5988
5989     # Prefer arpa/inet.h over winsock2
5990     if check_headers arpa/inet.h ; then
5991         check_func closesocket
5992     elif check_headers winsock2.h ; then
5993         check_func_headers winsock2.h closesocket -lws2 &&
5994             network_extralibs="-lws2" ||
5995         { check_func_headers winsock2.h closesocket -lws2_32 &&
5996             network_extralibs="-lws2_32"; } || disable winsock2_h network
5997         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5998
5999         check_type ws2tcpip.h socklen_t
6000         check_type ws2tcpip.h "struct addrinfo"
6001         check_type ws2tcpip.h "struct group_source_req"
6002         check_type ws2tcpip.h "struct ip_mreq_source"
6003         check_type ws2tcpip.h "struct ipv6_mreq"
6004         check_type winsock2.h "struct pollfd"
6005         check_struct winsock2.h "struct sockaddr" sa_len
6006         check_type ws2tcpip.h "struct sockaddr_in6"
6007         check_type ws2tcpip.h "struct sockaddr_storage"
6008     else
6009         disable network
6010     fi
6011 fi
6012
6013 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
6014 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
6015 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
6016 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
6017 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
6018 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
6019 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
6020
6021 case "$custom_allocator" in
6022     jemalloc)
6023         # jemalloc by default does not use a prefix
6024         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
6025     ;;
6026     tcmalloc)
6027         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
6028         malloc_prefix=tc_
6029     ;;
6030 esac
6031
6032 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
6033 check_func  ${malloc_prefix}memalign            && enable memalign
6034 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
6035
6036 check_func  access
6037 check_func_headers stdlib.h arc4random
6038 check_lib   clock_gettime time.h clock_gettime || check_lib clock_gettime time.h clock_gettime -lrt
6039 check_func  fcntl
6040 check_func  fork
6041 check_func  gethrtime
6042 check_func  getopt
6043 check_func  getrusage
6044 check_func  gettimeofday
6045 check_func  isatty
6046 check_func  mkstemp
6047 check_func  mmap
6048 check_func  mprotect
6049 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
6050 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
6051 check_func  sched_getaffinity
6052 check_func  setrlimit
6053 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
6054 check_func  strerror_r
6055 check_func  sysconf
6056 check_func  sysctl
6057 check_func  usleep
6058
6059 check_func_headers conio.h kbhit
6060 check_func_headers io.h setmode
6061 check_func_headers lzo/lzo1x.h lzo1x_999_compress
6062 check_func_headers mach/mach_time.h mach_absolute_time
6063 check_func_headers stdlib.h getenv
6064 check_func_headers sys/stat.h lstat
6065
6066 check_func_headers windows.h GetModuleHandle
6067 check_func_headers windows.h GetProcessAffinityMask
6068 check_func_headers windows.h GetProcessTimes
6069 check_func_headers windows.h GetStdHandle
6070 check_func_headers windows.h GetSystemTimeAsFileTime
6071 check_func_headers windows.h LoadLibrary
6072 check_func_headers windows.h MapViewOfFile
6073 check_func_headers windows.h PeekNamedPipe
6074 check_func_headers windows.h SetConsoleTextAttribute
6075 check_func_headers windows.h SetConsoleCtrlHandler
6076 check_func_headers windows.h SetDllDirectory
6077 check_func_headers windows.h Sleep
6078 check_func_headers windows.h VirtualAlloc
6079 check_func_headers glob.h glob
6080 enabled xlib &&
6081     check_lib xlib "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
6082
6083 check_headers direct.h
6084 check_headers dirent.h
6085 check_headers dxgidebug.h
6086 check_headers dxva.h
6087 check_headers dxva2api.h -D_WIN32_WINNT=0x0600
6088 check_headers io.h
6089 check_headers linux/perf_event.h
6090 check_headers libcrystalhd/libcrystalhd_if.h
6091 check_headers malloc.h
6092 check_headers net/udplite.h
6093 check_headers poll.h
6094 check_headers sys/param.h
6095 check_headers sys/resource.h
6096 check_headers sys/select.h
6097 check_headers sys/time.h
6098 check_headers sys/un.h
6099 check_headers termios.h
6100 check_headers unistd.h
6101 check_headers valgrind/valgrind.h
6102 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
6103 check_headers windows.h
6104 check_headers X11/extensions/XvMClib.h
6105 check_headers asm/types.h
6106
6107 # it seems there are versions of clang in some distros that try to use the
6108 # gcc headers, which explodes for stdatomic
6109 # so we also check that atomics actually work here
6110 check_builtin stdatomic stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0); foo += bar"
6111
6112 check_lib advapi32 "windows.h"            RegCloseKey          -ladvapi32
6113 check_lib bcrypt   "windows.h bcrypt.h"   BCryptGenRandom      -lbcrypt &&
6114     check_cpp_condition bcrypt bcrypt.h "defined BCRYPT_RNG_ALGORITHM"
6115 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
6116 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
6117 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
6118
6119 check_lib android android/native_window.h ANativeWindow_acquire -landroid
6120 check_lib mediandk "stdint.h media/NdkImage.h" AImage_delete -lmediandk
6121 check_lib camera2ndk "stdbool.h stdint.h camera/NdkCameraManager.h" ACameraManager_create -lcamera2ndk
6122
6123 enabled appkit       && check_apple_framework AppKit
6124 enabled audiotoolbox && check_apple_framework AudioToolbox
6125 enabled avfoundation && check_apple_framework AVFoundation
6126 enabled coreimage    && check_apple_framework CoreImage
6127 enabled videotoolbox && check_apple_framework VideoToolbox
6128
6129 check_apple_framework CoreFoundation
6130 check_apple_framework CoreMedia
6131 check_apple_framework CoreVideo
6132
6133 enabled avfoundation && {
6134     disable coregraphics applicationservices
6135     check_lib coregraphics        CoreGraphics/CoreGraphics.h               CGGetActiveDisplayList "-framework CoreGraphics" ||
6136     check_lib applicationservices ApplicationServices/ApplicationServices.h CGGetActiveDisplayList "-framework ApplicationServices"; }
6137
6138 enabled videotoolbox && {
6139     check_lib coreservices CoreServices/CoreServices.h UTGetOSTypeFromString "-framework CoreServices"
6140     check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_HEVC "-framework CoreMedia"
6141     check_func_headers CoreVideo/CVPixelBuffer.h kCVPixelFormatType_420YpCbCr10BiPlanarVideoRange "-framework CoreVideo"
6142     check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferTransferFunction_SMPTE_ST_2084_PQ "-framework CoreVideo"
6143     check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferTransferFunction_ITU_R_2100_HLG "-framework CoreVideo"
6144     check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferTransferFunction_Linear "-framework CoreVideo"
6145 }
6146
6147 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
6148
6149 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
6150 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
6151 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
6152 check_type "windows.h d3d11.h" "ID3D11VideoContext"
6153 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
6154
6155 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
6156 check_type "vdpau/vdpau.h" "VdpPictureInfoVP9"
6157
6158 if [ -z "$nvccflags" ]; then
6159     nvccflags=$nvccflags_default
6160 fi
6161
6162 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6163     nvccflags="$nvccflags -m64"
6164 else
6165     nvccflags="$nvccflags -m32"
6166 fi
6167
6168 if enabled cuda_nvcc; then
6169     nvccflags="$nvccflags -ptx"
6170 else
6171     nvccflags="$nvccflags -S -nocudalib -nocudainc --cuda-device-only -include ${source_link}/compat/cuda/cuda_runtime.h"
6172     check_nvcc cuda_llvm
6173 fi
6174
6175 if ! disabled ffnvcodec; then
6176     ffnv_hdr_list="ffnvcodec/nvEncodeAPI.h ffnvcodec/dynlink_cuda.h ffnvcodec/dynlink_cuviddec.h ffnvcodec/dynlink_nvcuvid.h"
6177     check_pkg_config ffnvcodec "ffnvcodec >= 9.1.23.1" "$ffnv_hdr_list" "" || \
6178       check_pkg_config ffnvcodec "ffnvcodec >= 9.0.18.3 ffnvcodec < 9.1" "$ffnv_hdr_list" "" || \
6179       check_pkg_config ffnvcodec "ffnvcodec >= 8.2.15.10 ffnvcodec < 8.3" "$ffnv_hdr_list" "" || \
6180       check_pkg_config ffnvcodec "ffnvcodec >= 8.1.24.11 ffnvcodec < 8.2" "$ffnv_hdr_list" ""
6181 fi
6182
6183 check_cpp_condition winrt windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)"
6184
6185 if ! disabled w32threads && ! enabled pthreads; then
6186     check_func_headers "windows.h process.h" _beginthreadex &&
6187         check_type "windows.h" CONDITION_VARIABLE &&
6188         check_type "windows.h" INIT_ONCE &&
6189         enable w32threads || disable w32threads
6190     if ! enabled w32threads && enabled winrt; then
6191         check_func_headers "windows.h" CreateThread &&
6192             enable w32threads || disable w32threads
6193     fi
6194 fi
6195
6196 # check for some common methods of building with pthread support
6197 # do this before the optional library checks as some of them require pthreads
6198 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
6199     if check_lib pthreads pthread.h pthread_join   -pthread &&
6200        check_lib pthreads pthread.h pthread_create -pthread; then
6201         add_cflags -pthread
6202     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
6203          check_lib pthreads pthread.h pthread_create -pthreads; then
6204         add_cflags -pthreads
6205     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
6206          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
6207         add_cflags -ldl -pthread
6208     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
6209          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
6210         :
6211     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
6212          check_lib pthreads pthread.h pthread_create -lpthread; then
6213         :
6214     elif check_func pthread_join && check_func pthread_create; then
6215         enable pthreads
6216     fi
6217     check_cc pthreads "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER"
6218
6219     if enabled pthreads; then
6220         check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
6221         check_func pthread_cancel $pthreads_extralibs
6222     fi
6223 fi
6224
6225 enabled  zlib && { check_pkg_config zlib zlib "zlib.h" zlibVersion ||
6226                    check_lib zlib   zlib.h      zlibVersion    -lz; }
6227 enabled bzlib && check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
6228 enabled  lzma && check_lib lzma   lzma.h lzma_version_number -llzma
6229
6230 # On some systems dynamic loading requires no extra linker flags
6231 check_lib libdl dlfcn.h "dlopen dlsym" || check_lib libdl dlfcn.h "dlopen dlsym" -ldl
6232
6233 check_lib libm math.h sin -lm
6234
6235 atan2f_args=2
6236 copysign_args=2
6237 hypot_args=2
6238 ldexpf_args=2
6239 powf_args=2
6240
6241 for func in $MATH_FUNCS; do
6242     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
6243 done
6244
6245 for func in $COMPLEX_FUNCS; do
6246     eval check_complexfunc $func \${${func}_args:-1}
6247 done
6248
6249 # these are off by default, so fail if requested and not available
6250 enabled avisynth          && require_headers "avisynth/avisynth_c.h"
6251 enabled cuda_nvcc         && { check_nvcc cuda_nvcc || die "ERROR: failed checking for nvcc."; }
6252 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
6253 enabled decklink          && { require_headers DeckLinkAPI.h &&
6254                                { test_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a090500" || die "ERROR: Decklink API version must be >= 10.9.5."; } }
6255 enabled frei0r            && require_headers "frei0r.h dlfcn.h"
6256 enabled gmp               && require gmp gmp.h mpz_export -lgmp
6257 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
6258 enabled jni               && { [ $target_os = "android" ] && check_headers jni.h && enabled pthreads || die "ERROR: jni not found"; }
6259 enabled ladspa            && require_headers "ladspa.h dlfcn.h"
6260 enabled libaom            && require_pkg_config libaom "aom >= 1.0.0" aom/aom_codec.h aom_codec_version
6261 enabled libaribb24        && { check_pkg_config libaribb24 "aribb24 > 1.0.3" "aribb24/aribb24.h" arib_instance_new ||
6262                                { enabled gpl && require_pkg_config libaribb24 aribb24 "aribb24/aribb24.h" arib_instance_new; } ||
6263                                die "ERROR: libaribb24 requires version higher than 1.0.3 or --enable-gpl."; }
6264 enabled lv2               && require_pkg_config lv2 lilv-0 "lilv/lilv.h" lilv_world_new
6265 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
6266 enabled libass            && require_pkg_config libass libass ass/ass.h ass_library_init
6267 enabled libbluray         && require_pkg_config libbluray libbluray libbluray/bluray.h bd_open
6268 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
6269 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
6270                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
6271                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
6272 enabled libcaca           && require_pkg_config libcaca caca caca.h caca_create_canvas
6273 enabled libcodec2         && require libcodec2 codec2/codec2.h codec2_create -lcodec2
6274 enabled libdav1d          && require_pkg_config libdav1d "dav1d >= 0.4.0" "dav1d/dav1d.h" dav1d_version
6275 enabled libdavs2          && require_pkg_config libdavs2 "davs2 >= 1.6.0" davs2.h davs2_decoder_open
6276 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
6277 enabled libdrm            && require_pkg_config libdrm libdrm xf86drm.h drmGetVersion
6278 enabled libfdk_aac        && { check_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
6279                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
6280                                  warn "using libfdk without pkg-config"; } }
6281 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"
6282 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
6283 enabled fontconfig        && enable libfontconfig
6284 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
6285 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
6286 enabled libfribidi        && require_pkg_config libfribidi fribidi fribidi.h fribidi_version_info
6287 enabled libglslang        && require_cpp libglslang glslang/SPIRV/GlslangToSpv.h "glslang::TIntermediate*" -lglslang -lOSDependent -lHLSL -lOGLCompiler -lSPVRemapper -lSPIRV -lSPIRV-Tools-opt -lSPIRV-Tools -lpthread -lstdc++
6288 enabled libgme            && { check_pkg_config libgme libgme gme/gme.h gme_new_emu ||
6289                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }
6290 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
6291                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
6292                                done || die "ERROR: libgsm not found"; }
6293 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc $pthreads_extralibs
6294 enabled libklvanc         && require libklvanc libklvanc/vanc.h klvanc_context_create -lklvanc
6295 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
6296 enabled liblensfun        && require_pkg_config liblensfun lensfun lensfun.h lf_db_new
6297 # While it may appear that require is being used as a pkg-config
6298 # fallback for libmfx, it is actually being used to detect a different
6299 # installation route altogether.  If libmfx is installed via the Intel
6300 # Media SDK or Intel Media Server Studio, these don't come with
6301 # pkg-config support.  Instead, users should make sure that the build
6302 # can find the libraries and headers through other means.
6303 enabled libmfx            && { check_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit ||
6304                                { require libmfx "mfx/mfxvideo.h" MFXInit "-llibmfx $advapi32_extralibs" && warn "using libmfx without pkg-config"; } }
6305 if enabled libmfx; then
6306    check_cc MFX_CODEC_VP9 "mfx/mfxvp9.h mfx/mfxstructures.h" "MFX_CODEC_VP9"
6307 fi
6308
6309 enabled libmodplug        && require_pkg_config libmodplug libmodplug libmodplug/modplug.h ModPlug_Load
6310 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame $libm_extralibs
6311 enabled libmysofa         && { check_pkg_config libmysofa libmysofa mysofa.h mysofa_neighborhood_init_withstepdefine ||
6312                                require libmysofa mysofa.h mysofa_neighborhood_init_withstepdefine -lmysofa $zlib_extralibs; }
6313 enabled libnpp            && { check_lib libnpp npp.h nppGetLibVersion -lnppig -lnppicc -lnppc -lnppidei ||
6314                                check_lib libnpp npp.h nppGetLibVersion -lnppi -lnppc -lnppidei ||
6315                                die "ERROR: libnpp not found"; }
6316 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
6317 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
6318 enabled libopencv         && { check_headers opencv2/core/core_c.h &&
6319                                { check_pkg_config libopencv opencv opencv2/core/core_c.h cvCreateImageHeader ||
6320                                  require libopencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
6321                                require_pkg_config libopencv opencv opencv/cxcore.h cvCreateImageHeader; }
6322 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
6323 enabled libopenjpeg       && { check_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version ||
6324                                { require_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } }
6325 enabled libopenmpt        && require_pkg_config libopenmpt "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create -lstdc++ && append libopenmpt_extralibs "-lstdc++"
6326 enabled libopus           && {
6327     enabled libopus_decoder && {
6328         require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
6329     }
6330     enabled libopus_encoder && {
6331         require_pkg_config libopus opus opus_multistream.h opus_multistream_surround_encoder_create
6332     }
6333 }
6334 enabled libpulse          && require_pkg_config libpulse libpulse pulse/pulseaudio.h pa_context_new
6335 enabled librabbitmq       && require_pkg_config librabbitmq "librabbitmq >= 0.7.1" amqp.h amqp_new_connection
6336 enabled librav1e          && require_pkg_config librav1e "rav1e >= 0.1.0" rav1e.h rav1e_context_new
6337 enabled librsvg           && require_pkg_config librsvg librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
6338 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
6339 enabled librubberband     && require_pkg_config librubberband "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new -lstdc++ && append librubberband_extralibs "-lstdc++"
6340 enabled libshine          && require_pkg_config libshine shine shine/layer3.h shine_encode_buffer
6341 enabled libsmbclient      && { check_pkg_config libsmbclient smbclient libsmbclient.h smbc_init ||
6342                                require libsmbclient libsmbclient.h smbc_init -lsmbclient; }
6343 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy -lstdc++
6344 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
6345 enabled libssh            && require_pkg_config libssh libssh libssh/sftp.h sftp_init
6346 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init
6347 enabled libsrt            && require_pkg_config libsrt "srt >= 1.3.0" srt/srt.h srt_socket
6348 enabled libtensorflow     && require libtensorflow tensorflow/c/c_api.h TF_Version -ltensorflow
6349 enabled libtesseract      && require_pkg_config libtesseract tesseract tesseract/capi.h TessBaseAPICreate
6350 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
6351 enabled libtls            && require_pkg_config libtls libtls tls.h tls_configure
6352 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
6353                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
6354                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
6355 enabled libv4l2           && require_pkg_config libv4l2 libv4l2 libv4l2.h v4l2_ioctl
6356 enabled libvidstab        && require_pkg_config libvidstab "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
6357 enabled libvmaf           && require_pkg_config libvmaf "libvmaf >= 1.3.9" libvmaf.h compute_vmaf
6358 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
6359 enabled libvorbis         && require_pkg_config libvorbis vorbis vorbis/codec.h vorbis_info_init &&
6360                              require_pkg_config libvorbisenc vorbisenc vorbis/vorbisenc.h vorbis_encode_init
6361
6362 enabled libvpx            && {
6363     enabled libvpx_vp8_decoder && {
6364         check_pkg_config libvpx_vp8_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
6365             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"
6366     }
6367     enabled libvpx_vp8_encoder && {
6368         check_pkg_config libvpx_vp8_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
6369             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"
6370     }
6371     enabled libvpx_vp9_decoder && {
6372         check_pkg_config libvpx_vp9_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
6373             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"
6374     }
6375     enabled libvpx_vp9_encoder && {
6376         check_pkg_config libvpx_vp9_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
6377             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"
6378     }
6379     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
6380         die "libvpx enabled but no supported decoders found"
6381     fi
6382 }
6383
6384 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
6385 enabled libwebp           && {
6386     enabled libwebp_encoder      && require_pkg_config libwebp "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
6387     enabled libwebp_anim_encoder && check_pkg_config libwebp_anim_encoder "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit; }
6388 enabled libx264           && { check_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode ||
6389                                { require libx264 "stdint.h x264.h" x264_encoder_encode "-lx264 $pthreads_extralibs $libm_extralibs" &&
6390                                  warn "using libx264 without pkg-config"; } } &&
6391                              require_cpp_condition libx264 x264.h "X264_BUILD >= 118" &&
6392                              check_cpp_condition libx262 x264.h "X264_MPEG2"
6393 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
6394                              require_cpp_condition libx265 x265.h "X265_BUILD >= 70"
6395 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode "-lxavs $pthreads_extralibs $libm_extralibs"
6396 enabled libxavs2          && require_pkg_config libxavs2 "xavs2 >= 1.3.0" "stdint.h xavs2.h" xavs2_api_get
6397 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
6398 enabled libzimg           && require_pkg_config libzimg "zimg >= 2.7.0" zimg.h zimg_get_api_version
6399 enabled libzmq            && require_pkg_config libzmq "libzmq >= 4.2.1" zmq.h zmq_ctx_new
6400 enabled libzvbi           && require_pkg_config libzvbi zvbi-0.2 libzvbi.h vbi_decoder_new &&
6401                              { test_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
6402                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
6403 enabled libxml2           && require_pkg_config libxml2 libxml-2.0 libxml2/libxml/xmlversion.h xmlCheckVersion
6404 enabled mbedtls           && { check_pkg_config mbedtls mbedtls mbedtls/x509_crt.h mbedtls_x509_crt_init ||
6405                                check_pkg_config mbedtls mbedtls mbedtls/ssl.h mbedtls_ssl_init ||
6406                                check_lib mbedtls mbedtls/ssl.h mbedtls_ssl_init -lmbedtls -lmbedx509 -lmbedcrypto ||
6407                                die "ERROR: mbedTLS not found"; }
6408 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
6409 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
6410                                { ! enabled cross_compile &&
6411                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
6412                                  add_ldflags -L/opt/vc/lib/ &&
6413                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
6414                                die "ERROR: mmal not found" &&
6415                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
6416 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
6417                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
6418                                die "ERROR: openal not found"; } &&
6419                              { test_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
6420                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
6421 enabled opencl            && { check_pkg_config opencl OpenCL CL/cl.h clEnqueueNDRangeKernel ||
6422                                check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
6423                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
6424                                die "ERROR: opencl not found"; } &&
6425                              { test_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
6426                                test_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
6427                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
6428 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
6429                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
6430                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
6431                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
6432                                die "ERROR: opengl not found."
6433                              }
6434 enabled omx_rpi           && { test_code cc OMX_Core.h OMX_IndexConfigBrcmVideoRequestIFrame ||
6435                                { ! enabled cross_compile &&
6436                                  add_cflags -isystem/opt/vc/include/IL &&
6437                                  test_code cc OMX_Core.h OMX_IndexConfigBrcmVideoRequestIFrame; } ||
6438                                die "ERROR: OpenMAX IL headers from raspberrypi/firmware not found"; } &&
6439                              enable omx
6440 enabled omx               && require_headers OMX_Core.h
6441 enabled openssl           && { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
6442                                check_pkg_config openssl openssl openssl/ssl.h SSL_library_init ||
6443                                check_lib openssl openssl/ssl.h OPENSSL_init_ssl -lssl -lcrypto ||
6444                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
6445                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
6446                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
6447                                die "ERROR: openssl not found"; }
6448 enabled pocketsphinx      && require_pkg_config pocketsphinx pocketsphinx pocketsphinx/pocketsphinx.h ps_init
6449 enabled rkmpp             && { require_pkg_config rkmpp rockchip_mpp  rockchip/rk_mpi.h mpp_create &&
6450                                require_pkg_config rockchip_mpp "rockchip_mpp >= 1.3.7" rockchip/rk_mpi.h mpp_create &&
6451                                { enabled libdrm ||
6452                                  die "ERROR: rkmpp requires --enable-libdrm"; }
6453                              }
6454 enabled vapoursynth       && require_pkg_config vapoursynth "vapoursynth-script >= 42" VSScript.h vsscript_init
6455
6456
6457 if enabled gcrypt; then
6458     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
6459     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
6460         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
6461         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
6462         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
6463             die "ERROR: gcrypt not found"
6464         add_cflags $gcrypt_cflags
6465     else
6466         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
6467     fi
6468 fi
6469
6470 if enabled sdl2; then
6471     SDL2_CONFIG="${cross_prefix}sdl2-config"
6472     test_pkg_config sdl2 "sdl2 >= 2.0.1 sdl2 < 2.1.0" SDL_events.h SDL_PollEvent
6473     if disabled sdl2 && "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6474         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6475         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6476         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6477         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6478         check_func_headers SDL_events.h SDL_PollEvent $sdl2_extralibs $sdl2_cflags &&
6479             enable sdl2
6480     fi
6481     if test $target_os = "mingw32"; then
6482         sdl2_extralibs=$(filter_out '-mwindows' $sdl2_extralibs)
6483     fi
6484 fi
6485
6486 if enabled decklink; then
6487     case $target_os in
6488         mingw32*|mingw64*|win32|win64)
6489             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6490             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6491             ;;
6492     esac
6493 fi
6494
6495 enabled securetransport &&
6496     check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6497     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" ||
6498         disable securetransport
6499
6500 enabled securetransport &&
6501     check_func SecItemImport "-Wl,-framework,CoreFoundation -Wl,-framework,Security"
6502
6503 enabled schannel &&
6504     check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6505     test_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" &&
6506     schannel_extralibs="-lsecur32" ||
6507         disable schannel
6508
6509 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6510 enabled makeinfo \
6511     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6512     && enable makeinfo_html || disable makeinfo_html
6513 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6514 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6515 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6516 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6517
6518 # check V4L2 codecs available in the API
6519 if enabled v4l2_m2m; then
6520     check_headers linux/fb.h
6521     check_headers linux/videodev2.h
6522     test_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6523     check_cc v4l2_m2m linux/videodev2.h "int i = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_VIDEO_M2M | V4L2_BUF_FLAG_LAST;"
6524     check_cc vc1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VC1_ANNEX_G;"
6525     check_cc mpeg1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG1;"
6526     check_cc mpeg2_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG2;"
6527     check_cc mpeg4_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG4;"
6528     check_cc hevc_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_HEVC;"
6529     check_cc h263_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H263;"
6530     check_cc h264_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H264;"
6531     check_cc vp8_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP8;"
6532     check_cc vp9_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP9;"
6533 fi
6534
6535 check_headers sys/videoio.h
6536 test_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6537
6538 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6539 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6540 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6541 # w32api 3.12 had it defined wrong
6542 check_cpp_condition vfwcap_defines vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER"
6543
6544 check_type "dshow.h" IBaseFilter
6545
6546 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6547 check_headers "dev/bktr/ioctl_meteor.h dev/bktr/ioctl_bt848.h"                   ||
6548     check_headers "machine/ioctl_meteor.h machine/ioctl_bt848.h"                 ||
6549     check_headers "dev/video/meteor/ioctl_meteor.h dev/video/bktr/ioctl_bt848.h" ||
6550     check_headers "dev/ic/bt8xx.h"
6551
6552 if check_struct sys/soundcard.h audio_buf_info bytes; then
6553     enable_sanitized sys/soundcard.h
6554 else
6555     test_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_sanitized sys/soundcard.h
6556     #include <sys/soundcard.h>
6557     audio_buf_info abc;
6558 EOF
6559 fi
6560
6561 enabled alsa && { check_pkg_config alsa alsa "alsa/asoundlib.h" snd_pcm_htimestamp ||
6562                   check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound; }
6563
6564 enabled libjack &&
6565     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
6566
6567 enabled sndio && check_lib sndio sndio.h sio_open -lsndio
6568
6569 if enabled libcdio; then
6570     check_pkg_config libcdio libcdio_paranoia "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open ||
6571     check_pkg_config libcdio libcdio_paranoia "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open ||
6572     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6573     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6574     die "ERROR: No usable libcdio/cdparanoia found"
6575 fi
6576
6577 enabled libxcb && check_pkg_config libxcb "xcb >= 1.4" xcb/xcb.h xcb_connect ||
6578     disable libxcb_shm libxcb_shape libxcb_xfixes
6579
6580 if enabled libxcb; then
6581     enabled libxcb_shm    && check_pkg_config libxcb_shm    xcb-shm    xcb/shm.h    xcb_shm_attach
6582     enabled libxcb_shape  && check_pkg_config libxcb_shape  xcb-shape  xcb/shape.h  xcb_shape_get_rectangles
6583     enabled libxcb_xfixes && check_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
6584 fi
6585
6586 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6587
6588 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6589 # the desktop api partition
6590 test_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
6591 #ifdef WINAPI_FAMILY
6592 #include <winapifamily.h>
6593 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
6594 #error desktop, not uwp
6595 #else
6596 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
6597 #endif
6598 #else
6599 #error no family set
6600 #endif
6601 EOF
6602
6603 enabled vaapi &&
6604     check_pkg_config vaapi "libva >= 0.35.0" "va/va.h" vaInitialize
6605
6606 if enabled vaapi; then
6607     check_pkg_config vaapi_drm "libva-drm" "va/va_drm.h" vaGetDisplayDRM
6608
6609     if enabled xlib; then
6610         check_pkg_config vaapi_x11 "libva-x11" "va/va_x11.h" vaGetDisplay
6611     fi
6612
6613     check_cpp_condition vaapi_1 "va/va.h" "VA_CHECK_VERSION(1, 0, 0)"
6614
6615     check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
6616     check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
6617     check_type   "va/va.h va/va_vpp.h" "VAProcFilterParameterBufferHDRToneMapping"
6618     check_struct "va/va.h va/va_vpp.h" "VAProcPipelineCaps" rotation_flags
6619     check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
6620     check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
6621     check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
6622     check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
6623 fi
6624
6625 if enabled_all opencl libdrm ; then
6626     check_type "CL/cl_intel.h" "clCreateImageFromFdINTEL_fn" &&
6627         enable opencl_drm_beignet
6628     check_func_headers "CL/cl_ext.h" clImportMemoryARM &&
6629         enable opencl_drm_arm
6630 fi
6631
6632 if enabled_all opencl vaapi ; then
6633     if enabled opencl_drm_beignet ; then
6634         enable opencl_vaapi_beignet
6635     else
6636         check_type "CL/cl.h CL/cl_va_api_media_sharing_intel.h" "clCreateFromVA_APIMediaSurfaceINTEL_fn" &&
6637             enable opencl_vaapi_intel_media
6638     fi
6639 fi
6640
6641 if enabled_all opencl dxva2 ; then
6642     check_type "CL/cl_dx9_media_sharing.h" cl_dx9_surface_info_khr &&
6643         enable opencl_dxva2
6644 fi
6645
6646 if enabled_all opencl d3d11va ; then
6647     check_type "CL/cl_d3d11.h" clGetDeviceIDsFromD3D11KHR_fn &&
6648         enable opencl_d3d11
6649 fi
6650
6651 enabled vdpau &&
6652     check_cpp_condition vdpau vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP"
6653
6654 enabled vdpau &&
6655     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6656
6657 enabled crystalhd && check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
6658
6659 enabled vulkan &&
6660     require_pkg_config vulkan "vulkan >= 1.1.97" "vulkan/vulkan.h" vkCreateInstance
6661
6662 if enabled x86; then
6663     case $target_os in
6664         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6665             ;;
6666         *)
6667             disable ffnvcodec cuvid nvdec nvenc
6668             ;;
6669     esac
6670 elif enabled ppc64 && ! enabled bigendian; then
6671     case $target_os in
6672         linux)
6673             ;;
6674         *)
6675             disable ffnvcodec cuvid nvdec nvenc
6676             ;;
6677     esac
6678 else
6679     disable ffnvcodec cuvid nvdec nvenc
6680 fi
6681
6682 enabled ffnvcodec && enable cuda
6683
6684 enabled nvenc &&
6685     test_cc -I$source_path <<EOF || disable nvenc
6686 #include <ffnvcodec/nvEncodeAPI.h>
6687 NV_ENCODE_API_FUNCTION_LIST flist;
6688 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6689 int main(void) { return 0; }
6690 EOF
6691
6692 enabled amf &&
6693     check_cpp_condition amf "AMF/core/Version.h" \
6694         "(AMF_VERSION_MAJOR << 48 | AMF_VERSION_MINOR << 32 | AMF_VERSION_RELEASE << 16 | AMF_VERSION_BUILD_NUM) >= 0x0001000400090000"
6695
6696 # Funny iconv installations are not unusual, so check it after all flags have been set
6697 if enabled libc_iconv; then
6698     check_func_headers iconv.h iconv
6699 elif enabled iconv; then
6700     check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6701 fi
6702
6703 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6704
6705 # add some useful compiler flags if supported
6706 check_cflags -Wdeclaration-after-statement
6707 check_cflags -Wall
6708 check_cflags -Wdisabled-optimization
6709 check_cflags -Wpointer-arith
6710 check_cflags -Wredundant-decls
6711 check_cflags -Wwrite-strings
6712 check_cflags -Wtype-limits
6713 check_cflags -Wundef
6714 check_cflags -Wmissing-prototypes
6715 check_cflags -Wno-pointer-to-int-cast
6716 check_cflags -Wstrict-prototypes
6717 check_cflags -Wempty-body
6718
6719 if enabled extra_warnings; then
6720     check_cflags -Wcast-qual
6721     check_cflags -Wextra
6722     check_cflags -Wpedantic
6723 fi
6724
6725 check_disable_warning(){
6726     warning_flag=-W${1#-Wno-}
6727     test_cflags $unknown_warning_flags $warning_flag && add_cflags $1
6728 }
6729
6730 test_cflags -Werror=unused-command-line-argument &&
6731     append unknown_warning_flags "-Werror=unused-command-line-argument"
6732 test_cflags -Werror=unknown-warning-option &&
6733     append unknown_warning_flags "-Werror=unknown-warning-option"
6734
6735 check_disable_warning -Wno-parentheses
6736 check_disable_warning -Wno-switch
6737 check_disable_warning -Wno-format-zero-length
6738 check_disable_warning -Wno-pointer-sign
6739 check_disable_warning -Wno-unused-const-variable
6740 check_disable_warning -Wno-bool-operation
6741 check_disable_warning -Wno-char-subscripts
6742
6743 check_disable_warning_headers(){
6744     warning_flag=-W${1#-Wno-}
6745     test_cflags $warning_flag && add_cflags_headers $1
6746 }
6747
6748 check_disable_warning_headers -Wno-deprecated-declarations
6749 check_disable_warning_headers -Wno-unused-variable
6750
6751 test_cc <<EOF && enable blocks_extension
6752 void (^block)(void);
6753 EOF
6754
6755 # add some linker flags
6756 check_ldflags -Wl,--warn-common
6757 check_ldflags -Wl,-rpath-link=:libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6758 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir && add_ldsoflags -Wl,-rpath,$libdir
6759 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6760
6761 # add some strip flags
6762 check_stripflags -x
6763
6764 enabled neon_clobber_test &&
6765     check_ldflags -Wl,--wrap,avcodec_open2              \
6766                   -Wl,--wrap,avcodec_decode_audio4      \
6767                   -Wl,--wrap,avcodec_decode_video2      \
6768                   -Wl,--wrap,avcodec_decode_subtitle2   \
6769                   -Wl,--wrap,avcodec_encode_audio2      \
6770                   -Wl,--wrap,avcodec_encode_video2      \
6771                   -Wl,--wrap,avcodec_encode_subtitle    \
6772                   -Wl,--wrap,avcodec_send_packet        \
6773                   -Wl,--wrap,avcodec_receive_packet     \
6774                   -Wl,--wrap,avcodec_send_frame         \
6775                   -Wl,--wrap,avcodec_receive_frame      \
6776                   -Wl,--wrap,swr_convert                \
6777                   -Wl,--wrap,avresample_convert ||
6778     disable neon_clobber_test
6779
6780 enabled xmm_clobber_test &&
6781     check_ldflags -Wl,--wrap,avcodec_open2              \
6782                   -Wl,--wrap,avcodec_decode_audio4      \
6783                   -Wl,--wrap,avcodec_decode_video2      \
6784                   -Wl,--wrap,avcodec_decode_subtitle2   \
6785                   -Wl,--wrap,avcodec_encode_audio2      \
6786                   -Wl,--wrap,avcodec_encode_video2      \
6787                   -Wl,--wrap,avcodec_encode_subtitle    \
6788                   -Wl,--wrap,avcodec_send_packet        \
6789                   -Wl,--wrap,avcodec_receive_packet     \
6790                   -Wl,--wrap,avcodec_send_frame         \
6791                   -Wl,--wrap,avcodec_receive_frame      \
6792                   -Wl,--wrap,swr_convert                \
6793                   -Wl,--wrap,avresample_convert         \
6794                   -Wl,--wrap,sws_scale ||
6795     disable xmm_clobber_test
6796
6797 check_ld "cc" proper_dce <<EOF
6798 extern const int array[512];
6799 static inline int func(void) { return array[0]; }
6800 int main(void) { return 0; }
6801 EOF
6802
6803 if enabled proper_dce; then
6804     echo "X { local: *; };" > $TMPV
6805     if test_ldflags -Wl,${version_script},$TMPV; then
6806         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6807         quotes='""'
6808         test_cc <<EOF && enable symver_asm_label
6809 void ff_foo(void) __asm__ ("av_foo@VERSION");
6810 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6811 EOF
6812         test_cc <<EOF && enable symver_gnu_asm
6813 __asm__(".symver ff_foo,av_foo@VERSION");
6814 void ff_foo(void) {}
6815 EOF
6816     fi
6817 fi
6818
6819 if [ -z "$optflags" ]; then
6820     if enabled small; then
6821         optflags=$cflags_size
6822     elif enabled optimizations; then
6823         optflags=$cflags_speed
6824     else
6825         optflags=$cflags_noopt
6826     fi
6827 fi
6828
6829 check_optflags(){
6830     check_cflags "$@"
6831     enabled lto && check_ldflags "$@"
6832 }
6833
6834 check_optflags $optflags
6835 check_optflags -fno-math-errno
6836 check_optflags -fno-signed-zeros
6837
6838 if enabled lto; then
6839     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6840     check_cflags  -flto
6841     check_ldflags -flto $cpuflags
6842     disable inline_asm_direct_symbol_refs
6843 fi
6844
6845 enabled ftrapv && check_cflags -ftrapv
6846
6847 test_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6848 int x;
6849 EOF
6850
6851
6852 if enabled icc; then
6853     # Just warnings, no remarks
6854     check_cflags -w1
6855     # -wd: Disable following warnings
6856     # 144, 167, 556: -Wno-pointer-sign
6857     # 188: enumerated type mixed with another type
6858     # 1292: attribute "foo" ignored
6859     # 1419: external declaration in primary source file
6860     # 10006: ignoring unknown option -fno-signed-zeros
6861     # 10148: ignoring unknown option -Wno-parentheses
6862     # 10156: ignoring option '-W'; no argument required
6863     # 13200: No EMMS instruction before call to function
6864     # 13203: No EMMS instruction before return from function
6865     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6866     # 11030: Warning unknown option --as-needed
6867     # 10156: ignoring option '-export'; no argument required
6868     check_ldflags -wd10156,11030
6869     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6870     enable ebp_available
6871     # The test above does not test linking
6872     enabled lto && disable symver_asm_label
6873     if enabled x86_32; then
6874         icc_version=$($cc -dumpversion)
6875         test ${icc_version%%.*} -ge 11 &&
6876             check_cflags -falign-stack=maintain-16-byte ||
6877             disable aligned_stack
6878     fi
6879 elif enabled gcc; then
6880     check_optflags -fno-tree-vectorize
6881     check_cflags -Werror=format-security
6882     check_cflags -Werror=implicit-function-declaration
6883     check_cflags -Werror=missing-prototypes
6884     check_cflags -Werror=return-type
6885     check_cflags -Werror=vla
6886     check_cflags -Wformat
6887     check_cflags -fdiagnostics-color=auto
6888     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6889     if enabled x86_32; then
6890         case $target_os in
6891         *bsd*)
6892             # BSDs don't guarantee a 16 byte aligned stack, but we can
6893             # request GCC to try to maintain 16 byte alignment throughout
6894             # function calls. Library entry points that might call assembly
6895             # functions align the stack. (The parameter means 2^4 bytes.)
6896             check_cflags -mpreferred-stack-boundary=4
6897             ;;
6898         esac
6899     fi
6900 elif enabled llvm_gcc; then
6901     check_cflags -mllvm -stack-alignment=16
6902 elif enabled clang; then
6903     if enabled x86_32; then
6904         # Clang doesn't support maintaining alignment without assuming the
6905         # same alignment in every function. If 16 byte alignment would be
6906         # enabled, one would also have to either add attribute_align_arg on
6907         # every single entry point into the libraries or enable -mstackrealign
6908         # (doing stack realignment in every single function).
6909         case $target_os in
6910         mingw32|win32|*bsd*)
6911             disable aligned_stack
6912             ;;
6913         *)
6914             check_cflags -mllvm -stack-alignment=16
6915             check_cflags -mstack-alignment=16
6916             ;;
6917         esac
6918     else
6919         check_cflags -mllvm -stack-alignment=16
6920         check_cflags -mstack-alignment=16
6921     fi
6922     check_cflags -Qunused-arguments
6923     check_cflags -Werror=implicit-function-declaration
6924     check_cflags -Werror=missing-prototypes
6925     check_cflags -Werror=return-type
6926 elif enabled cparser; then
6927     add_cflags -Wno-missing-variable-declarations
6928     add_cflags -Wno-empty-statement
6929 elif enabled armcc; then
6930     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6931     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6932     # 2523: use of inline assembly is deprecated
6933     add_cflags -W${armcc_opt},--diag_suppress=2523
6934     add_cflags -W${armcc_opt},--diag_suppress=1207
6935     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6936     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6937     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6938     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6939 elif enabled pathscale; then
6940     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6941     disable inline_asm
6942 elif enabled_any msvc icl; then
6943     enabled x86_32 && disable aligned_stack
6944     enabled_all x86_32 debug && add_cflags -Oy-
6945     enabled debug && add_ldflags -debug
6946     enable pragma_deprecated
6947     if enabled icl; then
6948         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6949         # (correctly) on icl 13.x.
6950         test_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6951             add_cflags -Qansi-alias
6952         # Some inline asm is not compilable in debug
6953         if enabled debug; then
6954             disable ebp_available
6955             disable ebx_available
6956         fi
6957     fi
6958     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6959     check_cpp_condition log2 crtversion.h "_VC_CRT_MAJOR_VERSION >= 12"
6960     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6961     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6962     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6963     # MSVC 2013 and newer can handle it fine.
6964     # If this declspec fails, force including stdlib.h before the restrict redefinition
6965     # happens in config.h.
6966     if [ $restrict_keyword != restrict ]; then
6967         test_cc <<EOF || add_cflags -FIstdlib.h
6968 __declspec($restrict_keyword) void *foo(int);
6969 EOF
6970     fi
6971     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6972     # Issue has been fixed in MSVC v19.00.24218.
6973     test_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6974         check_cflags -d2SSAOptimizer-
6975     # enable utf-8 source processing on VS2015 U2 and newer
6976     test_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6977         add_cflags -utf-8
6978 fi
6979
6980 for pfx in "" host_; do
6981     varname=${pfx%_}cc_type
6982     eval "type=\$$varname"
6983     if [ "$type" = "msvc" ]; then
6984         test_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6985 static inline int foo(int a) { return a; }
6986 EOF
6987     fi
6988 done
6989
6990 case $as_type in
6991     clang)
6992         add_asflags -Qunused-arguments
6993     ;;
6994 esac
6995
6996 case $ld_type in
6997     clang)
6998         check_ldflags -Qunused-arguments
6999     ;;
7000 esac
7001
7002 enable frame_thread_encoder
7003
7004 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
7005
7006 check_deps $CONFIG_LIST       \
7007            $CONFIG_EXTRA      \
7008            $HAVE_LIST         \
7009            $ALL_COMPONENTS    \
7010
7011 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"
7012 enabled avresample && warn "Building with deprecated library libavresample"
7013
7014 case $target_os in
7015 haiku)
7016     disable memalign
7017     disable posix_memalign
7018     ;;
7019 *-dos|freedos|opendos)
7020     if test_cpp_condition sys/version.h "defined(__DJGPP__) && __DJGPP__ == 2 && __DJGPP_MINOR__ == 5"; then
7021         disable memalign
7022     fi
7023     ;;
7024 esac
7025
7026 flatten_extralibs(){
7027     nested_entries=
7028     list_name=$1
7029     eval list=\$${1}
7030     for entry in $list; do
7031         entry_copy=$entry
7032         resolve entry_copy
7033         flat_entries=
7034         for e in $entry_copy; do
7035             case $e in
7036                 *_extralibs) nested_entries="$nested_entries$e ";;
7037                           *) flat_entries="$flat_entries$e ";;
7038             esac
7039         done
7040         eval $entry="\$flat_entries"
7041     done
7042     append $list_name "$nested_entries"
7043
7044     resolve nested_entries
7045     if test -n "$(filter '*_extralibs' $nested_entries)"; then
7046         flatten_extralibs $list_name
7047     fi
7048 }
7049
7050 flatten_extralibs_wrapper(){
7051     list_name=$1
7052     flatten_extralibs $list_name
7053     unique $list_name
7054     resolve $list_name
7055     eval $list_name=\$\(\$ldflags_filter \$$list_name\)
7056     eval printf \''%s'\' \""\$$list_name"\"
7057 }
7058
7059 for linkunit in $LIBRARY_LIST; do
7060     unset current_extralibs
7061     eval components=\$$(toupper ${linkunit})_COMPONENTS_LIST
7062     for comp in ${components}; do
7063         enabled $comp || continue
7064         comp_extralibs="${comp}_extralibs"
7065         append current_extralibs $comp_extralibs
7066     done
7067     eval prepend ${linkunit}_extralibs $current_extralibs
7068 done
7069
7070 for linkunit in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
7071     eval ${linkunit}_extralibs=\$\(flatten_extralibs_wrapper ${linkunit}_extralibs\)
7072 done
7073
7074 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
7075
7076 for thread in $THREADS_LIST; do
7077     if enabled $thread; then
7078         test -n "$thread_type" &&
7079             die "ERROR: Only one thread type must be selected." ||
7080             thread_type="$thread"
7081     fi
7082 done
7083
7084 if disabled stdatomic; then
7085     if enabled atomics_gcc; then
7086         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
7087     elif enabled atomics_win32; then
7088         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
7089     elif enabled atomics_suncc; then
7090         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
7091     elif enabled pthreads; then
7092         add_compat atomics/pthread/stdatomic.o
7093         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
7094     else
7095         enabled threads && die "Threading is enabled, but no atomics are available"
7096         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
7097     fi
7098 fi
7099
7100 # Check if requested libraries were found.
7101 for lib in $AUTODETECT_LIBS; do
7102     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
7103 done
7104
7105 enabled zlib && add_cppflags -DZLIB_CONST
7106
7107 # conditional library dependencies, in any order
7108 enabled afftdn_filter       && prepend avfilter_deps "avcodec"
7109 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
7110 enabled afir_filter         && prepend avfilter_deps "avcodec"
7111 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
7112 enabled aresample_filter    && prepend avfilter_deps "swresample"
7113 enabled atempo_filter       && prepend avfilter_deps "avcodec"
7114 enabled bm3d_filter         && prepend avfilter_deps "avcodec"
7115 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
7116 enabled convolve_filter     && prepend avfilter_deps "avcodec"
7117 enabled deconvolve_filter   && prepend avfilter_deps "avcodec"
7118 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
7119 enabled elbg_filter         && prepend avfilter_deps "avcodec"
7120 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
7121 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
7122 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
7123 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
7124 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
7125 enabled pan_filter          && prepend avfilter_deps "swresample"
7126 enabled pp_filter           && prepend avfilter_deps "postproc"
7127 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
7128 enabled resample_filter && prepend avfilter_deps "avresample"
7129 enabled sab_filter          && prepend avfilter_deps "swscale"
7130 enabled scale_filter    && prepend avfilter_deps "swscale"
7131 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
7132 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
7133 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
7134 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
7135 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
7136 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
7137 enabled smartblur_filter    && prepend avfilter_deps "swscale"
7138 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
7139 enabled spp_filter          && prepend avfilter_deps "avcodec"
7140 enabled sr_filter           && prepend avfilter_deps "avformat swscale"
7141 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
7142 enabled uspp_filter         && prepend avfilter_deps "avcodec"
7143 enabled zoompan_filter      && prepend avfilter_deps "swscale"
7144
7145 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
7146
7147 #FIXME
7148 enabled_any sdl2_outdev opengl_outdev && enabled sdl2 &&
7149     add_cflags $(filter_out '-Dmain=SDL_main' $sdl2_cflags)
7150
7151 enabled opus_decoder    && prepend avcodec_deps "swresample"
7152
7153 # reorder the items at var $1 to align with the items order at var $2 .
7154 # die if an item at $1 is not at $2 .
7155 reorder_by(){
7156     eval rb_in=\$$1
7157     eval rb_ordered=\$$2
7158
7159     for rb in $rb_in; do
7160         is_in $rb $rb_ordered || die "$rb at \$$1 is not at \$$2"
7161     done
7162
7163     rb_out=
7164     for rb in $rb_ordered; do
7165         is_in $rb $rb_in && rb_out="$rb_out$rb "
7166     done
7167     eval $1=\$rb_out
7168 }
7169
7170 # deps-expand fflib $1:  N x {append all expanded deps; unique}
7171 # within a set of N items, N expansions are enough to expose a cycle.
7172 expand_deps(){
7173     unique ${1}_deps  # required for the early break test.
7174     for dummy in $LIBRARY_LIST; do  # N iteratios
7175         eval deps=\$${1}_deps
7176         append ${1}_deps $(map 'eval echo \$${v}_deps' $deps)
7177         unique ${1}_deps
7178         eval '[ ${#deps} = ${#'${1}_deps'} ]' && break  # doesn't expand anymore
7179     done
7180
7181     eval is_in $1 \$${1}_deps && die "Dependency cycle at ${1}_deps"
7182     reorder_by ${1}_deps LIBRARY_LIST  # linking order is expected later
7183 }
7184
7185 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
7186 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
7187
7188 map 'expand_deps $v' $LIBRARY_LIST
7189
7190 if test "$quiet" != "yes"; then
7191
7192 echo "install prefix            $prefix"
7193 echo "source path               $source_path"
7194 echo "C compiler                $cc"
7195 echo "C library                 $libc_type"
7196 if test "$host_cc" != "$cc"; then
7197     echo "host C compiler           $host_cc"
7198     echo "host C library            $host_libc_type"
7199 fi
7200 echo "ARCH                      $arch ($cpu)"
7201 if test "$build_suffix" != ""; then
7202     echo "build suffix              $build_suffix"
7203 fi
7204 if test "$progs_suffix" != ""; then
7205     echo "progs suffix              $progs_suffix"
7206 fi
7207 if test "$extra_version" != ""; then
7208     echo "version string suffix     $extra_version"
7209 fi
7210 echo "big-endian                ${bigendian-no}"
7211 echo "runtime cpu detection     ${runtime_cpudetect-no}"
7212 if enabled x86; then
7213     echo "standalone assembly       ${x86asm-no}"
7214     echo "x86 assembler             ${x86asmexe}"
7215     echo "MMX enabled               ${mmx-no}"
7216     echo "MMXEXT enabled            ${mmxext-no}"
7217     echo "3DNow! enabled            ${amd3dnow-no}"
7218     echo "3DNow! extended enabled   ${amd3dnowext-no}"
7219     echo "SSE enabled               ${sse-no}"
7220     echo "SSSE3 enabled             ${ssse3-no}"
7221     echo "AESNI enabled             ${aesni-no}"
7222     echo "AVX enabled               ${avx-no}"
7223     echo "AVX2 enabled              ${avx2-no}"
7224     echo "AVX-512 enabled           ${avx512-no}"
7225     echo "XOP enabled               ${xop-no}"
7226     echo "FMA3 enabled              ${fma3-no}"
7227     echo "FMA4 enabled              ${fma4-no}"
7228     echo "i686 features enabled     ${i686-no}"
7229     echo "CMOV is fast              ${fast_cmov-no}"
7230     echo "EBX available             ${ebx_available-no}"
7231     echo "EBP available             ${ebp_available-no}"
7232 fi
7233 if enabled aarch64; then
7234     echo "NEON enabled              ${neon-no}"
7235     echo "VFP enabled               ${vfp-no}"
7236 fi
7237 if enabled arm; then
7238     echo "ARMv5TE enabled           ${armv5te-no}"
7239     echo "ARMv6 enabled             ${armv6-no}"
7240     echo "ARMv6T2 enabled           ${armv6t2-no}"
7241     echo "VFP enabled               ${vfp-no}"
7242     echo "NEON enabled              ${neon-no}"
7243     echo "THUMB enabled             ${thumb-no}"
7244 fi
7245 if enabled mips; then
7246     echo "MIPS FPU enabled          ${mipsfpu-no}"
7247     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
7248     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
7249     echo "MIPS MSA enabled          ${msa-no}"
7250     echo "MIPS MSA2 enabled         ${msa2-no}"
7251     echo "LOONGSON MMI enabled      ${mmi-no}"
7252 fi
7253 if enabled ppc; then
7254     echo "AltiVec enabled           ${altivec-no}"
7255     echo "VSX enabled               ${vsx-no}"
7256     echo "POWER8 enabled            ${power8-no}"
7257     echo "PPC 4xx optimizations     ${ppc4xx-no}"
7258     echo "dcbzl available           ${dcbzl-no}"
7259 fi
7260 echo "debug symbols             ${debug-no}"
7261 echo "strip symbols             ${stripping-no}"
7262 echo "optimize for size         ${small-no}"
7263 echo "optimizations             ${optimizations-no}"
7264 echo "static                    ${static-no}"
7265 echo "shared                    ${shared-no}"
7266 echo "postprocessing support    ${postproc-no}"
7267 echo "network support           ${network-no}"
7268 echo "threading support         ${thread_type-no}"
7269 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
7270 echo "texi2html enabled         ${texi2html-no}"
7271 echo "perl enabled              ${perl-no}"
7272 echo "pod2man enabled           ${pod2man-no}"
7273 echo "makeinfo enabled          ${makeinfo-no}"
7274 echo "makeinfo supports HTML    ${makeinfo_html-no}"
7275 test -n "$random_seed" &&
7276     echo "random seed               ${random_seed}"
7277 echo
7278
7279 echo "External libraries:"
7280 print_enabled '' $EXTERNAL_LIBRARY_LIST $EXTERNAL_AUTODETECT_LIBRARY_LIST | print_in_columns
7281 echo
7282
7283 echo "External libraries providing hardware acceleration:"
7284 print_enabled '' $HWACCEL_LIBRARY_LIST $HWACCEL_AUTODETECT_LIBRARY_LIST | print_in_columns
7285 echo
7286
7287 echo "Libraries:"
7288 print_enabled '' $LIBRARY_LIST | print_in_columns
7289 echo
7290
7291 echo "Programs:"
7292 print_enabled '' $PROGRAM_LIST | print_in_columns
7293 echo
7294
7295 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
7296     echo "Enabled ${type}s:"
7297     eval list=\$$(toupper $type)_LIST
7298     print_enabled '_*' $list | print_in_columns
7299     echo
7300 done
7301
7302 if test -n "$ignore_tests"; then
7303     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
7304     echo "Ignored FATE tests:"
7305     echo $ignore_tests | print_in_columns
7306     echo
7307 fi
7308
7309 echo "License: $license"
7310
7311 fi # test "$quiet" != "yes"
7312
7313 if test -n "$WARN_IF_GETS_DISABLED_LIST"; then
7314     for cfg in $WARN_IF_GETS_DISABLED_LIST; do
7315         if disabled $cfg; then
7316             varname=${cfg}_disable_reason
7317             eval "warn \"Disabled $cfg because \$$varname\""
7318         fi
7319     done
7320 fi
7321
7322 if test -n "$WARNINGS"; then
7323     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
7324     enabled fatal_warnings && exit 1
7325 fi
7326
7327 test -e Makefile || echo "include $source_path/Makefile" > Makefile
7328
7329 esc(){
7330     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
7331 }
7332
7333 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
7334
7335 enabled stripping || strip="echo skipping strip"
7336 enabled stripping || striptype=""
7337
7338 config_files="$TMPH ffbuild/config.mak doc/config.texi"
7339
7340 cat > ffbuild/config.mak <<EOF
7341 # Automatically generated by configure - do not modify!
7342 ifndef FFMPEG_CONFIG_MAK
7343 FFMPEG_CONFIG_MAK=1
7344 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
7345 prefix=$prefix
7346 LIBDIR=\$(DESTDIR)$libdir
7347 SHLIBDIR=\$(DESTDIR)$shlibdir
7348 INCDIR=\$(DESTDIR)$incdir
7349 BINDIR=\$(DESTDIR)$bindir
7350 DATADIR=\$(DESTDIR)$datadir
7351 DOCDIR=\$(DESTDIR)$docdir
7352 MANDIR=\$(DESTDIR)$mandir
7353 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
7354 INSTALL_NAME_DIR=$install_name_dir
7355 SRC_PATH=$source_path
7356 SRC_LINK=$source_link
7357 ifndef MAIN_MAKEFILE
7358 SRC_PATH:=\$(SRC_PATH:.%=..%)
7359 endif
7360 CC_IDENT=$cc_ident
7361 ARCH=$arch
7362 INTRINSICS=$intrinsics
7363 EXTERN_PREFIX=$extern_prefix
7364 CC=$cc
7365 CXX=$cxx
7366 AS=$as
7367 OBJCC=$objcc
7368 LD=$ld
7369 DEPCC=$dep_cc
7370 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
7371 DEPAS=$as
7372 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
7373 X86ASM=$x86asmexe
7374 DEPX86ASM=$x86asmexe
7375 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
7376 AR=$ar
7377 ARFLAGS=$arflags
7378 AR_O=$ar_o
7379 AR_CMD=$ar
7380 NM_CMD=$nm
7381 RANLIB=$ranlib
7382 STRIP=$strip
7383 STRIPTYPE=$striptype
7384 NVCC=$nvcc
7385 CP=cp -p
7386 LN_S=$ln_s
7387 CPPFLAGS=$CPPFLAGS
7388 CFLAGS=$CFLAGS
7389 CXXFLAGS=$CXXFLAGS
7390 OBJCFLAGS=$OBJCFLAGS
7391 ASFLAGS=$ASFLAGS
7392 NVCCFLAGS=$nvccflags
7393 AS_C=$AS_C
7394 AS_O=$AS_O
7395 OBJCC_C=$OBJCC_C
7396 OBJCC_E=$OBJCC_E
7397 OBJCC_O=$OBJCC_O
7398 CC_C=$CC_C
7399 CC_E=$CC_E
7400 CC_O=$CC_O
7401 CXX_C=$CXX_C
7402 CXX_O=$CXX_O
7403 NVCC_C=$NVCC_C
7404 NVCC_O=$NVCC_O
7405 LD_O=$LD_O
7406 X86ASM_O=$X86ASM_O
7407 LD_LIB=$LD_LIB
7408 LD_PATH=$LD_PATH
7409 DLLTOOL=$dlltool
7410 WINDRES=$windres
7411 DEPWINDRES=$dep_cc
7412 DOXYGEN=$doxygen
7413 LDFLAGS=$LDFLAGS
7414 LDEXEFLAGS=$LDEXEFLAGS
7415 LDSOFLAGS=$LDSOFLAGS
7416 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
7417 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
7418 X86ASMFLAGS=$X86ASMFLAGS
7419 BUILDSUF=$build_suffix
7420 PROGSSUF=$progs_suffix
7421 FULLNAME=$FULLNAME
7422 LIBPREF=$LIBPREF
7423 LIBSUF=$LIBSUF
7424 LIBNAME=$LIBNAME
7425 SLIBPREF=$SLIBPREF
7426 SLIBSUF=$SLIBSUF
7427 EXESUF=$EXESUF
7428 EXTRA_VERSION=$extra_version
7429 CCDEP=$CCDEP
7430 CXXDEP=$CXXDEP
7431 CCDEP_FLAGS=$CCDEP_FLAGS
7432 ASDEP=$ASDEP
7433 ASDEP_FLAGS=$ASDEP_FLAGS
7434 X86ASMDEP=$X86ASMDEP
7435 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
7436 CC_DEPFLAGS=$CC_DEPFLAGS
7437 AS_DEPFLAGS=$AS_DEPFLAGS
7438 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
7439 HOSTCC=$host_cc
7440 HOSTLD=$host_ld
7441 HOSTCFLAGS=$host_cflags
7442 HOSTCPPFLAGS=$host_cppflags
7443 HOSTEXESUF=$HOSTEXESUF
7444 HOSTLDFLAGS=$host_ldflags
7445 HOSTEXTRALIBS=$host_extralibs
7446 DEPHOSTCC=$host_cc
7447 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
7448 HOSTCCDEP=$HOSTCCDEP
7449 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
7450 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
7451 HOSTCC_C=$HOSTCC_C
7452 HOSTCC_O=$HOSTCC_O
7453 HOSTLD_O=$HOSTLD_O
7454 TARGET_EXEC=$target_exec $target_exec_args
7455 TARGET_PATH=$target_path
7456 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
7457 CFLAGS-ffplay=${sdl2_cflags}
7458 CFLAGS_HEADERS=$CFLAGS_HEADERS
7459 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
7460 EXTRALIBS=$extralibs
7461 COMPAT_OBJS=$compat_objs
7462 INSTALL=$install
7463 LIBTARGET=${LIBTARGET}
7464 SLIBNAME=${SLIBNAME}
7465 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
7466 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
7467 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
7468 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
7469 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
7470 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
7471 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
7472 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
7473 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
7474 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
7475 NOREDZONE_FLAGS=$noredzone_flags
7476 LIBFUZZER_PATH=$libfuzzer_path
7477 IGNORE_TESTS=$ignore_tests
7478 EOF
7479
7480 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
7481
7482 for entry in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
7483     eval echo "EXTRALIBS-${entry}=\$${entry}_extralibs" >> ffbuild/config.mak
7484 done
7485
7486 cat > $TMPH <<EOF
7487 /* Automatically generated by configure - do not modify! */
7488 #ifndef FFMPEG_CONFIG_H
7489 #define FFMPEG_CONFIG_H
7490 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
7491 #define FFMPEG_LICENSE "$(c_escape $license)"
7492 #define CONFIG_THIS_YEAR 2020
7493 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
7494 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
7495 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
7496 #define av_restrict $restrict_keyword
7497 #define EXTERN_PREFIX "${extern_prefix}"
7498 #define EXTERN_ASM ${extern_prefix}
7499 #define BUILDSUF "$build_suffix"
7500 #define SLIBSUF "$SLIBSUF"
7501 #define HAVE_MMX2 HAVE_MMXEXT
7502 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
7503 EOF
7504
7505 test -n "$assert_level" &&
7506     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
7507
7508 test -n "$malloc_prefix" &&
7509     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
7510
7511 if enabled x86asm; then
7512     append config_files $TMPASM
7513     cat > $TMPASM <<EOF
7514 ; Automatically generated by configure - do not modify!
7515 EOF
7516 fi
7517
7518 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
7519
7520
7521 mkdir -p doc
7522 mkdir -p tests
7523 mkdir -p tests/api
7524 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
7525
7526 print_config ARCH_   "$config_files" $ARCH_LIST
7527 print_config HAVE_   "$config_files" $HAVE_LIST
7528 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
7529                                      $CONFIG_EXTRA      \
7530                                      $ALL_COMPONENTS    \
7531
7532 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
7533 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
7534
7535 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
7536 cp_if_changed $TMPH config.h
7537 touch ffbuild/.config
7538
7539 enabled x86asm && cp_if_changed $TMPASM config.asm
7540
7541 cat > $TMPH <<EOF
7542 /* Generated by ffmpeg configure */
7543 #ifndef AVUTIL_AVCONFIG_H
7544 #define AVUTIL_AVCONFIG_H
7545 EOF
7546
7547 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
7548
7549 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
7550
7551 cp_if_changed $TMPH libavutil/avconfig.h
7552
7553 # full_filter_name_foo=vf_foo
7554 # full_filter_name_bar=asrc_bar
7555 # ...
7556 eval "$(sed -n "s/^extern AVFilter ff_\([avfsinkrc]\{2,5\}\)_\(.*\);/full_filter_name_\2=\1_\2/p" $source_path/libavfilter/allfilters.c)"
7557
7558 # generate the lists of enabled components
7559 print_enabled_components(){
7560     file=$1
7561     struct_name=$2
7562     name=$3
7563     shift 3
7564     echo "static const $struct_name * const $name[] = {" > $TMPH
7565     for c in $*; do
7566         if enabled $c; then
7567             case $name in
7568                 filter_list)
7569                     eval c=\$full_filter_name_${c%_filter}
7570                 ;;
7571                 indev_list)
7572                     c=${c%_indev}_demuxer
7573                 ;;
7574                 outdev_list)
7575                     c=${c%_outdev}_muxer
7576                 ;;
7577             esac
7578             printf "    &ff_%s,\n" $c >> $TMPH
7579         fi
7580     done
7581     if [ "$name" = "filter_list" ]; then
7582         for c in asrc_abuffer vsrc_buffer asink_abuffer vsink_buffer; do
7583             printf "    &ff_%s,\n" $c >> $TMPH
7584         done
7585     fi
7586     echo "    NULL };" >> $TMPH
7587     cp_if_changed $TMPH $file
7588 }
7589
7590 print_enabled_components libavfilter/filter_list.c AVFilter filter_list $FILTER_LIST
7591 print_enabled_components libavcodec/codec_list.c AVCodec codec_list $CODEC_LIST
7592 print_enabled_components libavcodec/parser_list.c AVCodecParser parser_list $PARSER_LIST
7593 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
7594 print_enabled_components libavformat/demuxer_list.c AVInputFormat demuxer_list $DEMUXER_LIST
7595 print_enabled_components libavformat/muxer_list.c AVOutputFormat muxer_list $MUXER_LIST
7596 print_enabled_components libavdevice/indev_list.c AVInputFormat indev_list $INDEV_LIST
7597 print_enabled_components libavdevice/outdev_list.c AVOutputFormat outdev_list $OUTDEV_LIST
7598 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
7599
7600 # Settings for pkg-config files
7601
7602 cat > $TMPH <<EOF
7603 # Automatically generated by configure - do not modify!
7604 shared=$shared
7605 build_suffix=$build_suffix
7606 prefix=$prefix
7607 libdir=$libdir
7608 incdir=$incdir
7609 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
7610 source_path=${source_path}
7611 LIBPREF=${LIBPREF}
7612 LIBSUF=${LIBSUF}
7613 extralibs_avutil="$avutil_extralibs"
7614 extralibs_avcodec="$avcodec_extralibs"
7615 extralibs_avformat="$avformat_extralibs"
7616 extralibs_avdevice="$avdevice_extralibs"
7617 extralibs_avfilter="$avfilter_extralibs"
7618 extralibs_avresample="$avresample_extralibs"
7619 extralibs_postproc="$postproc_extralibs"
7620 extralibs_swscale="$swscale_extralibs"
7621 extralibs_swresample="$swresample_extralibs"
7622 EOF
7623
7624 for lib in $LIBRARY_LIST; do
7625     lib_deps="$(eval echo \$${lib}_deps)"
7626     echo ${lib}_deps=\"$lib_deps\" >> $TMPH
7627 done
7628
7629 cp_if_changed $TMPH ffbuild/config.sh