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 mvha_decoder_deps="zlib"
2794 mvha_decoder_select="llviddsp"
2795 mwsc_decoder_deps="zlib"
2796 mxpeg_decoder_select="mjpeg_decoder"
2797 nellymoser_decoder_select="mdct sinewin"
2798 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2799 nuv_decoder_select="idctdsp lzo"
2800 on2avc_decoder_select="mdct"
2801 opus_decoder_deps="swresample"
2802 opus_decoder_select="mdct15"
2803 opus_encoder_select="audio_frame_queue mdct15"
2804 png_decoder_deps="zlib"
2805 png_encoder_deps="zlib"
2806 png_encoder_select="llvidencdsp"
2807 prores_decoder_select="blockdsp idctdsp"
2808 prores_encoder_select="fdctdsp"
2809 qcelp_decoder_select="lsp"
2810 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2811 ra_144_decoder_select="audiodsp"
2812 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2813 ralf_decoder_select="golomb"
2814 rasc_decoder_deps="zlib"
2815 rawvideo_decoder_select="bswapdsp"
2816 rscc_decoder_deps="zlib"
2817 rtjpeg_decoder_select="me_cmp"
2818 rv10_decoder_select="h263_decoder"
2819 rv10_encoder_select="h263_encoder"
2820 rv20_decoder_select="h263_decoder"
2821 rv20_encoder_select="h263_encoder"
2822 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2823 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2824 screenpresso_decoder_deps="zlib"
2825 shorten_decoder_select="bswapdsp"
2826 sipr_decoder_select="lsp"
2827 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2828 snow_encoder_select="dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2829 sonic_decoder_select="golomb rangecoder"
2830 sonic_encoder_select="golomb rangecoder"
2831 sonic_ls_encoder_select="golomb rangecoder"
2832 sp5x_decoder_select="mjpeg_decoder"
2833 speedhq_decoder_select="mpegvideo"
2834 srgc_decoder_deps="zlib"
2835 svq1_decoder_select="hpeldsp"
2836 svq1_encoder_select="hpeldsp me_cmp mpegvideoenc"
2837 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2838 svq3_decoder_suggest="zlib"
2839 tak_decoder_select="audiodsp"
2840 tdsc_decoder_deps="zlib"
2841 tdsc_decoder_select="mjpeg_decoder"
2842 theora_decoder_select="vp3_decoder"
2843 thp_decoder_select="mjpeg_decoder"
2844 tiff_decoder_select="mjpeg_decoder"
2845 tiff_decoder_suggest="zlib lzma"
2846 tiff_encoder_suggest="zlib"
2847 truehd_decoder_select="mlp_parser"
2848 truehd_encoder_select="lpc audio_frame_queue"
2849 truemotion2_decoder_select="bswapdsp"
2850 truespeech_decoder_select="bswapdsp"
2851 tscc_decoder_deps="zlib"
2852 twinvq_decoder_select="mdct lsp sinewin"
2853 txd_decoder_select="texturedsp"
2854 utvideo_decoder_select="bswapdsp llviddsp"
2855 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2856 vble_decoder_select="llviddsp"
2857 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2858 vc1image_decoder_select="vc1_decoder"
2859 vorbis_decoder_select="mdct"
2860 vorbis_encoder_select="audio_frame_queue mdct"
2861 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2862 vp4_decoder_select="vp3_decoder"
2863 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2864 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2865 vp6a_decoder_select="vp6_decoder"
2866 vp6f_decoder_select="vp6_decoder"
2867 vp7_decoder_select="h264pred videodsp vp8dsp"
2868 vp8_decoder_select="h264pred videodsp vp8dsp"
2869 vp9_decoder_select="videodsp vp9_parser vp9_superframe_split_bsf"
2870 wcmv_decoder_deps="zlib"
2871 webp_decoder_select="vp8_decoder exif"
2872 wmalossless_decoder_select="llauddsp"
2873 wmapro_decoder_select="mdct sinewin wma_freqs"
2874 wmav1_decoder_select="mdct sinewin wma_freqs"
2875 wmav1_encoder_select="mdct sinewin wma_freqs"
2876 wmav2_decoder_select="mdct sinewin wma_freqs"
2877 wmav2_encoder_select="mdct sinewin wma_freqs"
2878 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2879 wmv1_decoder_select="h263_decoder"
2880 wmv1_encoder_select="h263_encoder"
2881 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2882 wmv2_encoder_select="h263_encoder wmv2dsp"
2883 wmv3_decoder_select="vc1_decoder"
2884 wmv3image_decoder_select="wmv3_decoder"
2885 xma1_decoder_select="wmapro_decoder"
2886 xma2_decoder_select="wmapro_decoder"
2887 ylc_decoder_select="bswapdsp"
2888 zerocodec_decoder_deps="zlib"
2889 zlib_decoder_deps="zlib"
2890 zlib_encoder_deps="zlib"
2891 zmbv_decoder_deps="zlib"
2892 zmbv_encoder_deps="zlib"
2893
2894 # hardware accelerators
2895 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2896 cuda_deps="ffnvcodec"
2897 cuvid_deps="ffnvcodec"
2898 d3d11va_deps="dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2899 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2900 ffnvcodec_deps_any="libdl LoadLibrary"
2901 nvdec_deps="ffnvcodec"
2902 vaapi_x11_deps="xlib"
2903 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2904 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2905 xvmc_deps="X11_extensions_XvMClib_h"
2906
2907 h263_vaapi_hwaccel_deps="vaapi"
2908 h263_vaapi_hwaccel_select="h263_decoder"
2909 h263_videotoolbox_hwaccel_deps="videotoolbox"
2910 h263_videotoolbox_hwaccel_select="h263_decoder"
2911 h264_d3d11va_hwaccel_deps="d3d11va"
2912 h264_d3d11va_hwaccel_select="h264_decoder"
2913 h264_d3d11va2_hwaccel_deps="d3d11va"
2914 h264_d3d11va2_hwaccel_select="h264_decoder"
2915 h264_dxva2_hwaccel_deps="dxva2"
2916 h264_dxva2_hwaccel_select="h264_decoder"
2917 h264_nvdec_hwaccel_deps="nvdec"
2918 h264_nvdec_hwaccel_select="h264_decoder"
2919 h264_vaapi_hwaccel_deps="vaapi"
2920 h264_vaapi_hwaccel_select="h264_decoder"
2921 h264_vdpau_hwaccel_deps="vdpau"
2922 h264_vdpau_hwaccel_select="h264_decoder"
2923 h264_videotoolbox_hwaccel_deps="videotoolbox"
2924 h264_videotoolbox_hwaccel_select="h264_decoder"
2925 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2926 hevc_d3d11va_hwaccel_select="hevc_decoder"
2927 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2928 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2929 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2930 hevc_dxva2_hwaccel_select="hevc_decoder"
2931 hevc_nvdec_hwaccel_deps="nvdec"
2932 hevc_nvdec_hwaccel_select="hevc_decoder"
2933 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2934 hevc_vaapi_hwaccel_select="hevc_decoder"
2935 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2936 hevc_vdpau_hwaccel_select="hevc_decoder"
2937 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2938 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2939 mjpeg_nvdec_hwaccel_deps="nvdec"
2940 mjpeg_nvdec_hwaccel_select="mjpeg_decoder"
2941 mjpeg_vaapi_hwaccel_deps="vaapi"
2942 mjpeg_vaapi_hwaccel_select="mjpeg_decoder"
2943 mpeg_xvmc_hwaccel_deps="xvmc"
2944 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2945 mpeg1_nvdec_hwaccel_deps="nvdec"
2946 mpeg1_nvdec_hwaccel_select="mpeg1video_decoder"
2947 mpeg1_vdpau_hwaccel_deps="vdpau"
2948 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2949 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2950 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2951 mpeg1_xvmc_hwaccel_deps="xvmc"
2952 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2953 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2954 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2955 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2956 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2957 mpeg2_dxva2_hwaccel_deps="dxva2"
2958 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2959 mpeg2_nvdec_hwaccel_deps="nvdec"
2960 mpeg2_nvdec_hwaccel_select="mpeg2video_decoder"
2961 mpeg2_vaapi_hwaccel_deps="vaapi"
2962 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2963 mpeg2_vdpau_hwaccel_deps="vdpau"
2964 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2965 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2966 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2967 mpeg2_xvmc_hwaccel_deps="xvmc"
2968 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2969 mpeg4_nvdec_hwaccel_deps="nvdec"
2970 mpeg4_nvdec_hwaccel_select="mpeg4_decoder"
2971 mpeg4_vaapi_hwaccel_deps="vaapi"
2972 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2973 mpeg4_vdpau_hwaccel_deps="vdpau"
2974 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2975 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2976 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2977 vc1_d3d11va_hwaccel_deps="d3d11va"
2978 vc1_d3d11va_hwaccel_select="vc1_decoder"
2979 vc1_d3d11va2_hwaccel_deps="d3d11va"
2980 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2981 vc1_dxva2_hwaccel_deps="dxva2"
2982 vc1_dxva2_hwaccel_select="vc1_decoder"
2983 vc1_nvdec_hwaccel_deps="nvdec"
2984 vc1_nvdec_hwaccel_select="vc1_decoder"
2985 vc1_vaapi_hwaccel_deps="vaapi"
2986 vc1_vaapi_hwaccel_select="vc1_decoder"
2987 vc1_vdpau_hwaccel_deps="vdpau"
2988 vc1_vdpau_hwaccel_select="vc1_decoder"
2989 vp8_nvdec_hwaccel_deps="nvdec"
2990 vp8_nvdec_hwaccel_select="vp8_decoder"
2991 vp8_vaapi_hwaccel_deps="vaapi"
2992 vp8_vaapi_hwaccel_select="vp8_decoder"
2993 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2994 vp9_d3d11va_hwaccel_select="vp9_decoder"
2995 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2996 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2997 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2998 vp9_dxva2_hwaccel_select="vp9_decoder"
2999 vp9_nvdec_hwaccel_deps="nvdec"
3000 vp9_nvdec_hwaccel_select="vp9_decoder"
3001 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
3002 vp9_vaapi_hwaccel_select="vp9_decoder"
3003 vp9_vdpau_hwaccel_deps="vdpau VdpPictureInfoVP9"
3004 vp9_vdpau_hwaccel_select="vp9_decoder"
3005 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
3006 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
3007 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
3008 wmv3_nvdec_hwaccel_select="vc1_nvdec_hwaccel"
3009 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
3010 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
3011
3012 # hardware-accelerated codecs
3013 omx_deps="libdl pthreads"
3014 omx_rpi_select="omx"
3015 qsv_deps="libmfx"
3016 qsvdec_select="qsv"
3017 qsvenc_select="qsv"
3018 qsvvpp_select="qsv"
3019 vaapi_encode_deps="vaapi"
3020 v4l2_m2m_deps="linux_videodev2_h sem_timedwait"
3021
3022 hwupload_cuda_filter_deps="ffnvcodec"
3023 scale_npp_filter_deps="ffnvcodec libnpp"
3024 scale_cuda_filter_deps="ffnvcodec"
3025 scale_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3026 thumbnail_cuda_filter_deps="ffnvcodec"
3027 thumbnail_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3028 transpose_npp_filter_deps="ffnvcodec libnpp"
3029 overlay_cuda_filter_deps="ffnvcodec"
3030 overlay_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3031
3032 amf_deps_any="libdl LoadLibrary"
3033 nvenc_deps="ffnvcodec"
3034 nvenc_deps_any="libdl LoadLibrary"
3035 nvenc_encoder_deps="nvenc"
3036
3037 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
3038 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
3039 h264_amf_encoder_deps="amf"
3040 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
3041 h264_cuvid_decoder_deps="cuvid"
3042 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
3043 h264_mediacodec_decoder_deps="mediacodec"
3044 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
3045 h264_mmal_decoder_deps="mmal"
3046 h264_nvenc_encoder_deps="nvenc"
3047 h264_omx_encoder_deps="omx"
3048 h264_qsv_decoder_select="h264_mp4toannexb_bsf qsvdec"
3049 h264_qsv_encoder_select="qsvenc"
3050 h264_rkmpp_decoder_deps="rkmpp"
3051 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
3052 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
3053 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
3054 h264_v4l2m2m_decoder_select="h264_mp4toannexb_bsf"
3055 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
3056 hevc_amf_encoder_deps="amf"
3057 hevc_cuvid_decoder_deps="cuvid"
3058 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
3059 hevc_mediacodec_decoder_deps="mediacodec"
3060 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
3061 hevc_nvenc_encoder_deps="nvenc"
3062 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf qsvdec"
3063 hevc_qsv_encoder_select="hevcparse qsvenc"
3064 hevc_rkmpp_decoder_deps="rkmpp"
3065 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
3066 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
3067 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
3068 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
3069 hevc_v4l2m2m_decoder_select="hevc_mp4toannexb_bsf"
3070 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
3071 mjpeg_cuvid_decoder_deps="cuvid"
3072 mjpeg_qsv_decoder_select="qsvdec"
3073 mjpeg_qsv_encoder_deps="libmfx"
3074 mjpeg_qsv_encoder_select="qsvenc"
3075 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
3076 mjpeg_vaapi_encoder_select="cbs_jpeg jpegtables vaapi_encode"
3077 mpeg1_cuvid_decoder_deps="cuvid"
3078 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
3079 mpeg2_crystalhd_decoder_select="crystalhd"
3080 mpeg2_cuvid_decoder_deps="cuvid"
3081 mpeg2_mmal_decoder_deps="mmal"
3082 mpeg2_mediacodec_decoder_deps="mediacodec"
3083 mpeg2_qsv_decoder_select="qsvdec"
3084 mpeg2_qsv_encoder_select="qsvenc"
3085 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
3086 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
3087 mpeg4_crystalhd_decoder_select="crystalhd"
3088 mpeg4_cuvid_decoder_deps="cuvid"
3089 mpeg4_mediacodec_decoder_deps="mediacodec"
3090 mpeg4_mmal_decoder_deps="mmal"
3091 mpeg4_omx_encoder_deps="omx"
3092 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
3093 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
3094 msmpeg4_crystalhd_decoder_select="crystalhd"
3095 nvenc_h264_encoder_select="h264_nvenc_encoder"
3096 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
3097 vc1_crystalhd_decoder_select="crystalhd"
3098 vc1_cuvid_decoder_deps="cuvid"
3099 vc1_mmal_decoder_deps="mmal"
3100 vc1_qsv_decoder_select="qsvdec"
3101 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
3102 vp8_cuvid_decoder_deps="cuvid"
3103 vp8_mediacodec_decoder_deps="mediacodec"
3104 vp8_qsv_decoder_select="qsvdec"
3105 vp8_rkmpp_decoder_deps="rkmpp"
3106 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
3107 vp8_vaapi_encoder_select="vaapi_encode"
3108 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
3109 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
3110 vp9_cuvid_decoder_deps="cuvid"
3111 vp9_mediacodec_decoder_deps="mediacodec"
3112 vp9_qsv_decoder_select="qsvdec"
3113 vp9_rkmpp_decoder_deps="rkmpp"
3114 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
3115 vp9_vaapi_encoder_select="vaapi_encode"
3116 vp9_qsv_encoder_deps="libmfx MFX_CODEC_VP9"
3117 vp9_qsv_encoder_select="qsvenc"
3118 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
3119 wmv3_crystalhd_decoder_select="crystalhd"
3120
3121 # parsers
3122 aac_parser_select="adts_header"
3123 av1_parser_select="cbs_av1"
3124 h264_parser_select="golomb h264dsp h264parse"
3125 hevc_parser_select="hevcparse"
3126 mpegaudio_parser_select="mpegaudioheader"
3127 mpegvideo_parser_select="mpegvideo"
3128 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
3129 vc1_parser_select="vc1dsp"
3130
3131 # bitstream_filters
3132 aac_adtstoasc_bsf_select="adts_header"
3133 av1_frame_merge_bsf_select="cbs_av1"
3134 av1_frame_split_bsf_select="cbs_av1"
3135 av1_metadata_bsf_select="cbs_av1"
3136 eac3_core_bsf_select="ac3_parser"
3137 filter_units_bsf_select="cbs"
3138 h264_metadata_bsf_deps="const_nan"
3139 h264_metadata_bsf_select="cbs_h264"
3140 h264_redundant_pps_bsf_select="cbs_h264"
3141 hevc_metadata_bsf_select="cbs_h265"
3142 mjpeg2jpeg_bsf_select="jpegtables"
3143 mpeg2_metadata_bsf_select="cbs_mpeg2"
3144 trace_headers_bsf_select="cbs"
3145 vp9_metadata_bsf_select="cbs_vp9"
3146
3147 # external libraries
3148 aac_at_decoder_deps="audiotoolbox"
3149 aac_at_decoder_select="aac_adtstoasc_bsf"
3150 ac3_at_decoder_deps="audiotoolbox"
3151 ac3_at_decoder_select="ac3_parser"
3152 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
3153 alac_at_decoder_deps="audiotoolbox"
3154 amr_nb_at_decoder_deps="audiotoolbox"
3155 avisynth_deps_any="libdl LoadLibrary"
3156 avisynth_demuxer_deps="avisynth"
3157 avisynth_demuxer_select="riffdec"
3158 eac3_at_decoder_deps="audiotoolbox"
3159 eac3_at_decoder_select="ac3_parser"
3160 gsm_ms_at_decoder_deps="audiotoolbox"
3161 ilbc_at_decoder_deps="audiotoolbox"
3162 mp1_at_decoder_deps="audiotoolbox"
3163 mp2_at_decoder_deps="audiotoolbox"
3164 mp3_at_decoder_deps="audiotoolbox"
3165 mp1_at_decoder_select="mpegaudioheader"
3166 mp2_at_decoder_select="mpegaudioheader"
3167 mp3_at_decoder_select="mpegaudioheader"
3168 pcm_alaw_at_decoder_deps="audiotoolbox"
3169 pcm_mulaw_at_decoder_deps="audiotoolbox"
3170 qdmc_decoder_select="fft"
3171 qdmc_at_decoder_deps="audiotoolbox"
3172 qdm2_at_decoder_deps="audiotoolbox"
3173 aac_at_encoder_deps="audiotoolbox"
3174 aac_at_encoder_select="audio_frame_queue"
3175 alac_at_encoder_deps="audiotoolbox"
3176 alac_at_encoder_select="audio_frame_queue"
3177 ilbc_at_encoder_deps="audiotoolbox"
3178 ilbc_at_encoder_select="audio_frame_queue"
3179 pcm_alaw_at_encoder_deps="audiotoolbox"
3180 pcm_alaw_at_encoder_select="audio_frame_queue"
3181 pcm_mulaw_at_encoder_deps="audiotoolbox"
3182 pcm_mulaw_at_encoder_select="audio_frame_queue"
3183 chromaprint_muxer_deps="chromaprint"
3184 h264_videotoolbox_encoder_deps="pthreads"
3185 h264_videotoolbox_encoder_select="videotoolbox_encoder"
3186 hevc_videotoolbox_encoder_deps="pthreads"
3187 hevc_videotoolbox_encoder_select="videotoolbox_encoder"
3188 libaom_av1_decoder_deps="libaom"
3189 libaom_av1_encoder_deps="libaom"
3190 libaom_av1_encoder_select="extract_extradata_bsf"
3191 libaribb24_decoder_deps="libaribb24"
3192 libcelt_decoder_deps="libcelt"
3193 libcodec2_decoder_deps="libcodec2"
3194 libcodec2_encoder_deps="libcodec2"
3195 libdav1d_decoder_deps="libdav1d"
3196 libdavs2_decoder_deps="libdavs2"
3197 libfdk_aac_decoder_deps="libfdk_aac"
3198 libfdk_aac_encoder_deps="libfdk_aac"
3199 libfdk_aac_encoder_select="audio_frame_queue"
3200 libgme_demuxer_deps="libgme"
3201 libgsm_decoder_deps="libgsm"
3202 libgsm_encoder_deps="libgsm"
3203 libgsm_ms_decoder_deps="libgsm"
3204 libgsm_ms_encoder_deps="libgsm"
3205 libilbc_decoder_deps="libilbc"
3206 libilbc_encoder_deps="libilbc"
3207 libkvazaar_encoder_deps="libkvazaar"
3208 libmodplug_demuxer_deps="libmodplug"
3209 libmp3lame_encoder_deps="libmp3lame"
3210 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
3211 libopencore_amrnb_decoder_deps="libopencore_amrnb"
3212 libopencore_amrnb_encoder_deps="libopencore_amrnb"
3213 libopencore_amrnb_encoder_select="audio_frame_queue"
3214 libopencore_amrwb_decoder_deps="libopencore_amrwb"
3215 libopenh264_decoder_deps="libopenh264"
3216 libopenh264_decoder_select="h264_mp4toannexb_bsf"
3217 libopenh264_encoder_deps="libopenh264"
3218 libopenjpeg_decoder_deps="libopenjpeg"
3219 libopenjpeg_encoder_deps="libopenjpeg"
3220 libopenmpt_demuxer_deps="libopenmpt"
3221 libopus_decoder_deps="libopus"
3222 libopus_encoder_deps="libopus"
3223 libopus_encoder_select="audio_frame_queue"
3224 librav1e_encoder_deps="librav1e"
3225 librav1e_encoder_select="extract_extradata_bsf"
3226 librsvg_decoder_deps="librsvg"
3227 libshine_encoder_deps="libshine"
3228 libshine_encoder_select="audio_frame_queue"
3229 libspeex_decoder_deps="libspeex"
3230 libspeex_encoder_deps="libspeex"
3231 libspeex_encoder_select="audio_frame_queue"
3232 libtheora_encoder_deps="libtheora"
3233 libtwolame_encoder_deps="libtwolame"
3234 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
3235 libvorbis_decoder_deps="libvorbis"
3236 libvorbis_encoder_deps="libvorbis libvorbisenc"
3237 libvorbis_encoder_select="audio_frame_queue"
3238 libvpx_vp8_decoder_deps="libvpx"
3239 libvpx_vp8_encoder_deps="libvpx"
3240 libvpx_vp9_decoder_deps="libvpx"
3241 libvpx_vp9_encoder_deps="libvpx"
3242 libwavpack_encoder_deps="libwavpack"
3243 libwavpack_encoder_select="audio_frame_queue"
3244 libwebp_encoder_deps="libwebp"
3245 libwebp_anim_encoder_deps="libwebp"
3246 libx262_encoder_deps="libx262"
3247 libx264_encoder_deps="libx264"
3248 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
3249 libx264rgb_encoder_select="libx264_encoder"
3250 libx265_encoder_deps="libx265"
3251 libxavs_encoder_deps="libxavs"
3252 libxavs2_encoder_deps="libxavs2"
3253 libxvid_encoder_deps="libxvid"
3254 libzvbi_teletext_decoder_deps="libzvbi"
3255 vapoursynth_demuxer_deps="vapoursynth"
3256 videotoolbox_suggest="coreservices"
3257 videotoolbox_deps="corefoundation coremedia corevideo"
3258 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
3259
3260 # demuxers / muxers
3261 ac3_demuxer_select="ac3_parser"
3262 act_demuxer_select="riffdec"
3263 aiff_muxer_select="iso_media"
3264 asf_demuxer_select="riffdec"
3265 asf_o_demuxer_select="riffdec"
3266 asf_muxer_select="riffenc"
3267 asf_stream_muxer_select="asf_muxer"
3268 av1_demuxer_select="av1_frame_merge_bsf av1_parser"
3269 avi_demuxer_select="iso_media riffdec exif"
3270 avi_muxer_select="riffenc"
3271 caf_demuxer_select="iso_media riffdec"
3272 caf_muxer_select="iso_media"
3273 dash_muxer_select="mp4_muxer"
3274 dash_demuxer_deps="libxml2"
3275 dirac_demuxer_select="dirac_parser"
3276 dts_demuxer_select="dca_parser"
3277 dtshd_demuxer_select="dca_parser"
3278 dv_demuxer_select="dvprofile"
3279 dv_muxer_select="dvprofile"
3280 dxa_demuxer_select="riffdec"
3281 eac3_demuxer_select="ac3_parser"
3282 f4v_muxer_select="mov_muxer"
3283 fifo_muxer_deps="threads"
3284 flac_demuxer_select="flac_parser"
3285 hds_muxer_select="flv_muxer"
3286 hls_muxer_select="mpegts_muxer"
3287 hls_muxer_suggest="gcrypt openssl"
3288 image2_alias_pix_demuxer_select="image2_demuxer"
3289 image2_brender_pix_demuxer_select="image2_demuxer"
3290 ipod_muxer_select="mov_muxer"
3291 ismv_muxer_select="mov_muxer"
3292 ivf_muxer_select="av1_metadata_bsf vp9_superframe_bsf"
3293 matroska_audio_muxer_select="matroska_muxer"
3294 matroska_demuxer_select="iso_media riffdec"
3295 matroska_demuxer_suggest="bzlib lzo zlib"
3296 matroska_muxer_select="iso_media riffenc"
3297 mmf_muxer_select="riffenc"
3298 mov_demuxer_select="iso_media riffdec"
3299 mov_demuxer_suggest="zlib"
3300 mov_muxer_select="iso_media riffenc rtpenc_chain"
3301 mp3_demuxer_select="mpegaudio_parser"
3302 mp3_muxer_select="mpegaudioheader"
3303 mp4_muxer_select="mov_muxer"
3304 mpegts_demuxer_select="iso_media"
3305 mpegts_muxer_select="adts_muxer latm_muxer"
3306 mpegtsraw_demuxer_select="mpegts_demuxer"
3307 mxf_muxer_select="golomb"
3308 mxf_d10_muxer_select="mxf_muxer"
3309 mxf_opatom_muxer_select="mxf_muxer"
3310 nut_muxer_select="riffenc"
3311 nuv_demuxer_select="riffdec"
3312 oga_muxer_select="ogg_muxer"
3313 ogg_demuxer_select="dirac_parse"
3314 ogv_muxer_select="ogg_muxer"
3315 opus_muxer_select="ogg_muxer"
3316 psp_muxer_select="mov_muxer"
3317 rtp_demuxer_select="sdp_demuxer"
3318 rtp_muxer_select="golomb jpegtables"
3319 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3320 rtsp_demuxer_select="http_protocol rtpdec"
3321 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3322 sap_demuxer_select="sdp_demuxer"
3323 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3324 sdp_demuxer_select="rtpdec"
3325 smoothstreaming_muxer_select="ismv_muxer"
3326 spdif_demuxer_select="adts_header"
3327 spdif_muxer_select="adts_header"
3328 spx_muxer_select="ogg_muxer"
3329 swf_demuxer_suggest="zlib"
3330 tak_demuxer_select="tak_parser"
3331 tg2_muxer_select="mov_muxer"
3332 tgp_muxer_select="mov_muxer"
3333 vobsub_demuxer_select="mpegps_demuxer"
3334 w64_demuxer_select="wav_demuxer"
3335 w64_muxer_select="wav_muxer"
3336 wav_demuxer_select="riffdec"
3337 wav_muxer_select="riffenc"
3338 webm_muxer_select="iso_media riffenc"
3339 webm_dash_manifest_demuxer_select="matroska_demuxer"
3340 wtv_demuxer_select="mpegts_demuxer riffdec"
3341 wtv_muxer_select="mpegts_muxer riffenc"
3342 xmv_demuxer_select="riffdec"
3343 xwma_demuxer_select="riffdec"
3344
3345 # indevs / outdevs
3346 android_camera_indev_deps="android camera2ndk mediandk pthreads"
3347 android_camera_indev_extralibs="-landroid -lcamera2ndk -lmediandk"
3348 alsa_indev_deps="alsa"
3349 alsa_outdev_deps="alsa"
3350 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3351 avfoundation_indev_suggest="coregraphics applicationservices"
3352 avfoundation_indev_extralibs="-framework Foundation"
3353 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3354 caca_outdev_deps="libcaca"
3355 decklink_deps_any="libdl LoadLibrary"
3356 decklink_indev_deps="decklink threads"
3357 decklink_indev_extralibs="-lstdc++"
3358 decklink_outdev_deps="decklink threads"
3359 decklink_outdev_suggest="libklvanc"
3360 decklink_outdev_extralibs="-lstdc++"
3361 dshow_indev_deps="IBaseFilter"
3362 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3363 fbdev_indev_deps="linux_fb_h"
3364 fbdev_outdev_deps="linux_fb_h"
3365 gdigrab_indev_deps="CreateDIBSection"
3366 gdigrab_indev_extralibs="-lgdi32"
3367 gdigrab_indev_select="bmp_decoder"
3368 iec61883_indev_deps="libiec61883"
3369 jack_indev_deps="libjack"
3370 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3371 kmsgrab_indev_deps="libdrm"
3372 lavfi_indev_deps="avfilter"
3373 libcdio_indev_deps="libcdio"
3374 libdc1394_indev_deps="libdc1394"
3375 openal_indev_deps="openal"
3376 opengl_outdev_deps="opengl"
3377 opengl_outdev_suggest="sdl2"
3378 oss_indev_deps_any="sys_soundcard_h"
3379 oss_outdev_deps_any="sys_soundcard_h"
3380 pulse_indev_deps="libpulse"
3381 pulse_outdev_deps="libpulse"
3382 sdl2_outdev_deps="sdl2"
3383 sndio_indev_deps="sndio"
3384 sndio_outdev_deps="sndio"
3385 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3386 v4l2_indev_suggest="libv4l2"
3387 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3388 v4l2_outdev_suggest="libv4l2"
3389 vfwcap_indev_deps="vfw32 vfwcap_defines"
3390 xcbgrab_indev_deps="libxcb"
3391 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3392 xv_outdev_deps="xlib"
3393
3394 # protocols
3395 async_protocol_deps="threads"
3396 bluray_protocol_deps="libbluray"
3397 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3398 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl mbedtls"
3399 ffrtmpcrypt_protocol_select="tcp_protocol"
3400 ffrtmphttp_protocol_conflict="librtmp_protocol"
3401 ffrtmphttp_protocol_select="http_protocol"
3402 ftp_protocol_select="tcp_protocol"
3403 gopher_protocol_select="network"
3404 http_protocol_select="tcp_protocol"
3405 http_protocol_suggest="zlib"
3406 httpproxy_protocol_select="tcp_protocol"
3407 httpproxy_protocol_suggest="zlib"
3408 https_protocol_select="tls_protocol"
3409 https_protocol_suggest="zlib"
3410 icecast_protocol_select="http_protocol"
3411 mmsh_protocol_select="http_protocol"
3412 mmst_protocol_select="network"
3413 rtmp_protocol_conflict="librtmp_protocol"
3414 rtmp_protocol_select="tcp_protocol"
3415 rtmp_protocol_suggest="zlib"
3416 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3417 rtmpe_protocol_suggest="zlib"
3418 rtmps_protocol_conflict="librtmp_protocol"
3419 rtmps_protocol_select="tls_protocol"
3420 rtmps_protocol_suggest="zlib"
3421 rtmpt_protocol_select="ffrtmphttp_protocol"
3422 rtmpt_protocol_suggest="zlib"
3423 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3424 rtmpte_protocol_suggest="zlib"
3425 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3426 rtmpts_protocol_suggest="zlib"
3427 rtp_protocol_select="udp_protocol"
3428 schannel_conflict="openssl gnutls libtls mbedtls"
3429 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3430 sctp_protocol_select="network"
3431 securetransport_conflict="openssl gnutls libtls mbedtls"
3432 srtp_protocol_select="rtp_protocol srtp"
3433 tcp_protocol_select="network"
3434 tls_protocol_deps_any="gnutls openssl schannel securetransport libtls mbedtls"
3435 tls_protocol_select="tcp_protocol"
3436 udp_protocol_select="network"
3437 udplite_protocol_select="network"
3438 unix_protocol_deps="sys_un_h"
3439 unix_protocol_select="network"
3440
3441 # external library protocols
3442 libamqp_protocol_deps="librabbitmq"
3443 libamqp_protocol_select="network"
3444 librtmp_protocol_deps="librtmp"
3445 librtmpe_protocol_deps="librtmp"
3446 librtmps_protocol_deps="librtmp"
3447 librtmpt_protocol_deps="librtmp"
3448 librtmpte_protocol_deps="librtmp"
3449 libsmbclient_protocol_deps="libsmbclient gplv3"
3450 libsrt_protocol_deps="libsrt"
3451 libsrt_protocol_select="network"
3452 libssh_protocol_deps="libssh"
3453 libtls_conflict="openssl gnutls mbedtls"
3454 libzmq_protocol_deps="libzmq"
3455 libzmq_protocol_select="network"
3456
3457 # filters
3458 afftdn_filter_deps="avcodec"
3459 afftdn_filter_select="fft"
3460 afftfilt_filter_deps="avcodec"
3461 afftfilt_filter_select="fft"
3462 afir_filter_deps="avcodec"
3463 afir_filter_select="rdft"
3464 amovie_filter_deps="avcodec avformat"
3465 aresample_filter_deps="swresample"
3466 asr_filter_deps="pocketsphinx"
3467 ass_filter_deps="libass"
3468 atempo_filter_deps="avcodec"
3469 atempo_filter_select="rdft"
3470 avgblur_opencl_filter_deps="opencl"
3471 avgblur_vulkan_filter_deps="vulkan libglslang"
3472 azmq_filter_deps="libzmq"
3473 blackframe_filter_deps="gpl"
3474 bm3d_filter_deps="avcodec"
3475 bm3d_filter_select="dct"
3476 boxblur_filter_deps="gpl"
3477 boxblur_opencl_filter_deps="opencl gpl"
3478 bs2b_filter_deps="libbs2b"
3479 chromaber_vulkan_filter_deps="vulkan libglslang"
3480 colorkey_opencl_filter_deps="opencl"
3481 colormatrix_filter_deps="gpl"
3482 convolution_opencl_filter_deps="opencl"
3483 convolve_filter_deps="avcodec"
3484 convolve_filter_select="fft"
3485 coreimage_filter_deps="coreimage appkit"
3486 coreimage_filter_extralibs="-framework OpenGL"
3487 coreimagesrc_filter_deps="coreimage appkit"
3488 coreimagesrc_filter_extralibs="-framework OpenGL"
3489 cover_rect_filter_deps="avcodec avformat gpl"
3490 cropdetect_filter_deps="gpl"
3491 deconvolve_filter_deps="avcodec"
3492 deconvolve_filter_select="fft"
3493 deinterlace_qsv_filter_deps="libmfx"
3494 deinterlace_vaapi_filter_deps="vaapi"
3495 delogo_filter_deps="gpl"
3496 denoise_vaapi_filter_deps="vaapi"
3497 derain_filter_select="dnn"
3498 deshake_filter_select="pixelutils"
3499 deshake_opencl_filter_deps="opencl"
3500 dilation_opencl_filter_deps="opencl"
3501 dnn_processing_filter_deps="swscale"
3502 dnn_processing_filter_select="dnn"
3503 drawtext_filter_deps="libfreetype"
3504 drawtext_filter_suggest="libfontconfig libfribidi"
3505 elbg_filter_deps="avcodec"
3506 eq_filter_deps="gpl"
3507 erosion_opencl_filter_deps="opencl"
3508 fftfilt_filter_deps="avcodec"
3509 fftfilt_filter_select="rdft"
3510 fftdnoiz_filter_deps="avcodec"
3511 fftdnoiz_filter_select="fft"
3512 find_rect_filter_deps="avcodec avformat gpl"
3513 firequalizer_filter_deps="avcodec"
3514 firequalizer_filter_select="rdft"
3515 flite_filter_deps="libflite"
3516 framerate_filter_select="scene_sad"
3517 freezedetect_filter_select="scene_sad"
3518 frei0r_filter_deps="frei0r libdl"
3519 frei0r_src_filter_deps="frei0r libdl"
3520 fspp_filter_deps="gpl"
3521 headphone_filter_select="fft"
3522 histeq_filter_deps="gpl"
3523 hqdn3d_filter_deps="gpl"
3524 interlace_filter_deps="gpl"
3525 kerndeint_filter_deps="gpl"
3526 ladspa_filter_deps="ladspa libdl"
3527 lensfun_filter_deps="liblensfun version3"
3528 lv2_filter_deps="lv2"
3529 mcdeint_filter_deps="avcodec gpl"
3530 movie_filter_deps="avcodec avformat"
3531 mpdecimate_filter_deps="gpl"
3532 mpdecimate_filter_select="pixelutils"
3533 minterpolate_filter_select="scene_sad"
3534 mptestsrc_filter_deps="gpl"
3535 negate_filter_deps="lut_filter"
3536 nlmeans_opencl_filter_deps="opencl"
3537 nnedi_filter_deps="gpl"
3538 ocr_filter_deps="libtesseract"
3539 ocv_filter_deps="libopencv"
3540 openclsrc_filter_deps="opencl"
3541 overlay_opencl_filter_deps="opencl"
3542 overlay_qsv_filter_deps="libmfx"
3543 overlay_qsv_filter_select="qsvvpp"
3544 overlay_vulkan_filter_deps="vulkan libglslang"
3545 owdenoise_filter_deps="gpl"
3546 pad_opencl_filter_deps="opencl"
3547 pan_filter_deps="swresample"
3548 perspective_filter_deps="gpl"
3549 phase_filter_deps="gpl"
3550 pp7_filter_deps="gpl"
3551 pp_filter_deps="gpl postproc"
3552 prewitt_opencl_filter_deps="opencl"
3553 procamp_vaapi_filter_deps="vaapi"
3554 program_opencl_filter_deps="opencl"
3555 pullup_filter_deps="gpl"
3556 removelogo_filter_deps="avcodec avformat swscale"
3557 repeatfields_filter_deps="gpl"
3558 resample_filter_deps="avresample"
3559 roberts_opencl_filter_deps="opencl"
3560 rubberband_filter_deps="librubberband"
3561 sab_filter_deps="gpl swscale"
3562 scale2ref_filter_deps="swscale"
3563 scale_filter_deps="swscale"
3564 scale_qsv_filter_deps="libmfx"
3565 select_filter_select="scene_sad"
3566 sharpness_vaapi_filter_deps="vaapi"
3567 showcqt_filter_deps="avcodec avformat swscale"
3568 showcqt_filter_suggest="libfontconfig libfreetype"
3569 showcqt_filter_select="fft"
3570 showfreqs_filter_deps="avcodec"
3571 showfreqs_filter_select="fft"
3572 showspatial_filter_select="fft"
3573 showspectrum_filter_deps="avcodec"
3574 showspectrum_filter_select="fft"
3575 showspectrumpic_filter_deps="avcodec"
3576 showspectrumpic_filter_select="fft"
3577 signature_filter_deps="gpl avcodec avformat"
3578 sinc_filter_select="rdft"
3579 smartblur_filter_deps="gpl swscale"
3580 sobel_opencl_filter_deps="opencl"
3581 sofalizer_filter_deps="libmysofa avcodec"
3582 sofalizer_filter_select="fft"
3583 spectrumsynth_filter_deps="avcodec"
3584 spectrumsynth_filter_select="fft"
3585 spp_filter_deps="gpl avcodec"
3586 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3587 sr_filter_deps="avformat swscale"
3588 sr_filter_select="dnn"
3589 stereo3d_filter_deps="gpl"
3590 subtitles_filter_deps="avformat avcodec libass"
3591 super2xsai_filter_deps="gpl"
3592 pixfmts_super2xsai_test_deps="super2xsai_filter"
3593 superequalizer_filter_select="rdft"
3594 surround_filter_select="rdft"
3595 tinterlace_filter_deps="gpl"
3596 tinterlace_merge_test_deps="tinterlace_filter"
3597 tinterlace_pad_test_deps="tinterlace_filter"
3598 tonemap_filter_deps="const_nan"
3599 tonemap_vaapi_filter_deps="vaapi VAProcFilterParameterBufferHDRToneMapping"
3600 tonemap_opencl_filter_deps="opencl const_nan"
3601 transpose_opencl_filter_deps="opencl"
3602 transpose_vaapi_filter_deps="vaapi VAProcPipelineCaps_rotation_flags"
3603 unsharp_opencl_filter_deps="opencl"
3604 uspp_filter_deps="gpl avcodec"
3605 vaguedenoiser_filter_deps="gpl"
3606 vidstabdetect_filter_deps="libvidstab"
3607 vidstabtransform_filter_deps="libvidstab"
3608 libvmaf_filter_deps="libvmaf pthreads"
3609 zmq_filter_deps="libzmq"
3610 zoompan_filter_deps="swscale"
3611 zscale_filter_deps="libzimg const_nan"
3612 scale_vaapi_filter_deps="vaapi"
3613 scale_vulkan_filter_deps="vulkan libglslang"
3614 vpp_qsv_filter_deps="libmfx"
3615 vpp_qsv_filter_select="qsvvpp"
3616 xfade_opencl_filter_deps="opencl"
3617 yadif_cuda_filter_deps="ffnvcodec"
3618 yadif_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3619
3620 # examples
3621 avio_list_dir_deps="avformat avutil"
3622 avio_reading_deps="avformat avcodec avutil"
3623 decode_audio_example_deps="avcodec avutil"
3624 decode_video_example_deps="avcodec avutil"
3625 demuxing_decoding_example_deps="avcodec avformat avutil"
3626 encode_audio_example_deps="avcodec avutil"
3627 encode_video_example_deps="avcodec avutil"
3628 extract_mvs_example_deps="avcodec avformat avutil"
3629 filter_audio_example_deps="avfilter avutil"
3630 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3631 filtering_video_example_deps="avfilter avcodec avformat avutil"
3632 http_multiclient_example_deps="avformat avutil fork"
3633 hw_decode_example_deps="avcodec avformat avutil"
3634 metadata_example_deps="avformat avutil"
3635 muxing_example_deps="avcodec avformat avutil swscale"
3636 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3637 remuxing_example_deps="avcodec avformat avutil"
3638 resampling_audio_example_deps="avutil swresample"
3639 scaling_video_example_deps="avutil swscale"
3640 transcode_aac_example_deps="avcodec avformat swresample"
3641 transcoding_example_deps="avfilter avcodec avformat avutil"
3642 vaapi_encode_example_deps="avcodec avutil h264_vaapi_encoder"
3643 vaapi_transcode_example_deps="avcodec avformat avutil h264_vaapi_encoder"
3644
3645 # EXTRALIBS_LIST
3646 cpu_init_extralibs="pthreads_extralibs"
3647 cws2fws_extralibs="zlib_extralibs"
3648
3649 # libraries, in any order
3650 avcodec_deps="avutil"
3651 avcodec_suggest="libm"
3652 avcodec_select="null_bsf"
3653 avdevice_deps="avformat avcodec avutil"
3654 avdevice_suggest="libm"
3655 avfilter_deps="avutil"
3656 avfilter_suggest="libm"
3657 avformat_deps="avcodec avutil"
3658 avformat_suggest="libm network zlib"
3659 avresample_deps="avutil"
3660 avresample_suggest="libm"
3661 avutil_suggest="clock_gettime ffnvcodec libm libdrm libmfx opencl user32 vaapi vulkan videotoolbox corefoundation corevideo coremedia bcrypt"
3662 postproc_deps="avutil gpl"
3663 postproc_suggest="libm"
3664 swresample_deps="avutil"
3665 swresample_suggest="libm libsoxr"
3666 swscale_deps="avutil"
3667 swscale_suggest="libm"
3668
3669 avcodec_extralibs="pthreads_extralibs iconv_extralibs dxva2_extralibs"
3670 avfilter_extralibs="pthreads_extralibs"
3671 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3672
3673 # programs
3674 ffmpeg_deps="avcodec avfilter avformat"
3675 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3676                hflip_filter null_filter
3677                transpose_filter trim_filter vflip_filter"
3678 ffmpeg_suggest="ole32 psapi shell32"
3679 ffplay_deps="avcodec avformat swscale swresample sdl2"
3680 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3681 ffplay_suggest="shell32"
3682 ffprobe_deps="avcodec avformat"
3683 ffprobe_suggest="shell32"
3684
3685 # documentation
3686 podpages_deps="perl"
3687 manpages_deps="perl pod2man"
3688 htmlpages_deps="perl"
3689 htmlpages_deps_any="makeinfo_html texi2html"
3690 txtpages_deps="perl makeinfo"
3691 doc_deps_any="manpages htmlpages podpages txtpages"
3692
3693 # default parameters
3694
3695 logfile="ffbuild/config.log"
3696
3697 # installation paths
3698 prefix_default="/usr/local"
3699 bindir_default='${prefix}/bin'
3700 datadir_default='${prefix}/share/ffmpeg'
3701 docdir_default='${prefix}/share/doc/ffmpeg'
3702 incdir_default='${prefix}/include'
3703 libdir_default='${prefix}/lib'
3704 mandir_default='${prefix}/share/man'
3705
3706 # toolchain
3707 ar_default="ar"
3708 cc_default="gcc"
3709 cxx_default="g++"
3710 host_cc_default="gcc"
3711 doxygen_default="doxygen"
3712 install="install"
3713 ln_s_default="ln -s -f"
3714 nm_default="nm -g"
3715 pkg_config_default=pkg-config
3716 ranlib_default="ranlib"
3717 strip_default="strip"
3718 version_script='--version-script'
3719 objformat="elf32"
3720 x86asmexe_default="nasm"
3721 windres_default="windres"
3722 striptype="direct"
3723
3724 # OS
3725 target_os_default=$(tolower $(uname -s))
3726 host_os=$target_os_default
3727
3728 # machine
3729 if test "$target_os_default" = aix; then
3730     arch_default=$(uname -p)
3731     strip_default="strip -X32_64"
3732     nm_default="nm -g -X32_64"
3733 else
3734     arch_default=$(uname -m)
3735 fi
3736 cpu="generic"
3737 intrinsics="none"
3738
3739 # configurable options
3740 enable $PROGRAM_LIST
3741 enable $DOCUMENT_LIST
3742 enable $EXAMPLE_LIST
3743 enable $(filter_out avresample $LIBRARY_LIST)
3744 enable stripping
3745
3746 enable asm
3747 enable debug
3748 enable doc
3749 enable faan faandct faanidct
3750 enable large_tests
3751 enable optimizations
3752 enable runtime_cpudetect
3753 enable safe_bitstream_reader
3754 enable static
3755 enable swscale_alpha
3756 enable valgrind_backtrace
3757
3758 sws_max_filter_size_default=256
3759 set_default sws_max_filter_size
3760
3761 # internal components are enabled by default
3762 enable $EXTRALIBS_LIST
3763
3764 # Avoid external, non-system, libraries getting enabled by dependency resolution
3765 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3766
3767 # build settings
3768 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3769 LIBPREF="lib"
3770 LIBSUF=".a"
3771 FULLNAME='$(NAME)$(BUILDSUF)'
3772 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3773 SLIBPREF="lib"
3774 SLIBSUF=".so"
3775 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3776 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3777 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3778 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3779 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3780 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3781 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3782
3783 asflags_filter=echo
3784 cflags_filter=echo
3785 ldflags_filter=echo
3786
3787 AS_C='-c'
3788 AS_O='-o $@'
3789 CC_C='-c'
3790 CC_E='-E -o $@'
3791 CC_O='-o $@'
3792 CXX_C='-c'
3793 CXX_O='-o $@'
3794 OBJCC_C='-c'
3795 OBJCC_E='-E -o $@'
3796 OBJCC_O='-o $@'
3797 X86ASM_O='-o $@'
3798 LD_O='-o $@'
3799 LD_LIB='-l%'
3800 LD_PATH='-L'
3801 HOSTCC_C='-c'
3802 HOSTCC_E='-E -o $@'
3803 HOSTCC_O='-o $@'
3804 HOSTLD_O='-o $@'
3805 NVCC_C='-c'
3806 NVCC_O='-o $@'
3807
3808 host_extralibs='-lm'
3809 host_cflags_filter=echo
3810 host_ldflags_filter=echo
3811
3812 target_path='$(CURDIR)'
3813
3814 # since the object filename is not given with the -MM flag, the compiler
3815 # is only able to print the basename, and we must add the path ourselves
3816 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3817 DEPFLAGS='-MM'
3818
3819 mkdir -p ffbuild
3820
3821 # find source path
3822 if test -f configure; then
3823     source_path=.
3824 elif test -f src/configure; then
3825     source_path=src
3826 else
3827     source_path=$(cd $(dirname "$0"); pwd)
3828     case "$source_path" in
3829         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3830     esac
3831     test -e "$source_path/config.h" &&
3832         die "Out of tree builds are impossible with config.h in source dir."
3833 fi
3834
3835 for v in "$@"; do
3836     r=${v#*=}
3837     l=${v%"$r"}
3838     r=$(sh_quote "$r")
3839     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3840 done
3841
3842 find_things_extern(){
3843     thing=$1
3844     pattern=$2
3845     file=$source_path/$3
3846     out=${4:-$thing}
3847     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$out/p" "$file"
3848 }
3849
3850 find_filters_extern(){
3851     file=$source_path/$1
3852     sed -n 's/^extern AVFilter ff_[avfsinkrc]\{2,5\}_\([[:alnum:]_]\{1,\}\);/\1_filter/p' $file
3853 }
3854
3855 FILTER_LIST=$(find_filters_extern libavfilter/allfilters.c)
3856 OUTDEV_LIST=$(find_things_extern muxer AVOutputFormat libavdevice/alldevices.c outdev)
3857 INDEV_LIST=$(find_things_extern demuxer AVInputFormat libavdevice/alldevices.c indev)
3858 MUXER_LIST=$(find_things_extern muxer AVOutputFormat libavformat/allformats.c)
3859 DEMUXER_LIST=$(find_things_extern demuxer AVInputFormat libavformat/allformats.c)
3860 ENCODER_LIST=$(find_things_extern encoder AVCodec libavcodec/allcodecs.c)
3861 DECODER_LIST=$(find_things_extern decoder AVCodec libavcodec/allcodecs.c)
3862 CODEC_LIST="
3863     $ENCODER_LIST
3864     $DECODER_LIST
3865 "
3866 PARSER_LIST=$(find_things_extern parser AVCodecParser libavcodec/parsers.c)
3867 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3868 HWACCEL_LIST=$(find_things_extern hwaccel AVHWAccel libavcodec/hwaccels.h)
3869 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3870
3871 AVCODEC_COMPONENTS_LIST="
3872     $BSF_LIST
3873     $DECODER_LIST
3874     $ENCODER_LIST
3875     $HWACCEL_LIST
3876     $PARSER_LIST
3877 "
3878
3879 AVDEVICE_COMPONENTS_LIST="
3880     $INDEV_LIST
3881     $OUTDEV_LIST
3882 "
3883
3884 AVFILTER_COMPONENTS_LIST="
3885     $FILTER_LIST
3886 "
3887
3888 AVFORMAT_COMPONENTS_LIST="
3889     $DEMUXER_LIST
3890     $MUXER_LIST
3891     $PROTOCOL_LIST
3892 "
3893
3894 ALL_COMPONENTS="
3895     $AVCODEC_COMPONENTS_LIST
3896     $AVDEVICE_COMPONENTS_LIST
3897     $AVFILTER_COMPONENTS_LIST
3898     $AVFORMAT_COMPONENTS_LIST
3899 "
3900
3901 for n in $COMPONENT_LIST; do
3902     v=$(toupper ${n%s})_LIST
3903     eval enable \$$v
3904     eval ${n}_if_any="\$$v"
3905 done
3906
3907 enable $ARCH_EXT_LIST
3908
3909 die_unknown(){
3910     echo "Unknown option \"$1\"."
3911     echo "See $0 --help for available options."
3912     exit 1
3913 }
3914
3915 print_in_columns() {
3916     tr ' ' '\n' | sort | tr '\r\n' '  ' | awk -v col_width=24 -v width="$ncols" '
3917     {
3918         num_cols = width > col_width ? int(width / col_width) : 1;
3919         num_rows = int((NF + num_cols-1) / num_cols);
3920         y = x = 1;
3921         for (y = 1; y <= num_rows; y++) {
3922             i = y;
3923             for (x = 1; x <= num_cols; x++) {
3924                 if (i <= NF) {
3925                   line = sprintf("%s%-" col_width "s", line, $i);
3926                 }
3927                 i = i + num_rows;
3928             }
3929             print line; line = "";
3930         }
3931     }' | sed 's/ *$//'
3932 }
3933
3934 show_list() {
3935     suffix=_$1
3936     shift
3937     echo $* | sed s/$suffix//g | print_in_columns
3938     exit 0
3939 }
3940
3941 rand_list(){
3942     IFS=', '
3943     set -- $*
3944     unset IFS
3945     for thing; do
3946         comp=${thing%:*}
3947         prob=${thing#$comp}
3948         prob=${prob#:}
3949         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3950         echo "prob ${prob:-0.5}"
3951         printf '%s\n' $comp
3952     done
3953 }
3954
3955 do_random(){
3956     action=$1
3957     shift
3958     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3959     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3960 }
3961
3962 for opt do
3963     optval="${opt#*=}"
3964     case "$opt" in
3965         --extra-ldflags=*)
3966             add_ldflags $optval
3967         ;;
3968         --extra-ldexeflags=*)
3969             add_ldexeflags $optval
3970         ;;
3971         --extra-ldsoflags=*)
3972             add_ldsoflags $optval
3973         ;;
3974         --extra-ldlibflags=*)
3975             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3976                  "removed in the future. Use --extra-ldsoflags instead."
3977             add_ldsoflags $optval
3978         ;;
3979         --extra-libs=*)
3980             add_extralibs $optval
3981         ;;
3982         --disable-devices)
3983             disable $INDEV_LIST $OUTDEV_LIST
3984         ;;
3985         --enable-debug=*)
3986             debuglevel="$optval"
3987         ;;
3988         --disable-programs)
3989             disable $PROGRAM_LIST
3990         ;;
3991         --disable-everything)
3992             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3993         ;;
3994         --disable-all)
3995             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3996             disable $LIBRARY_LIST $PROGRAM_LIST doc
3997             enable avutil
3998         ;;
3999         --enable-random|--disable-random)
4000             action=${opt%%-random}
4001             do_random ${action#--} $COMPONENT_LIST
4002         ;;
4003         --enable-random=*|--disable-random=*)
4004             action=${opt%%-random=*}
4005             do_random ${action#--} $optval
4006         ;;
4007         --enable-sdl)
4008             enable sdl2
4009         ;;
4010         --enable-*=*|--disable-*=*)
4011             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
4012             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
4013             eval list=\$$(toupper $thing)_LIST
4014             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
4015             list=$(filter "$name" $list)
4016             [ "$list" = "" ] && warn "Option $opt did not match anything"
4017             test $action = enable && warn_if_gets_disabled $list
4018             $action $list
4019         ;;
4020         --enable-yasm|--disable-yasm)
4021             warn "The ${opt} option is only provided for compatibility and will be\n"\
4022                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
4023             test $opt = --enable-yasm && x86asm=yes || x86asm=no
4024         ;;
4025         --yasmexe=*)
4026             warn "The --yasmexe option is only provided for compatibility and will be\n"\
4027                  "removed in the future. Use --x86asmexe instead."
4028             x86asmexe="$optval"
4029         ;;
4030         --enable-?*|--disable-?*)
4031             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
4032             if is_in $option $COMPONENT_LIST; then
4033                 test $action = disable && action=unset
4034                 eval $action \$$(toupper ${option%s})_LIST
4035             elif is_in $option $CMDLINE_SELECT; then
4036                 $action $option
4037             else
4038                 die_unknown $opt
4039             fi
4040         ;;
4041         --list-*)
4042             NAME="${opt#--list-}"
4043             is_in $NAME $COMPONENT_LIST || die_unknown $opt
4044             NAME=${NAME%s}
4045             eval show_list $NAME \$$(toupper $NAME)_LIST
4046         ;;
4047         --help|-h) show_help
4048         ;;
4049         --quiet|-q) quiet=yes
4050         ;;
4051         --fatal-warnings) enable fatal_warnings
4052         ;;
4053         --libfuzzer=*)
4054             libfuzzer_path="$optval"
4055         ;;
4056         *)
4057             optname="${opt%%=*}"
4058             optname="${optname#--}"
4059             optname=$(echo "$optname" | sed 's/-/_/g')
4060             if is_in $optname $CMDLINE_SET; then
4061                 eval $optname='$optval'
4062             elif is_in $optname $CMDLINE_APPEND; then
4063                 append $optname "$optval"
4064             else
4065                 die_unknown $opt
4066             fi
4067         ;;
4068     esac
4069 done
4070
4071 for e in $env; do
4072     eval "export $e"
4073 done
4074
4075 if disabled autodetect; then
4076
4077     # Unless iconv is explicitely disabled by the user, we still want to probe
4078     # for the iconv from the libc.
4079     disabled iconv || enable libc_iconv
4080
4081     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
4082     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
4083 fi
4084 # Mark specifically enabled, but normally autodetected libraries as requested.
4085 for lib in $AUTODETECT_LIBS; do
4086     enabled $lib && request $lib
4087 done
4088 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
4089 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
4090 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
4091
4092 disabled logging && logfile=/dev/null
4093
4094 # command line configuration sanity checks
4095
4096 # we need to build at least one lib type
4097 if ! enabled_any static shared; then
4098     cat <<EOF
4099 At least one library type must be built.
4100 Specify --enable-static to build the static libraries or --enable-shared to
4101 build the shared libraries as well. To only build the shared libraries specify
4102 --disable-static in addition to --enable-shared.
4103 EOF
4104     exit 1
4105 fi
4106
4107 die_license_disabled() {
4108     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
4109 }
4110
4111 die_license_disabled_gpl() {
4112     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
4113 }
4114
4115 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
4116 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
4117
4118 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
4119 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
4120
4121 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4122
4123 if enabled nonfree; then
4124     license="nonfree and unredistributable"
4125 elif enabled gplv3; then
4126     license="GPL version 3 or later"
4127 elif enabled lgplv3; then
4128     license="LGPL version 3 or later"
4129 elif enabled gpl; then
4130     license="GPL version 2 or later"
4131 else
4132     license="LGPL version 2.1 or later"
4133 fi
4134
4135 enabled_all gnutls openssl &&
4136     die "GnuTLS and OpenSSL must not be enabled at the same time."
4137
4138 enabled_all gnutls mbedtls &&
4139     die "GnuTLS and mbedTLS must not be enabled at the same time."
4140
4141 enabled_all openssl mbedtls &&
4142     die "OpenSSL and mbedTLS must not be enabled at the same time."
4143
4144 # Disable all the library-specific components if the library itself
4145 # is disabled, see AVCODEC_LIST and following _LIST variables.
4146
4147 disable_components(){
4148     disabled ${1} && disable $(
4149         eval components="\$$(toupper ${1})_COMPONENTS"
4150         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
4151     )
4152 }
4153
4154 map 'disable_components $v' $LIBRARY_LIST
4155
4156 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
4157 set >> $logfile
4158
4159 test -n "$valgrind" && toolchain="valgrind-memcheck"
4160
4161 enabled ossfuzz && ! echo $CFLAGS | grep -q -- "-fsanitize="  && ! echo $CFLAGS | grep -q -- "-fcoverage-mapping" &&{
4162     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
4163     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
4164 }
4165
4166 case "$toolchain" in
4167     *-asan)
4168         cc_default="${toolchain%-asan}"
4169         add_cflags  -fsanitize=address
4170         add_ldflags -fsanitize=address
4171     ;;
4172     *-msan)
4173         cc_default="${toolchain%-msan}"
4174         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
4175         add_ldflags -fsanitize=memory
4176     ;;
4177     *-tsan)
4178         cc_default="${toolchain%-tsan}"
4179         add_cflags  -fsanitize=thread
4180         add_ldflags -fsanitize=thread
4181         case "$toolchain" in
4182             gcc-tsan)
4183                 add_cflags  -fPIC
4184                 add_ldflags -fPIC
4185                 ;;
4186         esac
4187     ;;
4188     *-usan)
4189         cc_default="${toolchain%-usan}"
4190         add_cflags  -fsanitize=undefined
4191         add_ldflags -fsanitize=undefined
4192     ;;
4193     valgrind-*)
4194         target_exec_default="valgrind"
4195         case "$toolchain" in
4196             valgrind-massif)
4197                 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"
4198                 ;;
4199             valgrind-memcheck)
4200                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
4201                 ;;
4202         esac
4203     ;;
4204     msvc)
4205         # Check whether the current MSVC version needs the C99 converter.
4206         # From MSVC 2013 (compiler major version 18) onwards, it does actually
4207         # support enough of C99 to build ffmpeg. Default to the new
4208         # behaviour if the regexp was unable to match anything, since this
4209         # successfully parses the version number of existing supported
4210         # versions that require the converter (MSVC 2010 and 2012).
4211         cl_major_ver=$(cl.exe 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
4212         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
4213             cc_default="cl.exe"
4214             cxx_default="cl.exe"
4215         else
4216             die "Unsupported MSVC version (2013 or newer required)"
4217         fi
4218         ld_default="$source_path/compat/windows/mslink"
4219         nm_default="dumpbin.exe -symbols"
4220         ar_default="lib.exe"
4221         case "$arch" in
4222         aarch64|arm64)
4223             as_default="armasm64.exe"
4224             ;;
4225         arm*)
4226             as_default="armasm.exe"
4227             ;;
4228         esac
4229         target_os_default="win32"
4230         # Use a relative path for TMPDIR. This makes sure all the
4231         # ffconf temp files are written with a relative path, avoiding
4232         # issues with msys/win32 path conversion for MSVC parameters
4233         # such as -Fo<file> or -out:<file>.
4234         TMPDIR=.
4235     ;;
4236     icl)
4237         cc_default="icl"
4238         ld_default="xilink"
4239         nm_default="dumpbin -symbols"
4240         ar_default="xilib"
4241         target_os_default="win32"
4242         TMPDIR=.
4243     ;;
4244     gcov)
4245         add_cflags  -fprofile-arcs -ftest-coverage
4246         add_ldflags -fprofile-arcs -ftest-coverage
4247     ;;
4248     llvm-cov)
4249         add_cflags -fprofile-arcs -ftest-coverage
4250         add_ldflags --coverage
4251     ;;
4252     hardened)
4253         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
4254         add_cflags   -fno-strict-overflow -fstack-protector-all
4255         add_ldflags  -Wl,-z,relro -Wl,-z,now
4256         add_cflags   -fPIE
4257         add_ldexeflags -fPIE -pie
4258     ;;
4259     ?*)
4260         die "Unknown toolchain $toolchain"
4261     ;;
4262 esac
4263
4264 if test -n "$cross_prefix"; then
4265     test -n "$arch" && test -n "$target_os" ||
4266         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
4267     enable cross_compile
4268 fi
4269
4270 set_default target_os
4271 if test "$target_os" = android; then
4272     cc_default="clang"
4273 fi
4274
4275 ar_default="${cross_prefix}${ar_default}"
4276 cc_default="${cross_prefix}${cc_default}"
4277 cxx_default="${cross_prefix}${cxx_default}"
4278 nm_default="${cross_prefix}${nm_default}"
4279 pkg_config_default="${cross_prefix}${pkg_config_default}"
4280 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
4281     ranlib_default="${cross_prefix}${ranlib_default} -D"
4282 else
4283     ranlib_default="${cross_prefix}${ranlib_default}"
4284 fi
4285 strip_default="${cross_prefix}${strip_default}"
4286 windres_default="${cross_prefix}${windres_default}"
4287
4288 sysinclude_default="${sysroot}/usr/include"
4289
4290 if enabled cuda_sdk; then
4291     warn "Option --enable-cuda-sdk is deprecated. Use --enable-cuda-nvcc instead."
4292     enable cuda_nvcc
4293 fi
4294
4295 if enabled cuda_nvcc; then
4296     nvcc_default="nvcc"
4297     nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
4298 else
4299     nvcc_default="clang"
4300     nvccflags_default="--cuda-gpu-arch=sm_30 -O2"
4301     NVCC_C=""
4302 fi
4303
4304 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
4305     target_exec x86asmexe nvcc
4306 enabled cross_compile || host_cc_default=$cc
4307 set_default host_cc
4308
4309 pkg_config_fail_message=""
4310 if ! $pkg_config --version >/dev/null 2>&1; then
4311     warn "$pkg_config not found, library detection may fail."
4312     pkg_config=false
4313 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
4314     pkg_config_fail_message="
4315 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
4316 fi
4317
4318 if test $doxygen != $doxygen_default && \
4319   ! $doxygen --version >/dev/null 2>&1; then
4320     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
4321 fi
4322
4323 exesuf() {
4324     case $1 in
4325         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
4326     esac
4327 }
4328
4329 EXESUF=$(exesuf $target_os)
4330 HOSTEXESUF=$(exesuf $host_os)
4331
4332 # set temporary file name
4333 : ${TMPDIR:=$TEMPDIR}
4334 : ${TMPDIR:=$TMP}
4335 : ${TMPDIR:=/tmp}
4336
4337 if [ -n "$tempprefix" ] ; then
4338     mktemp(){
4339         tmpname="$tempprefix.${HOSTNAME}.${UID}"
4340         echo "$tmpname"
4341         mkdir "$tmpname"
4342     }
4343 elif ! test_cmd mktemp -u XXXXXX; then
4344     # simple replacement for missing mktemp
4345     # NOT SAFE FOR GENERAL USE
4346     mktemp(){
4347         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
4348         echo "$tmpname"
4349         mkdir "$tmpname"
4350     }
4351 fi
4352
4353 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
4354     die "Unable to create temporary directory in $TMPDIR."
4355
4356 tmpfile(){
4357     tmp="${FFTMPDIR}/test"$2
4358     (set -C; exec > $tmp) 2> /dev/null ||
4359         die "Unable to create temporary file in $FFTMPDIR."
4360     eval $1=$tmp
4361 }
4362
4363 trap 'rm -rf -- "$FFTMPDIR"' EXIT
4364 trap 'exit 2' INT
4365
4366 tmpfile TMPASM .asm
4367 tmpfile TMPC   .c
4368 tmpfile TMPCPP .cpp
4369 tmpfile TMPE   $EXESUF
4370 tmpfile TMPH   .h
4371 tmpfile TMPM   .m
4372 tmpfile TMPCU  .cu
4373 tmpfile TMPO   .o
4374 tmpfile TMPS   .S
4375 tmpfile TMPSH  .sh
4376 tmpfile TMPV   .ver
4377
4378 unset -f mktemp
4379
4380 chmod +x $TMPE
4381
4382 # make sure we can execute files in $TMPDIR
4383 cat > $TMPSH 2>> $logfile <<EOF
4384 #! /bin/sh
4385 EOF
4386 chmod +x $TMPSH >> $logfile 2>&1
4387 if ! $TMPSH >> $logfile 2>&1; then
4388     cat <<EOF
4389 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
4390 variable to another directory and make sure that it is not mounted noexec.
4391 EOF
4392     die "Sanity test failed."
4393 fi
4394
4395 armasm_flags(){
4396     for flag; do
4397         case $flag in
4398             # Filter out MSVC cl.exe options from cflags that shouldn't
4399             # be passed to gas-preprocessor
4400             -M[TD]*)                                            ;;
4401             *)                  echo $flag                      ;;
4402         esac
4403    done
4404 }
4405
4406 cparser_flags(){
4407     for flag; do
4408         case $flag in
4409             -Wno-switch)             echo -Wno-switch-enum ;;
4410             -Wno-format-zero-length) ;;
4411             -Wdisabled-optimization) ;;
4412             -Wno-pointer-sign)       echo -Wno-other ;;
4413             *)                       echo $flag ;;
4414         esac
4415     done
4416 }
4417
4418 msvc_common_flags(){
4419     for flag; do
4420         case $flag in
4421             # In addition to specifying certain flags under the compiler
4422             # specific filters, they must be specified here as well or else the
4423             # generic catch all at the bottom will print the original flag.
4424             -Wall)                ;;
4425             -Wextra)              ;;
4426             -std=c*)              ;;
4427             # Common flags
4428             -fomit-frame-pointer) ;;
4429             -g)                   echo -Z7 ;;
4430             -fno-math-errno)      ;;
4431             -fno-common)          ;;
4432             -fno-signed-zeros)    ;;
4433             -fPIC)                ;;
4434             -mthumb)              ;;
4435             -march=*)             ;;
4436             -lz)                  echo zlib.lib ;;
4437             -lx264)               echo libx264.lib ;;
4438             -lstdc++)             ;;
4439             -l*)                  echo ${flag#-l}.lib ;;
4440             -LARGEADDRESSAWARE)   echo $flag ;;
4441             -L*)                  echo -libpath:${flag#-L} ;;
4442             *)                    echo $flag ;;
4443         esac
4444     done
4445 }
4446
4447 msvc_flags(){
4448     msvc_common_flags "$@"
4449     for flag; do
4450         case $flag in
4451             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4452                                        -wd4554 ;;
4453             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4454                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4455                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4456                                        -wd4307 \
4457                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4458         esac
4459     done
4460 }
4461
4462 icl_flags(){
4463     msvc_common_flags "$@"
4464     for flag; do
4465         case $flag in
4466             # Despite what Intel's documentation says -Wall, which is supported
4467             # on Windows, does enable remarks so disable them here.
4468             -Wall)                echo $flag -Qdiag-disable:remark ;;
4469             -std=c99)             echo -Qstd=c99 ;;
4470             -flto)                echo -ipo ;;
4471         esac
4472     done
4473 }
4474
4475 icc_flags(){
4476     for flag; do
4477         case $flag in
4478             -flto)                echo -ipo ;;
4479             *)                    echo $flag ;;
4480         esac
4481     done
4482 }
4483
4484 suncc_flags(){
4485     for flag; do
4486         case $flag in
4487             -march=*|-mcpu=*)
4488                 case "${flag#*=}" in
4489                     native)                   echo -xtarget=native       ;;
4490                     v9|niagara)               echo -xarch=sparc          ;;
4491                     ultrasparc)               echo -xarch=sparcvis       ;;
4492                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4493                     i586|pentium)             echo -xchip=pentium        ;;
4494                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4495                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4496                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4497                     pentium4*)          echo -xtarget=pentium4           ;;
4498                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4499                     *-sse3)             echo -xarch=sse3                 ;;
4500                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4501                     bonnell)                   echo -xarch=ssse3         ;;
4502                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4503                     westmere)                  echo -xtarget=westmere    ;;
4504                     silvermont)                echo -xarch=sse4_2        ;;
4505                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4506                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4507                                                echo -xarch=avx           ;;
4508                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4509                     btver1)                    echo -xarch=amdsse4a      ;;
4510                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4511                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4512                     k8|opteron|athlon64|athlon-fx)
4513                                                echo -xarch=sse2a         ;;
4514                     athlon*)                   echo -xarch=pentium_proa  ;;
4515                 esac
4516                 ;;
4517             -std=c99)             echo -xc99              ;;
4518             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4519             -fPIC)                echo -KPIC -xcode=pic32 ;;
4520             -W*,*)                echo $flag              ;;
4521             -f*-*|-W*|-mimpure-text)                      ;;
4522             -shared)              echo -G                 ;;
4523             *)                    echo $flag              ;;
4524         esac
4525     done
4526 }
4527
4528 probe_cc(){
4529     pfx=$1
4530     _cc=$2
4531     first=$3
4532
4533     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4534     unset _ld_o _ldflags _ld_lib _ld_path
4535     unset _depflags _DEPCMD _DEPFLAGS
4536     _flags_filter=echo
4537
4538     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4539         true # no-op to avoid reading stdin in following checks
4540     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4541         _type=llvm_gcc
4542         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4543         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4544         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4545         _cflags_speed='-O3'
4546         _cflags_size='-Os'
4547     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4548         _type=gcc
4549         gcc_version=$($_cc --version | head -n1)
4550         gcc_basever=$($_cc -dumpversion)
4551         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4552         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4553         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4554         case $gcc_basever in
4555             2) ;;
4556             2.*) ;;
4557             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4558         esac
4559         if [ "$first" = true ]; then
4560             case $gcc_basever in
4561                 4.2*)
4562                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4563             esac
4564         fi
4565         _cflags_speed='-O3'
4566         _cflags_size='-Os'
4567     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4568         _type=icc
4569         _ident=$($_cc --version | head -n1)
4570         _depflags='-MMD'
4571         _cflags_speed='-O3'
4572         _cflags_size='-Os'
4573         _cflags_noopt='-O1'
4574         _flags_filter=icc_flags
4575     elif $_cc -v 2>&1 | grep -q xlc; then
4576         _type=xlc
4577         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4578         _cflags_speed='-O5'
4579         _cflags_size='-O5 -qcompact'
4580     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4581         test -d "$sysroot" || die "No valid sysroot specified."
4582         _type=armcc
4583         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4584         armcc_conf="$PWD/armcc.conf"
4585         $_cc --arm_linux_configure                 \
4586              --arm_linux_config_file="$armcc_conf" \
4587              --configure_sysroot="$sysroot"        \
4588              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4589              die "Error creating armcc configuration file."
4590         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4591         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4592         as_default="${cross_prefix}gcc"
4593         _depflags='-MMD'
4594         _cflags_speed='-O3'
4595         _cflags_size='-Os'
4596     elif $_cc -v 2>&1 | grep -q clang && ! $_cc -? > /dev/null 2>&1; then
4597         _type=clang
4598         _ident=$($_cc --version 2>/dev/null | head -n1)
4599         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4600         _cflags_speed='-O3'
4601         _cflags_size='-Oz'
4602     elif $_cc -V 2>&1 | grep -q Sun; then
4603         _type=suncc
4604         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4605         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4606         _DEPFLAGS='-xM1 -xc99'
4607         _ldflags='-std=c99'
4608         _cflags_speed='-O5'
4609         _cflags_size='-O5 -xspace'
4610         _flags_filter=suncc_flags
4611     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4612         _type=pathscale
4613         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4614         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4615         _cflags_speed='-O2'
4616         _cflags_size='-Os'
4617         _flags_filter='filter_out -Wdisabled-optimization'
4618     elif $_cc -v 2>&1 | grep -q Open64; then
4619         _type=open64
4620         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4621         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4622         _cflags_speed='-O2'
4623         _cflags_size='-Os'
4624         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4625     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4626         _type=armasm
4627         _ident=$($_cc | head -n1)
4628         # 4509: "This form of conditional instruction is deprecated"
4629         _flags="-nologo -ignore 4509"
4630         _flags_filter=armasm_flags
4631     elif $_cc 2>&1 | grep -q Intel; then
4632         _type=icl
4633         _ident=$($_cc 2>&1 | head -n1)
4634         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4635         # Not only is O3 broken on 13.x+ but it is slower on all previous
4636         # versions (tested) as well.
4637         _cflags_speed="-O2"
4638         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4639         if $_cc 2>&1 | grep -q Linker; then
4640             _ld_o='-out:$@'
4641         else
4642             _ld_o='-Fe$@'
4643         fi
4644         _cc_o='-Fo$@'
4645         _cc_e='-P'
4646         _flags_filter=icl_flags
4647         _ld_lib='lib%.a'
4648         _ld_path='-libpath:'
4649         # -Qdiag-error to make icl error when seeing certain unknown arguments
4650         _flags='-nologo -Qdiag-error:4044,10157'
4651         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4652         # with MSVC which enables it by default.
4653         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4654         disable stripping
4655     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4656         # lld can emulate multiple different linkers; in ms link.exe mode,
4657         # the -? parameter gives the help output which contains an identifyable
4658         # string, while it gives an error in other modes.
4659         _type=lld-link
4660         # The link.exe mode doesn't have a switch for getting the version,
4661         # but we can force it back to gnu mode and get the version from there.
4662         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4663         _ld_o='-out:$@'
4664         _flags_filter=msvc_flags
4665         _ld_lib='lib%.a'
4666         _ld_path='-libpath:'
4667     elif $_cc -nologo- 2>&1 | grep -q Microsoft || { $_cc -v 2>&1 | grep -q clang && $_cc -? > /dev/null 2>&1; }; then
4668         _type=msvc
4669         if $_cc -nologo- 2>&1 | grep -q Microsoft; then
4670             _ident=$($_cc 2>&1 | head -n1 | tr -d '\r')
4671         else
4672             _ident=$($_cc --version 2>/dev/null | head -n1 | tr -d '\r')
4673         fi
4674         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4675         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4676         _cflags_speed="-O2"
4677         _cflags_size="-O1"
4678         _cflags_noopt="-O1"
4679         if $_cc -nologo- 2>&1 | grep -q Linker; then
4680             _ld_o='-out:$@'
4681         else
4682             _ld_o='-Fe$@'
4683         fi
4684         _cc_o='-Fo$@'
4685         _cc_e='-P -Fi$@'
4686         _flags_filter=msvc_flags
4687         _ld_lib='lib%.a'
4688         _ld_path='-libpath:'
4689         _flags='-nologo'
4690         disable stripping
4691     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4692         _type=cparser
4693         _ident=$($_cc --version | head -n1)
4694         _depflags='-MMD'
4695         _cflags_speed='-O4'
4696         _cflags_size='-O2'
4697         _flags_filter=cparser_flags
4698     fi
4699
4700     eval ${pfx}_type=\$_type
4701     eval ${pfx}_ident=\$_ident
4702 }
4703
4704 set_ccvars(){
4705     eval ${1}_C=\${_cc_c-\${${1}_C}}
4706     eval ${1}_E=\${_cc_e-\${${1}_E}}
4707     eval ${1}_O=\${_cc_o-\${${1}_O}}
4708
4709     if [ -n "$_depflags" ]; then
4710         eval ${1}_DEPFLAGS=\$_depflags
4711     else
4712         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4713         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4714         eval DEP${1}FLAGS=\$_flags
4715     fi
4716 }
4717
4718 probe_cc cc "$cc" "true"
4719 cflags_filter=$_flags_filter
4720 cflags_speed=$_cflags_speed
4721 cflags_size=$_cflags_size
4722 cflags_noopt=$_cflags_noopt
4723 add_cflags $_flags $_cflags
4724 cc_ldflags=$_ldflags
4725 set_ccvars CC
4726 set_ccvars CXX
4727
4728 probe_cc hostcc "$host_cc"
4729 host_cflags_filter=$_flags_filter
4730 host_cflags_speed=$_cflags_speed
4731 add_host_cflags  $_flags $_cflags
4732 set_ccvars HOSTCC
4733
4734 test -n "$cc_type" && enable $cc_type ||
4735     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4736
4737 : ${as_default:=$cc}
4738 : ${objcc_default:=$cc}
4739 : ${dep_cc_default:=$cc}
4740 : ${ld_default:=$cc}
4741 : ${host_ld_default:=$host_cc}
4742 set_default ar as objcc dep_cc ld ln_s host_ld windres
4743
4744 probe_cc as "$as"
4745 asflags_filter=$_flags_filter
4746 add_asflags $_flags $_cflags
4747 set_ccvars AS
4748
4749 probe_cc objcc "$objcc"
4750 objcflags_filter=$_flags_filter
4751 add_objcflags $_flags $_cflags
4752 set_ccvars OBJC
4753
4754 probe_cc ld "$ld"
4755 ldflags_filter=$_flags_filter
4756 add_ldflags $_flags $_ldflags
4757 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4758 LD_O=${_ld_o-$LD_O}
4759 LD_LIB=${_ld_lib-$LD_LIB}
4760 LD_PATH=${_ld_path-$LD_PATH}
4761
4762 probe_cc hostld "$host_ld"
4763 host_ldflags_filter=$_flags_filter
4764 add_host_ldflags $_flags $_ldflags
4765 HOSTLD_O=${_ld_o-$HOSTLD_O}
4766
4767 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4768     probe_cc depcc "$dep_cc"
4769     CCDEP=${_DEPCMD:-$DEPCMD}
4770     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4771     DEPCCFLAGS=$_flags
4772 fi
4773
4774 if $ar 2>&1 | grep -q Microsoft; then
4775     arflags="-nologo"
4776     ar_o='-out:$@'
4777 elif $ar 2>&1 | grep -q "\[D\] "; then
4778     arflags="rcD"
4779     ar_o='$@'
4780 else
4781     arflags="rc"
4782     ar_o='$@'
4783 fi
4784
4785 add_cflags $extra_cflags
4786 add_cxxflags $extra_cxxflags
4787 add_objcflags $extra_objcflags
4788 add_asflags $extra_cflags
4789
4790 if test -n "$sysroot"; then
4791     case "$cc_type" in
4792         gcc|llvm_gcc|clang)
4793             add_cppflags --sysroot="$sysroot"
4794             add_ldflags --sysroot="$sysroot"
4795         ;;
4796     esac
4797 fi
4798
4799 if test "$cpu" = host; then
4800     enabled cross_compile &&
4801         warn "--cpu=host makes no sense when cross-compiling."
4802
4803     case "$cc_type" in
4804         gcc|llvm_gcc)
4805             check_native(){
4806                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4807                 sed -n "/cc1.*$1=/{
4808                             s/.*$1=\\([^ ]*\\).*/\\1/
4809                             p
4810                             q
4811                         }" $TMPE
4812             }
4813             cpu=$(check_native -march || check_native -mcpu)
4814         ;;
4815         clang)
4816             check_native(){
4817                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4818                 sed -n "/cc1.*-target-cpu /{
4819                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4820                             p
4821                             q
4822                         }" $TMPE
4823             }
4824             cpu=$(check_native -march)
4825         ;;
4826     esac
4827
4828     test "${cpu:-host}" = host &&
4829         die "--cpu=host not supported with compiler $cc"
4830 fi
4831
4832 # Deal with common $arch aliases
4833 case "$arch" in
4834     aarch64|arm64)
4835         arch="aarch64"
4836     ;;
4837     arm*|iPad*|iPhone*)
4838         arch="arm"
4839     ;;
4840     mips*|IP*)
4841         case "$arch" in
4842         *el)
4843             add_cppflags -EL
4844             add_ldflags -EL
4845         ;;
4846         *eb)
4847             add_cppflags -EB
4848             add_ldflags -EB
4849         ;;
4850         esac
4851         arch="mips"
4852     ;;
4853     parisc*|hppa*)
4854         arch="parisc"
4855     ;;
4856     "Power Macintosh"|ppc*|powerpc*)
4857         arch="ppc"
4858     ;;
4859     s390|s390x)
4860         arch="s390"
4861     ;;
4862     sh4|sh)
4863         arch="sh4"
4864     ;;
4865     sun4*|sparc*)
4866         arch="sparc"
4867     ;;
4868     tilegx|tile-gx)
4869         arch="tilegx"
4870     ;;
4871     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4872         arch="x86"
4873     ;;
4874 esac
4875
4876 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4877 enable $arch
4878
4879 # Add processor-specific flags
4880 if enabled aarch64; then
4881
4882     case $cpu in
4883         armv*)
4884             cpuflags="-march=$cpu"
4885         ;;
4886         *)
4887             cpuflags="-mcpu=$cpu"
4888         ;;
4889     esac
4890
4891 elif enabled alpha; then
4892
4893     cpuflags="-mcpu=$cpu"
4894
4895 elif enabled arm; then
4896
4897     check_arm_arch() {
4898         test_cpp_condition stddef.h \
4899             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4900             $cpuflags
4901     }
4902
4903     probe_arm_arch() {
4904         if   check_arm_arch 4;        then echo armv4
4905         elif check_arm_arch 4T;       then echo armv4t
4906         elif check_arm_arch 5;        then echo armv5
4907         elif check_arm_arch 5E;       then echo armv5e
4908         elif check_arm_arch 5T;       then echo armv5t
4909         elif check_arm_arch 5TE;      then echo armv5te
4910         elif check_arm_arch 5TEJ;     then echo armv5te
4911         elif check_arm_arch 6;        then echo armv6
4912         elif check_arm_arch 6J;       then echo armv6j
4913         elif check_arm_arch 6K;       then echo armv6k
4914         elif check_arm_arch 6Z;       then echo armv6z
4915         elif check_arm_arch 6KZ;      then echo armv6zk
4916         elif check_arm_arch 6ZK;      then echo armv6zk
4917         elif check_arm_arch 6T2;      then echo armv6t2
4918         elif check_arm_arch 7;        then echo armv7
4919         elif check_arm_arch 7A  7_A;  then echo armv7-a
4920         elif check_arm_arch 7S;       then echo armv7-a
4921         elif check_arm_arch 7R  7_R;  then echo armv7-r
4922         elif check_arm_arch 7M  7_M;  then echo armv7-m
4923         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4924         elif check_arm_arch 8A  8_A;  then echo armv8-a
4925         fi
4926     }
4927
4928     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4929
4930     case $cpu in
4931         armv*)
4932             cpuflags="-march=$cpu"
4933             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4934         ;;
4935         *)
4936             cpuflags="-mcpu=$cpu"
4937             case $cpu in
4938                 cortex-a*)                               subarch=armv7a  ;;
4939                 cortex-r*)                               subarch=armv7r  ;;
4940                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4941                 arm11*)                                  subarch=armv6   ;;
4942                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4943                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4944                 *)                             subarch=$(probe_arm_arch) ;;
4945             esac
4946         ;;
4947     esac
4948
4949     case "$subarch" in
4950         armv5t*)    enable fast_clz                ;;
4951         armv[6-8]*)
4952             enable fast_clz
4953             disabled fast_unaligned || enable fast_unaligned
4954             ;;
4955     esac
4956
4957 elif enabled avr32; then
4958
4959     case $cpu in
4960         ap7[02]0[0-2])
4961             subarch="avr32_ap"
4962             cpuflags="-mpart=$cpu"
4963         ;;
4964         ap)
4965             subarch="avr32_ap"
4966             cpuflags="-march=$cpu"
4967         ;;
4968         uc3[ab]*)
4969             subarch="avr32_uc"
4970             cpuflags="-mcpu=$cpu"
4971         ;;
4972         uc)
4973             subarch="avr32_uc"
4974             cpuflags="-march=$cpu"
4975         ;;
4976     esac
4977
4978 elif enabled bfin; then
4979
4980     cpuflags="-mcpu=$cpu"
4981
4982 elif enabled mips; then
4983
4984     cpuflags="-march=$cpu"
4985
4986     if [ "$cpu" != "generic" ]; then
4987         disable mips32r2
4988         disable mips32r5
4989         disable mips64r2
4990         disable mips32r6
4991         disable mips64r6
4992         disable loongson2
4993         disable loongson3
4994
4995         case $cpu in
4996             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4997                 enable mips32r2
4998                 disable msa
4999             ;;
5000             p5600|i6400|p6600)
5001                 disable mipsdsp
5002                 disable mipsdspr2
5003             ;;
5004             loongson*)
5005                 enable loongson2
5006                 enable loongson3
5007                 enable local_aligned
5008                 enable simd_align_16
5009                 enable fast_64bit
5010                 enable fast_clz
5011                 enable fast_cmov
5012                 enable fast_unaligned
5013                 disable aligned_stack
5014                 disable mipsdsp
5015                 disable mipsdspr2
5016                 # When gcc version less than 5.3.0, add -fno-expensive-optimizations flag.
5017                 if [ $cc == gcc ]; then
5018                     gcc_version=$(gcc -dumpversion)
5019                     if [ "$(echo "$gcc_version 5.3.0" | tr " " "\n" | sort -rV | head -n 1)" == "$gcc_version" ]; then
5020                         expensive_optimization_flag=""
5021                     else
5022                         expensive_optimization_flag="-fno-expensive-optimizations"
5023                     fi
5024                 fi
5025                 case $cpu in
5026                     loongson3*)
5027                         cpuflags="-march=loongson3a -mhard-float $expensive_optimization_flag"
5028                     ;;
5029                     loongson2e)
5030                         cpuflags="-march=loongson2e -mhard-float $expensive_optimization_flag"
5031                     ;;
5032                     loongson2f)
5033                         cpuflags="-march=loongson2f -mhard-float $expensive_optimization_flag"
5034                     ;;
5035                 esac
5036             ;;
5037             *)
5038                 # Unknown CPU. Disable everything.
5039                 warn "unknown CPU. Disabling all MIPS optimizations."
5040                 disable mipsfpu
5041                 disable mipsdsp
5042                 disable mipsdspr2
5043                 disable msa
5044                 disable mmi
5045             ;;
5046         esac
5047
5048         case $cpu in
5049             24kc)
5050                 disable mipsfpu
5051                 disable mipsdsp
5052                 disable mipsdspr2
5053             ;;
5054             24kf*)
5055                 disable mipsdsp
5056                 disable mipsdspr2
5057             ;;
5058             24kec|34kc|1004kc)
5059                 disable mipsfpu
5060                 disable mipsdspr2
5061             ;;
5062             24kef*|34kf*|1004kf*)
5063                 disable mipsdspr2
5064             ;;
5065             74kc)
5066                 disable mipsfpu
5067             ;;
5068             p5600)
5069                 enable mips32r5
5070                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
5071             ;;
5072             i6400)
5073                 enable mips64r6
5074                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
5075             ;;
5076             p6600)
5077                 enable mips64r6
5078                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
5079             ;;
5080         esac
5081     else
5082         # We do not disable anything. Is up to the user to disable the unwanted features.
5083         warn 'generic cpu selected'
5084     fi
5085
5086 elif enabled ppc; then
5087
5088     disable ldbrx
5089
5090     case $(tolower $cpu) in
5091         601|ppc601|powerpc601)
5092             cpuflags="-mcpu=601"
5093             disable altivec
5094         ;;
5095         603*|ppc603*|powerpc603*)
5096             cpuflags="-mcpu=603"
5097             disable altivec
5098         ;;
5099         604*|ppc604*|powerpc604*)
5100             cpuflags="-mcpu=604"
5101             disable altivec
5102         ;;
5103         g3|75*|ppc75*|powerpc75*)
5104             cpuflags="-mcpu=750"
5105             disable altivec
5106         ;;
5107         g4|745*|ppc745*|powerpc745*)
5108             cpuflags="-mcpu=7450"
5109             disable vsx
5110         ;;
5111         74*|ppc74*|powerpc74*)
5112             cpuflags="-mcpu=7400"
5113             disable vsx
5114         ;;
5115         g5|970|ppc970|powerpc970)
5116             cpuflags="-mcpu=970"
5117             disable vsx
5118         ;;
5119         power[3-6]*)
5120             cpuflags="-mcpu=$cpu"
5121             disable vsx
5122         ;;
5123         power[7-8]*)
5124             cpuflags="-mcpu=$cpu"
5125         ;;
5126         cell)
5127             cpuflags="-mcpu=cell"
5128             enable ldbrx
5129             disable vsx
5130         ;;
5131         e500mc)
5132             cpuflags="-mcpu=e500mc"
5133             disable altivec
5134         ;;
5135         e500v2)
5136             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
5137             disable altivec
5138             disable dcbzl
5139         ;;
5140         e500)
5141             cpuflags="-mcpu=8540 -mhard-float"
5142             disable altivec
5143             disable dcbzl
5144         ;;
5145     esac
5146
5147 elif enabled sparc; then
5148
5149     case $cpu in
5150         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
5151             cpuflags="-mcpu=$cpu"
5152         ;;
5153         ultrasparc*|niagara[234])
5154             cpuflags="-mcpu=$cpu"
5155         ;;
5156     esac
5157
5158 elif enabled x86; then
5159
5160     case $cpu in
5161         i[345]86|pentium)
5162             cpuflags="-march=$cpu"
5163             disable i686
5164             disable mmx
5165         ;;
5166         # targets that do NOT support nopl and conditional mov (cmov)
5167         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
5168             cpuflags="-march=$cpu"
5169             disable i686
5170         ;;
5171         # targets that do support nopl and conditional mov (cmov)
5172         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
5173         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
5174         |amdfam10|barcelona|b[dt]ver*|znver*)
5175             cpuflags="-march=$cpu"
5176             enable i686
5177             enable fast_cmov
5178         ;;
5179         # targets that do support conditional mov but on which it's slow
5180         pentium4|pentium4m|prescott|nocona)
5181             cpuflags="-march=$cpu"
5182             enable i686
5183             disable fast_cmov
5184         ;;
5185     esac
5186
5187 fi
5188
5189 if [ "$cpu" != generic ]; then
5190     add_cflags  $cpuflags
5191     add_asflags $cpuflags
5192     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
5193 fi
5194
5195 # compiler sanity check
5196 test_exec <<EOF
5197 int main(void){ return 0; }
5198 EOF
5199 if test "$?" != 0; then
5200     echo "$cc is unable to create an executable file."
5201     if test -z "$cross_prefix" && ! enabled cross_compile ; then
5202         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
5203         echo "Only do this if you know what cross compiling means."
5204     fi
5205     die "C compiler test failed."
5206 fi
5207
5208 add_cppflags -D_ISOC99_SOURCE
5209 add_cxxflags -D__STDC_CONSTANT_MACROS
5210 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
5211
5212 # some compilers silently accept -std=c11, so we also need to check that the
5213 # version macro is defined properly
5214 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
5215     add_cflags -std=c11 ||
5216     check_cflags -std=c99
5217
5218 check_cppflags -D_FILE_OFFSET_BITS=64
5219 check_cppflags -D_LARGEFILE_SOURCE
5220
5221 add_host_cppflags -D_ISOC99_SOURCE
5222 check_host_cflags -std=c99
5223 check_host_cflags -Wall
5224 check_host_cflags $host_cflags_speed
5225
5226 check_64bit(){
5227     arch32=$1
5228     arch64=$2
5229     expr=${3:-'sizeof(void *) > 4'}
5230     test_code cc "" "int test[2*($expr) - 1]" &&
5231         subarch=$arch64 || subarch=$arch32
5232     enable $subarch
5233 }
5234
5235 case "$arch" in
5236     aarch64|alpha|ia64)
5237         enabled shared && enable_weak pic
5238     ;;
5239     mips)
5240         check_64bit mips mips64 '_MIPS_SIM > 1'
5241         enabled shared && enable_weak pic
5242     ;;
5243     parisc)
5244         check_64bit parisc parisc64
5245         enabled shared && enable_weak pic
5246     ;;
5247     ppc)
5248         check_64bit ppc ppc64
5249         enabled shared && enable_weak pic
5250     ;;
5251     s390)
5252         check_64bit s390 s390x
5253         enabled shared && enable_weak pic
5254     ;;
5255     sparc)
5256         check_64bit sparc sparc64
5257         enabled shared && enable_weak pic
5258     ;;
5259     x86)
5260         check_64bit x86_32 x86_64
5261         # Treat x32 as x64 for now. Note it also needs pic if shared
5262         test "$subarch" = "x86_32" && test_cpp_condition stddef.h 'defined(__x86_64__)' &&
5263             subarch=x86_64 && enable x86_64 && disable x86_32
5264         if enabled x86_64; then
5265             enabled shared && enable_weak pic
5266             objformat=elf64
5267         fi
5268     ;;
5269 esac
5270
5271 # OS specific
5272 case $target_os in
5273     aix)
5274         SHFLAGS=-shared
5275         add_cppflags '-I\$(SRC_PATH)/compat/aix'
5276         enabled shared && add_ldflags -Wl,-brtl
5277         arflags='-Xany -r -c'
5278         striptype=""
5279         ;;
5280     android)
5281         disable symver
5282         enable section_data_rel_ro
5283         add_cflags -fPIE
5284         add_ldexeflags -fPIE -pie
5285         SLIB_INSTALL_NAME='$(SLIBNAME)'
5286         SLIB_INSTALL_LINKS=
5287         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
5288         ;;
5289     haiku)
5290         prefix_default="/boot/common"
5291         network_extralibs="-lnetwork"
5292         host_extralibs=
5293         ;;
5294     sunos)
5295         SHFLAGS='-shared -Wl,-h,$$(@F)'
5296         enabled x86 && append SHFLAGS -mimpure-text
5297         network_extralibs="-lsocket -lnsl"
5298         add_cppflags -D__EXTENSIONS__
5299         # When using suncc to build, the Solaris linker will mark
5300         # an executable with each instruction set encountered by
5301         # the Solaris assembler.  As our libraries contain their own
5302         # guards for processor-specific code, instead suppress
5303         # generation of the HWCAPS ELF section on Solaris x86 only.
5304         enabled_all suncc x86 &&
5305             echo "hwcap_1 = OVERRIDE;" > mapfile &&
5306             add_ldflags -Wl,-M,mapfile
5307         nm_default='nm -P -g'
5308         striptype=""
5309         version_script='-M'
5310         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
5311         ;;
5312     netbsd)
5313         disable symver
5314         oss_indev_extralibs="-lossaudio"
5315         oss_outdev_extralibs="-lossaudio"
5316         enabled gcc || check_ldflags -Wl,-zmuldefs
5317         ;;
5318     openbsd|bitrig)
5319         disable symver
5320         enable section_data_rel_ro
5321         striptype=""
5322         SHFLAGS='-shared'
5323         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
5324         SLIB_INSTALL_LINKS=
5325         oss_indev_extralibs="-lossaudio"
5326         oss_outdev_extralibs="-lossaudio"
5327         ;;
5328     dragonfly)
5329         disable symver
5330         ;;
5331     freebsd)
5332         ;;
5333     bsd/os)
5334         add_extralibs -lpoll -lgnugetopt
5335         strip="strip -d"
5336         ;;
5337     darwin)
5338         enabled ppc && add_asflags -force_cpusubtype_ALL
5339         install_name_dir_default='$(SHLIBDIR)'
5340         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
5341         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
5342         strip="${strip} -x"
5343         add_ldflags -Wl,-dynamic,-search_paths_first
5344         check_cflags -Werror=partial-availability
5345         SLIBSUF=".dylib"
5346         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
5347         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
5348         enabled x86_64 && objformat="macho64" || objformat="macho32"
5349         enabled_any pic shared x86_64 ||
5350             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
5351         check_headers dispatch/dispatch.h &&
5352             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
5353         if test -n "$sysroot"; then
5354             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
5355             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
5356         fi
5357         version_script='-exported_symbols_list'
5358         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
5359         ;;
5360     msys*)
5361         die "Native MSYS builds are discouraged, please use the MINGW environment."
5362         ;;
5363     mingw32*|mingw64*)
5364         target_os=mingw32
5365         LIBTARGET=i386
5366         if enabled x86_64; then
5367             LIBTARGET="i386:x86-64"
5368         elif enabled arm; then
5369             LIBTARGET="arm"
5370         elif enabled aarch64; then
5371             LIBTARGET="arm64"
5372         fi
5373         if enabled shared; then
5374             # Cannot build both shared and static libs when using dllimport.
5375             disable static
5376         fi
5377         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5378         enabled x86_32 && check_ldflags -Wl,--large-address-aware
5379         shlibdir_default="$bindir_default"
5380         SLIBPREF=""
5381         SLIBSUF=".dll"
5382         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5383         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5384         if test_cmd lib.exe -list; then
5385             SLIB_EXTRA_CMD=-'lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5386             if enabled x86_64; then
5387                 LIBTARGET=x64
5388             fi
5389         else
5390             SLIB_EXTRA_CMD=-'$(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
5391         fi
5392         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5393         SLIB_INSTALL_LINKS=
5394         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5395         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5396         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5397         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--disable-auto-image-base $$(@:$(SLIBSUF)=.def)'
5398         enabled x86_64 && objformat="win64" || objformat="win32"
5399         dlltool="${cross_prefix}dlltool"
5400         ranlib=:
5401         enable dos_paths
5402         check_ldflags -Wl,--nxcompat,--dynamicbase
5403         # Lets work around some stupidity in binutils.
5404         # ld will strip relocations from executables even though we need them
5405         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
5406         # however ld then forgets what the entry point should be (oops) so we
5407         # have to manually (re)set it.
5408         if enabled x86_32; then
5409             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
5410         elif enabled x86_64; then
5411             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
5412             check_ldflags -Wl,--high-entropy-va # binutils 2.25
5413             # Set image base >4GB for extra entropy with HEASLR
5414             add_ldexeflags -Wl,--image-base,0x140000000
5415             append SHFLAGS -Wl,--image-base,0x180000000
5416         fi
5417         ;;
5418     win32|win64)
5419         disable symver
5420         if enabled shared; then
5421             # Link to the import library instead of the normal static library
5422             # for shared libs.
5423             LD_LIB='%.lib'
5424             # Cannot build both shared and static libs with MSVC or icl.
5425             disable static
5426         fi
5427         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
5428         shlibdir_default="$bindir_default"
5429         SLIBPREF=""
5430         SLIBSUF=".dll"
5431         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5432         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5433         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5434         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5435         SLIB_INSTALL_LINKS=
5436         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5437         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5438         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5439         enabled x86_64 && objformat="win64" || objformat="win32"
5440         ranlib=:
5441         enable dos_paths
5442         ;;
5443     cygwin*)
5444         target_os=cygwin
5445         shlibdir_default="$bindir_default"
5446         SLIBPREF="cyg"
5447         SLIBSUF=".dll"
5448         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5449         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5450         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5451         SLIB_INSTALL_LINKS=
5452         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5453         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5454         enabled x86_64 && objformat="win64" || objformat="win32"
5455         enable dos_paths
5456         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5457         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5458         ;;
5459     *-dos|freedos|opendos)
5460         network_extralibs="-lsocket"
5461         objformat="coff"
5462         enable dos_paths
5463         ;;
5464     linux)
5465         enable section_data_rel_ro
5466         enabled_any arm aarch64 && enable_weak linux_perf
5467         ;;
5468     irix*)
5469         target_os=irix
5470         ranlib="echo ignoring ranlib"
5471         ;;
5472     os/2*)
5473         strip="lxlite -CS"
5474         striptype=""
5475         objformat="aout"
5476         add_cppflags -D_GNU_SOURCE
5477         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5478         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5479         LIBSUF="_s.a"
5480         SLIBPREF=""
5481         SLIBSUF=".dll"
5482         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5483         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5484         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5485             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5486             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5487             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5488             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5489         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5490             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5491         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5492         SLIB_INSTALL_LINKS=
5493         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5494         enable dos_paths
5495         enable_weak os2threads
5496         ;;
5497     gnu/kfreebsd)
5498         add_cppflags -D_BSD_SOURCE
5499         ;;
5500     gnu)
5501         ;;
5502     qnx)
5503         add_cppflags -D_QNX_SOURCE
5504         network_extralibs="-lsocket"
5505         ;;
5506     symbian)
5507         SLIBSUF=".dll"
5508         enable dos_paths
5509         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5510         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5511         add_ldflags -Wl,--target1-abs,--no-undefined \
5512                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5513                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5514         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5515                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5516                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5517         ;;
5518     minix)
5519         ;;
5520     none)
5521         ;;
5522     *)
5523         die "Unknown OS '$target_os'."
5524         ;;
5525 esac
5526
5527 # test if creating links works
5528 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5529 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5530 mkdir "$link_dest"
5531 $ln_s "$link_dest" "$link_name"
5532 touch "$link_dest/test_file"
5533 if [ "$source_path" != "." ] && [ "$source_path" != "src" ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5534     # create link to source path
5535     [ -e src ] && rm src
5536     $ln_s "$source_path" src
5537     source_link=src
5538 else
5539     # creating directory links doesn't work
5540     # fall back to using the full source path
5541     source_link="$source_path"
5542 fi
5543 # cleanup
5544 rm -r "$link_dest"
5545 rm -r "$link_name"
5546
5547 # determine libc flavour
5548
5549 probe_libc(){
5550     pfx=$1
5551     pfx_no_=${pfx%_}
5552     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5553     if test_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5554         eval ${pfx}libc_type=uclibc
5555         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5556     elif test_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5557         eval ${pfx}libc_type=glibc
5558         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5559     # MinGW headers can be installed on Cygwin, so check for newlib first.
5560     elif test_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5561         eval ${pfx}libc_type=newlib
5562         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5563     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5564     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5565         eval ${pfx}libc_type=mingw64
5566         if test_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5567             add_compat msvcrt/snprintf.o
5568             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5569         fi
5570         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5571         eval test \$${pfx_no_}cc_type = "gcc" &&
5572             add_${pfx}cppflags -D__printf__=__gnu_printf__
5573         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5574             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5575         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5576     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5577          test_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5578         eval ${pfx}libc_type=mingw32
5579         test_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5580             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5581             die "ERROR: MinGW32 runtime version must be >= 3.15."
5582         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5583         test_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5584             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5585         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5586             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5587         eval test \$${pfx_no_}cc_type = "gcc" &&
5588             add_${pfx}cppflags -D__printf__=__gnu_printf__
5589         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5590     elif test_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5591         eval ${pfx}libc_type=msvcrt
5592         if test_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5593             if [ "$pfx" = host_ ]; then
5594                 add_host_cppflags -Dsnprintf=_snprintf
5595             else
5596                 add_compat strtod.o strtod=avpriv_strtod
5597                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5598                                              _snprintf=avpriv_snprintf  \
5599                                              vsnprintf=avpriv_vsnprintf
5600             fi
5601         fi
5602         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5603         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5604         # 0x601 by default unless something else is set by the user.
5605         # This can easily lead to us detecting functions only present
5606         # in such new versions and producing binaries requiring windows 7.0.
5607         # Therefore explicitly set the default to Vista unless the user has
5608         # set something else on the command line.
5609         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5610         # family. For these cases, configure is free to use any functions
5611         # found in the SDK headers by default. (Alternatively, we could force
5612         # _WIN32_WINNT to 0x0602 in that case.)
5613         test_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5614             { test_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0600; }
5615 #ifdef WINAPI_FAMILY
5616 #include <winapifamily.h>
5617 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5618 #error not desktop
5619 #endif
5620 #endif
5621 EOF
5622         if [ "$pfx" = "" ]; then
5623             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5624             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5625         fi
5626     elif test_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5627         eval ${pfx}libc_type=klibc
5628     elif test_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5629         eval ${pfx}libc_type=bionic
5630     elif test_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5631         eval ${pfx}libc_type=solaris
5632         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5633     elif test_${pfx}cpp_condition sys/version.h "defined __DJGPP__"; then
5634         eval ${pfx}libc_type=djgpp
5635         add_cppflags -U__STRICT_ANSI__
5636         add_cflags "-include $source_path/compat/djgpp/math.h"
5637         add_compat djgpp/math.o
5638     fi
5639     test_${pfx}cc <<EOF
5640 #include <time.h>
5641 void *v = localtime_r;
5642 EOF
5643 test "$?" != 0 && test_${pfx}cc -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 <<EOF && add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5644 #include <time.h>
5645 void *v = localtime_r;
5646 EOF
5647
5648     eval test -n "\${${pfx}libc_type}" && enable ${pfx}libc_${libc_type}
5649 }
5650
5651 probe_libc
5652 probe_libc host_
5653
5654 # hacks for compiler/libc/os combinations
5655
5656 case $libc_type in
5657     bionic)
5658         add_compat strtod.o strtod=avpriv_strtod
5659         ;;
5660 esac
5661
5662 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5663     add_cppflags '-I\$(SRC_PATH)/compat/float'
5664
5665 test_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5666
5667 set_default libdir
5668 : ${shlibdir_default:="$libdir"}
5669 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5670
5671 set_default $PATHS_LIST
5672 set_default nm
5673
5674 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5675
5676 enable_weak_pic() {
5677     disabled pic && return
5678     enable pic
5679     add_cppflags -DPIC
5680     case "$target_os" in
5681     mingw*|cygwin*|win*)
5682         ;;
5683     *)
5684         add_cflags -fPIC
5685         add_asflags -fPIC
5686         ;;
5687     esac
5688 }
5689
5690 enabled pic && enable_weak_pic
5691
5692 test_cc <<EOF || die "Symbol mangling check failed."
5693 int ff_extern;
5694 EOF
5695 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5696 extern_prefix=${sym%%ff_extern*}
5697
5698 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
5699
5700 for restrict_keyword in restrict __restrict__ __restrict ""; do
5701     test_code cc "" "char * $restrict_keyword p" && break
5702 done
5703
5704 check_cc pragma_deprecated "" '_Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"")'
5705
5706 # The global variable ensures the bits appear unchanged in the object file.
5707 test_cc <<EOF || die "endian test failed"
5708 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5709 EOF
5710 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5711
5712 check_cc const_nan math.h "struct { double d; } static const bar[] = { { NAN } }"
5713
5714 if ! enabled ppc64 || enabled bigendian; then
5715     disable vsx
5716 fi
5717
5718 check_gas() {
5719     log "check_gas using '$as' as AS"
5720     # :vararg is used on aarch64, arm and ppc altivec
5721     check_as vararg "
5722 .macro m n, y:vararg=0
5723 \n: .int \y
5724 .endm
5725 m x" || return 1
5726     # .altmacro is only used in arm asm
5727     ! enabled arm || check_as gnu_as ".altmacro"
5728 }
5729
5730 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5731     nogas=:
5732     enabled_any arm aarch64 && nogas=die
5733     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5734     as_noop=-v
5735
5736     case $as_type in
5737         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5738         gcc)  gaspp_as_type=gas ;;
5739         *)    gaspp_as_type=$as_type ;;
5740     esac
5741
5742     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5743
5744     test "${as#*gas-preprocessor.pl}" != "$as" ||
5745     test_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5746         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5747
5748     if ! check_gas ; then
5749         as=${gas:=$as}
5750         check_gas || \
5751             $nogas "GNU assembler not found, install/update gas-preprocessor"
5752     fi
5753
5754     check_as as_func ".func test
5755                       .endfunc"
5756 fi
5757
5758 check_inline_asm inline_asm_labels '"1:\n"'
5759
5760 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5761
5762 if enabled aarch64; then
5763     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5764     # internal assembler in clang 3.3 does not support this instruction
5765     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5766     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5767
5768     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5769
5770 elif enabled alpha; then
5771
5772     check_cflags -mieee
5773
5774 elif enabled arm; then
5775
5776     enabled msvc && check_cpp_condition thumb stddef.h "defined _M_ARMT"
5777     test_cpp_condition stddef.h "defined __thumb__" && test_cc <<EOF && enable_weak thumb
5778 float func(float a, float b){ return a+b; }
5779 EOF
5780     enabled thumb && check_cflags -mthumb || check_cflags -marm
5781
5782     if check_cpp_condition vfp_args stddef.h "defined __ARM_PCS_VFP"; then
5783         :
5784     elif check_cpp_condition vfp_args stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5785         :
5786     elif ! test_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5787         case "${cross_prefix:-$cc}" in
5788             *hardfloat*) enable vfp_args; fpabi=vfp ;;
5789             *) check_ld "cc" vfp_args <<EOF && fpabi=vfp || fpabi=soft ;;
5790 __asm__ (".eabi_attribute 28, 1");
5791 int main(void) { return 0; }
5792 EOF
5793         esac
5794         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5795     fi
5796
5797     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5798     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5799     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5800     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5801     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5802     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5803     enabled setend  && check_insn setend  'setend be'
5804
5805     [ $target_os = linux ] || [ $target_os = android ] ||
5806         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5807             $ARCH_EXT_LIST_ARM
5808
5809     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5810
5811     check_as as_arch_directive ".arch armv7-a"
5812     check_as as_dn_directive   "ra .dn d0.i16"
5813     check_as as_fpu_directive  ".fpu neon"
5814
5815     # llvm's integrated assembler supports .object_arch from llvm 3.5
5816     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5817         check_as as_object_arch ".object_arch armv4"
5818
5819     # MS armasm fails to assemble our PIC constructs
5820     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5821
5822 elif enabled mips; then
5823
5824     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5825     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5826     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5827
5828     # Enable minimum ISA based on selected options
5829     if enabled mips64; then
5830         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5831         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5832         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5833     else
5834         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5835         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5836         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5837         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5838     fi
5839
5840     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5841     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5842     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_headers msa.h || disable msa
5843     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5844     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5845     enabled msa && enabled msa2 && check_inline_asm_flags msa2 '"nxbits.any.b $w0, $w0"' '-mmsa2' && check_headers msa2.h || disable msa2
5846
5847     if enabled bigendian && enabled msa; then
5848         disable msa
5849     fi
5850
5851 elif enabled parisc; then
5852
5853     if enabled gcc; then
5854         case $($cc -dumpversion) in
5855             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5856         esac
5857     fi
5858
5859 elif enabled ppc; then
5860
5861     enable local_aligned
5862
5863     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5864     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5865     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5866     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5867
5868     if enabled altivec; then
5869         check_cflags -maltivec -mabi=altivec
5870
5871         # check if our compiler supports Motorola AltiVec C API
5872         check_cc altivec altivec.h "vector signed int v1 = (vector signed int) { 0 };
5873                                     vector signed int v2 = (vector signed int) { 1 };
5874                                     v1 = vec_add(v1, v2);"
5875
5876         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5877     fi
5878
5879     if enabled vsx; then
5880         check_cflags -mvsx &&
5881         check_cc vsx altivec.h "int v[4] = { 0 };
5882                                 vector signed int v1 = vec_vsx_ld(0, v);"
5883     fi
5884
5885     if enabled power8; then
5886         check_cpp_condition power8 "altivec.h" "defined(_ARCH_PWR8)"
5887     fi
5888
5889 elif enabled x86; then
5890
5891     check_builtin rdtsc    intrin.h   "__rdtsc()"
5892     check_builtin mm_empty mmintrin.h "_mm_empty()"
5893
5894     enable local_aligned
5895
5896     # check whether EBP is available on x86
5897     # As 'i' is stored on the stack, this program will crash
5898     # if the base pointer is used to access it because the
5899     # base pointer is cleared in the inline assembly code.
5900     check_exec_crash <<EOF && enable ebp_available
5901 volatile int i=0;
5902 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5903 return i;
5904 EOF
5905
5906     # check whether EBX is available on x86
5907     check_inline_asm ebx_available '""::"b"(0)' &&
5908         check_inline_asm ebx_available '"":::"%ebx"'
5909
5910     # check whether xmm clobbers are supported
5911     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5912
5913     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5914         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5915
5916     # check whether binutils is new enough to compile SSSE3/MMXEXT
5917     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5918     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5919
5920     probe_x86asm(){
5921         x86asmexe_probe=$1
5922         if test_cmd $x86asmexe_probe -v; then
5923             x86asmexe=$x86asmexe_probe
5924             x86asm_type=nasm
5925             x86asm_debug="-g -F dwarf"
5926             X86ASMDEP=
5927             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5928         elif test_cmd $x86asmexe_probe --version; then
5929             x86asmexe=$x86asmexe_probe
5930             x86asm_type=yasm
5931             x86asm_debug="-g dwarf2"
5932             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
5933             X86ASM_DEPFLAGS=
5934         fi
5935         check_x86asm x86asm "movbe ecx, [5]"
5936     }
5937
5938     if ! disabled_any asm mmx x86asm; then
5939         disable x86asm
5940         for program in $x86asmexe nasm yasm; do
5941             probe_x86asm $program && break
5942         done
5943         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
5944         X86ASMFLAGS="-f $objformat"
5945         enabled pic               && append X86ASMFLAGS "-DPIC"
5946         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
5947         case "$objformat" in
5948             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
5949         esac
5950
5951         enabled avx512 && check_x86asm avx512_external "vmovdqa32 [eax]{k1}{z}, zmm0"
5952         enabled avx2   && check_x86asm avx2_external   "vextracti128 xmm0, ymm0, 0"
5953         enabled xop    && check_x86asm xop_external    "vpmacsdd xmm0, xmm1, xmm2, xmm3"
5954         enabled fma4   && check_x86asm fma4_external   "vfmaddps ymm0, ymm1, ymm2, ymm3"
5955         check_x86asm cpunop          "CPU amdnop"
5956     fi
5957
5958     case "$cpu" in
5959         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5960             disable fast_clz
5961         ;;
5962     esac
5963
5964 fi
5965
5966 check_cc intrinsics_neon arm_neon.h "int16x8_t test = vdupq_n_s16(0)"
5967
5968 check_ldflags -Wl,--as-needed
5969 check_ldflags -Wl,-z,noexecstack
5970
5971 if ! disabled network; then
5972     check_func getaddrinfo $network_extralibs
5973     check_func inet_aton $network_extralibs
5974
5975     check_type netdb.h "struct addrinfo"
5976     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5977     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5978     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5979     check_type poll.h "struct pollfd"
5980     check_type netinet/sctp.h "struct sctp_event_subscribe"
5981     check_struct "sys/socket.h" "struct msghdr" msg_flags
5982     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5983     check_type netinet/in.h "struct sockaddr_in6"
5984     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5985     check_type "sys/types.h sys/socket.h" socklen_t
5986
5987     # Prefer arpa/inet.h over winsock2
5988     if check_headers arpa/inet.h ; then
5989         check_func closesocket
5990     elif check_headers winsock2.h ; then
5991         check_func_headers winsock2.h closesocket -lws2 &&
5992             network_extralibs="-lws2" ||
5993         { check_func_headers winsock2.h closesocket -lws2_32 &&
5994             network_extralibs="-lws2_32"; } || disable winsock2_h network
5995         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5996
5997         check_type ws2tcpip.h socklen_t
5998         check_type ws2tcpip.h "struct addrinfo"
5999         check_type ws2tcpip.h "struct group_source_req"
6000         check_type ws2tcpip.h "struct ip_mreq_source"
6001         check_type ws2tcpip.h "struct ipv6_mreq"
6002         check_type winsock2.h "struct pollfd"
6003         check_struct winsock2.h "struct sockaddr" sa_len
6004         check_type ws2tcpip.h "struct sockaddr_in6"
6005         check_type ws2tcpip.h "struct sockaddr_storage"
6006     else
6007         disable network
6008     fi
6009 fi
6010
6011 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
6012 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
6013 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
6014 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
6015 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
6016 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
6017 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
6018
6019 case "$custom_allocator" in
6020     jemalloc)
6021         # jemalloc by default does not use a prefix
6022         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
6023     ;;
6024     tcmalloc)
6025         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
6026         malloc_prefix=tc_
6027     ;;
6028 esac
6029
6030 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
6031 check_func  ${malloc_prefix}memalign            && enable memalign
6032 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
6033
6034 check_func  access
6035 check_func_headers stdlib.h arc4random
6036 check_lib   clock_gettime time.h clock_gettime || check_lib clock_gettime time.h clock_gettime -lrt
6037 check_func  fcntl
6038 check_func  fork
6039 check_func  gethrtime
6040 check_func  getopt
6041 check_func  getrusage
6042 check_func  gettimeofday
6043 check_func  isatty
6044 check_func  mkstemp
6045 check_func  mmap
6046 check_func  mprotect
6047 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
6048 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
6049 check_func  sched_getaffinity
6050 check_func  setrlimit
6051 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
6052 check_func  strerror_r
6053 check_func  sysconf
6054 check_func  sysctl
6055 check_func  usleep
6056
6057 check_func_headers conio.h kbhit
6058 check_func_headers io.h setmode
6059 check_func_headers lzo/lzo1x.h lzo1x_999_compress
6060 check_func_headers mach/mach_time.h mach_absolute_time
6061 check_func_headers stdlib.h getenv
6062 check_func_headers sys/stat.h lstat
6063
6064 check_func_headers windows.h GetModuleHandle
6065 check_func_headers windows.h GetProcessAffinityMask
6066 check_func_headers windows.h GetProcessTimes
6067 check_func_headers windows.h GetStdHandle
6068 check_func_headers windows.h GetSystemTimeAsFileTime
6069 check_func_headers windows.h LoadLibrary
6070 check_func_headers windows.h MapViewOfFile
6071 check_func_headers windows.h PeekNamedPipe
6072 check_func_headers windows.h SetConsoleTextAttribute
6073 check_func_headers windows.h SetConsoleCtrlHandler
6074 check_func_headers windows.h SetDllDirectory
6075 check_func_headers windows.h Sleep
6076 check_func_headers windows.h VirtualAlloc
6077 check_func_headers glob.h glob
6078 enabled xlib &&
6079     check_lib xlib "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
6080
6081 check_headers direct.h
6082 check_headers dirent.h
6083 check_headers dxgidebug.h
6084 check_headers dxva.h
6085 check_headers dxva2api.h -D_WIN32_WINNT=0x0600
6086 check_headers io.h
6087 check_headers linux/perf_event.h
6088 check_headers libcrystalhd/libcrystalhd_if.h
6089 check_headers malloc.h
6090 check_headers net/udplite.h
6091 check_headers poll.h
6092 check_headers sys/param.h
6093 check_headers sys/resource.h
6094 check_headers sys/select.h
6095 check_headers sys/time.h
6096 check_headers sys/un.h
6097 check_headers termios.h
6098 check_headers unistd.h
6099 check_headers valgrind/valgrind.h
6100 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
6101 check_headers windows.h
6102 check_headers X11/extensions/XvMClib.h
6103 check_headers asm/types.h
6104
6105 # it seems there are versions of clang in some distros that try to use the
6106 # gcc headers, which explodes for stdatomic
6107 # so we also check that atomics actually work here
6108 check_builtin stdatomic stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0); foo += bar"
6109
6110 check_lib advapi32 "windows.h"            RegCloseKey          -ladvapi32
6111 check_lib bcrypt   "windows.h bcrypt.h"   BCryptGenRandom      -lbcrypt &&
6112     check_cpp_condition bcrypt bcrypt.h "defined BCRYPT_RNG_ALGORITHM"
6113 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
6114 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
6115 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
6116
6117 check_lib android android/native_window.h ANativeWindow_acquire -landroid
6118 check_lib mediandk "stdint.h media/NdkImage.h" AImage_delete -lmediandk
6119 check_lib camera2ndk "stdbool.h stdint.h camera/NdkCameraManager.h" ACameraManager_create -lcamera2ndk
6120
6121 enabled appkit       && check_apple_framework AppKit
6122 enabled audiotoolbox && check_apple_framework AudioToolbox
6123 enabled avfoundation && check_apple_framework AVFoundation
6124 enabled coreimage    && check_apple_framework CoreImage
6125 enabled videotoolbox && check_apple_framework VideoToolbox
6126
6127 check_apple_framework CoreFoundation
6128 check_apple_framework CoreMedia
6129 check_apple_framework CoreVideo
6130
6131 enabled avfoundation && {
6132     disable coregraphics applicationservices
6133     check_lib coregraphics        CoreGraphics/CoreGraphics.h               CGGetActiveDisplayList "-framework CoreGraphics" ||
6134     check_lib applicationservices ApplicationServices/ApplicationServices.h CGGetActiveDisplayList "-framework ApplicationServices"; }
6135
6136 enabled videotoolbox && {
6137     check_lib coreservices CoreServices/CoreServices.h UTGetOSTypeFromString "-framework CoreServices"
6138     check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_HEVC "-framework CoreMedia"
6139     check_func_headers CoreVideo/CVPixelBuffer.h kCVPixelFormatType_420YpCbCr10BiPlanarVideoRange "-framework CoreVideo"
6140     check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferTransferFunction_SMPTE_ST_2084_PQ "-framework CoreVideo"
6141     check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferTransferFunction_ITU_R_2100_HLG "-framework CoreVideo"
6142     check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferTransferFunction_Linear "-framework CoreVideo"
6143 }
6144
6145 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
6146
6147 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
6148 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
6149 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
6150 check_type "windows.h d3d11.h" "ID3D11VideoContext"
6151 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
6152
6153 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
6154 check_type "vdpau/vdpau.h" "VdpPictureInfoVP9"
6155
6156 if [ -z "$nvccflags" ]; then
6157     nvccflags=$nvccflags_default
6158 fi
6159
6160 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6161     nvccflags="$nvccflags -m64"
6162 else
6163     nvccflags="$nvccflags -m32"
6164 fi
6165
6166 if enabled cuda_nvcc; then
6167     nvccflags="$nvccflags -ptx"
6168 else
6169     nvccflags="$nvccflags -S -nocudalib -nocudainc --cuda-device-only -include ${source_link}/compat/cuda/cuda_runtime.h"
6170     check_nvcc cuda_llvm
6171 fi
6172
6173 if ! disabled ffnvcodec; then
6174     ffnv_hdr_list="ffnvcodec/nvEncodeAPI.h ffnvcodec/dynlink_cuda.h ffnvcodec/dynlink_cuviddec.h ffnvcodec/dynlink_nvcuvid.h"
6175     check_pkg_config ffnvcodec "ffnvcodec >= 9.1.23.1" "$ffnv_hdr_list" "" || \
6176       check_pkg_config ffnvcodec "ffnvcodec >= 9.0.18.3 ffnvcodec < 9.1" "$ffnv_hdr_list" "" || \
6177       check_pkg_config ffnvcodec "ffnvcodec >= 8.2.15.10 ffnvcodec < 8.3" "$ffnv_hdr_list" "" || \
6178       check_pkg_config ffnvcodec "ffnvcodec >= 8.1.24.11 ffnvcodec < 8.2" "$ffnv_hdr_list" ""
6179 fi
6180
6181 check_cpp_condition winrt windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)"
6182
6183 if ! disabled w32threads && ! enabled pthreads; then
6184     check_func_headers "windows.h process.h" _beginthreadex &&
6185         check_type "windows.h" CONDITION_VARIABLE &&
6186         check_type "windows.h" INIT_ONCE &&
6187         enable w32threads || disable w32threads
6188     if ! enabled w32threads && enabled winrt; then
6189         check_func_headers "windows.h" CreateThread &&
6190             enable w32threads || disable w32threads
6191     fi
6192 fi
6193
6194 # check for some common methods of building with pthread support
6195 # do this before the optional library checks as some of them require pthreads
6196 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
6197     if check_lib pthreads pthread.h pthread_join   -pthread &&
6198        check_lib pthreads pthread.h pthread_create -pthread; then
6199         add_cflags -pthread
6200     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
6201          check_lib pthreads pthread.h pthread_create -pthreads; then
6202         add_cflags -pthreads
6203     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
6204          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
6205         add_cflags -ldl -pthread
6206     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
6207          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
6208         :
6209     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
6210          check_lib pthreads pthread.h pthread_create -lpthread; then
6211         :
6212     elif check_func pthread_join && check_func pthread_create; then
6213         enable pthreads
6214     fi
6215     check_cc pthreads "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER"
6216
6217     if enabled pthreads; then
6218         check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
6219         check_func pthread_cancel $pthreads_extralibs
6220     fi
6221 fi
6222
6223 enabled  zlib && { check_pkg_config zlib zlib "zlib.h" zlibVersion ||
6224                    check_lib zlib   zlib.h      zlibVersion    -lz; }
6225 enabled bzlib && check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
6226 enabled  lzma && check_lib lzma   lzma.h lzma_version_number -llzma
6227
6228 # On some systems dynamic loading requires no extra linker flags
6229 check_lib libdl dlfcn.h "dlopen dlsym" || check_lib libdl dlfcn.h "dlopen dlsym" -ldl
6230
6231 check_lib libm math.h sin -lm
6232
6233 atan2f_args=2
6234 copysign_args=2
6235 hypot_args=2
6236 ldexpf_args=2
6237 powf_args=2
6238
6239 for func in $MATH_FUNCS; do
6240     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
6241 done
6242
6243 for func in $COMPLEX_FUNCS; do
6244     eval check_complexfunc $func \${${func}_args:-1}
6245 done
6246
6247 # these are off by default, so fail if requested and not available
6248 enabled cuda_nvcc         && { check_nvcc cuda_nvcc || die "ERROR: failed checking for nvcc."; }
6249 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
6250 enabled decklink          && { require_headers DeckLinkAPI.h &&
6251                                { test_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a090500" || die "ERROR: Decklink API version must be >= 10.9.5."; } }
6252 enabled frei0r            && require_headers "frei0r.h dlfcn.h"
6253 enabled gmp               && require gmp gmp.h mpz_export -lgmp
6254 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
6255 enabled jni               && { [ $target_os = "android" ] && check_headers jni.h && enabled pthreads || die "ERROR: jni not found"; }
6256 enabled ladspa            && require_headers "ladspa.h dlfcn.h"
6257 enabled libaom            && require_pkg_config libaom "aom >= 1.0.0" aom/aom_codec.h aom_codec_version
6258 enabled libaribb24        && { check_pkg_config libaribb24 "aribb24 > 1.0.3" "aribb24/aribb24.h" arib_instance_new ||
6259                                { enabled gpl && require_pkg_config libaribb24 aribb24 "aribb24/aribb24.h" arib_instance_new; } ||
6260                                die "ERROR: libaribb24 requires version higher than 1.0.3 or --enable-gpl."; }
6261 enabled lv2               && require_pkg_config lv2 lilv-0 "lilv/lilv.h" lilv_world_new
6262 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
6263 enabled libass            && require_pkg_config libass libass ass/ass.h ass_library_init
6264 enabled libbluray         && require_pkg_config libbluray libbluray libbluray/bluray.h bd_open
6265 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
6266 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
6267                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
6268                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
6269 enabled libcaca           && require_pkg_config libcaca caca caca.h caca_create_canvas
6270 enabled libcodec2         && require libcodec2 codec2/codec2.h codec2_create -lcodec2
6271 enabled libdav1d          && require_pkg_config libdav1d "dav1d >= 0.4.0" "dav1d/dav1d.h" dav1d_version
6272 enabled libdavs2          && require_pkg_config libdavs2 "davs2 >= 1.6.0" davs2.h davs2_decoder_open
6273 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
6274 enabled libdrm            && require_pkg_config libdrm libdrm xf86drm.h drmGetVersion
6275 enabled libfdk_aac        && { check_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
6276                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
6277                                  warn "using libfdk without pkg-config"; } }
6278 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"
6279 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
6280 enabled fontconfig        && enable libfontconfig
6281 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
6282 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
6283 enabled libfribidi        && require_pkg_config libfribidi fribidi fribidi.h fribidi_version_info
6284 enabled libglslang        && require_cpp libglslang glslang/SPIRV/GlslangToSpv.h "glslang::TIntermediate*" -lglslang -lOSDependent -lHLSL -lOGLCompiler -lSPVRemapper -lSPIRV -lSPIRV-Tools-opt -lSPIRV-Tools -lpthread -lstdc++
6285 enabled libgme            && { check_pkg_config libgme libgme gme/gme.h gme_new_emu ||
6286                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }
6287 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
6288                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
6289                                done || die "ERROR: libgsm not found"; }
6290 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc $pthreads_extralibs
6291 enabled libklvanc         && require libklvanc libklvanc/vanc.h klvanc_context_create -lklvanc
6292 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
6293 enabled liblensfun        && require_pkg_config liblensfun lensfun lensfun.h lf_db_new
6294 # While it may appear that require is being used as a pkg-config
6295 # fallback for libmfx, it is actually being used to detect a different
6296 # installation route altogether.  If libmfx is installed via the Intel
6297 # Media SDK or Intel Media Server Studio, these don't come with
6298 # pkg-config support.  Instead, users should make sure that the build
6299 # can find the libraries and headers through other means.
6300 enabled libmfx            && { check_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit ||
6301                                { require libmfx "mfx/mfxvideo.h" MFXInit "-llibmfx $advapi32_extralibs" && warn "using libmfx without pkg-config"; } }
6302 if enabled libmfx; then
6303    check_cc MFX_CODEC_VP9 "mfx/mfxvp9.h mfx/mfxstructures.h" "MFX_CODEC_VP9"
6304 fi
6305
6306 enabled libmodplug        && require_pkg_config libmodplug libmodplug libmodplug/modplug.h ModPlug_Load
6307 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame $libm_extralibs
6308 enabled libmysofa         && { check_pkg_config libmysofa libmysofa mysofa.h mysofa_neighborhood_init_withstepdefine ||
6309                                require libmysofa mysofa.h mysofa_neighborhood_init_withstepdefine -lmysofa $zlib_extralibs; }
6310 enabled libnpp            && { check_lib libnpp npp.h nppGetLibVersion -lnppig -lnppicc -lnppc -lnppidei ||
6311                                check_lib libnpp npp.h nppGetLibVersion -lnppi -lnppc -lnppidei ||
6312                                die "ERROR: libnpp not found"; }
6313 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
6314 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
6315 enabled libopencv         && { check_headers opencv2/core/core_c.h &&
6316                                { check_pkg_config libopencv opencv opencv2/core/core_c.h cvCreateImageHeader ||
6317                                  require libopencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
6318                                require_pkg_config libopencv opencv opencv/cxcore.h cvCreateImageHeader; }
6319 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
6320 enabled libopenjpeg       && { check_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version ||
6321                                { require_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } }
6322 enabled libopenmpt        && require_pkg_config libopenmpt "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create -lstdc++ && append libopenmpt_extralibs "-lstdc++"
6323 enabled libopus           && {
6324     enabled libopus_decoder && {
6325         require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
6326     }
6327     enabled libopus_encoder && {
6328         require_pkg_config libopus opus opus_multistream.h opus_multistream_surround_encoder_create
6329     }
6330 }
6331 enabled libpulse          && require_pkg_config libpulse libpulse pulse/pulseaudio.h pa_context_new
6332 enabled librabbitmq       && require_pkg_config librabbitmq "librabbitmq >= 0.7.1" amqp.h amqp_new_connection
6333 enabled librav1e          && require_pkg_config librav1e "rav1e >= 0.1.0" rav1e.h rav1e_context_new
6334 enabled librsvg           && require_pkg_config librsvg librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
6335 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
6336 enabled librubberband     && require_pkg_config librubberband "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new -lstdc++ && append librubberband_extralibs "-lstdc++"
6337 enabled libshine          && require_pkg_config libshine shine shine/layer3.h shine_encode_buffer
6338 enabled libsmbclient      && { check_pkg_config libsmbclient smbclient libsmbclient.h smbc_init ||
6339                                require libsmbclient libsmbclient.h smbc_init -lsmbclient; }
6340 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy -lstdc++
6341 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
6342 enabled libssh            && require_pkg_config libssh libssh libssh/sftp.h sftp_init
6343 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init
6344 enabled libsrt            && require_pkg_config libsrt "srt >= 1.3.0" srt/srt.h srt_socket
6345 enabled libtensorflow     && require libtensorflow tensorflow/c/c_api.h TF_Version -ltensorflow
6346 enabled libtesseract      && require_pkg_config libtesseract tesseract tesseract/capi.h TessBaseAPICreate
6347 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
6348 enabled libtls            && require_pkg_config libtls libtls tls.h tls_configure
6349 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
6350                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
6351                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
6352 enabled libv4l2           && require_pkg_config libv4l2 libv4l2 libv4l2.h v4l2_ioctl
6353 enabled libvidstab        && require_pkg_config libvidstab "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
6354 enabled libvmaf           && require_pkg_config libvmaf "libvmaf >= 1.3.9" libvmaf.h compute_vmaf
6355 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
6356 enabled libvorbis         && require_pkg_config libvorbis vorbis vorbis/codec.h vorbis_info_init &&
6357                              require_pkg_config libvorbisenc vorbisenc vorbis/vorbisenc.h vorbis_encode_init
6358
6359 enabled libvpx            && {
6360     enabled libvpx_vp8_decoder && {
6361         check_pkg_config libvpx_vp8_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
6362             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"
6363     }
6364     enabled libvpx_vp8_encoder && {
6365         check_pkg_config libvpx_vp8_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
6366             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"
6367     }
6368     enabled libvpx_vp9_decoder && {
6369         check_pkg_config libvpx_vp9_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
6370             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"
6371     }
6372     enabled libvpx_vp9_encoder && {
6373         check_pkg_config libvpx_vp9_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
6374             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"
6375     }
6376     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
6377         die "libvpx enabled but no supported decoders found"
6378     fi
6379 }
6380
6381 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
6382 enabled libwebp           && {
6383     enabled libwebp_encoder      && require_pkg_config libwebp "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
6384     enabled libwebp_anim_encoder && check_pkg_config libwebp_anim_encoder "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit; }
6385 enabled libx264           && { check_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode ||
6386                                { require libx264 "stdint.h x264.h" x264_encoder_encode "-lx264 $pthreads_extralibs $libm_extralibs" &&
6387                                  warn "using libx264 without pkg-config"; } } &&
6388                              require_cpp_condition libx264 x264.h "X264_BUILD >= 118" &&
6389                              check_cpp_condition libx262 x264.h "X264_MPEG2"
6390 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
6391                              require_cpp_condition libx265 x265.h "X265_BUILD >= 70"
6392 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode "-lxavs $pthreads_extralibs $libm_extralibs"
6393 enabled libxavs2          && require_pkg_config libxavs2 "xavs2 >= 1.3.0" "stdint.h xavs2.h" xavs2_api_get
6394 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
6395 enabled libzimg           && require_pkg_config libzimg "zimg >= 2.7.0" zimg.h zimg_get_api_version
6396 enabled libzmq            && require_pkg_config libzmq "libzmq >= 4.2.1" zmq.h zmq_ctx_new
6397 enabled libzvbi           && require_pkg_config libzvbi zvbi-0.2 libzvbi.h vbi_decoder_new &&
6398                              { test_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
6399                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
6400 enabled libxml2           && require_pkg_config libxml2 libxml-2.0 libxml2/libxml/xmlversion.h xmlCheckVersion
6401 enabled mbedtls           && { check_pkg_config mbedtls mbedtls mbedtls/x509_crt.h mbedtls_x509_crt_init ||
6402                                check_pkg_config mbedtls mbedtls mbedtls/ssl.h mbedtls_ssl_init ||
6403                                check_lib mbedtls mbedtls/ssl.h mbedtls_ssl_init -lmbedtls -lmbedx509 -lmbedcrypto ||
6404                                die "ERROR: mbedTLS not found"; }
6405 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
6406 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
6407                                { ! enabled cross_compile &&
6408                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
6409                                  add_ldflags -L/opt/vc/lib/ &&
6410                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
6411                                die "ERROR: mmal not found" &&
6412                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
6413 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
6414                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
6415                                die "ERROR: openal not found"; } &&
6416                              { test_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
6417                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
6418 enabled opencl            && { check_pkg_config opencl OpenCL CL/cl.h clEnqueueNDRangeKernel ||
6419                                check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
6420                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
6421                                die "ERROR: opencl not found"; } &&
6422                              { test_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
6423                                test_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
6424                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
6425 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
6426                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
6427                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
6428                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
6429                                die "ERROR: opengl not found."
6430                              }
6431 enabled omx_rpi           && { test_code cc OMX_Core.h OMX_IndexConfigBrcmVideoRequestIFrame ||
6432                                { ! enabled cross_compile &&
6433                                  add_cflags -isystem/opt/vc/include/IL &&
6434                                  test_code cc OMX_Core.h OMX_IndexConfigBrcmVideoRequestIFrame; } ||
6435                                die "ERROR: OpenMAX IL headers from raspberrypi/firmware not found"; } &&
6436                              enable omx
6437 enabled omx               && require_headers OMX_Core.h
6438 enabled openssl           && { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
6439                                check_pkg_config openssl openssl openssl/ssl.h SSL_library_init ||
6440                                check_lib openssl openssl/ssl.h OPENSSL_init_ssl -lssl -lcrypto ||
6441                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
6442                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
6443                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
6444                                die "ERROR: openssl not found"; }
6445 enabled pocketsphinx      && require_pkg_config pocketsphinx pocketsphinx pocketsphinx/pocketsphinx.h ps_init
6446 enabled rkmpp             && { require_pkg_config rkmpp rockchip_mpp  rockchip/rk_mpi.h mpp_create &&
6447                                require_pkg_config rockchip_mpp "rockchip_mpp >= 1.3.7" rockchip/rk_mpi.h mpp_create &&
6448                                { enabled libdrm ||
6449                                  die "ERROR: rkmpp requires --enable-libdrm"; }
6450                              }
6451 enabled vapoursynth       && require_pkg_config vapoursynth "vapoursynth-script >= 42" VSScript.h vsscript_init
6452
6453
6454 if enabled gcrypt; then
6455     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
6456     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
6457         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
6458         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
6459         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
6460             die "ERROR: gcrypt not found"
6461         add_cflags $gcrypt_cflags
6462     else
6463         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
6464     fi
6465 fi
6466
6467 if enabled sdl2; then
6468     SDL2_CONFIG="${cross_prefix}sdl2-config"
6469     test_pkg_config sdl2 "sdl2 >= 2.0.1 sdl2 < 2.1.0" SDL_events.h SDL_PollEvent
6470     if disabled sdl2 && "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6471         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6472         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6473         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6474         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6475         check_func_headers SDL_events.h SDL_PollEvent $sdl2_extralibs $sdl2_cflags &&
6476             enable sdl2
6477     fi
6478     if test $target_os = "mingw32"; then
6479         sdl2_extralibs=$(filter_out '-mwindows' $sdl2_extralibs)
6480     fi
6481 fi
6482
6483 if enabled decklink; then
6484     case $target_os in
6485         mingw32*|mingw64*|win32|win64)
6486             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6487             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6488             ;;
6489     esac
6490 fi
6491
6492 enabled securetransport &&
6493     check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6494     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" ||
6495         disable securetransport
6496
6497 enabled securetransport &&
6498     check_func SecItemImport "-Wl,-framework,CoreFoundation -Wl,-framework,Security"
6499
6500 enabled schannel &&
6501     check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6502     test_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" &&
6503     schannel_extralibs="-lsecur32" ||
6504         disable schannel
6505
6506 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6507 enabled makeinfo \
6508     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6509     && enable makeinfo_html || disable makeinfo_html
6510 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6511 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6512 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6513 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6514
6515 # check V4L2 codecs available in the API
6516 if enabled v4l2_m2m; then
6517     check_headers linux/fb.h
6518     check_headers linux/videodev2.h
6519     test_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6520     check_cc v4l2_m2m linux/videodev2.h "int i = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_VIDEO_M2M | V4L2_BUF_FLAG_LAST;"
6521     check_cc vc1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VC1_ANNEX_G;"
6522     check_cc mpeg1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG1;"
6523     check_cc mpeg2_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG2;"
6524     check_cc mpeg4_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG4;"
6525     check_cc hevc_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_HEVC;"
6526     check_cc h263_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H263;"
6527     check_cc h264_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H264;"
6528     check_cc vp8_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP8;"
6529     check_cc vp9_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP9;"
6530 fi
6531
6532 check_headers sys/videoio.h
6533 test_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6534
6535 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6536 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6537 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6538 # w32api 3.12 had it defined wrong
6539 check_cpp_condition vfwcap_defines vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER"
6540
6541 check_type "dshow.h" IBaseFilter
6542
6543 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6544 check_headers "dev/bktr/ioctl_meteor.h dev/bktr/ioctl_bt848.h"                   ||
6545     check_headers "machine/ioctl_meteor.h machine/ioctl_bt848.h"                 ||
6546     check_headers "dev/video/meteor/ioctl_meteor.h dev/video/bktr/ioctl_bt848.h" ||
6547     check_headers "dev/ic/bt8xx.h"
6548
6549 if check_struct sys/soundcard.h audio_buf_info bytes; then
6550     enable_sanitized sys/soundcard.h
6551 else
6552     test_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_sanitized sys/soundcard.h
6553     #include <sys/soundcard.h>
6554     audio_buf_info abc;
6555 EOF
6556 fi
6557
6558 enabled alsa && { check_pkg_config alsa alsa "alsa/asoundlib.h" snd_pcm_htimestamp ||
6559                   check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound; }
6560
6561 enabled libjack &&
6562     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
6563
6564 enabled sndio && check_lib sndio sndio.h sio_open -lsndio
6565
6566 if enabled libcdio; then
6567     check_pkg_config libcdio libcdio_paranoia "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open ||
6568     check_pkg_config libcdio libcdio_paranoia "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open ||
6569     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6570     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6571     die "ERROR: No usable libcdio/cdparanoia found"
6572 fi
6573
6574 enabled libxcb && check_pkg_config libxcb "xcb >= 1.4" xcb/xcb.h xcb_connect ||
6575     disable libxcb_shm libxcb_shape libxcb_xfixes
6576
6577 if enabled libxcb; then
6578     enabled libxcb_shm    && check_pkg_config libxcb_shm    xcb-shm    xcb/shm.h    xcb_shm_attach
6579     enabled libxcb_shape  && check_pkg_config libxcb_shape  xcb-shape  xcb/shape.h  xcb_shape_get_rectangles
6580     enabled libxcb_xfixes && check_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
6581 fi
6582
6583 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6584
6585 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6586 # the desktop api partition
6587 test_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
6588 #ifdef WINAPI_FAMILY
6589 #include <winapifamily.h>
6590 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
6591 #error desktop, not uwp
6592 #else
6593 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
6594 #endif
6595 #else
6596 #error no family set
6597 #endif
6598 EOF
6599
6600 enabled vaapi &&
6601     check_pkg_config vaapi "libva >= 0.35.0" "va/va.h" vaInitialize
6602
6603 if enabled vaapi; then
6604     check_pkg_config vaapi_drm "libva-drm" "va/va_drm.h" vaGetDisplayDRM
6605
6606     if enabled xlib; then
6607         check_pkg_config vaapi_x11 "libva-x11" "va/va_x11.h" vaGetDisplay
6608     fi
6609
6610     check_cpp_condition vaapi_1 "va/va.h" "VA_CHECK_VERSION(1, 0, 0)"
6611
6612     check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
6613     check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
6614     check_type   "va/va.h va/va_vpp.h" "VAProcFilterParameterBufferHDRToneMapping"
6615     check_struct "va/va.h va/va_vpp.h" "VAProcPipelineCaps" rotation_flags
6616     check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
6617     check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
6618     check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
6619     check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
6620 fi
6621
6622 if enabled_all opencl libdrm ; then
6623     check_type "CL/cl_intel.h" "clCreateImageFromFdINTEL_fn" &&
6624         enable opencl_drm_beignet
6625     check_func_headers "CL/cl_ext.h" clImportMemoryARM &&
6626         enable opencl_drm_arm
6627 fi
6628
6629 if enabled_all opencl vaapi ; then
6630     if enabled opencl_drm_beignet ; then
6631         enable opencl_vaapi_beignet
6632     else
6633         check_type "CL/cl.h CL/cl_va_api_media_sharing_intel.h" "clCreateFromVA_APIMediaSurfaceINTEL_fn" &&
6634             enable opencl_vaapi_intel_media
6635     fi
6636 fi
6637
6638 if enabled_all opencl dxva2 ; then
6639     check_type "CL/cl_dx9_media_sharing.h" cl_dx9_surface_info_khr &&
6640         enable opencl_dxva2
6641 fi
6642
6643 if enabled_all opencl d3d11va ; then
6644     check_type "CL/cl_d3d11.h" clGetDeviceIDsFromD3D11KHR_fn &&
6645         enable opencl_d3d11
6646 fi
6647
6648 enabled vdpau &&
6649     check_cpp_condition vdpau vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP"
6650
6651 enabled vdpau &&
6652     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6653
6654 enabled crystalhd && check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
6655
6656 enabled vulkan &&
6657     require_pkg_config vulkan "vulkan >= 1.1.97" "vulkan/vulkan.h" vkCreateInstance
6658
6659 if enabled x86; then
6660     case $target_os in
6661         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6662             ;;
6663         *)
6664             disable ffnvcodec cuvid nvdec nvenc
6665             ;;
6666     esac
6667 elif enabled ppc64 && ! enabled bigendian; then
6668     case $target_os in
6669         linux)
6670             ;;
6671         *)
6672             disable ffnvcodec cuvid nvdec nvenc
6673             ;;
6674     esac
6675 else
6676     disable ffnvcodec cuvid nvdec nvenc
6677 fi
6678
6679 enabled ffnvcodec && enable cuda
6680
6681 enabled nvenc &&
6682     test_cc -I$source_path <<EOF || disable nvenc
6683 #include <ffnvcodec/nvEncodeAPI.h>
6684 NV_ENCODE_API_FUNCTION_LIST flist;
6685 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6686 int main(void) { return 0; }
6687 EOF
6688
6689 enabled amf &&
6690     check_cpp_condition amf "AMF/core/Version.h" \
6691         "(AMF_VERSION_MAJOR << 48 | AMF_VERSION_MINOR << 32 | AMF_VERSION_RELEASE << 16 | AMF_VERSION_BUILD_NUM) >= 0x0001000400090000"
6692
6693 # Funny iconv installations are not unusual, so check it after all flags have been set
6694 if enabled libc_iconv; then
6695     check_func_headers iconv.h iconv
6696 elif enabled iconv; then
6697     check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6698 fi
6699
6700 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6701
6702 # add some useful compiler flags if supported
6703 check_cflags -Wdeclaration-after-statement
6704 check_cflags -Wall
6705 check_cflags -Wdisabled-optimization
6706 check_cflags -Wpointer-arith
6707 check_cflags -Wredundant-decls
6708 check_cflags -Wwrite-strings
6709 check_cflags -Wtype-limits
6710 check_cflags -Wundef
6711 check_cflags -Wmissing-prototypes
6712 check_cflags -Wno-pointer-to-int-cast
6713 check_cflags -Wstrict-prototypes
6714 check_cflags -Wempty-body
6715
6716 if enabled extra_warnings; then
6717     check_cflags -Wcast-qual
6718     check_cflags -Wextra
6719     check_cflags -Wpedantic
6720 fi
6721
6722 check_disable_warning(){
6723     warning_flag=-W${1#-Wno-}
6724     test_cflags $unknown_warning_flags $warning_flag && add_cflags $1
6725 }
6726
6727 test_cflags -Werror=unused-command-line-argument &&
6728     append unknown_warning_flags "-Werror=unused-command-line-argument"
6729 test_cflags -Werror=unknown-warning-option &&
6730     append unknown_warning_flags "-Werror=unknown-warning-option"
6731
6732 check_disable_warning -Wno-parentheses
6733 check_disable_warning -Wno-switch
6734 check_disable_warning -Wno-format-zero-length
6735 check_disable_warning -Wno-pointer-sign
6736 check_disable_warning -Wno-unused-const-variable
6737 check_disable_warning -Wno-bool-operation
6738 check_disable_warning -Wno-char-subscripts
6739
6740 check_disable_warning_headers(){
6741     warning_flag=-W${1#-Wno-}
6742     test_cflags $warning_flag && add_cflags_headers $1
6743 }
6744
6745 check_disable_warning_headers -Wno-deprecated-declarations
6746 check_disable_warning_headers -Wno-unused-variable
6747
6748 test_cc <<EOF && enable blocks_extension
6749 void (^block)(void);
6750 EOF
6751
6752 # add some linker flags
6753 check_ldflags -Wl,--warn-common
6754 check_ldflags -Wl,-rpath-link=:libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6755 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir && add_ldsoflags -Wl,-rpath,$libdir
6756 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6757
6758 # add some strip flags
6759 check_stripflags -x
6760
6761 enabled neon_clobber_test &&
6762     check_ldflags -Wl,--wrap,avcodec_open2              \
6763                   -Wl,--wrap,avcodec_decode_audio4      \
6764                   -Wl,--wrap,avcodec_decode_video2      \
6765                   -Wl,--wrap,avcodec_decode_subtitle2   \
6766                   -Wl,--wrap,avcodec_encode_audio2      \
6767                   -Wl,--wrap,avcodec_encode_video2      \
6768                   -Wl,--wrap,avcodec_encode_subtitle    \
6769                   -Wl,--wrap,avcodec_send_packet        \
6770                   -Wl,--wrap,avcodec_receive_packet     \
6771                   -Wl,--wrap,avcodec_send_frame         \
6772                   -Wl,--wrap,avcodec_receive_frame      \
6773                   -Wl,--wrap,swr_convert                \
6774                   -Wl,--wrap,avresample_convert ||
6775     disable neon_clobber_test
6776
6777 enabled xmm_clobber_test &&
6778     check_ldflags -Wl,--wrap,avcodec_open2              \
6779                   -Wl,--wrap,avcodec_decode_audio4      \
6780                   -Wl,--wrap,avcodec_decode_video2      \
6781                   -Wl,--wrap,avcodec_decode_subtitle2   \
6782                   -Wl,--wrap,avcodec_encode_audio2      \
6783                   -Wl,--wrap,avcodec_encode_video2      \
6784                   -Wl,--wrap,avcodec_encode_subtitle    \
6785                   -Wl,--wrap,avcodec_send_packet        \
6786                   -Wl,--wrap,avcodec_receive_packet     \
6787                   -Wl,--wrap,avcodec_send_frame         \
6788                   -Wl,--wrap,avcodec_receive_frame      \
6789                   -Wl,--wrap,swr_convert                \
6790                   -Wl,--wrap,avresample_convert         \
6791                   -Wl,--wrap,sws_scale ||
6792     disable xmm_clobber_test
6793
6794 check_ld "cc" proper_dce <<EOF
6795 extern const int array[512];
6796 static inline int func(void) { return array[0]; }
6797 int main(void) { return 0; }
6798 EOF
6799
6800 if enabled proper_dce; then
6801     echo "X { local: *; };" > $TMPV
6802     if test_ldflags -Wl,${version_script},$TMPV; then
6803         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6804         quotes='""'
6805         test_cc <<EOF && enable symver_asm_label
6806 void ff_foo(void) __asm__ ("av_foo@VERSION");
6807 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6808 EOF
6809         test_cc <<EOF && enable symver_gnu_asm
6810 __asm__(".symver ff_foo,av_foo@VERSION");
6811 void ff_foo(void) {}
6812 EOF
6813     fi
6814 fi
6815
6816 if [ -z "$optflags" ]; then
6817     if enabled small; then
6818         optflags=$cflags_size
6819     elif enabled optimizations; then
6820         optflags=$cflags_speed
6821     else
6822         optflags=$cflags_noopt
6823     fi
6824 fi
6825
6826 check_optflags(){
6827     check_cflags "$@"
6828     enabled lto && check_ldflags "$@"
6829 }
6830
6831 check_optflags $optflags
6832 check_optflags -fno-math-errno
6833 check_optflags -fno-signed-zeros
6834
6835 if enabled lto; then
6836     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6837     check_cflags  -flto
6838     check_ldflags -flto $cpuflags
6839     disable inline_asm_direct_symbol_refs
6840 fi
6841
6842 enabled ftrapv && check_cflags -ftrapv
6843
6844 test_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6845 int x;
6846 EOF
6847
6848
6849 if enabled icc; then
6850     # Just warnings, no remarks
6851     check_cflags -w1
6852     # -wd: Disable following warnings
6853     # 144, 167, 556: -Wno-pointer-sign
6854     # 188: enumerated type mixed with another type
6855     # 1292: attribute "foo" ignored
6856     # 1419: external declaration in primary source file
6857     # 10006: ignoring unknown option -fno-signed-zeros
6858     # 10148: ignoring unknown option -Wno-parentheses
6859     # 10156: ignoring option '-W'; no argument required
6860     # 13200: No EMMS instruction before call to function
6861     # 13203: No EMMS instruction before return from function
6862     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6863     # 11030: Warning unknown option --as-needed
6864     # 10156: ignoring option '-export'; no argument required
6865     check_ldflags -wd10156,11030
6866     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6867     enable ebp_available
6868     # The test above does not test linking
6869     enabled lto && disable symver_asm_label
6870     if enabled x86_32; then
6871         icc_version=$($cc -dumpversion)
6872         test ${icc_version%%.*} -ge 11 &&
6873             check_cflags -falign-stack=maintain-16-byte ||
6874             disable aligned_stack
6875     fi
6876 elif enabled gcc; then
6877     check_optflags -fno-tree-vectorize
6878     check_cflags -Werror=format-security
6879     check_cflags -Werror=implicit-function-declaration
6880     check_cflags -Werror=missing-prototypes
6881     check_cflags -Werror=return-type
6882     check_cflags -Werror=vla
6883     check_cflags -Wformat
6884     check_cflags -fdiagnostics-color=auto
6885     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6886     if enabled x86_32; then
6887         case $target_os in
6888         *bsd*)
6889             # BSDs don't guarantee a 16 byte aligned stack, but we can
6890             # request GCC to try to maintain 16 byte alignment throughout
6891             # function calls. Library entry points that might call assembly
6892             # functions align the stack. (The parameter means 2^4 bytes.)
6893             check_cflags -mpreferred-stack-boundary=4
6894             ;;
6895         esac
6896     fi
6897 elif enabled llvm_gcc; then
6898     check_cflags -mllvm -stack-alignment=16
6899 elif enabled clang; then
6900     if enabled x86_32; then
6901         # Clang doesn't support maintaining alignment without assuming the
6902         # same alignment in every function. If 16 byte alignment would be
6903         # enabled, one would also have to either add attribute_align_arg on
6904         # every single entry point into the libraries or enable -mstackrealign
6905         # (doing stack realignment in every single function).
6906         case $target_os in
6907         mingw32|win32|*bsd*)
6908             disable aligned_stack
6909             ;;
6910         *)
6911             check_cflags -mllvm -stack-alignment=16
6912             check_cflags -mstack-alignment=16
6913             ;;
6914         esac
6915     else
6916         check_cflags -mllvm -stack-alignment=16
6917         check_cflags -mstack-alignment=16
6918     fi
6919     check_cflags -Qunused-arguments
6920     check_cflags -Werror=implicit-function-declaration
6921     check_cflags -Werror=missing-prototypes
6922     check_cflags -Werror=return-type
6923 elif enabled cparser; then
6924     add_cflags -Wno-missing-variable-declarations
6925     add_cflags -Wno-empty-statement
6926 elif enabled armcc; then
6927     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6928     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6929     # 2523: use of inline assembly is deprecated
6930     add_cflags -W${armcc_opt},--diag_suppress=2523
6931     add_cflags -W${armcc_opt},--diag_suppress=1207
6932     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6933     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6934     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6935     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6936 elif enabled pathscale; then
6937     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6938     disable inline_asm
6939 elif enabled_any msvc icl; then
6940     enabled x86_32 && disable aligned_stack
6941     enabled_all x86_32 debug && add_cflags -Oy-
6942     enabled debug && add_ldflags -debug
6943     enable pragma_deprecated
6944     if enabled icl; then
6945         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6946         # (correctly) on icl 13.x.
6947         test_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6948             add_cflags -Qansi-alias
6949         # Some inline asm is not compilable in debug
6950         if enabled debug; then
6951             disable ebp_available
6952             disable ebx_available
6953         fi
6954     fi
6955     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6956     check_cpp_condition log2 crtversion.h "_VC_CRT_MAJOR_VERSION >= 12"
6957     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6958     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6959     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6960     # MSVC 2013 and newer can handle it fine.
6961     # If this declspec fails, force including stdlib.h before the restrict redefinition
6962     # happens in config.h.
6963     if [ $restrict_keyword != restrict ]; then
6964         test_cc <<EOF || add_cflags -FIstdlib.h
6965 __declspec($restrict_keyword) void *foo(int);
6966 EOF
6967     fi
6968     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6969     # Issue has been fixed in MSVC v19.00.24218.
6970     test_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6971         check_cflags -d2SSAOptimizer-
6972     # enable utf-8 source processing on VS2015 U2 and newer
6973     test_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6974         add_cflags -utf-8
6975 fi
6976
6977 for pfx in "" host_; do
6978     varname=${pfx%_}cc_type
6979     eval "type=\$$varname"
6980     if [ "$type" = "msvc" ]; then
6981         test_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6982 static inline int foo(int a) { return a; }
6983 EOF
6984     fi
6985 done
6986
6987 case $as_type in
6988     clang)
6989         add_asflags -Qunused-arguments
6990     ;;
6991 esac
6992
6993 case $ld_type in
6994     clang)
6995         check_ldflags -Qunused-arguments
6996     ;;
6997 esac
6998
6999 enable frame_thread_encoder
7000
7001 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
7002
7003 check_deps $CONFIG_LIST       \
7004            $CONFIG_EXTRA      \
7005            $HAVE_LIST         \
7006            $ALL_COMPONENTS    \
7007
7008 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"
7009 enabled avresample && warn "Building with deprecated library libavresample"
7010
7011 case $target_os in
7012 haiku)
7013     disable memalign
7014     disable posix_memalign
7015     ;;
7016 *-dos|freedos|opendos)
7017     if test_cpp_condition sys/version.h "defined(__DJGPP__) && __DJGPP__ == 2 && __DJGPP_MINOR__ == 5"; then
7018         disable memalign
7019     fi
7020     ;;
7021 esac
7022
7023 flatten_extralibs(){
7024     nested_entries=
7025     list_name=$1
7026     eval list=\$${1}
7027     for entry in $list; do
7028         entry_copy=$entry
7029         resolve entry_copy
7030         flat_entries=
7031         for e in $entry_copy; do
7032             case $e in
7033                 *_extralibs) nested_entries="$nested_entries$e ";;
7034                           *) flat_entries="$flat_entries$e ";;
7035             esac
7036         done
7037         eval $entry="\$flat_entries"
7038     done
7039     append $list_name "$nested_entries"
7040
7041     resolve nested_entries
7042     if test -n "$(filter '*_extralibs' $nested_entries)"; then
7043         flatten_extralibs $list_name
7044     fi
7045 }
7046
7047 flatten_extralibs_wrapper(){
7048     list_name=$1
7049     flatten_extralibs $list_name
7050     unique $list_name
7051     resolve $list_name
7052     eval $list_name=\$\(\$ldflags_filter \$$list_name\)
7053     eval printf \''%s'\' \""\$$list_name"\"
7054 }
7055
7056 for linkunit in $LIBRARY_LIST; do
7057     unset current_extralibs
7058     eval components=\$$(toupper ${linkunit})_COMPONENTS_LIST
7059     for comp in ${components}; do
7060         enabled $comp || continue
7061         comp_extralibs="${comp}_extralibs"
7062         append current_extralibs $comp_extralibs
7063     done
7064     eval prepend ${linkunit}_extralibs $current_extralibs
7065 done
7066
7067 for linkunit in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
7068     eval ${linkunit}_extralibs=\$\(flatten_extralibs_wrapper ${linkunit}_extralibs\)
7069 done
7070
7071 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
7072
7073 for thread in $THREADS_LIST; do
7074     if enabled $thread; then
7075         test -n "$thread_type" &&
7076             die "ERROR: Only one thread type must be selected." ||
7077             thread_type="$thread"
7078     fi
7079 done
7080
7081 if disabled stdatomic; then
7082     if enabled atomics_gcc; then
7083         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
7084     elif enabled atomics_win32; then
7085         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
7086     elif enabled atomics_suncc; then
7087         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
7088     elif enabled pthreads; then
7089         add_compat atomics/pthread/stdatomic.o
7090         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
7091     else
7092         enabled threads && die "Threading is enabled, but no atomics are available"
7093         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
7094     fi
7095 fi
7096
7097 # Check if requested libraries were found.
7098 for lib in $AUTODETECT_LIBS; do
7099     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
7100 done
7101
7102 enabled zlib && add_cppflags -DZLIB_CONST
7103
7104 # conditional library dependencies, in any order
7105 enabled afftdn_filter       && prepend avfilter_deps "avcodec"
7106 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
7107 enabled afir_filter         && prepend avfilter_deps "avcodec"
7108 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
7109 enabled aresample_filter    && prepend avfilter_deps "swresample"
7110 enabled atempo_filter       && prepend avfilter_deps "avcodec"
7111 enabled bm3d_filter         && prepend avfilter_deps "avcodec"
7112 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
7113 enabled convolve_filter     && prepend avfilter_deps "avcodec"
7114 enabled deconvolve_filter   && prepend avfilter_deps "avcodec"
7115 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
7116 enabled elbg_filter         && prepend avfilter_deps "avcodec"
7117 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
7118 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
7119 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
7120 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
7121 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
7122 enabled pan_filter          && prepend avfilter_deps "swresample"
7123 enabled pp_filter           && prepend avfilter_deps "postproc"
7124 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
7125 enabled resample_filter && prepend avfilter_deps "avresample"
7126 enabled sab_filter          && prepend avfilter_deps "swscale"
7127 enabled scale_filter    && prepend avfilter_deps "swscale"
7128 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
7129 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
7130 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
7131 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
7132 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
7133 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
7134 enabled smartblur_filter    && prepend avfilter_deps "swscale"
7135 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
7136 enabled spp_filter          && prepend avfilter_deps "avcodec"
7137 enabled sr_filter           && prepend avfilter_deps "avformat swscale"
7138 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
7139 enabled uspp_filter         && prepend avfilter_deps "avcodec"
7140 enabled zoompan_filter      && prepend avfilter_deps "swscale"
7141
7142 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
7143
7144 #FIXME
7145 enabled_any sdl2_outdev opengl_outdev && enabled sdl2 &&
7146     add_cflags $(filter_out '-Dmain=SDL_main' $sdl2_cflags)
7147
7148 enabled opus_decoder    && prepend avcodec_deps "swresample"
7149
7150 # reorder the items at var $1 to align with the items order at var $2 .
7151 # die if an item at $1 is not at $2 .
7152 reorder_by(){
7153     eval rb_in=\$$1
7154     eval rb_ordered=\$$2
7155
7156     for rb in $rb_in; do
7157         is_in $rb $rb_ordered || die "$rb at \$$1 is not at \$$2"
7158     done
7159
7160     rb_out=
7161     for rb in $rb_ordered; do
7162         is_in $rb $rb_in && rb_out="$rb_out$rb "
7163     done
7164     eval $1=\$rb_out
7165 }
7166
7167 # deps-expand fflib $1:  N x {append all expanded deps; unique}
7168 # within a set of N items, N expansions are enough to expose a cycle.
7169 expand_deps(){
7170     unique ${1}_deps  # required for the early break test.
7171     for dummy in $LIBRARY_LIST; do  # N iteratios
7172         eval deps=\$${1}_deps
7173         append ${1}_deps $(map 'eval echo \$${v}_deps' $deps)
7174         unique ${1}_deps
7175         eval '[ ${#deps} = ${#'${1}_deps'} ]' && break  # doesn't expand anymore
7176     done
7177
7178     eval is_in $1 \$${1}_deps && die "Dependency cycle at ${1}_deps"
7179     reorder_by ${1}_deps LIBRARY_LIST  # linking order is expected later
7180 }
7181
7182 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
7183 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
7184
7185 map 'expand_deps $v' $LIBRARY_LIST
7186
7187 if test "$quiet" != "yes"; then
7188
7189 echo "install prefix            $prefix"
7190 echo "source path               $source_path"
7191 echo "C compiler                $cc"
7192 echo "C library                 $libc_type"
7193 if test "$host_cc" != "$cc"; then
7194     echo "host C compiler           $host_cc"
7195     echo "host C library            $host_libc_type"
7196 fi
7197 echo "ARCH                      $arch ($cpu)"
7198 if test "$build_suffix" != ""; then
7199     echo "build suffix              $build_suffix"
7200 fi
7201 if test "$progs_suffix" != ""; then
7202     echo "progs suffix              $progs_suffix"
7203 fi
7204 if test "$extra_version" != ""; then
7205     echo "version string suffix     $extra_version"
7206 fi
7207 echo "big-endian                ${bigendian-no}"
7208 echo "runtime cpu detection     ${runtime_cpudetect-no}"
7209 if enabled x86; then
7210     echo "standalone assembly       ${x86asm-no}"
7211     echo "x86 assembler             ${x86asmexe}"
7212     echo "MMX enabled               ${mmx-no}"
7213     echo "MMXEXT enabled            ${mmxext-no}"
7214     echo "3DNow! enabled            ${amd3dnow-no}"
7215     echo "3DNow! extended enabled   ${amd3dnowext-no}"
7216     echo "SSE enabled               ${sse-no}"
7217     echo "SSSE3 enabled             ${ssse3-no}"
7218     echo "AESNI enabled             ${aesni-no}"
7219     echo "AVX enabled               ${avx-no}"
7220     echo "AVX2 enabled              ${avx2-no}"
7221     echo "AVX-512 enabled           ${avx512-no}"
7222     echo "XOP enabled               ${xop-no}"
7223     echo "FMA3 enabled              ${fma3-no}"
7224     echo "FMA4 enabled              ${fma4-no}"
7225     echo "i686 features enabled     ${i686-no}"
7226     echo "CMOV is fast              ${fast_cmov-no}"
7227     echo "EBX available             ${ebx_available-no}"
7228     echo "EBP available             ${ebp_available-no}"
7229 fi
7230 if enabled aarch64; then
7231     echo "NEON enabled              ${neon-no}"
7232     echo "VFP enabled               ${vfp-no}"
7233 fi
7234 if enabled arm; then
7235     echo "ARMv5TE enabled           ${armv5te-no}"
7236     echo "ARMv6 enabled             ${armv6-no}"
7237     echo "ARMv6T2 enabled           ${armv6t2-no}"
7238     echo "VFP enabled               ${vfp-no}"
7239     echo "NEON enabled              ${neon-no}"
7240     echo "THUMB enabled             ${thumb-no}"
7241 fi
7242 if enabled mips; then
7243     echo "MIPS FPU enabled          ${mipsfpu-no}"
7244     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
7245     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
7246     echo "MIPS MSA enabled          ${msa-no}"
7247     echo "MIPS MSA2 enabled         ${msa2-no}"
7248     echo "LOONGSON MMI enabled      ${mmi-no}"
7249 fi
7250 if enabled ppc; then
7251     echo "AltiVec enabled           ${altivec-no}"
7252     echo "VSX enabled               ${vsx-no}"
7253     echo "POWER8 enabled            ${power8-no}"
7254     echo "PPC 4xx optimizations     ${ppc4xx-no}"
7255     echo "dcbzl available           ${dcbzl-no}"
7256 fi
7257 echo "debug symbols             ${debug-no}"
7258 echo "strip symbols             ${stripping-no}"
7259 echo "optimize for size         ${small-no}"
7260 echo "optimizations             ${optimizations-no}"
7261 echo "static                    ${static-no}"
7262 echo "shared                    ${shared-no}"
7263 echo "postprocessing support    ${postproc-no}"
7264 echo "network support           ${network-no}"
7265 echo "threading support         ${thread_type-no}"
7266 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
7267 echo "texi2html enabled         ${texi2html-no}"
7268 echo "perl enabled              ${perl-no}"
7269 echo "pod2man enabled           ${pod2man-no}"
7270 echo "makeinfo enabled          ${makeinfo-no}"
7271 echo "makeinfo supports HTML    ${makeinfo_html-no}"
7272 test -n "$random_seed" &&
7273     echo "random seed               ${random_seed}"
7274 echo
7275
7276 echo "External libraries:"
7277 print_enabled '' $EXTERNAL_LIBRARY_LIST $EXTERNAL_AUTODETECT_LIBRARY_LIST | print_in_columns
7278 echo
7279
7280 echo "External libraries providing hardware acceleration:"
7281 print_enabled '' $HWACCEL_LIBRARY_LIST $HWACCEL_AUTODETECT_LIBRARY_LIST | print_in_columns
7282 echo
7283
7284 echo "Libraries:"
7285 print_enabled '' $LIBRARY_LIST | print_in_columns
7286 echo
7287
7288 echo "Programs:"
7289 print_enabled '' $PROGRAM_LIST | print_in_columns
7290 echo
7291
7292 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
7293     echo "Enabled ${type}s:"
7294     eval list=\$$(toupper $type)_LIST
7295     print_enabled '_*' $list | print_in_columns
7296     echo
7297 done
7298
7299 if test -n "$ignore_tests"; then
7300     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
7301     echo "Ignored FATE tests:"
7302     echo $ignore_tests | print_in_columns
7303     echo
7304 fi
7305
7306 echo "License: $license"
7307
7308 fi # test "$quiet" != "yes"
7309
7310 if test -n "$WARN_IF_GETS_DISABLED_LIST"; then
7311     for cfg in $WARN_IF_GETS_DISABLED_LIST; do
7312         if disabled $cfg; then
7313             varname=${cfg}_disable_reason
7314             eval "warn \"Disabled $cfg because \$$varname\""
7315         fi
7316     done
7317 fi
7318
7319 if test -n "$WARNINGS"; then
7320     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
7321     enabled fatal_warnings && exit 1
7322 fi
7323
7324 test -e Makefile || echo "include $source_path/Makefile" > Makefile
7325
7326 esc(){
7327     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
7328 }
7329
7330 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
7331
7332 enabled stripping || strip="echo skipping strip"
7333 enabled stripping || striptype=""
7334
7335 config_files="$TMPH ffbuild/config.mak doc/config.texi"
7336
7337 cat > ffbuild/config.mak <<EOF
7338 # Automatically generated by configure - do not modify!
7339 ifndef FFMPEG_CONFIG_MAK
7340 FFMPEG_CONFIG_MAK=1
7341 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
7342 prefix=$prefix
7343 LIBDIR=\$(DESTDIR)$libdir
7344 SHLIBDIR=\$(DESTDIR)$shlibdir
7345 INCDIR=\$(DESTDIR)$incdir
7346 BINDIR=\$(DESTDIR)$bindir
7347 DATADIR=\$(DESTDIR)$datadir
7348 DOCDIR=\$(DESTDIR)$docdir
7349 MANDIR=\$(DESTDIR)$mandir
7350 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
7351 INSTALL_NAME_DIR=$install_name_dir
7352 SRC_PATH=$source_path
7353 SRC_LINK=$source_link
7354 ifndef MAIN_MAKEFILE
7355 SRC_PATH:=\$(SRC_PATH:.%=..%)
7356 endif
7357 CC_IDENT=$cc_ident
7358 ARCH=$arch
7359 INTRINSICS=$intrinsics
7360 EXTERN_PREFIX=$extern_prefix
7361 CC=$cc
7362 CXX=$cxx
7363 AS=$as
7364 OBJCC=$objcc
7365 LD=$ld
7366 DEPCC=$dep_cc
7367 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
7368 DEPAS=$as
7369 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
7370 X86ASM=$x86asmexe
7371 DEPX86ASM=$x86asmexe
7372 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
7373 AR=$ar
7374 ARFLAGS=$arflags
7375 AR_O=$ar_o
7376 AR_CMD=$ar
7377 NM_CMD=$nm
7378 RANLIB=$ranlib
7379 STRIP=$strip
7380 STRIPTYPE=$striptype
7381 NVCC=$nvcc
7382 CP=cp -p
7383 LN_S=$ln_s
7384 CPPFLAGS=$CPPFLAGS
7385 CFLAGS=$CFLAGS
7386 CXXFLAGS=$CXXFLAGS
7387 OBJCFLAGS=$OBJCFLAGS
7388 ASFLAGS=$ASFLAGS
7389 NVCCFLAGS=$nvccflags
7390 AS_C=$AS_C
7391 AS_O=$AS_O
7392 OBJCC_C=$OBJCC_C
7393 OBJCC_E=$OBJCC_E
7394 OBJCC_O=$OBJCC_O
7395 CC_C=$CC_C
7396 CC_E=$CC_E
7397 CC_O=$CC_O
7398 CXX_C=$CXX_C
7399 CXX_O=$CXX_O
7400 NVCC_C=$NVCC_C
7401 NVCC_O=$NVCC_O
7402 LD_O=$LD_O
7403 X86ASM_O=$X86ASM_O
7404 LD_LIB=$LD_LIB
7405 LD_PATH=$LD_PATH
7406 DLLTOOL=$dlltool
7407 WINDRES=$windres
7408 DEPWINDRES=$dep_cc
7409 DOXYGEN=$doxygen
7410 LDFLAGS=$LDFLAGS
7411 LDEXEFLAGS=$LDEXEFLAGS
7412 LDSOFLAGS=$LDSOFLAGS
7413 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
7414 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
7415 X86ASMFLAGS=$X86ASMFLAGS
7416 BUILDSUF=$build_suffix
7417 PROGSSUF=$progs_suffix
7418 FULLNAME=$FULLNAME
7419 LIBPREF=$LIBPREF
7420 LIBSUF=$LIBSUF
7421 LIBNAME=$LIBNAME
7422 SLIBPREF=$SLIBPREF
7423 SLIBSUF=$SLIBSUF
7424 EXESUF=$EXESUF
7425 EXTRA_VERSION=$extra_version
7426 CCDEP=$CCDEP
7427 CXXDEP=$CXXDEP
7428 CCDEP_FLAGS=$CCDEP_FLAGS
7429 ASDEP=$ASDEP
7430 ASDEP_FLAGS=$ASDEP_FLAGS
7431 X86ASMDEP=$X86ASMDEP
7432 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
7433 CC_DEPFLAGS=$CC_DEPFLAGS
7434 AS_DEPFLAGS=$AS_DEPFLAGS
7435 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
7436 HOSTCC=$host_cc
7437 HOSTLD=$host_ld
7438 HOSTCFLAGS=$host_cflags
7439 HOSTCPPFLAGS=$host_cppflags
7440 HOSTEXESUF=$HOSTEXESUF
7441 HOSTLDFLAGS=$host_ldflags
7442 HOSTEXTRALIBS=$host_extralibs
7443 DEPHOSTCC=$host_cc
7444 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
7445 HOSTCCDEP=$HOSTCCDEP
7446 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
7447 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
7448 HOSTCC_C=$HOSTCC_C
7449 HOSTCC_O=$HOSTCC_O
7450 HOSTLD_O=$HOSTLD_O
7451 TARGET_EXEC=$target_exec $target_exec_args
7452 TARGET_PATH=$target_path
7453 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
7454 CFLAGS-ffplay=${sdl2_cflags}
7455 CFLAGS_HEADERS=$CFLAGS_HEADERS
7456 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
7457 EXTRALIBS=$extralibs
7458 COMPAT_OBJS=$compat_objs
7459 INSTALL=$install
7460 LIBTARGET=${LIBTARGET}
7461 SLIBNAME=${SLIBNAME}
7462 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
7463 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
7464 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
7465 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
7466 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
7467 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
7468 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
7469 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
7470 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
7471 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
7472 NOREDZONE_FLAGS=$noredzone_flags
7473 LIBFUZZER_PATH=$libfuzzer_path
7474 IGNORE_TESTS=$ignore_tests
7475 EOF
7476
7477 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
7478
7479 for entry in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
7480     eval echo "EXTRALIBS-${entry}=\$${entry}_extralibs" >> ffbuild/config.mak
7481 done
7482
7483 cat > $TMPH <<EOF
7484 /* Automatically generated by configure - do not modify! */
7485 #ifndef FFMPEG_CONFIG_H
7486 #define FFMPEG_CONFIG_H
7487 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
7488 #define FFMPEG_LICENSE "$(c_escape $license)"
7489 #define CONFIG_THIS_YEAR 2020
7490 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
7491 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
7492 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
7493 #define av_restrict $restrict_keyword
7494 #define EXTERN_PREFIX "${extern_prefix}"
7495 #define EXTERN_ASM ${extern_prefix}
7496 #define BUILDSUF "$build_suffix"
7497 #define SLIBSUF "$SLIBSUF"
7498 #define HAVE_MMX2 HAVE_MMXEXT
7499 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
7500 EOF
7501
7502 test -n "$assert_level" &&
7503     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
7504
7505 test -n "$malloc_prefix" &&
7506     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
7507
7508 if enabled x86asm; then
7509     append config_files $TMPASM
7510     cat > $TMPASM <<EOF
7511 ; Automatically generated by configure - do not modify!
7512 EOF
7513 fi
7514
7515 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
7516
7517
7518 mkdir -p doc
7519 mkdir -p tests
7520 mkdir -p tests/api
7521 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
7522
7523 print_config ARCH_   "$config_files" $ARCH_LIST
7524 print_config HAVE_   "$config_files" $HAVE_LIST
7525 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
7526                                      $CONFIG_EXTRA      \
7527                                      $ALL_COMPONENTS    \
7528
7529 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
7530 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
7531
7532 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
7533 cp_if_changed $TMPH config.h
7534 touch ffbuild/.config
7535
7536 enabled x86asm && cp_if_changed $TMPASM config.asm
7537
7538 cat > $TMPH <<EOF
7539 /* Generated by ffmpeg configure */
7540 #ifndef AVUTIL_AVCONFIG_H
7541 #define AVUTIL_AVCONFIG_H
7542 EOF
7543
7544 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
7545
7546 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
7547
7548 cp_if_changed $TMPH libavutil/avconfig.h
7549
7550 # full_filter_name_foo=vf_foo
7551 # full_filter_name_bar=asrc_bar
7552 # ...
7553 eval "$(sed -n "s/^extern AVFilter ff_\([avfsinkrc]\{2,5\}\)_\(.*\);/full_filter_name_\2=\1_\2/p" $source_path/libavfilter/allfilters.c)"
7554
7555 # generate the lists of enabled components
7556 print_enabled_components(){
7557     file=$1
7558     struct_name=$2
7559     name=$3
7560     shift 3
7561     echo "static const $struct_name * const $name[] = {" > $TMPH
7562     for c in $*; do
7563         if enabled $c; then
7564             case $name in
7565                 filter_list)
7566                     eval c=\$full_filter_name_${c%_filter}
7567                 ;;
7568                 indev_list)
7569                     c=${c%_indev}_demuxer
7570                 ;;
7571                 outdev_list)
7572                     c=${c%_outdev}_muxer
7573                 ;;
7574             esac
7575             printf "    &ff_%s,\n" $c >> $TMPH
7576         fi
7577     done
7578     if [ "$name" = "filter_list" ]; then
7579         for c in asrc_abuffer vsrc_buffer asink_abuffer vsink_buffer; do
7580             printf "    &ff_%s,\n" $c >> $TMPH
7581         done
7582     fi
7583     echo "    NULL };" >> $TMPH
7584     cp_if_changed $TMPH $file
7585 }
7586
7587 print_enabled_components libavfilter/filter_list.c AVFilter filter_list $FILTER_LIST
7588 print_enabled_components libavcodec/codec_list.c AVCodec codec_list $CODEC_LIST
7589 print_enabled_components libavcodec/parser_list.c AVCodecParser parser_list $PARSER_LIST
7590 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
7591 print_enabled_components libavformat/demuxer_list.c AVInputFormat demuxer_list $DEMUXER_LIST
7592 print_enabled_components libavformat/muxer_list.c AVOutputFormat muxer_list $MUXER_LIST
7593 print_enabled_components libavdevice/indev_list.c AVInputFormat indev_list $INDEV_LIST
7594 print_enabled_components libavdevice/outdev_list.c AVOutputFormat outdev_list $OUTDEV_LIST
7595 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
7596
7597 # Settings for pkg-config files
7598
7599 cat > $TMPH <<EOF
7600 # Automatically generated by configure - do not modify!
7601 shared=$shared
7602 build_suffix=$build_suffix
7603 prefix=$prefix
7604 libdir=$libdir
7605 incdir=$incdir
7606 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
7607 source_path=${source_path}
7608 LIBPREF=${LIBPREF}
7609 LIBSUF=${LIBSUF}
7610 extralibs_avutil="$avutil_extralibs"
7611 extralibs_avcodec="$avcodec_extralibs"
7612 extralibs_avformat="$avformat_extralibs"
7613 extralibs_avdevice="$avdevice_extralibs"
7614 extralibs_avfilter="$avfilter_extralibs"
7615 extralibs_avresample="$avresample_extralibs"
7616 extralibs_postproc="$postproc_extralibs"
7617 extralibs_swscale="$swscale_extralibs"
7618 extralibs_swresample="$swresample_extralibs"
7619 EOF
7620
7621 for lib in $LIBRARY_LIST; do
7622     lib_deps="$(eval echo \$${lib}_deps)"
7623     echo ${lib}_deps=\"$lib_deps\" >> $TMPH
7624 done
7625
7626 cp_if_changed $TMPH ffbuild/config.sh