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 gxf_encoder_select="pcm_rechunk_bsf"
2726 h261_decoder_select="mpegvideo"
2727 h261_encoder_select="mpegvideoenc"
2728 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2729 h263_encoder_select="h263dsp mpegvideoenc"
2730 h263i_decoder_select="h263_decoder"
2731 h263p_decoder_select="h263_decoder"
2732 h263p_encoder_select="h263_encoder"
2733 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2734 h264_decoder_suggest="error_resilience"
2735 hap_decoder_select="snappy texturedsp"
2736 hap_encoder_deps="libsnappy"
2737 hap_encoder_select="texturedspenc"
2738 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2739 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2740 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2741 hymt_decoder_select="huffyuv_decoder"
2742 iac_decoder_select="imc_decoder"
2743 imc_decoder_select="bswapdsp fft mdct sinewin"
2744 imm4_decoder_select="bswapdsp"
2745 imm5_decoder_select="h264_decoder hevc_decoder"
2746 indeo3_decoder_select="hpeldsp"
2747 indeo4_decoder_select="ividsp"
2748 indeo5_decoder_select="ividsp"
2749 interplay_video_decoder_select="hpeldsp"
2750 jpegls_decoder_select="mjpeg_decoder"
2751 jv_decoder_select="blockdsp"
2752 lagarith_decoder_select="llviddsp"
2753 ljpeg_encoder_select="idctdsp jpegtables mpegvideoenc"
2754 lscr_decoder_deps="zlib"
2755 magicyuv_decoder_select="llviddsp"
2756 magicyuv_encoder_select="llvidencdsp"
2757 mdec_decoder_select="blockdsp bswapdsp idctdsp mpegvideo"
2758 metasound_decoder_select="lsp mdct sinewin"
2759 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2760 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2761 mjpeg_encoder_select="jpegtables mpegvideoenc"
2762 mjpegb_decoder_select="mjpeg_decoder"
2763 mlp_decoder_select="mlp_parser"
2764 mlp_encoder_select="lpc audio_frame_queue"
2765 motionpixels_decoder_select="bswapdsp"
2766 mp1_decoder_select="mpegaudio"
2767 mp1float_decoder_select="mpegaudio"
2768 mp2_decoder_select="mpegaudio"
2769 mp2float_decoder_select="mpegaudio"
2770 mp3_decoder_select="mpegaudio"
2771 mp3adu_decoder_select="mpegaudio"
2772 mp3adufloat_decoder_select="mpegaudio"
2773 mp3float_decoder_select="mpegaudio"
2774 mp3on4_decoder_select="mpegaudio"
2775 mp3on4float_decoder_select="mpegaudio"
2776 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2777 mpc8_decoder_select="mpegaudiodsp"
2778 mpegvideo_decoder_select="mpegvideo"
2779 mpeg1video_decoder_select="mpegvideo"
2780 mpeg1video_encoder_select="mpegvideoenc h263dsp"
2781 mpeg2video_decoder_select="mpegvideo"
2782 mpeg2video_encoder_select="mpegvideoenc h263dsp"
2783 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2784 mpeg4_encoder_select="h263_encoder"
2785 msa1_decoder_select="mss34dsp"
2786 mscc_decoder_deps="zlib"
2787 msmpeg4v1_decoder_select="h263_decoder"
2788 msmpeg4v2_decoder_select="h263_decoder"
2789 msmpeg4v2_encoder_select="h263_encoder"
2790 msmpeg4v3_decoder_select="h263_decoder"
2791 msmpeg4v3_encoder_select="h263_encoder"
2792 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2793 mts2_decoder_select="mss34dsp"
2794 mv30_decoder_select="aandcttables blockdsp"
2795 mvha_decoder_deps="zlib"
2796 mvha_decoder_select="llviddsp"
2797 mwsc_decoder_deps="zlib"
2798 mxf_encoder_select="pcm_rechunk_bsf"
2799 mxpeg_decoder_select="mjpeg_decoder"
2800 nellymoser_decoder_select="mdct sinewin"
2801 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2802 nuv_decoder_select="idctdsp lzo"
2803 on2avc_decoder_select="mdct"
2804 opus_decoder_deps="swresample"
2805 opus_decoder_select="mdct15"
2806 opus_encoder_select="audio_frame_queue mdct15"
2807 png_decoder_deps="zlib"
2808 png_encoder_deps="zlib"
2809 png_encoder_select="llvidencdsp"
2810 prores_decoder_select="blockdsp idctdsp"
2811 prores_encoder_select="fdctdsp"
2812 qcelp_decoder_select="lsp"
2813 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2814 ra_144_decoder_select="audiodsp"
2815 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2816 ralf_decoder_select="golomb"
2817 rasc_decoder_deps="zlib"
2818 rawvideo_decoder_select="bswapdsp"
2819 rscc_decoder_deps="zlib"
2820 rtjpeg_decoder_select="me_cmp"
2821 rv10_decoder_select="h263_decoder"
2822 rv10_encoder_select="h263_encoder"
2823 rv20_decoder_select="h263_decoder"
2824 rv20_encoder_select="h263_encoder"
2825 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2826 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2827 screenpresso_decoder_deps="zlib"
2828 shorten_decoder_select="bswapdsp"
2829 sipr_decoder_select="lsp"
2830 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2831 snow_encoder_select="dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2832 sonic_decoder_select="golomb rangecoder"
2833 sonic_encoder_select="golomb rangecoder"
2834 sonic_ls_encoder_select="golomb rangecoder"
2835 sp5x_decoder_select="mjpeg_decoder"
2836 speedhq_decoder_select="mpegvideo"
2837 srgc_decoder_deps="zlib"
2838 svq1_decoder_select="hpeldsp"
2839 svq1_encoder_select="hpeldsp me_cmp mpegvideoenc"
2840 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2841 svq3_decoder_suggest="zlib"
2842 tak_decoder_select="audiodsp"
2843 tdsc_decoder_deps="zlib"
2844 tdsc_decoder_select="mjpeg_decoder"
2845 theora_decoder_select="vp3_decoder"
2846 thp_decoder_select="mjpeg_decoder"
2847 tiff_decoder_select="mjpeg_decoder"
2848 tiff_decoder_suggest="zlib lzma"
2849 tiff_encoder_suggest="zlib"
2850 truehd_decoder_select="mlp_parser"
2851 truehd_encoder_select="lpc audio_frame_queue"
2852 truemotion2_decoder_select="bswapdsp"
2853 truespeech_decoder_select="bswapdsp"
2854 tscc_decoder_deps="zlib"
2855 twinvq_decoder_select="mdct lsp sinewin"
2856 txd_decoder_select="texturedsp"
2857 utvideo_decoder_select="bswapdsp llviddsp"
2858 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2859 vble_decoder_select="llviddsp"
2860 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2861 vc1image_decoder_select="vc1_decoder"
2862 vorbis_decoder_select="mdct"
2863 vorbis_encoder_select="audio_frame_queue mdct"
2864 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2865 vp4_decoder_select="vp3_decoder"
2866 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2867 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2868 vp6a_decoder_select="vp6_decoder"
2869 vp6f_decoder_select="vp6_decoder"
2870 vp7_decoder_select="h264pred videodsp vp8dsp"
2871 vp8_decoder_select="h264pred videodsp vp8dsp"
2872 vp9_decoder_select="videodsp vp9_parser vp9_superframe_split_bsf"
2873 wcmv_decoder_deps="zlib"
2874 webp_decoder_select="vp8_decoder exif"
2875 wmalossless_decoder_select="llauddsp"
2876 wmapro_decoder_select="mdct sinewin wma_freqs"
2877 wmav1_decoder_select="mdct sinewin wma_freqs"
2878 wmav1_encoder_select="mdct sinewin wma_freqs"
2879 wmav2_decoder_select="mdct sinewin wma_freqs"
2880 wmav2_encoder_select="mdct sinewin wma_freqs"
2881 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2882 wmv1_decoder_select="h263_decoder"
2883 wmv1_encoder_select="h263_encoder"
2884 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2885 wmv2_encoder_select="h263_encoder wmv2dsp"
2886 wmv3_decoder_select="vc1_decoder"
2887 wmv3image_decoder_select="wmv3_decoder"
2888 xma1_decoder_select="wmapro_decoder"
2889 xma2_decoder_select="wmapro_decoder"
2890 ylc_decoder_select="bswapdsp"
2891 zerocodec_decoder_deps="zlib"
2892 zlib_decoder_deps="zlib"
2893 zlib_encoder_deps="zlib"
2894 zmbv_decoder_deps="zlib"
2895 zmbv_encoder_deps="zlib"
2896
2897 # hardware accelerators
2898 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2899 cuda_deps="ffnvcodec"
2900 cuvid_deps="ffnvcodec"
2901 d3d11va_deps="dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2902 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2903 ffnvcodec_deps_any="libdl LoadLibrary"
2904 nvdec_deps="ffnvcodec"
2905 vaapi_x11_deps="xlib"
2906 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2907 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2908 xvmc_deps="X11_extensions_XvMClib_h"
2909
2910 h263_vaapi_hwaccel_deps="vaapi"
2911 h263_vaapi_hwaccel_select="h263_decoder"
2912 h263_videotoolbox_hwaccel_deps="videotoolbox"
2913 h263_videotoolbox_hwaccel_select="h263_decoder"
2914 h264_d3d11va_hwaccel_deps="d3d11va"
2915 h264_d3d11va_hwaccel_select="h264_decoder"
2916 h264_d3d11va2_hwaccel_deps="d3d11va"
2917 h264_d3d11va2_hwaccel_select="h264_decoder"
2918 h264_dxva2_hwaccel_deps="dxva2"
2919 h264_dxva2_hwaccel_select="h264_decoder"
2920 h264_nvdec_hwaccel_deps="nvdec"
2921 h264_nvdec_hwaccel_select="h264_decoder"
2922 h264_vaapi_hwaccel_deps="vaapi"
2923 h264_vaapi_hwaccel_select="h264_decoder"
2924 h264_vdpau_hwaccel_deps="vdpau"
2925 h264_vdpau_hwaccel_select="h264_decoder"
2926 h264_videotoolbox_hwaccel_deps="videotoolbox"
2927 h264_videotoolbox_hwaccel_select="h264_decoder"
2928 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2929 hevc_d3d11va_hwaccel_select="hevc_decoder"
2930 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2931 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2932 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2933 hevc_dxva2_hwaccel_select="hevc_decoder"
2934 hevc_nvdec_hwaccel_deps="nvdec"
2935 hevc_nvdec_hwaccel_select="hevc_decoder"
2936 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2937 hevc_vaapi_hwaccel_select="hevc_decoder"
2938 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2939 hevc_vdpau_hwaccel_select="hevc_decoder"
2940 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2941 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2942 mjpeg_nvdec_hwaccel_deps="nvdec"
2943 mjpeg_nvdec_hwaccel_select="mjpeg_decoder"
2944 mjpeg_vaapi_hwaccel_deps="vaapi"
2945 mjpeg_vaapi_hwaccel_select="mjpeg_decoder"
2946 mpeg_xvmc_hwaccel_deps="xvmc"
2947 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2948 mpeg1_nvdec_hwaccel_deps="nvdec"
2949 mpeg1_nvdec_hwaccel_select="mpeg1video_decoder"
2950 mpeg1_vdpau_hwaccel_deps="vdpau"
2951 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2952 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2953 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2954 mpeg1_xvmc_hwaccel_deps="xvmc"
2955 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2956 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2957 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2958 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2959 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2960 mpeg2_dxva2_hwaccel_deps="dxva2"
2961 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2962 mpeg2_nvdec_hwaccel_deps="nvdec"
2963 mpeg2_nvdec_hwaccel_select="mpeg2video_decoder"
2964 mpeg2_vaapi_hwaccel_deps="vaapi"
2965 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2966 mpeg2_vdpau_hwaccel_deps="vdpau"
2967 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2968 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2969 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2970 mpeg2_xvmc_hwaccel_deps="xvmc"
2971 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2972 mpeg4_nvdec_hwaccel_deps="nvdec"
2973 mpeg4_nvdec_hwaccel_select="mpeg4_decoder"
2974 mpeg4_vaapi_hwaccel_deps="vaapi"
2975 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2976 mpeg4_vdpau_hwaccel_deps="vdpau"
2977 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2978 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2979 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2980 vc1_d3d11va_hwaccel_deps="d3d11va"
2981 vc1_d3d11va_hwaccel_select="vc1_decoder"
2982 vc1_d3d11va2_hwaccel_deps="d3d11va"
2983 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2984 vc1_dxva2_hwaccel_deps="dxva2"
2985 vc1_dxva2_hwaccel_select="vc1_decoder"
2986 vc1_nvdec_hwaccel_deps="nvdec"
2987 vc1_nvdec_hwaccel_select="vc1_decoder"
2988 vc1_vaapi_hwaccel_deps="vaapi"
2989 vc1_vaapi_hwaccel_select="vc1_decoder"
2990 vc1_vdpau_hwaccel_deps="vdpau"
2991 vc1_vdpau_hwaccel_select="vc1_decoder"
2992 vp8_nvdec_hwaccel_deps="nvdec"
2993 vp8_nvdec_hwaccel_select="vp8_decoder"
2994 vp8_vaapi_hwaccel_deps="vaapi"
2995 vp8_vaapi_hwaccel_select="vp8_decoder"
2996 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2997 vp9_d3d11va_hwaccel_select="vp9_decoder"
2998 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2999 vp9_d3d11va2_hwaccel_select="vp9_decoder"
3000 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
3001 vp9_dxva2_hwaccel_select="vp9_decoder"
3002 vp9_nvdec_hwaccel_deps="nvdec"
3003 vp9_nvdec_hwaccel_select="vp9_decoder"
3004 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
3005 vp9_vaapi_hwaccel_select="vp9_decoder"
3006 vp9_vdpau_hwaccel_deps="vdpau VdpPictureInfoVP9"
3007 vp9_vdpau_hwaccel_select="vp9_decoder"
3008 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
3009 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
3010 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
3011 wmv3_nvdec_hwaccel_select="vc1_nvdec_hwaccel"
3012 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
3013 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
3014
3015 # hardware-accelerated codecs
3016 omx_deps="libdl pthreads"
3017 omx_rpi_select="omx"
3018 qsv_deps="libmfx"
3019 qsvdec_select="qsv"
3020 qsvenc_select="qsv"
3021 qsvvpp_select="qsv"
3022 vaapi_encode_deps="vaapi"
3023 v4l2_m2m_deps="linux_videodev2_h sem_timedwait"
3024
3025 hwupload_cuda_filter_deps="ffnvcodec"
3026 scale_npp_filter_deps="ffnvcodec libnpp"
3027 scale_cuda_filter_deps="ffnvcodec"
3028 scale_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3029 thumbnail_cuda_filter_deps="ffnvcodec"
3030 thumbnail_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3031 transpose_npp_filter_deps="ffnvcodec libnpp"
3032 overlay_cuda_filter_deps="ffnvcodec"
3033 overlay_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3034
3035 amf_deps_any="libdl LoadLibrary"
3036 nvenc_deps="ffnvcodec"
3037 nvenc_deps_any="libdl LoadLibrary"
3038 nvenc_encoder_deps="nvenc"
3039
3040 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
3041 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
3042 h264_amf_encoder_deps="amf"
3043 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
3044 h264_cuvid_decoder_deps="cuvid"
3045 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
3046 h264_mediacodec_decoder_deps="mediacodec"
3047 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
3048 h264_mmal_decoder_deps="mmal"
3049 h264_nvenc_encoder_deps="nvenc"
3050 h264_omx_encoder_deps="omx"
3051 h264_qsv_decoder_select="h264_mp4toannexb_bsf qsvdec"
3052 h264_qsv_encoder_select="qsvenc"
3053 h264_rkmpp_decoder_deps="rkmpp"
3054 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
3055 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
3056 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
3057 h264_v4l2m2m_decoder_select="h264_mp4toannexb_bsf"
3058 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
3059 hevc_amf_encoder_deps="amf"
3060 hevc_cuvid_decoder_deps="cuvid"
3061 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
3062 hevc_mediacodec_decoder_deps="mediacodec"
3063 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
3064 hevc_nvenc_encoder_deps="nvenc"
3065 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf qsvdec"
3066 hevc_qsv_encoder_select="hevcparse qsvenc"
3067 hevc_rkmpp_decoder_deps="rkmpp"
3068 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
3069 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
3070 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
3071 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
3072 hevc_v4l2m2m_decoder_select="hevc_mp4toannexb_bsf"
3073 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
3074 mjpeg_cuvid_decoder_deps="cuvid"
3075 mjpeg_qsv_decoder_select="qsvdec"
3076 mjpeg_qsv_encoder_deps="libmfx"
3077 mjpeg_qsv_encoder_select="qsvenc"
3078 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
3079 mjpeg_vaapi_encoder_select="cbs_jpeg jpegtables vaapi_encode"
3080 mpeg1_cuvid_decoder_deps="cuvid"
3081 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
3082 mpeg2_crystalhd_decoder_select="crystalhd"
3083 mpeg2_cuvid_decoder_deps="cuvid"
3084 mpeg2_mmal_decoder_deps="mmal"
3085 mpeg2_mediacodec_decoder_deps="mediacodec"
3086 mpeg2_qsv_decoder_select="qsvdec"
3087 mpeg2_qsv_encoder_select="qsvenc"
3088 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
3089 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
3090 mpeg4_crystalhd_decoder_select="crystalhd"
3091 mpeg4_cuvid_decoder_deps="cuvid"
3092 mpeg4_mediacodec_decoder_deps="mediacodec"
3093 mpeg4_mmal_decoder_deps="mmal"
3094 mpeg4_omx_encoder_deps="omx"
3095 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
3096 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
3097 msmpeg4_crystalhd_decoder_select="crystalhd"
3098 nvenc_h264_encoder_select="h264_nvenc_encoder"
3099 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
3100 vc1_crystalhd_decoder_select="crystalhd"
3101 vc1_cuvid_decoder_deps="cuvid"
3102 vc1_mmal_decoder_deps="mmal"
3103 vc1_qsv_decoder_select="qsvdec"
3104 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
3105 vp8_cuvid_decoder_deps="cuvid"
3106 vp8_mediacodec_decoder_deps="mediacodec"
3107 vp8_qsv_decoder_select="qsvdec"
3108 vp8_rkmpp_decoder_deps="rkmpp"
3109 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
3110 vp8_vaapi_encoder_select="vaapi_encode"
3111 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
3112 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
3113 vp9_cuvid_decoder_deps="cuvid"
3114 vp9_mediacodec_decoder_deps="mediacodec"
3115 vp9_qsv_decoder_select="qsvdec"
3116 vp9_rkmpp_decoder_deps="rkmpp"
3117 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
3118 vp9_vaapi_encoder_select="vaapi_encode"
3119 vp9_qsv_encoder_deps="libmfx MFX_CODEC_VP9"
3120 vp9_qsv_encoder_select="qsvenc"
3121 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
3122 wmv3_crystalhd_decoder_select="crystalhd"
3123
3124 # parsers
3125 aac_parser_select="adts_header"
3126 av1_parser_select="cbs_av1"
3127 h264_parser_select="golomb h264dsp h264parse"
3128 hevc_parser_select="hevcparse"
3129 mpegaudio_parser_select="mpegaudioheader"
3130 mpegvideo_parser_select="mpegvideo"
3131 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
3132 vc1_parser_select="vc1dsp"
3133
3134 # bitstream_filters
3135 aac_adtstoasc_bsf_select="adts_header"
3136 av1_frame_merge_bsf_select="cbs_av1"
3137 av1_frame_split_bsf_select="cbs_av1"
3138 av1_metadata_bsf_select="cbs_av1"
3139 eac3_core_bsf_select="ac3_parser"
3140 filter_units_bsf_select="cbs"
3141 h264_metadata_bsf_deps="const_nan"
3142 h264_metadata_bsf_select="cbs_h264"
3143 h264_redundant_pps_bsf_select="cbs_h264"
3144 hevc_metadata_bsf_select="cbs_h265"
3145 mjpeg2jpeg_bsf_select="jpegtables"
3146 mpeg2_metadata_bsf_select="cbs_mpeg2"
3147 trace_headers_bsf_select="cbs"
3148 vp9_metadata_bsf_select="cbs_vp9"
3149
3150 # external libraries
3151 aac_at_decoder_deps="audiotoolbox"
3152 aac_at_decoder_select="aac_adtstoasc_bsf"
3153 ac3_at_decoder_deps="audiotoolbox"
3154 ac3_at_decoder_select="ac3_parser"
3155 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
3156 alac_at_decoder_deps="audiotoolbox"
3157 amr_nb_at_decoder_deps="audiotoolbox"
3158 avisynth_deps_any="libdl LoadLibrary"
3159 avisynth_demuxer_deps="avisynth"
3160 avisynth_demuxer_select="riffdec"
3161 eac3_at_decoder_deps="audiotoolbox"
3162 eac3_at_decoder_select="ac3_parser"
3163 gsm_ms_at_decoder_deps="audiotoolbox"
3164 ilbc_at_decoder_deps="audiotoolbox"
3165 mp1_at_decoder_deps="audiotoolbox"
3166 mp2_at_decoder_deps="audiotoolbox"
3167 mp3_at_decoder_deps="audiotoolbox"
3168 mp1_at_decoder_select="mpegaudioheader"
3169 mp2_at_decoder_select="mpegaudioheader"
3170 mp3_at_decoder_select="mpegaudioheader"
3171 pcm_alaw_at_decoder_deps="audiotoolbox"
3172 pcm_mulaw_at_decoder_deps="audiotoolbox"
3173 qdmc_decoder_select="fft"
3174 qdmc_at_decoder_deps="audiotoolbox"
3175 qdm2_at_decoder_deps="audiotoolbox"
3176 aac_at_encoder_deps="audiotoolbox"
3177 aac_at_encoder_select="audio_frame_queue"
3178 alac_at_encoder_deps="audiotoolbox"
3179 alac_at_encoder_select="audio_frame_queue"
3180 ilbc_at_encoder_deps="audiotoolbox"
3181 ilbc_at_encoder_select="audio_frame_queue"
3182 pcm_alaw_at_encoder_deps="audiotoolbox"
3183 pcm_alaw_at_encoder_select="audio_frame_queue"
3184 pcm_mulaw_at_encoder_deps="audiotoolbox"
3185 pcm_mulaw_at_encoder_select="audio_frame_queue"
3186 chromaprint_muxer_deps="chromaprint"
3187 h264_videotoolbox_encoder_deps="pthreads"
3188 h264_videotoolbox_encoder_select="videotoolbox_encoder"
3189 hevc_videotoolbox_encoder_deps="pthreads"
3190 hevc_videotoolbox_encoder_select="videotoolbox_encoder"
3191 libaom_av1_decoder_deps="libaom"
3192 libaom_av1_encoder_deps="libaom"
3193 libaom_av1_encoder_select="extract_extradata_bsf"
3194 libaribb24_decoder_deps="libaribb24"
3195 libcelt_decoder_deps="libcelt"
3196 libcodec2_decoder_deps="libcodec2"
3197 libcodec2_encoder_deps="libcodec2"
3198 libdav1d_decoder_deps="libdav1d"
3199 libdavs2_decoder_deps="libdavs2"
3200 libfdk_aac_decoder_deps="libfdk_aac"
3201 libfdk_aac_encoder_deps="libfdk_aac"
3202 libfdk_aac_encoder_select="audio_frame_queue"
3203 libgme_demuxer_deps="libgme"
3204 libgsm_decoder_deps="libgsm"
3205 libgsm_encoder_deps="libgsm"
3206 libgsm_ms_decoder_deps="libgsm"
3207 libgsm_ms_encoder_deps="libgsm"
3208 libilbc_decoder_deps="libilbc"
3209 libilbc_encoder_deps="libilbc"
3210 libkvazaar_encoder_deps="libkvazaar"
3211 libmodplug_demuxer_deps="libmodplug"
3212 libmp3lame_encoder_deps="libmp3lame"
3213 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
3214 libopencore_amrnb_decoder_deps="libopencore_amrnb"
3215 libopencore_amrnb_encoder_deps="libopencore_amrnb"
3216 libopencore_amrnb_encoder_select="audio_frame_queue"
3217 libopencore_amrwb_decoder_deps="libopencore_amrwb"
3218 libopenh264_decoder_deps="libopenh264"
3219 libopenh264_decoder_select="h264_mp4toannexb_bsf"
3220 libopenh264_encoder_deps="libopenh264"
3221 libopenjpeg_decoder_deps="libopenjpeg"
3222 libopenjpeg_encoder_deps="libopenjpeg"
3223 libopenmpt_demuxer_deps="libopenmpt"
3224 libopus_decoder_deps="libopus"
3225 libopus_encoder_deps="libopus"
3226 libopus_encoder_select="audio_frame_queue"
3227 librav1e_encoder_deps="librav1e"
3228 librav1e_encoder_select="extract_extradata_bsf"
3229 librsvg_decoder_deps="librsvg"
3230 libshine_encoder_deps="libshine"
3231 libshine_encoder_select="audio_frame_queue"
3232 libspeex_decoder_deps="libspeex"
3233 libspeex_encoder_deps="libspeex"
3234 libspeex_encoder_select="audio_frame_queue"
3235 libtheora_encoder_deps="libtheora"
3236 libtwolame_encoder_deps="libtwolame"
3237 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
3238 libvorbis_decoder_deps="libvorbis"
3239 libvorbis_encoder_deps="libvorbis libvorbisenc"
3240 libvorbis_encoder_select="audio_frame_queue"
3241 libvpx_vp8_decoder_deps="libvpx"
3242 libvpx_vp8_encoder_deps="libvpx"
3243 libvpx_vp9_decoder_deps="libvpx"
3244 libvpx_vp9_encoder_deps="libvpx"
3245 libwavpack_encoder_deps="libwavpack"
3246 libwavpack_encoder_select="audio_frame_queue"
3247 libwebp_encoder_deps="libwebp"
3248 libwebp_anim_encoder_deps="libwebp"
3249 libx262_encoder_deps="libx262"
3250 libx264_encoder_deps="libx264"
3251 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
3252 libx264rgb_encoder_select="libx264_encoder"
3253 libx265_encoder_deps="libx265"
3254 libxavs_encoder_deps="libxavs"
3255 libxavs2_encoder_deps="libxavs2"
3256 libxvid_encoder_deps="libxvid"
3257 libzvbi_teletext_decoder_deps="libzvbi"
3258 vapoursynth_demuxer_deps="vapoursynth"
3259 videotoolbox_suggest="coreservices"
3260 videotoolbox_deps="corefoundation coremedia corevideo"
3261 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
3262
3263 # demuxers / muxers
3264 ac3_demuxer_select="ac3_parser"
3265 act_demuxer_select="riffdec"
3266 aiff_muxer_select="iso_media"
3267 asf_demuxer_select="riffdec"
3268 asf_o_demuxer_select="riffdec"
3269 asf_muxer_select="riffenc"
3270 asf_stream_muxer_select="asf_muxer"
3271 av1_demuxer_select="av1_frame_merge_bsf av1_parser"
3272 avi_demuxer_select="iso_media riffdec exif"
3273 avi_muxer_select="riffenc"
3274 caf_demuxer_select="iso_media riffdec"
3275 caf_muxer_select="iso_media"
3276 dash_muxer_select="mp4_muxer"
3277 dash_demuxer_deps="libxml2"
3278 dirac_demuxer_select="dirac_parser"
3279 dts_demuxer_select="dca_parser"
3280 dtshd_demuxer_select="dca_parser"
3281 dv_demuxer_select="dvprofile"
3282 dv_muxer_select="dvprofile"
3283 dxa_demuxer_select="riffdec"
3284 eac3_demuxer_select="ac3_parser"
3285 f4v_muxer_select="mov_muxer"
3286 fifo_muxer_deps="threads"
3287 flac_demuxer_select="flac_parser"
3288 hds_muxer_select="flv_muxer"
3289 hls_muxer_select="mpegts_muxer"
3290 hls_muxer_suggest="gcrypt openssl"
3291 image2_alias_pix_demuxer_select="image2_demuxer"
3292 image2_brender_pix_demuxer_select="image2_demuxer"
3293 ipod_muxer_select="mov_muxer"
3294 ismv_muxer_select="mov_muxer"
3295 ivf_muxer_select="av1_metadata_bsf vp9_superframe_bsf"
3296 matroska_audio_muxer_select="matroska_muxer"
3297 matroska_demuxer_select="iso_media riffdec"
3298 matroska_demuxer_suggest="bzlib lzo zlib"
3299 matroska_muxer_select="iso_media riffenc"
3300 mlp_demuxer_select="mlp_parser"
3301 mmf_muxer_select="riffenc"
3302 mov_demuxer_select="iso_media riffdec"
3303 mov_demuxer_suggest="zlib"
3304 mov_muxer_select="iso_media riffenc rtpenc_chain"
3305 mp3_demuxer_select="mpegaudio_parser"
3306 mp3_muxer_select="mpegaudioheader"
3307 mp4_muxer_select="mov_muxer"
3308 mpegts_demuxer_select="iso_media"
3309 mpegts_muxer_select="adts_muxer latm_muxer"
3310 mpegtsraw_demuxer_select="mpegts_demuxer"
3311 mxf_muxer_select="golomb"
3312 mxf_d10_muxer_select="mxf_muxer"
3313 mxf_opatom_muxer_select="mxf_muxer"
3314 nut_muxer_select="riffenc"
3315 nuv_demuxer_select="riffdec"
3316 oga_muxer_select="ogg_muxer"
3317 ogg_demuxer_select="dirac_parse"
3318 ogv_muxer_select="ogg_muxer"
3319 opus_muxer_select="ogg_muxer"
3320 psp_muxer_select="mov_muxer"
3321 rtp_demuxer_select="sdp_demuxer"
3322 rtp_muxer_select="golomb jpegtables"
3323 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3324 rtsp_demuxer_select="http_protocol rtpdec"
3325 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3326 sap_demuxer_select="sdp_demuxer"
3327 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3328 sdp_demuxer_select="rtpdec"
3329 smoothstreaming_muxer_select="ismv_muxer"
3330 spdif_demuxer_select="adts_header"
3331 spdif_muxer_select="adts_header"
3332 spx_muxer_select="ogg_muxer"
3333 swf_demuxer_suggest="zlib"
3334 tak_demuxer_select="tak_parser"
3335 truehd_demuxer_select="mlp_parser"
3336 tg2_muxer_select="mov_muxer"
3337 tgp_muxer_select="mov_muxer"
3338 vobsub_demuxer_select="mpegps_demuxer"
3339 w64_demuxer_select="wav_demuxer"
3340 w64_muxer_select="wav_muxer"
3341 wav_demuxer_select="riffdec"
3342 wav_muxer_select="riffenc"
3343 webm_chunk_muxer_select="webm_muxer"
3344 webm_muxer_select="iso_media riffenc"
3345 webm_dash_manifest_demuxer_select="matroska_demuxer"
3346 wtv_demuxer_select="mpegts_demuxer riffdec"
3347 wtv_muxer_select="mpegts_muxer riffenc"
3348 xmv_demuxer_select="riffdec"
3349 xwma_demuxer_select="riffdec"
3350
3351 # indevs / outdevs
3352 android_camera_indev_deps="android camera2ndk mediandk pthreads"
3353 android_camera_indev_extralibs="-landroid -lcamera2ndk -lmediandk"
3354 alsa_indev_deps="alsa"
3355 alsa_outdev_deps="alsa"
3356 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3357 avfoundation_indev_suggest="coregraphics applicationservices"
3358 avfoundation_indev_extralibs="-framework Foundation"
3359 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3360 caca_outdev_deps="libcaca"
3361 decklink_deps_any="libdl LoadLibrary"
3362 decklink_indev_deps="decklink threads"
3363 decklink_indev_extralibs="-lstdc++"
3364 decklink_outdev_deps="decklink threads"
3365 decklink_outdev_suggest="libklvanc"
3366 decklink_outdev_extralibs="-lstdc++"
3367 dshow_indev_deps="IBaseFilter"
3368 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3369 fbdev_indev_deps="linux_fb_h"
3370 fbdev_outdev_deps="linux_fb_h"
3371 gdigrab_indev_deps="CreateDIBSection"
3372 gdigrab_indev_extralibs="-lgdi32"
3373 gdigrab_indev_select="bmp_decoder"
3374 iec61883_indev_deps="libiec61883"
3375 jack_indev_deps="libjack"
3376 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3377 kmsgrab_indev_deps="libdrm"
3378 lavfi_indev_deps="avfilter"
3379 libcdio_indev_deps="libcdio"
3380 libdc1394_indev_deps="libdc1394"
3381 openal_indev_deps="openal"
3382 opengl_outdev_deps="opengl"
3383 opengl_outdev_suggest="sdl2"
3384 oss_indev_deps_any="sys_soundcard_h"
3385 oss_outdev_deps_any="sys_soundcard_h"
3386 pulse_indev_deps="libpulse"
3387 pulse_outdev_deps="libpulse"
3388 sdl2_outdev_deps="sdl2"
3389 sndio_indev_deps="sndio"
3390 sndio_outdev_deps="sndio"
3391 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3392 v4l2_indev_suggest="libv4l2"
3393 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3394 v4l2_outdev_suggest="libv4l2"
3395 vfwcap_indev_deps="vfw32 vfwcap_defines"
3396 xcbgrab_indev_deps="libxcb"
3397 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3398 xv_outdev_deps="xlib"
3399
3400 # protocols
3401 async_protocol_deps="threads"
3402 bluray_protocol_deps="libbluray"
3403 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3404 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl mbedtls"
3405 ffrtmpcrypt_protocol_select="tcp_protocol"
3406 ffrtmphttp_protocol_conflict="librtmp_protocol"
3407 ffrtmphttp_protocol_select="http_protocol"
3408 ftp_protocol_select="tcp_protocol"
3409 gopher_protocol_select="network"
3410 http_protocol_select="tcp_protocol"
3411 http_protocol_suggest="zlib"
3412 httpproxy_protocol_select="tcp_protocol"
3413 httpproxy_protocol_suggest="zlib"
3414 https_protocol_select="tls_protocol"
3415 https_protocol_suggest="zlib"
3416 icecast_protocol_select="http_protocol"
3417 mmsh_protocol_select="http_protocol"
3418 mmst_protocol_select="network"
3419 rtmp_protocol_conflict="librtmp_protocol"
3420 rtmp_protocol_select="tcp_protocol"
3421 rtmp_protocol_suggest="zlib"
3422 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3423 rtmpe_protocol_suggest="zlib"
3424 rtmps_protocol_conflict="librtmp_protocol"
3425 rtmps_protocol_select="tls_protocol"
3426 rtmps_protocol_suggest="zlib"
3427 rtmpt_protocol_select="ffrtmphttp_protocol"
3428 rtmpt_protocol_suggest="zlib"
3429 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3430 rtmpte_protocol_suggest="zlib"
3431 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3432 rtmpts_protocol_suggest="zlib"
3433 rtp_protocol_select="udp_protocol"
3434 schannel_conflict="openssl gnutls libtls mbedtls"
3435 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3436 sctp_protocol_select="network"
3437 securetransport_conflict="openssl gnutls libtls mbedtls"
3438 srtp_protocol_select="rtp_protocol srtp"
3439 tcp_protocol_select="network"
3440 tls_protocol_deps_any="gnutls openssl schannel securetransport libtls mbedtls"
3441 tls_protocol_select="tcp_protocol"
3442 udp_protocol_select="network"
3443 udplite_protocol_select="network"
3444 unix_protocol_deps="sys_un_h"
3445 unix_protocol_select="network"
3446
3447 # external library protocols
3448 libamqp_protocol_deps="librabbitmq"
3449 libamqp_protocol_select="network"
3450 librtmp_protocol_deps="librtmp"
3451 librtmpe_protocol_deps="librtmp"
3452 librtmps_protocol_deps="librtmp"
3453 librtmpt_protocol_deps="librtmp"
3454 librtmpte_protocol_deps="librtmp"
3455 libsmbclient_protocol_deps="libsmbclient gplv3"
3456 libsrt_protocol_deps="libsrt"
3457 libsrt_protocol_select="network"
3458 libssh_protocol_deps="libssh"
3459 libtls_conflict="openssl gnutls mbedtls"
3460 libzmq_protocol_deps="libzmq"
3461 libzmq_protocol_select="network"
3462
3463 # filters
3464 afftdn_filter_deps="avcodec"
3465 afftdn_filter_select="fft"
3466 afftfilt_filter_deps="avcodec"
3467 afftfilt_filter_select="fft"
3468 afir_filter_deps="avcodec"
3469 afir_filter_select="rdft"
3470 amovie_filter_deps="avcodec avformat"
3471 aresample_filter_deps="swresample"
3472 asr_filter_deps="pocketsphinx"
3473 ass_filter_deps="libass"
3474 atempo_filter_deps="avcodec"
3475 atempo_filter_select="rdft"
3476 avgblur_opencl_filter_deps="opencl"
3477 avgblur_vulkan_filter_deps="vulkan libglslang"
3478 azmq_filter_deps="libzmq"
3479 blackframe_filter_deps="gpl"
3480 bm3d_filter_deps="avcodec"
3481 bm3d_filter_select="dct"
3482 boxblur_filter_deps="gpl"
3483 boxblur_opencl_filter_deps="opencl gpl"
3484 bs2b_filter_deps="libbs2b"
3485 chromaber_vulkan_filter_deps="vulkan libglslang"
3486 colorkey_opencl_filter_deps="opencl"
3487 colormatrix_filter_deps="gpl"
3488 convolution_opencl_filter_deps="opencl"
3489 convolve_filter_deps="avcodec"
3490 convolve_filter_select="fft"
3491 coreimage_filter_deps="coreimage appkit"
3492 coreimage_filter_extralibs="-framework OpenGL"
3493 coreimagesrc_filter_deps="coreimage appkit"
3494 coreimagesrc_filter_extralibs="-framework OpenGL"
3495 cover_rect_filter_deps="avcodec avformat gpl"
3496 cropdetect_filter_deps="gpl"
3497 deconvolve_filter_deps="avcodec"
3498 deconvolve_filter_select="fft"
3499 deinterlace_qsv_filter_deps="libmfx"
3500 deinterlace_vaapi_filter_deps="vaapi"
3501 delogo_filter_deps="gpl"
3502 denoise_vaapi_filter_deps="vaapi"
3503 derain_filter_select="dnn"
3504 deshake_filter_select="pixelutils"
3505 deshake_opencl_filter_deps="opencl"
3506 dilation_opencl_filter_deps="opencl"
3507 dnn_processing_filter_deps="swscale"
3508 dnn_processing_filter_select="dnn"
3509 drawtext_filter_deps="libfreetype"
3510 drawtext_filter_suggest="libfontconfig libfribidi"
3511 elbg_filter_deps="avcodec"
3512 eq_filter_deps="gpl"
3513 erosion_opencl_filter_deps="opencl"
3514 fftfilt_filter_deps="avcodec"
3515 fftfilt_filter_select="rdft"
3516 fftdnoiz_filter_deps="avcodec"
3517 fftdnoiz_filter_select="fft"
3518 find_rect_filter_deps="avcodec avformat gpl"
3519 firequalizer_filter_deps="avcodec"
3520 firequalizer_filter_select="rdft"
3521 flite_filter_deps="libflite"
3522 framerate_filter_select="scene_sad"
3523 freezedetect_filter_select="scene_sad"
3524 frei0r_filter_deps="frei0r libdl"
3525 frei0r_src_filter_deps="frei0r libdl"
3526 fspp_filter_deps="gpl"
3527 headphone_filter_select="fft"
3528 histeq_filter_deps="gpl"
3529 hqdn3d_filter_deps="gpl"
3530 interlace_filter_deps="gpl"
3531 kerndeint_filter_deps="gpl"
3532 ladspa_filter_deps="ladspa libdl"
3533 lensfun_filter_deps="liblensfun version3"
3534 lv2_filter_deps="lv2"
3535 mcdeint_filter_deps="avcodec gpl"
3536 movie_filter_deps="avcodec avformat"
3537 mpdecimate_filter_deps="gpl"
3538 mpdecimate_filter_select="pixelutils"
3539 minterpolate_filter_select="scene_sad"
3540 mptestsrc_filter_deps="gpl"
3541 negate_filter_deps="lut_filter"
3542 nlmeans_opencl_filter_deps="opencl"
3543 nnedi_filter_deps="gpl"
3544 ocr_filter_deps="libtesseract"
3545 ocv_filter_deps="libopencv"
3546 openclsrc_filter_deps="opencl"
3547 overlay_opencl_filter_deps="opencl"
3548 overlay_qsv_filter_deps="libmfx"
3549 overlay_qsv_filter_select="qsvvpp"
3550 overlay_vulkan_filter_deps="vulkan libglslang"
3551 owdenoise_filter_deps="gpl"
3552 pad_opencl_filter_deps="opencl"
3553 pan_filter_deps="swresample"
3554 perspective_filter_deps="gpl"
3555 phase_filter_deps="gpl"
3556 pp7_filter_deps="gpl"
3557 pp_filter_deps="gpl postproc"
3558 prewitt_opencl_filter_deps="opencl"
3559 procamp_vaapi_filter_deps="vaapi"
3560 program_opencl_filter_deps="opencl"
3561 pullup_filter_deps="gpl"
3562 removelogo_filter_deps="avcodec avformat swscale"
3563 repeatfields_filter_deps="gpl"
3564 resample_filter_deps="avresample"
3565 roberts_opencl_filter_deps="opencl"
3566 rubberband_filter_deps="librubberband"
3567 sab_filter_deps="gpl swscale"
3568 scale2ref_filter_deps="swscale"
3569 scale_filter_deps="swscale"
3570 scale_qsv_filter_deps="libmfx"
3571 select_filter_select="scene_sad"
3572 sharpness_vaapi_filter_deps="vaapi"
3573 showcqt_filter_deps="avcodec avformat swscale"
3574 showcqt_filter_suggest="libfontconfig libfreetype"
3575 showcqt_filter_select="fft"
3576 showfreqs_filter_deps="avcodec"
3577 showfreqs_filter_select="fft"
3578 showspatial_filter_select="fft"
3579 showspectrum_filter_deps="avcodec"
3580 showspectrum_filter_select="fft"
3581 showspectrumpic_filter_deps="avcodec"
3582 showspectrumpic_filter_select="fft"
3583 signature_filter_deps="gpl avcodec avformat"
3584 sinc_filter_select="rdft"
3585 smartblur_filter_deps="gpl swscale"
3586 sobel_opencl_filter_deps="opencl"
3587 sofalizer_filter_deps="libmysofa avcodec"
3588 sofalizer_filter_select="fft"
3589 spectrumsynth_filter_deps="avcodec"
3590 spectrumsynth_filter_select="fft"
3591 spp_filter_deps="gpl avcodec"
3592 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3593 sr_filter_deps="avformat swscale"
3594 sr_filter_select="dnn"
3595 stereo3d_filter_deps="gpl"
3596 subtitles_filter_deps="avformat avcodec libass"
3597 super2xsai_filter_deps="gpl"
3598 pixfmts_super2xsai_test_deps="super2xsai_filter"
3599 superequalizer_filter_select="rdft"
3600 surround_filter_select="rdft"
3601 tinterlace_filter_deps="gpl"
3602 tinterlace_merge_test_deps="tinterlace_filter"
3603 tinterlace_pad_test_deps="tinterlace_filter"
3604 tonemap_filter_deps="const_nan"
3605 tonemap_vaapi_filter_deps="vaapi VAProcFilterParameterBufferHDRToneMapping"
3606 tonemap_opencl_filter_deps="opencl const_nan"
3607 transpose_opencl_filter_deps="opencl"
3608 transpose_vaapi_filter_deps="vaapi VAProcPipelineCaps_rotation_flags"
3609 unsharp_opencl_filter_deps="opencl"
3610 uspp_filter_deps="gpl avcodec"
3611 vaguedenoiser_filter_deps="gpl"
3612 vidstabdetect_filter_deps="libvidstab"
3613 vidstabtransform_filter_deps="libvidstab"
3614 libvmaf_filter_deps="libvmaf pthreads"
3615 zmq_filter_deps="libzmq"
3616 zoompan_filter_deps="swscale"
3617 zscale_filter_deps="libzimg const_nan"
3618 scale_vaapi_filter_deps="vaapi"
3619 scale_vulkan_filter_deps="vulkan libglslang"
3620 vpp_qsv_filter_deps="libmfx"
3621 vpp_qsv_filter_select="qsvvpp"
3622 xfade_opencl_filter_deps="opencl"
3623 yadif_cuda_filter_deps="ffnvcodec"
3624 yadif_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3625
3626 # examples
3627 avio_list_dir_deps="avformat avutil"
3628 avio_reading_deps="avformat avcodec avutil"
3629 decode_audio_example_deps="avcodec avutil"
3630 decode_video_example_deps="avcodec avutil"
3631 demuxing_decoding_example_deps="avcodec avformat avutil"
3632 encode_audio_example_deps="avcodec avutil"
3633 encode_video_example_deps="avcodec avutil"
3634 extract_mvs_example_deps="avcodec avformat avutil"
3635 filter_audio_example_deps="avfilter avutil"
3636 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3637 filtering_video_example_deps="avfilter avcodec avformat avutil"
3638 http_multiclient_example_deps="avformat avutil fork"
3639 hw_decode_example_deps="avcodec avformat avutil"
3640 metadata_example_deps="avformat avutil"
3641 muxing_example_deps="avcodec avformat avutil swscale"
3642 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3643 remuxing_example_deps="avcodec avformat avutil"
3644 resampling_audio_example_deps="avutil swresample"
3645 scaling_video_example_deps="avutil swscale"
3646 transcode_aac_example_deps="avcodec avformat swresample"
3647 transcoding_example_deps="avfilter avcodec avformat avutil"
3648 vaapi_encode_example_deps="avcodec avutil h264_vaapi_encoder"
3649 vaapi_transcode_example_deps="avcodec avformat avutil h264_vaapi_encoder"
3650
3651 # EXTRALIBS_LIST
3652 cpu_init_extralibs="pthreads_extralibs"
3653 cws2fws_extralibs="zlib_extralibs"
3654
3655 # libraries, in any order
3656 avcodec_deps="avutil"
3657 avcodec_suggest="libm"
3658 avcodec_select="null_bsf"
3659 avdevice_deps="avformat avcodec avutil"
3660 avdevice_suggest="libm"
3661 avfilter_deps="avutil"
3662 avfilter_suggest="libm"
3663 avformat_deps="avcodec avutil"
3664 avformat_suggest="libm network zlib"
3665 avresample_deps="avutil"
3666 avresample_suggest="libm"
3667 avutil_suggest="clock_gettime ffnvcodec libm libdrm libmfx opencl user32 vaapi vulkan videotoolbox corefoundation corevideo coremedia bcrypt"
3668 postproc_deps="avutil gpl"
3669 postproc_suggest="libm"
3670 swresample_deps="avutil"
3671 swresample_suggest="libm libsoxr"
3672 swscale_deps="avutil"
3673 swscale_suggest="libm"
3674
3675 avcodec_extralibs="pthreads_extralibs iconv_extralibs dxva2_extralibs"
3676 avfilter_extralibs="pthreads_extralibs"
3677 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3678
3679 # programs
3680 ffmpeg_deps="avcodec avfilter avformat"
3681 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3682                hflip_filter null_filter
3683                transpose_filter trim_filter vflip_filter"
3684 ffmpeg_suggest="ole32 psapi shell32"
3685 ffplay_deps="avcodec avformat swscale swresample sdl2"
3686 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3687 ffplay_suggest="shell32"
3688 ffprobe_deps="avcodec avformat"
3689 ffprobe_suggest="shell32"
3690
3691 # documentation
3692 podpages_deps="perl"
3693 manpages_deps="perl pod2man"
3694 htmlpages_deps="perl"
3695 htmlpages_deps_any="makeinfo_html texi2html"
3696 txtpages_deps="perl makeinfo"
3697 doc_deps_any="manpages htmlpages podpages txtpages"
3698
3699 # default parameters
3700
3701 logfile="ffbuild/config.log"
3702
3703 # installation paths
3704 prefix_default="/usr/local"
3705 bindir_default='${prefix}/bin'
3706 datadir_default='${prefix}/share/ffmpeg'
3707 docdir_default='${prefix}/share/doc/ffmpeg'
3708 incdir_default='${prefix}/include'
3709 libdir_default='${prefix}/lib'
3710 mandir_default='${prefix}/share/man'
3711
3712 # toolchain
3713 ar_default="ar"
3714 cc_default="gcc"
3715 cxx_default="g++"
3716 host_cc_default="gcc"
3717 doxygen_default="doxygen"
3718 install="install"
3719 ln_s_default="ln -s -f"
3720 nm_default="nm -g"
3721 pkg_config_default=pkg-config
3722 ranlib_default="ranlib"
3723 strip_default="strip"
3724 version_script='--version-script'
3725 objformat="elf32"
3726 x86asmexe_default="nasm"
3727 windres_default="windres"
3728 striptype="direct"
3729
3730 # OS
3731 target_os_default=$(tolower $(uname -s))
3732 host_os=$target_os_default
3733
3734 # machine
3735 if test "$target_os_default" = aix; then
3736     arch_default=$(uname -p)
3737     strip_default="strip -X32_64"
3738     nm_default="nm -g -X32_64"
3739 else
3740     arch_default=$(uname -m)
3741 fi
3742 cpu="generic"
3743 intrinsics="none"
3744
3745 # configurable options
3746 enable $PROGRAM_LIST
3747 enable $DOCUMENT_LIST
3748 enable $EXAMPLE_LIST
3749 enable $(filter_out avresample $LIBRARY_LIST)
3750 enable stripping
3751
3752 enable asm
3753 enable debug
3754 enable doc
3755 enable faan faandct faanidct
3756 enable large_tests
3757 enable optimizations
3758 enable runtime_cpudetect
3759 enable safe_bitstream_reader
3760 enable static
3761 enable swscale_alpha
3762 enable valgrind_backtrace
3763
3764 sws_max_filter_size_default=256
3765 set_default sws_max_filter_size
3766
3767 # internal components are enabled by default
3768 enable $EXTRALIBS_LIST
3769
3770 # Avoid external, non-system, libraries getting enabled by dependency resolution
3771 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3772
3773 # build settings
3774 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3775 LIBPREF="lib"
3776 LIBSUF=".a"
3777 FULLNAME='$(NAME)$(BUILDSUF)'
3778 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3779 SLIBPREF="lib"
3780 SLIBSUF=".so"
3781 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3782 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3783 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3784 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3785 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3786 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3787 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3788
3789 asflags_filter=echo
3790 cflags_filter=echo
3791 ldflags_filter=echo
3792
3793 AS_C='-c'
3794 AS_O='-o $@'
3795 CC_C='-c'
3796 CC_E='-E -o $@'
3797 CC_O='-o $@'
3798 CXX_C='-c'
3799 CXX_O='-o $@'
3800 OBJCC_C='-c'
3801 OBJCC_E='-E -o $@'
3802 OBJCC_O='-o $@'
3803 X86ASM_O='-o $@'
3804 LD_O='-o $@'
3805 LD_LIB='-l%'
3806 LD_PATH='-L'
3807 HOSTCC_C='-c'
3808 HOSTCC_E='-E -o $@'
3809 HOSTCC_O='-o $@'
3810 HOSTLD_O='-o $@'
3811 NVCC_C='-c'
3812 NVCC_O='-o $@'
3813
3814 host_extralibs='-lm'
3815 host_cflags_filter=echo
3816 host_ldflags_filter=echo
3817
3818 target_path='$(CURDIR)'
3819
3820 # since the object filename is not given with the -MM flag, the compiler
3821 # is only able to print the basename, and we must add the path ourselves
3822 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3823 DEPFLAGS='-MM'
3824
3825 mkdir -p ffbuild
3826
3827 # find source path
3828 if test -f configure; then
3829     source_path=.
3830 elif test -f src/configure; then
3831     source_path=src
3832 else
3833     source_path=$(cd $(dirname "$0"); pwd)
3834     case "$source_path" in
3835         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3836     esac
3837     test -e "$source_path/config.h" &&
3838         die "Out of tree builds are impossible with config.h in source dir."
3839 fi
3840
3841 for v in "$@"; do
3842     r=${v#*=}
3843     l=${v%"$r"}
3844     r=$(sh_quote "$r")
3845     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3846 done
3847
3848 find_things_extern(){
3849     thing=$1
3850     pattern=$2
3851     file=$source_path/$3
3852     out=${4:-$thing}
3853     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$out/p" "$file"
3854 }
3855
3856 find_filters_extern(){
3857     file=$source_path/$1
3858     sed -n 's/^extern AVFilter ff_[avfsinkrc]\{2,5\}_\([[:alnum:]_]\{1,\}\);/\1_filter/p' $file
3859 }
3860
3861 FILTER_LIST=$(find_filters_extern libavfilter/allfilters.c)
3862 OUTDEV_LIST=$(find_things_extern muxer AVOutputFormat libavdevice/alldevices.c outdev)
3863 INDEV_LIST=$(find_things_extern demuxer AVInputFormat libavdevice/alldevices.c indev)
3864 MUXER_LIST=$(find_things_extern muxer AVOutputFormat libavformat/allformats.c)
3865 DEMUXER_LIST=$(find_things_extern demuxer AVInputFormat libavformat/allformats.c)
3866 ENCODER_LIST=$(find_things_extern encoder AVCodec libavcodec/allcodecs.c)
3867 DECODER_LIST=$(find_things_extern decoder AVCodec libavcodec/allcodecs.c)
3868 CODEC_LIST="
3869     $ENCODER_LIST
3870     $DECODER_LIST
3871 "
3872 PARSER_LIST=$(find_things_extern parser AVCodecParser libavcodec/parsers.c)
3873 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3874 HWACCEL_LIST=$(find_things_extern hwaccel AVHWAccel libavcodec/hwaccels.h)
3875 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3876
3877 AVCODEC_COMPONENTS_LIST="
3878     $BSF_LIST
3879     $DECODER_LIST
3880     $ENCODER_LIST
3881     $HWACCEL_LIST
3882     $PARSER_LIST
3883 "
3884
3885 AVDEVICE_COMPONENTS_LIST="
3886     $INDEV_LIST
3887     $OUTDEV_LIST
3888 "
3889
3890 AVFILTER_COMPONENTS_LIST="
3891     $FILTER_LIST
3892 "
3893
3894 AVFORMAT_COMPONENTS_LIST="
3895     $DEMUXER_LIST
3896     $MUXER_LIST
3897     $PROTOCOL_LIST
3898 "
3899
3900 ALL_COMPONENTS="
3901     $AVCODEC_COMPONENTS_LIST
3902     $AVDEVICE_COMPONENTS_LIST
3903     $AVFILTER_COMPONENTS_LIST
3904     $AVFORMAT_COMPONENTS_LIST
3905 "
3906
3907 for n in $COMPONENT_LIST; do
3908     v=$(toupper ${n%s})_LIST
3909     eval enable \$$v
3910     eval ${n}_if_any="\$$v"
3911 done
3912
3913 enable $ARCH_EXT_LIST
3914
3915 die_unknown(){
3916     echo "Unknown option \"$1\"."
3917     echo "See $0 --help for available options."
3918     exit 1
3919 }
3920
3921 print_in_columns() {
3922     tr ' ' '\n' | sort | tr '\r\n' '  ' | awk -v col_width=24 -v width="$ncols" '
3923     {
3924         num_cols = width > col_width ? int(width / col_width) : 1;
3925         num_rows = int((NF + num_cols-1) / num_cols);
3926         y = x = 1;
3927         for (y = 1; y <= num_rows; y++) {
3928             i = y;
3929             for (x = 1; x <= num_cols; x++) {
3930                 if (i <= NF) {
3931                   line = sprintf("%s%-" col_width "s", line, $i);
3932                 }
3933                 i = i + num_rows;
3934             }
3935             print line; line = "";
3936         }
3937     }' | sed 's/ *$//'
3938 }
3939
3940 show_list() {
3941     suffix=_$1
3942     shift
3943     echo $* | sed s/$suffix//g | print_in_columns
3944     exit 0
3945 }
3946
3947 rand_list(){
3948     IFS=', '
3949     set -- $*
3950     unset IFS
3951     for thing; do
3952         comp=${thing%:*}
3953         prob=${thing#$comp}
3954         prob=${prob#:}
3955         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3956         echo "prob ${prob:-0.5}"
3957         printf '%s\n' $comp
3958     done
3959 }
3960
3961 do_random(){
3962     action=$1
3963     shift
3964     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3965     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3966 }
3967
3968 for opt do
3969     optval="${opt#*=}"
3970     case "$opt" in
3971         --extra-ldflags=*)
3972             add_ldflags $optval
3973         ;;
3974         --extra-ldexeflags=*)
3975             add_ldexeflags $optval
3976         ;;
3977         --extra-ldsoflags=*)
3978             add_ldsoflags $optval
3979         ;;
3980         --extra-ldlibflags=*)
3981             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3982                  "removed in the future. Use --extra-ldsoflags instead."
3983             add_ldsoflags $optval
3984         ;;
3985         --extra-libs=*)
3986             add_extralibs $optval
3987         ;;
3988         --disable-devices)
3989             disable $INDEV_LIST $OUTDEV_LIST
3990         ;;
3991         --enable-debug=*)
3992             debuglevel="$optval"
3993         ;;
3994         --disable-programs)
3995             disable $PROGRAM_LIST
3996         ;;
3997         --disable-everything)
3998             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3999         ;;
4000         --disable-all)
4001             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
4002             disable $LIBRARY_LIST $PROGRAM_LIST doc
4003             enable avutil
4004         ;;
4005         --enable-random|--disable-random)
4006             action=${opt%%-random}
4007             do_random ${action#--} $COMPONENT_LIST
4008         ;;
4009         --enable-random=*|--disable-random=*)
4010             action=${opt%%-random=*}
4011             do_random ${action#--} $optval
4012         ;;
4013         --enable-sdl)
4014             enable sdl2
4015         ;;
4016         --enable-*=*|--disable-*=*)
4017             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
4018             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
4019             eval list=\$$(toupper $thing)_LIST
4020             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
4021             list=$(filter "$name" $list)
4022             [ "$list" = "" ] && warn "Option $opt did not match anything"
4023             test $action = enable && warn_if_gets_disabled $list
4024             $action $list
4025         ;;
4026         --enable-yasm|--disable-yasm)
4027             warn "The ${opt} option is only provided for compatibility and will be\n"\
4028                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
4029             test $opt = --enable-yasm && x86asm=yes || x86asm=no
4030         ;;
4031         --yasmexe=*)
4032             warn "The --yasmexe option is only provided for compatibility and will be\n"\
4033                  "removed in the future. Use --x86asmexe instead."
4034             x86asmexe="$optval"
4035         ;;
4036         --enable-?*|--disable-?*)
4037             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
4038             if is_in $option $COMPONENT_LIST; then
4039                 test $action = disable && action=unset
4040                 eval $action \$$(toupper ${option%s})_LIST
4041             elif is_in $option $CMDLINE_SELECT; then
4042                 $action $option
4043             else
4044                 die_unknown $opt
4045             fi
4046         ;;
4047         --list-*)
4048             NAME="${opt#--list-}"
4049             is_in $NAME $COMPONENT_LIST || die_unknown $opt
4050             NAME=${NAME%s}
4051             eval show_list $NAME \$$(toupper $NAME)_LIST
4052         ;;
4053         --help|-h) show_help
4054         ;;
4055         --quiet|-q) quiet=yes
4056         ;;
4057         --fatal-warnings) enable fatal_warnings
4058         ;;
4059         --libfuzzer=*)
4060             libfuzzer_path="$optval"
4061         ;;
4062         *)
4063             optname="${opt%%=*}"
4064             optname="${optname#--}"
4065             optname=$(echo "$optname" | sed 's/-/_/g')
4066             if is_in $optname $CMDLINE_SET; then
4067                 eval $optname='$optval'
4068             elif is_in $optname $CMDLINE_APPEND; then
4069                 append $optname "$optval"
4070             else
4071                 die_unknown $opt
4072             fi
4073         ;;
4074     esac
4075 done
4076
4077 for e in $env; do
4078     eval "export $e"
4079 done
4080
4081 if disabled autodetect; then
4082
4083     # Unless iconv is explicitely disabled by the user, we still want to probe
4084     # for the iconv from the libc.
4085     disabled iconv || enable libc_iconv
4086
4087     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
4088     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
4089 fi
4090 # Mark specifically enabled, but normally autodetected libraries as requested.
4091 for lib in $AUTODETECT_LIBS; do
4092     enabled $lib && request $lib
4093 done
4094 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
4095 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
4096 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
4097
4098 disabled logging && logfile=/dev/null
4099
4100 # command line configuration sanity checks
4101
4102 # we need to build at least one lib type
4103 if ! enabled_any static shared; then
4104     cat <<EOF
4105 At least one library type must be built.
4106 Specify --enable-static to build the static libraries or --enable-shared to
4107 build the shared libraries as well. To only build the shared libraries specify
4108 --disable-static in addition to --enable-shared.
4109 EOF
4110     exit 1
4111 fi
4112
4113 die_license_disabled() {
4114     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
4115 }
4116
4117 die_license_disabled_gpl() {
4118     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
4119 }
4120
4121 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
4122 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
4123
4124 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
4125 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
4126
4127 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4128
4129 if enabled nonfree; then
4130     license="nonfree and unredistributable"
4131 elif enabled gplv3; then
4132     license="GPL version 3 or later"
4133 elif enabled lgplv3; then
4134     license="LGPL version 3 or later"
4135 elif enabled gpl; then
4136     license="GPL version 2 or later"
4137 else
4138     license="LGPL version 2.1 or later"
4139 fi
4140
4141 enabled_all gnutls openssl &&
4142     die "GnuTLS and OpenSSL must not be enabled at the same time."
4143
4144 enabled_all gnutls mbedtls &&
4145     die "GnuTLS and mbedTLS must not be enabled at the same time."
4146
4147 enabled_all openssl mbedtls &&
4148     die "OpenSSL and mbedTLS must not be enabled at the same time."
4149
4150 # Disable all the library-specific components if the library itself
4151 # is disabled, see AVCODEC_LIST and following _LIST variables.
4152
4153 disable_components(){
4154     disabled ${1} && disable $(
4155         eval components="\$$(toupper ${1})_COMPONENTS"
4156         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
4157     )
4158 }
4159
4160 map 'disable_components $v' $LIBRARY_LIST
4161
4162 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
4163 set >> $logfile
4164
4165 test -n "$valgrind" && toolchain="valgrind-memcheck"
4166
4167 enabled ossfuzz && ! echo $CFLAGS | grep -q -- "-fsanitize="  && ! echo $CFLAGS | grep -q -- "-fcoverage-mapping" &&{
4168     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
4169     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
4170 }
4171
4172 case "$toolchain" in
4173     *-asan)
4174         cc_default="${toolchain%-asan}"
4175         add_cflags  -fsanitize=address
4176         add_ldflags -fsanitize=address
4177     ;;
4178     *-msan)
4179         cc_default="${toolchain%-msan}"
4180         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
4181         add_ldflags -fsanitize=memory
4182     ;;
4183     *-tsan)
4184         cc_default="${toolchain%-tsan}"
4185         add_cflags  -fsanitize=thread
4186         add_ldflags -fsanitize=thread
4187         case "$toolchain" in
4188             gcc-tsan)
4189                 add_cflags  -fPIC
4190                 add_ldflags -fPIC
4191                 ;;
4192         esac
4193     ;;
4194     *-usan)
4195         cc_default="${toolchain%-usan}"
4196         add_cflags  -fsanitize=undefined
4197         add_ldflags -fsanitize=undefined
4198     ;;
4199     valgrind-*)
4200         target_exec_default="valgrind"
4201         case "$toolchain" in
4202             valgrind-massif)
4203                 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"
4204                 ;;
4205             valgrind-memcheck)
4206                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
4207                 ;;
4208         esac
4209     ;;
4210     msvc)
4211         # Check whether the current MSVC version needs the C99 converter.
4212         # From MSVC 2013 (compiler major version 18) onwards, it does actually
4213         # support enough of C99 to build ffmpeg. Default to the new
4214         # behaviour if the regexp was unable to match anything, since this
4215         # successfully parses the version number of existing supported
4216         # versions that require the converter (MSVC 2010 and 2012).
4217         cl_major_ver=$(cl.exe 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
4218         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
4219             cc_default="cl.exe"
4220             cxx_default="cl.exe"
4221         else
4222             die "Unsupported MSVC version (2013 or newer required)"
4223         fi
4224         ld_default="$source_path/compat/windows/mslink"
4225         nm_default="dumpbin.exe -symbols"
4226         ar_default="lib.exe"
4227         case "$arch" in
4228         aarch64|arm64)
4229             as_default="armasm64.exe"
4230             ;;
4231         arm*)
4232             as_default="armasm.exe"
4233             ;;
4234         esac
4235         target_os_default="win32"
4236         # Use a relative path for TMPDIR. This makes sure all the
4237         # ffconf temp files are written with a relative path, avoiding
4238         # issues with msys/win32 path conversion for MSVC parameters
4239         # such as -Fo<file> or -out:<file>.
4240         TMPDIR=.
4241     ;;
4242     icl)
4243         cc_default="icl"
4244         ld_default="xilink"
4245         nm_default="dumpbin -symbols"
4246         ar_default="xilib"
4247         target_os_default="win32"
4248         TMPDIR=.
4249     ;;
4250     gcov)
4251         add_cflags  -fprofile-arcs -ftest-coverage
4252         add_ldflags -fprofile-arcs -ftest-coverage
4253     ;;
4254     llvm-cov)
4255         add_cflags -fprofile-arcs -ftest-coverage
4256         add_ldflags --coverage
4257     ;;
4258     hardened)
4259         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
4260         add_cflags   -fno-strict-overflow -fstack-protector-all
4261         add_ldflags  -Wl,-z,relro -Wl,-z,now
4262         add_cflags   -fPIE
4263         add_ldexeflags -fPIE -pie
4264     ;;
4265     ?*)
4266         die "Unknown toolchain $toolchain"
4267     ;;
4268 esac
4269
4270 if test -n "$cross_prefix"; then
4271     test -n "$arch" && test -n "$target_os" ||
4272         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
4273     enable cross_compile
4274 fi
4275
4276 set_default target_os
4277 if test "$target_os" = android; then
4278     cc_default="clang"
4279 fi
4280
4281 ar_default="${cross_prefix}${ar_default}"
4282 cc_default="${cross_prefix}${cc_default}"
4283 cxx_default="${cross_prefix}${cxx_default}"
4284 nm_default="${cross_prefix}${nm_default}"
4285 pkg_config_default="${cross_prefix}${pkg_config_default}"
4286 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
4287     ranlib_default="${cross_prefix}${ranlib_default} -D"
4288 else
4289     ranlib_default="${cross_prefix}${ranlib_default}"
4290 fi
4291 strip_default="${cross_prefix}${strip_default}"
4292 windres_default="${cross_prefix}${windres_default}"
4293
4294 sysinclude_default="${sysroot}/usr/include"
4295
4296 if enabled cuda_sdk; then
4297     warn "Option --enable-cuda-sdk is deprecated. Use --enable-cuda-nvcc instead."
4298     enable cuda_nvcc
4299 fi
4300
4301 if enabled cuda_nvcc; then
4302     nvcc_default="nvcc"
4303     nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
4304 else
4305     nvcc_default="clang"
4306     nvccflags_default="--cuda-gpu-arch=sm_30 -O2"
4307     NVCC_C=""
4308 fi
4309
4310 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
4311     target_exec x86asmexe nvcc
4312 enabled cross_compile || host_cc_default=$cc
4313 set_default host_cc
4314
4315 pkg_config_fail_message=""
4316 if ! $pkg_config --version >/dev/null 2>&1; then
4317     warn "$pkg_config not found, library detection may fail."
4318     pkg_config=false
4319 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
4320     pkg_config_fail_message="
4321 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
4322 fi
4323
4324 if test $doxygen != $doxygen_default && \
4325   ! $doxygen --version >/dev/null 2>&1; then
4326     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
4327 fi
4328
4329 exesuf() {
4330     case $1 in
4331         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
4332     esac
4333 }
4334
4335 EXESUF=$(exesuf $target_os)
4336 HOSTEXESUF=$(exesuf $host_os)
4337
4338 # set temporary file name
4339 : ${TMPDIR:=$TEMPDIR}
4340 : ${TMPDIR:=$TMP}
4341 : ${TMPDIR:=/tmp}
4342
4343 if [ -n "$tempprefix" ] ; then
4344     mktemp(){
4345         tmpname="$tempprefix.${HOSTNAME}.${UID}"
4346         echo "$tmpname"
4347         mkdir "$tmpname"
4348     }
4349 elif ! test_cmd mktemp -u XXXXXX; then
4350     # simple replacement for missing mktemp
4351     # NOT SAFE FOR GENERAL USE
4352     mktemp(){
4353         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
4354         echo "$tmpname"
4355         mkdir "$tmpname"
4356     }
4357 fi
4358
4359 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
4360     die "Unable to create temporary directory in $TMPDIR."
4361
4362 tmpfile(){
4363     tmp="${FFTMPDIR}/test"$2
4364     (set -C; exec > $tmp) 2> /dev/null ||
4365         die "Unable to create temporary file in $FFTMPDIR."
4366     eval $1=$tmp
4367 }
4368
4369 trap 'rm -rf -- "$FFTMPDIR"' EXIT
4370 trap 'exit 2' INT
4371
4372 tmpfile TMPASM .asm
4373 tmpfile TMPC   .c
4374 tmpfile TMPCPP .cpp
4375 tmpfile TMPE   $EXESUF
4376 tmpfile TMPH   .h
4377 tmpfile TMPM   .m
4378 tmpfile TMPCU  .cu
4379 tmpfile TMPO   .o
4380 tmpfile TMPS   .S
4381 tmpfile TMPSH  .sh
4382 tmpfile TMPV   .ver
4383
4384 unset -f mktemp
4385
4386 chmod +x $TMPE
4387
4388 # make sure we can execute files in $TMPDIR
4389 cat > $TMPSH 2>> $logfile <<EOF
4390 #! /bin/sh
4391 EOF
4392 chmod +x $TMPSH >> $logfile 2>&1
4393 if ! $TMPSH >> $logfile 2>&1; then
4394     cat <<EOF
4395 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
4396 variable to another directory and make sure that it is not mounted noexec.
4397 EOF
4398     die "Sanity test failed."
4399 fi
4400
4401 armasm_flags(){
4402     for flag; do
4403         case $flag in
4404             # Filter out MSVC cl.exe options from cflags that shouldn't
4405             # be passed to gas-preprocessor
4406             -M[TD]*)                                            ;;
4407             *)                  echo $flag                      ;;
4408         esac
4409    done
4410 }
4411
4412 cparser_flags(){
4413     for flag; do
4414         case $flag in
4415             -Wno-switch)             echo -Wno-switch-enum ;;
4416             -Wno-format-zero-length) ;;
4417             -Wdisabled-optimization) ;;
4418             -Wno-pointer-sign)       echo -Wno-other ;;
4419             *)                       echo $flag ;;
4420         esac
4421     done
4422 }
4423
4424 msvc_common_flags(){
4425     for flag; do
4426         case $flag in
4427             # In addition to specifying certain flags under the compiler
4428             # specific filters, they must be specified here as well or else the
4429             # generic catch all at the bottom will print the original flag.
4430             -Wall)                ;;
4431             -Wextra)              ;;
4432             -std=c*)              ;;
4433             # Common flags
4434             -fomit-frame-pointer) ;;
4435             -g)                   echo -Z7 ;;
4436             -fno-math-errno)      ;;
4437             -fno-common)          ;;
4438             -fno-signed-zeros)    ;;
4439             -fPIC)                ;;
4440             -mthumb)              ;;
4441             -march=*)             ;;
4442             -lz)                  echo zlib.lib ;;
4443             -lx264)               echo libx264.lib ;;
4444             -lstdc++)             ;;
4445             -l*)                  echo ${flag#-l}.lib ;;
4446             -LARGEADDRESSAWARE)   echo $flag ;;
4447             -L*)                  echo -libpath:${flag#-L} ;;
4448             -Wl,*)                ;;
4449             *)                    echo $flag ;;
4450         esac
4451     done
4452 }
4453
4454 msvc_flags(){
4455     msvc_common_flags "$@"
4456     for flag; do
4457         case $flag in
4458             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4459                                        -wd4554 ;;
4460             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4461                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4462                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4463                                        -wd4307 \
4464                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4465         esac
4466     done
4467 }
4468
4469 icl_flags(){
4470     msvc_common_flags "$@"
4471     for flag; do
4472         case $flag in
4473             # Despite what Intel's documentation says -Wall, which is supported
4474             # on Windows, does enable remarks so disable them here.
4475             -Wall)                echo $flag -Qdiag-disable:remark ;;
4476             -std=c99)             echo -Qstd=c99 ;;
4477             -flto)                echo -ipo ;;
4478         esac
4479     done
4480 }
4481
4482 icc_flags(){
4483     for flag; do
4484         case $flag in
4485             -flto)                echo -ipo ;;
4486             *)                    echo $flag ;;
4487         esac
4488     done
4489 }
4490
4491 suncc_flags(){
4492     for flag; do
4493         case $flag in
4494             -march=*|-mcpu=*)
4495                 case "${flag#*=}" in
4496                     native)                   echo -xtarget=native       ;;
4497                     v9|niagara)               echo -xarch=sparc          ;;
4498                     ultrasparc)               echo -xarch=sparcvis       ;;
4499                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4500                     i586|pentium)             echo -xchip=pentium        ;;
4501                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4502                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4503                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4504                     pentium4*)          echo -xtarget=pentium4           ;;
4505                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4506                     *-sse3)             echo -xarch=sse3                 ;;
4507                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4508                     bonnell)                   echo -xarch=ssse3         ;;
4509                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4510                     westmere)                  echo -xtarget=westmere    ;;
4511                     silvermont)                echo -xarch=sse4_2        ;;
4512                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4513                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4514                                                echo -xarch=avx           ;;
4515                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4516                     btver1)                    echo -xarch=amdsse4a      ;;
4517                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4518                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4519                     k8|opteron|athlon64|athlon-fx)
4520                                                echo -xarch=sse2a         ;;
4521                     athlon*)                   echo -xarch=pentium_proa  ;;
4522                 esac
4523                 ;;
4524             -std=c99)             echo -xc99              ;;
4525             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4526             -fPIC)                echo -KPIC -xcode=pic32 ;;
4527             -W*,*)                echo $flag              ;;
4528             -f*-*|-W*|-mimpure-text)                      ;;
4529             -shared)              echo -G                 ;;
4530             *)                    echo $flag              ;;
4531         esac
4532     done
4533 }
4534
4535 probe_cc(){
4536     pfx=$1
4537     _cc=$2
4538     first=$3
4539
4540     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4541     unset _ld_o _ldflags _ld_lib _ld_path
4542     unset _depflags _DEPCMD _DEPFLAGS
4543     _flags_filter=echo
4544
4545     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4546         true # no-op to avoid reading stdin in following checks
4547     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4548         _type=llvm_gcc
4549         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4550         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4551         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4552         _cflags_speed='-O3'
4553         _cflags_size='-Os'
4554     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4555         _type=gcc
4556         gcc_version=$($_cc --version | head -n1)
4557         gcc_basever=$($_cc -dumpversion)
4558         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4559         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4560         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4561         case $gcc_basever in
4562             2) ;;
4563             2.*) ;;
4564             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4565         esac
4566         if [ "$first" = true ]; then
4567             case $gcc_basever in
4568                 4.2*)
4569                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4570             esac
4571         fi
4572         _cflags_speed='-O3'
4573         _cflags_size='-Os'
4574     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4575         _type=icc
4576         _ident=$($_cc --version | head -n1)
4577         _depflags='-MMD'
4578         _cflags_speed='-O3'
4579         _cflags_size='-Os'
4580         _cflags_noopt='-O1'
4581         _flags_filter=icc_flags
4582     elif $_cc -v 2>&1 | grep -q xlc; then
4583         _type=xlc
4584         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4585         _cflags_speed='-O5'
4586         _cflags_size='-O5 -qcompact'
4587     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4588         test -d "$sysroot" || die "No valid sysroot specified."
4589         _type=armcc
4590         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4591         armcc_conf="$PWD/armcc.conf"
4592         $_cc --arm_linux_configure                 \
4593              --arm_linux_config_file="$armcc_conf" \
4594              --configure_sysroot="$sysroot"        \
4595              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4596              die "Error creating armcc configuration file."
4597         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4598         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4599         as_default="${cross_prefix}gcc"
4600         _depflags='-MMD'
4601         _cflags_speed='-O3'
4602         _cflags_size='-Os'
4603     elif $_cc -v 2>&1 | grep -q clang && ! $_cc -? > /dev/null 2>&1; then
4604         _type=clang
4605         _ident=$($_cc --version 2>/dev/null | head -n1)
4606         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4607         _cflags_speed='-O3'
4608         _cflags_size='-Oz'
4609     elif $_cc -V 2>&1 | grep -q Sun; then
4610         _type=suncc
4611         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4612         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4613         _DEPFLAGS='-xM1 -xc99'
4614         _ldflags='-std=c99'
4615         _cflags_speed='-O5'
4616         _cflags_size='-O5 -xspace'
4617         _flags_filter=suncc_flags
4618     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4619         _type=pathscale
4620         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4621         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4622         _cflags_speed='-O2'
4623         _cflags_size='-Os'
4624         _flags_filter='filter_out -Wdisabled-optimization'
4625     elif $_cc -v 2>&1 | grep -q Open64; then
4626         _type=open64
4627         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4628         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4629         _cflags_speed='-O2'
4630         _cflags_size='-Os'
4631         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4632     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4633         _type=armasm
4634         _ident=$($_cc | head -n1)
4635         # 4509: "This form of conditional instruction is deprecated"
4636         _flags="-nologo -ignore 4509"
4637         _flags_filter=armasm_flags
4638     elif $_cc 2>&1 | grep -q Intel; then
4639         _type=icl
4640         _ident=$($_cc 2>&1 | head -n1)
4641         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4642         # Not only is O3 broken on 13.x+ but it is slower on all previous
4643         # versions (tested) as well.
4644         _cflags_speed="-O2"
4645         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4646         if $_cc 2>&1 | grep -q Linker; then
4647             _ld_o='-out:$@'
4648         else
4649             _ld_o='-Fe$@'
4650         fi
4651         _cc_o='-Fo$@'
4652         _cc_e='-P'
4653         _flags_filter=icl_flags
4654         _ld_lib='lib%.a'
4655         _ld_path='-libpath:'
4656         # -Qdiag-error to make icl error when seeing certain unknown arguments
4657         _flags='-nologo -Qdiag-error:4044,10157'
4658         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4659         # with MSVC which enables it by default.
4660         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4661         disable stripping
4662     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4663         # lld can emulate multiple different linkers; in ms link.exe mode,
4664         # the -? parameter gives the help output which contains an identifyable
4665         # string, while it gives an error in other modes.
4666         _type=lld-link
4667         # The link.exe mode doesn't have a switch for getting the version,
4668         # but we can force it back to gnu mode and get the version from there.
4669         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4670         _ld_o='-out:$@'
4671         _flags_filter=msvc_flags
4672         _ld_lib='lib%.a'
4673         _ld_path='-libpath:'
4674     elif $_cc -nologo- 2>&1 | grep -q Microsoft || { $_cc -v 2>&1 | grep -q clang && $_cc -? > /dev/null 2>&1; }; then
4675         _type=msvc
4676         if $_cc -nologo- 2>&1 | grep -q Microsoft; then
4677             _ident=$($_cc 2>&1 | head -n1 | tr -d '\r')
4678         else
4679             _ident=$($_cc --version 2>/dev/null | head -n1 | tr -d '\r')
4680         fi
4681         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4682         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4683         _cflags_speed="-O2"
4684         _cflags_size="-O1"
4685         _cflags_noopt="-O1"
4686         if $_cc -nologo- 2>&1 | grep -q Linker; then
4687             _ld_o='-out:$@'
4688         else
4689             _ld_o='-Fe$@'
4690         fi
4691         _cc_o='-Fo$@'
4692         _cc_e='-P -Fi$@'
4693         _flags_filter=msvc_flags
4694         _ld_lib='lib%.a'
4695         _ld_path='-libpath:'
4696         _flags='-nologo'
4697         disable stripping
4698     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4699         _type=cparser
4700         _ident=$($_cc --version | head -n1)
4701         _depflags='-MMD'
4702         _cflags_speed='-O4'
4703         _cflags_size='-O2'
4704         _flags_filter=cparser_flags
4705     fi
4706
4707     eval ${pfx}_type=\$_type
4708     eval ${pfx}_ident=\$_ident
4709 }
4710
4711 set_ccvars(){
4712     eval ${1}_C=\${_cc_c-\${${1}_C}}
4713     eval ${1}_E=\${_cc_e-\${${1}_E}}
4714     eval ${1}_O=\${_cc_o-\${${1}_O}}
4715
4716     if [ -n "$_depflags" ]; then
4717         eval ${1}_DEPFLAGS=\$_depflags
4718     else
4719         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4720         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4721         eval DEP${1}FLAGS=\$_flags
4722     fi
4723 }
4724
4725 probe_cc cc "$cc" "true"
4726 cflags_filter=$_flags_filter
4727 cflags_speed=$_cflags_speed
4728 cflags_size=$_cflags_size
4729 cflags_noopt=$_cflags_noopt
4730 add_cflags $_flags $_cflags
4731 cc_ldflags=$_ldflags
4732 set_ccvars CC
4733 set_ccvars CXX
4734
4735 probe_cc hostcc "$host_cc"
4736 host_cflags_filter=$_flags_filter
4737 host_cflags_speed=$_cflags_speed
4738 add_host_cflags  $_flags $_cflags
4739 set_ccvars HOSTCC
4740
4741 test -n "$cc_type" && enable $cc_type ||
4742     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4743
4744 : ${as_default:=$cc}
4745 : ${objcc_default:=$cc}
4746 : ${dep_cc_default:=$cc}
4747 : ${ld_default:=$cc}
4748 : ${host_ld_default:=$host_cc}
4749 set_default ar as objcc dep_cc ld ln_s host_ld windres
4750
4751 probe_cc as "$as"
4752 asflags_filter=$_flags_filter
4753 add_asflags $_flags $_cflags
4754 set_ccvars AS
4755
4756 probe_cc objcc "$objcc"
4757 objcflags_filter=$_flags_filter
4758 add_objcflags $_flags $_cflags
4759 set_ccvars OBJC
4760
4761 probe_cc ld "$ld"
4762 ldflags_filter=$_flags_filter
4763 add_ldflags $_flags $_ldflags
4764 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4765 LD_O=${_ld_o-$LD_O}
4766 LD_LIB=${_ld_lib-$LD_LIB}
4767 LD_PATH=${_ld_path-$LD_PATH}
4768
4769 probe_cc hostld "$host_ld"
4770 host_ldflags_filter=$_flags_filter
4771 add_host_ldflags $_flags $_ldflags
4772 HOSTLD_O=${_ld_o-$HOSTLD_O}
4773
4774 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4775     probe_cc depcc "$dep_cc"
4776     CCDEP=${_DEPCMD:-$DEPCMD}
4777     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4778     DEPCCFLAGS=$_flags
4779 fi
4780
4781 if $ar 2>&1 | grep -q Microsoft; then
4782     arflags="-nologo"
4783     ar_o='-out:$@'
4784 elif $ar 2>&1 | grep -q "\[D\] "; then
4785     arflags="rcD"
4786     ar_o='$@'
4787 else
4788     arflags="rc"
4789     ar_o='$@'
4790 fi
4791
4792 add_cflags $extra_cflags
4793 add_cxxflags $extra_cxxflags
4794 add_objcflags $extra_objcflags
4795 add_asflags $extra_cflags
4796
4797 if test -n "$sysroot"; then
4798     case "$cc_type" in
4799         gcc|llvm_gcc|clang)
4800             add_cppflags --sysroot="$sysroot"
4801             add_ldflags --sysroot="$sysroot"
4802         ;;
4803     esac
4804 fi
4805
4806 if test "$cpu" = host; then
4807     enabled cross_compile &&
4808         warn "--cpu=host makes no sense when cross-compiling."
4809
4810     case "$cc_type" in
4811         gcc|llvm_gcc)
4812             check_native(){
4813                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4814                 sed -n "/cc1.*$1=/{
4815                             s/.*$1=\\([^ ]*\\).*/\\1/
4816                             p
4817                             q
4818                         }" $TMPE
4819             }
4820             cpu=$(check_native -march || check_native -mcpu)
4821         ;;
4822         clang)
4823             check_native(){
4824                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4825                 sed -n "/cc1.*-target-cpu /{
4826                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4827                             p
4828                             q
4829                         }" $TMPE
4830             }
4831             cpu=$(check_native -march)
4832         ;;
4833     esac
4834
4835     test "${cpu:-host}" = host &&
4836         die "--cpu=host not supported with compiler $cc"
4837 fi
4838
4839 # Deal with common $arch aliases
4840 case "$arch" in
4841     aarch64|arm64)
4842         arch="aarch64"
4843     ;;
4844     arm*|iPad*|iPhone*)
4845         arch="arm"
4846     ;;
4847     mips*|IP*)
4848         case "$arch" in
4849         *el)
4850             add_cppflags -EL
4851             add_ldflags -EL
4852         ;;
4853         *eb)
4854             add_cppflags -EB
4855             add_ldflags -EB
4856         ;;
4857         esac
4858         arch="mips"
4859     ;;
4860     parisc*|hppa*)
4861         arch="parisc"
4862     ;;
4863     "Power Macintosh"|ppc*|powerpc*)
4864         arch="ppc"
4865     ;;
4866     s390|s390x)
4867         arch="s390"
4868     ;;
4869     sh4|sh)
4870         arch="sh4"
4871     ;;
4872     sun4*|sparc*)
4873         arch="sparc"
4874     ;;
4875     tilegx|tile-gx)
4876         arch="tilegx"
4877     ;;
4878     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4879         arch="x86"
4880     ;;
4881 esac
4882
4883 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4884 enable $arch
4885
4886 # Add processor-specific flags
4887 if enabled aarch64; then
4888
4889     case $cpu in
4890         armv*)
4891             cpuflags="-march=$cpu"
4892         ;;
4893         *)
4894             cpuflags="-mcpu=$cpu"
4895         ;;
4896     esac
4897
4898 elif enabled alpha; then
4899
4900     cpuflags="-mcpu=$cpu"
4901
4902 elif enabled arm; then
4903
4904     check_arm_arch() {
4905         test_cpp_condition stddef.h \
4906             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4907             $cpuflags
4908     }
4909
4910     probe_arm_arch() {
4911         if   check_arm_arch 4;        then echo armv4
4912         elif check_arm_arch 4T;       then echo armv4t
4913         elif check_arm_arch 5;        then echo armv5
4914         elif check_arm_arch 5E;       then echo armv5e
4915         elif check_arm_arch 5T;       then echo armv5t
4916         elif check_arm_arch 5TE;      then echo armv5te
4917         elif check_arm_arch 5TEJ;     then echo armv5te
4918         elif check_arm_arch 6;        then echo armv6
4919         elif check_arm_arch 6J;       then echo armv6j
4920         elif check_arm_arch 6K;       then echo armv6k
4921         elif check_arm_arch 6Z;       then echo armv6z
4922         elif check_arm_arch 6KZ;      then echo armv6zk
4923         elif check_arm_arch 6ZK;      then echo armv6zk
4924         elif check_arm_arch 6T2;      then echo armv6t2
4925         elif check_arm_arch 7;        then echo armv7
4926         elif check_arm_arch 7A  7_A;  then echo armv7-a
4927         elif check_arm_arch 7S;       then echo armv7-a
4928         elif check_arm_arch 7R  7_R;  then echo armv7-r
4929         elif check_arm_arch 7M  7_M;  then echo armv7-m
4930         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4931         elif check_arm_arch 8A  8_A;  then echo armv8-a
4932         fi
4933     }
4934
4935     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4936
4937     case $cpu in
4938         armv*)
4939             cpuflags="-march=$cpu"
4940             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4941         ;;
4942         *)
4943             cpuflags="-mcpu=$cpu"
4944             case $cpu in
4945                 cortex-a*)                               subarch=armv7a  ;;
4946                 cortex-r*)                               subarch=armv7r  ;;
4947                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4948                 arm11*)                                  subarch=armv6   ;;
4949                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4950                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4951                 *)                             subarch=$(probe_arm_arch) ;;
4952             esac
4953         ;;
4954     esac
4955
4956     case "$subarch" in
4957         armv5t*)    enable fast_clz                ;;
4958         armv[6-8]*)
4959             enable fast_clz
4960             disabled fast_unaligned || enable fast_unaligned
4961             ;;
4962     esac
4963
4964 elif enabled avr32; then
4965
4966     case $cpu in
4967         ap7[02]0[0-2])
4968             subarch="avr32_ap"
4969             cpuflags="-mpart=$cpu"
4970         ;;
4971         ap)
4972             subarch="avr32_ap"
4973             cpuflags="-march=$cpu"
4974         ;;
4975         uc3[ab]*)
4976             subarch="avr32_uc"
4977             cpuflags="-mcpu=$cpu"
4978         ;;
4979         uc)
4980             subarch="avr32_uc"
4981             cpuflags="-march=$cpu"
4982         ;;
4983     esac
4984
4985 elif enabled bfin; then
4986
4987     cpuflags="-mcpu=$cpu"
4988
4989 elif enabled mips; then
4990
4991     cpuflags="-march=$cpu"
4992
4993     if [ "$cpu" != "generic" ]; then
4994         disable mips32r2
4995         disable mips32r5
4996         disable mips64r2
4997         disable mips32r6
4998         disable mips64r6
4999         disable loongson2
5000         disable loongson3
5001
5002         case $cpu in
5003             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
5004                 enable mips32r2
5005                 disable msa
5006             ;;
5007             p5600|i6400|p6600)
5008                 disable mipsdsp
5009                 disable mipsdspr2
5010             ;;
5011             loongson*)
5012                 enable loongson2
5013                 enable loongson3
5014                 enable local_aligned
5015                 enable simd_align_16
5016                 enable fast_64bit
5017                 enable fast_clz
5018                 enable fast_cmov
5019                 enable fast_unaligned
5020                 disable aligned_stack
5021                 disable mipsdsp
5022                 disable mipsdspr2
5023                 # When gcc version less than 5.3.0, add -fno-expensive-optimizations flag.
5024                 if [ $cc == gcc ]; then
5025                     gcc_version=$(gcc -dumpversion)
5026                     if [ "$(echo "$gcc_version 5.3.0" | tr " " "\n" | sort -rV | head -n 1)" == "$gcc_version" ]; then
5027                         expensive_optimization_flag=""
5028                     else
5029                         expensive_optimization_flag="-fno-expensive-optimizations"
5030                     fi
5031                 fi
5032                 case $cpu in
5033                     loongson3*)
5034                         cpuflags="-march=loongson3a -mhard-float $expensive_optimization_flag"
5035                     ;;
5036                     loongson2e)
5037                         cpuflags="-march=loongson2e -mhard-float $expensive_optimization_flag"
5038                     ;;
5039                     loongson2f)
5040                         cpuflags="-march=loongson2f -mhard-float $expensive_optimization_flag"
5041                     ;;
5042                 esac
5043             ;;
5044             *)
5045                 # Unknown CPU. Disable everything.
5046                 warn "unknown CPU. Disabling all MIPS optimizations."
5047                 disable mipsfpu
5048                 disable mipsdsp
5049                 disable mipsdspr2
5050                 disable msa
5051                 disable mmi
5052             ;;
5053         esac
5054
5055         case $cpu in
5056             24kc)
5057                 disable mipsfpu
5058                 disable mipsdsp
5059                 disable mipsdspr2
5060             ;;
5061             24kf*)
5062                 disable mipsdsp
5063                 disable mipsdspr2
5064             ;;
5065             24kec|34kc|1004kc)
5066                 disable mipsfpu
5067                 disable mipsdspr2
5068             ;;
5069             24kef*|34kf*|1004kf*)
5070                 disable mipsdspr2
5071             ;;
5072             74kc)
5073                 disable mipsfpu
5074             ;;
5075             p5600)
5076                 enable mips32r5
5077                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
5078             ;;
5079             i6400)
5080                 enable mips64r6
5081                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
5082             ;;
5083             p6600)
5084                 enable mips64r6
5085                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
5086             ;;
5087         esac
5088     else
5089         # We do not disable anything. Is up to the user to disable the unwanted features.
5090         warn 'generic cpu selected'
5091     fi
5092
5093 elif enabled ppc; then
5094
5095     disable ldbrx
5096
5097     case $(tolower $cpu) in
5098         601|ppc601|powerpc601)
5099             cpuflags="-mcpu=601"
5100             disable altivec
5101         ;;
5102         603*|ppc603*|powerpc603*)
5103             cpuflags="-mcpu=603"
5104             disable altivec
5105         ;;
5106         604*|ppc604*|powerpc604*)
5107             cpuflags="-mcpu=604"
5108             disable altivec
5109         ;;
5110         g3|75*|ppc75*|powerpc75*)
5111             cpuflags="-mcpu=750"
5112             disable altivec
5113         ;;
5114         g4|745*|ppc745*|powerpc745*)
5115             cpuflags="-mcpu=7450"
5116             disable vsx
5117         ;;
5118         74*|ppc74*|powerpc74*)
5119             cpuflags="-mcpu=7400"
5120             disable vsx
5121         ;;
5122         g5|970|ppc970|powerpc970)
5123             cpuflags="-mcpu=970"
5124             disable vsx
5125         ;;
5126         power[3-6]*)
5127             cpuflags="-mcpu=$cpu"
5128             disable vsx
5129         ;;
5130         power[7-8]*)
5131             cpuflags="-mcpu=$cpu"
5132         ;;
5133         cell)
5134             cpuflags="-mcpu=cell"
5135             enable ldbrx
5136             disable vsx
5137         ;;
5138         e500mc)
5139             cpuflags="-mcpu=e500mc"
5140             disable altivec
5141         ;;
5142         e500v2)
5143             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
5144             disable altivec
5145             disable dcbzl
5146         ;;
5147         e500)
5148             cpuflags="-mcpu=8540 -mhard-float"
5149             disable altivec
5150             disable dcbzl
5151         ;;
5152     esac
5153
5154 elif enabled sparc; then
5155
5156     case $cpu in
5157         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
5158             cpuflags="-mcpu=$cpu"
5159         ;;
5160         ultrasparc*|niagara[234])
5161             cpuflags="-mcpu=$cpu"
5162         ;;
5163     esac
5164
5165 elif enabled x86; then
5166
5167     case $cpu in
5168         i[345]86|pentium)
5169             cpuflags="-march=$cpu"
5170             disable i686
5171             disable mmx
5172         ;;
5173         # targets that do NOT support nopl and conditional mov (cmov)
5174         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
5175             cpuflags="-march=$cpu"
5176             disable i686
5177         ;;
5178         # targets that do support nopl and conditional mov (cmov)
5179         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
5180         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
5181         |amdfam10|barcelona|b[dt]ver*|znver*)
5182             cpuflags="-march=$cpu"
5183             enable i686
5184             enable fast_cmov
5185         ;;
5186         # targets that do support conditional mov but on which it's slow
5187         pentium4|pentium4m|prescott|nocona)
5188             cpuflags="-march=$cpu"
5189             enable i686
5190             disable fast_cmov
5191         ;;
5192     esac
5193
5194 fi
5195
5196 if [ "$cpu" != generic ]; then
5197     add_cflags  $cpuflags
5198     add_asflags $cpuflags
5199     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
5200 fi
5201
5202 # compiler sanity check
5203 test_exec <<EOF
5204 int main(void){ return 0; }
5205 EOF
5206 if test "$?" != 0; then
5207     echo "$cc is unable to create an executable file."
5208     if test -z "$cross_prefix" && ! enabled cross_compile ; then
5209         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
5210         echo "Only do this if you know what cross compiling means."
5211     fi
5212     die "C compiler test failed."
5213 fi
5214
5215 add_cppflags -D_ISOC99_SOURCE
5216 add_cxxflags -D__STDC_CONSTANT_MACROS
5217 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
5218
5219 # some compilers silently accept -std=c11, so we also need to check that the
5220 # version macro is defined properly
5221 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
5222     add_cflags -std=c11 ||
5223     check_cflags -std=c99
5224
5225 check_cppflags -D_FILE_OFFSET_BITS=64
5226 check_cppflags -D_LARGEFILE_SOURCE
5227
5228 add_host_cppflags -D_ISOC99_SOURCE
5229 check_host_cflags -std=c99
5230 check_host_cflags -Wall
5231 check_host_cflags $host_cflags_speed
5232
5233 check_64bit(){
5234     arch32=$1
5235     arch64=$2
5236     expr=${3:-'sizeof(void *) > 4'}
5237     test_code cc "" "int test[2*($expr) - 1]" &&
5238         subarch=$arch64 || subarch=$arch32
5239     enable $subarch
5240 }
5241
5242 case "$arch" in
5243     aarch64|alpha|ia64)
5244         enabled shared && enable_weak pic
5245     ;;
5246     mips)
5247         check_64bit mips mips64 '_MIPS_SIM > 1'
5248         enabled shared && enable_weak pic
5249     ;;
5250     parisc)
5251         check_64bit parisc parisc64
5252         enabled shared && enable_weak pic
5253     ;;
5254     ppc)
5255         check_64bit ppc ppc64
5256         enabled shared && enable_weak pic
5257     ;;
5258     s390)
5259         check_64bit s390 s390x
5260         enabled shared && enable_weak pic
5261     ;;
5262     sparc)
5263         check_64bit sparc sparc64
5264         enabled shared && enable_weak pic
5265     ;;
5266     x86)
5267         check_64bit x86_32 x86_64
5268         # Treat x32 as x64 for now. Note it also needs pic if shared
5269         test "$subarch" = "x86_32" && test_cpp_condition stddef.h 'defined(__x86_64__)' &&
5270             subarch=x86_64 && enable x86_64 && disable x86_32
5271         if enabled x86_64; then
5272             enabled shared && enable_weak pic
5273             objformat=elf64
5274         fi
5275     ;;
5276 esac
5277
5278 # OS specific
5279 case $target_os in
5280     aix)
5281         SHFLAGS=-shared
5282         add_cppflags '-I\$(SRC_PATH)/compat/aix'
5283         enabled shared && add_ldflags -Wl,-brtl
5284         arflags='-Xany -r -c'
5285         striptype=""
5286         ;;
5287     android)
5288         disable symver
5289         enable section_data_rel_ro
5290         add_cflags -fPIE
5291         add_ldexeflags -fPIE -pie
5292         SLIB_INSTALL_NAME='$(SLIBNAME)'
5293         SLIB_INSTALL_LINKS=
5294         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
5295         ;;
5296     haiku)
5297         prefix_default="/boot/common"
5298         network_extralibs="-lnetwork"
5299         host_extralibs=
5300         ;;
5301     sunos)
5302         SHFLAGS='-shared -Wl,-h,$$(@F)'
5303         enabled x86 && append SHFLAGS -mimpure-text
5304         network_extralibs="-lsocket -lnsl"
5305         add_cppflags -D__EXTENSIONS__
5306         # When using suncc to build, the Solaris linker will mark
5307         # an executable with each instruction set encountered by
5308         # the Solaris assembler.  As our libraries contain their own
5309         # guards for processor-specific code, instead suppress
5310         # generation of the HWCAPS ELF section on Solaris x86 only.
5311         enabled_all suncc x86 &&
5312             echo "hwcap_1 = OVERRIDE;" > mapfile &&
5313             add_ldflags -Wl,-M,mapfile
5314         nm_default='nm -P -g'
5315         striptype=""
5316         version_script='-M'
5317         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
5318         ;;
5319     netbsd)
5320         disable symver
5321         oss_indev_extralibs="-lossaudio"
5322         oss_outdev_extralibs="-lossaudio"
5323         enabled gcc || check_ldflags -Wl,-zmuldefs
5324         ;;
5325     openbsd|bitrig)
5326         disable symver
5327         enable section_data_rel_ro
5328         striptype=""
5329         SHFLAGS='-shared'
5330         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
5331         SLIB_INSTALL_LINKS=
5332         oss_indev_extralibs="-lossaudio"
5333         oss_outdev_extralibs="-lossaudio"
5334         ;;
5335     dragonfly)
5336         disable symver
5337         ;;
5338     freebsd)
5339         ;;
5340     bsd/os)
5341         add_extralibs -lpoll -lgnugetopt
5342         strip="strip -d"
5343         ;;
5344     darwin)
5345         enabled ppc && add_asflags -force_cpusubtype_ALL
5346         install_name_dir_default='$(SHLIBDIR)'
5347         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
5348         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
5349         strip="${strip} -x"
5350         add_ldflags -Wl,-dynamic,-search_paths_first
5351         check_cflags -Werror=partial-availability
5352         SLIBSUF=".dylib"
5353         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
5354         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
5355         enabled x86_64 && objformat="macho64" || objformat="macho32"
5356         enabled_any pic shared x86_64 ||
5357             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
5358         check_headers dispatch/dispatch.h &&
5359             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
5360         if test -n "$sysroot"; then
5361             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
5362             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
5363         fi
5364         version_script='-exported_symbols_list'
5365         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
5366         # Workaround for Xcode 11 -fstack-check bug
5367         if enabled clang; then
5368             clang_version=$($cc -dumpversion)
5369             test ${clang_version%%.*} -eq 11 && add_cflags -fno-stack-check
5370         fi
5371         ;;
5372     msys*)
5373         die "Native MSYS builds are discouraged, please use the MINGW environment."
5374         ;;
5375     mingw32*|mingw64*)
5376         target_os=mingw32
5377         LIBTARGET=i386
5378         if enabled x86_64; then
5379             LIBTARGET="i386:x86-64"
5380         elif enabled arm; then
5381             LIBTARGET="arm"
5382         elif enabled aarch64; then
5383             LIBTARGET="arm64"
5384         fi
5385         if enabled shared; then
5386             # Cannot build both shared and static libs when using dllimport.
5387             disable static
5388         fi
5389         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5390         enabled x86_32 && check_ldflags -Wl,--large-address-aware
5391         shlibdir_default="$bindir_default"
5392         SLIBPREF=""
5393         SLIBSUF=".dll"
5394         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5395         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5396         if test_cmd lib.exe -list; then
5397             SLIB_EXTRA_CMD=-'lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5398             if enabled x86_64; then
5399                 LIBTARGET=x64
5400             fi
5401         else
5402             SLIB_EXTRA_CMD=-'$(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
5403         fi
5404         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5405         SLIB_INSTALL_LINKS=
5406         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5407         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5408         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5409         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--disable-auto-image-base $$(@:$(SLIBSUF)=.def)'
5410         enabled x86_64 && objformat="win64" || objformat="win32"
5411         dlltool="${cross_prefix}dlltool"
5412         ranlib=:
5413         enable dos_paths
5414         check_ldflags -Wl,--nxcompat,--dynamicbase
5415         # Lets work around some stupidity in binutils.
5416         # ld will strip relocations from executables even though we need them
5417         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
5418         # however ld then forgets what the entry point should be (oops) so we
5419         # have to manually (re)set it.
5420         if enabled x86_32; then
5421             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
5422         elif enabled x86_64; then
5423             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
5424             check_ldflags -Wl,--high-entropy-va # binutils 2.25
5425             # Set image base >4GB for extra entropy with HEASLR
5426             add_ldexeflags -Wl,--image-base,0x140000000
5427             append SHFLAGS -Wl,--image-base,0x180000000
5428         fi
5429         ;;
5430     win32|win64)
5431         disable symver
5432         if enabled shared; then
5433             # Link to the import library instead of the normal static library
5434             # for shared libs.
5435             LD_LIB='%.lib'
5436             # Cannot build both shared and static libs with MSVC or icl.
5437             disable static
5438         fi
5439         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
5440         shlibdir_default="$bindir_default"
5441         SLIBPREF=""
5442         SLIBSUF=".dll"
5443         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5444         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5445         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5446         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5447         SLIB_INSTALL_LINKS=
5448         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5449         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5450         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5451         enabled x86_64 && objformat="win64" || objformat="win32"
5452         ranlib=:
5453         enable dos_paths
5454         ;;
5455     cygwin*)
5456         target_os=cygwin
5457         shlibdir_default="$bindir_default"
5458         SLIBPREF="cyg"
5459         SLIBSUF=".dll"
5460         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5461         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5462         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5463         SLIB_INSTALL_LINKS=
5464         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5465         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5466         enabled x86_64 && objformat="win64" || objformat="win32"
5467         enable dos_paths
5468         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5469         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5470         ;;
5471     *-dos|freedos|opendos)
5472         network_extralibs="-lsocket"
5473         objformat="coff"
5474         enable dos_paths
5475         ;;
5476     linux)
5477         enable section_data_rel_ro
5478         enabled_any arm aarch64 && enable_weak linux_perf
5479         ;;
5480     irix*)
5481         target_os=irix
5482         ranlib="echo ignoring ranlib"
5483         ;;
5484     os/2*)
5485         strip="lxlite -CS"
5486         striptype=""
5487         objformat="aout"
5488         add_cppflags -D_GNU_SOURCE
5489         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5490         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5491         LIBSUF="_s.a"
5492         SLIBPREF=""
5493         SLIBSUF=".dll"
5494         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5495         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5496         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5497             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5498             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5499             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5500             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5501         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5502             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5503         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5504         SLIB_INSTALL_LINKS=
5505         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5506         enable dos_paths
5507         enable_weak os2threads
5508         ;;
5509     gnu/kfreebsd)
5510         add_cppflags -D_BSD_SOURCE
5511         ;;
5512     gnu)
5513         ;;
5514     qnx)
5515         add_cppflags -D_QNX_SOURCE
5516         network_extralibs="-lsocket"
5517         ;;
5518     symbian)
5519         SLIBSUF=".dll"
5520         enable dos_paths
5521         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5522         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5523         add_ldflags -Wl,--target1-abs,--no-undefined \
5524                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5525                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5526         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5527                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5528                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5529         ;;
5530     minix)
5531         ;;
5532     none)
5533         ;;
5534     *)
5535         die "Unknown OS '$target_os'."
5536         ;;
5537 esac
5538
5539 # test if creating links works
5540 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5541 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5542 mkdir "$link_dest"
5543 $ln_s "$link_dest" "$link_name"
5544 touch "$link_dest/test_file"
5545 if [ "$source_path" != "." ] && [ "$source_path" != "src" ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5546     # create link to source path
5547     [ -e src ] && rm src
5548     $ln_s "$source_path" src
5549     source_link=src
5550 else
5551     # creating directory links doesn't work
5552     # fall back to using the full source path
5553     source_link="$source_path"
5554 fi
5555 # cleanup
5556 rm -r "$link_dest"
5557 rm -r "$link_name"
5558
5559 # determine libc flavour
5560
5561 probe_libc(){
5562     pfx=$1
5563     pfx_no_=${pfx%_}
5564     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5565     if test_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5566         eval ${pfx}libc_type=uclibc
5567         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5568     elif test_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5569         eval ${pfx}libc_type=glibc
5570         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5571     # MinGW headers can be installed on Cygwin, so check for newlib first.
5572     elif test_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5573         eval ${pfx}libc_type=newlib
5574         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5575     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5576     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5577         eval ${pfx}libc_type=mingw64
5578         if test_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5579             add_compat msvcrt/snprintf.o
5580             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5581         fi
5582         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5583         eval test \$${pfx_no_}cc_type = "gcc" &&
5584             add_${pfx}cppflags -D__printf__=__gnu_printf__
5585         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5586             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5587         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5588     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5589          test_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5590         eval ${pfx}libc_type=mingw32
5591         test_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5592             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5593             die "ERROR: MinGW32 runtime version must be >= 3.15."
5594         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5595         test_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5596             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5597         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5598             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5599         eval test \$${pfx_no_}cc_type = "gcc" &&
5600             add_${pfx}cppflags -D__printf__=__gnu_printf__
5601         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5602     elif test_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5603         eval ${pfx}libc_type=msvcrt
5604         if test_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5605             if [ "$pfx" = host_ ]; then
5606                 add_host_cppflags -Dsnprintf=_snprintf
5607             else
5608                 add_compat strtod.o strtod=avpriv_strtod
5609                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5610                                              _snprintf=avpriv_snprintf  \
5611                                              vsnprintf=avpriv_vsnprintf
5612             fi
5613         fi
5614         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5615         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5616         # 0x601 by default unless something else is set by the user.
5617         # This can easily lead to us detecting functions only present
5618         # in such new versions and producing binaries requiring windows 7.0.
5619         # Therefore explicitly set the default to Vista unless the user has
5620         # set something else on the command line.
5621         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5622         # family. For these cases, configure is free to use any functions
5623         # found in the SDK headers by default. (Alternatively, we could force
5624         # _WIN32_WINNT to 0x0602 in that case.)
5625         test_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5626             { test_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0600; }
5627 #ifdef WINAPI_FAMILY
5628 #include <winapifamily.h>
5629 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5630 #error not desktop
5631 #endif
5632 #endif
5633 EOF
5634         if [ "$pfx" = "" ]; then
5635             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5636             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5637         fi
5638     elif test_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5639         eval ${pfx}libc_type=klibc
5640     elif test_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5641         eval ${pfx}libc_type=bionic
5642     elif test_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5643         eval ${pfx}libc_type=solaris
5644         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5645     elif test_${pfx}cpp_condition sys/version.h "defined __DJGPP__"; then
5646         eval ${pfx}libc_type=djgpp
5647         add_cppflags -U__STRICT_ANSI__
5648         add_cflags "-include $source_path/compat/djgpp/math.h"
5649         add_compat djgpp/math.o
5650     fi
5651     test_${pfx}cc <<EOF
5652 #include <time.h>
5653 void *v = localtime_r;
5654 EOF
5655 test "$?" != 0 && test_${pfx}cc -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 <<EOF && add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5656 #include <time.h>
5657 void *v = localtime_r;
5658 EOF
5659
5660     eval test -n "\${${pfx}libc_type}" && enable ${pfx}libc_${libc_type}
5661 }
5662
5663 probe_libc
5664 probe_libc host_
5665
5666 # hacks for compiler/libc/os combinations
5667
5668 case $libc_type in
5669     bionic)
5670         add_compat strtod.o strtod=avpriv_strtod
5671         ;;
5672 esac
5673
5674 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5675     add_cppflags '-I\$(SRC_PATH)/compat/float'
5676
5677 test_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5678
5679 set_default libdir
5680 : ${shlibdir_default:="$libdir"}
5681 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5682
5683 set_default $PATHS_LIST
5684 set_default nm
5685
5686 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5687
5688 enable_weak_pic() {
5689     disabled pic && return
5690     enable pic
5691     add_cppflags -DPIC
5692     case "$target_os" in
5693     mingw*|cygwin*|win*)
5694         ;;
5695     *)
5696         add_cflags -fPIC
5697         add_asflags -fPIC
5698         ;;
5699     esac
5700 }
5701
5702 enabled pic && enable_weak_pic
5703
5704 test_cc <<EOF || die "Symbol mangling check failed."
5705 int ff_extern;
5706 EOF
5707 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5708 extern_prefix=${sym%%ff_extern*}
5709
5710 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
5711
5712 for restrict_keyword in restrict __restrict__ __restrict ""; do
5713     test_code cc "" "char * $restrict_keyword p" && break
5714 done
5715
5716 check_cc pragma_deprecated "" '_Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"")'
5717
5718 # The global variable ensures the bits appear unchanged in the object file.
5719 test_cc <<EOF || die "endian test failed"
5720 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5721 EOF
5722 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5723
5724 check_cc const_nan math.h "struct { double d; } static const bar[] = { { NAN } }"
5725
5726 if ! enabled ppc64 || enabled bigendian; then
5727     disable vsx
5728 fi
5729
5730 check_gas() {
5731     log "check_gas using '$as' as AS"
5732     # :vararg is used on aarch64, arm and ppc altivec
5733     check_as vararg "
5734 .macro m n, y:vararg=0
5735 \n: .int \y
5736 .endm
5737 m x" || return 1
5738     # .altmacro is only used in arm asm
5739     ! enabled arm || check_as gnu_as ".altmacro"
5740 }
5741
5742 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5743     nogas=:
5744     enabled_any arm aarch64 && nogas=die
5745     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5746     as_noop=-v
5747
5748     case $as_type in
5749         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5750         gcc)  gaspp_as_type=gas ;;
5751         *)    gaspp_as_type=$as_type ;;
5752     esac
5753
5754     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5755
5756     test "${as#*gas-preprocessor.pl}" != "$as" ||
5757     test_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5758         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5759
5760     if ! check_gas ; then
5761         as=${gas:=$as}
5762         check_gas || \
5763             $nogas "GNU assembler not found, install/update gas-preprocessor"
5764     fi
5765
5766     check_as as_func ".func test
5767                       .endfunc"
5768 fi
5769
5770 check_inline_asm inline_asm_labels '"1:\n"'
5771
5772 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5773
5774 if enabled aarch64; then
5775     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5776     # internal assembler in clang 3.3 does not support this instruction
5777     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5778     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5779
5780     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5781
5782 elif enabled alpha; then
5783
5784     check_cflags -mieee
5785
5786 elif enabled arm; then
5787
5788     enabled msvc && check_cpp_condition thumb stddef.h "defined _M_ARMT"
5789     test_cpp_condition stddef.h "defined __thumb__" && test_cc <<EOF && enable_weak thumb
5790 float func(float a, float b){ return a+b; }
5791 EOF
5792     enabled thumb && check_cflags -mthumb || check_cflags -marm
5793
5794     if check_cpp_condition vfp_args stddef.h "defined __ARM_PCS_VFP"; then
5795         :
5796     elif check_cpp_condition vfp_args stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5797         :
5798     elif ! test_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5799         case "${cross_prefix:-$cc}" in
5800             *hardfloat*) enable vfp_args; fpabi=vfp ;;
5801             *) check_ld "cc" vfp_args <<EOF && fpabi=vfp || fpabi=soft ;;
5802 __asm__ (".eabi_attribute 28, 1");
5803 int main(void) { return 0; }
5804 EOF
5805         esac
5806         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5807     fi
5808
5809     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5810     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5811     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5812     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5813     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5814     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5815     enabled setend  && check_insn setend  'setend be'
5816
5817     [ $target_os = linux ] || [ $target_os = android ] ||
5818         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5819             $ARCH_EXT_LIST_ARM
5820
5821     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5822
5823     check_as as_arch_directive ".arch armv7-a"
5824     check_as as_dn_directive   "ra .dn d0.i16"
5825     check_as as_fpu_directive  ".fpu neon"
5826
5827     # llvm's integrated assembler supports .object_arch from llvm 3.5
5828     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5829         check_as as_object_arch ".object_arch armv4"
5830
5831     # MS armasm fails to assemble our PIC constructs
5832     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5833
5834 elif enabled mips; then
5835
5836     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5837     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5838     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5839
5840     # Enable minimum ISA based on selected options
5841     if enabled mips64; then
5842         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5843         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5844         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5845     else
5846         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5847         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5848         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5849         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5850     fi
5851
5852     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5853     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5854     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_headers msa.h || disable msa
5855     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5856     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5857     enabled msa && enabled msa2 && check_inline_asm_flags msa2 '"nxbits.any.b $w0, $w0"' '-mmsa2' && check_headers msa2.h || disable msa2
5858
5859     if enabled bigendian && enabled msa; then
5860         disable msa
5861     fi
5862
5863 elif enabled parisc; then
5864
5865     if enabled gcc; then
5866         case $($cc -dumpversion) in
5867             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5868         esac
5869     fi
5870
5871 elif enabled ppc; then
5872
5873     enable local_aligned
5874
5875     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5876     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5877     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5878     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5879
5880     if enabled altivec; then
5881         check_cflags -maltivec -mabi=altivec
5882
5883         # check if our compiler supports Motorola AltiVec C API
5884         check_cc altivec altivec.h "vector signed int v1 = (vector signed int) { 0 };
5885                                     vector signed int v2 = (vector signed int) { 1 };
5886                                     v1 = vec_add(v1, v2);"
5887
5888         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5889     fi
5890
5891     if enabled vsx; then
5892         check_cflags -mvsx &&
5893         check_cc vsx altivec.h "int v[4] = { 0 };
5894                                 vector signed int v1 = vec_vsx_ld(0, v);"
5895     fi
5896
5897     if enabled power8; then
5898         check_cpp_condition power8 "altivec.h" "defined(_ARCH_PWR8)"
5899     fi
5900
5901 elif enabled x86; then
5902
5903     check_builtin rdtsc    intrin.h   "__rdtsc()"
5904     check_builtin mm_empty mmintrin.h "_mm_empty()"
5905
5906     enable local_aligned
5907
5908     # check whether EBP is available on x86
5909     # As 'i' is stored on the stack, this program will crash
5910     # if the base pointer is used to access it because the
5911     # base pointer is cleared in the inline assembly code.
5912     check_exec_crash <<EOF && enable ebp_available
5913 volatile int i=0;
5914 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5915 return i;
5916 EOF
5917
5918     # check whether EBX is available on x86
5919     check_inline_asm ebx_available '""::"b"(0)' &&
5920         check_inline_asm ebx_available '"":::"%ebx"'
5921
5922     # check whether xmm clobbers are supported
5923     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5924
5925     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5926         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5927
5928     # check whether binutils is new enough to compile SSSE3/MMXEXT
5929     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5930     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5931
5932     probe_x86asm(){
5933         x86asmexe_probe=$1
5934         if test_cmd $x86asmexe_probe -v; then
5935             x86asmexe=$x86asmexe_probe
5936             x86asm_type=nasm
5937             x86asm_debug="-g -F dwarf"
5938             X86ASMDEP=
5939             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5940         elif test_cmd $x86asmexe_probe --version; then
5941             x86asmexe=$x86asmexe_probe
5942             x86asm_type=yasm
5943             x86asm_debug="-g dwarf2"
5944             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
5945             X86ASM_DEPFLAGS=
5946         fi
5947         check_x86asm x86asm "movbe ecx, [5]"
5948     }
5949
5950     if ! disabled_any asm mmx x86asm; then
5951         disable x86asm
5952         for program in $x86asmexe nasm yasm; do
5953             probe_x86asm $program && break
5954         done
5955         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
5956         X86ASMFLAGS="-f $objformat"
5957         enabled pic               && append X86ASMFLAGS "-DPIC"
5958         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
5959         case "$objformat" in
5960             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
5961         esac
5962
5963         enabled avx512 && check_x86asm avx512_external "vmovdqa32 [eax]{k1}{z}, zmm0"
5964         enabled avx2   && check_x86asm avx2_external   "vextracti128 xmm0, ymm0, 0"
5965         enabled xop    && check_x86asm xop_external    "vpmacsdd xmm0, xmm1, xmm2, xmm3"
5966         enabled fma4   && check_x86asm fma4_external   "vfmaddps ymm0, ymm1, ymm2, ymm3"
5967         check_x86asm cpunop          "CPU amdnop"
5968     fi
5969
5970     case "$cpu" in
5971         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5972             disable fast_clz
5973         ;;
5974     esac
5975
5976 fi
5977
5978 check_cc intrinsics_neon arm_neon.h "int16x8_t test = vdupq_n_s16(0)"
5979
5980 check_ldflags -Wl,--as-needed
5981 check_ldflags -Wl,-z,noexecstack
5982
5983 if ! disabled network; then
5984     check_func getaddrinfo $network_extralibs
5985     check_func inet_aton $network_extralibs
5986
5987     check_type netdb.h "struct addrinfo"
5988     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5989     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5990     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5991     check_type poll.h "struct pollfd"
5992     check_type netinet/sctp.h "struct sctp_event_subscribe"
5993     check_struct "sys/socket.h" "struct msghdr" msg_flags
5994     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5995     check_type netinet/in.h "struct sockaddr_in6"
5996     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5997     check_type "sys/types.h sys/socket.h" socklen_t
5998
5999     # Prefer arpa/inet.h over winsock2
6000     if check_headers arpa/inet.h ; then
6001         check_func closesocket
6002     elif check_headers winsock2.h ; then
6003         check_func_headers winsock2.h closesocket -lws2 &&
6004             network_extralibs="-lws2" ||
6005         { check_func_headers winsock2.h closesocket -lws2_32 &&
6006             network_extralibs="-lws2_32"; } || disable winsock2_h network
6007         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
6008
6009         check_type ws2tcpip.h socklen_t
6010         check_type ws2tcpip.h "struct addrinfo"
6011         check_type ws2tcpip.h "struct group_source_req"
6012         check_type ws2tcpip.h "struct ip_mreq_source"
6013         check_type ws2tcpip.h "struct ipv6_mreq"
6014         check_type winsock2.h "struct pollfd"
6015         check_struct winsock2.h "struct sockaddr" sa_len
6016         check_type ws2tcpip.h "struct sockaddr_in6"
6017         check_type ws2tcpip.h "struct sockaddr_storage"
6018     else
6019         disable network
6020     fi
6021 fi
6022
6023 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
6024 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
6025 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
6026 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
6027 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
6028 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
6029 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
6030
6031 case "$custom_allocator" in
6032     jemalloc)
6033         # jemalloc by default does not use a prefix
6034         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
6035     ;;
6036     tcmalloc)
6037         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
6038         malloc_prefix=tc_
6039     ;;
6040 esac
6041
6042 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
6043 check_func  ${malloc_prefix}memalign            && enable memalign
6044 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
6045
6046 check_func  access
6047 check_func_headers stdlib.h arc4random
6048 check_lib   clock_gettime time.h clock_gettime || check_lib clock_gettime time.h clock_gettime -lrt
6049 check_func  fcntl
6050 check_func  fork
6051 check_func  gethrtime
6052 check_func  getopt
6053 check_func  getrusage
6054 check_func  gettimeofday
6055 check_func  isatty
6056 check_func  mkstemp
6057 check_func  mmap
6058 check_func  mprotect
6059 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
6060 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
6061 check_func  sched_getaffinity
6062 check_func  setrlimit
6063 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
6064 check_func  strerror_r
6065 check_func  sysconf
6066 check_func  sysctl
6067 check_func  usleep
6068
6069 check_func_headers conio.h kbhit
6070 check_func_headers io.h setmode
6071 check_func_headers lzo/lzo1x.h lzo1x_999_compress
6072 check_func_headers mach/mach_time.h mach_absolute_time
6073 check_func_headers stdlib.h getenv
6074 check_func_headers sys/stat.h lstat
6075
6076 check_func_headers windows.h GetModuleHandle
6077 check_func_headers windows.h GetProcessAffinityMask
6078 check_func_headers windows.h GetProcessTimes
6079 check_func_headers windows.h GetStdHandle
6080 check_func_headers windows.h GetSystemTimeAsFileTime
6081 check_func_headers windows.h LoadLibrary
6082 check_func_headers windows.h MapViewOfFile
6083 check_func_headers windows.h PeekNamedPipe
6084 check_func_headers windows.h SetConsoleTextAttribute
6085 check_func_headers windows.h SetConsoleCtrlHandler
6086 check_func_headers windows.h SetDllDirectory
6087 check_func_headers windows.h Sleep
6088 check_func_headers windows.h VirtualAlloc
6089 check_func_headers glob.h glob
6090 enabled xlib &&
6091     check_lib xlib "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
6092
6093 check_headers direct.h
6094 check_headers dirent.h
6095 check_headers dxgidebug.h
6096 check_headers dxva.h
6097 check_headers dxva2api.h -D_WIN32_WINNT=0x0600
6098 check_headers io.h
6099 check_headers linux/perf_event.h
6100 check_headers libcrystalhd/libcrystalhd_if.h
6101 check_headers malloc.h
6102 check_headers net/udplite.h
6103 check_headers poll.h
6104 check_headers sys/param.h
6105 check_headers sys/resource.h
6106 check_headers sys/select.h
6107 check_headers sys/time.h
6108 check_headers sys/un.h
6109 check_headers termios.h
6110 check_headers unistd.h
6111 check_headers valgrind/valgrind.h
6112 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
6113 check_headers windows.h
6114 check_headers X11/extensions/XvMClib.h
6115 check_headers asm/types.h
6116
6117 # it seems there are versions of clang in some distros that try to use the
6118 # gcc headers, which explodes for stdatomic
6119 # so we also check that atomics actually work here
6120 check_builtin stdatomic stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0); foo += bar"
6121
6122 check_lib advapi32 "windows.h"            RegCloseKey          -ladvapi32
6123 check_lib bcrypt   "windows.h bcrypt.h"   BCryptGenRandom      -lbcrypt &&
6124     check_cpp_condition bcrypt bcrypt.h "defined BCRYPT_RNG_ALGORITHM"
6125 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
6126 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
6127 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
6128
6129 check_lib android android/native_window.h ANativeWindow_acquire -landroid
6130 check_lib mediandk "stdint.h media/NdkImage.h" AImage_delete -lmediandk
6131 check_lib camera2ndk "stdbool.h stdint.h camera/NdkCameraManager.h" ACameraManager_create -lcamera2ndk
6132
6133 enabled appkit       && check_apple_framework AppKit
6134 enabled audiotoolbox && check_apple_framework AudioToolbox
6135 enabled avfoundation && check_apple_framework AVFoundation
6136 enabled coreimage    && check_apple_framework CoreImage
6137 enabled videotoolbox && check_apple_framework VideoToolbox
6138
6139 check_apple_framework CoreFoundation
6140 check_apple_framework CoreMedia
6141 check_apple_framework CoreVideo
6142
6143 enabled avfoundation && {
6144     disable coregraphics applicationservices
6145     check_lib coregraphics        CoreGraphics/CoreGraphics.h               CGGetActiveDisplayList "-framework CoreGraphics" ||
6146     check_lib applicationservices ApplicationServices/ApplicationServices.h CGGetActiveDisplayList "-framework ApplicationServices"; }
6147
6148 enabled videotoolbox && {
6149     check_lib coreservices CoreServices/CoreServices.h UTGetOSTypeFromString "-framework CoreServices"
6150     check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_HEVC "-framework CoreMedia"
6151     check_func_headers CoreVideo/CVPixelBuffer.h kCVPixelFormatType_420YpCbCr10BiPlanarVideoRange "-framework CoreVideo"
6152     check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferTransferFunction_SMPTE_ST_2084_PQ "-framework CoreVideo"
6153     check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferTransferFunction_ITU_R_2100_HLG "-framework CoreVideo"
6154     check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferTransferFunction_Linear "-framework CoreVideo"
6155 }
6156
6157 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
6158
6159 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
6160 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
6161 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
6162 check_type "windows.h d3d11.h" "ID3D11VideoContext"
6163 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
6164
6165 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
6166 check_type "vdpau/vdpau.h" "VdpPictureInfoVP9"
6167
6168 if [ -z "$nvccflags" ]; then
6169     nvccflags=$nvccflags_default
6170 fi
6171
6172 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6173     nvccflags="$nvccflags -m64"
6174 else
6175     nvccflags="$nvccflags -m32"
6176 fi
6177
6178 if enabled cuda_nvcc; then
6179     nvccflags="$nvccflags -ptx"
6180 else
6181     nvccflags="$nvccflags -S -nocudalib -nocudainc --cuda-device-only -include ${source_link}/compat/cuda/cuda_runtime.h"
6182     check_nvcc cuda_llvm
6183 fi
6184
6185 if ! disabled ffnvcodec; then
6186     ffnv_hdr_list="ffnvcodec/nvEncodeAPI.h ffnvcodec/dynlink_cuda.h ffnvcodec/dynlink_cuviddec.h ffnvcodec/dynlink_nvcuvid.h"
6187     check_pkg_config ffnvcodec "ffnvcodec >= 9.1.23.1" "$ffnv_hdr_list" "" || \
6188       check_pkg_config ffnvcodec "ffnvcodec >= 9.0.18.3 ffnvcodec < 9.1" "$ffnv_hdr_list" "" || \
6189       check_pkg_config ffnvcodec "ffnvcodec >= 8.2.15.10 ffnvcodec < 8.3" "$ffnv_hdr_list" "" || \
6190       check_pkg_config ffnvcodec "ffnvcodec >= 8.1.24.11 ffnvcodec < 8.2" "$ffnv_hdr_list" ""
6191 fi
6192
6193 check_cpp_condition winrt windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)"
6194
6195 if ! disabled w32threads && ! enabled pthreads; then
6196     check_func_headers "windows.h process.h" _beginthreadex &&
6197         check_type "windows.h" CONDITION_VARIABLE &&
6198         check_type "windows.h" INIT_ONCE &&
6199         enable w32threads || disable w32threads
6200     if ! enabled w32threads && enabled winrt; then
6201         check_func_headers "windows.h" CreateThread &&
6202             enable w32threads || disable w32threads
6203     fi
6204 fi
6205
6206 # check for some common methods of building with pthread support
6207 # do this before the optional library checks as some of them require pthreads
6208 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
6209     if check_lib pthreads pthread.h pthread_join   -pthread &&
6210        check_lib pthreads pthread.h pthread_create -pthread; then
6211         add_cflags -pthread
6212     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
6213          check_lib pthreads pthread.h pthread_create -pthreads; then
6214         add_cflags -pthreads
6215     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
6216          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
6217         add_cflags -ldl -pthread
6218     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
6219          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
6220         :
6221     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
6222          check_lib pthreads pthread.h pthread_create -lpthread; then
6223         :
6224     elif check_func pthread_join && check_func pthread_create; then
6225         enable pthreads
6226     fi
6227     check_cc pthreads "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER"
6228
6229     if enabled pthreads; then
6230         check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
6231         check_func pthread_cancel $pthreads_extralibs
6232     fi
6233 fi
6234
6235 enabled  zlib && { check_pkg_config zlib zlib "zlib.h" zlibVersion ||
6236                    check_lib zlib   zlib.h      zlibVersion    -lz; }
6237 enabled bzlib && check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
6238 enabled  lzma && check_lib lzma   lzma.h lzma_version_number -llzma
6239
6240 # On some systems dynamic loading requires no extra linker flags
6241 check_lib libdl dlfcn.h "dlopen dlsym" || check_lib libdl dlfcn.h "dlopen dlsym" -ldl
6242
6243 check_lib libm math.h sin -lm
6244
6245 atan2f_args=2
6246 copysign_args=2
6247 hypot_args=2
6248 ldexpf_args=2
6249 powf_args=2
6250
6251 for func in $MATH_FUNCS; do
6252     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
6253 done
6254
6255 for func in $COMPLEX_FUNCS; do
6256     eval check_complexfunc $func \${${func}_args:-1}
6257 done
6258
6259 # these are off by default, so fail if requested and not available
6260 enabled avisynth          && require_headers "avisynth/avisynth_c.h"
6261 enabled cuda_nvcc         && { check_nvcc cuda_nvcc || die "ERROR: failed checking for nvcc."; }
6262 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
6263 enabled decklink          && { require_headers DeckLinkAPI.h &&
6264                                { test_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a090500" || die "ERROR: Decklink API version must be >= 10.9.5."; } }
6265 enabled frei0r            && require_headers "frei0r.h dlfcn.h"
6266 enabled gmp               && require gmp gmp.h mpz_export -lgmp
6267 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
6268 enabled jni               && { [ $target_os = "android" ] && check_headers jni.h && enabled pthreads || die "ERROR: jni not found"; }
6269 enabled ladspa            && require_headers "ladspa.h dlfcn.h"
6270 enabled libaom            && require_pkg_config libaom "aom >= 1.0.0" aom/aom_codec.h aom_codec_version
6271 enabled libaribb24        && { check_pkg_config libaribb24 "aribb24 > 1.0.3" "aribb24/aribb24.h" arib_instance_new ||
6272                                { enabled gpl && require_pkg_config libaribb24 aribb24 "aribb24/aribb24.h" arib_instance_new; } ||
6273                                die "ERROR: libaribb24 requires version higher than 1.0.3 or --enable-gpl."; }
6274 enabled lv2               && require_pkg_config lv2 lilv-0 "lilv/lilv.h" lilv_world_new
6275 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
6276 enabled libass            && require_pkg_config libass libass ass/ass.h ass_library_init
6277 enabled libbluray         && require_pkg_config libbluray libbluray libbluray/bluray.h bd_open
6278 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
6279 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
6280                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
6281                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
6282 enabled libcaca           && require_pkg_config libcaca caca caca.h caca_create_canvas
6283 enabled libcodec2         && require libcodec2 codec2/codec2.h codec2_create -lcodec2
6284 enabled libdav1d          && require_pkg_config libdav1d "dav1d >= 0.4.0" "dav1d/dav1d.h" dav1d_version
6285 enabled libdavs2          && require_pkg_config libdavs2 "davs2 >= 1.6.0" davs2.h davs2_decoder_open
6286 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
6287 enabled libdrm            && require_pkg_config libdrm libdrm xf86drm.h drmGetVersion
6288 enabled libfdk_aac        && { check_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
6289                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
6290                                  warn "using libfdk without pkg-config"; } }
6291 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"
6292 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
6293 enabled fontconfig        && enable libfontconfig
6294 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
6295 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
6296 enabled libfribidi        && require_pkg_config libfribidi fribidi fribidi.h fribidi_version_info
6297 enabled libglslang        && require_cpp libglslang glslang/SPIRV/GlslangToSpv.h "glslang::TIntermediate*" -lglslang -lOSDependent -lHLSL -lOGLCompiler -lSPVRemapper -lSPIRV -lSPIRV-Tools-opt -lSPIRV-Tools -lpthread -lstdc++
6298 enabled libgme            && { check_pkg_config libgme libgme gme/gme.h gme_new_emu ||
6299                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }
6300 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
6301                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
6302                                done || die "ERROR: libgsm not found"; }
6303 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc $pthreads_extralibs
6304 enabled libklvanc         && require libklvanc libklvanc/vanc.h klvanc_context_create -lklvanc
6305 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
6306 enabled liblensfun        && require_pkg_config liblensfun lensfun lensfun.h lf_db_new
6307 # While it may appear that require is being used as a pkg-config
6308 # fallback for libmfx, it is actually being used to detect a different
6309 # installation route altogether.  If libmfx is installed via the Intel
6310 # Media SDK or Intel Media Server Studio, these don't come with
6311 # pkg-config support.  Instead, users should make sure that the build
6312 # can find the libraries and headers through other means.
6313 enabled libmfx            && { check_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit ||
6314                                { require libmfx "mfx/mfxvideo.h" MFXInit "-llibmfx $advapi32_extralibs" && warn "using libmfx without pkg-config"; } }
6315 if enabled libmfx; then
6316    check_cc MFX_CODEC_VP9 "mfx/mfxvp9.h mfx/mfxstructures.h" "MFX_CODEC_VP9"
6317 fi
6318
6319 enabled libmodplug        && require_pkg_config libmodplug libmodplug libmodplug/modplug.h ModPlug_Load
6320 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame $libm_extralibs
6321 enabled libmysofa         && { check_pkg_config libmysofa libmysofa mysofa.h mysofa_neighborhood_init_withstepdefine ||
6322                                require libmysofa mysofa.h mysofa_neighborhood_init_withstepdefine -lmysofa $zlib_extralibs; }
6323 enabled libnpp            && { check_lib libnpp npp.h nppGetLibVersion -lnppig -lnppicc -lnppc -lnppidei ||
6324                                check_lib libnpp npp.h nppGetLibVersion -lnppi -lnppc -lnppidei ||
6325                                die "ERROR: libnpp not found"; }
6326 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
6327 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
6328 enabled libopencv         && { check_headers opencv2/core/core_c.h &&
6329                                { check_pkg_config libopencv opencv opencv2/core/core_c.h cvCreateImageHeader ||
6330                                  require libopencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
6331                                require_pkg_config libopencv opencv opencv/cxcore.h cvCreateImageHeader; }
6332 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
6333 enabled libopenjpeg       && { check_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version ||
6334                                { require_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } }
6335 enabled libopenmpt        && require_pkg_config libopenmpt "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create -lstdc++ && append libopenmpt_extralibs "-lstdc++"
6336 enabled libopus           && {
6337     enabled libopus_decoder && {
6338         require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
6339     }
6340     enabled libopus_encoder && {
6341         require_pkg_config libopus opus opus_multistream.h opus_multistream_surround_encoder_create
6342     }
6343 }
6344 enabled libpulse          && require_pkg_config libpulse libpulse pulse/pulseaudio.h pa_context_new
6345 enabled librabbitmq       && require_pkg_config librabbitmq "librabbitmq >= 0.7.1" amqp.h amqp_new_connection
6346 enabled librav1e          && require_pkg_config librav1e "rav1e >= 0.1.0" rav1e.h rav1e_context_new
6347 enabled librsvg           && require_pkg_config librsvg librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
6348 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
6349 enabled librubberband     && require_pkg_config librubberband "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new -lstdc++ && append librubberband_extralibs "-lstdc++"
6350 enabled libshine          && require_pkg_config libshine shine shine/layer3.h shine_encode_buffer
6351 enabled libsmbclient      && { check_pkg_config libsmbclient smbclient libsmbclient.h smbc_init ||
6352                                require libsmbclient libsmbclient.h smbc_init -lsmbclient; }
6353 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy -lstdc++
6354 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
6355 enabled libssh            && require_pkg_config libssh libssh libssh/sftp.h sftp_init
6356 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init
6357 enabled libsrt            && require_pkg_config libsrt "srt >= 1.3.0" srt/srt.h srt_socket
6358 enabled libtensorflow     && require libtensorflow tensorflow/c/c_api.h TF_Version -ltensorflow
6359 enabled libtesseract      && require_pkg_config libtesseract tesseract tesseract/capi.h TessBaseAPICreate
6360 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
6361 enabled libtls            && require_pkg_config libtls libtls tls.h tls_configure
6362 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
6363                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
6364                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
6365 enabled libv4l2           && require_pkg_config libv4l2 libv4l2 libv4l2.h v4l2_ioctl
6366 enabled libvidstab        && require_pkg_config libvidstab "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
6367 enabled libvmaf           && require_pkg_config libvmaf "libvmaf >= 1.3.9" libvmaf.h compute_vmaf
6368 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
6369 enabled libvorbis         && require_pkg_config libvorbis vorbis vorbis/codec.h vorbis_info_init &&
6370                              require_pkg_config libvorbisenc vorbisenc vorbis/vorbisenc.h vorbis_encode_init
6371
6372 enabled libvpx            && {
6373     enabled libvpx_vp8_decoder && {
6374         check_pkg_config libvpx_vp8_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
6375             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"
6376     }
6377     enabled libvpx_vp8_encoder && {
6378         check_pkg_config libvpx_vp8_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
6379             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"
6380     }
6381     enabled libvpx_vp9_decoder && {
6382         check_pkg_config libvpx_vp9_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
6383             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"
6384     }
6385     enabled libvpx_vp9_encoder && {
6386         check_pkg_config libvpx_vp9_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
6387             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"
6388     }
6389     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
6390         die "libvpx enabled but no supported decoders found"
6391     fi
6392 }
6393
6394 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
6395 enabled libwebp           && {
6396     enabled libwebp_encoder      && require_pkg_config libwebp "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
6397     enabled libwebp_anim_encoder && check_pkg_config libwebp_anim_encoder "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit; }
6398 enabled libx264           && { check_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode ||
6399                                { require libx264 "stdint.h x264.h" x264_encoder_encode "-lx264 $pthreads_extralibs $libm_extralibs" &&
6400                                  warn "using libx264 without pkg-config"; } } &&
6401                              require_cpp_condition libx264 x264.h "X264_BUILD >= 118" &&
6402                              check_cpp_condition libx262 x264.h "X264_MPEG2"
6403 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
6404                              require_cpp_condition libx265 x265.h "X265_BUILD >= 70"
6405 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode "-lxavs $pthreads_extralibs $libm_extralibs"
6406 enabled libxavs2          && require_pkg_config libxavs2 "xavs2 >= 1.3.0" "stdint.h xavs2.h" xavs2_api_get
6407 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
6408 enabled libzimg           && require_pkg_config libzimg "zimg >= 2.7.0" zimg.h zimg_get_api_version
6409 enabled libzmq            && require_pkg_config libzmq "libzmq >= 4.2.1" zmq.h zmq_ctx_new
6410 enabled libzvbi           && require_pkg_config libzvbi zvbi-0.2 libzvbi.h vbi_decoder_new &&
6411                              { test_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
6412                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
6413 enabled libxml2           && require_pkg_config libxml2 libxml-2.0 libxml2/libxml/xmlversion.h xmlCheckVersion
6414 enabled mbedtls           && { check_pkg_config mbedtls mbedtls mbedtls/x509_crt.h mbedtls_x509_crt_init ||
6415                                check_pkg_config mbedtls mbedtls mbedtls/ssl.h mbedtls_ssl_init ||
6416                                check_lib mbedtls mbedtls/ssl.h mbedtls_ssl_init -lmbedtls -lmbedx509 -lmbedcrypto ||
6417                                die "ERROR: mbedTLS not found"; }
6418 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
6419 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
6420                                { ! enabled cross_compile &&
6421                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
6422                                  add_ldflags -L/opt/vc/lib/ &&
6423                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
6424                                die "ERROR: mmal not found" &&
6425                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
6426 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
6427                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
6428                                die "ERROR: openal not found"; } &&
6429                              { test_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
6430                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
6431 enabled opencl            && { check_pkg_config opencl OpenCL CL/cl.h clEnqueueNDRangeKernel ||
6432                                check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
6433                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
6434                                die "ERROR: opencl not found"; } &&
6435                              { test_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
6436                                test_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
6437                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
6438 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
6439                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
6440                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
6441                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
6442                                die "ERROR: opengl not found."
6443                              }
6444 enabled omx_rpi           && { test_code cc OMX_Core.h OMX_IndexConfigBrcmVideoRequestIFrame ||
6445                                { ! enabled cross_compile &&
6446                                  add_cflags -isystem/opt/vc/include/IL &&
6447                                  test_code cc OMX_Core.h OMX_IndexConfigBrcmVideoRequestIFrame; } ||
6448                                die "ERROR: OpenMAX IL headers from raspberrypi/firmware not found"; } &&
6449                              enable omx
6450 enabled omx               && require_headers OMX_Core.h
6451 enabled openssl           && { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
6452                                check_pkg_config openssl openssl openssl/ssl.h SSL_library_init ||
6453                                check_lib openssl openssl/ssl.h OPENSSL_init_ssl -lssl -lcrypto ||
6454                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
6455                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
6456                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
6457                                die "ERROR: openssl not found"; }
6458 enabled pocketsphinx      && require_pkg_config pocketsphinx pocketsphinx pocketsphinx/pocketsphinx.h ps_init
6459 enabled rkmpp             && { require_pkg_config rkmpp rockchip_mpp  rockchip/rk_mpi.h mpp_create &&
6460                                require_pkg_config rockchip_mpp "rockchip_mpp >= 1.3.7" rockchip/rk_mpi.h mpp_create &&
6461                                { enabled libdrm ||
6462                                  die "ERROR: rkmpp requires --enable-libdrm"; }
6463                              }
6464 enabled vapoursynth       && require_pkg_config vapoursynth "vapoursynth-script >= 42" VSScript.h vsscript_init
6465
6466
6467 if enabled gcrypt; then
6468     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
6469     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
6470         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
6471         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
6472         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
6473             die "ERROR: gcrypt not found"
6474         add_cflags $gcrypt_cflags
6475     else
6476         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
6477     fi
6478 fi
6479
6480 if enabled sdl2; then
6481     SDL2_CONFIG="${cross_prefix}sdl2-config"
6482     test_pkg_config sdl2 "sdl2 >= 2.0.1 sdl2 < 2.1.0" SDL_events.h SDL_PollEvent
6483     if disabled sdl2 && "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6484         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6485         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6486         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6487         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6488         check_func_headers SDL_events.h SDL_PollEvent $sdl2_extralibs $sdl2_cflags &&
6489             enable sdl2
6490     fi
6491     if test $target_os = "mingw32"; then
6492         sdl2_extralibs=$(filter_out '-mwindows' $sdl2_extralibs)
6493     fi
6494 fi
6495
6496 if enabled decklink; then
6497     case $target_os in
6498         mingw32*|mingw64*|win32|win64)
6499             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6500             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6501             ;;
6502     esac
6503 fi
6504
6505 enabled securetransport &&
6506     check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6507     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" ||
6508         disable securetransport
6509
6510 enabled securetransport &&
6511     check_func SecItemImport "-Wl,-framework,CoreFoundation -Wl,-framework,Security"
6512
6513 enabled schannel &&
6514     check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6515     test_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" &&
6516     schannel_extralibs="-lsecur32" ||
6517         disable schannel
6518
6519 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6520 enabled makeinfo \
6521     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6522     && enable makeinfo_html || disable makeinfo_html
6523 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6524 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6525 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6526 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6527
6528 # check V4L2 codecs available in the API
6529 if enabled v4l2_m2m; then
6530     check_headers linux/fb.h
6531     check_headers linux/videodev2.h
6532     test_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6533     check_cc v4l2_m2m linux/videodev2.h "int i = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_VIDEO_M2M | V4L2_BUF_FLAG_LAST;"
6534     check_cc vc1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VC1_ANNEX_G;"
6535     check_cc mpeg1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG1;"
6536     check_cc mpeg2_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG2;"
6537     check_cc mpeg4_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG4;"
6538     check_cc hevc_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_HEVC;"
6539     check_cc h263_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H263;"
6540     check_cc h264_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H264;"
6541     check_cc vp8_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP8;"
6542     check_cc vp9_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP9;"
6543 fi
6544
6545 check_headers sys/videoio.h
6546 test_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6547
6548 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6549 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6550 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6551 # w32api 3.12 had it defined wrong
6552 check_cpp_condition vfwcap_defines vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER"
6553
6554 check_type "dshow.h" IBaseFilter
6555
6556 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6557 check_headers "dev/bktr/ioctl_meteor.h dev/bktr/ioctl_bt848.h"                   ||
6558     check_headers "machine/ioctl_meteor.h machine/ioctl_bt848.h"                 ||
6559     check_headers "dev/video/meteor/ioctl_meteor.h dev/video/bktr/ioctl_bt848.h" ||
6560     check_headers "dev/ic/bt8xx.h"
6561
6562 if check_struct sys/soundcard.h audio_buf_info bytes; then
6563     enable_sanitized sys/soundcard.h
6564 else
6565     test_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_sanitized sys/soundcard.h
6566     #include <sys/soundcard.h>
6567     audio_buf_info abc;
6568 EOF
6569 fi
6570
6571 enabled alsa && { check_pkg_config alsa alsa "alsa/asoundlib.h" snd_pcm_htimestamp ||
6572                   check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound; }
6573
6574 enabled libjack &&
6575     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
6576
6577 enabled sndio && check_lib sndio sndio.h sio_open -lsndio
6578
6579 if enabled libcdio; then
6580     check_pkg_config libcdio libcdio_paranoia "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open ||
6581     check_pkg_config libcdio libcdio_paranoia "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open ||
6582     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6583     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6584     die "ERROR: No usable libcdio/cdparanoia found"
6585 fi
6586
6587 enabled libxcb && check_pkg_config libxcb "xcb >= 1.4" xcb/xcb.h xcb_connect ||
6588     disable libxcb_shm libxcb_shape libxcb_xfixes
6589
6590 if enabled libxcb; then
6591     enabled libxcb_shm    && check_pkg_config libxcb_shm    xcb-shm    xcb/shm.h    xcb_shm_attach
6592     enabled libxcb_shape  && check_pkg_config libxcb_shape  xcb-shape  xcb/shape.h  xcb_shape_get_rectangles
6593     enabled libxcb_xfixes && check_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
6594 fi
6595
6596 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6597
6598 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6599 # the desktop api partition
6600 test_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
6601 #ifdef WINAPI_FAMILY
6602 #include <winapifamily.h>
6603 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
6604 #error desktop, not uwp
6605 #else
6606 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
6607 #endif
6608 #else
6609 #error no family set
6610 #endif
6611 EOF
6612
6613 enabled vaapi &&
6614     check_pkg_config vaapi "libva >= 0.35.0" "va/va.h" vaInitialize
6615
6616 if enabled vaapi; then
6617     check_pkg_config vaapi_drm "libva-drm" "va/va_drm.h" vaGetDisplayDRM
6618
6619     if enabled xlib; then
6620         check_pkg_config vaapi_x11 "libva-x11" "va/va_x11.h" vaGetDisplay
6621     fi
6622
6623     check_cpp_condition vaapi_1 "va/va.h" "VA_CHECK_VERSION(1, 0, 0)"
6624
6625     check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
6626     check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
6627     check_type   "va/va.h va/va_vpp.h" "VAProcFilterParameterBufferHDRToneMapping"
6628     check_struct "va/va.h va/va_vpp.h" "VAProcPipelineCaps" rotation_flags
6629     check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
6630     check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
6631     check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
6632     check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
6633 fi
6634
6635 if enabled_all opencl libdrm ; then
6636     check_type "CL/cl_intel.h" "clCreateImageFromFdINTEL_fn" &&
6637         enable opencl_drm_beignet
6638     check_func_headers "CL/cl_ext.h" clImportMemoryARM &&
6639         enable opencl_drm_arm
6640 fi
6641
6642 if enabled_all opencl vaapi ; then
6643     if enabled opencl_drm_beignet ; then
6644         enable opencl_vaapi_beignet
6645     else
6646         check_type "CL/cl.h CL/cl_va_api_media_sharing_intel.h" "clCreateFromVA_APIMediaSurfaceINTEL_fn" &&
6647             enable opencl_vaapi_intel_media
6648     fi
6649 fi
6650
6651 if enabled_all opencl dxva2 ; then
6652     check_type "CL/cl_dx9_media_sharing.h" cl_dx9_surface_info_khr &&
6653         enable opencl_dxva2
6654 fi
6655
6656 if enabled_all opencl d3d11va ; then
6657     check_type "CL/cl_d3d11.h" clGetDeviceIDsFromD3D11KHR_fn &&
6658         enable opencl_d3d11
6659 fi
6660
6661 enabled vdpau &&
6662     check_cpp_condition vdpau vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP"
6663
6664 enabled vdpau &&
6665     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6666
6667 enabled crystalhd && check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
6668
6669 enabled vulkan &&
6670     require_pkg_config vulkan "vulkan >= 1.1.97" "vulkan/vulkan.h" vkCreateInstance
6671
6672 if enabled x86; then
6673     case $target_os in
6674         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6675             ;;
6676         *)
6677             disable ffnvcodec cuvid nvdec nvenc
6678             ;;
6679     esac
6680 elif enabled_any aarch64 ppc64 && ! enabled bigendian; then
6681     case $target_os in
6682         linux)
6683             ;;
6684         *)
6685             disable ffnvcodec cuvid nvdec nvenc
6686             ;;
6687     esac
6688 else
6689     disable ffnvcodec cuvid nvdec nvenc
6690 fi
6691
6692 enabled ffnvcodec && enable cuda
6693
6694 enabled nvenc &&
6695     test_cc -I$source_path <<EOF || disable nvenc
6696 #include <ffnvcodec/nvEncodeAPI.h>
6697 NV_ENCODE_API_FUNCTION_LIST flist;
6698 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6699 int main(void) { return 0; }
6700 EOF
6701
6702 enabled amf &&
6703     check_cpp_condition amf "AMF/core/Version.h" \
6704         "(AMF_VERSION_MAJOR << 48 | AMF_VERSION_MINOR << 32 | AMF_VERSION_RELEASE << 16 | AMF_VERSION_BUILD_NUM) >= 0x0001000400090000"
6705
6706 # Funny iconv installations are not unusual, so check it after all flags have been set
6707 if enabled libc_iconv; then
6708     check_func_headers iconv.h iconv
6709 elif enabled iconv; then
6710     check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6711 fi
6712
6713 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6714
6715 # add some useful compiler flags if supported
6716 check_cflags -Wdeclaration-after-statement
6717 check_cflags -Wall
6718 check_cflags -Wdisabled-optimization
6719 check_cflags -Wpointer-arith
6720 check_cflags -Wredundant-decls
6721 check_cflags -Wwrite-strings
6722 check_cflags -Wtype-limits
6723 check_cflags -Wundef
6724 check_cflags -Wmissing-prototypes
6725 check_cflags -Wno-pointer-to-int-cast
6726 check_cflags -Wstrict-prototypes
6727 check_cflags -Wempty-body
6728
6729 if enabled extra_warnings; then
6730     check_cflags -Wcast-qual
6731     check_cflags -Wextra
6732     check_cflags -Wpedantic
6733 fi
6734
6735 check_disable_warning(){
6736     warning_flag=-W${1#-Wno-}
6737     test_cflags $unknown_warning_flags $warning_flag && add_cflags $1
6738 }
6739
6740 test_cflags -Werror=unused-command-line-argument &&
6741     append unknown_warning_flags "-Werror=unused-command-line-argument"
6742 test_cflags -Werror=unknown-warning-option &&
6743     append unknown_warning_flags "-Werror=unknown-warning-option"
6744
6745 check_disable_warning -Wno-parentheses
6746 check_disable_warning -Wno-switch
6747 check_disable_warning -Wno-format-zero-length
6748 check_disable_warning -Wno-pointer-sign
6749 check_disable_warning -Wno-unused-const-variable
6750 check_disable_warning -Wno-bool-operation
6751 check_disable_warning -Wno-char-subscripts
6752
6753 check_disable_warning_headers(){
6754     warning_flag=-W${1#-Wno-}
6755     test_cflags $warning_flag && add_cflags_headers $1
6756 }
6757
6758 check_disable_warning_headers -Wno-deprecated-declarations
6759 check_disable_warning_headers -Wno-unused-variable
6760
6761 test_cc <<EOF && enable blocks_extension
6762 void (^block)(void);
6763 EOF
6764
6765 # add some linker flags
6766 check_ldflags -Wl,--warn-common
6767 check_ldflags -Wl,-rpath-link=:libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6768 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir && add_ldsoflags -Wl,-rpath,$libdir
6769 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6770
6771 # add some strip flags
6772 check_stripflags -x
6773
6774 enabled neon_clobber_test &&
6775     check_ldflags -Wl,--wrap,avcodec_open2              \
6776                   -Wl,--wrap,avcodec_decode_audio4      \
6777                   -Wl,--wrap,avcodec_decode_video2      \
6778                   -Wl,--wrap,avcodec_decode_subtitle2   \
6779                   -Wl,--wrap,avcodec_encode_audio2      \
6780                   -Wl,--wrap,avcodec_encode_video2      \
6781                   -Wl,--wrap,avcodec_encode_subtitle    \
6782                   -Wl,--wrap,avcodec_send_packet        \
6783                   -Wl,--wrap,avcodec_receive_packet     \
6784                   -Wl,--wrap,avcodec_send_frame         \
6785                   -Wl,--wrap,avcodec_receive_frame      \
6786                   -Wl,--wrap,swr_convert                \
6787                   -Wl,--wrap,avresample_convert ||
6788     disable neon_clobber_test
6789
6790 enabled xmm_clobber_test &&
6791     check_ldflags -Wl,--wrap,avcodec_open2              \
6792                   -Wl,--wrap,avcodec_decode_audio4      \
6793                   -Wl,--wrap,avcodec_decode_video2      \
6794                   -Wl,--wrap,avcodec_decode_subtitle2   \
6795                   -Wl,--wrap,avcodec_encode_audio2      \
6796                   -Wl,--wrap,avcodec_encode_video2      \
6797                   -Wl,--wrap,avcodec_encode_subtitle    \
6798                   -Wl,--wrap,avcodec_send_packet        \
6799                   -Wl,--wrap,avcodec_receive_packet     \
6800                   -Wl,--wrap,avcodec_send_frame         \
6801                   -Wl,--wrap,avcodec_receive_frame      \
6802                   -Wl,--wrap,swr_convert                \
6803                   -Wl,--wrap,avresample_convert         \
6804                   -Wl,--wrap,sws_scale ||
6805     disable xmm_clobber_test
6806
6807 check_ld "cc" proper_dce <<EOF
6808 extern const int array[512];
6809 static inline int func(void) { return array[0]; }
6810 int main(void) { return 0; }
6811 EOF
6812
6813 if enabled proper_dce; then
6814     echo "X { local: *; };" > $TMPV
6815     if test_ldflags -Wl,${version_script},$TMPV; then
6816         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6817         quotes='""'
6818         test_cc <<EOF && enable symver_asm_label
6819 void ff_foo(void) __asm__ ("av_foo@VERSION");
6820 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6821 EOF
6822         test_cc <<EOF && enable symver_gnu_asm
6823 __asm__(".symver ff_foo,av_foo@VERSION");
6824 void ff_foo(void) {}
6825 EOF
6826     fi
6827 fi
6828
6829 if [ -z "$optflags" ]; then
6830     if enabled small; then
6831         optflags=$cflags_size
6832     elif enabled optimizations; then
6833         optflags=$cflags_speed
6834     else
6835         optflags=$cflags_noopt
6836     fi
6837 fi
6838
6839 check_optflags(){
6840     check_cflags "$@"
6841     enabled lto && check_ldflags "$@"
6842 }
6843
6844 check_optflags $optflags
6845 check_optflags -fno-math-errno
6846 check_optflags -fno-signed-zeros
6847
6848 if enabled lto; then
6849     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6850     check_cflags  -flto
6851     check_ldflags -flto $cpuflags
6852     disable inline_asm_direct_symbol_refs
6853 fi
6854
6855 enabled ftrapv && check_cflags -ftrapv
6856
6857 test_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6858 int x;
6859 EOF
6860
6861
6862 if enabled icc; then
6863     # Just warnings, no remarks
6864     check_cflags -w1
6865     # -wd: Disable following warnings
6866     # 144, 167, 556: -Wno-pointer-sign
6867     # 188: enumerated type mixed with another type
6868     # 1292: attribute "foo" ignored
6869     # 1419: external declaration in primary source file
6870     # 10006: ignoring unknown option -fno-signed-zeros
6871     # 10148: ignoring unknown option -Wno-parentheses
6872     # 10156: ignoring option '-W'; no argument required
6873     # 13200: No EMMS instruction before call to function
6874     # 13203: No EMMS instruction before return from function
6875     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6876     # 11030: Warning unknown option --as-needed
6877     # 10156: ignoring option '-export'; no argument required
6878     check_ldflags -wd10156,11030
6879     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6880     enable ebp_available
6881     # The test above does not test linking
6882     enabled lto && disable symver_asm_label
6883     if enabled x86_32; then
6884         icc_version=$($cc -dumpversion)
6885         test ${icc_version%%.*} -ge 11 &&
6886             check_cflags -falign-stack=maintain-16-byte ||
6887             disable aligned_stack
6888     fi
6889 elif enabled gcc; then
6890     check_optflags -fno-tree-vectorize
6891     check_cflags -Werror=format-security
6892     check_cflags -Werror=implicit-function-declaration
6893     check_cflags -Werror=missing-prototypes
6894     check_cflags -Werror=return-type
6895     check_cflags -Werror=vla
6896     check_cflags -Wformat
6897     check_cflags -fdiagnostics-color=auto
6898     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6899     if enabled x86_32; then
6900         case $target_os in
6901         *bsd*)
6902             # BSDs don't guarantee a 16 byte aligned stack, but we can
6903             # request GCC to try to maintain 16 byte alignment throughout
6904             # function calls. Library entry points that might call assembly
6905             # functions align the stack. (The parameter means 2^4 bytes.)
6906             check_cflags -mpreferred-stack-boundary=4
6907             ;;
6908         esac
6909     fi
6910 elif enabled llvm_gcc; then
6911     check_cflags -mllvm -stack-alignment=16
6912 elif enabled clang; then
6913     if enabled x86_32; then
6914         # Clang doesn't support maintaining alignment without assuming the
6915         # same alignment in every function. If 16 byte alignment would be
6916         # enabled, one would also have to either add attribute_align_arg on
6917         # every single entry point into the libraries or enable -mstackrealign
6918         # (doing stack realignment in every single function).
6919         case $target_os in
6920         mingw32|win32|*bsd*)
6921             disable aligned_stack
6922             ;;
6923         *)
6924             check_cflags -mllvm -stack-alignment=16
6925             check_cflags -mstack-alignment=16
6926             ;;
6927         esac
6928     else
6929         check_cflags -mllvm -stack-alignment=16
6930         check_cflags -mstack-alignment=16
6931     fi
6932     check_cflags -Qunused-arguments
6933     check_cflags -Werror=implicit-function-declaration
6934     check_cflags -Werror=missing-prototypes
6935     check_cflags -Werror=return-type
6936 elif enabled cparser; then
6937     add_cflags -Wno-missing-variable-declarations
6938     add_cflags -Wno-empty-statement
6939 elif enabled armcc; then
6940     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6941     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6942     # 2523: use of inline assembly is deprecated
6943     add_cflags -W${armcc_opt},--diag_suppress=2523
6944     add_cflags -W${armcc_opt},--diag_suppress=1207
6945     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6946     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6947     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6948     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6949 elif enabled pathscale; then
6950     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6951     disable inline_asm
6952 elif enabled_any msvc icl; then
6953     enabled x86_32 && disable aligned_stack
6954     enabled_all x86_32 debug && add_cflags -Oy-
6955     enabled debug && add_ldflags -debug
6956     enable pragma_deprecated
6957     if enabled icl; then
6958         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6959         # (correctly) on icl 13.x.
6960         test_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6961             add_cflags -Qansi-alias
6962         # Some inline asm is not compilable in debug
6963         if enabled debug; then
6964             disable ebp_available
6965             disable ebx_available
6966         fi
6967     fi
6968     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6969     check_cpp_condition log2 crtversion.h "_VC_CRT_MAJOR_VERSION >= 12"
6970     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6971     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6972     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6973     # MSVC 2013 and newer can handle it fine.
6974     # If this declspec fails, force including stdlib.h before the restrict redefinition
6975     # happens in config.h.
6976     if [ $restrict_keyword != restrict ]; then
6977         test_cc <<EOF || add_cflags -FIstdlib.h
6978 __declspec($restrict_keyword) void *foo(int);
6979 EOF
6980     fi
6981     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6982     # Issue has been fixed in MSVC v19.00.24218.
6983     test_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6984         check_cflags -d2SSAOptimizer-
6985     # enable utf-8 source processing on VS2015 U2 and newer
6986     test_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6987         add_cflags -utf-8
6988 fi
6989
6990 for pfx in "" host_; do
6991     varname=${pfx%_}cc_type
6992     eval "type=\$$varname"
6993     if [ "$type" = "msvc" ]; then
6994         test_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6995 static inline int foo(int a) { return a; }
6996 EOF
6997     fi
6998 done
6999
7000 case $as_type in
7001     clang)
7002         add_asflags -Qunused-arguments
7003     ;;
7004 esac
7005
7006 case $ld_type in
7007     clang)
7008         check_ldflags -Qunused-arguments
7009     ;;
7010 esac
7011
7012 enable frame_thread_encoder
7013
7014 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
7015
7016 check_deps $CONFIG_LIST       \
7017            $CONFIG_EXTRA      \
7018            $HAVE_LIST         \
7019            $ALL_COMPONENTS    \
7020
7021 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"
7022 enabled avresample && warn "Building with deprecated library libavresample"
7023
7024 case $target_os in
7025 haiku)
7026     disable memalign
7027     disable posix_memalign
7028     ;;
7029 *-dos|freedos|opendos)
7030     if test_cpp_condition sys/version.h "defined(__DJGPP__) && __DJGPP__ == 2 && __DJGPP_MINOR__ == 5"; then
7031         disable memalign
7032     fi
7033     ;;
7034 esac
7035
7036 flatten_extralibs(){
7037     nested_entries=
7038     list_name=$1
7039     eval list=\$${1}
7040     for entry in $list; do
7041         entry_copy=$entry
7042         resolve entry_copy
7043         flat_entries=
7044         for e in $entry_copy; do
7045             case $e in
7046                 *_extralibs) nested_entries="$nested_entries$e ";;
7047                           *) flat_entries="$flat_entries$e ";;
7048             esac
7049         done
7050         eval $entry="\$flat_entries"
7051     done
7052     append $list_name "$nested_entries"
7053
7054     resolve nested_entries
7055     if test -n "$(filter '*_extralibs' $nested_entries)"; then
7056         flatten_extralibs $list_name
7057     fi
7058 }
7059
7060 flatten_extralibs_wrapper(){
7061     list_name=$1
7062     flatten_extralibs $list_name
7063     unique $list_name
7064     resolve $list_name
7065     eval $list_name=\$\(\$ldflags_filter \$$list_name\)
7066     eval printf \''%s'\' \""\$$list_name"\"
7067 }
7068
7069 for linkunit in $LIBRARY_LIST; do
7070     unset current_extralibs
7071     eval components=\$$(toupper ${linkunit})_COMPONENTS_LIST
7072     for comp in ${components}; do
7073         enabled $comp || continue
7074         comp_extralibs="${comp}_extralibs"
7075         append current_extralibs $comp_extralibs
7076     done
7077     eval prepend ${linkunit}_extralibs $current_extralibs
7078 done
7079
7080 for linkunit in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
7081     eval ${linkunit}_extralibs=\$\(flatten_extralibs_wrapper ${linkunit}_extralibs\)
7082 done
7083
7084 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
7085
7086 for thread in $THREADS_LIST; do
7087     if enabled $thread; then
7088         test -n "$thread_type" &&
7089             die "ERROR: Only one thread type must be selected." ||
7090             thread_type="$thread"
7091     fi
7092 done
7093
7094 if disabled stdatomic; then
7095     if enabled atomics_gcc; then
7096         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
7097     elif enabled atomics_win32; then
7098         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
7099     elif enabled atomics_suncc; then
7100         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
7101     elif enabled pthreads; then
7102         add_compat atomics/pthread/stdatomic.o
7103         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
7104     else
7105         enabled threads && die "Threading is enabled, but no atomics are available"
7106         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
7107     fi
7108 fi
7109
7110 # Check if requested libraries were found.
7111 for lib in $AUTODETECT_LIBS; do
7112     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
7113 done
7114
7115 enabled zlib && add_cppflags -DZLIB_CONST
7116
7117 # conditional library dependencies, in any order
7118 enabled afftdn_filter       && prepend avfilter_deps "avcodec"
7119 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
7120 enabled afir_filter         && prepend avfilter_deps "avcodec"
7121 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
7122 enabled aresample_filter    && prepend avfilter_deps "swresample"
7123 enabled atempo_filter       && prepend avfilter_deps "avcodec"
7124 enabled bm3d_filter         && prepend avfilter_deps "avcodec"
7125 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
7126 enabled convolve_filter     && prepend avfilter_deps "avcodec"
7127 enabled deconvolve_filter   && prepend avfilter_deps "avcodec"
7128 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
7129 enabled elbg_filter         && prepend avfilter_deps "avcodec"
7130 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
7131 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
7132 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
7133 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
7134 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
7135 enabled pan_filter          && prepend avfilter_deps "swresample"
7136 enabled pp_filter           && prepend avfilter_deps "postproc"
7137 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
7138 enabled resample_filter && prepend avfilter_deps "avresample"
7139 enabled sab_filter          && prepend avfilter_deps "swscale"
7140 enabled scale_filter    && prepend avfilter_deps "swscale"
7141 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
7142 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
7143 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
7144 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
7145 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
7146 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
7147 enabled smartblur_filter    && prepend avfilter_deps "swscale"
7148 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
7149 enabled spp_filter          && prepend avfilter_deps "avcodec"
7150 enabled sr_filter           && prepend avfilter_deps "avformat swscale"
7151 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
7152 enabled uspp_filter         && prepend avfilter_deps "avcodec"
7153 enabled zoompan_filter      && prepend avfilter_deps "swscale"
7154
7155 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
7156
7157 #FIXME
7158 enabled_any sdl2_outdev opengl_outdev && enabled sdl2 &&
7159     add_cflags $(filter_out '-Dmain=SDL_main' $sdl2_cflags)
7160
7161 enabled opus_decoder    && prepend avcodec_deps "swresample"
7162
7163 # reorder the items at var $1 to align with the items order at var $2 .
7164 # die if an item at $1 is not at $2 .
7165 reorder_by(){
7166     eval rb_in=\$$1
7167     eval rb_ordered=\$$2
7168
7169     for rb in $rb_in; do
7170         is_in $rb $rb_ordered || die "$rb at \$$1 is not at \$$2"
7171     done
7172
7173     rb_out=
7174     for rb in $rb_ordered; do
7175         is_in $rb $rb_in && rb_out="$rb_out$rb "
7176     done
7177     eval $1=\$rb_out
7178 }
7179
7180 # deps-expand fflib $1:  N x {append all expanded deps; unique}
7181 # within a set of N items, N expansions are enough to expose a cycle.
7182 expand_deps(){
7183     unique ${1}_deps  # required for the early break test.
7184     for dummy in $LIBRARY_LIST; do  # N iteratios
7185         eval deps=\$${1}_deps
7186         append ${1}_deps $(map 'eval echo \$${v}_deps' $deps)
7187         unique ${1}_deps
7188         eval '[ ${#deps} = ${#'${1}_deps'} ]' && break  # doesn't expand anymore
7189     done
7190
7191     eval is_in $1 \$${1}_deps && die "Dependency cycle at ${1}_deps"
7192     reorder_by ${1}_deps LIBRARY_LIST  # linking order is expected later
7193 }
7194
7195 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
7196 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
7197
7198 map 'expand_deps $v' $LIBRARY_LIST
7199
7200 if test "$quiet" != "yes"; then
7201
7202 echo "install prefix            $prefix"
7203 echo "source path               $source_path"
7204 echo "C compiler                $cc"
7205 echo "C library                 $libc_type"
7206 if test "$host_cc" != "$cc"; then
7207     echo "host C compiler           $host_cc"
7208     echo "host C library            $host_libc_type"
7209 fi
7210 echo "ARCH                      $arch ($cpu)"
7211 if test "$build_suffix" != ""; then
7212     echo "build suffix              $build_suffix"
7213 fi
7214 if test "$progs_suffix" != ""; then
7215     echo "progs suffix              $progs_suffix"
7216 fi
7217 if test "$extra_version" != ""; then
7218     echo "version string suffix     $extra_version"
7219 fi
7220 echo "big-endian                ${bigendian-no}"
7221 echo "runtime cpu detection     ${runtime_cpudetect-no}"
7222 if enabled x86; then
7223     echo "standalone assembly       ${x86asm-no}"
7224     echo "x86 assembler             ${x86asmexe}"
7225     echo "MMX enabled               ${mmx-no}"
7226     echo "MMXEXT enabled            ${mmxext-no}"
7227     echo "3DNow! enabled            ${amd3dnow-no}"
7228     echo "3DNow! extended enabled   ${amd3dnowext-no}"
7229     echo "SSE enabled               ${sse-no}"
7230     echo "SSSE3 enabled             ${ssse3-no}"
7231     echo "AESNI enabled             ${aesni-no}"
7232     echo "AVX enabled               ${avx-no}"
7233     echo "AVX2 enabled              ${avx2-no}"
7234     echo "AVX-512 enabled           ${avx512-no}"
7235     echo "XOP enabled               ${xop-no}"
7236     echo "FMA3 enabled              ${fma3-no}"
7237     echo "FMA4 enabled              ${fma4-no}"
7238     echo "i686 features enabled     ${i686-no}"
7239     echo "CMOV is fast              ${fast_cmov-no}"
7240     echo "EBX available             ${ebx_available-no}"
7241     echo "EBP available             ${ebp_available-no}"
7242 fi
7243 if enabled aarch64; then
7244     echo "NEON enabled              ${neon-no}"
7245     echo "VFP enabled               ${vfp-no}"
7246 fi
7247 if enabled arm; then
7248     echo "ARMv5TE enabled           ${armv5te-no}"
7249     echo "ARMv6 enabled             ${armv6-no}"
7250     echo "ARMv6T2 enabled           ${armv6t2-no}"
7251     echo "VFP enabled               ${vfp-no}"
7252     echo "NEON enabled              ${neon-no}"
7253     echo "THUMB enabled             ${thumb-no}"
7254 fi
7255 if enabled mips; then
7256     echo "MIPS FPU enabled          ${mipsfpu-no}"
7257     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
7258     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
7259     echo "MIPS MSA enabled          ${msa-no}"
7260     echo "MIPS MSA2 enabled         ${msa2-no}"
7261     echo "LOONGSON MMI enabled      ${mmi-no}"
7262 fi
7263 if enabled ppc; then
7264     echo "AltiVec enabled           ${altivec-no}"
7265     echo "VSX enabled               ${vsx-no}"
7266     echo "POWER8 enabled            ${power8-no}"
7267     echo "PPC 4xx optimizations     ${ppc4xx-no}"
7268     echo "dcbzl available           ${dcbzl-no}"
7269 fi
7270 echo "debug symbols             ${debug-no}"
7271 echo "strip symbols             ${stripping-no}"
7272 echo "optimize for size         ${small-no}"
7273 echo "optimizations             ${optimizations-no}"
7274 echo "static                    ${static-no}"
7275 echo "shared                    ${shared-no}"
7276 echo "postprocessing support    ${postproc-no}"
7277 echo "network support           ${network-no}"
7278 echo "threading support         ${thread_type-no}"
7279 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
7280 echo "texi2html enabled         ${texi2html-no}"
7281 echo "perl enabled              ${perl-no}"
7282 echo "pod2man enabled           ${pod2man-no}"
7283 echo "makeinfo enabled          ${makeinfo-no}"
7284 echo "makeinfo supports HTML    ${makeinfo_html-no}"
7285 test -n "$random_seed" &&
7286     echo "random seed               ${random_seed}"
7287 echo
7288
7289 echo "External libraries:"
7290 print_enabled '' $EXTERNAL_LIBRARY_LIST $EXTERNAL_AUTODETECT_LIBRARY_LIST | print_in_columns
7291 echo
7292
7293 echo "External libraries providing hardware acceleration:"
7294 print_enabled '' $HWACCEL_LIBRARY_LIST $HWACCEL_AUTODETECT_LIBRARY_LIST | print_in_columns
7295 echo
7296
7297 echo "Libraries:"
7298 print_enabled '' $LIBRARY_LIST | print_in_columns
7299 echo
7300
7301 echo "Programs:"
7302 print_enabled '' $PROGRAM_LIST | print_in_columns
7303 echo
7304
7305 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
7306     echo "Enabled ${type}s:"
7307     eval list=\$$(toupper $type)_LIST
7308     print_enabled '_*' $list | print_in_columns
7309     echo
7310 done
7311
7312 if test -n "$ignore_tests"; then
7313     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
7314     echo "Ignored FATE tests:"
7315     echo $ignore_tests | print_in_columns
7316     echo
7317 fi
7318
7319 echo "License: $license"
7320
7321 fi # test "$quiet" != "yes"
7322
7323 if test -n "$WARN_IF_GETS_DISABLED_LIST"; then
7324     for cfg in $WARN_IF_GETS_DISABLED_LIST; do
7325         if disabled $cfg; then
7326             varname=${cfg}_disable_reason
7327             eval "warn \"Disabled $cfg because \$$varname\""
7328         fi
7329     done
7330 fi
7331
7332 if test -n "$WARNINGS"; then
7333     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
7334     enabled fatal_warnings && exit 1
7335 fi
7336
7337 test -e Makefile || echo "include $source_path/Makefile" > Makefile
7338
7339 esc(){
7340     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
7341 }
7342
7343 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
7344
7345 enabled stripping || strip="echo skipping strip"
7346 enabled stripping || striptype=""
7347
7348 config_files="$TMPH ffbuild/config.mak doc/config.texi"
7349
7350 cat > ffbuild/config.mak <<EOF
7351 # Automatically generated by configure - do not modify!
7352 ifndef FFMPEG_CONFIG_MAK
7353 FFMPEG_CONFIG_MAK=1
7354 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
7355 prefix=$prefix
7356 LIBDIR=\$(DESTDIR)$libdir
7357 SHLIBDIR=\$(DESTDIR)$shlibdir
7358 INCDIR=\$(DESTDIR)$incdir
7359 BINDIR=\$(DESTDIR)$bindir
7360 DATADIR=\$(DESTDIR)$datadir
7361 DOCDIR=\$(DESTDIR)$docdir
7362 MANDIR=\$(DESTDIR)$mandir
7363 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
7364 INSTALL_NAME_DIR=$install_name_dir
7365 SRC_PATH=$source_path
7366 SRC_LINK=$source_link
7367 ifndef MAIN_MAKEFILE
7368 SRC_PATH:=\$(SRC_PATH:.%=..%)
7369 endif
7370 CC_IDENT=$cc_ident
7371 ARCH=$arch
7372 INTRINSICS=$intrinsics
7373 EXTERN_PREFIX=$extern_prefix
7374 CC=$cc
7375 CXX=$cxx
7376 AS=$as
7377 OBJCC=$objcc
7378 LD=$ld
7379 DEPCC=$dep_cc
7380 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
7381 DEPAS=$as
7382 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
7383 X86ASM=$x86asmexe
7384 DEPX86ASM=$x86asmexe
7385 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
7386 AR=$ar
7387 ARFLAGS=$arflags
7388 AR_O=$ar_o
7389 AR_CMD=$ar
7390 NM_CMD=$nm
7391 RANLIB=$ranlib
7392 STRIP=$strip
7393 STRIPTYPE=$striptype
7394 NVCC=$nvcc
7395 CP=cp -p
7396 LN_S=$ln_s
7397 CPPFLAGS=$CPPFLAGS
7398 CFLAGS=$CFLAGS
7399 CXXFLAGS=$CXXFLAGS
7400 OBJCFLAGS=$OBJCFLAGS
7401 ASFLAGS=$ASFLAGS
7402 NVCCFLAGS=$nvccflags
7403 AS_C=$AS_C
7404 AS_O=$AS_O
7405 OBJCC_C=$OBJCC_C
7406 OBJCC_E=$OBJCC_E
7407 OBJCC_O=$OBJCC_O
7408 CC_C=$CC_C
7409 CC_E=$CC_E
7410 CC_O=$CC_O
7411 CXX_C=$CXX_C
7412 CXX_O=$CXX_O
7413 NVCC_C=$NVCC_C
7414 NVCC_O=$NVCC_O
7415 LD_O=$LD_O
7416 X86ASM_O=$X86ASM_O
7417 LD_LIB=$LD_LIB
7418 LD_PATH=$LD_PATH
7419 DLLTOOL=$dlltool
7420 WINDRES=$windres
7421 DEPWINDRES=$dep_cc
7422 DOXYGEN=$doxygen
7423 LDFLAGS=$LDFLAGS
7424 LDEXEFLAGS=$LDEXEFLAGS
7425 LDSOFLAGS=$LDSOFLAGS
7426 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
7427 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
7428 X86ASMFLAGS=$X86ASMFLAGS
7429 BUILDSUF=$build_suffix
7430 PROGSSUF=$progs_suffix
7431 FULLNAME=$FULLNAME
7432 LIBPREF=$LIBPREF
7433 LIBSUF=$LIBSUF
7434 LIBNAME=$LIBNAME
7435 SLIBPREF=$SLIBPREF
7436 SLIBSUF=$SLIBSUF
7437 EXESUF=$EXESUF
7438 EXTRA_VERSION=$extra_version
7439 CCDEP=$CCDEP
7440 CXXDEP=$CXXDEP
7441 CCDEP_FLAGS=$CCDEP_FLAGS
7442 ASDEP=$ASDEP
7443 ASDEP_FLAGS=$ASDEP_FLAGS
7444 X86ASMDEP=$X86ASMDEP
7445 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
7446 CC_DEPFLAGS=$CC_DEPFLAGS
7447 AS_DEPFLAGS=$AS_DEPFLAGS
7448 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
7449 HOSTCC=$host_cc
7450 HOSTLD=$host_ld
7451 HOSTCFLAGS=$host_cflags
7452 HOSTCPPFLAGS=$host_cppflags
7453 HOSTEXESUF=$HOSTEXESUF
7454 HOSTLDFLAGS=$host_ldflags
7455 HOSTEXTRALIBS=$host_extralibs
7456 DEPHOSTCC=$host_cc
7457 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
7458 HOSTCCDEP=$HOSTCCDEP
7459 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
7460 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
7461 HOSTCC_C=$HOSTCC_C
7462 HOSTCC_O=$HOSTCC_O
7463 HOSTLD_O=$HOSTLD_O
7464 TARGET_EXEC=$target_exec $target_exec_args
7465 TARGET_PATH=$target_path
7466 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
7467 CFLAGS-ffplay=${sdl2_cflags}
7468 CFLAGS_HEADERS=$CFLAGS_HEADERS
7469 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
7470 EXTRALIBS=$extralibs
7471 COMPAT_OBJS=$compat_objs
7472 INSTALL=$install
7473 LIBTARGET=${LIBTARGET}
7474 SLIBNAME=${SLIBNAME}
7475 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
7476 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
7477 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
7478 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
7479 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
7480 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
7481 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
7482 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
7483 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
7484 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
7485 NOREDZONE_FLAGS=$noredzone_flags
7486 LIBFUZZER_PATH=$libfuzzer_path
7487 IGNORE_TESTS=$ignore_tests
7488 EOF
7489
7490 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
7491
7492 for entry in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
7493     eval echo "EXTRALIBS-${entry}=\$${entry}_extralibs" >> ffbuild/config.mak
7494 done
7495
7496 cat > $TMPH <<EOF
7497 /* Automatically generated by configure - do not modify! */
7498 #ifndef FFMPEG_CONFIG_H
7499 #define FFMPEG_CONFIG_H
7500 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
7501 #define FFMPEG_LICENSE "$(c_escape $license)"
7502 #define CONFIG_THIS_YEAR 2020
7503 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
7504 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
7505 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
7506 #define av_restrict $restrict_keyword
7507 #define EXTERN_PREFIX "${extern_prefix}"
7508 #define EXTERN_ASM ${extern_prefix}
7509 #define BUILDSUF "$build_suffix"
7510 #define SLIBSUF "$SLIBSUF"
7511 #define HAVE_MMX2 HAVE_MMXEXT
7512 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
7513 EOF
7514
7515 test -n "$assert_level" &&
7516     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
7517
7518 test -n "$malloc_prefix" &&
7519     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
7520
7521 if enabled x86asm; then
7522     append config_files $TMPASM
7523     cat > $TMPASM <<EOF
7524 ; Automatically generated by configure - do not modify!
7525 EOF
7526 fi
7527
7528 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
7529
7530
7531 mkdir -p doc
7532 mkdir -p tests
7533 mkdir -p tests/api
7534 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
7535
7536 print_config ARCH_   "$config_files" $ARCH_LIST
7537 print_config HAVE_   "$config_files" $HAVE_LIST
7538 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
7539                                      $CONFIG_EXTRA      \
7540                                      $ALL_COMPONENTS    \
7541
7542 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
7543 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
7544
7545 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
7546 cp_if_changed $TMPH config.h
7547 touch ffbuild/.config
7548
7549 enabled x86asm && cp_if_changed $TMPASM config.asm
7550
7551 cat > $TMPH <<EOF
7552 /* Generated by ffmpeg configure */
7553 #ifndef AVUTIL_AVCONFIG_H
7554 #define AVUTIL_AVCONFIG_H
7555 EOF
7556
7557 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
7558
7559 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
7560
7561 cp_if_changed $TMPH libavutil/avconfig.h
7562
7563 # full_filter_name_foo=vf_foo
7564 # full_filter_name_bar=asrc_bar
7565 # ...
7566 eval "$(sed -n "s/^extern AVFilter ff_\([avfsinkrc]\{2,5\}\)_\(.*\);/full_filter_name_\2=\1_\2/p" $source_path/libavfilter/allfilters.c)"
7567
7568 # generate the lists of enabled components
7569 print_enabled_components(){
7570     file=$1
7571     struct_name=$2
7572     name=$3
7573     shift 3
7574     echo "static const $struct_name * const $name[] = {" > $TMPH
7575     for c in $*; do
7576         if enabled $c; then
7577             case $name in
7578                 filter_list)
7579                     eval c=\$full_filter_name_${c%_filter}
7580                 ;;
7581                 indev_list)
7582                     c=${c%_indev}_demuxer
7583                 ;;
7584                 outdev_list)
7585                     c=${c%_outdev}_muxer
7586                 ;;
7587             esac
7588             printf "    &ff_%s,\n" $c >> $TMPH
7589         fi
7590     done
7591     if [ "$name" = "filter_list" ]; then
7592         for c in asrc_abuffer vsrc_buffer asink_abuffer vsink_buffer; do
7593             printf "    &ff_%s,\n" $c >> $TMPH
7594         done
7595     fi
7596     echo "    NULL };" >> $TMPH
7597     cp_if_changed $TMPH $file
7598 }
7599
7600 print_enabled_components libavfilter/filter_list.c AVFilter filter_list $FILTER_LIST
7601 print_enabled_components libavcodec/codec_list.c AVCodec codec_list $CODEC_LIST
7602 print_enabled_components libavcodec/parser_list.c AVCodecParser parser_list $PARSER_LIST
7603 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
7604 print_enabled_components libavformat/demuxer_list.c AVInputFormat demuxer_list $DEMUXER_LIST
7605 print_enabled_components libavformat/muxer_list.c AVOutputFormat muxer_list $MUXER_LIST
7606 print_enabled_components libavdevice/indev_list.c AVInputFormat indev_list $INDEV_LIST
7607 print_enabled_components libavdevice/outdev_list.c AVOutputFormat outdev_list $OUTDEV_LIST
7608 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
7609
7610 # Settings for pkg-config files
7611
7612 cat > $TMPH <<EOF
7613 # Automatically generated by configure - do not modify!
7614 shared=$shared
7615 build_suffix=$build_suffix
7616 prefix=$prefix
7617 libdir=$libdir
7618 incdir=$incdir
7619 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
7620 source_path=${source_path}
7621 LIBPREF=${LIBPREF}
7622 LIBSUF=${LIBSUF}
7623 extralibs_avutil="$avutil_extralibs"
7624 extralibs_avcodec="$avcodec_extralibs"
7625 extralibs_avformat="$avformat_extralibs"
7626 extralibs_avdevice="$avdevice_extralibs"
7627 extralibs_avfilter="$avfilter_extralibs"
7628 extralibs_avresample="$avresample_extralibs"
7629 extralibs_postproc="$postproc_extralibs"
7630 extralibs_swscale="$swscale_extralibs"
7631 extralibs_swresample="$swresample_extralibs"
7632 EOF
7633
7634 for lib in $LIBRARY_LIST; do
7635     lib_deps="$(eval echo \$${lib}_deps)"
7636     echo ${lib}_deps=\"$lib_deps\" >> $TMPH
7637 done
7638
7639 cp_if_changed $TMPH ffbuild/config.sh