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             -Wl,*)                ;;
4443             *)                    echo $flag ;;
4444         esac
4445     done
4446 }
4447
4448 msvc_flags(){
4449     msvc_common_flags "$@"
4450     for flag; do
4451         case $flag in
4452             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4453                                        -wd4554 ;;
4454             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4455                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4456                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4457                                        -wd4307 \
4458                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4459         esac
4460     done
4461 }
4462
4463 icl_flags(){
4464     msvc_common_flags "$@"
4465     for flag; do
4466         case $flag in
4467             # Despite what Intel's documentation says -Wall, which is supported
4468             # on Windows, does enable remarks so disable them here.
4469             -Wall)                echo $flag -Qdiag-disable:remark ;;
4470             -std=c99)             echo -Qstd=c99 ;;
4471             -flto)                echo -ipo ;;
4472         esac
4473     done
4474 }
4475
4476 icc_flags(){
4477     for flag; do
4478         case $flag in
4479             -flto)                echo -ipo ;;
4480             *)                    echo $flag ;;
4481         esac
4482     done
4483 }
4484
4485 suncc_flags(){
4486     for flag; do
4487         case $flag in
4488             -march=*|-mcpu=*)
4489                 case "${flag#*=}" in
4490                     native)                   echo -xtarget=native       ;;
4491                     v9|niagara)               echo -xarch=sparc          ;;
4492                     ultrasparc)               echo -xarch=sparcvis       ;;
4493                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4494                     i586|pentium)             echo -xchip=pentium        ;;
4495                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4496                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4497                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4498                     pentium4*)          echo -xtarget=pentium4           ;;
4499                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4500                     *-sse3)             echo -xarch=sse3                 ;;
4501                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4502                     bonnell)                   echo -xarch=ssse3         ;;
4503                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4504                     westmere)                  echo -xtarget=westmere    ;;
4505                     silvermont)                echo -xarch=sse4_2        ;;
4506                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4507                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4508                                                echo -xarch=avx           ;;
4509                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4510                     btver1)                    echo -xarch=amdsse4a      ;;
4511                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4512                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4513                     k8|opteron|athlon64|athlon-fx)
4514                                                echo -xarch=sse2a         ;;
4515                     athlon*)                   echo -xarch=pentium_proa  ;;
4516                 esac
4517                 ;;
4518             -std=c99)             echo -xc99              ;;
4519             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4520             -fPIC)                echo -KPIC -xcode=pic32 ;;
4521             -W*,*)                echo $flag              ;;
4522             -f*-*|-W*|-mimpure-text)                      ;;
4523             -shared)              echo -G                 ;;
4524             *)                    echo $flag              ;;
4525         esac
4526     done
4527 }
4528
4529 probe_cc(){
4530     pfx=$1
4531     _cc=$2
4532     first=$3
4533
4534     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4535     unset _ld_o _ldflags _ld_lib _ld_path
4536     unset _depflags _DEPCMD _DEPFLAGS
4537     _flags_filter=echo
4538
4539     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4540         true # no-op to avoid reading stdin in following checks
4541     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4542         _type=llvm_gcc
4543         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4544         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4545         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4546         _cflags_speed='-O3'
4547         _cflags_size='-Os'
4548     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4549         _type=gcc
4550         gcc_version=$($_cc --version | head -n1)
4551         gcc_basever=$($_cc -dumpversion)
4552         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4553         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4554         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4555         case $gcc_basever in
4556             2) ;;
4557             2.*) ;;
4558             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4559         esac
4560         if [ "$first" = true ]; then
4561             case $gcc_basever in
4562                 4.2*)
4563                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4564             esac
4565         fi
4566         _cflags_speed='-O3'
4567         _cflags_size='-Os'
4568     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4569         _type=icc
4570         _ident=$($_cc --version | head -n1)
4571         _depflags='-MMD'
4572         _cflags_speed='-O3'
4573         _cflags_size='-Os'
4574         _cflags_noopt='-O1'
4575         _flags_filter=icc_flags
4576     elif $_cc -v 2>&1 | grep -q xlc; then
4577         _type=xlc
4578         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4579         _cflags_speed='-O5'
4580         _cflags_size='-O5 -qcompact'
4581     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4582         test -d "$sysroot" || die "No valid sysroot specified."
4583         _type=armcc
4584         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4585         armcc_conf="$PWD/armcc.conf"
4586         $_cc --arm_linux_configure                 \
4587              --arm_linux_config_file="$armcc_conf" \
4588              --configure_sysroot="$sysroot"        \
4589              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4590              die "Error creating armcc configuration file."
4591         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4592         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4593         as_default="${cross_prefix}gcc"
4594         _depflags='-MMD'
4595         _cflags_speed='-O3'
4596         _cflags_size='-Os'
4597     elif $_cc -v 2>&1 | grep -q clang && ! $_cc -? > /dev/null 2>&1; then
4598         _type=clang
4599         _ident=$($_cc --version 2>/dev/null | head -n1)
4600         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4601         _cflags_speed='-O3'
4602         _cflags_size='-Oz'
4603     elif $_cc -V 2>&1 | grep -q Sun; then
4604         _type=suncc
4605         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4606         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4607         _DEPFLAGS='-xM1 -xc99'
4608         _ldflags='-std=c99'
4609         _cflags_speed='-O5'
4610         _cflags_size='-O5 -xspace'
4611         _flags_filter=suncc_flags
4612     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4613         _type=pathscale
4614         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4615         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4616         _cflags_speed='-O2'
4617         _cflags_size='-Os'
4618         _flags_filter='filter_out -Wdisabled-optimization'
4619     elif $_cc -v 2>&1 | grep -q Open64; then
4620         _type=open64
4621         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4622         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4623         _cflags_speed='-O2'
4624         _cflags_size='-Os'
4625         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4626     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4627         _type=armasm
4628         _ident=$($_cc | head -n1)
4629         # 4509: "This form of conditional instruction is deprecated"
4630         _flags="-nologo -ignore 4509"
4631         _flags_filter=armasm_flags
4632     elif $_cc 2>&1 | grep -q Intel; then
4633         _type=icl
4634         _ident=$($_cc 2>&1 | head -n1)
4635         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4636         # Not only is O3 broken on 13.x+ but it is slower on all previous
4637         # versions (tested) as well.
4638         _cflags_speed="-O2"
4639         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4640         if $_cc 2>&1 | grep -q Linker; then
4641             _ld_o='-out:$@'
4642         else
4643             _ld_o='-Fe$@'
4644         fi
4645         _cc_o='-Fo$@'
4646         _cc_e='-P'
4647         _flags_filter=icl_flags
4648         _ld_lib='lib%.a'
4649         _ld_path='-libpath:'
4650         # -Qdiag-error to make icl error when seeing certain unknown arguments
4651         _flags='-nologo -Qdiag-error:4044,10157'
4652         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4653         # with MSVC which enables it by default.
4654         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4655         disable stripping
4656     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4657         # lld can emulate multiple different linkers; in ms link.exe mode,
4658         # the -? parameter gives the help output which contains an identifyable
4659         # string, while it gives an error in other modes.
4660         _type=lld-link
4661         # The link.exe mode doesn't have a switch for getting the version,
4662         # but we can force it back to gnu mode and get the version from there.
4663         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4664         _ld_o='-out:$@'
4665         _flags_filter=msvc_flags
4666         _ld_lib='lib%.a'
4667         _ld_path='-libpath:'
4668     elif $_cc -nologo- 2>&1 | grep -q Microsoft || { $_cc -v 2>&1 | grep -q clang && $_cc -? > /dev/null 2>&1; }; then
4669         _type=msvc
4670         if $_cc -nologo- 2>&1 | grep -q Microsoft; then
4671             _ident=$($_cc 2>&1 | head -n1 | tr -d '\r')
4672         else
4673             _ident=$($_cc --version 2>/dev/null | head -n1 | tr -d '\r')
4674         fi
4675         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4676         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4677         _cflags_speed="-O2"
4678         _cflags_size="-O1"
4679         _cflags_noopt="-O1"
4680         if $_cc -nologo- 2>&1 | grep -q Linker; then
4681             _ld_o='-out:$@'
4682         else
4683             _ld_o='-Fe$@'
4684         fi
4685         _cc_o='-Fo$@'
4686         _cc_e='-P -Fi$@'
4687         _flags_filter=msvc_flags
4688         _ld_lib='lib%.a'
4689         _ld_path='-libpath:'
4690         _flags='-nologo'
4691         disable stripping
4692     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4693         _type=cparser
4694         _ident=$($_cc --version | head -n1)
4695         _depflags='-MMD'
4696         _cflags_speed='-O4'
4697         _cflags_size='-O2'
4698         _flags_filter=cparser_flags
4699     fi
4700
4701     eval ${pfx}_type=\$_type
4702     eval ${pfx}_ident=\$_ident
4703 }
4704
4705 set_ccvars(){
4706     eval ${1}_C=\${_cc_c-\${${1}_C}}
4707     eval ${1}_E=\${_cc_e-\${${1}_E}}
4708     eval ${1}_O=\${_cc_o-\${${1}_O}}
4709
4710     if [ -n "$_depflags" ]; then
4711         eval ${1}_DEPFLAGS=\$_depflags
4712     else
4713         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4714         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4715         eval DEP${1}FLAGS=\$_flags
4716     fi
4717 }
4718
4719 probe_cc cc "$cc" "true"
4720 cflags_filter=$_flags_filter
4721 cflags_speed=$_cflags_speed
4722 cflags_size=$_cflags_size
4723 cflags_noopt=$_cflags_noopt
4724 add_cflags $_flags $_cflags
4725 cc_ldflags=$_ldflags
4726 set_ccvars CC
4727 set_ccvars CXX
4728
4729 probe_cc hostcc "$host_cc"
4730 host_cflags_filter=$_flags_filter
4731 host_cflags_speed=$_cflags_speed
4732 add_host_cflags  $_flags $_cflags
4733 set_ccvars HOSTCC
4734
4735 test -n "$cc_type" && enable $cc_type ||
4736     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4737
4738 : ${as_default:=$cc}
4739 : ${objcc_default:=$cc}
4740 : ${dep_cc_default:=$cc}
4741 : ${ld_default:=$cc}
4742 : ${host_ld_default:=$host_cc}
4743 set_default ar as objcc dep_cc ld ln_s host_ld windres
4744
4745 probe_cc as "$as"
4746 asflags_filter=$_flags_filter
4747 add_asflags $_flags $_cflags
4748 set_ccvars AS
4749
4750 probe_cc objcc "$objcc"
4751 objcflags_filter=$_flags_filter
4752 add_objcflags $_flags $_cflags
4753 set_ccvars OBJC
4754
4755 probe_cc ld "$ld"
4756 ldflags_filter=$_flags_filter
4757 add_ldflags $_flags $_ldflags
4758 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4759 LD_O=${_ld_o-$LD_O}
4760 LD_LIB=${_ld_lib-$LD_LIB}
4761 LD_PATH=${_ld_path-$LD_PATH}
4762
4763 probe_cc hostld "$host_ld"
4764 host_ldflags_filter=$_flags_filter
4765 add_host_ldflags $_flags $_ldflags
4766 HOSTLD_O=${_ld_o-$HOSTLD_O}
4767
4768 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4769     probe_cc depcc "$dep_cc"
4770     CCDEP=${_DEPCMD:-$DEPCMD}
4771     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4772     DEPCCFLAGS=$_flags
4773 fi
4774
4775 if $ar 2>&1 | grep -q Microsoft; then
4776     arflags="-nologo"
4777     ar_o='-out:$@'
4778 elif $ar 2>&1 | grep -q "\[D\] "; then
4779     arflags="rcD"
4780     ar_o='$@'
4781 else
4782     arflags="rc"
4783     ar_o='$@'
4784 fi
4785
4786 add_cflags $extra_cflags
4787 add_cxxflags $extra_cxxflags
4788 add_objcflags $extra_objcflags
4789 add_asflags $extra_cflags
4790
4791 if test -n "$sysroot"; then
4792     case "$cc_type" in
4793         gcc|llvm_gcc|clang)
4794             add_cppflags --sysroot="$sysroot"
4795             add_ldflags --sysroot="$sysroot"
4796         ;;
4797     esac
4798 fi
4799
4800 if test "$cpu" = host; then
4801     enabled cross_compile &&
4802         warn "--cpu=host makes no sense when cross-compiling."
4803
4804     case "$cc_type" in
4805         gcc|llvm_gcc)
4806             check_native(){
4807                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4808                 sed -n "/cc1.*$1=/{
4809                             s/.*$1=\\([^ ]*\\).*/\\1/
4810                             p
4811                             q
4812                         }" $TMPE
4813             }
4814             cpu=$(check_native -march || check_native -mcpu)
4815         ;;
4816         clang)
4817             check_native(){
4818                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4819                 sed -n "/cc1.*-target-cpu /{
4820                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4821                             p
4822                             q
4823                         }" $TMPE
4824             }
4825             cpu=$(check_native -march)
4826         ;;
4827     esac
4828
4829     test "${cpu:-host}" = host &&
4830         die "--cpu=host not supported with compiler $cc"
4831 fi
4832
4833 # Deal with common $arch aliases
4834 case "$arch" in
4835     aarch64|arm64)
4836         arch="aarch64"
4837     ;;
4838     arm*|iPad*|iPhone*)
4839         arch="arm"
4840     ;;
4841     mips*|IP*)
4842         case "$arch" in
4843         *el)
4844             add_cppflags -EL
4845             add_ldflags -EL
4846         ;;
4847         *eb)
4848             add_cppflags -EB
4849             add_ldflags -EB
4850         ;;
4851         esac
4852         arch="mips"
4853     ;;
4854     parisc*|hppa*)
4855         arch="parisc"
4856     ;;
4857     "Power Macintosh"|ppc*|powerpc*)
4858         arch="ppc"
4859     ;;
4860     s390|s390x)
4861         arch="s390"
4862     ;;
4863     sh4|sh)
4864         arch="sh4"
4865     ;;
4866     sun4*|sparc*)
4867         arch="sparc"
4868     ;;
4869     tilegx|tile-gx)
4870         arch="tilegx"
4871     ;;
4872     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4873         arch="x86"
4874     ;;
4875 esac
4876
4877 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4878 enable $arch
4879
4880 # Add processor-specific flags
4881 if enabled aarch64; then
4882
4883     case $cpu in
4884         armv*)
4885             cpuflags="-march=$cpu"
4886         ;;
4887         *)
4888             cpuflags="-mcpu=$cpu"
4889         ;;
4890     esac
4891
4892 elif enabled alpha; then
4893
4894     cpuflags="-mcpu=$cpu"
4895
4896 elif enabled arm; then
4897
4898     check_arm_arch() {
4899         test_cpp_condition stddef.h \
4900             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4901             $cpuflags
4902     }
4903
4904     probe_arm_arch() {
4905         if   check_arm_arch 4;        then echo armv4
4906         elif check_arm_arch 4T;       then echo armv4t
4907         elif check_arm_arch 5;        then echo armv5
4908         elif check_arm_arch 5E;       then echo armv5e
4909         elif check_arm_arch 5T;       then echo armv5t
4910         elif check_arm_arch 5TE;      then echo armv5te
4911         elif check_arm_arch 5TEJ;     then echo armv5te
4912         elif check_arm_arch 6;        then echo armv6
4913         elif check_arm_arch 6J;       then echo armv6j
4914         elif check_arm_arch 6K;       then echo armv6k
4915         elif check_arm_arch 6Z;       then echo armv6z
4916         elif check_arm_arch 6KZ;      then echo armv6zk
4917         elif check_arm_arch 6ZK;      then echo armv6zk
4918         elif check_arm_arch 6T2;      then echo armv6t2
4919         elif check_arm_arch 7;        then echo armv7
4920         elif check_arm_arch 7A  7_A;  then echo armv7-a
4921         elif check_arm_arch 7S;       then echo armv7-a
4922         elif check_arm_arch 7R  7_R;  then echo armv7-r
4923         elif check_arm_arch 7M  7_M;  then echo armv7-m
4924         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4925         elif check_arm_arch 8A  8_A;  then echo armv8-a
4926         fi
4927     }
4928
4929     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4930
4931     case $cpu in
4932         armv*)
4933             cpuflags="-march=$cpu"
4934             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4935         ;;
4936         *)
4937             cpuflags="-mcpu=$cpu"
4938             case $cpu in
4939                 cortex-a*)                               subarch=armv7a  ;;
4940                 cortex-r*)                               subarch=armv7r  ;;
4941                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4942                 arm11*)                                  subarch=armv6   ;;
4943                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4944                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4945                 *)                             subarch=$(probe_arm_arch) ;;
4946             esac
4947         ;;
4948     esac
4949
4950     case "$subarch" in
4951         armv5t*)    enable fast_clz                ;;
4952         armv[6-8]*)
4953             enable fast_clz
4954             disabled fast_unaligned || enable fast_unaligned
4955             ;;
4956     esac
4957
4958 elif enabled avr32; then
4959
4960     case $cpu in
4961         ap7[02]0[0-2])
4962             subarch="avr32_ap"
4963             cpuflags="-mpart=$cpu"
4964         ;;
4965         ap)
4966             subarch="avr32_ap"
4967             cpuflags="-march=$cpu"
4968         ;;
4969         uc3[ab]*)
4970             subarch="avr32_uc"
4971             cpuflags="-mcpu=$cpu"
4972         ;;
4973         uc)
4974             subarch="avr32_uc"
4975             cpuflags="-march=$cpu"
4976         ;;
4977     esac
4978
4979 elif enabled bfin; then
4980
4981     cpuflags="-mcpu=$cpu"
4982
4983 elif enabled mips; then
4984
4985     cpuflags="-march=$cpu"
4986
4987     if [ "$cpu" != "generic" ]; then
4988         disable mips32r2
4989         disable mips32r5
4990         disable mips64r2
4991         disable mips32r6
4992         disable mips64r6
4993         disable loongson2
4994         disable loongson3
4995
4996         case $cpu in
4997             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4998                 enable mips32r2
4999                 disable msa
5000             ;;
5001             p5600|i6400|p6600)
5002                 disable mipsdsp
5003                 disable mipsdspr2
5004             ;;
5005             loongson*)
5006                 enable loongson2
5007                 enable loongson3
5008                 enable local_aligned
5009                 enable simd_align_16
5010                 enable fast_64bit
5011                 enable fast_clz
5012                 enable fast_cmov
5013                 enable fast_unaligned
5014                 disable aligned_stack
5015                 disable mipsdsp
5016                 disable mipsdspr2
5017                 # When gcc version less than 5.3.0, add -fno-expensive-optimizations flag.
5018                 if [ $cc == gcc ]; then
5019                     gcc_version=$(gcc -dumpversion)
5020                     if [ "$(echo "$gcc_version 5.3.0" | tr " " "\n" | sort -rV | head -n 1)" == "$gcc_version" ]; then
5021                         expensive_optimization_flag=""
5022                     else
5023                         expensive_optimization_flag="-fno-expensive-optimizations"
5024                     fi
5025                 fi
5026                 case $cpu in
5027                     loongson3*)
5028                         cpuflags="-march=loongson3a -mhard-float $expensive_optimization_flag"
5029                     ;;
5030                     loongson2e)
5031                         cpuflags="-march=loongson2e -mhard-float $expensive_optimization_flag"
5032                     ;;
5033                     loongson2f)
5034                         cpuflags="-march=loongson2f -mhard-float $expensive_optimization_flag"
5035                     ;;
5036                 esac
5037             ;;
5038             *)
5039                 # Unknown CPU. Disable everything.
5040                 warn "unknown CPU. Disabling all MIPS optimizations."
5041                 disable mipsfpu
5042                 disable mipsdsp
5043                 disable mipsdspr2
5044                 disable msa
5045                 disable mmi
5046             ;;
5047         esac
5048
5049         case $cpu in
5050             24kc)
5051                 disable mipsfpu
5052                 disable mipsdsp
5053                 disable mipsdspr2
5054             ;;
5055             24kf*)
5056                 disable mipsdsp
5057                 disable mipsdspr2
5058             ;;
5059             24kec|34kc|1004kc)
5060                 disable mipsfpu
5061                 disable mipsdspr2
5062             ;;
5063             24kef*|34kf*|1004kf*)
5064                 disable mipsdspr2
5065             ;;
5066             74kc)
5067                 disable mipsfpu
5068             ;;
5069             p5600)
5070                 enable mips32r5
5071                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
5072             ;;
5073             i6400)
5074                 enable mips64r6
5075                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
5076             ;;
5077             p6600)
5078                 enable mips64r6
5079                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
5080             ;;
5081         esac
5082     else
5083         # We do not disable anything. Is up to the user to disable the unwanted features.
5084         warn 'generic cpu selected'
5085     fi
5086
5087 elif enabled ppc; then
5088
5089     disable ldbrx
5090
5091     case $(tolower $cpu) in
5092         601|ppc601|powerpc601)
5093             cpuflags="-mcpu=601"
5094             disable altivec
5095         ;;
5096         603*|ppc603*|powerpc603*)
5097             cpuflags="-mcpu=603"
5098             disable altivec
5099         ;;
5100         604*|ppc604*|powerpc604*)
5101             cpuflags="-mcpu=604"
5102             disable altivec
5103         ;;
5104         g3|75*|ppc75*|powerpc75*)
5105             cpuflags="-mcpu=750"
5106             disable altivec
5107         ;;
5108         g4|745*|ppc745*|powerpc745*)
5109             cpuflags="-mcpu=7450"
5110             disable vsx
5111         ;;
5112         74*|ppc74*|powerpc74*)
5113             cpuflags="-mcpu=7400"
5114             disable vsx
5115         ;;
5116         g5|970|ppc970|powerpc970)
5117             cpuflags="-mcpu=970"
5118             disable vsx
5119         ;;
5120         power[3-6]*)
5121             cpuflags="-mcpu=$cpu"
5122             disable vsx
5123         ;;
5124         power[7-8]*)
5125             cpuflags="-mcpu=$cpu"
5126         ;;
5127         cell)
5128             cpuflags="-mcpu=cell"
5129             enable ldbrx
5130             disable vsx
5131         ;;
5132         e500mc)
5133             cpuflags="-mcpu=e500mc"
5134             disable altivec
5135         ;;
5136         e500v2)
5137             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
5138             disable altivec
5139             disable dcbzl
5140         ;;
5141         e500)
5142             cpuflags="-mcpu=8540 -mhard-float"
5143             disable altivec
5144             disable dcbzl
5145         ;;
5146     esac
5147
5148 elif enabled sparc; then
5149
5150     case $cpu in
5151         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
5152             cpuflags="-mcpu=$cpu"
5153         ;;
5154         ultrasparc*|niagara[234])
5155             cpuflags="-mcpu=$cpu"
5156         ;;
5157     esac
5158
5159 elif enabled x86; then
5160
5161     case $cpu in
5162         i[345]86|pentium)
5163             cpuflags="-march=$cpu"
5164             disable i686
5165             disable mmx
5166         ;;
5167         # targets that do NOT support nopl and conditional mov (cmov)
5168         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
5169             cpuflags="-march=$cpu"
5170             disable i686
5171         ;;
5172         # targets that do support nopl and conditional mov (cmov)
5173         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
5174         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
5175         |amdfam10|barcelona|b[dt]ver*|znver*)
5176             cpuflags="-march=$cpu"
5177             enable i686
5178             enable fast_cmov
5179         ;;
5180         # targets that do support conditional mov but on which it's slow
5181         pentium4|pentium4m|prescott|nocona)
5182             cpuflags="-march=$cpu"
5183             enable i686
5184             disable fast_cmov
5185         ;;
5186     esac
5187
5188 fi
5189
5190 if [ "$cpu" != generic ]; then
5191     add_cflags  $cpuflags
5192     add_asflags $cpuflags
5193     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
5194 fi
5195
5196 # compiler sanity check
5197 test_exec <<EOF
5198 int main(void){ return 0; }
5199 EOF
5200 if test "$?" != 0; then
5201     echo "$cc is unable to create an executable file."
5202     if test -z "$cross_prefix" && ! enabled cross_compile ; then
5203         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
5204         echo "Only do this if you know what cross compiling means."
5205     fi
5206     die "C compiler test failed."
5207 fi
5208
5209 add_cppflags -D_ISOC99_SOURCE
5210 add_cxxflags -D__STDC_CONSTANT_MACROS
5211 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
5212
5213 # some compilers silently accept -std=c11, so we also need to check that the
5214 # version macro is defined properly
5215 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
5216     add_cflags -std=c11 ||
5217     check_cflags -std=c99
5218
5219 check_cppflags -D_FILE_OFFSET_BITS=64
5220 check_cppflags -D_LARGEFILE_SOURCE
5221
5222 add_host_cppflags -D_ISOC99_SOURCE
5223 check_host_cflags -std=c99
5224 check_host_cflags -Wall
5225 check_host_cflags $host_cflags_speed
5226
5227 check_64bit(){
5228     arch32=$1
5229     arch64=$2
5230     expr=${3:-'sizeof(void *) > 4'}
5231     test_code cc "" "int test[2*($expr) - 1]" &&
5232         subarch=$arch64 || subarch=$arch32
5233     enable $subarch
5234 }
5235
5236 case "$arch" in
5237     aarch64|alpha|ia64)
5238         enabled shared && enable_weak pic
5239     ;;
5240     mips)
5241         check_64bit mips mips64 '_MIPS_SIM > 1'
5242         enabled shared && enable_weak pic
5243     ;;
5244     parisc)
5245         check_64bit parisc parisc64
5246         enabled shared && enable_weak pic
5247     ;;
5248     ppc)
5249         check_64bit ppc ppc64
5250         enabled shared && enable_weak pic
5251     ;;
5252     s390)
5253         check_64bit s390 s390x
5254         enabled shared && enable_weak pic
5255     ;;
5256     sparc)
5257         check_64bit sparc sparc64
5258         enabled shared && enable_weak pic
5259     ;;
5260     x86)
5261         check_64bit x86_32 x86_64
5262         # Treat x32 as x64 for now. Note it also needs pic if shared
5263         test "$subarch" = "x86_32" && test_cpp_condition stddef.h 'defined(__x86_64__)' &&
5264             subarch=x86_64 && enable x86_64 && disable x86_32
5265         if enabled x86_64; then
5266             enabled shared && enable_weak pic
5267             objformat=elf64
5268         fi
5269     ;;
5270 esac
5271
5272 # OS specific
5273 case $target_os in
5274     aix)
5275         SHFLAGS=-shared
5276         add_cppflags '-I\$(SRC_PATH)/compat/aix'
5277         enabled shared && add_ldflags -Wl,-brtl
5278         arflags='-Xany -r -c'
5279         striptype=""
5280         ;;
5281     android)
5282         disable symver
5283         enable section_data_rel_ro
5284         add_cflags -fPIE
5285         add_ldexeflags -fPIE -pie
5286         SLIB_INSTALL_NAME='$(SLIBNAME)'
5287         SLIB_INSTALL_LINKS=
5288         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
5289         ;;
5290     haiku)
5291         prefix_default="/boot/common"
5292         network_extralibs="-lnetwork"
5293         host_extralibs=
5294         ;;
5295     sunos)
5296         SHFLAGS='-shared -Wl,-h,$$(@F)'
5297         enabled x86 && append SHFLAGS -mimpure-text
5298         network_extralibs="-lsocket -lnsl"
5299         add_cppflags -D__EXTENSIONS__
5300         # When using suncc to build, the Solaris linker will mark
5301         # an executable with each instruction set encountered by
5302         # the Solaris assembler.  As our libraries contain their own
5303         # guards for processor-specific code, instead suppress
5304         # generation of the HWCAPS ELF section on Solaris x86 only.
5305         enabled_all suncc x86 &&
5306             echo "hwcap_1 = OVERRIDE;" > mapfile &&
5307             add_ldflags -Wl,-M,mapfile
5308         nm_default='nm -P -g'
5309         striptype=""
5310         version_script='-M'
5311         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
5312         ;;
5313     netbsd)
5314         disable symver
5315         oss_indev_extralibs="-lossaudio"
5316         oss_outdev_extralibs="-lossaudio"
5317         enabled gcc || check_ldflags -Wl,-zmuldefs
5318         ;;
5319     openbsd|bitrig)
5320         disable symver
5321         enable section_data_rel_ro
5322         striptype=""
5323         SHFLAGS='-shared'
5324         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
5325         SLIB_INSTALL_LINKS=
5326         oss_indev_extralibs="-lossaudio"
5327         oss_outdev_extralibs="-lossaudio"
5328         ;;
5329     dragonfly)
5330         disable symver
5331         ;;
5332     freebsd)
5333         ;;
5334     bsd/os)
5335         add_extralibs -lpoll -lgnugetopt
5336         strip="strip -d"
5337         ;;
5338     darwin)
5339         enabled ppc && add_asflags -force_cpusubtype_ALL
5340         install_name_dir_default='$(SHLIBDIR)'
5341         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
5342         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
5343         strip="${strip} -x"
5344         add_ldflags -Wl,-dynamic,-search_paths_first
5345         check_cflags -Werror=partial-availability
5346         SLIBSUF=".dylib"
5347         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
5348         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
5349         enabled x86_64 && objformat="macho64" || objformat="macho32"
5350         enabled_any pic shared x86_64 ||
5351             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
5352         check_headers dispatch/dispatch.h &&
5353             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
5354         if test -n "$sysroot"; then
5355             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
5356             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
5357         fi
5358         version_script='-exported_symbols_list'
5359         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
5360         ;;
5361     msys*)
5362         die "Native MSYS builds are discouraged, please use the MINGW environment."
5363         ;;
5364     mingw32*|mingw64*)
5365         target_os=mingw32
5366         LIBTARGET=i386
5367         if enabled x86_64; then
5368             LIBTARGET="i386:x86-64"
5369         elif enabled arm; then
5370             LIBTARGET="arm"
5371         elif enabled aarch64; then
5372             LIBTARGET="arm64"
5373         fi
5374         if enabled shared; then
5375             # Cannot build both shared and static libs when using dllimport.
5376             disable static
5377         fi
5378         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5379         enabled x86_32 && check_ldflags -Wl,--large-address-aware
5380         shlibdir_default="$bindir_default"
5381         SLIBPREF=""
5382         SLIBSUF=".dll"
5383         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5384         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5385         if test_cmd lib.exe -list; then
5386             SLIB_EXTRA_CMD=-'lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5387             if enabled x86_64; then
5388                 LIBTARGET=x64
5389             fi
5390         else
5391             SLIB_EXTRA_CMD=-'$(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
5392         fi
5393         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5394         SLIB_INSTALL_LINKS=
5395         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5396         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5397         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5398         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--disable-auto-image-base $$(@:$(SLIBSUF)=.def)'
5399         enabled x86_64 && objformat="win64" || objformat="win32"
5400         dlltool="${cross_prefix}dlltool"
5401         ranlib=:
5402         enable dos_paths
5403         check_ldflags -Wl,--nxcompat,--dynamicbase
5404         # Lets work around some stupidity in binutils.
5405         # ld will strip relocations from executables even though we need them
5406         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
5407         # however ld then forgets what the entry point should be (oops) so we
5408         # have to manually (re)set it.
5409         if enabled x86_32; then
5410             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
5411         elif enabled x86_64; then
5412             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
5413             check_ldflags -Wl,--high-entropy-va # binutils 2.25
5414             # Set image base >4GB for extra entropy with HEASLR
5415             add_ldexeflags -Wl,--image-base,0x140000000
5416             append SHFLAGS -Wl,--image-base,0x180000000
5417         fi
5418         ;;
5419     win32|win64)
5420         disable symver
5421         if enabled shared; then
5422             # Link to the import library instead of the normal static library
5423             # for shared libs.
5424             LD_LIB='%.lib'
5425             # Cannot build both shared and static libs with MSVC or icl.
5426             disable static
5427         fi
5428         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
5429         shlibdir_default="$bindir_default"
5430         SLIBPREF=""
5431         SLIBSUF=".dll"
5432         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5433         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5434         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5435         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5436         SLIB_INSTALL_LINKS=
5437         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5438         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5439         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5440         enabled x86_64 && objformat="win64" || objformat="win32"
5441         ranlib=:
5442         enable dos_paths
5443         ;;
5444     cygwin*)
5445         target_os=cygwin
5446         shlibdir_default="$bindir_default"
5447         SLIBPREF="cyg"
5448         SLIBSUF=".dll"
5449         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5450         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5451         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5452         SLIB_INSTALL_LINKS=
5453         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5454         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5455         enabled x86_64 && objformat="win64" || objformat="win32"
5456         enable dos_paths
5457         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5458         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5459         ;;
5460     *-dos|freedos|opendos)
5461         network_extralibs="-lsocket"
5462         objformat="coff"
5463         enable dos_paths
5464         ;;
5465     linux)
5466         enable section_data_rel_ro
5467         enabled_any arm aarch64 && enable_weak linux_perf
5468         ;;
5469     irix*)
5470         target_os=irix
5471         ranlib="echo ignoring ranlib"
5472         ;;
5473     os/2*)
5474         strip="lxlite -CS"
5475         striptype=""
5476         objformat="aout"
5477         add_cppflags -D_GNU_SOURCE
5478         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5479         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5480         LIBSUF="_s.a"
5481         SLIBPREF=""
5482         SLIBSUF=".dll"
5483         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5484         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5485         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5486             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5487             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5488             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5489             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5490         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5491             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5492         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5493         SLIB_INSTALL_LINKS=
5494         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5495         enable dos_paths
5496         enable_weak os2threads
5497         ;;
5498     gnu/kfreebsd)
5499         add_cppflags -D_BSD_SOURCE
5500         ;;
5501     gnu)
5502         ;;
5503     qnx)
5504         add_cppflags -D_QNX_SOURCE
5505         network_extralibs="-lsocket"
5506         ;;
5507     symbian)
5508         SLIBSUF=".dll"
5509         enable dos_paths
5510         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5511         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5512         add_ldflags -Wl,--target1-abs,--no-undefined \
5513                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5514                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5515         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5516                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5517                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5518         ;;
5519     minix)
5520         ;;
5521     none)
5522         ;;
5523     *)
5524         die "Unknown OS '$target_os'."
5525         ;;
5526 esac
5527
5528 # test if creating links works
5529 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5530 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5531 mkdir "$link_dest"
5532 $ln_s "$link_dest" "$link_name"
5533 touch "$link_dest/test_file"
5534 if [ "$source_path" != "." ] && [ "$source_path" != "src" ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5535     # create link to source path
5536     [ -e src ] && rm src
5537     $ln_s "$source_path" src
5538     source_link=src
5539 else
5540     # creating directory links doesn't work
5541     # fall back to using the full source path
5542     source_link="$source_path"
5543 fi
5544 # cleanup
5545 rm -r "$link_dest"
5546 rm -r "$link_name"
5547
5548 # determine libc flavour
5549
5550 probe_libc(){
5551     pfx=$1
5552     pfx_no_=${pfx%_}
5553     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5554     if test_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5555         eval ${pfx}libc_type=uclibc
5556         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5557     elif test_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5558         eval ${pfx}libc_type=glibc
5559         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5560     # MinGW headers can be installed on Cygwin, so check for newlib first.
5561     elif test_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5562         eval ${pfx}libc_type=newlib
5563         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5564     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5565     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5566         eval ${pfx}libc_type=mingw64
5567         if test_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5568             add_compat msvcrt/snprintf.o
5569             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5570         fi
5571         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5572         eval test \$${pfx_no_}cc_type = "gcc" &&
5573             add_${pfx}cppflags -D__printf__=__gnu_printf__
5574         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5575             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5576         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5577     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5578          test_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5579         eval ${pfx}libc_type=mingw32
5580         test_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5581             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5582             die "ERROR: MinGW32 runtime version must be >= 3.15."
5583         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5584         test_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5585             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5586         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5587             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5588         eval test \$${pfx_no_}cc_type = "gcc" &&
5589             add_${pfx}cppflags -D__printf__=__gnu_printf__
5590         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5591     elif test_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5592         eval ${pfx}libc_type=msvcrt
5593         if test_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5594             if [ "$pfx" = host_ ]; then
5595                 add_host_cppflags -Dsnprintf=_snprintf
5596             else
5597                 add_compat strtod.o strtod=avpriv_strtod
5598                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5599                                              _snprintf=avpriv_snprintf  \
5600                                              vsnprintf=avpriv_vsnprintf
5601             fi
5602         fi
5603         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5604         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5605         # 0x601 by default unless something else is set by the user.
5606         # This can easily lead to us detecting functions only present
5607         # in such new versions and producing binaries requiring windows 7.0.
5608         # Therefore explicitly set the default to Vista unless the user has
5609         # set something else on the command line.
5610         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5611         # family. For these cases, configure is free to use any functions
5612         # found in the SDK headers by default. (Alternatively, we could force
5613         # _WIN32_WINNT to 0x0602 in that case.)
5614         test_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5615             { test_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0600; }
5616 #ifdef WINAPI_FAMILY
5617 #include <winapifamily.h>
5618 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5619 #error not desktop
5620 #endif
5621 #endif
5622 EOF
5623         if [ "$pfx" = "" ]; then
5624             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5625             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5626         fi
5627     elif test_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5628         eval ${pfx}libc_type=klibc
5629     elif test_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5630         eval ${pfx}libc_type=bionic
5631     elif test_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5632         eval ${pfx}libc_type=solaris
5633         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5634     elif test_${pfx}cpp_condition sys/version.h "defined __DJGPP__"; then
5635         eval ${pfx}libc_type=djgpp
5636         add_cppflags -U__STRICT_ANSI__
5637         add_cflags "-include $source_path/compat/djgpp/math.h"
5638         add_compat djgpp/math.o
5639     fi
5640     test_${pfx}cc <<EOF
5641 #include <time.h>
5642 void *v = localtime_r;
5643 EOF
5644 test "$?" != 0 && test_${pfx}cc -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 <<EOF && add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5645 #include <time.h>
5646 void *v = localtime_r;
5647 EOF
5648
5649     eval test -n "\${${pfx}libc_type}" && enable ${pfx}libc_${libc_type}
5650 }
5651
5652 probe_libc
5653 probe_libc host_
5654
5655 # hacks for compiler/libc/os combinations
5656
5657 case $libc_type in
5658     bionic)
5659         add_compat strtod.o strtod=avpriv_strtod
5660         ;;
5661 esac
5662
5663 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5664     add_cppflags '-I\$(SRC_PATH)/compat/float'
5665
5666 test_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5667
5668 set_default libdir
5669 : ${shlibdir_default:="$libdir"}
5670 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5671
5672 set_default $PATHS_LIST
5673 set_default nm
5674
5675 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5676
5677 enable_weak_pic() {
5678     disabled pic && return
5679     enable pic
5680     add_cppflags -DPIC
5681     case "$target_os" in
5682     mingw*|cygwin*|win*)
5683         ;;
5684     *)
5685         add_cflags -fPIC
5686         add_asflags -fPIC
5687         ;;
5688     esac
5689 }
5690
5691 enabled pic && enable_weak_pic
5692
5693 test_cc <<EOF || die "Symbol mangling check failed."
5694 int ff_extern;
5695 EOF
5696 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5697 extern_prefix=${sym%%ff_extern*}
5698
5699 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
5700
5701 for restrict_keyword in restrict __restrict__ __restrict ""; do
5702     test_code cc "" "char * $restrict_keyword p" && break
5703 done
5704
5705 check_cc pragma_deprecated "" '_Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"")'
5706
5707 # The global variable ensures the bits appear unchanged in the object file.
5708 test_cc <<EOF || die "endian test failed"
5709 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5710 EOF
5711 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5712
5713 check_cc const_nan math.h "struct { double d; } static const bar[] = { { NAN } }"
5714
5715 if ! enabled ppc64 || enabled bigendian; then
5716     disable vsx
5717 fi
5718
5719 check_gas() {
5720     log "check_gas using '$as' as AS"
5721     # :vararg is used on aarch64, arm and ppc altivec
5722     check_as vararg "
5723 .macro m n, y:vararg=0
5724 \n: .int \y
5725 .endm
5726 m x" || return 1
5727     # .altmacro is only used in arm asm
5728     ! enabled arm || check_as gnu_as ".altmacro"
5729 }
5730
5731 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5732     nogas=:
5733     enabled_any arm aarch64 && nogas=die
5734     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5735     as_noop=-v
5736
5737     case $as_type in
5738         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5739         gcc)  gaspp_as_type=gas ;;
5740         *)    gaspp_as_type=$as_type ;;
5741     esac
5742
5743     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5744
5745     test "${as#*gas-preprocessor.pl}" != "$as" ||
5746     test_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5747         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5748
5749     if ! check_gas ; then
5750         as=${gas:=$as}
5751         check_gas || \
5752             $nogas "GNU assembler not found, install/update gas-preprocessor"
5753     fi
5754
5755     check_as as_func ".func test
5756                       .endfunc"
5757 fi
5758
5759 check_inline_asm inline_asm_labels '"1:\n"'
5760
5761 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5762
5763 if enabled aarch64; then
5764     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5765     # internal assembler in clang 3.3 does not support this instruction
5766     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5767     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5768
5769     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5770
5771 elif enabled alpha; then
5772
5773     check_cflags -mieee
5774
5775 elif enabled arm; then
5776
5777     enabled msvc && check_cpp_condition thumb stddef.h "defined _M_ARMT"
5778     test_cpp_condition stddef.h "defined __thumb__" && test_cc <<EOF && enable_weak thumb
5779 float func(float a, float b){ return a+b; }
5780 EOF
5781     enabled thumb && check_cflags -mthumb || check_cflags -marm
5782
5783     if check_cpp_condition vfp_args stddef.h "defined __ARM_PCS_VFP"; then
5784         :
5785     elif check_cpp_condition vfp_args stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5786         :
5787     elif ! test_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5788         case "${cross_prefix:-$cc}" in
5789             *hardfloat*) enable vfp_args; fpabi=vfp ;;
5790             *) check_ld "cc" vfp_args <<EOF && fpabi=vfp || fpabi=soft ;;
5791 __asm__ (".eabi_attribute 28, 1");
5792 int main(void) { return 0; }
5793 EOF
5794         esac
5795         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5796     fi
5797
5798     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5799     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5800     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5801     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5802     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5803     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5804     enabled setend  && check_insn setend  'setend be'
5805
5806     [ $target_os = linux ] || [ $target_os = android ] ||
5807         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5808             $ARCH_EXT_LIST_ARM
5809
5810     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5811
5812     check_as as_arch_directive ".arch armv7-a"
5813     check_as as_dn_directive   "ra .dn d0.i16"
5814     check_as as_fpu_directive  ".fpu neon"
5815
5816     # llvm's integrated assembler supports .object_arch from llvm 3.5
5817     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5818         check_as as_object_arch ".object_arch armv4"
5819
5820     # MS armasm fails to assemble our PIC constructs
5821     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5822
5823 elif enabled mips; then
5824
5825     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5826     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5827     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5828
5829     # Enable minimum ISA based on selected options
5830     if enabled mips64; then
5831         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5832         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5833         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5834     else
5835         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5836         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5837         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5838         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5839     fi
5840
5841     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5842     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5843     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_headers msa.h || disable msa
5844     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5845     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5846     enabled msa && enabled msa2 && check_inline_asm_flags msa2 '"nxbits.any.b $w0, $w0"' '-mmsa2' && check_headers msa2.h || disable msa2
5847
5848     if enabled bigendian && enabled msa; then
5849         disable msa
5850     fi
5851
5852 elif enabled parisc; then
5853
5854     if enabled gcc; then
5855         case $($cc -dumpversion) in
5856             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5857         esac
5858     fi
5859
5860 elif enabled ppc; then
5861
5862     enable local_aligned
5863
5864     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5865     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5866     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5867     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5868
5869     if enabled altivec; then
5870         check_cflags -maltivec -mabi=altivec
5871
5872         # check if our compiler supports Motorola AltiVec C API
5873         check_cc altivec altivec.h "vector signed int v1 = (vector signed int) { 0 };
5874                                     vector signed int v2 = (vector signed int) { 1 };
5875                                     v1 = vec_add(v1, v2);"
5876
5877         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5878     fi
5879
5880     if enabled vsx; then
5881         check_cflags -mvsx &&
5882         check_cc vsx altivec.h "int v[4] = { 0 };
5883                                 vector signed int v1 = vec_vsx_ld(0, v);"
5884     fi
5885
5886     if enabled power8; then
5887         check_cpp_condition power8 "altivec.h" "defined(_ARCH_PWR8)"
5888     fi
5889
5890 elif enabled x86; then
5891
5892     check_builtin rdtsc    intrin.h   "__rdtsc()"
5893     check_builtin mm_empty mmintrin.h "_mm_empty()"
5894
5895     enable local_aligned
5896
5897     # check whether EBP is available on x86
5898     # As 'i' is stored on the stack, this program will crash
5899     # if the base pointer is used to access it because the
5900     # base pointer is cleared in the inline assembly code.
5901     check_exec_crash <<EOF && enable ebp_available
5902 volatile int i=0;
5903 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5904 return i;
5905 EOF
5906
5907     # check whether EBX is available on x86
5908     check_inline_asm ebx_available '""::"b"(0)' &&
5909         check_inline_asm ebx_available '"":::"%ebx"'
5910
5911     # check whether xmm clobbers are supported
5912     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5913
5914     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5915         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5916
5917     # check whether binutils is new enough to compile SSSE3/MMXEXT
5918     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5919     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5920
5921     probe_x86asm(){
5922         x86asmexe_probe=$1
5923         if test_cmd $x86asmexe_probe -v; then
5924             x86asmexe=$x86asmexe_probe
5925             x86asm_type=nasm
5926             x86asm_debug="-g -F dwarf"
5927             X86ASMDEP=
5928             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5929         elif test_cmd $x86asmexe_probe --version; then
5930             x86asmexe=$x86asmexe_probe
5931             x86asm_type=yasm
5932             x86asm_debug="-g dwarf2"
5933             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
5934             X86ASM_DEPFLAGS=
5935         fi
5936         check_x86asm x86asm "movbe ecx, [5]"
5937     }
5938
5939     if ! disabled_any asm mmx x86asm; then
5940         disable x86asm
5941         for program in $x86asmexe nasm yasm; do
5942             probe_x86asm $program && break
5943         done
5944         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
5945         X86ASMFLAGS="-f $objformat"
5946         enabled pic               && append X86ASMFLAGS "-DPIC"
5947         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
5948         case "$objformat" in
5949             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
5950         esac
5951
5952         enabled avx512 && check_x86asm avx512_external "vmovdqa32 [eax]{k1}{z}, zmm0"
5953         enabled avx2   && check_x86asm avx2_external   "vextracti128 xmm0, ymm0, 0"
5954         enabled xop    && check_x86asm xop_external    "vpmacsdd xmm0, xmm1, xmm2, xmm3"
5955         enabled fma4   && check_x86asm fma4_external   "vfmaddps ymm0, ymm1, ymm2, ymm3"
5956         check_x86asm cpunop          "CPU amdnop"
5957     fi
5958
5959     case "$cpu" in
5960         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5961             disable fast_clz
5962         ;;
5963     esac
5964
5965 fi
5966
5967 check_cc intrinsics_neon arm_neon.h "int16x8_t test = vdupq_n_s16(0)"
5968
5969 check_ldflags -Wl,--as-needed
5970 check_ldflags -Wl,-z,noexecstack
5971
5972 if ! disabled network; then
5973     check_func getaddrinfo $network_extralibs
5974     check_func inet_aton $network_extralibs
5975
5976     check_type netdb.h "struct addrinfo"
5977     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5978     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5979     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5980     check_type poll.h "struct pollfd"
5981     check_type netinet/sctp.h "struct sctp_event_subscribe"
5982     check_struct "sys/socket.h" "struct msghdr" msg_flags
5983     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5984     check_type netinet/in.h "struct sockaddr_in6"
5985     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5986     check_type "sys/types.h sys/socket.h" socklen_t
5987
5988     # Prefer arpa/inet.h over winsock2
5989     if check_headers arpa/inet.h ; then
5990         check_func closesocket
5991     elif check_headers winsock2.h ; then
5992         check_func_headers winsock2.h closesocket -lws2 &&
5993             network_extralibs="-lws2" ||
5994         { check_func_headers winsock2.h closesocket -lws2_32 &&
5995             network_extralibs="-lws2_32"; } || disable winsock2_h network
5996         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5997
5998         check_type ws2tcpip.h socklen_t
5999         check_type ws2tcpip.h "struct addrinfo"
6000         check_type ws2tcpip.h "struct group_source_req"
6001         check_type ws2tcpip.h "struct ip_mreq_source"
6002         check_type ws2tcpip.h "struct ipv6_mreq"
6003         check_type winsock2.h "struct pollfd"
6004         check_struct winsock2.h "struct sockaddr" sa_len
6005         check_type ws2tcpip.h "struct sockaddr_in6"
6006         check_type ws2tcpip.h "struct sockaddr_storage"
6007     else
6008         disable network
6009     fi
6010 fi
6011
6012 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
6013 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
6014 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
6015 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
6016 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
6017 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
6018 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
6019
6020 case "$custom_allocator" in
6021     jemalloc)
6022         # jemalloc by default does not use a prefix
6023         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
6024     ;;
6025     tcmalloc)
6026         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
6027         malloc_prefix=tc_
6028     ;;
6029 esac
6030
6031 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
6032 check_func  ${malloc_prefix}memalign            && enable memalign
6033 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
6034
6035 check_func  access
6036 check_func_headers stdlib.h arc4random
6037 check_lib   clock_gettime time.h clock_gettime || check_lib clock_gettime time.h clock_gettime -lrt
6038 check_func  fcntl
6039 check_func  fork
6040 check_func  gethrtime
6041 check_func  getopt
6042 check_func  getrusage
6043 check_func  gettimeofday
6044 check_func  isatty
6045 check_func  mkstemp
6046 check_func  mmap
6047 check_func  mprotect
6048 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
6049 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
6050 check_func  sched_getaffinity
6051 check_func  setrlimit
6052 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
6053 check_func  strerror_r
6054 check_func  sysconf
6055 check_func  sysctl
6056 check_func  usleep
6057
6058 check_func_headers conio.h kbhit
6059 check_func_headers io.h setmode
6060 check_func_headers lzo/lzo1x.h lzo1x_999_compress
6061 check_func_headers mach/mach_time.h mach_absolute_time
6062 check_func_headers stdlib.h getenv
6063 check_func_headers sys/stat.h lstat
6064
6065 check_func_headers windows.h GetModuleHandle
6066 check_func_headers windows.h GetProcessAffinityMask
6067 check_func_headers windows.h GetProcessTimes
6068 check_func_headers windows.h GetStdHandle
6069 check_func_headers windows.h GetSystemTimeAsFileTime
6070 check_func_headers windows.h LoadLibrary
6071 check_func_headers windows.h MapViewOfFile
6072 check_func_headers windows.h PeekNamedPipe
6073 check_func_headers windows.h SetConsoleTextAttribute
6074 check_func_headers windows.h SetConsoleCtrlHandler
6075 check_func_headers windows.h SetDllDirectory
6076 check_func_headers windows.h Sleep
6077 check_func_headers windows.h VirtualAlloc
6078 check_func_headers glob.h glob
6079 enabled xlib &&
6080     check_lib xlib "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
6081
6082 check_headers direct.h
6083 check_headers dirent.h
6084 check_headers dxgidebug.h
6085 check_headers dxva.h
6086 check_headers dxva2api.h -D_WIN32_WINNT=0x0600
6087 check_headers io.h
6088 check_headers linux/perf_event.h
6089 check_headers libcrystalhd/libcrystalhd_if.h
6090 check_headers malloc.h
6091 check_headers net/udplite.h
6092 check_headers poll.h
6093 check_headers sys/param.h
6094 check_headers sys/resource.h
6095 check_headers sys/select.h
6096 check_headers sys/time.h
6097 check_headers sys/un.h
6098 check_headers termios.h
6099 check_headers unistd.h
6100 check_headers valgrind/valgrind.h
6101 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
6102 check_headers windows.h
6103 check_headers X11/extensions/XvMClib.h
6104 check_headers asm/types.h
6105
6106 # it seems there are versions of clang in some distros that try to use the
6107 # gcc headers, which explodes for stdatomic
6108 # so we also check that atomics actually work here
6109 check_builtin stdatomic stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0); foo += bar"
6110
6111 check_lib advapi32 "windows.h"            RegCloseKey          -ladvapi32
6112 check_lib bcrypt   "windows.h bcrypt.h"   BCryptGenRandom      -lbcrypt &&
6113     check_cpp_condition bcrypt bcrypt.h "defined BCRYPT_RNG_ALGORITHM"
6114 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
6115 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
6116 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
6117
6118 check_lib android android/native_window.h ANativeWindow_acquire -landroid
6119 check_lib mediandk "stdint.h media/NdkImage.h" AImage_delete -lmediandk
6120 check_lib camera2ndk "stdbool.h stdint.h camera/NdkCameraManager.h" ACameraManager_create -lcamera2ndk
6121
6122 enabled appkit       && check_apple_framework AppKit
6123 enabled audiotoolbox && check_apple_framework AudioToolbox
6124 enabled avfoundation && check_apple_framework AVFoundation
6125 enabled coreimage    && check_apple_framework CoreImage
6126 enabled videotoolbox && check_apple_framework VideoToolbox
6127
6128 check_apple_framework CoreFoundation
6129 check_apple_framework CoreMedia
6130 check_apple_framework CoreVideo
6131
6132 enabled avfoundation && {
6133     disable coregraphics applicationservices
6134     check_lib coregraphics        CoreGraphics/CoreGraphics.h               CGGetActiveDisplayList "-framework CoreGraphics" ||
6135     check_lib applicationservices ApplicationServices/ApplicationServices.h CGGetActiveDisplayList "-framework ApplicationServices"; }
6136
6137 enabled videotoolbox && {
6138     check_lib coreservices CoreServices/CoreServices.h UTGetOSTypeFromString "-framework CoreServices"
6139     check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_HEVC "-framework CoreMedia"
6140     check_func_headers CoreVideo/CVPixelBuffer.h kCVPixelFormatType_420YpCbCr10BiPlanarVideoRange "-framework CoreVideo"
6141     check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferTransferFunction_SMPTE_ST_2084_PQ "-framework CoreVideo"
6142     check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferTransferFunction_ITU_R_2100_HLG "-framework CoreVideo"
6143     check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferTransferFunction_Linear "-framework CoreVideo"
6144 }
6145
6146 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
6147
6148 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
6149 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
6150 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
6151 check_type "windows.h d3d11.h" "ID3D11VideoContext"
6152 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
6153
6154 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
6155 check_type "vdpau/vdpau.h" "VdpPictureInfoVP9"
6156
6157 if [ -z "$nvccflags" ]; then
6158     nvccflags=$nvccflags_default
6159 fi
6160
6161 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6162     nvccflags="$nvccflags -m64"
6163 else
6164     nvccflags="$nvccflags -m32"
6165 fi
6166
6167 if enabled cuda_nvcc; then
6168     nvccflags="$nvccflags -ptx"
6169 else
6170     nvccflags="$nvccflags -S -nocudalib -nocudainc --cuda-device-only -include ${source_link}/compat/cuda/cuda_runtime.h"
6171     check_nvcc cuda_llvm
6172 fi
6173
6174 if ! disabled ffnvcodec; then
6175     ffnv_hdr_list="ffnvcodec/nvEncodeAPI.h ffnvcodec/dynlink_cuda.h ffnvcodec/dynlink_cuviddec.h ffnvcodec/dynlink_nvcuvid.h"
6176     check_pkg_config ffnvcodec "ffnvcodec >= 9.1.23.1" "$ffnv_hdr_list" "" || \
6177       check_pkg_config ffnvcodec "ffnvcodec >= 9.0.18.3 ffnvcodec < 9.1" "$ffnv_hdr_list" "" || \
6178       check_pkg_config ffnvcodec "ffnvcodec >= 8.2.15.10 ffnvcodec < 8.3" "$ffnv_hdr_list" "" || \
6179       check_pkg_config ffnvcodec "ffnvcodec >= 8.1.24.11 ffnvcodec < 8.2" "$ffnv_hdr_list" ""
6180 fi
6181
6182 check_cpp_condition winrt windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)"
6183
6184 if ! disabled w32threads && ! enabled pthreads; then
6185     check_func_headers "windows.h process.h" _beginthreadex &&
6186         check_type "windows.h" CONDITION_VARIABLE &&
6187         check_type "windows.h" INIT_ONCE &&
6188         enable w32threads || disable w32threads
6189     if ! enabled w32threads && enabled winrt; then
6190         check_func_headers "windows.h" CreateThread &&
6191             enable w32threads || disable w32threads
6192     fi
6193 fi
6194
6195 # check for some common methods of building with pthread support
6196 # do this before the optional library checks as some of them require pthreads
6197 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
6198     if check_lib pthreads pthread.h pthread_join   -pthread &&
6199        check_lib pthreads pthread.h pthread_create -pthread; then
6200         add_cflags -pthread
6201     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
6202          check_lib pthreads pthread.h pthread_create -pthreads; then
6203         add_cflags -pthreads
6204     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
6205          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
6206         add_cflags -ldl -pthread
6207     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
6208          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
6209         :
6210     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
6211          check_lib pthreads pthread.h pthread_create -lpthread; then
6212         :
6213     elif check_func pthread_join && check_func pthread_create; then
6214         enable pthreads
6215     fi
6216     check_cc pthreads "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER"
6217
6218     if enabled pthreads; then
6219         check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
6220         check_func pthread_cancel $pthreads_extralibs
6221     fi
6222 fi
6223
6224 enabled  zlib && { check_pkg_config zlib zlib "zlib.h" zlibVersion ||
6225                    check_lib zlib   zlib.h      zlibVersion    -lz; }
6226 enabled bzlib && check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
6227 enabled  lzma && check_lib lzma   lzma.h lzma_version_number -llzma
6228
6229 # On some systems dynamic loading requires no extra linker flags
6230 check_lib libdl dlfcn.h "dlopen dlsym" || check_lib libdl dlfcn.h "dlopen dlsym" -ldl
6231
6232 check_lib libm math.h sin -lm
6233
6234 atan2f_args=2
6235 copysign_args=2
6236 hypot_args=2
6237 ldexpf_args=2
6238 powf_args=2
6239
6240 for func in $MATH_FUNCS; do
6241     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
6242 done
6243
6244 for func in $COMPLEX_FUNCS; do
6245     eval check_complexfunc $func \${${func}_args:-1}
6246 done
6247
6248 # these are off by default, so fail if requested and not available
6249 enabled cuda_nvcc         && { check_nvcc cuda_nvcc || die "ERROR: failed checking for nvcc."; }
6250 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
6251 enabled decklink          && { require_headers DeckLinkAPI.h &&
6252                                { test_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a090500" || die "ERROR: Decklink API version must be >= 10.9.5."; } }
6253 enabled frei0r            && require_headers "frei0r.h dlfcn.h"
6254 enabled gmp               && require gmp gmp.h mpz_export -lgmp
6255 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
6256 enabled jni               && { [ $target_os = "android" ] && check_headers jni.h && enabled pthreads || die "ERROR: jni not found"; }
6257 enabled ladspa            && require_headers "ladspa.h dlfcn.h"
6258 enabled libaom            && require_pkg_config libaom "aom >= 1.0.0" aom/aom_codec.h aom_codec_version
6259 enabled libaribb24        && { check_pkg_config libaribb24 "aribb24 > 1.0.3" "aribb24/aribb24.h" arib_instance_new ||
6260                                { enabled gpl && require_pkg_config libaribb24 aribb24 "aribb24/aribb24.h" arib_instance_new; } ||
6261                                die "ERROR: libaribb24 requires version higher than 1.0.3 or --enable-gpl."; }
6262 enabled lv2               && require_pkg_config lv2 lilv-0 "lilv/lilv.h" lilv_world_new
6263 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
6264 enabled libass            && require_pkg_config libass libass ass/ass.h ass_library_init
6265 enabled libbluray         && require_pkg_config libbluray libbluray libbluray/bluray.h bd_open
6266 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
6267 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
6268                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
6269                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
6270 enabled libcaca           && require_pkg_config libcaca caca caca.h caca_create_canvas
6271 enabled libcodec2         && require libcodec2 codec2/codec2.h codec2_create -lcodec2
6272 enabled libdav1d          && require_pkg_config libdav1d "dav1d >= 0.4.0" "dav1d/dav1d.h" dav1d_version
6273 enabled libdavs2          && require_pkg_config libdavs2 "davs2 >= 1.6.0" davs2.h davs2_decoder_open
6274 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
6275 enabled libdrm            && require_pkg_config libdrm libdrm xf86drm.h drmGetVersion
6276 enabled libfdk_aac        && { check_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
6277                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
6278                                  warn "using libfdk without pkg-config"; } }
6279 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"
6280 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
6281 enabled fontconfig        && enable libfontconfig
6282 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
6283 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
6284 enabled libfribidi        && require_pkg_config libfribidi fribidi fribidi.h fribidi_version_info
6285 enabled libglslang        && require_cpp libglslang glslang/SPIRV/GlslangToSpv.h "glslang::TIntermediate*" -lglslang -lOSDependent -lHLSL -lOGLCompiler -lSPVRemapper -lSPIRV -lSPIRV-Tools-opt -lSPIRV-Tools -lpthread -lstdc++
6286 enabled libgme            && { check_pkg_config libgme libgme gme/gme.h gme_new_emu ||
6287                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }
6288 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
6289                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
6290                                done || die "ERROR: libgsm not found"; }
6291 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc $pthreads_extralibs
6292 enabled libklvanc         && require libklvanc libklvanc/vanc.h klvanc_context_create -lklvanc
6293 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
6294 enabled liblensfun        && require_pkg_config liblensfun lensfun lensfun.h lf_db_new
6295 # While it may appear that require is being used as a pkg-config
6296 # fallback for libmfx, it is actually being used to detect a different
6297 # installation route altogether.  If libmfx is installed via the Intel
6298 # Media SDK or Intel Media Server Studio, these don't come with
6299 # pkg-config support.  Instead, users should make sure that the build
6300 # can find the libraries and headers through other means.
6301 enabled libmfx            && { check_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit ||
6302                                { require libmfx "mfx/mfxvideo.h" MFXInit "-llibmfx $advapi32_extralibs" && warn "using libmfx without pkg-config"; } }
6303 if enabled libmfx; then
6304    check_cc MFX_CODEC_VP9 "mfx/mfxvp9.h mfx/mfxstructures.h" "MFX_CODEC_VP9"
6305 fi
6306
6307 enabled libmodplug        && require_pkg_config libmodplug libmodplug libmodplug/modplug.h ModPlug_Load
6308 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame $libm_extralibs
6309 enabled libmysofa         && { check_pkg_config libmysofa libmysofa mysofa.h mysofa_neighborhood_init_withstepdefine ||
6310                                require libmysofa mysofa.h mysofa_neighborhood_init_withstepdefine -lmysofa $zlib_extralibs; }
6311 enabled libnpp            && { check_lib libnpp npp.h nppGetLibVersion -lnppig -lnppicc -lnppc -lnppidei ||
6312                                check_lib libnpp npp.h nppGetLibVersion -lnppi -lnppc -lnppidei ||
6313                                die "ERROR: libnpp not found"; }
6314 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
6315 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
6316 enabled libopencv         && { check_headers opencv2/core/core_c.h &&
6317                                { check_pkg_config libopencv opencv opencv2/core/core_c.h cvCreateImageHeader ||
6318                                  require libopencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
6319                                require_pkg_config libopencv opencv opencv/cxcore.h cvCreateImageHeader; }
6320 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
6321 enabled libopenjpeg       && { check_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version ||
6322                                { require_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } }
6323 enabled libopenmpt        && require_pkg_config libopenmpt "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create -lstdc++ && append libopenmpt_extralibs "-lstdc++"
6324 enabled libopus           && {
6325     enabled libopus_decoder && {
6326         require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
6327     }
6328     enabled libopus_encoder && {
6329         require_pkg_config libopus opus opus_multistream.h opus_multistream_surround_encoder_create
6330     }
6331 }
6332 enabled libpulse          && require_pkg_config libpulse libpulse pulse/pulseaudio.h pa_context_new
6333 enabled librabbitmq       && require_pkg_config librabbitmq "librabbitmq >= 0.7.1" amqp.h amqp_new_connection
6334 enabled librav1e          && require_pkg_config librav1e "rav1e >= 0.1.0" rav1e.h rav1e_context_new
6335 enabled librsvg           && require_pkg_config librsvg librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
6336 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
6337 enabled librubberband     && require_pkg_config librubberband "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new -lstdc++ && append librubberband_extralibs "-lstdc++"
6338 enabled libshine          && require_pkg_config libshine shine shine/layer3.h shine_encode_buffer
6339 enabled libsmbclient      && { check_pkg_config libsmbclient smbclient libsmbclient.h smbc_init ||
6340                                require libsmbclient libsmbclient.h smbc_init -lsmbclient; }
6341 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy -lstdc++
6342 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
6343 enabled libssh            && require_pkg_config libssh libssh libssh/sftp.h sftp_init
6344 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init
6345 enabled libsrt            && require_pkg_config libsrt "srt >= 1.3.0" srt/srt.h srt_socket
6346 enabled libtensorflow     && require libtensorflow tensorflow/c/c_api.h TF_Version -ltensorflow
6347 enabled libtesseract      && require_pkg_config libtesseract tesseract tesseract/capi.h TessBaseAPICreate
6348 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
6349 enabled libtls            && require_pkg_config libtls libtls tls.h tls_configure
6350 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
6351                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
6352                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
6353 enabled libv4l2           && require_pkg_config libv4l2 libv4l2 libv4l2.h v4l2_ioctl
6354 enabled libvidstab        && require_pkg_config libvidstab "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
6355 enabled libvmaf           && require_pkg_config libvmaf "libvmaf >= 1.3.9" libvmaf.h compute_vmaf
6356 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
6357 enabled libvorbis         && require_pkg_config libvorbis vorbis vorbis/codec.h vorbis_info_init &&
6358                              require_pkg_config libvorbisenc vorbisenc vorbis/vorbisenc.h vorbis_encode_init
6359
6360 enabled libvpx            && {
6361     enabled libvpx_vp8_decoder && {
6362         check_pkg_config libvpx_vp8_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
6363             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"
6364     }
6365     enabled libvpx_vp8_encoder && {
6366         check_pkg_config libvpx_vp8_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
6367             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"
6368     }
6369     enabled libvpx_vp9_decoder && {
6370         check_pkg_config libvpx_vp9_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
6371             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"
6372     }
6373     enabled libvpx_vp9_encoder && {
6374         check_pkg_config libvpx_vp9_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
6375             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"
6376     }
6377     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
6378         die "libvpx enabled but no supported decoders found"
6379     fi
6380 }
6381
6382 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
6383 enabled libwebp           && {
6384     enabled libwebp_encoder      && require_pkg_config libwebp "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
6385     enabled libwebp_anim_encoder && check_pkg_config libwebp_anim_encoder "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit; }
6386 enabled libx264           && { check_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode ||
6387                                { require libx264 "stdint.h x264.h" x264_encoder_encode "-lx264 $pthreads_extralibs $libm_extralibs" &&
6388                                  warn "using libx264 without pkg-config"; } } &&
6389                              require_cpp_condition libx264 x264.h "X264_BUILD >= 118" &&
6390                              check_cpp_condition libx262 x264.h "X264_MPEG2"
6391 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
6392                              require_cpp_condition libx265 x265.h "X265_BUILD >= 70"
6393 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode "-lxavs $pthreads_extralibs $libm_extralibs"
6394 enabled libxavs2          && require_pkg_config libxavs2 "xavs2 >= 1.3.0" "stdint.h xavs2.h" xavs2_api_get
6395 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
6396 enabled libzimg           && require_pkg_config libzimg "zimg >= 2.7.0" zimg.h zimg_get_api_version
6397 enabled libzmq            && require_pkg_config libzmq "libzmq >= 4.2.1" zmq.h zmq_ctx_new
6398 enabled libzvbi           && require_pkg_config libzvbi zvbi-0.2 libzvbi.h vbi_decoder_new &&
6399                              { test_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
6400                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
6401 enabled libxml2           && require_pkg_config libxml2 libxml-2.0 libxml2/libxml/xmlversion.h xmlCheckVersion
6402 enabled mbedtls           && { check_pkg_config mbedtls mbedtls mbedtls/x509_crt.h mbedtls_x509_crt_init ||
6403                                check_pkg_config mbedtls mbedtls mbedtls/ssl.h mbedtls_ssl_init ||
6404                                check_lib mbedtls mbedtls/ssl.h mbedtls_ssl_init -lmbedtls -lmbedx509 -lmbedcrypto ||
6405                                die "ERROR: mbedTLS not found"; }
6406 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
6407 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
6408                                { ! enabled cross_compile &&
6409                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
6410                                  add_ldflags -L/opt/vc/lib/ &&
6411                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
6412                                die "ERROR: mmal not found" &&
6413                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
6414 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
6415                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
6416                                die "ERROR: openal not found"; } &&
6417                              { test_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
6418                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
6419 enabled opencl            && { check_pkg_config opencl OpenCL CL/cl.h clEnqueueNDRangeKernel ||
6420                                check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
6421                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
6422                                die "ERROR: opencl not found"; } &&
6423                              { test_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
6424                                test_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
6425                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
6426 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
6427                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
6428                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
6429                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
6430                                die "ERROR: opengl not found."
6431                              }
6432 enabled omx_rpi           && { test_code cc OMX_Core.h OMX_IndexConfigBrcmVideoRequestIFrame ||
6433                                { ! enabled cross_compile &&
6434                                  add_cflags -isystem/opt/vc/include/IL &&
6435                                  test_code cc OMX_Core.h OMX_IndexConfigBrcmVideoRequestIFrame; } ||
6436                                die "ERROR: OpenMAX IL headers from raspberrypi/firmware not found"; } &&
6437                              enable omx
6438 enabled omx               && require_headers OMX_Core.h
6439 enabled openssl           && { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
6440                                check_pkg_config openssl openssl openssl/ssl.h SSL_library_init ||
6441                                check_lib openssl openssl/ssl.h OPENSSL_init_ssl -lssl -lcrypto ||
6442                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
6443                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
6444                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
6445                                die "ERROR: openssl not found"; }
6446 enabled pocketsphinx      && require_pkg_config pocketsphinx pocketsphinx pocketsphinx/pocketsphinx.h ps_init
6447 enabled rkmpp             && { require_pkg_config rkmpp rockchip_mpp  rockchip/rk_mpi.h mpp_create &&
6448                                require_pkg_config rockchip_mpp "rockchip_mpp >= 1.3.7" rockchip/rk_mpi.h mpp_create &&
6449                                { enabled libdrm ||
6450                                  die "ERROR: rkmpp requires --enable-libdrm"; }
6451                              }
6452 enabled vapoursynth       && require_pkg_config vapoursynth "vapoursynth-script >= 42" VSScript.h vsscript_init
6453
6454
6455 if enabled gcrypt; then
6456     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
6457     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
6458         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
6459         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
6460         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
6461             die "ERROR: gcrypt not found"
6462         add_cflags $gcrypt_cflags
6463     else
6464         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
6465     fi
6466 fi
6467
6468 if enabled sdl2; then
6469     SDL2_CONFIG="${cross_prefix}sdl2-config"
6470     test_pkg_config sdl2 "sdl2 >= 2.0.1 sdl2 < 2.1.0" SDL_events.h SDL_PollEvent
6471     if disabled sdl2 && "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6472         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6473         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6474         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6475         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6476         check_func_headers SDL_events.h SDL_PollEvent $sdl2_extralibs $sdl2_cflags &&
6477             enable sdl2
6478     fi
6479     if test $target_os = "mingw32"; then
6480         sdl2_extralibs=$(filter_out '-mwindows' $sdl2_extralibs)
6481     fi
6482 fi
6483
6484 if enabled decklink; then
6485     case $target_os in
6486         mingw32*|mingw64*|win32|win64)
6487             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6488             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6489             ;;
6490     esac
6491 fi
6492
6493 enabled securetransport &&
6494     check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6495     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" ||
6496         disable securetransport
6497
6498 enabled securetransport &&
6499     check_func SecItemImport "-Wl,-framework,CoreFoundation -Wl,-framework,Security"
6500
6501 enabled schannel &&
6502     check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6503     test_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" &&
6504     schannel_extralibs="-lsecur32" ||
6505         disable schannel
6506
6507 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6508 enabled makeinfo \
6509     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6510     && enable makeinfo_html || disable makeinfo_html
6511 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6512 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6513 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6514 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6515
6516 # check V4L2 codecs available in the API
6517 if enabled v4l2_m2m; then
6518     check_headers linux/fb.h
6519     check_headers linux/videodev2.h
6520     test_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6521     check_cc v4l2_m2m linux/videodev2.h "int i = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_VIDEO_M2M | V4L2_BUF_FLAG_LAST;"
6522     check_cc vc1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VC1_ANNEX_G;"
6523     check_cc mpeg1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG1;"
6524     check_cc mpeg2_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG2;"
6525     check_cc mpeg4_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG4;"
6526     check_cc hevc_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_HEVC;"
6527     check_cc h263_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H263;"
6528     check_cc h264_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H264;"
6529     check_cc vp8_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP8;"
6530     check_cc vp9_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP9;"
6531 fi
6532
6533 check_headers sys/videoio.h
6534 test_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6535
6536 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6537 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6538 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6539 # w32api 3.12 had it defined wrong
6540 check_cpp_condition vfwcap_defines vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER"
6541
6542 check_type "dshow.h" IBaseFilter
6543
6544 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6545 check_headers "dev/bktr/ioctl_meteor.h dev/bktr/ioctl_bt848.h"                   ||
6546     check_headers "machine/ioctl_meteor.h machine/ioctl_bt848.h"                 ||
6547     check_headers "dev/video/meteor/ioctl_meteor.h dev/video/bktr/ioctl_bt848.h" ||
6548     check_headers "dev/ic/bt8xx.h"
6549
6550 if check_struct sys/soundcard.h audio_buf_info bytes; then
6551     enable_sanitized sys/soundcard.h
6552 else
6553     test_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_sanitized sys/soundcard.h
6554     #include <sys/soundcard.h>
6555     audio_buf_info abc;
6556 EOF
6557 fi
6558
6559 enabled alsa && { check_pkg_config alsa alsa "alsa/asoundlib.h" snd_pcm_htimestamp ||
6560                   check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound; }
6561
6562 enabled libjack &&
6563     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
6564
6565 enabled sndio && check_lib sndio sndio.h sio_open -lsndio
6566
6567 if enabled libcdio; then
6568     check_pkg_config libcdio libcdio_paranoia "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open ||
6569     check_pkg_config libcdio libcdio_paranoia "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open ||
6570     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6571     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6572     die "ERROR: No usable libcdio/cdparanoia found"
6573 fi
6574
6575 enabled libxcb && check_pkg_config libxcb "xcb >= 1.4" xcb/xcb.h xcb_connect ||
6576     disable libxcb_shm libxcb_shape libxcb_xfixes
6577
6578 if enabled libxcb; then
6579     enabled libxcb_shm    && check_pkg_config libxcb_shm    xcb-shm    xcb/shm.h    xcb_shm_attach
6580     enabled libxcb_shape  && check_pkg_config libxcb_shape  xcb-shape  xcb/shape.h  xcb_shape_get_rectangles
6581     enabled libxcb_xfixes && check_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
6582 fi
6583
6584 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6585
6586 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6587 # the desktop api partition
6588 test_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
6589 #ifdef WINAPI_FAMILY
6590 #include <winapifamily.h>
6591 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
6592 #error desktop, not uwp
6593 #else
6594 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
6595 #endif
6596 #else
6597 #error no family set
6598 #endif
6599 EOF
6600
6601 enabled vaapi &&
6602     check_pkg_config vaapi "libva >= 0.35.0" "va/va.h" vaInitialize
6603
6604 if enabled vaapi; then
6605     check_pkg_config vaapi_drm "libva-drm" "va/va_drm.h" vaGetDisplayDRM
6606
6607     if enabled xlib; then
6608         check_pkg_config vaapi_x11 "libva-x11" "va/va_x11.h" vaGetDisplay
6609     fi
6610
6611     check_cpp_condition vaapi_1 "va/va.h" "VA_CHECK_VERSION(1, 0, 0)"
6612
6613     check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
6614     check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
6615     check_type   "va/va.h va/va_vpp.h" "VAProcFilterParameterBufferHDRToneMapping"
6616     check_struct "va/va.h va/va_vpp.h" "VAProcPipelineCaps" rotation_flags
6617     check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
6618     check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
6619     check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
6620     check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
6621 fi
6622
6623 if enabled_all opencl libdrm ; then
6624     check_type "CL/cl_intel.h" "clCreateImageFromFdINTEL_fn" &&
6625         enable opencl_drm_beignet
6626     check_func_headers "CL/cl_ext.h" clImportMemoryARM &&
6627         enable opencl_drm_arm
6628 fi
6629
6630 if enabled_all opencl vaapi ; then
6631     if enabled opencl_drm_beignet ; then
6632         enable opencl_vaapi_beignet
6633     else
6634         check_type "CL/cl.h CL/cl_va_api_media_sharing_intel.h" "clCreateFromVA_APIMediaSurfaceINTEL_fn" &&
6635             enable opencl_vaapi_intel_media
6636     fi
6637 fi
6638
6639 if enabled_all opencl dxva2 ; then
6640     check_type "CL/cl_dx9_media_sharing.h" cl_dx9_surface_info_khr &&
6641         enable opencl_dxva2
6642 fi
6643
6644 if enabled_all opencl d3d11va ; then
6645     check_type "CL/cl_d3d11.h" clGetDeviceIDsFromD3D11KHR_fn &&
6646         enable opencl_d3d11
6647 fi
6648
6649 enabled vdpau &&
6650     check_cpp_condition vdpau vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP"
6651
6652 enabled vdpau &&
6653     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6654
6655 enabled crystalhd && check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
6656
6657 enabled vulkan &&
6658     require_pkg_config vulkan "vulkan >= 1.1.97" "vulkan/vulkan.h" vkCreateInstance
6659
6660 if enabled x86; then
6661     case $target_os in
6662         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6663             ;;
6664         *)
6665             disable ffnvcodec cuvid nvdec nvenc
6666             ;;
6667     esac
6668 elif enabled ppc64 && ! enabled bigendian; then
6669     case $target_os in
6670         linux)
6671             ;;
6672         *)
6673             disable ffnvcodec cuvid nvdec nvenc
6674             ;;
6675     esac
6676 else
6677     disable ffnvcodec cuvid nvdec nvenc
6678 fi
6679
6680 enabled ffnvcodec && enable cuda
6681
6682 enabled nvenc &&
6683     test_cc -I$source_path <<EOF || disable nvenc
6684 #include <ffnvcodec/nvEncodeAPI.h>
6685 NV_ENCODE_API_FUNCTION_LIST flist;
6686 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6687 int main(void) { return 0; }
6688 EOF
6689
6690 enabled amf &&
6691     check_cpp_condition amf "AMF/core/Version.h" \
6692         "(AMF_VERSION_MAJOR << 48 | AMF_VERSION_MINOR << 32 | AMF_VERSION_RELEASE << 16 | AMF_VERSION_BUILD_NUM) >= 0x0001000400090000"
6693
6694 # Funny iconv installations are not unusual, so check it after all flags have been set
6695 if enabled libc_iconv; then
6696     check_func_headers iconv.h iconv
6697 elif enabled iconv; then
6698     check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6699 fi
6700
6701 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6702
6703 # add some useful compiler flags if supported
6704 check_cflags -Wdeclaration-after-statement
6705 check_cflags -Wall
6706 check_cflags -Wdisabled-optimization
6707 check_cflags -Wpointer-arith
6708 check_cflags -Wredundant-decls
6709 check_cflags -Wwrite-strings
6710 check_cflags -Wtype-limits
6711 check_cflags -Wundef
6712 check_cflags -Wmissing-prototypes
6713 check_cflags -Wno-pointer-to-int-cast
6714 check_cflags -Wstrict-prototypes
6715 check_cflags -Wempty-body
6716
6717 if enabled extra_warnings; then
6718     check_cflags -Wcast-qual
6719     check_cflags -Wextra
6720     check_cflags -Wpedantic
6721 fi
6722
6723 check_disable_warning(){
6724     warning_flag=-W${1#-Wno-}
6725     test_cflags $unknown_warning_flags $warning_flag && add_cflags $1
6726 }
6727
6728 test_cflags -Werror=unused-command-line-argument &&
6729     append unknown_warning_flags "-Werror=unused-command-line-argument"
6730 test_cflags -Werror=unknown-warning-option &&
6731     append unknown_warning_flags "-Werror=unknown-warning-option"
6732
6733 check_disable_warning -Wno-parentheses
6734 check_disable_warning -Wno-switch
6735 check_disable_warning -Wno-format-zero-length
6736 check_disable_warning -Wno-pointer-sign
6737 check_disable_warning -Wno-unused-const-variable
6738 check_disable_warning -Wno-bool-operation
6739 check_disable_warning -Wno-char-subscripts
6740
6741 check_disable_warning_headers(){
6742     warning_flag=-W${1#-Wno-}
6743     test_cflags $warning_flag && add_cflags_headers $1
6744 }
6745
6746 check_disable_warning_headers -Wno-deprecated-declarations
6747 check_disable_warning_headers -Wno-unused-variable
6748
6749 test_cc <<EOF && enable blocks_extension
6750 void (^block)(void);
6751 EOF
6752
6753 # add some linker flags
6754 check_ldflags -Wl,--warn-common
6755 check_ldflags -Wl,-rpath-link=:libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6756 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir && add_ldsoflags -Wl,-rpath,$libdir
6757 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6758
6759 # add some strip flags
6760 check_stripflags -x
6761
6762 enabled neon_clobber_test &&
6763     check_ldflags -Wl,--wrap,avcodec_open2              \
6764                   -Wl,--wrap,avcodec_decode_audio4      \
6765                   -Wl,--wrap,avcodec_decode_video2      \
6766                   -Wl,--wrap,avcodec_decode_subtitle2   \
6767                   -Wl,--wrap,avcodec_encode_audio2      \
6768                   -Wl,--wrap,avcodec_encode_video2      \
6769                   -Wl,--wrap,avcodec_encode_subtitle    \
6770                   -Wl,--wrap,avcodec_send_packet        \
6771                   -Wl,--wrap,avcodec_receive_packet     \
6772                   -Wl,--wrap,avcodec_send_frame         \
6773                   -Wl,--wrap,avcodec_receive_frame      \
6774                   -Wl,--wrap,swr_convert                \
6775                   -Wl,--wrap,avresample_convert ||
6776     disable neon_clobber_test
6777
6778 enabled xmm_clobber_test &&
6779     check_ldflags -Wl,--wrap,avcodec_open2              \
6780                   -Wl,--wrap,avcodec_decode_audio4      \
6781                   -Wl,--wrap,avcodec_decode_video2      \
6782                   -Wl,--wrap,avcodec_decode_subtitle2   \
6783                   -Wl,--wrap,avcodec_encode_audio2      \
6784                   -Wl,--wrap,avcodec_encode_video2      \
6785                   -Wl,--wrap,avcodec_encode_subtitle    \
6786                   -Wl,--wrap,avcodec_send_packet        \
6787                   -Wl,--wrap,avcodec_receive_packet     \
6788                   -Wl,--wrap,avcodec_send_frame         \
6789                   -Wl,--wrap,avcodec_receive_frame      \
6790                   -Wl,--wrap,swr_convert                \
6791                   -Wl,--wrap,avresample_convert         \
6792                   -Wl,--wrap,sws_scale ||
6793     disable xmm_clobber_test
6794
6795 check_ld "cc" proper_dce <<EOF
6796 extern const int array[512];
6797 static inline int func(void) { return array[0]; }
6798 int main(void) { return 0; }
6799 EOF
6800
6801 if enabled proper_dce; then
6802     echo "X { local: *; };" > $TMPV
6803     if test_ldflags -Wl,${version_script},$TMPV; then
6804         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6805         quotes='""'
6806         test_cc <<EOF && enable symver_asm_label
6807 void ff_foo(void) __asm__ ("av_foo@VERSION");
6808 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6809 EOF
6810         test_cc <<EOF && enable symver_gnu_asm
6811 __asm__(".symver ff_foo,av_foo@VERSION");
6812 void ff_foo(void) {}
6813 EOF
6814     fi
6815 fi
6816
6817 if [ -z "$optflags" ]; then
6818     if enabled small; then
6819         optflags=$cflags_size
6820     elif enabled optimizations; then
6821         optflags=$cflags_speed
6822     else
6823         optflags=$cflags_noopt
6824     fi
6825 fi
6826
6827 check_optflags(){
6828     check_cflags "$@"
6829     enabled lto && check_ldflags "$@"
6830 }
6831
6832 check_optflags $optflags
6833 check_optflags -fno-math-errno
6834 check_optflags -fno-signed-zeros
6835
6836 if enabled lto; then
6837     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6838     check_cflags  -flto
6839     check_ldflags -flto $cpuflags
6840     disable inline_asm_direct_symbol_refs
6841 fi
6842
6843 enabled ftrapv && check_cflags -ftrapv
6844
6845 test_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6846 int x;
6847 EOF
6848
6849
6850 if enabled icc; then
6851     # Just warnings, no remarks
6852     check_cflags -w1
6853     # -wd: Disable following warnings
6854     # 144, 167, 556: -Wno-pointer-sign
6855     # 188: enumerated type mixed with another type
6856     # 1292: attribute "foo" ignored
6857     # 1419: external declaration in primary source file
6858     # 10006: ignoring unknown option -fno-signed-zeros
6859     # 10148: ignoring unknown option -Wno-parentheses
6860     # 10156: ignoring option '-W'; no argument required
6861     # 13200: No EMMS instruction before call to function
6862     # 13203: No EMMS instruction before return from function
6863     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6864     # 11030: Warning unknown option --as-needed
6865     # 10156: ignoring option '-export'; no argument required
6866     check_ldflags -wd10156,11030
6867     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6868     enable ebp_available
6869     # The test above does not test linking
6870     enabled lto && disable symver_asm_label
6871     if enabled x86_32; then
6872         icc_version=$($cc -dumpversion)
6873         test ${icc_version%%.*} -ge 11 &&
6874             check_cflags -falign-stack=maintain-16-byte ||
6875             disable aligned_stack
6876     fi
6877 elif enabled gcc; then
6878     check_optflags -fno-tree-vectorize
6879     check_cflags -Werror=format-security
6880     check_cflags -Werror=implicit-function-declaration
6881     check_cflags -Werror=missing-prototypes
6882     check_cflags -Werror=return-type
6883     check_cflags -Werror=vla
6884     check_cflags -Wformat
6885     check_cflags -fdiagnostics-color=auto
6886     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6887     if enabled x86_32; then
6888         case $target_os in
6889         *bsd*)
6890             # BSDs don't guarantee a 16 byte aligned stack, but we can
6891             # request GCC to try to maintain 16 byte alignment throughout
6892             # function calls. Library entry points that might call assembly
6893             # functions align the stack. (The parameter means 2^4 bytes.)
6894             check_cflags -mpreferred-stack-boundary=4
6895             ;;
6896         esac
6897     fi
6898 elif enabled llvm_gcc; then
6899     check_cflags -mllvm -stack-alignment=16
6900 elif enabled clang; then
6901     if enabled x86_32; then
6902         # Clang doesn't support maintaining alignment without assuming the
6903         # same alignment in every function. If 16 byte alignment would be
6904         # enabled, one would also have to either add attribute_align_arg on
6905         # every single entry point into the libraries or enable -mstackrealign
6906         # (doing stack realignment in every single function).
6907         case $target_os in
6908         mingw32|win32|*bsd*)
6909             disable aligned_stack
6910             ;;
6911         *)
6912             check_cflags -mllvm -stack-alignment=16
6913             check_cflags -mstack-alignment=16
6914             ;;
6915         esac
6916     else
6917         check_cflags -mllvm -stack-alignment=16
6918         check_cflags -mstack-alignment=16
6919     fi
6920     check_cflags -Qunused-arguments
6921     check_cflags -Werror=implicit-function-declaration
6922     check_cflags -Werror=missing-prototypes
6923     check_cflags -Werror=return-type
6924 elif enabled cparser; then
6925     add_cflags -Wno-missing-variable-declarations
6926     add_cflags -Wno-empty-statement
6927 elif enabled armcc; then
6928     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6929     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6930     # 2523: use of inline assembly is deprecated
6931     add_cflags -W${armcc_opt},--diag_suppress=2523
6932     add_cflags -W${armcc_opt},--diag_suppress=1207
6933     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6934     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6935     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6936     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6937 elif enabled pathscale; then
6938     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6939     disable inline_asm
6940 elif enabled_any msvc icl; then
6941     enabled x86_32 && disable aligned_stack
6942     enabled_all x86_32 debug && add_cflags -Oy-
6943     enabled debug && add_ldflags -debug
6944     enable pragma_deprecated
6945     if enabled icl; then
6946         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6947         # (correctly) on icl 13.x.
6948         test_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6949             add_cflags -Qansi-alias
6950         # Some inline asm is not compilable in debug
6951         if enabled debug; then
6952             disable ebp_available
6953             disable ebx_available
6954         fi
6955     fi
6956     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6957     check_cpp_condition log2 crtversion.h "_VC_CRT_MAJOR_VERSION >= 12"
6958     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6959     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6960     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6961     # MSVC 2013 and newer can handle it fine.
6962     # If this declspec fails, force including stdlib.h before the restrict redefinition
6963     # happens in config.h.
6964     if [ $restrict_keyword != restrict ]; then
6965         test_cc <<EOF || add_cflags -FIstdlib.h
6966 __declspec($restrict_keyword) void *foo(int);
6967 EOF
6968     fi
6969     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6970     # Issue has been fixed in MSVC v19.00.24218.
6971     test_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6972         check_cflags -d2SSAOptimizer-
6973     # enable utf-8 source processing on VS2015 U2 and newer
6974     test_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6975         add_cflags -utf-8
6976 fi
6977
6978 for pfx in "" host_; do
6979     varname=${pfx%_}cc_type
6980     eval "type=\$$varname"
6981     if [ "$type" = "msvc" ]; then
6982         test_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6983 static inline int foo(int a) { return a; }
6984 EOF
6985     fi
6986 done
6987
6988 case $as_type in
6989     clang)
6990         add_asflags -Qunused-arguments
6991     ;;
6992 esac
6993
6994 case $ld_type in
6995     clang)
6996         check_ldflags -Qunused-arguments
6997     ;;
6998 esac
6999
7000 enable frame_thread_encoder
7001
7002 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
7003
7004 check_deps $CONFIG_LIST       \
7005            $CONFIG_EXTRA      \
7006            $HAVE_LIST         \
7007            $ALL_COMPONENTS    \
7008
7009 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"
7010 enabled avresample && warn "Building with deprecated library libavresample"
7011
7012 case $target_os in
7013 haiku)
7014     disable memalign
7015     disable posix_memalign
7016     ;;
7017 *-dos|freedos|opendos)
7018     if test_cpp_condition sys/version.h "defined(__DJGPP__) && __DJGPP__ == 2 && __DJGPP_MINOR__ == 5"; then
7019         disable memalign
7020     fi
7021     ;;
7022 esac
7023
7024 flatten_extralibs(){
7025     nested_entries=
7026     list_name=$1
7027     eval list=\$${1}
7028     for entry in $list; do
7029         entry_copy=$entry
7030         resolve entry_copy
7031         flat_entries=
7032         for e in $entry_copy; do
7033             case $e in
7034                 *_extralibs) nested_entries="$nested_entries$e ";;
7035                           *) flat_entries="$flat_entries$e ";;
7036             esac
7037         done
7038         eval $entry="\$flat_entries"
7039     done
7040     append $list_name "$nested_entries"
7041
7042     resolve nested_entries
7043     if test -n "$(filter '*_extralibs' $nested_entries)"; then
7044         flatten_extralibs $list_name
7045     fi
7046 }
7047
7048 flatten_extralibs_wrapper(){
7049     list_name=$1
7050     flatten_extralibs $list_name
7051     unique $list_name
7052     resolve $list_name
7053     eval $list_name=\$\(\$ldflags_filter \$$list_name\)
7054     eval printf \''%s'\' \""\$$list_name"\"
7055 }
7056
7057 for linkunit in $LIBRARY_LIST; do
7058     unset current_extralibs
7059     eval components=\$$(toupper ${linkunit})_COMPONENTS_LIST
7060     for comp in ${components}; do
7061         enabled $comp || continue
7062         comp_extralibs="${comp}_extralibs"
7063         append current_extralibs $comp_extralibs
7064     done
7065     eval prepend ${linkunit}_extralibs $current_extralibs
7066 done
7067
7068 for linkunit in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
7069     eval ${linkunit}_extralibs=\$\(flatten_extralibs_wrapper ${linkunit}_extralibs\)
7070 done
7071
7072 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
7073
7074 for thread in $THREADS_LIST; do
7075     if enabled $thread; then
7076         test -n "$thread_type" &&
7077             die "ERROR: Only one thread type must be selected." ||
7078             thread_type="$thread"
7079     fi
7080 done
7081
7082 if disabled stdatomic; then
7083     if enabled atomics_gcc; then
7084         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
7085     elif enabled atomics_win32; then
7086         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
7087     elif enabled atomics_suncc; then
7088         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
7089     elif enabled pthreads; then
7090         add_compat atomics/pthread/stdatomic.o
7091         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
7092     else
7093         enabled threads && die "Threading is enabled, but no atomics are available"
7094         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
7095     fi
7096 fi
7097
7098 # Check if requested libraries were found.
7099 for lib in $AUTODETECT_LIBS; do
7100     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
7101 done
7102
7103 enabled zlib && add_cppflags -DZLIB_CONST
7104
7105 # conditional library dependencies, in any order
7106 enabled afftdn_filter       && prepend avfilter_deps "avcodec"
7107 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
7108 enabled afir_filter         && prepend avfilter_deps "avcodec"
7109 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
7110 enabled aresample_filter    && prepend avfilter_deps "swresample"
7111 enabled atempo_filter       && prepend avfilter_deps "avcodec"
7112 enabled bm3d_filter         && prepend avfilter_deps "avcodec"
7113 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
7114 enabled convolve_filter     && prepend avfilter_deps "avcodec"
7115 enabled deconvolve_filter   && prepend avfilter_deps "avcodec"
7116 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
7117 enabled elbg_filter         && prepend avfilter_deps "avcodec"
7118 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
7119 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
7120 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
7121 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
7122 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
7123 enabled pan_filter          && prepend avfilter_deps "swresample"
7124 enabled pp_filter           && prepend avfilter_deps "postproc"
7125 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
7126 enabled resample_filter && prepend avfilter_deps "avresample"
7127 enabled sab_filter          && prepend avfilter_deps "swscale"
7128 enabled scale_filter    && prepend avfilter_deps "swscale"
7129 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
7130 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
7131 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
7132 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
7133 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
7134 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
7135 enabled smartblur_filter    && prepend avfilter_deps "swscale"
7136 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
7137 enabled spp_filter          && prepend avfilter_deps "avcodec"
7138 enabled sr_filter           && prepend avfilter_deps "avformat swscale"
7139 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
7140 enabled uspp_filter         && prepend avfilter_deps "avcodec"
7141 enabled zoompan_filter      && prepend avfilter_deps "swscale"
7142
7143 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
7144
7145 #FIXME
7146 enabled_any sdl2_outdev opengl_outdev && enabled sdl2 &&
7147     add_cflags $(filter_out '-Dmain=SDL_main' $sdl2_cflags)
7148
7149 enabled opus_decoder    && prepend avcodec_deps "swresample"
7150
7151 # reorder the items at var $1 to align with the items order at var $2 .
7152 # die if an item at $1 is not at $2 .
7153 reorder_by(){
7154     eval rb_in=\$$1
7155     eval rb_ordered=\$$2
7156
7157     for rb in $rb_in; do
7158         is_in $rb $rb_ordered || die "$rb at \$$1 is not at \$$2"
7159     done
7160
7161     rb_out=
7162     for rb in $rb_ordered; do
7163         is_in $rb $rb_in && rb_out="$rb_out$rb "
7164     done
7165     eval $1=\$rb_out
7166 }
7167
7168 # deps-expand fflib $1:  N x {append all expanded deps; unique}
7169 # within a set of N items, N expansions are enough to expose a cycle.
7170 expand_deps(){
7171     unique ${1}_deps  # required for the early break test.
7172     for dummy in $LIBRARY_LIST; do  # N iteratios
7173         eval deps=\$${1}_deps
7174         append ${1}_deps $(map 'eval echo \$${v}_deps' $deps)
7175         unique ${1}_deps
7176         eval '[ ${#deps} = ${#'${1}_deps'} ]' && break  # doesn't expand anymore
7177     done
7178
7179     eval is_in $1 \$${1}_deps && die "Dependency cycle at ${1}_deps"
7180     reorder_by ${1}_deps LIBRARY_LIST  # linking order is expected later
7181 }
7182
7183 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
7184 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
7185
7186 map 'expand_deps $v' $LIBRARY_LIST
7187
7188 if test "$quiet" != "yes"; then
7189
7190 echo "install prefix            $prefix"
7191 echo "source path               $source_path"
7192 echo "C compiler                $cc"
7193 echo "C library                 $libc_type"
7194 if test "$host_cc" != "$cc"; then
7195     echo "host C compiler           $host_cc"
7196     echo "host C library            $host_libc_type"
7197 fi
7198 echo "ARCH                      $arch ($cpu)"
7199 if test "$build_suffix" != ""; then
7200     echo "build suffix              $build_suffix"
7201 fi
7202 if test "$progs_suffix" != ""; then
7203     echo "progs suffix              $progs_suffix"
7204 fi
7205 if test "$extra_version" != ""; then
7206     echo "version string suffix     $extra_version"
7207 fi
7208 echo "big-endian                ${bigendian-no}"
7209 echo "runtime cpu detection     ${runtime_cpudetect-no}"
7210 if enabled x86; then
7211     echo "standalone assembly       ${x86asm-no}"
7212     echo "x86 assembler             ${x86asmexe}"
7213     echo "MMX enabled               ${mmx-no}"
7214     echo "MMXEXT enabled            ${mmxext-no}"
7215     echo "3DNow! enabled            ${amd3dnow-no}"
7216     echo "3DNow! extended enabled   ${amd3dnowext-no}"
7217     echo "SSE enabled               ${sse-no}"
7218     echo "SSSE3 enabled             ${ssse3-no}"
7219     echo "AESNI enabled             ${aesni-no}"
7220     echo "AVX enabled               ${avx-no}"
7221     echo "AVX2 enabled              ${avx2-no}"
7222     echo "AVX-512 enabled           ${avx512-no}"
7223     echo "XOP enabled               ${xop-no}"
7224     echo "FMA3 enabled              ${fma3-no}"
7225     echo "FMA4 enabled              ${fma4-no}"
7226     echo "i686 features enabled     ${i686-no}"
7227     echo "CMOV is fast              ${fast_cmov-no}"
7228     echo "EBX available             ${ebx_available-no}"
7229     echo "EBP available             ${ebp_available-no}"
7230 fi
7231 if enabled aarch64; then
7232     echo "NEON enabled              ${neon-no}"
7233     echo "VFP enabled               ${vfp-no}"
7234 fi
7235 if enabled arm; then
7236     echo "ARMv5TE enabled           ${armv5te-no}"
7237     echo "ARMv6 enabled             ${armv6-no}"
7238     echo "ARMv6T2 enabled           ${armv6t2-no}"
7239     echo "VFP enabled               ${vfp-no}"
7240     echo "NEON enabled              ${neon-no}"
7241     echo "THUMB enabled             ${thumb-no}"
7242 fi
7243 if enabled mips; then
7244     echo "MIPS FPU enabled          ${mipsfpu-no}"
7245     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
7246     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
7247     echo "MIPS MSA enabled          ${msa-no}"
7248     echo "MIPS MSA2 enabled         ${msa2-no}"
7249     echo "LOONGSON MMI enabled      ${mmi-no}"
7250 fi
7251 if enabled ppc; then
7252     echo "AltiVec enabled           ${altivec-no}"
7253     echo "VSX enabled               ${vsx-no}"
7254     echo "POWER8 enabled            ${power8-no}"
7255     echo "PPC 4xx optimizations     ${ppc4xx-no}"
7256     echo "dcbzl available           ${dcbzl-no}"
7257 fi
7258 echo "debug symbols             ${debug-no}"
7259 echo "strip symbols             ${stripping-no}"
7260 echo "optimize for size         ${small-no}"
7261 echo "optimizations             ${optimizations-no}"
7262 echo "static                    ${static-no}"
7263 echo "shared                    ${shared-no}"
7264 echo "postprocessing support    ${postproc-no}"
7265 echo "network support           ${network-no}"
7266 echo "threading support         ${thread_type-no}"
7267 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
7268 echo "texi2html enabled         ${texi2html-no}"
7269 echo "perl enabled              ${perl-no}"
7270 echo "pod2man enabled           ${pod2man-no}"
7271 echo "makeinfo enabled          ${makeinfo-no}"
7272 echo "makeinfo supports HTML    ${makeinfo_html-no}"
7273 test -n "$random_seed" &&
7274     echo "random seed               ${random_seed}"
7275 echo
7276
7277 echo "External libraries:"
7278 print_enabled '' $EXTERNAL_LIBRARY_LIST $EXTERNAL_AUTODETECT_LIBRARY_LIST | print_in_columns
7279 echo
7280
7281 echo "External libraries providing hardware acceleration:"
7282 print_enabled '' $HWACCEL_LIBRARY_LIST $HWACCEL_AUTODETECT_LIBRARY_LIST | print_in_columns
7283 echo
7284
7285 echo "Libraries:"
7286 print_enabled '' $LIBRARY_LIST | print_in_columns
7287 echo
7288
7289 echo "Programs:"
7290 print_enabled '' $PROGRAM_LIST | print_in_columns
7291 echo
7292
7293 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
7294     echo "Enabled ${type}s:"
7295     eval list=\$$(toupper $type)_LIST
7296     print_enabled '_*' $list | print_in_columns
7297     echo
7298 done
7299
7300 if test -n "$ignore_tests"; then
7301     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
7302     echo "Ignored FATE tests:"
7303     echo $ignore_tests | print_in_columns
7304     echo
7305 fi
7306
7307 echo "License: $license"
7308
7309 fi # test "$quiet" != "yes"
7310
7311 if test -n "$WARN_IF_GETS_DISABLED_LIST"; then
7312     for cfg in $WARN_IF_GETS_DISABLED_LIST; do
7313         if disabled $cfg; then
7314             varname=${cfg}_disable_reason
7315             eval "warn \"Disabled $cfg because \$$varname\""
7316         fi
7317     done
7318 fi
7319
7320 if test -n "$WARNINGS"; then
7321     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
7322     enabled fatal_warnings && exit 1
7323 fi
7324
7325 test -e Makefile || echo "include $source_path/Makefile" > Makefile
7326
7327 esc(){
7328     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
7329 }
7330
7331 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
7332
7333 enabled stripping || strip="echo skipping strip"
7334 enabled stripping || striptype=""
7335
7336 config_files="$TMPH ffbuild/config.mak doc/config.texi"
7337
7338 cat > ffbuild/config.mak <<EOF
7339 # Automatically generated by configure - do not modify!
7340 ifndef FFMPEG_CONFIG_MAK
7341 FFMPEG_CONFIG_MAK=1
7342 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
7343 prefix=$prefix
7344 LIBDIR=\$(DESTDIR)$libdir
7345 SHLIBDIR=\$(DESTDIR)$shlibdir
7346 INCDIR=\$(DESTDIR)$incdir
7347 BINDIR=\$(DESTDIR)$bindir
7348 DATADIR=\$(DESTDIR)$datadir
7349 DOCDIR=\$(DESTDIR)$docdir
7350 MANDIR=\$(DESTDIR)$mandir
7351 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
7352 INSTALL_NAME_DIR=$install_name_dir
7353 SRC_PATH=$source_path
7354 SRC_LINK=$source_link
7355 ifndef MAIN_MAKEFILE
7356 SRC_PATH:=\$(SRC_PATH:.%=..%)
7357 endif
7358 CC_IDENT=$cc_ident
7359 ARCH=$arch
7360 INTRINSICS=$intrinsics
7361 EXTERN_PREFIX=$extern_prefix
7362 CC=$cc
7363 CXX=$cxx
7364 AS=$as
7365 OBJCC=$objcc
7366 LD=$ld
7367 DEPCC=$dep_cc
7368 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
7369 DEPAS=$as
7370 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
7371 X86ASM=$x86asmexe
7372 DEPX86ASM=$x86asmexe
7373 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
7374 AR=$ar
7375 ARFLAGS=$arflags
7376 AR_O=$ar_o
7377 AR_CMD=$ar
7378 NM_CMD=$nm
7379 RANLIB=$ranlib
7380 STRIP=$strip
7381 STRIPTYPE=$striptype
7382 NVCC=$nvcc
7383 CP=cp -p
7384 LN_S=$ln_s
7385 CPPFLAGS=$CPPFLAGS
7386 CFLAGS=$CFLAGS
7387 CXXFLAGS=$CXXFLAGS
7388 OBJCFLAGS=$OBJCFLAGS
7389 ASFLAGS=$ASFLAGS
7390 NVCCFLAGS=$nvccflags
7391 AS_C=$AS_C
7392 AS_O=$AS_O
7393 OBJCC_C=$OBJCC_C
7394 OBJCC_E=$OBJCC_E
7395 OBJCC_O=$OBJCC_O
7396 CC_C=$CC_C
7397 CC_E=$CC_E
7398 CC_O=$CC_O
7399 CXX_C=$CXX_C
7400 CXX_O=$CXX_O
7401 NVCC_C=$NVCC_C
7402 NVCC_O=$NVCC_O
7403 LD_O=$LD_O
7404 X86ASM_O=$X86ASM_O
7405 LD_LIB=$LD_LIB
7406 LD_PATH=$LD_PATH
7407 DLLTOOL=$dlltool
7408 WINDRES=$windres
7409 DEPWINDRES=$dep_cc
7410 DOXYGEN=$doxygen
7411 LDFLAGS=$LDFLAGS
7412 LDEXEFLAGS=$LDEXEFLAGS
7413 LDSOFLAGS=$LDSOFLAGS
7414 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
7415 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
7416 X86ASMFLAGS=$X86ASMFLAGS
7417 BUILDSUF=$build_suffix
7418 PROGSSUF=$progs_suffix
7419 FULLNAME=$FULLNAME
7420 LIBPREF=$LIBPREF
7421 LIBSUF=$LIBSUF
7422 LIBNAME=$LIBNAME
7423 SLIBPREF=$SLIBPREF
7424 SLIBSUF=$SLIBSUF
7425 EXESUF=$EXESUF
7426 EXTRA_VERSION=$extra_version
7427 CCDEP=$CCDEP
7428 CXXDEP=$CXXDEP
7429 CCDEP_FLAGS=$CCDEP_FLAGS
7430 ASDEP=$ASDEP
7431 ASDEP_FLAGS=$ASDEP_FLAGS
7432 X86ASMDEP=$X86ASMDEP
7433 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
7434 CC_DEPFLAGS=$CC_DEPFLAGS
7435 AS_DEPFLAGS=$AS_DEPFLAGS
7436 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
7437 HOSTCC=$host_cc
7438 HOSTLD=$host_ld
7439 HOSTCFLAGS=$host_cflags
7440 HOSTCPPFLAGS=$host_cppflags
7441 HOSTEXESUF=$HOSTEXESUF
7442 HOSTLDFLAGS=$host_ldflags
7443 HOSTEXTRALIBS=$host_extralibs
7444 DEPHOSTCC=$host_cc
7445 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
7446 HOSTCCDEP=$HOSTCCDEP
7447 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
7448 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
7449 HOSTCC_C=$HOSTCC_C
7450 HOSTCC_O=$HOSTCC_O
7451 HOSTLD_O=$HOSTLD_O
7452 TARGET_EXEC=$target_exec $target_exec_args
7453 TARGET_PATH=$target_path
7454 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
7455 CFLAGS-ffplay=${sdl2_cflags}
7456 CFLAGS_HEADERS=$CFLAGS_HEADERS
7457 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
7458 EXTRALIBS=$extralibs
7459 COMPAT_OBJS=$compat_objs
7460 INSTALL=$install
7461 LIBTARGET=${LIBTARGET}
7462 SLIBNAME=${SLIBNAME}
7463 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
7464 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
7465 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
7466 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
7467 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
7468 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
7469 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
7470 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
7471 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
7472 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
7473 NOREDZONE_FLAGS=$noredzone_flags
7474 LIBFUZZER_PATH=$libfuzzer_path
7475 IGNORE_TESTS=$ignore_tests
7476 EOF
7477
7478 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
7479
7480 for entry in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
7481     eval echo "EXTRALIBS-${entry}=\$${entry}_extralibs" >> ffbuild/config.mak
7482 done
7483
7484 cat > $TMPH <<EOF
7485 /* Automatically generated by configure - do not modify! */
7486 #ifndef FFMPEG_CONFIG_H
7487 #define FFMPEG_CONFIG_H
7488 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
7489 #define FFMPEG_LICENSE "$(c_escape $license)"
7490 #define CONFIG_THIS_YEAR 2020
7491 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
7492 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
7493 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
7494 #define av_restrict $restrict_keyword
7495 #define EXTERN_PREFIX "${extern_prefix}"
7496 #define EXTERN_ASM ${extern_prefix}
7497 #define BUILDSUF "$build_suffix"
7498 #define SLIBSUF "$SLIBSUF"
7499 #define HAVE_MMX2 HAVE_MMXEXT
7500 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
7501 EOF
7502
7503 test -n "$assert_level" &&
7504     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
7505
7506 test -n "$malloc_prefix" &&
7507     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
7508
7509 if enabled x86asm; then
7510     append config_files $TMPASM
7511     cat > $TMPASM <<EOF
7512 ; Automatically generated by configure - do not modify!
7513 EOF
7514 fi
7515
7516 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
7517
7518
7519 mkdir -p doc
7520 mkdir -p tests
7521 mkdir -p tests/api
7522 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
7523
7524 print_config ARCH_   "$config_files" $ARCH_LIST
7525 print_config HAVE_   "$config_files" $HAVE_LIST
7526 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
7527                                      $CONFIG_EXTRA      \
7528                                      $ALL_COMPONENTS    \
7529
7530 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
7531 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
7532
7533 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
7534 cp_if_changed $TMPH config.h
7535 touch ffbuild/.config
7536
7537 enabled x86asm && cp_if_changed $TMPASM config.asm
7538
7539 cat > $TMPH <<EOF
7540 /* Generated by ffmpeg configure */
7541 #ifndef AVUTIL_AVCONFIG_H
7542 #define AVUTIL_AVCONFIG_H
7543 EOF
7544
7545 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
7546
7547 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
7548
7549 cp_if_changed $TMPH libavutil/avconfig.h
7550
7551 # full_filter_name_foo=vf_foo
7552 # full_filter_name_bar=asrc_bar
7553 # ...
7554 eval "$(sed -n "s/^extern AVFilter ff_\([avfsinkrc]\{2,5\}\)_\(.*\);/full_filter_name_\2=\1_\2/p" $source_path/libavfilter/allfilters.c)"
7555
7556 # generate the lists of enabled components
7557 print_enabled_components(){
7558     file=$1
7559     struct_name=$2
7560     name=$3
7561     shift 3
7562     echo "static const $struct_name * const $name[] = {" > $TMPH
7563     for c in $*; do
7564         if enabled $c; then
7565             case $name in
7566                 filter_list)
7567                     eval c=\$full_filter_name_${c%_filter}
7568                 ;;
7569                 indev_list)
7570                     c=${c%_indev}_demuxer
7571                 ;;
7572                 outdev_list)
7573                     c=${c%_outdev}_muxer
7574                 ;;
7575             esac
7576             printf "    &ff_%s,\n" $c >> $TMPH
7577         fi
7578     done
7579     if [ "$name" = "filter_list" ]; then
7580         for c in asrc_abuffer vsrc_buffer asink_abuffer vsink_buffer; do
7581             printf "    &ff_%s,\n" $c >> $TMPH
7582         done
7583     fi
7584     echo "    NULL };" >> $TMPH
7585     cp_if_changed $TMPH $file
7586 }
7587
7588 print_enabled_components libavfilter/filter_list.c AVFilter filter_list $FILTER_LIST
7589 print_enabled_components libavcodec/codec_list.c AVCodec codec_list $CODEC_LIST
7590 print_enabled_components libavcodec/parser_list.c AVCodecParser parser_list $PARSER_LIST
7591 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
7592 print_enabled_components libavformat/demuxer_list.c AVInputFormat demuxer_list $DEMUXER_LIST
7593 print_enabled_components libavformat/muxer_list.c AVOutputFormat muxer_list $MUXER_LIST
7594 print_enabled_components libavdevice/indev_list.c AVInputFormat indev_list $INDEV_LIST
7595 print_enabled_components libavdevice/outdev_list.c AVOutputFormat outdev_list $OUTDEV_LIST
7596 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
7597
7598 # Settings for pkg-config files
7599
7600 cat > $TMPH <<EOF
7601 # Automatically generated by configure - do not modify!
7602 shared=$shared
7603 build_suffix=$build_suffix
7604 prefix=$prefix
7605 libdir=$libdir
7606 incdir=$incdir
7607 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
7608 source_path=${source_path}
7609 LIBPREF=${LIBPREF}
7610 LIBSUF=${LIBSUF}
7611 extralibs_avutil="$avutil_extralibs"
7612 extralibs_avcodec="$avcodec_extralibs"
7613 extralibs_avformat="$avformat_extralibs"
7614 extralibs_avdevice="$avdevice_extralibs"
7615 extralibs_avfilter="$avfilter_extralibs"
7616 extralibs_avresample="$avresample_extralibs"
7617 extralibs_postproc="$postproc_extralibs"
7618 extralibs_swscale="$swscale_extralibs"
7619 extralibs_swresample="$swresample_extralibs"
7620 EOF
7621
7622 for lib in $LIBRARY_LIST; do
7623     lib_deps="$(eval echo \$${lib}_deps)"
7624     echo ${lib}_deps=\"$lib_deps\" >> $TMPH
7625 done
7626
7627 cp_if_changed $TMPH ffbuild/config.sh