git.sesse.net Git - ffmpeg/blob - configure

   1 #!/bin/sh
   2 #
   3 # FFmpeg configure script
   4 #
   5 # Copyright (c) 2000-2002 Fabrice Bellard
   6 # Copyright (c) 2005-2008 Diego Biurrun
   7 # Copyright (c) 2005-2008 Mans Rullgard
   8 #
   9
  10 # Prevent locale nonsense from breaking basic text processing.
  11 LC_ALL=C
  12 export LC_ALL
  13
  14 # make sure we are running under a compatible shell
  15 # try to make this part work with most shells
  16
  17 try_exec(){
  18     echo "Trying shell $1"
  19     type "$1" > /dev/null 2>&1 && exec "$@"
  20 }
  21
  22 unset foo
  23 (: ${foo%%bar}) 2> /dev/null
  24 E1="$?"
  25
  26 (: ${foo?}) 2> /dev/null
  27 E2="$?"
  28
  29 if test "$E1" != 0 || test "$E2" = 0; then
  30     echo "Broken shell detected.  Trying alternatives."
  31     export FF_CONF_EXEC
  32     if test "0$FF_CONF_EXEC" -lt 1; then
  33         FF_CONF_EXEC=1
  34         try_exec bash "$0" "$@"
  35     fi
  36     if test "0$FF_CONF_EXEC" -lt 2; then
  37         FF_CONF_EXEC=2
  38         try_exec ksh "$0" "$@"
  39     fi
  40     if test "0$FF_CONF_EXEC" -lt 3; then
  41         FF_CONF_EXEC=3
  42         try_exec /usr/xpg4/bin/sh "$0" "$@"
  43     fi
  44     echo "No compatible shell script interpreter found."
  45     echo "This configure script requires a POSIX-compatible shell"
  46     echo "such as bash or ksh."
  47     echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
  48     echo "Instead, install a working POSIX-compatible shell."
  49     echo "Disabling this configure test will create a broken FFmpeg."
  50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
  51         echo "This bash version ($BASH_VERSION) is broken on your platform."
  52         echo "Upgrade to a later version if available."
  53     fi
  54     exit 1
  55 fi
  56
  57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
  58
  59 show_help(){
  60     cat <<EOF
  61 Usage: configure [options]
  62 Options: [defaults in brackets after descriptions]
  63
  64 Help options:
  65   --help                   print this message
  66   --quiet                  Suppress showing informative output
  67   --list-decoders          show all available decoders
  68   --list-encoders          show all available encoders
  69   --list-hwaccels          show all available hardware accelerators
  70   --list-demuxers          show all available demuxers
  71   --list-muxers            show all available muxers
  72   --list-parsers           show all available parsers
  73   --list-protocols         show all available protocols
  74   --list-bsfs              show all available bitstream filters
  75   --list-indevs            show all available input devices
  76   --list-outdevs           show all available output devices
  77   --list-filters           show all available filters
  78
  79 Standard options:
  80   --logfile=FILE           log tests and output to FILE [ffbuild/config.log]
  81   --disable-logging        do not log configure debug information
  82   --fatal-warnings         fail if any configure warning is generated
  83   --prefix=PREFIX          install in PREFIX [$prefix_default]
  84   --bindir=DIR             install binaries in DIR [PREFIX/bin]
  85   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
  86   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
  87   --libdir=DIR             install libs in DIR [PREFIX/lib]
  88   --shlibdir=DIR           install shared libs in DIR [LIBDIR]
  89   --incdir=DIR             install includes in DIR [PREFIX/include]
  90   --mandir=DIR             install man page in DIR [PREFIX/share/man]
  91   --pkgconfigdir=DIR       install pkg-config files in DIR [LIBDIR/pkgconfig]
  92   --enable-rpath           use rpath to allow installing libraries in paths
  93                            not part of the dynamic linker search path
  94                            use rpath when linking programs (USE WITH CARE)
  95   --install-name-dir=DIR   Darwin directory name for installed targets
  96
  97 Licensing options:
  98   --enable-gpl             allow use of GPL code, the resulting libs
  99                            and binaries will be under GPL [no]
 100   --enable-version3        upgrade (L)GPL to version 3 [no]
 101   --enable-nonfree         allow use of nonfree code, the resulting libs
 102                            and binaries will be unredistributable [no]
 103
 104 Configuration options:
 105   --disable-static         do not build static libraries [no]
 106   --enable-shared          build shared libraries [no]
 107   --enable-small           optimize for size instead of speed
 108   --disable-runtime-cpudetect disable detecting CPU capabilities at runtime (smaller binary)
 109   --enable-gray            enable full grayscale support (slower color)
 110   --disable-swscale-alpha  disable alpha channel support in swscale
 111   --disable-all            disable building components, libraries and programs
 112   --disable-autodetect     disable automatically detected external libraries [no]
 113
 114 Program options:
 115   --disable-programs       do not build command line programs
 116   --disable-ffmpeg         disable ffmpeg build
 117   --disable-ffplay         disable ffplay build
 118   --disable-ffprobe        disable ffprobe build
 119
 120 Documentation options:
 121   --disable-doc            do not build documentation
 122   --disable-htmlpages      do not build HTML documentation pages
 123   --disable-manpages       do not build man documentation pages
 124   --disable-podpages       do not build POD documentation pages
 125   --disable-txtpages       do not build text documentation pages
 126
 127 Component options:
 128   --disable-avdevice       disable libavdevice build
 129   --disable-avcodec        disable libavcodec build
 130   --disable-avformat       disable libavformat build
 131   --disable-swresample     disable libswresample build
 132   --disable-swscale        disable libswscale build
 133   --disable-postproc       disable libpostproc build
 134   --disable-avfilter       disable libavfilter build
 135   --enable-avresample      enable libavresample build (deprecated) [no]
 136   --disable-pthreads       disable pthreads [autodetect]
 137   --disable-w32threads     disable Win32 threads [autodetect]
 138   --disable-os2threads     disable OS/2 threads [autodetect]
 139   --disable-network        disable network support [no]
 140   --disable-dct            disable DCT code
 141   --disable-dwt            disable DWT code
 142   --disable-error-resilience disable error resilience code
 143   --disable-lsp            disable LSP code
 144   --disable-lzo            disable LZO decoder code
 145   --disable-mdct           disable MDCT code
 146   --disable-rdft           disable RDFT code
 147   --disable-fft            disable FFT code
 148   --disable-faan           disable floating point AAN (I)DCT code
 149   --disable-pixelutils     disable pixel utils in libavutil
 150
 151 Individual component options:
 152   --disable-everything     disable all components listed below
 153   --disable-encoder=NAME   disable encoder NAME
 154   --enable-encoder=NAME    enable encoder NAME
 155   --disable-encoders       disable all encoders
 156   --disable-decoder=NAME   disable decoder NAME
 157   --enable-decoder=NAME    enable decoder NAME
 158   --disable-decoders       disable all decoders
 159   --disable-hwaccel=NAME   disable hwaccel NAME
 160   --enable-hwaccel=NAME    enable hwaccel NAME
 161   --disable-hwaccels       disable all hwaccels
 162   --disable-muxer=NAME     disable muxer NAME
 163   --enable-muxer=NAME      enable muxer NAME
 164   --disable-muxers         disable all muxers
 165   --disable-demuxer=NAME   disable demuxer NAME
 166   --enable-demuxer=NAME    enable demuxer NAME
 167   --disable-demuxers       disable all demuxers
 168   --enable-parser=NAME     enable parser NAME
 169   --disable-parser=NAME    disable parser NAME
 170   --disable-parsers        disable all parsers
 171   --enable-bsf=NAME        enable bitstream filter NAME
 172   --disable-bsf=NAME       disable bitstream filter NAME
 173   --disable-bsfs           disable all bitstream filters
 174   --enable-protocol=NAME   enable protocol NAME
 175   --disable-protocol=NAME  disable protocol NAME
 176   --disable-protocols      disable all protocols
 177   --enable-indev=NAME      enable input device NAME
 178   --disable-indev=NAME     disable input device NAME
 179   --disable-indevs         disable input devices
 180   --enable-outdev=NAME     enable output device NAME
 181   --disable-outdev=NAME    disable output device NAME
 182   --disable-outdevs        disable output devices
 183   --disable-devices        disable all devices
 184   --enable-filter=NAME     enable filter NAME
 185   --disable-filter=NAME    disable filter NAME
 186   --disable-filters        disable all filters
 187
 188 External library support:
 189
 190   Using any of the following switches will allow FFmpeg to link to the
 191   corresponding external library. All the components depending on that library
 192   will become enabled, if all their other dependencies are met and they are not
 193   explicitly disabled. E.g. --enable-libwavpack will enable linking to
 194   libwavpack and allow the libwavpack encoder to be built, unless it is
 195   specifically disabled with --disable-encoder=libwavpack.
 196
 197   Note that only the system libraries are auto-detected. All the other external
 198   libraries must be explicitly enabled.
 199
 200   Also note that the following help text describes the purpose of the libraries
 201   themselves, not all their features will necessarily be usable by FFmpeg.
 202
 203   --disable-alsa           disable ALSA support [autodetect]
 204   --disable-appkit         disable Apple AppKit framework [autodetect]
 205   --disable-avfoundation   disable Apple AVFoundation framework [autodetect]
 206   --enable-avisynth        enable reading of AviSynth script files [no]
 207   --disable-bzlib          disable bzlib [autodetect]
 208   --disable-coreimage      disable Apple CoreImage framework [autodetect]
 209   --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
 210   --enable-frei0r          enable frei0r video filtering [no]
 211   --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
 212                            if openssl, librtmp or gmp is not used [no]
 213   --enable-gmp             enable gmp, needed for rtmp(t)e support
 214                            if openssl or librtmp is not used [no]
 215   --enable-gnutls          enable gnutls, needed for https support
 216                            if openssl, libtls or mbedtls is not used [no]
 217   --disable-iconv          disable iconv [autodetect]
 218   --enable-jni             enable JNI support [no]
 219   --enable-ladspa          enable LADSPA audio filtering [no]
 220   --enable-libaom          enable AV1 video encoding/decoding via libaom [no]
 221   --enable-libaribb24      enable ARIB text and caption decoding via libaribb24 [no]
 222   --enable-libass          enable libass subtitles rendering,
 223                            needed for subtitles and ass filter [no]
 224   --enable-libbluray       enable BluRay reading using libbluray [no]
 225   --enable-libbs2b         enable bs2b DSP library [no]
 226   --enable-libcaca         enable textual display using libcaca [no]
 227   --enable-libcelt         enable CELT decoding via libcelt [no]
 228   --enable-libcdio         enable audio CD grabbing with libcdio [no]
 229   --enable-libcodec2       enable codec2 en/decoding using libcodec2 [no]
 230   --enable-libdav1d        enable AV1 decoding via libdav1d [no]
 231   --enable-libdavs2        enable AVS2 decoding via libdavs2 [no]
 232   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 233                            and libraw1394 [no]
 234   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 235   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 236   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
 237   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
 238   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
 239   --enable-libglslang      enable GLSL->SPIRV compilation via libglslang [no]
 240   --enable-libgme          enable Game Music Emu via libgme [no]
 241   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 242   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 243   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 244   --enable-libjack         enable JACK audio sound server [no]
 245   --enable-libklvanc       enable Kernel Labs VANC processing [no]
 246   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
 247   --enable-liblensfun      enable lensfun lens correction [no]
 248   --enable-libmodplug      enable ModPlug via libmodplug [no]
 249   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 250   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 251   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 252   --enable-libopencv       enable video filtering via libopencv [no]
 253   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 254   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 255   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
 256   --enable-libopus         enable Opus de/encoding via libopus [no]
 257   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 258   --enable-librabbitmq     enable RabbitMQ library [no]
 259   --enable-librav1e        enable AV1 encoding via rav1e [no]
 260   --enable-librsvg         enable SVG rasterization via librsvg [no]
 261   --enable-librubberband   enable rubberband needed for rubberband filter [no]
 262   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 263   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 264   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 265   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
 266   --enable-libsoxr         enable Include libsoxr resampling [no]
 267   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 268   --enable-libsrt          enable Haivision SRT protocol via libsrt [no]
 269   --enable-libssh          enable SFTP protocol via libssh [no]
 270   --enable-libtensorflow   enable TensorFlow as a DNN module backend
 271                            for DNN based filters like sr [no]
 272   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
 273   --enable-libtheora       enable Theora encoding via libtheora [no]
 274   --enable-libtls          enable LibreSSL (via libtls), needed for https support
 275                            if openssl, gnutls or mbedtls is not used [no]
 276   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 277   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 278   --enable-libvidstab      enable video stabilization using vid.stab [no]
 279   --enable-libvmaf         enable vmaf filter via libvmaf [no]
 280   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 281   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 282                            native implementation exists [no]
 283   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 284   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 285   --enable-libwebp         enable WebP encoding via libwebp [no]
 286   --enable-libx264         enable H.264 encoding via x264 [no]
 287   --enable-libx265         enable HEVC encoding via x265 [no]
 288   --enable-libxavs         enable AVS encoding via xavs [no]
 289   --enable-libxavs2        enable AVS2 encoding via xavs2 [no]
 290   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
 291   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
 292   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
 293   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
 294   --enable-libxvid         enable Xvid encoding via xvidcore,
 295                            native MPEG-4/Xvid encoder exists [no]
 296   --enable-libxml2         enable XML parsing using the C library libxml2, needed
 297                            for dash demuxing support [no]
 298   --enable-libzimg         enable z.lib, needed for zscale filter [no]
 299   --enable-libzmq          enable message passing via libzmq [no]
 300   --enable-libzvbi         enable teletext support via libzvbi [no]
 301   --enable-lv2             enable LV2 audio filtering [no]
 302   --disable-lzma           disable lzma [autodetect]
 303   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
 304   --enable-mbedtls         enable mbedTLS, needed for https support
 305                            if openssl, gnutls or libtls is not used [no]
 306   --enable-mediacodec      enable Android MediaCodec support [no]
 307   --enable-libmysofa       enable libmysofa, needed for sofalizer filter [no]
 308   --enable-openal          enable OpenAL 1.1 capture support [no]
 309   --enable-opencl          enable OpenCL processing [no]
 310   --enable-opengl          enable OpenGL rendering [no]
 311   --enable-openssl         enable openssl, needed for https support
 312                            if gnutls, libtls or mbedtls is not used [no]
 313   --enable-pocketsphinx    enable PocketSphinx, needed for asr filter [no]
 314   --disable-sndio          disable sndio support [autodetect]
 315   --disable-schannel       disable SChannel SSP, needed for TLS support on
 316                            Windows if openssl and gnutls are not used [autodetect]
 317   --disable-sdl2           disable sdl2 [autodetect]
 318   --disable-securetransport disable Secure Transport, needed for TLS support
 319                            on OSX if openssl and gnutls are not used [autodetect]
 320   --enable-vapoursynth     enable VapourSynth demuxer [no]
 321   --enable-vulkan          enable Vulkan code [no]
 322   --disable-xlib           disable xlib [autodetect]
 323   --disable-zlib           disable zlib [autodetect]
 324
 325   The following libraries provide various hardware acceleration features:
 326   --disable-amf            disable AMF video encoding code [autodetect]
 327   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
 328   --enable-cuda-nvcc       enable Nvidia CUDA compiler [no]
 329   --disable-cuda-llvm      disable CUDA compilation using clang [autodetect]
 330   --disable-cuvid          disable Nvidia CUVID support [autodetect]
 331   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
 332   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
 333   --disable-ffnvcodec      disable dynamically linked Nvidia code [autodetect]
 334   --enable-libdrm          enable DRM code (Linux) [no]
 335   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
 336   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
 337   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
 338   --disable-nvdec          disable Nvidia video decoding acceleration (via hwaccel) [autodetect]
 339   --disable-nvenc          disable Nvidia video encoding code [autodetect]
 340   --enable-omx             enable OpenMAX IL code [no]
 341   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
 342   --enable-rkmpp           enable Rockchip Media Process Platform code [no]
 343   --disable-v4l2-m2m       disable V4L2 mem2mem code [autodetect]
 344   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
 345   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
 346   --disable-videotoolbox   disable VideoToolbox code [autodetect]
 347
 348 Toolchain options:
 349   --arch=ARCH              select architecture [$arch]
 350   --cpu=CPU                select the minimum required CPU (affects
 351                            instruction selection, may crash on older CPUs)
 352   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 353   --progs-suffix=SUFFIX    program name suffix []
 354   --enable-cross-compile   assume a cross-compiler is used
 355   --sysroot=PATH           root of cross-build tree
 356   --sysinclude=PATH        location of cross-build system headers
 357   --target-os=OS           compiler targets OS [$target_os]
 358   --target-exec=CMD        command to run executables on target
 359   --target-path=DIR        path to view of build directory on target
 360   --target-samples=DIR     path to samples directory on target
 361   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 362   --toolchain=NAME         set tool defaults according to NAME
 363                            (gcc-asan, clang-asan, gcc-msan, clang-msan,
 364                            gcc-tsan, clang-tsan, gcc-usan, clang-usan,
 365                            valgrind-massif, valgrind-memcheck,
 366                            msvc, icl, gcov, llvm-cov, hardened)
 367   --nm=NM                  use nm tool NM [$nm_default]
 368   --ar=AR                  use archive tool AR [$ar_default]
 369   --as=AS                  use assembler AS [$as_default]
 370   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
 371   --strip=STRIP            use strip tool STRIP [$strip_default]
 372   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 373   --x86asmexe=EXE          use nasm-compatible assembler EXE [$x86asmexe_default]
 374   --cc=CC                  use C compiler CC [$cc_default]
 375   --cxx=CXX                use C compiler CXX [$cxx_default]
 376   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 377   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 378   --nvcc=NVCC              use Nvidia CUDA compiler NVCC or clang [$nvcc_default]
 379   --ld=LD                  use linker LD [$ld_default]
 380   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 381   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 382   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 383   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 384   --host-cc=HOSTCC         use host C compiler HOSTCC
 385   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 386   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 387   --host-ld=HOSTLD         use host linker HOSTLD
 388   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 389   --host-extralibs=HLIBS   use libs HLIBS when linking for host
 390   --host-os=OS             compiler host OS [$target_os]
 391   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 392   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 393   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 394   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 395   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 396   --extra-ldsoflags=ELDFLAGS add ELDFLAGS to LDSOFLAGS [$LDSOFLAGS]
 397   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 398   --extra-version=STRING   version string suffix []
 399   --optflags=OPTFLAGS      override optimization-related compiler flags
 400   --nvccflags=NVCCFLAGS    override nvcc flags [$nvccflags_default]
 401   --build-suffix=SUFFIX    library name suffix []
 402   --enable-pic             build position-independent code
 403   --enable-thumb           compile for Thumb instruction set
 404   --enable-lto             use link-time optimization
 405   --env="ENV=override"     override the environment variables
 406
 407 Advanced options (experts only):
 408   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 409   --custom-allocator=NAME  use a supported custom allocator
 410   --disable-symver         disable symbol versioning
 411   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 412   --disable-safe-bitstream-reader
 413                            disable buffer boundary checking in bitreaders
 414                            (faster, but may crash)
 415   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 416
 417 Optimization options (experts only):
 418   --disable-asm            disable all assembly optimizations
 419   --disable-altivec        disable AltiVec optimizations
 420   --disable-vsx            disable VSX optimizations
 421   --disable-power8         disable POWER8 optimizations
 422   --disable-amd3dnow       disable 3DNow! optimizations
 423   --disable-amd3dnowext    disable 3DNow! extended optimizations
 424   --disable-mmx            disable MMX optimizations
 425   --disable-mmxext         disable MMXEXT optimizations
 426   --disable-sse            disable SSE optimizations
 427   --disable-sse2           disable SSE2 optimizations
 428   --disable-sse3           disable SSE3 optimizations
 429   --disable-ssse3          disable SSSE3 optimizations
 430   --disable-sse4           disable SSE4 optimizations
 431   --disable-sse42          disable SSE4.2 optimizations
 432   --disable-avx            disable AVX optimizations
 433   --disable-xop            disable XOP optimizations
 434   --disable-fma3           disable FMA3 optimizations
 435   --disable-fma4           disable FMA4 optimizations
 436   --disable-avx2           disable AVX2 optimizations
 437   --disable-avx512         disable AVX-512 optimizations
 438   --disable-aesni          disable AESNI optimizations
 439   --disable-armv5te        disable armv5te optimizations
 440   --disable-armv6          disable armv6 optimizations
 441   --disable-armv6t2        disable armv6t2 optimizations
 442   --disable-vfp            disable VFP optimizations
 443   --disable-neon           disable NEON optimizations
 444   --disable-inline-asm     disable use of inline assembly
 445   --disable-x86asm         disable use of standalone x86 assembly
 446   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
 447   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 448   --disable-msa            disable MSA optimizations
 449   --disable-msa2           disable MSA2 optimizations
 450   --disable-mipsfpu        disable floating point MIPS optimizations
 451   --disable-mmi            disable Loongson SIMD optimizations
 452   --disable-fast-unaligned consider unaligned accesses slow
 453
 454 Developer options (useful when working on FFmpeg itself):
 455   --disable-debug          disable debugging symbols
 456   --enable-debug=LEVEL     set the debug level [$debuglevel]
 457   --disable-optimizations  disable compiler optimizations
 458   --enable-extra-warnings  enable more compiler warnings
 459   --disable-stripping      disable stripping of executables and shared libraries
 460   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 461                            2 causes a slowdown at runtime.
 462   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 463   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 464                            leaks and errors, using the specified valgrind binary.
 465                            Cannot be combined with --target-exec
 466   --enable-ftrapv          Trap arithmetic overflows
 467   --samples=PATH           location of test samples for FATE, if not set use
 468                            \$FATE_SAMPLES at make invocation time.
 469   --enable-neon-clobber-test check NEON registers for clobbering (should be
 470                            used only for debugging purposes)
 471   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 472                            should be used only for debugging purposes)
 473   --enable-random          randomly enable/disable components
 474   --disable-random
 475   --enable-random=LIST     randomly enable/disable specific components or
 476   --disable-random=LIST    component groups. LIST is a comma-separated list
 477                            of NAME[:PROB] entries where NAME is a component
 478                            (group) and PROB the probability associated with
 479                            NAME (default 0.5).
 480   --random-seed=VALUE      seed value for --enable/disable-random
 481   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 482                            (only applies to --disable-optimizations builds)
 483   --enable-ossfuzz         Enable building fuzzer tool
 484   --libfuzzer=PATH         path to libfuzzer
 485   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
 486                            in the name) of tests whose result is ignored
 487   --enable-linux-perf      enable Linux Performance Monitor API
 488   --disable-large-tests    disable tests that use a large amount of memory
 489
 490 NOTE: Object files are built at the place where configure is launched.
 491 EOF
 492   exit 0
 493 }
 494
 495 if test -t 1 && which tput >/dev/null 2>&1; then
 496     ncolors=$(tput colors)
 497     if test -n "$ncolors" && test $ncolors -ge 8; then
 498         bold_color=$(tput bold)
 499         warn_color=$(tput setaf 3)
 500         error_color=$(tput setaf 1)
 501         reset_color=$(tput sgr0)
 502     fi
 503     # 72 used instead of 80 since that's the default of pr
 504     ncols=$(tput cols)
 505 fi
 506 : ${ncols:=72}
 507
 508 log(){
 509     echo "$@" >> $logfile
 510 }
 511
 512 log_file(){
 513     log BEGIN "$1"
 514     log_file_i=1
 515     while IFS= read -r log_file_line; do
 516         printf '%5d\t%s\n' "$log_file_i" "$log_file_line"
 517         log_file_i=$(($log_file_i+1))
 518     done < "$1" >> "$logfile"
 519     log END "$1"
 520 }
 521
 522 warn(){
 523     log "WARNING: $*"
 524     WARNINGS="${WARNINGS}WARNING: $*\n"
 525 }
 526
 527 die(){
 528     log "$@"
 529     echo "$error_color$bold_color$@$reset_color"
 530     cat <<EOF
 531
 532 If you think configure made a mistake, make sure you are using the latest
 533 version from Git.  If the latest version fails, report the problem to the
 534 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 535 EOF
 536     if disabled logging; then
 537         cat <<EOF
 538 Rerun configure with logging enabled (do not use --disable-logging), and
 539 include the log this produces with your report.
 540 EOF
 541     else
 542         cat <<EOF
 543 Include the log file "$logfile" produced by configure as this will help
 544 solve the problem.
 545 EOF
 546     fi
 547     exit 1
 548 }
 549
 550 # Avoid locale weirdness, besides we really just want to translate ASCII.
 551 toupper(){
 552     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 553 }
 554
 555 tolower(){
 556     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 557 }
 558
 559 c_escape(){
 560     echo "$*" | sed 's/["\\]/\\\0/g'
 561 }
 562
 563 sh_quote(){
 564     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 565     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 566     echo "$v"
 567 }
 568
 569 cleanws(){
 570     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 571 }
 572
 573 filter(){
 574     pat=$1
 575     shift
 576     for v; do
 577         eval "case '$v' in $pat) printf '%s ' '$v' ;; esac"
 578     done
 579 }
 580
 581 filter_out(){
 582     pat=$1
 583     shift
 584     for v; do
 585         eval "case '$v' in $pat) ;; *) printf '%s ' '$v' ;; esac"
 586     done
 587 }
 588
 589 map(){
 590     m=$1
 591     shift
 592     for v; do eval $m; done
 593 }
 594
 595 add_suffix(){
 596     suffix=$1
 597     shift
 598     for v; do echo ${v}${suffix}; done
 599 }
 600
 601 remove_suffix(){
 602     suffix=$1
 603     shift
 604     for v; do echo ${v%$suffix}; done
 605 }
 606
 607 set_all(){
 608     value=$1
 609     shift
 610     for var in $*; do
 611         eval $var=$value
 612     done
 613 }
 614
 615 set_weak(){
 616     value=$1
 617     shift
 618     for var; do
 619         eval : \${$var:=$value}
 620     done
 621 }
 622
 623 sanitize_var_name(){
 624     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 625 }
 626
 627 set_sanitized(){
 628     var=$1
 629     shift
 630     eval $(sanitize_var_name "$var")='$*'
 631 }
 632
 633 get_sanitized(){
 634     eval echo \$$(sanitize_var_name "$1")
 635 }
 636
 637 pushvar(){
 638     for pvar in $*; do
 639         eval level=\${${pvar}_level:=0}
 640         eval ${pvar}_${level}="\$$pvar"
 641         eval ${pvar}_level=$(($level+1))
 642     done
 643 }
 644
 645 popvar(){
 646     for pvar in $*; do
 647         eval level=\${${pvar}_level:-0}
 648         test $level = 0 && continue
 649         eval level=$(($level-1))
 650         eval $pvar="\${${pvar}_${level}}"
 651         eval ${pvar}_level=$level
 652         eval unset ${pvar}_${level}
 653     done
 654 }
 655
 656 request(){
 657     for var in $*; do
 658         eval ${var}_requested=yes
 659         eval $var=
 660     done
 661 }
 662
 663 warn_if_gets_disabled(){
 664     for var in $*; do
 665         WARN_IF_GETS_DISABLED_LIST="$WARN_IF_GETS_DISABLED_LIST $var"
 666     done
 667 }
 668
 669 enable(){
 670     set_all yes $*
 671 }
 672
 673 disable(){
 674     set_all no $*
 675 }
 676
 677 disable_with_reason(){
 678     disable $1
 679     eval "${1}_disable_reason=\"$2\""
 680     if requested $1; then
 681         die "ERROR: $1 requested, but $2"
 682     fi
 683 }
 684
 685 enable_weak(){
 686     set_weak yes $*
 687 }
 688
 689 disable_weak(){
 690     set_weak no $*
 691 }
 692
 693 enable_sanitized(){
 694     for var; do
 695         enable $(sanitize_var_name $var)
 696     done
 697 }
 698
 699 disable_sanitized(){
 700     for var; do
 701         disable $(sanitize_var_name $var)
 702     done
 703 }
 704
 705 do_enable_deep(){
 706     for var; do
 707         enabled $var && continue
 708         set -- $var
 709         eval enable_deep \$${var}_select
 710         var=$1
 711         eval enable_deep_weak \$${var}_suggest
 712     done
 713 }
 714
 715 enable_deep(){
 716     do_enable_deep $*
 717     enable $*
 718 }
 719
 720 enable_deep_weak(){
 721     for var; do
 722         disabled $var && continue
 723         set -- $var
 724         do_enable_deep $var
 725         var=$1
 726         enable_weak $var
 727     done
 728 }
 729
 730 requested(){
 731     test "${1#!}" = "$1" && op="=" || op="!="
 732     eval test "x\$${1#!}_requested" $op "xyes"
 733 }
 734
 735 enabled(){
 736     test "${1#!}" = "$1" && op="=" || op="!="
 737     eval test "x\$${1#!}" $op "xyes"
 738 }
 739
 740 disabled(){
 741     test "${1#!}" = "$1" && op="=" || op="!="
 742     eval test "x\$${1#!}" $op "xno"
 743 }
 744
 745 enabled_all(){
 746     for opt; do
 747         enabled $opt || return 1
 748     done
 749 }
 750
 751 disabled_all(){
 752     for opt; do
 753         disabled $opt || return 1
 754     done
 755 }
 756
 757 enabled_any(){
 758     for opt; do
 759         enabled $opt && return 0
 760     done
 761 }
 762
 763 disabled_any(){
 764     for opt; do
 765         disabled $opt && return 0
 766     done
 767     return 1
 768 }
 769
 770 set_default(){
 771     for opt; do
 772         eval : \${$opt:=\$${opt}_default}
 773     done
 774 }
 775
 776 is_in(){
 777     value=$1
 778     shift
 779     for var in $*; do
 780         [ $var = $value ] && return 0
 781     done
 782     return 1
 783 }
 784
 785 # The cfg loop is very hot (several thousands iterations), and in bash also
 786 # potentialy quite slow. Try to abort the iterations early, preferably without
 787 # calling functions. 70%+ of the time cfg is already done or without deps.
 788 check_deps(){
 789     for cfg; do
 790         eval [ x\$${cfg}_checking = xdone ] && continue
 791         eval [ x\$${cfg}_checking = xinprogress ] && die "Circular dependency for $cfg."
 792
 793         eval "
 794         dep_all=\$${cfg}_deps
 795         dep_any=\$${cfg}_deps_any
 796         dep_con=\$${cfg}_conflict
 797         dep_sel=\$${cfg}_select
 798         dep_sgs=\$${cfg}_suggest
 799         dep_ifa=\$${cfg}_if
 800         dep_ifn=\$${cfg}_if_any
 801         "
 802
 803         # most of the time here $cfg has no deps - avoid costly no-op work
 804         if [ "$dep_all$dep_any$dep_con$dep_sel$dep_sgs$dep_ifa$dep_ifn" ]; then
 805             eval ${cfg}_checking=inprogress
 806
 807             set -- $cfg "$dep_all" "$dep_any" "$dep_con" "$dep_sel" "$dep_sgs" "$dep_ifa" "$dep_ifn"
 808             check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
 809             cfg=$1; dep_all=$2; dep_any=$3; dep_con=$4; dep_sel=$5 dep_sgs=$6; dep_ifa=$7; dep_ifn=$8
 810
 811             [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 812             [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 813             enabled_all  $dep_all || { disable_with_reason $cfg "not all dependencies are satisfied: $dep_all"; }
 814             enabled_any  $dep_any || { disable_with_reason $cfg "not any dependency is satisfied: $dep_any"; }
 815             disabled_all $dep_con || { disable_with_reason $cfg "some conflicting dependencies are unsatisfied: $dep_con"; }
 816             disabled_any $dep_sel && { disable_with_reason $cfg "some selected dependency is unsatisfied: $dep_sel"; }
 817
 818             enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
 819
 820             for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
 821                 # filter out library deps, these do not belong in extralibs
 822                 is_in $dep $LIBRARY_LIST && continue
 823                 enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
 824             done
 825         fi
 826
 827         eval ${cfg}_checking=done
 828     done
 829 }
 830
 831 print_config(){
 832     pfx=$1
 833     files=$2
 834     shift 2
 835     map 'eval echo "$v \${$v:-no}"' "$@" |
 836     awk "BEGIN { split(\"$files\", files) }
 837         {
 838             c = \"$pfx\" toupper(\$1);
 839             v = \$2;
 840             sub(/yes/, 1, v);
 841             sub(/no/,  0, v);
 842             for (f in files) {
 843                 file = files[f];
 844                 if (file ~ /\\.h\$/) {
 845                     printf(\"#define %s %d\\n\", c, v) >>file;
 846                 } else if (file ~ /\\.asm\$/) {
 847                     printf(\"%%define %s %d\\n\", c, v) >>file;
 848                 } else if (file ~ /\\.mak\$/) {
 849                     n = -v ? \"\" : \"!\";
 850                     printf(\"%s%s=yes\\n\", n, c) >>file;
 851                 } else if (file ~ /\\.texi\$/) {
 852                     pre = -v ? \"\" : \"@c \";
 853                     yesno = \$2;
 854                     c2 = tolower(c);
 855                     gsub(/_/, \"-\", c2);
 856                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 857                 }
 858             }
 859         }"
 860 }
 861
 862 print_enabled(){
 863     suf=$1
 864     shift
 865     for v; do
 866         enabled $v && printf "%s\n" ${v%$suf}
 867     done
 868 }
 869
 870 append(){
 871     var=$1
 872     shift
 873     eval "$var=\"\$$var $*\""
 874 }
 875
 876 prepend(){
 877     var=$1
 878     shift
 879     eval "$var=\"$* \$$var\""
 880 }
 881
 882 reverse () {
 883     eval '
 884         reverse_out=
 885         for v in $'$1'; do
 886             reverse_out="$v $reverse_out"
 887         done
 888         '$1'=$reverse_out
 889     '
 890 }
 891
 892 # keeps the last occurence of each non-unique item
 893 unique(){
 894     unique_out=
 895     eval unique_in=\$$1
 896     reverse unique_in
 897     for v in $unique_in; do
 898         # " $unique_out" +space such that every item is surrounded with spaces
 899         case " $unique_out" in *" $v "*) continue; esac  # already in list
 900         unique_out="$unique_out$v "
 901     done
 902     reverse unique_out
 903     eval $1=\$unique_out
 904 }
 905
 906 resolve(){
 907     resolve_out=
 908     eval resolve_in=\$$1
 909     for v in $resolve_in; do
 910         eval 'resolve_out="$resolve_out$'$v' "'
 911     done
 912     eval $1=\$resolve_out
 913 }
 914
 915 add_cppflags(){
 916     append CPPFLAGS "$@"
 917 }
 918
 919 add_cflags(){
 920     append CFLAGS $($cflags_filter "$@")
 921 }
 922
 923 add_cflags_headers(){
 924     append CFLAGS_HEADERS $($cflags_filter "$@")
 925 }
 926
 927 add_cxxflags(){
 928     append CXXFLAGS $($cflags_filter "$@")
 929 }
 930
 931 add_objcflags(){
 932     append OBJCFLAGS $($objcflags_filter "$@")
 933 }
 934
 935 add_asflags(){
 936     append ASFLAGS $($asflags_filter "$@")
 937 }
 938
 939 add_ldflags(){
 940     append LDFLAGS $($ldflags_filter "$@")
 941 }
 942
 943 add_ldexeflags(){
 944     append LDEXEFLAGS $($ldflags_filter "$@")
 945 }
 946
 947 add_ldsoflags(){
 948     append LDSOFLAGS $($ldflags_filter "$@")
 949 }
 950
 951 add_extralibs(){
 952     prepend extralibs $($ldflags_filter "$@")
 953 }
 954
 955 add_stripflags(){
 956     append ASMSTRIPFLAGS "$@"
 957 }
 958
 959 add_host_cppflags(){
 960     append host_cppflags "$@"
 961 }
 962
 963 add_host_cflags(){
 964     append host_cflags $($host_cflags_filter "$@")
 965 }
 966
 967 add_host_ldflags(){
 968     append host_ldflags $($host_ldflags_filter "$@")
 969 }
 970
 971 add_compat(){
 972     append compat_objs $1
 973     shift
 974     map 'add_cppflags -D$v' "$@"
 975 }
 976
 977 test_cmd(){
 978     log "$@"
 979     "$@" >> $logfile 2>&1
 980 }
 981
 982 test_stat(){
 983     log test_stat "$@"
 984     stat "$1" >> $logfile 2>&1
 985 }
 986
 987 cc_e(){
 988     eval printf '%s\\n' $CC_E
 989 }
 990
 991 cc_o(){
 992     eval printf '%s\\n' $CC_O
 993 }
 994
 995 as_o(){
 996     eval printf '%s\\n' $AS_O
 997 }
 998
 999 x86asm_o(){
1000     eval printf '%s\\n' $X86ASM_O
1001 }
1002
1003 ld_o(){
1004     eval printf '%s\\n' $LD_O
1005 }
1006
1007 hostcc_e(){
1008     eval printf '%s\\n' $HOSTCC_E
1009 }
1010
1011 hostcc_o(){
1012     eval printf '%s\\n' $HOSTCC_O
1013 }
1014
1015 nvcc_o(){
1016     eval printf '%s\\n' $NVCC_O
1017 }
1018
1019 test_cc(){
1020     log test_cc "$@"
1021     cat > $TMPC
1022     log_file $TMPC
1023     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
1024 }
1025
1026 test_cxx(){
1027     log test_cxx "$@"
1028     cat > $TMPCPP
1029     log_file $TMPCPP
1030     test_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
1031 }
1032
1033 test_objcc(){
1034     log test_objcc "$@"
1035     cat > $TMPM
1036     log_file $TMPM
1037     test_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
1038 }
1039
1040 test_nvcc(){
1041     log test_nvcc "$@"
1042     cat > $TMPCU
1043     log_file $TMPCU
1044     tmpcu_=$TMPCU
1045     tmpo_=$TMPO
1046     [ -x "$(command -v cygpath)" ] && tmpcu_=$(cygpath -m $tmpcu_) && tmpo_=$(cygpath -m $tmpo_)
1047     test_cmd $nvcc $nvccflags "$@" $NVCC_C $(nvcc_o $tmpo_) $tmpcu_
1048 }
1049
1050 check_nvcc() {
1051     log check_nvcc "$@"
1052     name=$1
1053     shift 1
1054     disabled $name && return
1055     disable $name
1056     test_nvcc "$@" <<EOF && enable $name
1057 extern "C" {
1058     __global__ void hello(unsigned char *data) {}
1059 }
1060 EOF
1061 }
1062
1063 test_cpp(){
1064     log test_cpp "$@"
1065     cat > $TMPC
1066     log_file $TMPC
1067     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
1068 }
1069
1070 test_as(){
1071     log test_as "$@"
1072     cat > $TMPS
1073     log_file $TMPS
1074     test_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
1075 }
1076
1077 test_x86asm(){
1078     log test_x86asm "$@"
1079     echo "$1" > $TMPASM
1080     log_file $TMPASM
1081     shift
1082     test_cmd $x86asmexe $X86ASMFLAGS -Werror "$@" $(x86asm_o $TMPO) $TMPASM
1083 }
1084
1085 check_cmd(){
1086     log check_cmd "$@"
1087     cmd=$1
1088     disabled $cmd && return
1089     disable $cmd
1090     test_cmd $@ && enable $cmd
1091 }
1092
1093 check_as(){
1094     log check_as "$@"
1095     name=$1
1096     code=$2
1097     shift 2
1098     disable $name
1099     test_as $@ <<EOF && enable $name
1100 $code
1101 EOF
1102 }
1103
1104 check_inline_asm(){
1105     log check_inline_asm "$@"
1106     name="$1"
1107     code="$2"
1108     shift 2
1109     disable $name
1110     test_cc "$@" <<EOF && enable $name
1111 void foo(void){ __asm__ volatile($code); }
1112 EOF
1113 }
1114
1115 check_inline_asm_flags(){
1116     log check_inline_asm_flags "$@"
1117     name="$1"
1118     code="$2"
1119     flags=''
1120     shift 2
1121     while [ "$1" != "" ]; do
1122       append flags $1
1123       shift
1124     done;
1125     disable $name
1126     cat > $TMPC <<EOF
1127 void foo(void){ __asm__ volatile($code); }
1128 EOF
1129     log_file $TMPC
1130     test_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
1131     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
1132 }
1133
1134 check_insn(){
1135     log check_insn "$@"
1136     check_inline_asm ${1}_inline "\"$2\""
1137     check_as ${1}_external "$2"
1138 }
1139
1140 check_x86asm(){
1141     log check_x86asm "$@"
1142     name=$1
1143     shift
1144     disable $name
1145     test_x86asm "$@" && enable $name
1146 }
1147
1148 test_ld(){
1149     log test_ld "$@"
1150     type=$1
1151     shift 1
1152     flags=$(filter_out '-l*|*.so' $@)
1153     libs=$(filter '-l*|*.so' $@)
1154     test_$type $($cflags_filter $flags) || return
1155     flags=$($ldflags_filter $flags)
1156     libs=$($ldflags_filter $libs)
1157     test_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1158 }
1159
1160 check_ld(){
1161     log check_ld "$@"
1162     type=$1
1163     name=$2
1164     shift 2
1165     disable $name
1166     test_ld $type $@ && enable $name
1167 }
1168
1169 print_include(){
1170     hdr=$1
1171     test "${hdr%.h}" = "${hdr}" &&
1172         echo "#include $hdr"    ||
1173         echo "#include <$hdr>"
1174 }
1175
1176 test_code(){
1177     log test_code "$@"
1178     check=$1
1179     headers=$2
1180     code=$3
1181     shift 3
1182     {
1183         for hdr in $headers; do
1184             print_include $hdr
1185         done
1186         echo "int main(void) { $code; return 0; }"
1187     } | test_$check "$@"
1188 }
1189
1190 check_cppflags(){
1191     log check_cppflags "$@"
1192     test_cpp "$@" <<EOF && append CPPFLAGS "$@"
1193 #include <stdlib.h>
1194 EOF
1195 }
1196
1197 test_cflags(){
1198     log test_cflags "$@"
1199     set -- $($cflags_filter "$@")
1200     test_cc "$@" <<EOF
1201 int x;
1202 EOF
1203 }
1204
1205 check_cflags(){
1206     log check_cflags "$@"
1207     test_cflags "$@" && add_cflags "$@"
1208 }
1209
1210 check_cxxflags(){
1211     log check_cxxflags "$@"
1212     set -- $($cflags_filter "$@")
1213     test_cxx "$@" <<EOF && append CXXFLAGS "$@"
1214 int x;
1215 EOF
1216 }
1217
1218 test_objcflags(){
1219     log test_objcflags "$@"
1220     set -- $($objcflags_filter "$@")
1221     test_objcc "$@" <<EOF
1222 int x;
1223 EOF
1224 }
1225
1226 check_objcflags(){
1227     log check_objcflags "$@"
1228     test_objcflags "$@" && add_objcflags "$@"
1229 }
1230
1231 test_ldflags(){
1232     log test_ldflags "$@"
1233     set -- $($ldflags_filter "$@")
1234     test_ld "cc" "$@" <<EOF
1235 int main(void){ return 0; }
1236 EOF
1237 }
1238
1239 check_ldflags(){
1240     log check_ldflags "$@"
1241     test_ldflags "$@" && add_ldflags "$@"
1242 }
1243
1244 test_stripflags(){
1245     log test_stripflags "$@"
1246     # call test_cc to get a fresh TMPO
1247     test_cc <<EOF
1248 int main(void) { return 0; }
1249 EOF
1250     test_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1251 }
1252
1253 check_stripflags(){
1254     log check_stripflags "$@"
1255     test_stripflags "$@" && add_stripflags "$@"
1256 }
1257
1258 check_headers(){
1259     log check_headers "$@"
1260     headers=$1
1261     shift
1262     disable_sanitized $headers
1263     {
1264         for hdr in $headers; do
1265             print_include $hdr
1266         done
1267         echo "int x;"
1268     } | test_cpp "$@" && enable_sanitized $headers
1269 }
1270
1271 check_header_objcc(){
1272     log check_header_objcc "$@"
1273     rm -f -- "$TMPO"
1274     header=$1
1275     shift
1276     disable_sanitized $header
1277     {
1278        echo "#include <$header>"
1279        echo "int main(void) { return 0; }"
1280     } | test_objcc && test_stat "$TMPO" && enable_sanitized $header
1281 }
1282
1283 check_apple_framework(){
1284     log check_apple_framework "$@"
1285     framework="$1"
1286     name="$(tolower $framework)"
1287     header="${framework}/${framework}.h"
1288     disable $name
1289     check_header_objcc $header &&
1290         enable $name && eval ${name}_extralibs='"-framework $framework"'
1291 }
1292
1293 check_func(){
1294     log check_func "$@"
1295     func=$1
1296     shift
1297     disable $func
1298     test_ld "cc" "$@" <<EOF && enable $func
1299 extern int $func();
1300 int main(void){ $func(); }
1301 EOF
1302 }
1303
1304 check_complexfunc(){
1305     log check_complexfunc "$@"
1306     func=$1
1307     narg=$2
1308     shift 2
1309     test $narg = 2 && args="f, g" || args="f * I"
1310     disable $func
1311     test_ld "cc" "$@" <<EOF && enable $func
1312 #include <complex.h>
1313 #include <math.h>
1314 float foo(complex float f, complex float g) { return $func($args); }
1315 int main(void){ return (int) foo; }
1316 EOF
1317 }
1318
1319 check_mathfunc(){
1320     log check_mathfunc "$@"
1321     func=$1
1322     narg=$2
1323     shift 2
1324     test $narg = 2 && args="f, g" || args="f"
1325     disable $func
1326     test_ld "cc" "$@" <<EOF && enable $func
1327 #include <math.h>
1328 float foo(float f, float g) { return $func($args); }
1329 int main(void){ return (int) foo; }
1330 EOF
1331 }
1332
1333 check_func_headers(){
1334     log check_func_headers "$@"
1335     headers=$1
1336     funcs=$2
1337     shift 2
1338     {
1339         for hdr in $headers; do
1340             print_include $hdr
1341         done
1342         echo "#include <stdint.h>"
1343         for func in $funcs; do
1344             echo "long check_$func(void) { return (long) $func; }"
1345         done
1346         echo "int main(void) { int ret = 0;"
1347         # LTO could optimize out the test functions without this
1348         for func in $funcs; do
1349             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1350         done
1351         echo "return ret; }"
1352     } | test_ld "cc" "$@" && enable $funcs && enable_sanitized $headers
1353 }
1354
1355 check_class_headers_cpp(){
1356     log check_class_headers_cpp "$@"
1357     headers=$1
1358     classes=$2
1359     shift 2
1360     {
1361         for hdr in $headers; do
1362             echo "#include <$hdr>"
1363         done
1364         echo "int main(void) { "
1365         i=1
1366         for class in $classes; do
1367             echo "$class obj$i;"
1368             i=$(expr $i + 1)
1369         done
1370         echo "return 0; }"
1371     } | test_ld "cxx" "$@" && enable $funcs && enable_sanitized $headers
1372 }
1373
1374 test_cpp_condition(){
1375     log test_cpp_condition "$@"
1376     header=$1
1377     condition=$2
1378     shift 2
1379     test_cpp "$@" <<EOF
1380 #include <$header>
1381 #if !($condition)
1382 #error "unsatisfied condition: $condition"
1383 #endif
1384 EOF
1385 }
1386
1387 check_cpp_condition(){
1388     log check_cpp_condition "$@"
1389     name=$1
1390     shift 1
1391     disable $name
1392     test_cpp_condition "$@" && enable $name
1393 }
1394
1395 test_cflags_cc(){
1396     log test_cflags_cc "$@"
1397     flags=$1
1398     header=$2
1399     condition=$3
1400     shift 3
1401     set -- $($cflags_filter "$flags")
1402     test_cc "$@" <<EOF
1403 #include <$header>
1404 #if !($condition)
1405 #error "unsatisfied condition: $condition"
1406 #endif
1407 EOF
1408 }
1409
1410 check_lib(){
1411     log check_lib "$@"
1412     name="$1"
1413     headers="$2"
1414     funcs="$3"
1415     shift 3
1416     disable $name
1417     check_func_headers "$headers" "$funcs" "$@" &&
1418         enable $name && eval ${name}_extralibs="\$@"
1419 }
1420
1421 check_lib_cpp(){
1422     log check_lib_cpp "$@"
1423     name="$1"
1424     headers="$2"
1425     classes="$3"
1426     shift 3
1427     disable $name
1428     check_class_headers_cpp "$headers" "$classes" "$@" &&
1429         enable $name && eval ${name}_extralibs="\$@"
1430 }
1431
1432 test_pkg_config(){
1433     log test_pkg_config "$@"
1434     name="$1"
1435     pkg_version="$2"
1436     pkg="${2%% *}"
1437     headers="$3"
1438     funcs="$4"
1439     shift 4
1440     disable $name
1441     test_cmd $pkg_config --exists --print-errors $pkg_version || return
1442     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1443     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1444     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1445         enable $name &&
1446         set_sanitized "${name}_cflags"    $pkg_cflags &&
1447         set_sanitized "${name}_extralibs" $pkg_libs
1448 }
1449
1450 check_pkg_config(){
1451     log check_pkg_config "$@"
1452     name="$1"
1453     test_pkg_config "$@" &&
1454         eval add_cflags \$${name}_cflags
1455 }
1456
1457 test_exec(){
1458     test_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1459 }
1460
1461 check_exec_crash(){
1462     log check_exec_crash "$@"
1463     code=$(cat)
1464
1465     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1466     # are safe but may not be available everywhere.  Thus we use
1467     # raise(SIGTERM) instead.  The check is run in a subshell so we
1468     # can redirect the "Terminated" message from the shell.  SIGBUS
1469     # is not defined by standard C so it is used conditionally.
1470
1471     (test_exec "$@") >> $logfile 2>&1 <<EOF
1472 #include <signal.h>
1473 static void sighandler(int sig){
1474     raise(SIGTERM);
1475 }
1476 int foo(void){
1477     $code
1478 }
1479 int (*func_ptr)(void) = foo;
1480 int main(void){
1481     signal(SIGILL, sighandler);
1482     signal(SIGFPE, sighandler);
1483     signal(SIGSEGV, sighandler);
1484 #ifdef SIGBUS
1485     signal(SIGBUS, sighandler);
1486 #endif
1487     return func_ptr();
1488 }
1489 EOF
1490 }
1491
1492 check_type(){
1493     log check_type "$@"
1494     headers=$1
1495     type=$2
1496     shift 2
1497     disable_sanitized "$type"
1498     test_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1499 }
1500
1501 check_struct(){
1502     log check_struct "$@"
1503     headers=$1
1504     struct=$2
1505     member=$3
1506     shift 3
1507     disable_sanitized "${struct}_${member}"
1508     test_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1509         enable_sanitized "${struct}_${member}"
1510 }
1511
1512 check_builtin(){
1513     log check_builtin "$@"
1514     name=$1
1515     headers=$2
1516     builtin=$3
1517     shift 3
1518     disable "$name"
1519     test_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1520 }
1521
1522 check_compile_assert(){
1523     log check_compile_assert "$@"
1524     name=$1
1525     headers=$2
1526     condition=$3
1527     shift 3
1528     disable "$name"
1529     test_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1530 }
1531
1532 check_cc(){
1533     log check_cc "$@"
1534     name=$1
1535     shift
1536     disable "$name"
1537     test_code cc "$@" && enable "$name"
1538 }
1539
1540 require(){
1541     log require "$@"
1542     name_version="$1"
1543     name="${1%% *}"
1544     shift
1545     check_lib $name "$@" || die "ERROR: $name_version not found"
1546 }
1547
1548 require_cc(){
1549     log require_cc "$@"
1550     name="$1"
1551     check_cc "$@" || die "ERROR: $name failed"
1552 }
1553
1554 require_cpp(){
1555     log require_cpp "$@"
1556     name_version="$1"
1557     name="${1%% *}"
1558     shift
1559     check_lib_cpp "$name" "$@" || die "ERROR: $name_version not found"
1560 }
1561
1562 require_headers(){
1563     log require_headers "$@"
1564     headers="$1"
1565     check_headers "$@" || die "ERROR: $headers not found"
1566 }
1567
1568 require_cpp_condition(){
1569     log require_cpp_condition "$@"
1570     condition="$3"
1571     check_cpp_condition "$@" || die "ERROR: $condition not satisfied"
1572 }
1573
1574 require_pkg_config(){
1575     log require_pkg_config "$@"
1576     pkg_version="$2"
1577     check_pkg_config "$@" || die "ERROR: $pkg_version not found using pkg-config$pkg_config_fail_message"
1578 }
1579
1580 test_host_cc(){
1581     log test_host_cc "$@"
1582     cat > $TMPC
1583     log_file $TMPC
1584     test_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1585 }
1586
1587 test_host_cpp(){
1588     log test_host_cpp "$@"
1589     cat > $TMPC
1590     log_file $TMPC
1591     test_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1592 }
1593
1594 check_host_cppflags(){
1595     log check_host_cppflags "$@"
1596     test_host_cpp "$@" <<EOF && append host_cppflags "$@"
1597 #include <stdlib.h>
1598 EOF
1599 }
1600
1601 check_host_cflags(){
1602     log check_host_cflags "$@"
1603     set -- $($host_cflags_filter "$@")
1604     test_host_cc "$@" <<EOF && append host_cflags "$@"
1605 int x;
1606 EOF
1607 }
1608
1609 test_host_cpp_condition(){
1610     log test_host_cpp_condition "$@"
1611     header=$1
1612     condition=$2
1613     shift 2
1614     test_host_cpp "$@" <<EOF
1615 #include <$header>
1616 #if !($condition)
1617 #error "unsatisfied condition: $condition"
1618 #endif
1619 EOF
1620 }
1621
1622 check_host_cpp_condition(){
1623     log check_host_cpp_condition "$@"
1624     name=$1
1625     shift 1
1626     disable $name
1627     test_host_cpp_condition "$@" && enable $name
1628 }
1629
1630 cp_if_changed(){
1631     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1632     mkdir -p "$(dirname $2)"
1633     cp -f "$1" "$2"
1634 }
1635
1636 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1637 # system-dependent things.
1638
1639 AVCODEC_COMPONENTS="
1640     bsfs
1641     decoders
1642     encoders
1643     hwaccels
1644     parsers
1645 "
1646
1647 AVDEVICE_COMPONENTS="
1648     indevs
1649     outdevs
1650 "
1651
1652 AVFILTER_COMPONENTS="
1653     filters
1654 "
1655
1656 AVFORMAT_COMPONENTS="
1657     demuxers
1658     muxers
1659     protocols
1660 "
1661
1662 COMPONENT_LIST="
1663     $AVCODEC_COMPONENTS
1664     $AVDEVICE_COMPONENTS
1665     $AVFILTER_COMPONENTS
1666     $AVFORMAT_COMPONENTS
1667 "
1668
1669 EXAMPLE_LIST="
1670     avio_list_dir_example
1671     avio_reading_example
1672     decode_audio_example
1673     decode_video_example
1674     demuxing_decoding_example
1675     encode_audio_example
1676     encode_video_example
1677     extract_mvs_example
1678     filter_audio_example
1679     filtering_audio_example
1680     filtering_video_example
1681     http_multiclient_example
1682     hw_decode_example
1683     metadata_example
1684     muxing_example
1685     qsvdec_example
1686     remuxing_example
1687     resampling_audio_example
1688     scaling_video_example
1689     transcode_aac_example
1690     transcoding_example
1691     vaapi_encode_example
1692     vaapi_transcode_example
1693 "
1694
1695 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1696     alsa
1697     appkit
1698     avfoundation
1699     bzlib
1700     coreimage
1701     iconv
1702     libxcb
1703     libxcb_shm
1704     libxcb_shape
1705     libxcb_xfixes
1706     lzma
1707     schannel
1708     sdl2
1709     securetransport
1710     sndio
1711     xlib
1712     zlib
1713 "
1714
1715 EXTERNAL_LIBRARY_GPL_LIST="
1716     avisynth
1717     frei0r
1718     libcdio
1719     libdavs2
1720     librubberband
1721     libvidstab
1722     libx264
1723     libx265
1724     libxavs
1725     libxavs2
1726     libxvid
1727 "
1728
1729 EXTERNAL_LIBRARY_NONFREE_LIST="
1730     decklink
1731     libfdk_aac
1732     openssl
1733     libtls
1734 "
1735
1736 EXTERNAL_LIBRARY_VERSION3_LIST="
1737     gmp
1738     libaribb24
1739     liblensfun
1740     libopencore_amrnb
1741     libopencore_amrwb
1742     libvmaf
1743     libvo_amrwbenc
1744     mbedtls
1745     rkmpp
1746 "
1747
1748 EXTERNAL_LIBRARY_GPLV3_LIST="
1749     libsmbclient
1750 "
1751
1752 EXTERNAL_LIBRARY_LIST="
1753     $EXTERNAL_LIBRARY_GPL_LIST
1754     $EXTERNAL_LIBRARY_NONFREE_LIST
1755     $EXTERNAL_LIBRARY_VERSION3_LIST
1756     $EXTERNAL_LIBRARY_GPLV3_LIST
1757     chromaprint
1758     gcrypt
1759     gnutls
1760     jni
1761     ladspa
1762     libaom
1763     libass
1764     libbluray
1765     libbs2b
1766     libcaca
1767     libcelt
1768     libcodec2
1769     libdav1d
1770     libdc1394
1771     libdrm
1772     libflite
1773     libfontconfig
1774     libfreetype
1775     libfribidi
1776     libglslang
1777     libgme
1778     libgsm
1779     libiec61883
1780     libilbc
1781     libjack
1782     libklvanc
1783     libkvazaar
1784     libmodplug
1785     libmp3lame
1786     libmysofa
1787     libopencv
1788     libopenh264
1789     libopenjpeg
1790     libopenmpt
1791     libopus
1792     libpulse
1793     librabbitmq
1794     librav1e
1795     librsvg
1796     librtmp
1797     libshine
1798     libsmbclient
1799     libsnappy
1800     libsoxr
1801     libspeex
1802     libsrt
1803     libssh
1804     libtensorflow
1805     libtesseract
1806     libtheora
1807     libtwolame
1808     libv4l2
1809     libvorbis
1810     libvpx
1811     libwavpack
1812     libwebp
1813     libxml2
1814     libzimg
1815     libzmq
1816     libzvbi
1817     lv2
1818     mediacodec
1819     openal
1820     opengl
1821     pocketsphinx
1822     vapoursynth
1823 "
1824
1825 HWACCEL_AUTODETECT_LIBRARY_LIST="
1826     amf
1827     audiotoolbox
1828     crystalhd
1829     cuda
1830     cuda_llvm
1831     cuvid
1832     d3d11va
1833     dxva2
1834     ffnvcodec
1835     nvdec
1836     nvenc
1837     vaapi
1838     vdpau
1839     videotoolbox
1840     v4l2_m2m
1841     xvmc
1842 "
1843
1844 # catchall list of things that require external libs to link
1845 EXTRALIBS_LIST="
1846     cpu_init
1847     cws2fws
1848 "
1849
1850 HWACCEL_LIBRARY_NONFREE_LIST="
1851     cuda_nvcc
1852     cuda_sdk
1853     libnpp
1854 "
1855
1856 HWACCEL_LIBRARY_LIST="
1857     $HWACCEL_LIBRARY_NONFREE_LIST
1858     libmfx
1859     mmal
1860     omx
1861     opencl
1862     vulkan
1863 "
1864
1865 DOCUMENT_LIST="
1866     doc
1867     htmlpages
1868     manpages
1869     podpages
1870     txtpages
1871 "
1872
1873 FEATURE_LIST="
1874     ftrapv
1875     gray
1876     hardcoded_tables
1877     omx_rpi
1878     runtime_cpudetect
1879     safe_bitstream_reader
1880     shared
1881     small
1882     static
1883     swscale_alpha
1884 "
1885
1886 # this list should be kept in linking order
1887 LIBRARY_LIST="
1888     avdevice
1889     avfilter
1890     swscale
1891     postproc
1892     avformat
1893     avcodec
1894     swresample
1895     avresample
1896     avutil
1897 "
1898
1899 LICENSE_LIST="
1900     gpl
1901     nonfree
1902     version3
1903 "
1904
1905 PROGRAM_LIST="
1906     ffplay
1907     ffprobe
1908     ffmpeg
1909 "
1910
1911 SUBSYSTEM_LIST="
1912     dct
1913     dwt
1914     error_resilience
1915     faan
1916     fast_unaligned
1917     fft
1918     lsp
1919     lzo
1920     mdct
1921     pixelutils
1922     network
1923     rdft
1924 "
1925
1926 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1927 CONFIG_LIST="
1928     $DOCUMENT_LIST
1929     $EXAMPLE_LIST
1930     $EXTERNAL_LIBRARY_LIST
1931     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1932     $HWACCEL_LIBRARY_LIST
1933     $HWACCEL_AUTODETECT_LIBRARY_LIST
1934     $FEATURE_LIST
1935     $LICENSE_LIST
1936     $LIBRARY_LIST
1937     $PROGRAM_LIST
1938     $SUBSYSTEM_LIST
1939     autodetect
1940     fontconfig
1941     large_tests
1942     linux_perf
1943     memory_poisoning
1944     neon_clobber_test
1945     ossfuzz
1946     pic
1947     thumb
1948     valgrind_backtrace
1949     xmm_clobber_test
1950     $COMPONENT_LIST
1951 "
1952
1953 THREADS_LIST="
1954     pthreads
1955     os2threads
1956     w32threads
1957 "
1958
1959 ATOMICS_LIST="
1960     atomics_gcc
1961     atomics_suncc
1962     atomics_win32
1963 "
1964
1965 AUTODETECT_LIBS="
1966     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1967     $HWACCEL_AUTODETECT_LIBRARY_LIST
1968     $THREADS_LIST
1969 "
1970
1971 ARCH_LIST="
1972     aarch64
1973     alpha
1974     arm
1975     avr32
1976     avr32_ap
1977     avr32_uc
1978     bfin
1979     ia64
1980     m68k
1981     mips
1982     mips64
1983     parisc
1984     ppc
1985     ppc64
1986     s390
1987     sh4
1988     sparc
1989     sparc64
1990     tilegx
1991     tilepro
1992     tomi
1993     x86
1994     x86_32
1995     x86_64
1996 "
1997
1998 ARCH_EXT_LIST_ARM="
1999     armv5te
2000     armv6
2001     armv6t2
2002     armv8
2003     neon
2004     vfp
2005     vfpv3
2006     setend
2007 "
2008
2009 ARCH_EXT_LIST_MIPS="
2010     mipsfpu
2011     mips32r2
2012     mips32r5
2013     mips64r2
2014     mips32r6
2015     mips64r6
2016     mipsdsp
2017     mipsdspr2
2018     msa
2019     msa2
2020 "
2021
2022 ARCH_EXT_LIST_LOONGSON="
2023     loongson2
2024     loongson3
2025     mmi
2026 "
2027
2028 ARCH_EXT_LIST_X86_SIMD="
2029     aesni
2030     amd3dnow
2031     amd3dnowext
2032     avx
2033     avx2
2034     avx512
2035     fma3
2036     fma4
2037     mmx
2038     mmxext
2039     sse
2040     sse2
2041     sse3
2042     sse4
2043     sse42
2044     ssse3
2045     xop
2046 "
2047
2048 ARCH_EXT_LIST_PPC="
2049     altivec
2050     dcbzl
2051     ldbrx
2052     power8
2053     ppc4xx
2054     vsx
2055 "
2056
2057 ARCH_EXT_LIST_X86="
2058     $ARCH_EXT_LIST_X86_SIMD
2059     cpunop
2060     i686
2061 "
2062
2063 ARCH_EXT_LIST="
2064     $ARCH_EXT_LIST_ARM
2065     $ARCH_EXT_LIST_PPC
2066     $ARCH_EXT_LIST_X86
2067     $ARCH_EXT_LIST_MIPS
2068     $ARCH_EXT_LIST_LOONGSON
2069 "
2070
2071 ARCH_FEATURES="
2072     aligned_stack
2073     fast_64bit
2074     fast_clz
2075     fast_cmov
2076     local_aligned
2077     simd_align_16
2078     simd_align_32
2079     simd_align_64
2080 "
2081
2082 BUILTIN_LIST="
2083     atomic_cas_ptr
2084     machine_rw_barrier
2085     MemoryBarrier
2086     mm_empty
2087     rdtsc
2088     sem_timedwait
2089     sync_val_compare_and_swap
2090 "
2091 HAVE_LIST_CMDLINE="
2092     inline_asm
2093     symver
2094     x86asm
2095 "
2096
2097 HAVE_LIST_PUB="
2098     bigendian
2099     fast_unaligned
2100 "
2101
2102 HEADERS_LIST="
2103     arpa_inet_h
2104     asm_types_h
2105     cdio_paranoia_h
2106     cdio_paranoia_paranoia_h
2107     cuda_h
2108     dispatch_dispatch_h
2109     dev_bktr_ioctl_bt848_h
2110     dev_bktr_ioctl_meteor_h
2111     dev_ic_bt8xx_h
2112     dev_video_bktr_ioctl_bt848_h
2113     dev_video_meteor_ioctl_meteor_h
2114     direct_h
2115     dirent_h
2116     dxgidebug_h
2117     dxva_h
2118     ES2_gl_h
2119     gsm_h
2120     io_h
2121     linux_perf_event_h
2122     machine_ioctl_bt848_h
2123     machine_ioctl_meteor_h
2124     malloc_h
2125     opencv2_core_core_c_h
2126     OpenGL_gl3_h
2127     poll_h
2128     sys_param_h
2129     sys_resource_h
2130     sys_select_h
2131     sys_soundcard_h
2132     sys_time_h
2133     sys_un_h
2134     sys_videoio_h
2135     termios_h
2136     udplite_h
2137     unistd_h
2138     valgrind_valgrind_h
2139     windows_h
2140     winsock2_h
2141 "
2142
2143 INTRINSICS_LIST="
2144     intrinsics_neon
2145 "
2146
2147 COMPLEX_FUNCS="
2148     cabs
2149     cexp
2150 "
2151
2152 MATH_FUNCS="
2153     atanf
2154     atan2f
2155     cbrt
2156     cbrtf
2157     copysign
2158     cosf
2159     erf
2160     exp2
2161     exp2f
2162     expf
2163     hypot
2164     isfinite
2165     isinf
2166     isnan
2167     ldexpf
2168     llrint
2169     llrintf
2170     log2
2171     log2f
2172     log10f
2173     lrint
2174     lrintf
2175     powf
2176     rint
2177     round
2178     roundf
2179     sinf
2180     trunc
2181     truncf
2182 "
2183
2184 SYSTEM_FEATURES="
2185     dos_paths
2186     libc_msvcrt
2187     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2188     section_data_rel_ro
2189     threads
2190     uwp
2191     winrt
2192 "
2193
2194 SYSTEM_FUNCS="
2195     access
2196     aligned_malloc
2197     arc4random
2198     clock_gettime
2199     closesocket
2200     CommandLineToArgvW
2201     fcntl
2202     getaddrinfo
2203     gethrtime
2204     getopt
2205     GetModuleHandle
2206     GetProcessAffinityMask
2207     GetProcessMemoryInfo
2208     GetProcessTimes
2209     getrusage
2210     GetStdHandle
2211     GetSystemTimeAsFileTime
2212     gettimeofday
2213     glob
2214     glXGetProcAddress
2215     gmtime_r
2216     inet_aton
2217     isatty
2218     kbhit
2219     localtime_r
2220     lstat
2221     lzo1x_999_compress
2222     mach_absolute_time
2223     MapViewOfFile
2224     memalign
2225     mkstemp
2226     mmap
2227     mprotect
2228     nanosleep
2229     PeekNamedPipe
2230     posix_memalign
2231     pthread_cancel
2232     sched_getaffinity
2233     SecItemImport
2234     SetConsoleTextAttribute
2235     SetConsoleCtrlHandler
2236     SetDllDirectory
2237     setmode
2238     setrlimit
2239     Sleep
2240     strerror_r
2241     sysconf
2242     sysctl
2243     usleep
2244     UTGetOSTypeFromString
2245     VirtualAlloc
2246     wglGetProcAddress
2247 "
2248
2249 SYSTEM_LIBRARIES="
2250     bcrypt
2251     vaapi_drm
2252     vaapi_x11
2253     vdpau_x11
2254 "
2255
2256 TOOLCHAIN_FEATURES="
2257     as_arch_directive
2258     as_dn_directive
2259     as_fpu_directive
2260     as_func
2261     as_object_arch
2262     asm_mod_q
2263     blocks_extension
2264     ebp_available
2265     ebx_available
2266     gnu_as
2267     gnu_windres
2268     ibm_asm
2269     inline_asm_direct_symbol_refs
2270     inline_asm_labels
2271     inline_asm_nonlocal_labels
2272     pragma_deprecated
2273     rsync_contimeout
2274     symver_asm_label
2275     symver_gnu_asm
2276     vfp_args
2277     xform_asm
2278     xmm_clobbers
2279 "
2280
2281 TYPES_LIST="
2282     kCMVideoCodecType_HEVC
2283     kCVPixelFormatType_420YpCbCr10BiPlanarVideoRange
2284     kCVImageBufferTransferFunction_SMPTE_ST_2084_PQ
2285     kCVImageBufferTransferFunction_ITU_R_2100_HLG
2286     kCVImageBufferTransferFunction_Linear
2287     socklen_t
2288     struct_addrinfo
2289     struct_group_source_req
2290     struct_ip_mreq_source
2291     struct_ipv6_mreq
2292     struct_msghdr_msg_flags
2293     struct_pollfd
2294     struct_rusage_ru_maxrss
2295     struct_sctp_event_subscribe
2296     struct_sockaddr_in6
2297     struct_sockaddr_sa_len
2298     struct_sockaddr_storage
2299     struct_stat_st_mtim_tv_nsec
2300     struct_v4l2_frmivalenum_discrete
2301 "
2302
2303 HAVE_LIST="
2304     $ARCH_EXT_LIST
2305     $(add_suffix _external $ARCH_EXT_LIST)
2306     $(add_suffix _inline   $ARCH_EXT_LIST)
2307     $ARCH_FEATURES
2308     $BUILTIN_LIST
2309     $COMPLEX_FUNCS
2310     $HAVE_LIST_CMDLINE
2311     $HAVE_LIST_PUB
2312     $HEADERS_LIST
2313     $INTRINSICS_LIST
2314     $MATH_FUNCS
2315     $SYSTEM_FEATURES
2316     $SYSTEM_FUNCS
2317     $SYSTEM_LIBRARIES
2318     $THREADS_LIST
2319     $TOOLCHAIN_FEATURES
2320     $TYPES_LIST
2321     makeinfo
2322     makeinfo_html
2323     opencl_d3d11
2324     opencl_drm_arm
2325     opencl_drm_beignet
2326     opencl_dxva2
2327     opencl_vaapi_beignet
2328     opencl_vaapi_intel_media
2329     perl
2330     pod2man
2331     texi2html
2332 "
2333
2334 # options emitted with CONFIG_ prefix but not available on the command line
2335 CONFIG_EXTRA="
2336     aandcttables
2337     ac3dsp
2338     adts_header
2339     audio_frame_queue
2340     audiodsp
2341     blockdsp
2342     bswapdsp
2343     cabac
2344     cbs
2345     cbs_av1
2346     cbs_h264
2347     cbs_h265
2348     cbs_jpeg
2349     cbs_mpeg2
2350     cbs_vp9
2351     dirac_parse
2352     dnn
2353     dvprofile
2354     exif
2355     faandct
2356     faanidct
2357     fdctdsp
2358     flacdsp
2359     fmtconvert
2360     frame_thread_encoder
2361     g722dsp
2362     golomb
2363     gplv3
2364     h263dsp
2365     h264chroma
2366     h264dsp
2367     h264parse
2368     h264pred
2369     h264qpel
2370     hevcparse
2371     hpeldsp
2372     huffman
2373     huffyuvdsp
2374     huffyuvencdsp
2375     idctdsp
2376     iirfilter
2377     mdct15
2378     intrax8
2379     iso_media
2380     ividsp
2381     jpegtables
2382     lgplv3
2383     libx262
2384     llauddsp
2385     llviddsp
2386     llvidencdsp
2387     lpc
2388     lzf
2389     me_cmp
2390     mpeg_er
2391     mpegaudio
2392     mpegaudiodsp
2393     mpegaudioheader
2394     mpegvideo
2395     mpegvideoenc
2396     mss34dsp
2397     pixblockdsp
2398     qpeldsp
2399     qsv
2400     qsvdec
2401     qsvenc
2402     qsvvpp
2403     rangecoder
2404     riffdec
2405     riffenc
2406     rtpdec
2407     rtpenc_chain
2408     rv34dsp
2409     scene_sad
2410     sinewin
2411     snappy
2412     srtp
2413     startcode
2414     texturedsp
2415     texturedspenc
2416     tpeldsp
2417     vaapi_1
2418     vaapi_encode
2419     vc1dsp
2420     videodsp
2421     vp3dsp
2422     vp56dsp
2423     vp8dsp
2424     wma_freqs
2425     wmv2dsp
2426 "
2427
2428 CMDLINE_SELECT="
2429     $ARCH_EXT_LIST
2430     $CONFIG_LIST
2431     $HAVE_LIST_CMDLINE
2432     $THREADS_LIST
2433     asm
2434     cross_compile
2435     debug
2436     extra_warnings
2437     logging
2438     lto
2439     optimizations
2440     rpath
2441     stripping
2442 "
2443
2444 PATHS_LIST="
2445     bindir
2446     datadir
2447     docdir
2448     incdir
2449     libdir
2450     mandir
2451     pkgconfigdir
2452     prefix
2453     shlibdir
2454     install_name_dir
2455 "
2456
2457 CMDLINE_SET="
2458     $PATHS_LIST
2459     ar
2460     arch
2461     as
2462     assert_level
2463     build_suffix
2464     cc
2465     objcc
2466     cpu
2467     cross_prefix
2468     custom_allocator
2469     cxx
2470     dep_cc
2471     doxygen
2472     env
2473     extra_version
2474     gas
2475     host_cc
2476     host_cflags
2477     host_extralibs
2478     host_ld
2479     host_ldflags
2480     host_os
2481     ignore_tests
2482     install
2483     ld
2484     ln_s
2485     logfile
2486     malloc_prefix
2487     nm
2488     optflags
2489     nvcc
2490     nvccflags
2491     pkg_config
2492     pkg_config_flags
2493     progs_suffix
2494     random_seed
2495     ranlib
2496     samples
2497     strip
2498     sws_max_filter_size
2499     sysinclude
2500     sysroot
2501     target_exec
2502     target_os
2503     target_path
2504     target_samples
2505     tempprefix
2506     toolchain
2507     valgrind
2508     windres
2509     x86asmexe
2510 "
2511
2512 CMDLINE_APPEND="
2513     extra_cflags
2514     extra_cxxflags
2515     extra_objcflags
2516     host_cppflags
2517 "
2518
2519 # code dependency declarations
2520
2521 # architecture extensions
2522
2523 armv5te_deps="arm"
2524 armv6_deps="arm"
2525 armv6t2_deps="arm"
2526 armv8_deps="aarch64"
2527 neon_deps_any="aarch64 arm"
2528 intrinsics_neon_deps="neon"
2529 vfp_deps_any="aarch64 arm"
2530 vfpv3_deps="vfp"
2531 setend_deps="arm"
2532
2533 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2534
2535 altivec_deps="ppc"
2536 dcbzl_deps="ppc"
2537 ldbrx_deps="ppc"
2538 ppc4xx_deps="ppc"
2539 vsx_deps="altivec"
2540 power8_deps="vsx"
2541
2542 loongson2_deps="mips"
2543 loongson3_deps="mips"
2544 mips32r2_deps="mips"
2545 mips32r5_deps="mips"
2546 mips32r6_deps="mips"
2547 mips64r2_deps="mips"
2548 mips64r6_deps="mips"
2549 mipsfpu_deps="mips"
2550 mipsdsp_deps="mips"
2551 mipsdspr2_deps="mips"
2552 mmi_deps="mips"
2553 msa_deps="mipsfpu"
2554 msa2_deps="msa"
2555
2556 cpunop_deps="i686"
2557 x86_64_select="i686"
2558 x86_64_suggest="fast_cmov"
2559
2560 amd3dnow_deps="mmx"
2561 amd3dnowext_deps="amd3dnow"
2562 i686_deps="x86"
2563 mmx_deps="x86"
2564 mmxext_deps="mmx"
2565 sse_deps="mmxext"
2566 sse2_deps="sse"
2567 sse3_deps="sse2"
2568 ssse3_deps="sse3"
2569 sse4_deps="ssse3"
2570 sse42_deps="sse4"
2571 aesni_deps="sse42"
2572 avx_deps="sse42"
2573 xop_deps="avx"
2574 fma3_deps="avx"
2575 fma4_deps="avx"
2576 avx2_deps="avx"
2577 avx512_deps="avx2"
2578
2579 mmx_external_deps="x86asm"
2580 mmx_inline_deps="inline_asm x86"
2581 mmx_suggest="mmx_external mmx_inline"
2582
2583 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2584     eval dep=\$${ext}_deps
2585     eval ${ext}_external_deps='"${dep}_external"'
2586     eval ${ext}_inline_deps='"${dep}_inline"'
2587     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2588 done
2589
2590 aligned_stack_if_any="aarch64 ppc x86"
2591 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2592 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2593 fast_unaligned_if_any="aarch64 ppc x86"
2594 simd_align_16_if_any="altivec neon sse"
2595 simd_align_32_if_any="avx"
2596 simd_align_64_if_any="avx512"
2597
2598 # system capabilities
2599 linux_perf_deps="linux_perf_event_h"
2600 symver_if_any="symver_asm_label symver_gnu_asm"
2601 valgrind_backtrace_conflict="optimizations"
2602 valgrind_backtrace_deps="valgrind_valgrind_h"
2603
2604 # threading support
2605 atomics_gcc_if="sync_val_compare_and_swap"
2606 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2607 atomics_win32_if="MemoryBarrier"
2608 atomics_native_if_any="$ATOMICS_LIST"
2609 w32threads_deps="atomics_native"
2610 threads_if_any="$THREADS_LIST"
2611
2612 # subsystems
2613 cbs_av1_select="cbs"
2614 cbs_h264_select="cbs"
2615 cbs_h265_select="cbs"
2616 cbs_jpeg_select="cbs"
2617 cbs_mpeg2_select="cbs"
2618 cbs_vp9_select="cbs"
2619 dct_select="rdft"
2620 dirac_parse_select="golomb"
2621 dnn_suggest="libtensorflow"
2622 error_resilience_select="me_cmp"
2623 faandct_deps="faan"
2624 faandct_select="fdctdsp"
2625 faanidct_deps="faan"
2626 faanidct_select="idctdsp"
2627 h264dsp_select="startcode"
2628 hevcparse_select="golomb"
2629 frame_thread_encoder_deps="encoders threads"
2630 intrax8_select="blockdsp idctdsp"
2631 mdct_select="fft"
2632 mdct15_select="fft"
2633 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2634 mpeg_er_select="error_resilience"
2635 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2636 mpegaudiodsp_select="dct"
2637 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2638 mpegvideoenc_select="aandcttables me_cmp mpegvideo pixblockdsp qpeldsp"
2639 vc1dsp_select="h264chroma qpeldsp startcode"
2640 rdft_select="fft"
2641
2642 # decoders / encoders
2643 aac_decoder_select="adts_header mdct15 mdct sinewin"
2644 aac_fixed_decoder_select="adts_header mdct sinewin"
2645 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2646 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2647 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2648 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2649 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2650 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2651 acelp_kelvin_decoder_select="audiodsp"
2652 adpcm_g722_decoder_select="g722dsp"
2653 adpcm_g722_encoder_select="g722dsp"
2654 aic_decoder_select="golomb idctdsp"
2655 alac_encoder_select="lpc"
2656 als_decoder_select="bswapdsp"
2657 amrnb_decoder_select="lsp"
2658 amrwb_decoder_select="lsp"
2659 amv_decoder_select="sp5x_decoder exif"
2660 amv_encoder_select="jpegtables mpegvideoenc"
2661 ape_decoder_select="bswapdsp llauddsp"
2662 apng_decoder_deps="zlib"
2663 apng_encoder_deps="zlib"
2664 apng_encoder_select="llvidencdsp"
2665 aptx_decoder_select="audio_frame_queue"
2666 aptx_encoder_select="audio_frame_queue"
2667 aptx_hd_decoder_select="audio_frame_queue"
2668 aptx_hd_encoder_select="audio_frame_queue"
2669 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2670 asv1_encoder_select="aandcttables bswapdsp fdctdsp pixblockdsp"
2671 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2672 asv2_encoder_select="aandcttables bswapdsp fdctdsp pixblockdsp"
2673 atrac1_decoder_select="mdct sinewin"
2674 atrac3_decoder_select="mdct"
2675 atrac3al_decoder_select="mdct"
2676 atrac3p_decoder_select="mdct sinewin"
2677 atrac3pal_decoder_select="mdct sinewin"
2678 atrac9_decoder_select="mdct"
2679 avrn_decoder_select="exif jpegtables"
2680 bink_decoder_select="blockdsp hpeldsp"
2681 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2682 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2683 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2684 clearvideo_decoder_select="idctdsp"
2685 cllc_decoder_select="bswapdsp"
2686 comfortnoise_encoder_select="lpc"
2687 cook_decoder_select="audiodsp mdct sinewin"
2688 cscd_decoder_select="lzo"
2689 cscd_decoder_suggest="zlib"
2690 dca_decoder_select="mdct"
2691 dca_encoder_select="mdct"
2692 dds_decoder_select="texturedsp"
2693 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2694 dnxhd_decoder_select="blockdsp idctdsp"
2695 dnxhd_encoder_select="blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2696 dolby_e_decoder_select="mdct"
2697 dvvideo_decoder_select="dvprofile idctdsp"
2698 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2699 dxa_decoder_deps="zlib"
2700 dxv_decoder_select="lzf texturedsp"
2701 eac3_decoder_select="ac3_decoder"
2702 eac3_encoder_select="ac3_encoder"
2703 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2704 eatgq_decoder_select="aandcttables"
2705 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2706 exr_decoder_deps="zlib"
2707 ffv1_decoder_select="rangecoder"
2708 ffv1_encoder_select="rangecoder"
2709 ffvhuff_decoder_select="huffyuv_decoder"
2710 ffvhuff_encoder_select="huffyuv_encoder"
2711 fic_decoder_select="golomb"
2712 flac_decoder_select="flacdsp"
2713 flac_encoder_select="bswapdsp flacdsp lpc"
2714 flashsv2_decoder_deps="zlib"
2715 flashsv2_encoder_deps="zlib"
2716 flashsv_decoder_deps="zlib"
2717 flashsv_encoder_deps="zlib"
2718 flv_decoder_select="h263_decoder"
2719 flv_encoder_select="h263_encoder"
2720 fourxm_decoder_select="blockdsp bswapdsp"
2721 fraps_decoder_select="bswapdsp huffman"
2722 g2m_decoder_deps="zlib"
2723 g2m_decoder_select="blockdsp idctdsp jpegtables"
2724 g729_decoder_select="audiodsp"
2725 h261_decoder_select="mpegvideo"
2726 h261_encoder_select="mpegvideoenc"
2727 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2728 h263_encoder_select="h263dsp mpegvideoenc"
2729 h263i_decoder_select="h263_decoder"
2730 h263p_decoder_select="h263_decoder"
2731 h263p_encoder_select="h263_encoder"
2732 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2733 h264_decoder_suggest="error_resilience"
2734 hap_decoder_select="snappy texturedsp"
2735 hap_encoder_deps="libsnappy"
2736 hap_encoder_select="texturedspenc"
2737 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2738 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2739 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2740 hymt_decoder_select="huffyuv_decoder"
2741 iac_decoder_select="imc_decoder"
2742 imc_decoder_select="bswapdsp fft mdct sinewin"
2743 imm4_decoder_select="bswapdsp"
2744 imm5_decoder_select="h264_decoder hevc_decoder"
2745 indeo3_decoder_select="hpeldsp"
2746 indeo4_decoder_select="ividsp"
2747 indeo5_decoder_select="ividsp"
2748 interplay_video_decoder_select="hpeldsp"
2749 jpegls_decoder_select="mjpeg_decoder"
2750 jv_decoder_select="blockdsp"
2751 lagarith_decoder_select="llviddsp"
2752 ljpeg_encoder_select="idctdsp jpegtables mpegvideoenc"
2753 lscr_decoder_deps="zlib"
2754 magicyuv_decoder_select="llviddsp"
2755 magicyuv_encoder_select="llvidencdsp"
2756 mdec_decoder_select="blockdsp bswapdsp idctdsp mpegvideo"
2757 metasound_decoder_select="lsp mdct sinewin"
2758 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2759 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2760 mjpeg_encoder_select="jpegtables mpegvideoenc"
2761 mjpegb_decoder_select="mjpeg_decoder"
2762 mlp_decoder_select="mlp_parser"
2763 mlp_encoder_select="lpc audio_frame_queue"
2764 motionpixels_decoder_select="bswapdsp"
2765 mp1_decoder_select="mpegaudio"
2766 mp1float_decoder_select="mpegaudio"
2767 mp2_decoder_select="mpegaudio"
2768 mp2float_decoder_select="mpegaudio"
2769 mp3_decoder_select="mpegaudio"
2770 mp3adu_decoder_select="mpegaudio"
2771 mp3adufloat_decoder_select="mpegaudio"
2772 mp3float_decoder_select="mpegaudio"
2773 mp3on4_decoder_select="mpegaudio"
2774 mp3on4float_decoder_select="mpegaudio"
2775 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2776 mpc8_decoder_select="mpegaudiodsp"
2777 mpegvideo_decoder_select="mpegvideo"
2778 mpeg1video_decoder_select="mpegvideo"
2779 mpeg1video_encoder_select="mpegvideoenc h263dsp"
2780 mpeg2video_decoder_select="mpegvideo"
2781 mpeg2video_encoder_select="mpegvideoenc h263dsp"
2782 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2783 mpeg4_encoder_select="h263_encoder"
2784 msa1_decoder_select="mss34dsp"
2785 mscc_decoder_deps="zlib"
2786 msmpeg4v1_decoder_select="h263_decoder"
2787 msmpeg4v2_decoder_select="h263_decoder"
2788 msmpeg4v2_encoder_select="h263_encoder"
2789 msmpeg4v3_decoder_select="h263_decoder"
2790 msmpeg4v3_encoder_select="h263_encoder"
2791 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2792 mts2_decoder_select="mss34dsp"
2793 mv30_decoder_select="aandcttables blockdsp"
2794 mvha_decoder_deps="zlib"
2795 mvha_decoder_select="llviddsp"
2796 mwsc_decoder_deps="zlib"
2797 mxpeg_decoder_select="mjpeg_decoder"
2798 nellymoser_decoder_select="mdct sinewin"
2799 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2800 nuv_decoder_select="idctdsp lzo"
2801 on2avc_decoder_select="mdct"
2802 opus_decoder_deps="swresample"
2803 opus_decoder_select="mdct15"
2804 opus_encoder_select="audio_frame_queue mdct15"
2805 png_decoder_deps="zlib"
2806 png_encoder_deps="zlib"
2807 png_encoder_select="llvidencdsp"
2808 prores_decoder_select="blockdsp idctdsp"
2809 prores_encoder_select="fdctdsp"
2810 qcelp_decoder_select="lsp"
2811 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2812 ra_144_decoder_select="audiodsp"
2813 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2814 ralf_decoder_select="golomb"
2815 rasc_decoder_deps="zlib"
2816 rawvideo_decoder_select="bswapdsp"
2817 rscc_decoder_deps="zlib"
2818 rtjpeg_decoder_select="me_cmp"
2819 rv10_decoder_select="h263_decoder"
2820 rv10_encoder_select="h263_encoder"
2821 rv20_decoder_select="h263_decoder"
2822 rv20_encoder_select="h263_encoder"
2823 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2824 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2825 screenpresso_decoder_deps="zlib"
2826 shorten_decoder_select="bswapdsp"
2827 sipr_decoder_select="lsp"
2828 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2829 snow_encoder_select="dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2830 sonic_decoder_select="golomb rangecoder"
2831 sonic_encoder_select="golomb rangecoder"
2832 sonic_ls_encoder_select="golomb rangecoder"
2833 sp5x_decoder_select="mjpeg_decoder"
2834 speedhq_decoder_select="mpegvideo"
2835 srgc_decoder_deps="zlib"
2836 svq1_decoder_select="hpeldsp"
2837 svq1_encoder_select="hpeldsp me_cmp mpegvideoenc"
2838 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2839 svq3_decoder_suggest="zlib"
2840 tak_decoder_select="audiodsp"
2841 tdsc_decoder_deps="zlib"
2842 tdsc_decoder_select="mjpeg_decoder"
2843 theora_decoder_select="vp3_decoder"
2844 thp_decoder_select="mjpeg_decoder"
2845 tiff_decoder_select="mjpeg_decoder"
2846 tiff_decoder_suggest="zlib lzma"
2847 tiff_encoder_suggest="zlib"
2848 truehd_decoder_select="mlp_parser"
2849 truehd_encoder_select="lpc audio_frame_queue"
2850 truemotion2_decoder_select="bswapdsp"
2851 truespeech_decoder_select="bswapdsp"
2852 tscc_decoder_deps="zlib"
2853 twinvq_decoder_select="mdct lsp sinewin"
2854 txd_decoder_select="texturedsp"
2855 utvideo_decoder_select="bswapdsp llviddsp"
2856 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2857 vble_decoder_select="llviddsp"
2858 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2859 vc1image_decoder_select="vc1_decoder"
2860 vorbis_decoder_select="mdct"
2861 vorbis_encoder_select="audio_frame_queue mdct"
2862 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2863 vp4_decoder_select="vp3_decoder"
2864 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2865 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2866 vp6a_decoder_select="vp6_decoder"
2867 vp6f_decoder_select="vp6_decoder"
2868 vp7_decoder_select="h264pred videodsp vp8dsp"
2869 vp8_decoder_select="h264pred videodsp vp8dsp"
2870 vp9_decoder_select="videodsp vp9_parser vp9_superframe_split_bsf"
2871 wcmv_decoder_deps="zlib"
2872 webp_decoder_select="vp8_decoder exif"
2873 wmalossless_decoder_select="llauddsp"
2874 wmapro_decoder_select="mdct sinewin wma_freqs"
2875 wmav1_decoder_select="mdct sinewin wma_freqs"
2876 wmav1_encoder_select="mdct sinewin wma_freqs"
2877 wmav2_decoder_select="mdct sinewin wma_freqs"
2878 wmav2_encoder_select="mdct sinewin wma_freqs"
2879 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2880 wmv1_decoder_select="h263_decoder"
2881 wmv1_encoder_select="h263_encoder"
2882 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2883 wmv2_encoder_select="h263_encoder wmv2dsp"
2884 wmv3_decoder_select="vc1_decoder"
2885 wmv3image_decoder_select="wmv3_decoder"
2886 xma1_decoder_select="wmapro_decoder"
2887 xma2_decoder_select="wmapro_decoder"
2888 ylc_decoder_select="bswapdsp"
2889 zerocodec_decoder_deps="zlib"
2890 zlib_decoder_deps="zlib"
2891 zlib_encoder_deps="zlib"
2892 zmbv_decoder_deps="zlib"
2893 zmbv_encoder_deps="zlib"
2894
2895 # hardware accelerators
2896 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2897 cuda_deps="ffnvcodec"
2898 cuvid_deps="ffnvcodec"
2899 d3d11va_deps="dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2900 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2901 ffnvcodec_deps_any="libdl LoadLibrary"
2902 nvdec_deps="ffnvcodec"
2903 vaapi_x11_deps="xlib"
2904 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2905 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2906 xvmc_deps="X11_extensions_XvMClib_h"
2907
2908 h263_vaapi_hwaccel_deps="vaapi"
2909 h263_vaapi_hwaccel_select="h263_decoder"
2910 h263_videotoolbox_hwaccel_deps="videotoolbox"
2911 h263_videotoolbox_hwaccel_select="h263_decoder"
2912 h264_d3d11va_hwaccel_deps="d3d11va"
2913 h264_d3d11va_hwaccel_select="h264_decoder"
2914 h264_d3d11va2_hwaccel_deps="d3d11va"
2915 h264_d3d11va2_hwaccel_select="h264_decoder"
2916 h264_dxva2_hwaccel_deps="dxva2"
2917 h264_dxva2_hwaccel_select="h264_decoder"
2918 h264_nvdec_hwaccel_deps="nvdec"
2919 h264_nvdec_hwaccel_select="h264_decoder"
2920 h264_vaapi_hwaccel_deps="vaapi"
2921 h264_vaapi_hwaccel_select="h264_decoder"
2922 h264_vdpau_hwaccel_deps="vdpau"
2923 h264_vdpau_hwaccel_select="h264_decoder"
2924 h264_videotoolbox_hwaccel_deps="videotoolbox"
2925 h264_videotoolbox_hwaccel_select="h264_decoder"
2926 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2927 hevc_d3d11va_hwaccel_select="hevc_decoder"
2928 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2929 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2930 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2931 hevc_dxva2_hwaccel_select="hevc_decoder"
2932 hevc_nvdec_hwaccel_deps="nvdec"
2933 hevc_nvdec_hwaccel_select="hevc_decoder"
2934 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2935 hevc_vaapi_hwaccel_select="hevc_decoder"
2936 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2937 hevc_vdpau_hwaccel_select="hevc_decoder"
2938 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2939 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2940 mjpeg_nvdec_hwaccel_deps="nvdec"
2941 mjpeg_nvdec_hwaccel_select="mjpeg_decoder"
2942 mjpeg_vaapi_hwaccel_deps="vaapi"
2943 mjpeg_vaapi_hwaccel_select="mjpeg_decoder"
2944 mpeg_xvmc_hwaccel_deps="xvmc"
2945 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2946 mpeg1_nvdec_hwaccel_deps="nvdec"
2947 mpeg1_nvdec_hwaccel_select="mpeg1video_decoder"
2948 mpeg1_vdpau_hwaccel_deps="vdpau"
2949 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2950 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2951 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2952 mpeg1_xvmc_hwaccel_deps="xvmc"
2953 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2954 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2955 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2956 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2957 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2958 mpeg2_dxva2_hwaccel_deps="dxva2"
2959 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2960 mpeg2_nvdec_hwaccel_deps="nvdec"
2961 mpeg2_nvdec_hwaccel_select="mpeg2video_decoder"
2962 mpeg2_vaapi_hwaccel_deps="vaapi"
2963 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2964 mpeg2_vdpau_hwaccel_deps="vdpau"
2965 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2966 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2967 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2968 mpeg2_xvmc_hwaccel_deps="xvmc"
2969 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2970 mpeg4_nvdec_hwaccel_deps="nvdec"
2971 mpeg4_nvdec_hwaccel_select="mpeg4_decoder"
2972 mpeg4_vaapi_hwaccel_deps="vaapi"
2973 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2974 mpeg4_vdpau_hwaccel_deps="vdpau"
2975 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2976 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2977 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2978 vc1_d3d11va_hwaccel_deps="d3d11va"
2979 vc1_d3d11va_hwaccel_select="vc1_decoder"
2980 vc1_d3d11va2_hwaccel_deps="d3d11va"
2981 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2982 vc1_dxva2_hwaccel_deps="dxva2"
2983 vc1_dxva2_hwaccel_select="vc1_decoder"
2984 vc1_nvdec_hwaccel_deps="nvdec"
2985 vc1_nvdec_hwaccel_select="vc1_decoder"
2986 vc1_vaapi_hwaccel_deps="vaapi"
2987 vc1_vaapi_hwaccel_select="vc1_decoder"
2988 vc1_vdpau_hwaccel_deps="vdpau"
2989 vc1_vdpau_hwaccel_select="vc1_decoder"
2990 vp8_nvdec_hwaccel_deps="nvdec"
2991 vp8_nvdec_hwaccel_select="vp8_decoder"
2992 vp8_vaapi_hwaccel_deps="vaapi"
2993 vp8_vaapi_hwaccel_select="vp8_decoder"
2994 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2995 vp9_d3d11va_hwaccel_select="vp9_decoder"
2996 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2997 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2998 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2999 vp9_dxva2_hwaccel_select="vp9_decoder"
3000 vp9_nvdec_hwaccel_deps="nvdec"
3001 vp9_nvdec_hwaccel_select="vp9_decoder"
3002 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
3003 vp9_vaapi_hwaccel_select="vp9_decoder"
3004 vp9_vdpau_hwaccel_deps="vdpau VdpPictureInfoVP9"
3005 vp9_vdpau_hwaccel_select="vp9_decoder"
3006 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
3007 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
3008 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
3009 wmv3_nvdec_hwaccel_select="vc1_nvdec_hwaccel"
3010 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
3011 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
3012
3013 # hardware-accelerated codecs
3014 omx_deps="libdl pthreads"
3015 omx_rpi_select="omx"
3016 qsv_deps="libmfx"
3017 qsvdec_select="qsv"
3018 qsvenc_select="qsv"
3019 qsvvpp_select="qsv"
3020 vaapi_encode_deps="vaapi"
3021 v4l2_m2m_deps="linux_videodev2_h sem_timedwait"
3022
3023 hwupload_cuda_filter_deps="ffnvcodec"
3024 scale_npp_filter_deps="ffnvcodec libnpp"
3025 scale_cuda_filter_deps="ffnvcodec"
3026 scale_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3027 thumbnail_cuda_filter_deps="ffnvcodec"
3028 thumbnail_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3029 transpose_npp_filter_deps="ffnvcodec libnpp"
3030 overlay_cuda_filter_deps="ffnvcodec"
3031 overlay_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3032
3033 amf_deps_any="libdl LoadLibrary"
3034 nvenc_deps="ffnvcodec"
3035 nvenc_deps_any="libdl LoadLibrary"
3036 nvenc_encoder_deps="nvenc"
3037
3038 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
3039 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
3040 h264_amf_encoder_deps="amf"
3041 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
3042 h264_cuvid_decoder_deps="cuvid"
3043 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
3044 h264_mediacodec_decoder_deps="mediacodec"
3045 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
3046 h264_mmal_decoder_deps="mmal"
3047 h264_nvenc_encoder_deps="nvenc"
3048 h264_omx_encoder_deps="omx"
3049 h264_qsv_decoder_select="h264_mp4toannexb_bsf qsvdec"
3050 h264_qsv_encoder_select="qsvenc"
3051 h264_rkmpp_decoder_deps="rkmpp"
3052 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
3053 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
3054 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
3055 h264_v4l2m2m_decoder_select="h264_mp4toannexb_bsf"
3056 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
3057 hevc_amf_encoder_deps="amf"
3058 hevc_cuvid_decoder_deps="cuvid"
3059 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
3060 hevc_mediacodec_decoder_deps="mediacodec"
3061 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
3062 hevc_nvenc_encoder_deps="nvenc"
3063 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf qsvdec"
3064 hevc_qsv_encoder_select="hevcparse qsvenc"
3065 hevc_rkmpp_decoder_deps="rkmpp"
3066 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
3067 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
3068 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
3069 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
3070 hevc_v4l2m2m_decoder_select="hevc_mp4toannexb_bsf"
3071 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
3072 mjpeg_cuvid_decoder_deps="cuvid"
3073 mjpeg_qsv_decoder_select="qsvdec"
3074 mjpeg_qsv_encoder_deps="libmfx"
3075 mjpeg_qsv_encoder_select="qsvenc"
3076 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
3077 mjpeg_vaapi_encoder_select="cbs_jpeg jpegtables vaapi_encode"
3078 mpeg1_cuvid_decoder_deps="cuvid"
3079 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
3080 mpeg2_crystalhd_decoder_select="crystalhd"
3081 mpeg2_cuvid_decoder_deps="cuvid"
3082 mpeg2_mmal_decoder_deps="mmal"
3083 mpeg2_mediacodec_decoder_deps="mediacodec"
3084 mpeg2_qsv_decoder_select="qsvdec"
3085 mpeg2_qsv_encoder_select="qsvenc"
3086 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
3087 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
3088 mpeg4_crystalhd_decoder_select="crystalhd"
3089 mpeg4_cuvid_decoder_deps="cuvid"
3090 mpeg4_mediacodec_decoder_deps="mediacodec"
3091 mpeg4_mmal_decoder_deps="mmal"
3092 mpeg4_omx_encoder_deps="omx"
3093 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
3094 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
3095 msmpeg4_crystalhd_decoder_select="crystalhd"
3096 nvenc_h264_encoder_select="h264_nvenc_encoder"
3097 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
3098 vc1_crystalhd_decoder_select="crystalhd"
3099 vc1_cuvid_decoder_deps="cuvid"
3100 vc1_mmal_decoder_deps="mmal"
3101 vc1_qsv_decoder_select="qsvdec"
3102 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
3103 vp8_cuvid_decoder_deps="cuvid"
3104 vp8_mediacodec_decoder_deps="mediacodec"
3105 vp8_qsv_decoder_select="qsvdec"
3106 vp8_rkmpp_decoder_deps="rkmpp"
3107 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
3108 vp8_vaapi_encoder_select="vaapi_encode"
3109 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
3110 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
3111 vp9_cuvid_decoder_deps="cuvid"
3112 vp9_mediacodec_decoder_deps="mediacodec"
3113 vp9_qsv_decoder_select="qsvdec"
3114 vp9_rkmpp_decoder_deps="rkmpp"
3115 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
3116 vp9_vaapi_encoder_select="vaapi_encode"
3117 vp9_qsv_encoder_deps="libmfx MFX_CODEC_VP9"
3118 vp9_qsv_encoder_select="qsvenc"
3119 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
3120 wmv3_crystalhd_decoder_select="crystalhd"
3121
3122 # parsers
3123 aac_parser_select="adts_header"
3124 av1_parser_select="cbs_av1"
3125 h264_parser_select="golomb h264dsp h264parse"
3126 hevc_parser_select="hevcparse"
3127 mpegaudio_parser_select="mpegaudioheader"
3128 mpegvideo_parser_select="mpegvideo"
3129 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
3130 vc1_parser_select="vc1dsp"
3131
3132 # bitstream_filters
3133 aac_adtstoasc_bsf_select="adts_header"
3134 av1_frame_merge_bsf_select="cbs_av1"
3135 av1_frame_split_bsf_select="cbs_av1"
3136 av1_metadata_bsf_select="cbs_av1"
3137 eac3_core_bsf_select="ac3_parser"
3138 filter_units_bsf_select="cbs"
3139 h264_metadata_bsf_deps="const_nan"
3140 h264_metadata_bsf_select="cbs_h264"
3141 h264_redundant_pps_bsf_select="cbs_h264"
3142 hevc_metadata_bsf_select="cbs_h265"
3143 mjpeg2jpeg_bsf_select="jpegtables"
3144 mpeg2_metadata_bsf_select="cbs_mpeg2"
3145 trace_headers_bsf_select="cbs"
3146 vp9_metadata_bsf_select="cbs_vp9"
3147
3148 # external libraries
3149 aac_at_decoder_deps="audiotoolbox"
3150 aac_at_decoder_select="aac_adtstoasc_bsf"
3151 ac3_at_decoder_deps="audiotoolbox"
3152 ac3_at_decoder_select="ac3_parser"
3153 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
3154 alac_at_decoder_deps="audiotoolbox"
3155 amr_nb_at_decoder_deps="audiotoolbox"
3156 avisynth_deps_any="libdl LoadLibrary"
3157 avisynth_demuxer_deps="avisynth"
3158 avisynth_demuxer_select="riffdec"
3159 eac3_at_decoder_deps="audiotoolbox"
3160 eac3_at_decoder_select="ac3_parser"
3161 gsm_ms_at_decoder_deps="audiotoolbox"
3162 ilbc_at_decoder_deps="audiotoolbox"
3163 mp1_at_decoder_deps="audiotoolbox"
3164 mp2_at_decoder_deps="audiotoolbox"
3165 mp3_at_decoder_deps="audiotoolbox"
3166 mp1_at_decoder_select="mpegaudioheader"
3167 mp2_at_decoder_select="mpegaudioheader"
3168 mp3_at_decoder_select="mpegaudioheader"
3169 pcm_alaw_at_decoder_deps="audiotoolbox"
3170 pcm_mulaw_at_decoder_deps="audiotoolbox"
3171 qdmc_decoder_select="fft"
3172 qdmc_at_decoder_deps="audiotoolbox"
3173 qdm2_at_decoder_deps="audiotoolbox"
3174 aac_at_encoder_deps="audiotoolbox"
3175 aac_at_encoder_select="audio_frame_queue"
3176 alac_at_encoder_deps="audiotoolbox"
3177 alac_at_encoder_select="audio_frame_queue"
3178 ilbc_at_encoder_deps="audiotoolbox"
3179 ilbc_at_encoder_select="audio_frame_queue"
3180 pcm_alaw_at_encoder_deps="audiotoolbox"
3181 pcm_alaw_at_encoder_select="audio_frame_queue"
3182 pcm_mulaw_at_encoder_deps="audiotoolbox"
3183 pcm_mulaw_at_encoder_select="audio_frame_queue"
3184 chromaprint_muxer_deps="chromaprint"
3185 h264_videotoolbox_encoder_deps="pthreads"
3186 h264_videotoolbox_encoder_select="videotoolbox_encoder"
3187 hevc_videotoolbox_encoder_deps="pthreads"
3188 hevc_videotoolbox_encoder_select="videotoolbox_encoder"
3189 libaom_av1_decoder_deps="libaom"
3190 libaom_av1_encoder_deps="libaom"
3191 libaom_av1_encoder_select="extract_extradata_bsf"
3192 libaribb24_decoder_deps="libaribb24"
3193 libcelt_decoder_deps="libcelt"
3194 libcodec2_decoder_deps="libcodec2"
3195 libcodec2_encoder_deps="libcodec2"
3196 libdav1d_decoder_deps="libdav1d"
3197 libdavs2_decoder_deps="libdavs2"
3198 libfdk_aac_decoder_deps="libfdk_aac"
3199 libfdk_aac_encoder_deps="libfdk_aac"
3200 libfdk_aac_encoder_select="audio_frame_queue"
3201 libgme_demuxer_deps="libgme"
3202 libgsm_decoder_deps="libgsm"
3203 libgsm_encoder_deps="libgsm"
3204 libgsm_ms_decoder_deps="libgsm"
3205 libgsm_ms_encoder_deps="libgsm"
3206 libilbc_decoder_deps="libilbc"
3207 libilbc_encoder_deps="libilbc"
3208 libkvazaar_encoder_deps="libkvazaar"
3209 libmodplug_demuxer_deps="libmodplug"
3210 libmp3lame_encoder_deps="libmp3lame"
3211 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
3212 libopencore_amrnb_decoder_deps="libopencore_amrnb"
3213 libopencore_amrnb_encoder_deps="libopencore_amrnb"
3214 libopencore_amrnb_encoder_select="audio_frame_queue"
3215 libopencore_amrwb_decoder_deps="libopencore_amrwb"
3216 libopenh264_decoder_deps="libopenh264"
3217 libopenh264_decoder_select="h264_mp4toannexb_bsf"
3218 libopenh264_encoder_deps="libopenh264"
3219 libopenjpeg_decoder_deps="libopenjpeg"
3220 libopenjpeg_encoder_deps="libopenjpeg"
3221 libopenmpt_demuxer_deps="libopenmpt"
3222 libopus_decoder_deps="libopus"
3223 libopus_encoder_deps="libopus"
3224 libopus_encoder_select="audio_frame_queue"
3225 librav1e_encoder_deps="librav1e"
3226 librav1e_encoder_select="extract_extradata_bsf"
3227 librsvg_decoder_deps="librsvg"
3228 libshine_encoder_deps="libshine"
3229 libshine_encoder_select="audio_frame_queue"
3230 libspeex_decoder_deps="libspeex"
3231 libspeex_encoder_deps="libspeex"
3232 libspeex_encoder_select="audio_frame_queue"
3233 libtheora_encoder_deps="libtheora"
3234 libtwolame_encoder_deps="libtwolame"
3235 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
3236 libvorbis_decoder_deps="libvorbis"
3237 libvorbis_encoder_deps="libvorbis libvorbisenc"
3238 libvorbis_encoder_select="audio_frame_queue"
3239 libvpx_vp8_decoder_deps="libvpx"
3240 libvpx_vp8_encoder_deps="libvpx"
3241 libvpx_vp9_decoder_deps="libvpx"
3242 libvpx_vp9_encoder_deps="libvpx"
3243 libwavpack_encoder_deps="libwavpack"
3244 libwavpack_encoder_select="audio_frame_queue"
3245 libwebp_encoder_deps="libwebp"
3246 libwebp_anim_encoder_deps="libwebp"
3247 libx262_encoder_deps="libx262"
3248 libx264_encoder_deps="libx264"
3249 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
3250 libx264rgb_encoder_select="libx264_encoder"
3251 libx265_encoder_deps="libx265"
3252 libxavs_encoder_deps="libxavs"
3253 libxavs2_encoder_deps="libxavs2"
3254 libxvid_encoder_deps="libxvid"
3255 libzvbi_teletext_decoder_deps="libzvbi"
3256 vapoursynth_demuxer_deps="vapoursynth"
3257 videotoolbox_suggest="coreservices"
3258 videotoolbox_deps="corefoundation coremedia corevideo"
3259 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
3260
3261 # demuxers / muxers
3262 ac3_demuxer_select="ac3_parser"
3263 act_demuxer_select="riffdec"
3264 aiff_muxer_select="iso_media"
3265 asf_demuxer_select="riffdec"
3266 asf_o_demuxer_select="riffdec"
3267 asf_muxer_select="riffenc"
3268 asf_stream_muxer_select="asf_muxer"
3269 av1_demuxer_select="av1_frame_merge_bsf av1_parser"
3270 avi_demuxer_select="iso_media riffdec exif"
3271 avi_muxer_select="riffenc"
3272 caf_demuxer_select="iso_media riffdec"
3273 caf_muxer_select="iso_media"
3274 dash_muxer_select="mp4_muxer"
3275 dash_demuxer_deps="libxml2"
3276 dirac_demuxer_select="dirac_parser"
3277 dts_demuxer_select="dca_parser"
3278 dtshd_demuxer_select="dca_parser"
3279 dv_demuxer_select="dvprofile"
3280 dv_muxer_select="dvprofile"
3281 dxa_demuxer_select="riffdec"
3282 eac3_demuxer_select="ac3_parser"
3283 f4v_muxer_select="mov_muxer"
3284 fifo_muxer_deps="threads"
3285 flac_demuxer_select="flac_parser"
3286 hds_muxer_select="flv_muxer"
3287 hls_muxer_select="mpegts_muxer"
3288 hls_muxer_suggest="gcrypt openssl"
3289 image2_alias_pix_demuxer_select="image2_demuxer"
3290 image2_brender_pix_demuxer_select="image2_demuxer"
3291 ipod_muxer_select="mov_muxer"
3292 ismv_muxer_select="mov_muxer"
3293 ivf_muxer_select="av1_metadata_bsf vp9_superframe_bsf"
3294 matroska_audio_muxer_select="matroska_muxer"
3295 matroska_demuxer_select="iso_media riffdec"
3296 matroska_demuxer_suggest="bzlib lzo zlib"
3297 matroska_muxer_select="iso_media riffenc"
3298 mlp_demuxer_select="mlp_parser"
3299 mmf_muxer_select="riffenc"
3300 mov_demuxer_select="iso_media riffdec"
3301 mov_demuxer_suggest="zlib"
3302 mov_muxer_select="iso_media riffenc rtpenc_chain"
3303 mp3_demuxer_select="mpegaudio_parser"
3304 mp3_muxer_select="mpegaudioheader"
3305 mp4_muxer_select="mov_muxer"
3306 mpegts_demuxer_select="iso_media"
3307 mpegts_muxer_select="adts_muxer latm_muxer"
3308 mpegtsraw_demuxer_select="mpegts_demuxer"
3309 mxf_muxer_select="golomb"
3310 mxf_d10_muxer_select="mxf_muxer"
3311 mxf_opatom_muxer_select="mxf_muxer"
3312 nut_muxer_select="riffenc"
3313 nuv_demuxer_select="riffdec"
3314 oga_muxer_select="ogg_muxer"
3315 ogg_demuxer_select="dirac_parse"
3316 ogv_muxer_select="ogg_muxer"
3317 opus_muxer_select="ogg_muxer"
3318 psp_muxer_select="mov_muxer"
3319 rtp_demuxer_select="sdp_demuxer"
3320 rtp_muxer_select="golomb jpegtables"
3321 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3322 rtsp_demuxer_select="http_protocol rtpdec"
3323 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3324 sap_demuxer_select="sdp_demuxer"
3325 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3326 sdp_demuxer_select="rtpdec"
3327 smoothstreaming_muxer_select="ismv_muxer"
3328 spdif_demuxer_select="adts_header"
3329 spdif_muxer_select="adts_header"
3330 spx_muxer_select="ogg_muxer"
3331 swf_demuxer_suggest="zlib"
3332 tak_demuxer_select="tak_parser"
3333 truehd_demuxer_select="mlp_parser"
3334 tg2_muxer_select="mov_muxer"
3335 tgp_muxer_select="mov_muxer"
3336 vobsub_demuxer_select="mpegps_demuxer"
3337 w64_demuxer_select="wav_demuxer"
3338 w64_muxer_select="wav_muxer"
3339 wav_demuxer_select="riffdec"
3340 wav_muxer_select="riffenc"
3341 webm_chunk_muxer_select="webm_muxer"
3342 webm_muxer_select="iso_media riffenc"
3343 webm_dash_manifest_demuxer_select="matroska_demuxer"
3344 wtv_demuxer_select="mpegts_demuxer riffdec"
3345 wtv_muxer_select="mpegts_muxer riffenc"
3346 xmv_demuxer_select="riffdec"
3347 xwma_demuxer_select="riffdec"
3348
3349 # indevs / outdevs
3350 android_camera_indev_deps="android camera2ndk mediandk pthreads"
3351 android_camera_indev_extralibs="-landroid -lcamera2ndk -lmediandk"
3352 alsa_indev_deps="alsa"
3353 alsa_outdev_deps="alsa"
3354 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3355 avfoundation_indev_suggest="coregraphics applicationservices"
3356 avfoundation_indev_extralibs="-framework Foundation"
3357 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3358 caca_outdev_deps="libcaca"
3359 decklink_deps_any="libdl LoadLibrary"
3360 decklink_indev_deps="decklink threads"
3361 decklink_indev_extralibs="-lstdc++"
3362 decklink_outdev_deps="decklink threads"
3363 decklink_outdev_suggest="libklvanc"
3364 decklink_outdev_extralibs="-lstdc++"
3365 dshow_indev_deps="IBaseFilter"
3366 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3367 fbdev_indev_deps="linux_fb_h"
3368 fbdev_outdev_deps="linux_fb_h"
3369 gdigrab_indev_deps="CreateDIBSection"
3370 gdigrab_indev_extralibs="-lgdi32"
3371 gdigrab_indev_select="bmp_decoder"
3372 iec61883_indev_deps="libiec61883"
3373 jack_indev_deps="libjack"
3374 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3375 kmsgrab_indev_deps="libdrm"
3376 lavfi_indev_deps="avfilter"
3377 libcdio_indev_deps="libcdio"
3378 libdc1394_indev_deps="libdc1394"
3379 openal_indev_deps="openal"
3380 opengl_outdev_deps="opengl"
3381 opengl_outdev_suggest="sdl2"
3382 oss_indev_deps_any="sys_soundcard_h"
3383 oss_outdev_deps_any="sys_soundcard_h"
3384 pulse_indev_deps="libpulse"
3385 pulse_outdev_deps="libpulse"
3386 sdl2_outdev_deps="sdl2"
3387 sndio_indev_deps="sndio"
3388 sndio_outdev_deps="sndio"
3389 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3390 v4l2_indev_suggest="libv4l2"
3391 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3392 v4l2_outdev_suggest="libv4l2"
3393 vfwcap_indev_deps="vfw32 vfwcap_defines"
3394 xcbgrab_indev_deps="libxcb"
3395 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3396 xv_outdev_deps="xlib"
3397
3398 # protocols
3399 async_protocol_deps="threads"
3400 bluray_protocol_deps="libbluray"
3401 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3402 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl mbedtls"
3403 ffrtmpcrypt_protocol_select="tcp_protocol"
3404 ffrtmphttp_protocol_conflict="librtmp_protocol"
3405 ffrtmphttp_protocol_select="http_protocol"
3406 ftp_protocol_select="tcp_protocol"
3407 gopher_protocol_select="network"
3408 http_protocol_select="tcp_protocol"
3409 http_protocol_suggest="zlib"
3410 httpproxy_protocol_select="tcp_protocol"
3411 httpproxy_protocol_suggest="zlib"
3412 https_protocol_select="tls_protocol"
3413 https_protocol_suggest="zlib"
3414 icecast_protocol_select="http_protocol"
3415 mmsh_protocol_select="http_protocol"
3416 mmst_protocol_select="network"
3417 rtmp_protocol_conflict="librtmp_protocol"
3418 rtmp_protocol_select="tcp_protocol"
3419 rtmp_protocol_suggest="zlib"
3420 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3421 rtmpe_protocol_suggest="zlib"
3422 rtmps_protocol_conflict="librtmp_protocol"
3423 rtmps_protocol_select="tls_protocol"
3424 rtmps_protocol_suggest="zlib"
3425 rtmpt_protocol_select="ffrtmphttp_protocol"
3426 rtmpt_protocol_suggest="zlib"
3427 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3428 rtmpte_protocol_suggest="zlib"
3429 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3430 rtmpts_protocol_suggest="zlib"
3431 rtp_protocol_select="udp_protocol"
3432 schannel_conflict="openssl gnutls libtls mbedtls"
3433 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3434 sctp_protocol_select="network"
3435 securetransport_conflict="openssl gnutls libtls mbedtls"
3436 srtp_protocol_select="rtp_protocol srtp"
3437 tcp_protocol_select="network"
3438 tls_protocol_deps_any="gnutls openssl schannel securetransport libtls mbedtls"
3439 tls_protocol_select="tcp_protocol"
3440 udp_protocol_select="network"
3441 udplite_protocol_select="network"
3442 unix_protocol_deps="sys_un_h"
3443 unix_protocol_select="network"
3444
3445 # external library protocols
3446 libamqp_protocol_deps="librabbitmq"
3447 libamqp_protocol_select="network"
3448 librtmp_protocol_deps="librtmp"
3449 librtmpe_protocol_deps="librtmp"
3450 librtmps_protocol_deps="librtmp"
3451 librtmpt_protocol_deps="librtmp"
3452 librtmpte_protocol_deps="librtmp"
3453 libsmbclient_protocol_deps="libsmbclient gplv3"
3454 libsrt_protocol_deps="libsrt"
3455 libsrt_protocol_select="network"
3456 libssh_protocol_deps="libssh"
3457 libtls_conflict="openssl gnutls mbedtls"
3458 libzmq_protocol_deps="libzmq"
3459 libzmq_protocol_select="network"
3460
3461 # filters
3462 afftdn_filter_deps="avcodec"
3463 afftdn_filter_select="fft"
3464 afftfilt_filter_deps="avcodec"
3465 afftfilt_filter_select="fft"
3466 afir_filter_deps="avcodec"
3467 afir_filter_select="rdft"
3468 amovie_filter_deps="avcodec avformat"
3469 aresample_filter_deps="swresample"
3470 asr_filter_deps="pocketsphinx"
3471 ass_filter_deps="libass"
3472 atempo_filter_deps="avcodec"
3473 atempo_filter_select="rdft"
3474 avgblur_opencl_filter_deps="opencl"
3475 avgblur_vulkan_filter_deps="vulkan libglslang"
3476 azmq_filter_deps="libzmq"
3477 blackframe_filter_deps="gpl"
3478 bm3d_filter_deps="avcodec"
3479 bm3d_filter_select="dct"
3480 boxblur_filter_deps="gpl"
3481 boxblur_opencl_filter_deps="opencl gpl"
3482 bs2b_filter_deps="libbs2b"
3483 chromaber_vulkan_filter_deps="vulkan libglslang"
3484 colorkey_opencl_filter_deps="opencl"
3485 colormatrix_filter_deps="gpl"
3486 convolution_opencl_filter_deps="opencl"
3487 convolve_filter_deps="avcodec"
3488 convolve_filter_select="fft"
3489 coreimage_filter_deps="coreimage appkit"
3490 coreimage_filter_extralibs="-framework OpenGL"
3491 coreimagesrc_filter_deps="coreimage appkit"
3492 coreimagesrc_filter_extralibs="-framework OpenGL"
3493 cover_rect_filter_deps="avcodec avformat gpl"
3494 cropdetect_filter_deps="gpl"
3495 deconvolve_filter_deps="avcodec"
3496 deconvolve_filter_select="fft"
3497 deinterlace_qsv_filter_deps="libmfx"
3498 deinterlace_vaapi_filter_deps="vaapi"
3499 delogo_filter_deps="gpl"
3500 denoise_vaapi_filter_deps="vaapi"
3501 derain_filter_select="dnn"
3502 deshake_filter_select="pixelutils"
3503 deshake_opencl_filter_deps="opencl"
3504 dilation_opencl_filter_deps="opencl"
3505 dnn_processing_filter_deps="swscale"
3506 dnn_processing_filter_select="dnn"
3507 drawtext_filter_deps="libfreetype"
3508 drawtext_filter_suggest="libfontconfig libfribidi"
3509 elbg_filter_deps="avcodec"
3510 eq_filter_deps="gpl"
3511 erosion_opencl_filter_deps="opencl"
3512 fftfilt_filter_deps="avcodec"
3513 fftfilt_filter_select="rdft"
3514 fftdnoiz_filter_deps="avcodec"
3515 fftdnoiz_filter_select="fft"
3516 find_rect_filter_deps="avcodec avformat gpl"
3517 firequalizer_filter_deps="avcodec"
3518 firequalizer_filter_select="rdft"
3519 flite_filter_deps="libflite"
3520 framerate_filter_select="scene_sad"
3521 freezedetect_filter_select="scene_sad"
3522 frei0r_filter_deps="frei0r libdl"
3523 frei0r_src_filter_deps="frei0r libdl"
3524 fspp_filter_deps="gpl"
3525 headphone_filter_select="fft"
3526 histeq_filter_deps="gpl"
3527 hqdn3d_filter_deps="gpl"
3528 interlace_filter_deps="gpl"
3529 kerndeint_filter_deps="gpl"
3530 ladspa_filter_deps="ladspa libdl"
3531 lensfun_filter_deps="liblensfun version3"
3532 lv2_filter_deps="lv2"
3533 mcdeint_filter_deps="avcodec gpl"
3534 movie_filter_deps="avcodec avformat"
3535 mpdecimate_filter_deps="gpl"
3536 mpdecimate_filter_select="pixelutils"
3537 minterpolate_filter_select="scene_sad"
3538 mptestsrc_filter_deps="gpl"
3539 negate_filter_deps="lut_filter"
3540 nlmeans_opencl_filter_deps="opencl"
3541 nnedi_filter_deps="gpl"
3542 ocr_filter_deps="libtesseract"
3543 ocv_filter_deps="libopencv"
3544 openclsrc_filter_deps="opencl"
3545 overlay_opencl_filter_deps="opencl"
3546 overlay_qsv_filter_deps="libmfx"
3547 overlay_qsv_filter_select="qsvvpp"
3548 overlay_vulkan_filter_deps="vulkan libglslang"
3549 owdenoise_filter_deps="gpl"
3550 pad_opencl_filter_deps="opencl"
3551 pan_filter_deps="swresample"
3552 perspective_filter_deps="gpl"
3553 phase_filter_deps="gpl"
3554 pp7_filter_deps="gpl"
3555 pp_filter_deps="gpl postproc"
3556 prewitt_opencl_filter_deps="opencl"
3557 procamp_vaapi_filter_deps="vaapi"
3558 program_opencl_filter_deps="opencl"
3559 pullup_filter_deps="gpl"
3560 removelogo_filter_deps="avcodec avformat swscale"
3561 repeatfields_filter_deps="gpl"
3562 resample_filter_deps="avresample"
3563 roberts_opencl_filter_deps="opencl"
3564 rubberband_filter_deps="librubberband"
3565 sab_filter_deps="gpl swscale"
3566 scale2ref_filter_deps="swscale"
3567 scale_filter_deps="swscale"
3568 scale_qsv_filter_deps="libmfx"
3569 select_filter_select="scene_sad"
3570 sharpness_vaapi_filter_deps="vaapi"
3571 showcqt_filter_deps="avcodec avformat swscale"
3572 showcqt_filter_suggest="libfontconfig libfreetype"
3573 showcqt_filter_select="fft"
3574 showfreqs_filter_deps="avcodec"
3575 showfreqs_filter_select="fft"
3576 showspatial_filter_select="fft"
3577 showspectrum_filter_deps="avcodec"
3578 showspectrum_filter_select="fft"
3579 showspectrumpic_filter_deps="avcodec"
3580 showspectrumpic_filter_select="fft"
3581 signature_filter_deps="gpl avcodec avformat"
3582 sinc_filter_select="rdft"
3583 smartblur_filter_deps="gpl swscale"
3584 sobel_opencl_filter_deps="opencl"
3585 sofalizer_filter_deps="libmysofa avcodec"
3586 sofalizer_filter_select="fft"
3587 spectrumsynth_filter_deps="avcodec"
3588 spectrumsynth_filter_select="fft"
3589 spp_filter_deps="gpl avcodec"
3590 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3591 sr_filter_deps="avformat swscale"
3592 sr_filter_select="dnn"
3593 stereo3d_filter_deps="gpl"
3594 subtitles_filter_deps="avformat avcodec libass"
3595 super2xsai_filter_deps="gpl"
3596 pixfmts_super2xsai_test_deps="super2xsai_filter"
3597 superequalizer_filter_select="rdft"
3598 surround_filter_select="rdft"
3599 tinterlace_filter_deps="gpl"
3600 tinterlace_merge_test_deps="tinterlace_filter"
3601 tinterlace_pad_test_deps="tinterlace_filter"
3602 tonemap_filter_deps="const_nan"
3603 tonemap_vaapi_filter_deps="vaapi VAProcFilterParameterBufferHDRToneMapping"
3604 tonemap_opencl_filter_deps="opencl const_nan"
3605 transpose_opencl_filter_deps="opencl"
3606 transpose_vaapi_filter_deps="vaapi VAProcPipelineCaps_rotation_flags"
3607 unsharp_opencl_filter_deps="opencl"
3608 uspp_filter_deps="gpl avcodec"
3609 vaguedenoiser_filter_deps="gpl"
3610 vidstabdetect_filter_deps="libvidstab"
3611 vidstabtransform_filter_deps="libvidstab"
3612 libvmaf_filter_deps="libvmaf pthreads"
3613 zmq_filter_deps="libzmq"
3614 zoompan_filter_deps="swscale"
3615 zscale_filter_deps="libzimg const_nan"
3616 scale_vaapi_filter_deps="vaapi"
3617 scale_vulkan_filter_deps="vulkan libglslang"
3618 vpp_qsv_filter_deps="libmfx"
3619 vpp_qsv_filter_select="qsvvpp"
3620 xfade_opencl_filter_deps="opencl"
3621 yadif_cuda_filter_deps="ffnvcodec"
3622 yadif_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3623
3624 # examples
3625 avio_list_dir_deps="avformat avutil"
3626 avio_reading_deps="avformat avcodec avutil"
3627 decode_audio_example_deps="avcodec avutil"
3628 decode_video_example_deps="avcodec avutil"
3629 demuxing_decoding_example_deps="avcodec avformat avutil"
3630 encode_audio_example_deps="avcodec avutil"
3631 encode_video_example_deps="avcodec avutil"
3632 extract_mvs_example_deps="avcodec avformat avutil"
3633 filter_audio_example_deps="avfilter avutil"
3634 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3635 filtering_video_example_deps="avfilter avcodec avformat avutil"
3636 http_multiclient_example_deps="avformat avutil fork"
3637 hw_decode_example_deps="avcodec avformat avutil"
3638 metadata_example_deps="avformat avutil"
3639 muxing_example_deps="avcodec avformat avutil swscale"
3640 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3641 remuxing_example_deps="avcodec avformat avutil"
3642 resampling_audio_example_deps="avutil swresample"
3643 scaling_video_example_deps="avutil swscale"
3644 transcode_aac_example_deps="avcodec avformat swresample"
3645 transcoding_example_deps="avfilter avcodec avformat avutil"
3646 vaapi_encode_example_deps="avcodec avutil h264_vaapi_encoder"
3647 vaapi_transcode_example_deps="avcodec avformat avutil h264_vaapi_encoder"
3648
3649 # EXTRALIBS_LIST
3650 cpu_init_extralibs="pthreads_extralibs"
3651 cws2fws_extralibs="zlib_extralibs"
3652
3653 # libraries, in any order
3654 avcodec_deps="avutil"
3655 avcodec_suggest="libm"
3656 avcodec_select="null_bsf"
3657 avdevice_deps="avformat avcodec avutil"
3658 avdevice_suggest="libm"
3659 avfilter_deps="avutil"
3660 avfilter_suggest="libm"
3661 avformat_deps="avcodec avutil"
3662 avformat_suggest="libm network zlib"
3663 avresample_deps="avutil"
3664 avresample_suggest="libm"
3665 avutil_suggest="clock_gettime ffnvcodec libm libdrm libmfx opencl user32 vaapi vulkan videotoolbox corefoundation corevideo coremedia bcrypt"
3666 postproc_deps="avutil gpl"
3667 postproc_suggest="libm"
3668 swresample_deps="avutil"
3669 swresample_suggest="libm libsoxr"
3670 swscale_deps="avutil"
3671 swscale_suggest="libm"
3672
3673 avcodec_extralibs="pthreads_extralibs iconv_extralibs dxva2_extralibs"
3674 avfilter_extralibs="pthreads_extralibs"
3675 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3676
3677 # programs
3678 ffmpeg_deps="avcodec avfilter avformat"
3679 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3680                hflip_filter null_filter
3681                transpose_filter trim_filter vflip_filter"
3682 ffmpeg_suggest="ole32 psapi shell32"
3683 ffplay_deps="avcodec avformat swscale swresample sdl2"
3684 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3685 ffplay_suggest="shell32"
3686 ffprobe_deps="avcodec avformat"
3687 ffprobe_suggest="shell32"
3688
3689 # documentation
3690 podpages_deps="perl"
3691 manpages_deps="perl pod2man"
3692 htmlpages_deps="perl"
3693 htmlpages_deps_any="makeinfo_html texi2html"
3694 txtpages_deps="perl makeinfo"
3695 doc_deps_any="manpages htmlpages podpages txtpages"
3696
3697 # default parameters
3698
3699 logfile="ffbuild/config.log"
3700
3701 # installation paths
3702 prefix_default="/usr/local"
3703 bindir_default='${prefix}/bin'
3704 datadir_default='${prefix}/share/ffmpeg'
3705 docdir_default='${prefix}/share/doc/ffmpeg'
3706 incdir_default='${prefix}/include'
3707 libdir_default='${prefix}/lib'
3708 mandir_default='${prefix}/share/man'
3709
3710 # toolchain
3711 ar_default="ar"
3712 cc_default="gcc"
3713 cxx_default="g++"
3714 host_cc_default="gcc"
3715 doxygen_default="doxygen"
3716 install="install"
3717 ln_s_default="ln -s -f"
3718 nm_default="nm -g"
3719 pkg_config_default=pkg-config
3720 ranlib_default="ranlib"
3721 strip_default="strip"
3722 version_script='--version-script'
3723 objformat="elf32"
3724 x86asmexe_default="nasm"
3725 windres_default="windres"
3726 striptype="direct"
3727
3728 # OS
3729 target_os_default=$(tolower $(uname -s))
3730 host_os=$target_os_default
3731
3732 # machine
3733 if test "$target_os_default" = aix; then
3734     arch_default=$(uname -p)
3735     strip_default="strip -X32_64"
3736     nm_default="nm -g -X32_64"
3737 else
3738     arch_default=$(uname -m)
3739 fi
3740 cpu="generic"
3741 intrinsics="none"
3742
3743 # configurable options
3744 enable $PROGRAM_LIST
3745 enable $DOCUMENT_LIST
3746 enable $EXAMPLE_LIST
3747 enable $(filter_out avresample $LIBRARY_LIST)
3748 enable stripping
3749
3750 enable asm
3751 enable debug
3752 enable doc
3753 enable faan faandct faanidct
3754 enable large_tests
3755 enable optimizations
3756 enable runtime_cpudetect
3757 enable safe_bitstream_reader
3758 enable static
3759 enable swscale_alpha
3760 enable valgrind_backtrace
3761
3762 sws_max_filter_size_default=256
3763 set_default sws_max_filter_size
3764
3765 # internal components are enabled by default
3766 enable $EXTRALIBS_LIST
3767
3768 # Avoid external, non-system, libraries getting enabled by dependency resolution
3769 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3770
3771 # build settings
3772 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3773 LIBPREF="lib"
3774 LIBSUF=".a"
3775 FULLNAME='$(NAME)$(BUILDSUF)'
3776 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3777 SLIBPREF="lib"
3778 SLIBSUF=".so"
3779 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3780 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3781 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3782 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3783 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3784 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3785 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3786
3787 asflags_filter=echo
3788 cflags_filter=echo
3789 ldflags_filter=echo
3790
3791 AS_C='-c'
3792 AS_O='-o $@'
3793 CC_C='-c'
3794 CC_E='-E -o $@'
3795 CC_O='-o $@'
3796 CXX_C='-c'
3797 CXX_O='-o $@'
3798 OBJCC_C='-c'
3799 OBJCC_E='-E -o $@'
3800 OBJCC_O='-o $@'
3801 X86ASM_O='-o $@'
3802 LD_O='-o $@'
3803 LD_LIB='-l%'
3804 LD_PATH='-L'
3805 HOSTCC_C='-c'
3806 HOSTCC_E='-E -o $@'
3807 HOSTCC_O='-o $@'
3808 HOSTLD_O='-o $@'
3809 NVCC_C='-c'
3810 NVCC_O='-o $@'
3811
3812 host_extralibs='-lm'
3813 host_cflags_filter=echo
3814 host_ldflags_filter=echo
3815
3816 target_path='$(CURDIR)'
3817
3818 # since the object filename is not given with the -MM flag, the compiler
3819 # is only able to print the basename, and we must add the path ourselves
3820 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3821 DEPFLAGS='-MM'
3822
3823 mkdir -p ffbuild
3824
3825 # find source path
3826 if test -f configure; then
3827     source_path=.
3828 elif test -f src/configure; then
3829     source_path=src
3830 else
3831     source_path=$(cd $(dirname "$0"); pwd)
3832     case "$source_path" in
3833         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3834     esac
3835     test -e "$source_path/config.h" &&
3836         die "Out of tree builds are impossible with config.h in source dir."
3837 fi
3838
3839 for v in "$@"; do
3840     r=${v#*=}
3841     l=${v%"$r"}
3842     r=$(sh_quote "$r")
3843     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3844 done
3845
3846 find_things_extern(){
3847     thing=$1
3848     pattern=$2
3849     file=$source_path/$3
3850     out=${4:-$thing}
3851     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$out/p" "$file"
3852 }
3853
3854 find_filters_extern(){
3855     file=$source_path/$1
3856     sed -n 's/^extern AVFilter ff_[avfsinkrc]\{2,5\}_\([[:alnum:]_]\{1,\}\);/\1_filter/p' $file
3857 }
3858
3859 FILTER_LIST=$(find_filters_extern libavfilter/allfilters.c)
3860 OUTDEV_LIST=$(find_things_extern muxer AVOutputFormat libavdevice/alldevices.c outdev)
3861 INDEV_LIST=$(find_things_extern demuxer AVInputFormat libavdevice/alldevices.c indev)
3862 MUXER_LIST=$(find_things_extern muxer AVOutputFormat libavformat/allformats.c)
3863 DEMUXER_LIST=$(find_things_extern demuxer AVInputFormat libavformat/allformats.c)
3864 ENCODER_LIST=$(find_things_extern encoder AVCodec libavcodec/allcodecs.c)
3865 DECODER_LIST=$(find_things_extern decoder AVCodec libavcodec/allcodecs.c)
3866 CODEC_LIST="
3867     $ENCODER_LIST
3868     $DECODER_LIST
3869 "
3870 PARSER_LIST=$(find_things_extern parser AVCodecParser libavcodec/parsers.c)
3871 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3872 HWACCEL_LIST=$(find_things_extern hwaccel AVHWAccel libavcodec/hwaccels.h)
3873 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3874
3875 AVCODEC_COMPONENTS_LIST="
3876     $BSF_LIST
3877     $DECODER_LIST
3878     $ENCODER_LIST
3879     $HWACCEL_LIST
3880     $PARSER_LIST
3881 "
3882
3883 AVDEVICE_COMPONENTS_LIST="
3884     $INDEV_LIST
3885     $OUTDEV_LIST
3886 "
3887
3888 AVFILTER_COMPONENTS_LIST="
3889     $FILTER_LIST
3890 "
3891
3892 AVFORMAT_COMPONENTS_LIST="
3893     $DEMUXER_LIST
3894     $MUXER_LIST
3895     $PROTOCOL_LIST
3896 "
3897
3898 ALL_COMPONENTS="
3899     $AVCODEC_COMPONENTS_LIST
3900     $AVDEVICE_COMPONENTS_LIST
3901     $AVFILTER_COMPONENTS_LIST
3902     $AVFORMAT_COMPONENTS_LIST
3903 "
3904
3905 for n in $COMPONENT_LIST; do
3906     v=$(toupper ${n%s})_LIST
3907     eval enable \$$v
3908     eval ${n}_if_any="\$$v"
3909 done
3910
3911 enable $ARCH_EXT_LIST
3912
3913 die_unknown(){
3914     echo "Unknown option \"$1\"."
3915     echo "See $0 --help for available options."
3916     exit 1
3917 }
3918
3919 print_in_columns() {
3920     tr ' ' '\n' | sort | tr '\r\n' '  ' | awk -v col_width=24 -v width="$ncols" '
3921     {
3922         num_cols = width > col_width ? int(width / col_width) : 1;
3923         num_rows = int((NF + num_cols-1) / num_cols);
3924         y = x = 1;
3925         for (y = 1; y <= num_rows; y++) {
3926             i = y;
3927             for (x = 1; x <= num_cols; x++) {
3928                 if (i <= NF) {
3929                   line = sprintf("%s%-" col_width "s", line, $i);
3930                 }
3931                 i = i + num_rows;
3932             }
3933             print line; line = "";
3934         }
3935     }' | sed 's/ *$//'
3936 }
3937
3938 show_list() {
3939     suffix=_$1
3940     shift
3941     echo $* | sed s/$suffix//g | print_in_columns
3942     exit 0
3943 }
3944
3945 rand_list(){
3946     IFS=', '
3947     set -- $*
3948     unset IFS
3949     for thing; do
3950         comp=${thing%:*}
3951         prob=${thing#$comp}
3952         prob=${prob#:}
3953         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3954         echo "prob ${prob:-0.5}"
3955         printf '%s\n' $comp
3956     done
3957 }
3958
3959 do_random(){
3960     action=$1
3961     shift
3962     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3963     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3964 }
3965
3966 for opt do
3967     optval="${opt#*=}"
3968     case "$opt" in
3969         --extra-ldflags=*)
3970             add_ldflags $optval
3971         ;;
3972         --extra-ldexeflags=*)
3973             add_ldexeflags $optval
3974         ;;
3975         --extra-ldsoflags=*)
3976             add_ldsoflags $optval
3977         ;;
3978         --extra-ldlibflags=*)
3979             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3980                  "removed in the future. Use --extra-ldsoflags instead."
3981             add_ldsoflags $optval
3982         ;;
3983         --extra-libs=*)
3984             add_extralibs $optval
3985         ;;
3986         --disable-devices)
3987             disable $INDEV_LIST $OUTDEV_LIST
3988         ;;
3989         --enable-debug=*)
3990             debuglevel="$optval"
3991         ;;
3992         --disable-programs)
3993             disable $PROGRAM_LIST
3994         ;;
3995         --disable-everything)
3996             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3997         ;;
3998         --disable-all)
3999             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
4000             disable $LIBRARY_LIST $PROGRAM_LIST doc
4001             enable avutil
4002         ;;
4003         --enable-random|--disable-random)
4004             action=${opt%%-random}
4005             do_random ${action#--} $COMPONENT_LIST
4006         ;;
4007         --enable-random=*|--disable-random=*)
4008             action=${opt%%-random=*}
4009             do_random ${action#--} $optval
4010         ;;
4011         --enable-sdl)
4012             enable sdl2
4013         ;;
4014         --enable-*=*|--disable-*=*)
4015             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
4016             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
4017             eval list=\$$(toupper $thing)_LIST
4018             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
4019             list=$(filter "$name" $list)
4020             [ "$list" = "" ] && warn "Option $opt did not match anything"
4021             test $action = enable && warn_if_gets_disabled $list
4022             $action $list
4023         ;;
4024         --enable-yasm|--disable-yasm)
4025             warn "The ${opt} option is only provided for compatibility and will be\n"\
4026                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
4027             test $opt = --enable-yasm && x86asm=yes || x86asm=no
4028         ;;
4029         --yasmexe=*)
4030             warn "The --yasmexe option is only provided for compatibility and will be\n"\
4031                  "removed in the future. Use --x86asmexe instead."
4032             x86asmexe="$optval"
4033         ;;
4034         --enable-?*|--disable-?*)
4035             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
4036             if is_in $option $COMPONENT_LIST; then
4037                 test $action = disable && action=unset
4038                 eval $action \$$(toupper ${option%s})_LIST
4039             elif is_in $option $CMDLINE_SELECT; then
4040                 $action $option
4041             else
4042                 die_unknown $opt
4043             fi
4044         ;;
4045         --list-*)
4046             NAME="${opt#--list-}"
4047             is_in $NAME $COMPONENT_LIST || die_unknown $opt
4048             NAME=${NAME%s}
4049             eval show_list $NAME \$$(toupper $NAME)_LIST
4050         ;;
4051         --help|-h) show_help
4052         ;;
4053         --quiet|-q) quiet=yes
4054         ;;
4055         --fatal-warnings) enable fatal_warnings
4056         ;;
4057         --libfuzzer=*)
4058             libfuzzer_path="$optval"
4059         ;;
4060         *)
4061             optname="${opt%%=*}"
4062             optname="${optname#--}"
4063             optname=$(echo "$optname" | sed 's/-/_/g')
4064             if is_in $optname $CMDLINE_SET; then
4065                 eval $optname='$optval'
4066             elif is_in $optname $CMDLINE_APPEND; then
4067                 append $optname "$optval"
4068             else
4069                 die_unknown $opt
4070             fi
4071         ;;
4072     esac
4073 done
4074
4075 for e in $env; do
4076     eval "export $e"
4077 done
4078
4079 if disabled autodetect; then
4080
4081     # Unless iconv is explicitely disabled by the user, we still want to probe
4082     # for the iconv from the libc.
4083     disabled iconv || enable libc_iconv
4084
4085     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
4086     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
4087 fi
4088 # Mark specifically enabled, but normally autodetected libraries as requested.
4089 for lib in $AUTODETECT_LIBS; do
4090     enabled $lib && request $lib
4091 done
4092 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
4093 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
4094 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
4095
4096 disabled logging && logfile=/dev/null
4097
4098 # command line configuration sanity checks
4099
4100 # we need to build at least one lib type
4101 if ! enabled_any static shared; then
4102     cat <<EOF
4103 At least one library type must be built.
4104 Specify --enable-static to build the static libraries or --enable-shared to
4105 build the shared libraries as well. To only build the shared libraries specify
4106 --disable-static in addition to --enable-shared.
4107 EOF
4108     exit 1
4109 fi
4110
4111 die_license_disabled() {
4112     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
4113 }
4114
4115 die_license_disabled_gpl() {
4116     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
4117 }
4118
4119 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
4120 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
4121
4122 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
4123 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
4124
4125 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4126
4127 if enabled nonfree; then
4128     license="nonfree and unredistributable"
4129 elif enabled gplv3; then
4130     license="GPL version 3 or later"
4131 elif enabled lgplv3; then
4132     license="LGPL version 3 or later"
4133 elif enabled gpl; then
4134     license="GPL version 2 or later"
4135 else
4136     license="LGPL version 2.1 or later"
4137 fi
4138
4139 enabled_all gnutls openssl &&
4140     die "GnuTLS and OpenSSL must not be enabled at the same time."
4141
4142 enabled_all gnutls mbedtls &&
4143     die "GnuTLS and mbedTLS must not be enabled at the same time."
4144
4145 enabled_all openssl mbedtls &&
4146     die "OpenSSL and mbedTLS must not be enabled at the same time."
4147
4148 # Disable all the library-specific components if the library itself
4149 # is disabled, see AVCODEC_LIST and following _LIST variables.
4150
4151 disable_components(){
4152     disabled ${1} && disable $(
4153         eval components="\$$(toupper ${1})_COMPONENTS"
4154         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
4155     )
4156 }
4157
4158 map 'disable_components $v' $LIBRARY_LIST
4159
4160 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
4161 set >> $logfile
4162
4163 test -n "$valgrind" && toolchain="valgrind-memcheck"
4164
4165 enabled ossfuzz && ! echo $CFLAGS | grep -q -- "-fsanitize="  && ! echo $CFLAGS | grep -q -- "-fcoverage-mapping" &&{
4166     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
4167     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
4168 }
4169
4170 case "$toolchain" in
4171     *-asan)
4172         cc_default="${toolchain%-asan}"
4173         add_cflags  -fsanitize=address
4174         add_ldflags -fsanitize=address
4175     ;;
4176     *-msan)
4177         cc_default="${toolchain%-msan}"
4178         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
4179         add_ldflags -fsanitize=memory
4180     ;;
4181     *-tsan)
4182         cc_default="${toolchain%-tsan}"
4183         add_cflags  -fsanitize=thread
4184         add_ldflags -fsanitize=thread
4185         case "$toolchain" in
4186             gcc-tsan)
4187                 add_cflags  -fPIC
4188                 add_ldflags -fPIC
4189                 ;;
4190         esac
4191     ;;
4192     *-usan)
4193         cc_default="${toolchain%-usan}"
4194         add_cflags  -fsanitize=undefined
4195         add_ldflags -fsanitize=undefined
4196     ;;
4197     valgrind-*)
4198         target_exec_default="valgrind"
4199         case "$toolchain" in
4200             valgrind-massif)
4201                 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"
4202                 ;;
4203             valgrind-memcheck)
4204                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
4205                 ;;
4206         esac
4207     ;;
4208     msvc)
4209         # Check whether the current MSVC version needs the C99 converter.
4210         # From MSVC 2013 (compiler major version 18) onwards, it does actually
4211         # support enough of C99 to build ffmpeg. Default to the new
4212         # behaviour if the regexp was unable to match anything, since this
4213         # successfully parses the version number of existing supported
4214         # versions that require the converter (MSVC 2010 and 2012).
4215         cl_major_ver=$(cl.exe 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
4216         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
4217             cc_default="cl.exe"
4218             cxx_default="cl.exe"
4219         else
4220             die "Unsupported MSVC version (2013 or newer required)"
4221         fi
4222         ld_default="$source_path/compat/windows/mslink"
4223         nm_default="dumpbin.exe -symbols"
4224         ar_default="lib.exe"
4225         case "$arch" in
4226         aarch64|arm64)
4227             as_default="armasm64.exe"
4228             ;;
4229         arm*)
4230             as_default="armasm.exe"
4231             ;;
4232         esac
4233         target_os_default="win32"
4234         # Use a relative path for TMPDIR. This makes sure all the
4235         # ffconf temp files are written with a relative path, avoiding
4236         # issues with msys/win32 path conversion for MSVC parameters
4237         # such as -Fo<file> or -out:<file>.
4238         TMPDIR=.
4239     ;;
4240     icl)
4241         cc_default="icl"
4242         ld_default="xilink"
4243         nm_default="dumpbin -symbols"
4244         ar_default="xilib"
4245         target_os_default="win32"
4246         TMPDIR=.
4247     ;;
4248     gcov)
4249         add_cflags  -fprofile-arcs -ftest-coverage
4250         add_ldflags -fprofile-arcs -ftest-coverage
4251     ;;
4252     llvm-cov)
4253         add_cflags -fprofile-arcs -ftest-coverage
4254         add_ldflags --coverage
4255     ;;
4256     hardened)
4257         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
4258         add_cflags   -fno-strict-overflow -fstack-protector-all
4259         add_ldflags  -Wl,-z,relro -Wl,-z,now
4260         add_cflags   -fPIE
4261         add_ldexeflags -fPIE -pie
4262     ;;
4263     ?*)
4264         die "Unknown toolchain $toolchain"
4265     ;;
4266 esac
4267
4268 if test -n "$cross_prefix"; then
4269     test -n "$arch" && test -n "$target_os" ||
4270         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
4271     enable cross_compile
4272 fi
4273
4274 set_default target_os
4275 if test "$target_os" = android; then
4276     cc_default="clang"
4277 fi
4278
4279 ar_default="${cross_prefix}${ar_default}"
4280 cc_default="${cross_prefix}${cc_default}"
4281 cxx_default="${cross_prefix}${cxx_default}"
4282 nm_default="${cross_prefix}${nm_default}"
4283 pkg_config_default="${cross_prefix}${pkg_config_default}"
4284 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
4285     ranlib_default="${cross_prefix}${ranlib_default} -D"
4286 else
4287     ranlib_default="${cross_prefix}${ranlib_default}"
4288 fi
4289 strip_default="${cross_prefix}${strip_default}"
4290 windres_default="${cross_prefix}${windres_default}"
4291
4292 sysinclude_default="${sysroot}/usr/include"
4293
4294 if enabled cuda_sdk; then
4295     warn "Option --enable-cuda-sdk is deprecated. Use --enable-cuda-nvcc instead."
4296     enable cuda_nvcc
4297 fi
4298
4299 if enabled cuda_nvcc; then
4300     nvcc_default="nvcc"
4301     nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
4302 else
4303     nvcc_default="clang"
4304     nvccflags_default="--cuda-gpu-arch=sm_30 -O2"
4305     NVCC_C=""
4306 fi
4307
4308 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
4309     target_exec x86asmexe nvcc
4310 enabled cross_compile || host_cc_default=$cc
4311 set_default host_cc
4312
4313 pkg_config_fail_message=""
4314 if ! $pkg_config --version >/dev/null 2>&1; then
4315     warn "$pkg_config not found, library detection may fail."
4316     pkg_config=false
4317 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
4318     pkg_config_fail_message="
4319 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
4320 fi
4321
4322 if test $doxygen != $doxygen_default && \
4323   ! $doxygen --version >/dev/null 2>&1; then
4324     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
4325 fi
4326
4327 exesuf() {
4328     case $1 in
4329         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
4330     esac
4331 }
4332
4333 EXESUF=$(exesuf $target_os)
4334 HOSTEXESUF=$(exesuf $host_os)
4335
4336 # set temporary file name
4337 : ${TMPDIR:=$TEMPDIR}
4338 : ${TMPDIR:=$TMP}
4339 : ${TMPDIR:=/tmp}
4340
4341 if [ -n "$tempprefix" ] ; then
4342     mktemp(){
4343         tmpname="$tempprefix.${HOSTNAME}.${UID}"
4344         echo "$tmpname"
4345         mkdir "$tmpname"
4346     }
4347 elif ! test_cmd mktemp -u XXXXXX; then
4348     # simple replacement for missing mktemp
4349     # NOT SAFE FOR GENERAL USE
4350     mktemp(){
4351         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
4352         echo "$tmpname"
4353         mkdir "$tmpname"
4354     }
4355 fi
4356
4357 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
4358     die "Unable to create temporary directory in $TMPDIR."
4359
4360 tmpfile(){
4361     tmp="${FFTMPDIR}/test"$2
4362     (set -C; exec > $tmp) 2> /dev/null ||
4363         die "Unable to create temporary file in $FFTMPDIR."
4364     eval $1=$tmp
4365 }
4366
4367 trap 'rm -rf -- "$FFTMPDIR"' EXIT
4368 trap 'exit 2' INT
4369
4370 tmpfile TMPASM .asm
4371 tmpfile TMPC   .c
4372 tmpfile TMPCPP .cpp
4373 tmpfile TMPE   $EXESUF
4374 tmpfile TMPH   .h
4375 tmpfile TMPM   .m
4376 tmpfile TMPCU  .cu
4377 tmpfile TMPO   .o
4378 tmpfile TMPS   .S
4379 tmpfile TMPSH  .sh
4380 tmpfile TMPV   .ver
4381
4382 unset -f mktemp
4383
4384 chmod +x $TMPE
4385
4386 # make sure we can execute files in $TMPDIR
4387 cat > $TMPSH 2>> $logfile <<EOF
4388 #! /bin/sh
4389 EOF
4390 chmod +x $TMPSH >> $logfile 2>&1
4391 if ! $TMPSH >> $logfile 2>&1; then
4392     cat <<EOF
4393 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
4394 variable to another directory and make sure that it is not mounted noexec.
4395 EOF
4396     die "Sanity test failed."
4397 fi
4398
4399 armasm_flags(){
4400     for flag; do
4401         case $flag in
4402             # Filter out MSVC cl.exe options from cflags that shouldn't
4403             # be passed to gas-preprocessor
4404             -M[TD]*)                                            ;;
4405             *)                  echo $flag                      ;;
4406         esac
4407    done
4408 }
4409
4410 cparser_flags(){
4411     for flag; do
4412         case $flag in
4413             -Wno-switch)             echo -Wno-switch-enum ;;
4414             -Wno-format-zero-length) ;;
4415             -Wdisabled-optimization) ;;
4416             -Wno-pointer-sign)       echo -Wno-other ;;
4417             *)                       echo $flag ;;
4418         esac
4419     done
4420 }
4421
4422 msvc_common_flags(){
4423     for flag; do
4424         case $flag in
4425             # In addition to specifying certain flags under the compiler
4426             # specific filters, they must be specified here as well or else the
4427             # generic catch all at the bottom will print the original flag.
4428             -Wall)                ;;
4429             -Wextra)              ;;
4430             -std=c*)              ;;
4431             # Common flags
4432             -fomit-frame-pointer) ;;
4433             -g)                   echo -Z7 ;;
4434             -fno-math-errno)      ;;
4435             -fno-common)          ;;
4436             -fno-signed-zeros)    ;;
4437             -fPIC)                ;;
4438             -mthumb)              ;;
4439             -march=*)             ;;
4440             -lz)                  echo zlib.lib ;;
4441             -lx264)               echo libx264.lib ;;
4442             -lstdc++)             ;;
4443             -l*)                  echo ${flag#-l}.lib ;;
4444             -LARGEADDRESSAWARE)   echo $flag ;;
4445             -L*)                  echo -libpath:${flag#-L} ;;
4446             -Wl,*)                ;;
4447             *)                    echo $flag ;;
4448         esac
4449     done
4450 }
4451
4452 msvc_flags(){
4453     msvc_common_flags "$@"
4454     for flag; do
4455         case $flag in
4456             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4457                                        -wd4554 ;;
4458             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4459                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4460                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4461                                        -wd4307 \
4462                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4463         esac
4464     done
4465 }
4466
4467 icl_flags(){
4468     msvc_common_flags "$@"
4469     for flag; do
4470         case $flag in
4471             # Despite what Intel's documentation says -Wall, which is supported
4472             # on Windows, does enable remarks so disable them here.
4473             -Wall)                echo $flag -Qdiag-disable:remark ;;
4474             -std=c99)             echo -Qstd=c99 ;;
4475             -flto)                echo -ipo ;;
4476         esac
4477     done
4478 }
4479
4480 icc_flags(){
4481     for flag; do
4482         case $flag in
4483             -flto)                echo -ipo ;;
4484             *)                    echo $flag ;;
4485         esac
4486     done
4487 }
4488
4489 suncc_flags(){
4490     for flag; do
4491         case $flag in
4492             -march=*|-mcpu=*)
4493                 case "${flag#*=}" in
4494                     native)                   echo -xtarget=native       ;;
4495                     v9|niagara)               echo -xarch=sparc          ;;
4496                     ultrasparc)               echo -xarch=sparcvis       ;;
4497                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4498                     i586|pentium)             echo -xchip=pentium        ;;
4499                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4500                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4501                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4502                     pentium4*)          echo -xtarget=pentium4           ;;
4503                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4504                     *-sse3)             echo -xarch=sse3                 ;;
4505                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4506                     bonnell)                   echo -xarch=ssse3         ;;
4507                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4508                     westmere)                  echo -xtarget=westmere    ;;
4509                     silvermont)                echo -xarch=sse4_2        ;;
4510                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4511                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4512                                                echo -xarch=avx           ;;
4513                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4514                     btver1)                    echo -xarch=amdsse4a      ;;
4515                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4516                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4517                     k8|opteron|athlon64|athlon-fx)
4518                                                echo -xarch=sse2a         ;;
4519                     athlon*)                   echo -xarch=pentium_proa  ;;
4520                 esac
4521                 ;;
4522             -std=c99)             echo -xc99              ;;
4523             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4524             -fPIC)                echo -KPIC -xcode=pic32 ;;
4525             -W*,*)                echo $flag              ;;
4526             -f*-*|-W*|-mimpure-text)                      ;;
4527             -shared)              echo -G                 ;;
4528             *)                    echo $flag              ;;
4529         esac
4530     done
4531 }
4532
4533 probe_cc(){
4534     pfx=$1
4535     _cc=$2
4536     first=$3
4537
4538     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4539     unset _ld_o _ldflags _ld_lib _ld_path
4540     unset _depflags _DEPCMD _DEPFLAGS
4541     _flags_filter=echo
4542
4543     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4544         true # no-op to avoid reading stdin in following checks
4545     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4546         _type=llvm_gcc
4547         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4548         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4549         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4550         _cflags_speed='-O3'
4551         _cflags_size='-Os'
4552     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4553         _type=gcc
4554         gcc_version=$($_cc --version | head -n1)
4555         gcc_basever=$($_cc -dumpversion)
4556         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4557         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4558         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4559         case $gcc_basever in
4560             2) ;;
4561             2.*) ;;
4562             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4563         esac
4564         if [ "$first" = true ]; then
4565             case $gcc_basever in
4566                 4.2*)
4567                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4568             esac
4569         fi
4570         _cflags_speed='-O3'
4571         _cflags_size='-Os'
4572     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4573         _type=icc
4574         _ident=$($_cc --version | head -n1)
4575         _depflags='-MMD'
4576         _cflags_speed='-O3'
4577         _cflags_size='-Os'
4578         _cflags_noopt='-O1'
4579         _flags_filter=icc_flags
4580     elif $_cc -v 2>&1 | grep -q xlc; then
4581         _type=xlc
4582         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4583         _cflags_speed='-O5'
4584         _cflags_size='-O5 -qcompact'
4585     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4586         test -d "$sysroot" || die "No valid sysroot specified."
4587         _type=armcc
4588         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4589         armcc_conf="$PWD/armcc.conf"
4590         $_cc --arm_linux_configure                 \
4591              --arm_linux_config_file="$armcc_conf" \
4592              --configure_sysroot="$sysroot"        \
4593              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4594              die "Error creating armcc configuration file."
4595         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4596         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4597         as_default="${cross_prefix}gcc"
4598         _depflags='-MMD'
4599         _cflags_speed='-O3'
4600         _cflags_size='-Os'
4601     elif $_cc -v 2>&1 | grep -q clang && ! $_cc -? > /dev/null 2>&1; then
4602         _type=clang
4603         _ident=$($_cc --version 2>/dev/null | head -n1)
4604         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4605         _cflags_speed='-O3'
4606         _cflags_size='-Oz'
4607     elif $_cc -V 2>&1 | grep -q Sun; then
4608         _type=suncc
4609         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4610         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4611         _DEPFLAGS='-xM1 -xc99'
4612         _ldflags='-std=c99'
4613         _cflags_speed='-O5'
4614         _cflags_size='-O5 -xspace'
4615         _flags_filter=suncc_flags
4616     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4617         _type=pathscale
4618         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4619         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4620         _cflags_speed='-O2'
4621         _cflags_size='-Os'
4622         _flags_filter='filter_out -Wdisabled-optimization'
4623     elif $_cc -v 2>&1 | grep -q Open64; then
4624         _type=open64
4625         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4626         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4627         _cflags_speed='-O2'
4628         _cflags_size='-Os'
4629         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4630     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4631         _type=armasm
4632         _ident=$($_cc | head -n1)
4633         # 4509: "This form of conditional instruction is deprecated"
4634         _flags="-nologo -ignore 4509"
4635         _flags_filter=armasm_flags
4636     elif $_cc 2>&1 | grep -q Intel; then
4637         _type=icl
4638         _ident=$($_cc 2>&1 | head -n1)
4639         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4640         # Not only is O3 broken on 13.x+ but it is slower on all previous
4641         # versions (tested) as well.
4642         _cflags_speed="-O2"
4643         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4644         if $_cc 2>&1 | grep -q Linker; then
4645             _ld_o='-out:$@'
4646         else
4647             _ld_o='-Fe$@'
4648         fi
4649         _cc_o='-Fo$@'
4650         _cc_e='-P'
4651         _flags_filter=icl_flags
4652         _ld_lib='lib%.a'
4653         _ld_path='-libpath:'
4654         # -Qdiag-error to make icl error when seeing certain unknown arguments
4655         _flags='-nologo -Qdiag-error:4044,10157'
4656         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4657         # with MSVC which enables it by default.
4658         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4659         disable stripping
4660     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4661         # lld can emulate multiple different linkers; in ms link.exe mode,
4662         # the -? parameter gives the help output which contains an identifyable
4663         # string, while it gives an error in other modes.
4664         _type=lld-link
4665         # The link.exe mode doesn't have a switch for getting the version,
4666         # but we can force it back to gnu mode and get the version from there.
4667         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4668         _ld_o='-out:$@'
4669         _flags_filter=msvc_flags
4670         _ld_lib='lib%.a'
4671         _ld_path='-libpath:'
4672     elif $_cc -nologo- 2>&1 | grep -q Microsoft || { $_cc -v 2>&1 | grep -q clang && $_cc -? > /dev/null 2>&1; }; then
4673         _type=msvc
4674         if $_cc -nologo- 2>&1 | grep -q Microsoft; then
4675             _ident=$($_cc 2>&1 | head -n1 | tr -d '\r')
4676         else
4677             _ident=$($_cc --version 2>/dev/null | head -n1 | tr -d '\r')
4678         fi
4679         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4680         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4681         _cflags_speed="-O2"
4682         _cflags_size="-O1"
4683         _cflags_noopt="-O1"
4684         if $_cc -nologo- 2>&1 | grep -q Linker; then
4685             _ld_o='-out:$@'
4686         else
4687             _ld_o='-Fe$@'
4688         fi
4689         _cc_o='-Fo$@'
4690         _cc_e='-P -Fi$@'
4691         _flags_filter=msvc_flags
4692         _ld_lib='lib%.a'
4693         _ld_path='-libpath:'
4694         _flags='-nologo'
4695         disable stripping
4696     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4697         _type=cparser
4698         _ident=$($_cc --version | head -n1)
4699         _depflags='-MMD'
4700         _cflags_speed='-O4'
4701         _cflags_size='-O2'
4702         _flags_filter=cparser_flags
4703     fi
4704
4705     eval ${pfx}_type=\$_type
4706     eval ${pfx}_ident=\$_ident
4707 }
4708
4709 set_ccvars(){
4710     eval ${1}_C=\${_cc_c-\${${1}_C}}
4711     eval ${1}_E=\${_cc_e-\${${1}_E}}
4712     eval ${1}_O=\${_cc_o-\${${1}_O}}
4713
4714     if [ -n "$_depflags" ]; then
4715         eval ${1}_DEPFLAGS=\$_depflags
4716     else
4717         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4718         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4719         eval DEP${1}FLAGS=\$_flags
4720     fi
4721 }
4722
4723 probe_cc cc "$cc" "true"
4724 cflags_filter=$_flags_filter
4725 cflags_speed=$_cflags_speed
4726 cflags_size=$_cflags_size
4727 cflags_noopt=$_cflags_noopt
4728 add_cflags $_flags $_cflags
4729 cc_ldflags=$_ldflags
4730 set_ccvars CC
4731 set_ccvars CXX
4732
4733 probe_cc hostcc "$host_cc"
4734 host_cflags_filter=$_flags_filter
4735 host_cflags_speed=$_cflags_speed
4736 add_host_cflags  $_flags $_cflags
4737 set_ccvars HOSTCC
4738
4739 test -n "$cc_type" && enable $cc_type ||
4740     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4741
4742 : ${as_default:=$cc}
4743 : ${objcc_default:=$cc}
4744 : ${dep_cc_default:=$cc}
4745 : ${ld_default:=$cc}
4746 : ${host_ld_default:=$host_cc}
4747 set_default ar as objcc dep_cc ld ln_s host_ld windres
4748
4749 probe_cc as "$as"
4750 asflags_filter=$_flags_filter
4751 add_asflags $_flags $_cflags
4752 set_ccvars AS
4753
4754 probe_cc objcc "$objcc"
4755 objcflags_filter=$_flags_filter
4756 add_objcflags $_flags $_cflags
4757 set_ccvars OBJC
4758
4759 probe_cc ld "$ld"
4760 ldflags_filter=$_flags_filter
4761 add_ldflags $_flags $_ldflags
4762 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4763 LD_O=${_ld_o-$LD_O}
4764 LD_LIB=${_ld_lib-$LD_LIB}
4765 LD_PATH=${_ld_path-$LD_PATH}
4766
4767 probe_cc hostld "$host_ld"
4768 host_ldflags_filter=$_flags_filter
4769 add_host_ldflags $_flags $_ldflags
4770 HOSTLD_O=${_ld_o-$HOSTLD_O}
4771
4772 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4773     probe_cc depcc "$dep_cc"
4774     CCDEP=${_DEPCMD:-$DEPCMD}
4775     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4776     DEPCCFLAGS=$_flags
4777 fi
4778
4779 if $ar 2>&1 | grep -q Microsoft; then
4780     arflags="-nologo"
4781     ar_o='-out:$@'
4782 elif $ar 2>&1 | grep -q "\[D\] "; then
4783     arflags="rcD"
4784     ar_o='$@'
4785 else
4786     arflags="rc"
4787     ar_o='$@'
4788 fi
4789
4790 add_cflags $extra_cflags
4791 add_cxxflags $extra_cxxflags
4792 add_objcflags $extra_objcflags
4793 add_asflags $extra_cflags
4794
4795 if test -n "$sysroot"; then
4796     case "$cc_type" in
4797         gcc|llvm_gcc|clang)
4798             add_cppflags --sysroot="$sysroot"
4799             add_ldflags --sysroot="$sysroot"
4800         ;;
4801     esac
4802 fi
4803
4804 if test "$cpu" = host; then
4805     enabled cross_compile &&
4806         warn "--cpu=host makes no sense when cross-compiling."
4807
4808     case "$cc_type" in
4809         gcc|llvm_gcc)
4810             check_native(){
4811                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4812                 sed -n "/cc1.*$1=/{
4813                             s/.*$1=\\([^ ]*\\).*/\\1/
4814                             p
4815                             q
4816                         }" $TMPE
4817             }
4818             cpu=$(check_native -march || check_native -mcpu)
4819         ;;
4820         clang)
4821             check_native(){
4822                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4823                 sed -n "/cc1.*-target-cpu /{
4824                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4825                             p
4826                             q
4827                         }" $TMPE
4828             }
4829             cpu=$(check_native -march)
4830         ;;
4831     esac
4832
4833     test "${cpu:-host}" = host &&
4834         die "--cpu=host not supported with compiler $cc"
4835 fi
4836
4837 # Deal with common $arch aliases
4838 case "$arch" in
4839     aarch64|arm64)
4840         arch="aarch64"
4841     ;;
4842     arm*|iPad*|iPhone*)
4843         arch="arm"
4844     ;;
4845     mips*|IP*)
4846         case "$arch" in
4847         *el)
4848             add_cppflags -EL
4849             add_ldflags -EL
4850         ;;
4851         *eb)
4852             add_cppflags -EB
4853             add_ldflags -EB
4854         ;;
4855         esac
4856         arch="mips"
4857     ;;
4858     parisc*|hppa*)
4859         arch="parisc"
4860     ;;
4861     "Power Macintosh"|ppc*|powerpc*)
4862         arch="ppc"
4863     ;;
4864     s390|s390x)
4865         arch="s390"
4866     ;;
4867     sh4|sh)
4868         arch="sh4"
4869     ;;
4870     sun4*|sparc*)
4871         arch="sparc"
4872     ;;
4873     tilegx|tile-gx)
4874         arch="tilegx"
4875     ;;
4876     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4877         arch="x86"
4878     ;;
4879 esac
4880
4881 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4882 enable $arch
4883
4884 # Add processor-specific flags
4885 if enabled aarch64; then
4886
4887     case $cpu in
4888         armv*)
4889             cpuflags="-march=$cpu"
4890         ;;
4891         *)
4892             cpuflags="-mcpu=$cpu"
4893         ;;
4894     esac
4895
4896 elif enabled alpha; then
4897
4898     cpuflags="-mcpu=$cpu"
4899
4900 elif enabled arm; then
4901
4902     check_arm_arch() {
4903         test_cpp_condition stddef.h \
4904             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4905             $cpuflags
4906     }
4907
4908     probe_arm_arch() {
4909         if   check_arm_arch 4;        then echo armv4
4910         elif check_arm_arch 4T;       then echo armv4t
4911         elif check_arm_arch 5;        then echo armv5
4912         elif check_arm_arch 5E;       then echo armv5e
4913         elif check_arm_arch 5T;       then echo armv5t
4914         elif check_arm_arch 5TE;      then echo armv5te
4915         elif check_arm_arch 5TEJ;     then echo armv5te
4916         elif check_arm_arch 6;        then echo armv6
4917         elif check_arm_arch 6J;       then echo armv6j
4918         elif check_arm_arch 6K;       then echo armv6k
4919         elif check_arm_arch 6Z;       then echo armv6z
4920         elif check_arm_arch 6KZ;      then echo armv6zk
4921         elif check_arm_arch 6ZK;      then echo armv6zk
4922         elif check_arm_arch 6T2;      then echo armv6t2
4923         elif check_arm_arch 7;        then echo armv7
4924         elif check_arm_arch 7A  7_A;  then echo armv7-a
4925         elif check_arm_arch 7S;       then echo armv7-a
4926         elif check_arm_arch 7R  7_R;  then echo armv7-r
4927         elif check_arm_arch 7M  7_M;  then echo armv7-m
4928         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4929         elif check_arm_arch 8A  8_A;  then echo armv8-a
4930         fi
4931     }
4932
4933     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4934
4935     case $cpu in
4936         armv*)
4937             cpuflags="-march=$cpu"
4938             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4939         ;;
4940         *)
4941             cpuflags="-mcpu=$cpu"
4942             case $cpu in
4943                 cortex-a*)                               subarch=armv7a  ;;
4944                 cortex-r*)                               subarch=armv7r  ;;
4945                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4946                 arm11*)                                  subarch=armv6   ;;
4947                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4948                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4949                 *)                             subarch=$(probe_arm_arch) ;;
4950             esac
4951         ;;
4952     esac
4953
4954     case "$subarch" in
4955         armv5t*)    enable fast_clz                ;;
4956         armv[6-8]*)
4957             enable fast_clz
4958             disabled fast_unaligned || enable fast_unaligned
4959             ;;
4960     esac
4961
4962 elif enabled avr32; then
4963
4964     case $cpu in
4965         ap7[02]0[0-2])
4966             subarch="avr32_ap"
4967             cpuflags="-mpart=$cpu"
4968         ;;
4969         ap)
4970             subarch="avr32_ap"
4971             cpuflags="-march=$cpu"
4972         ;;
4973         uc3[ab]*)
4974             subarch="avr32_uc"
4975             cpuflags="-mcpu=$cpu"
4976         ;;
4977         uc)
4978             subarch="avr32_uc"
4979             cpuflags="-march=$cpu"
4980         ;;
4981     esac
4982
4983 elif enabled bfin; then
4984
4985     cpuflags="-mcpu=$cpu"
4986
4987 elif enabled mips; then
4988
4989     cpuflags="-march=$cpu"
4990
4991     if [ "$cpu" != "generic" ]; then
4992         disable mips32r2
4993         disable mips32r5
4994         disable mips64r2
4995         disable mips32r6
4996         disable mips64r6
4997         disable loongson2
4998         disable loongson3
4999
5000         case $cpu in
5001             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
5002                 enable mips32r2
5003                 disable msa
5004             ;;
5005             p5600|i6400|p6600)
5006                 disable mipsdsp
5007                 disable mipsdspr2
5008             ;;
5009             loongson*)
5010                 enable loongson2
5011                 enable loongson3
5012                 enable local_aligned
5013                 enable simd_align_16
5014                 enable fast_64bit
5015                 enable fast_clz
5016                 enable fast_cmov
5017                 enable fast_unaligned
5018                 disable aligned_stack
5019                 disable mipsdsp
5020                 disable mipsdspr2
5021                 # When gcc version less than 5.3.0, add -fno-expensive-optimizations flag.
5022                 if [ $cc == gcc ]; then
5023                     gcc_version=$(gcc -dumpversion)
5024                     if [ "$(echo "$gcc_version 5.3.0" | tr " " "\n" | sort -rV | head -n 1)" == "$gcc_version" ]; then
5025                         expensive_optimization_flag=""
5026                     else
5027                         expensive_optimization_flag="-fno-expensive-optimizations"
5028                     fi
5029                 fi
5030                 case $cpu in
5031                     loongson3*)
5032                         cpuflags="-march=loongson3a -mhard-float $expensive_optimization_flag"
5033                     ;;
5034                     loongson2e)
5035                         cpuflags="-march=loongson2e -mhard-float $expensive_optimization_flag"
5036                     ;;
5037                     loongson2f)
5038                         cpuflags="-march=loongson2f -mhard-float $expensive_optimization_flag"
5039                     ;;
5040                 esac
5041             ;;
5042             *)
5043                 # Unknown CPU. Disable everything.
5044                 warn "unknown CPU. Disabling all MIPS optimizations."
5045                 disable mipsfpu
5046                 disable mipsdsp
5047                 disable mipsdspr2
5048                 disable msa
5049                 disable mmi
5050             ;;
5051         esac
5052
5053         case $cpu in
5054             24kc)
5055                 disable mipsfpu
5056                 disable mipsdsp
5057                 disable mipsdspr2
5058             ;;
5059             24kf*)
5060                 disable mipsdsp
5061                 disable mipsdspr2
5062             ;;
5063             24kec|34kc|1004kc)
5064                 disable mipsfpu
5065                 disable mipsdspr2
5066             ;;
5067             24kef*|34kf*|1004kf*)
5068                 disable mipsdspr2
5069             ;;
5070             74kc)
5071                 disable mipsfpu
5072             ;;
5073             p5600)
5074                 enable mips32r5
5075                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
5076             ;;
5077             i6400)
5078                 enable mips64r6
5079                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
5080             ;;
5081             p6600)
5082                 enable mips64r6
5083                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
5084             ;;
5085         esac
5086     else
5087         # We do not disable anything. Is up to the user to disable the unwanted features.
5088         warn 'generic cpu selected'
5089     fi
5090
5091 elif enabled ppc; then
5092
5093     disable ldbrx
5094
5095     case $(tolower $cpu) in
5096         601|ppc601|powerpc601)
5097             cpuflags="-mcpu=601"
5098             disable altivec
5099         ;;
5100         603*|ppc603*|powerpc603*)
5101             cpuflags="-mcpu=603"
5102             disable altivec
5103         ;;
5104         604*|ppc604*|powerpc604*)
5105             cpuflags="-mcpu=604"
5106             disable altivec
5107         ;;
5108         g3|75*|ppc75*|powerpc75*)
5109             cpuflags="-mcpu=750"
5110             disable altivec
5111         ;;
5112         g4|745*|ppc745*|powerpc745*)
5113             cpuflags="-mcpu=7450"
5114             disable vsx
5115         ;;
5116         74*|ppc74*|powerpc74*)
5117             cpuflags="-mcpu=7400"
5118             disable vsx
5119         ;;
5120         g5|970|ppc970|powerpc970)
5121             cpuflags="-mcpu=970"
5122             disable vsx
5123         ;;
5124         power[3-6]*)
5125             cpuflags="-mcpu=$cpu"
5126             disable vsx
5127         ;;
5128         power[7-8]*)
5129             cpuflags="-mcpu=$cpu"
5130         ;;
5131         cell)
5132             cpuflags="-mcpu=cell"
5133             enable ldbrx
5134             disable vsx
5135         ;;
5136         e500mc)
5137             cpuflags="-mcpu=e500mc"
5138             disable altivec
5139         ;;
5140         e500v2)
5141             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
5142             disable altivec
5143             disable dcbzl
5144         ;;
5145         e500)
5146             cpuflags="-mcpu=8540 -mhard-float"
5147             disable altivec
5148             disable dcbzl
5149         ;;
5150     esac
5151
5152 elif enabled sparc; then
5153
5154     case $cpu in
5155         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
5156             cpuflags="-mcpu=$cpu"
5157         ;;
5158         ultrasparc*|niagara[234])
5159             cpuflags="-mcpu=$cpu"
5160         ;;
5161     esac
5162
5163 elif enabled x86; then
5164
5165     case $cpu in
5166         i[345]86|pentium)
5167             cpuflags="-march=$cpu"
5168             disable i686
5169             disable mmx
5170         ;;
5171         # targets that do NOT support nopl and conditional mov (cmov)
5172         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
5173             cpuflags="-march=$cpu"
5174             disable i686
5175         ;;
5176         # targets that do support nopl and conditional mov (cmov)
5177         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
5178         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
5179         |amdfam10|barcelona|b[dt]ver*|znver*)
5180             cpuflags="-march=$cpu"
5181             enable i686
5182             enable fast_cmov
5183         ;;
5184         # targets that do support conditional mov but on which it's slow
5185         pentium4|pentium4m|prescott|nocona)
5186             cpuflags="-march=$cpu"
5187             enable i686
5188             disable fast_cmov
5189         ;;
5190     esac
5191
5192 fi
5193
5194 if [ "$cpu" != generic ]; then
5195     add_cflags  $cpuflags
5196     add_asflags $cpuflags
5197     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
5198 fi
5199
5200 # compiler sanity check
5201 test_exec <<EOF
5202 int main(void){ return 0; }
5203 EOF
5204 if test "$?" != 0; then
5205     echo "$cc is unable to create an executable file."
5206     if test -z "$cross_prefix" && ! enabled cross_compile ; then
5207         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
5208         echo "Only do this if you know what cross compiling means."
5209     fi
5210     die "C compiler test failed."
5211 fi
5212
5213 add_cppflags -D_ISOC99_SOURCE
5214 add_cxxflags -D__STDC_CONSTANT_MACROS
5215 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
5216
5217 # some compilers silently accept -std=c11, so we also need to check that the
5218 # version macro is defined properly
5219 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
5220     add_cflags -std=c11 ||
5221     check_cflags -std=c99
5222
5223 check_cppflags -D_FILE_OFFSET_BITS=64
5224 check_cppflags -D_LARGEFILE_SOURCE
5225
5226 add_host_cppflags -D_ISOC99_SOURCE
5227 check_host_cflags -std=c99
5228 check_host_cflags -Wall
5229 check_host_cflags $host_cflags_speed
5230
5231 check_64bit(){
5232     arch32=$1
5233     arch64=$2
5234     expr=${3:-'sizeof(void *) > 4'}
5235     test_code cc "" "int test[2*($expr) - 1]" &&
5236         subarch=$arch64 || subarch=$arch32
5237     enable $subarch
5238 }
5239
5240 case "$arch" in
5241     aarch64|alpha|ia64)
5242         enabled shared && enable_weak pic
5243     ;;
5244     mips)
5245         check_64bit mips mips64 '_MIPS_SIM > 1'
5246         enabled shared && enable_weak pic
5247     ;;
5248     parisc)
5249         check_64bit parisc parisc64
5250         enabled shared && enable_weak pic
5251     ;;
5252     ppc)
5253         check_64bit ppc ppc64
5254         enabled shared && enable_weak pic
5255     ;;
5256     s390)
5257         check_64bit s390 s390x
5258         enabled shared && enable_weak pic
5259     ;;
5260     sparc)
5261         check_64bit sparc sparc64
5262         enabled shared && enable_weak pic
5263     ;;
5264     x86)
5265         check_64bit x86_32 x86_64
5266         # Treat x32 as x64 for now. Note it also needs pic if shared
5267         test "$subarch" = "x86_32" && test_cpp_condition stddef.h 'defined(__x86_64__)' &&
5268             subarch=x86_64 && enable x86_64 && disable x86_32
5269         if enabled x86_64; then
5270             enabled shared && enable_weak pic
5271             objformat=elf64
5272         fi
5273     ;;
5274 esac
5275
5276 # OS specific
5277 case $target_os in
5278     aix)
5279         SHFLAGS=-shared
5280         add_cppflags '-I\$(SRC_PATH)/compat/aix'
5281         enabled shared && add_ldflags -Wl,-brtl
5282         arflags='-Xany -r -c'
5283         striptype=""
5284         ;;
5285     android)
5286         disable symver
5287         enable section_data_rel_ro
5288         add_cflags -fPIE
5289         add_ldexeflags -fPIE -pie
5290         SLIB_INSTALL_NAME='$(SLIBNAME)'
5291         SLIB_INSTALL_LINKS=
5292         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
5293         ;;
5294     haiku)
5295         prefix_default="/boot/common"
5296         network_extralibs="-lnetwork"
5297         host_extralibs=
5298         ;;
5299     sunos)
5300         SHFLAGS='-shared -Wl,-h,$$(@F)'
5301         enabled x86 && append SHFLAGS -mimpure-text
5302         network_extralibs="-lsocket -lnsl"
5303         add_cppflags -D__EXTENSIONS__
5304         # When using suncc to build, the Solaris linker will mark
5305         # an executable with each instruction set encountered by
5306         # the Solaris assembler.  As our libraries contain their own
5307         # guards for processor-specific code, instead suppress
5308         # generation of the HWCAPS ELF section on Solaris x86 only.
5309         enabled_all suncc x86 &&
5310             echo "hwcap_1 = OVERRIDE;" > mapfile &&
5311             add_ldflags -Wl,-M,mapfile
5312         nm_default='nm -P -g'
5313         striptype=""
5314         version_script='-M'
5315         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
5316         ;;
5317     netbsd)
5318         disable symver
5319         oss_indev_extralibs="-lossaudio"
5320         oss_outdev_extralibs="-lossaudio"
5321         enabled gcc || check_ldflags -Wl,-zmuldefs
5322         ;;
5323     openbsd|bitrig)
5324         disable symver
5325         enable section_data_rel_ro
5326         striptype=""
5327         SHFLAGS='-shared'
5328         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
5329         SLIB_INSTALL_LINKS=
5330         oss_indev_extralibs="-lossaudio"
5331         oss_outdev_extralibs="-lossaudio"
5332         ;;
5333     dragonfly)
5334         disable symver
5335         ;;
5336     freebsd)
5337         ;;
5338     bsd/os)
5339         add_extralibs -lpoll -lgnugetopt
5340         strip="strip -d"
5341         ;;
5342     darwin)
5343         enabled ppc && add_asflags -force_cpusubtype_ALL
5344         install_name_dir_default='$(SHLIBDIR)'
5345         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
5346         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
5347         strip="${strip} -x"
5348         add_ldflags -Wl,-dynamic,-search_paths_first
5349         check_cflags -Werror=partial-availability
5350         SLIBSUF=".dylib"
5351         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
5352         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
5353         enabled x86_64 && objformat="macho64" || objformat="macho32"
5354         enabled_any pic shared x86_64 ||
5355             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
5356         check_headers dispatch/dispatch.h &&
5357             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
5358         if test -n "$sysroot"; then
5359             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
5360             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
5361         fi
5362         version_script='-exported_symbols_list'
5363         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
5364         # Workaround for Xcode 11 -fstack-check bug
5365         if enabled clang; then
5366             clang_version=$($cc -dumpversion)
5367             test ${clang_version%%.*} -eq 11 && add_cflags -fno-stack-check
5368         fi
5369         ;;
5370     msys*)
5371         die "Native MSYS builds are discouraged, please use the MINGW environment."
5372         ;;
5373     mingw32*|mingw64*)
5374         target_os=mingw32
5375         LIBTARGET=i386
5376         if enabled x86_64; then
5377             LIBTARGET="i386:x86-64"
5378         elif enabled arm; then
5379             LIBTARGET="arm"
5380         elif enabled aarch64; then
5381             LIBTARGET="arm64"
5382         fi
5383         if enabled shared; then
5384             # Cannot build both shared and static libs when using dllimport.
5385             disable static
5386         fi
5387         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5388         enabled x86_32 && check_ldflags -Wl,--large-address-aware
5389         shlibdir_default="$bindir_default"
5390         SLIBPREF=""
5391         SLIBSUF=".dll"
5392         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5393         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5394         if test_cmd lib.exe -list; then
5395             SLIB_EXTRA_CMD=-'lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5396             if enabled x86_64; then
5397                 LIBTARGET=x64
5398             fi
5399         else
5400             SLIB_EXTRA_CMD=-'$(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
5401         fi
5402         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5403         SLIB_INSTALL_LINKS=
5404         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5405         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5406         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5407         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--disable-auto-image-base $$(@:$(SLIBSUF)=.def)'
5408         enabled x86_64 && objformat="win64" || objformat="win32"
5409         dlltool="${cross_prefix}dlltool"
5410         ranlib=:
5411         enable dos_paths
5412         check_ldflags -Wl,--nxcompat,--dynamicbase
5413         # Lets work around some stupidity in binutils.
5414         # ld will strip relocations from executables even though we need them
5415         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
5416         # however ld then forgets what the entry point should be (oops) so we
5417         # have to manually (re)set it.
5418         if enabled x86_32; then
5419             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
5420         elif enabled x86_64; then
5421             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
5422             check_ldflags -Wl,--high-entropy-va # binutils 2.25
5423             # Set image base >4GB for extra entropy with HEASLR
5424             add_ldexeflags -Wl,--image-base,0x140000000
5425             append SHFLAGS -Wl,--image-base,0x180000000
5426         fi
5427         ;;
5428     win32|win64)
5429         disable symver
5430         if enabled shared; then
5431             # Link to the import library instead of the normal static library
5432             # for shared libs.
5433             LD_LIB='%.lib'
5434             # Cannot build both shared and static libs with MSVC or icl.
5435             disable static
5436         fi
5437         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
5438         shlibdir_default="$bindir_default"
5439         SLIBPREF=""
5440         SLIBSUF=".dll"
5441         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5442         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5443         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5444         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5445         SLIB_INSTALL_LINKS=
5446         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5447         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5448         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5449         enabled x86_64 && objformat="win64" || objformat="win32"
5450         ranlib=:
5451         enable dos_paths
5452         ;;
5453     cygwin*)
5454         target_os=cygwin
5455         shlibdir_default="$bindir_default"
5456         SLIBPREF="cyg"
5457         SLIBSUF=".dll"
5458         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5459         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5460         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5461         SLIB_INSTALL_LINKS=
5462         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5463         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5464         enabled x86_64 && objformat="win64" || objformat="win32"
5465         enable dos_paths
5466         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5467         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5468         ;;
5469     *-dos|freedos|opendos)
5470         network_extralibs="-lsocket"
5471         objformat="coff"
5472         enable dos_paths
5473         ;;
5474     linux)
5475         enable section_data_rel_ro
5476         enabled_any arm aarch64 && enable_weak linux_perf
5477         ;;
5478     irix*)
5479         target_os=irix
5480         ranlib="echo ignoring ranlib"
5481         ;;
5482     os/2*)
5483         strip="lxlite -CS"
5484         striptype=""
5485         objformat="aout"
5486         add_cppflags -D_GNU_SOURCE
5487         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5488         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5489         LIBSUF="_s.a"
5490         SLIBPREF=""
5491         SLIBSUF=".dll"
5492         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5493         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5494         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5495             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5496             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5497             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5498             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5499         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5500             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5501         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5502         SLIB_INSTALL_LINKS=
5503         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5504         enable dos_paths
5505         enable_weak os2threads
5506         ;;
5507     gnu/kfreebsd)
5508         add_cppflags -D_BSD_SOURCE
5509         ;;
5510     gnu)
5511         ;;
5512     qnx)
5513         add_cppflags -D_QNX_SOURCE
5514         network_extralibs="-lsocket"
5515         ;;
5516     symbian)
5517         SLIBSUF=".dll"
5518         enable dos_paths
5519         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5520         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5521         add_ldflags -Wl,--target1-abs,--no-undefined \
5522                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5523                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5524         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5525                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5526                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5527         ;;
5528     minix)
5529         ;;
5530     none)
5531         ;;
5532     *)
5533         die "Unknown OS '$target_os'."
5534         ;;
5535 esac
5536
5537 # test if creating links works
5538 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5539 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5540 mkdir "$link_dest"
5541 $ln_s "$link_dest" "$link_name"
5542 touch "$link_dest/test_file"
5543 if [ "$source_path" != "." ] && [ "$source_path" != "src" ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5544     # create link to source path
5545     [ -e src ] && rm src
5546     $ln_s "$source_path" src
5547     source_link=src
5548 else
5549     # creating directory links doesn't work
5550     # fall back to using the full source path
5551     source_link="$source_path"
5552 fi
5553 # cleanup
5554 rm -r "$link_dest"
5555 rm -r "$link_name"
5556
5557 # determine libc flavour
5558
5559 probe_libc(){
5560     pfx=$1
5561     pfx_no_=${pfx%_}
5562     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5563     if test_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5564         eval ${pfx}libc_type=uclibc
5565         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5566     elif test_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5567         eval ${pfx}libc_type=glibc
5568         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5569     # MinGW headers can be installed on Cygwin, so check for newlib first.
5570     elif test_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5571         eval ${pfx}libc_type=newlib
5572         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5573     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5574     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5575         eval ${pfx}libc_type=mingw64
5576         if test_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5577             add_compat msvcrt/snprintf.o
5578             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5579         fi
5580         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5581         eval test \$${pfx_no_}cc_type = "gcc" &&
5582             add_${pfx}cppflags -D__printf__=__gnu_printf__
5583         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5584             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5585         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5586     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5587          test_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5588         eval ${pfx}libc_type=mingw32
5589         test_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5590             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5591             die "ERROR: MinGW32 runtime version must be >= 3.15."
5592         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5593         test_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5594             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5595         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5596             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5597         eval test \$${pfx_no_}cc_type = "gcc" &&
5598             add_${pfx}cppflags -D__printf__=__gnu_printf__
5599         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5600     elif test_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5601         eval ${pfx}libc_type=msvcrt
5602         if test_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5603             if [ "$pfx" = host_ ]; then
5604                 add_host_cppflags -Dsnprintf=_snprintf
5605             else
5606                 add_compat strtod.o strtod=avpriv_strtod
5607                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5608                                              _snprintf=avpriv_snprintf  \
5609                                              vsnprintf=avpriv_vsnprintf
5610             fi
5611         fi
5612         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5613         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5614         # 0x601 by default unless something else is set by the user.
5615         # This can easily lead to us detecting functions only present
5616         # in such new versions and producing binaries requiring windows 7.0.
5617         # Therefore explicitly set the default to Vista unless the user has
5618         # set something else on the command line.
5619         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5620         # family. For these cases, configure is free to use any functions
5621         # found in the SDK headers by default. (Alternatively, we could force
5622         # _WIN32_WINNT to 0x0602 in that case.)
5623         test_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5624             { test_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0600; }
5625 #ifdef WINAPI_FAMILY
5626 #include <winapifamily.h>
5627 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5628 #error not desktop
5629 #endif
5630 #endif
5631 EOF
5632         if [ "$pfx" = "" ]; then
5633             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5634             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5635         fi
5636     elif test_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5637         eval ${pfx}libc_type=klibc
5638     elif test_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5639         eval ${pfx}libc_type=bionic
5640     elif test_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5641         eval ${pfx}libc_type=solaris
5642         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5643     elif test_${pfx}cpp_condition sys/version.h "defined __DJGPP__"; then
5644         eval ${pfx}libc_type=djgpp
5645         add_cppflags -U__STRICT_ANSI__
5646         add_cflags "-include $source_path/compat/djgpp/math.h"
5647         add_compat djgpp/math.o
5648     fi
5649     test_${pfx}cc <<EOF
5650 #include <time.h>
5651 void *v = localtime_r;
5652 EOF
5653 test "$?" != 0 && test_${pfx}cc -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 <<EOF && add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5654 #include <time.h>
5655 void *v = localtime_r;
5656 EOF
5657
5658     eval test -n "\${${pfx}libc_type}" && enable ${pfx}libc_${libc_type}
5659 }
5660
5661 probe_libc
5662 probe_libc host_
5663
5664 # hacks for compiler/libc/os combinations
5665
5666 case $libc_type in
5667     bionic)
5668         add_compat strtod.o strtod=avpriv_strtod
5669         ;;
5670 esac
5671
5672 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5673     add_cppflags '-I\$(SRC_PATH)/compat/float'
5674
5675 test_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5676
5677 set_default libdir
5678 : ${shlibdir_default:="$libdir"}
5679 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5680
5681 set_default $PATHS_LIST
5682 set_default nm
5683
5684 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5685
5686 enable_weak_pic() {
5687     disabled pic && return
5688     enable pic
5689     add_cppflags -DPIC
5690     case "$target_os" in
5691     mingw*|cygwin*|win*)
5692         ;;
5693     *)
5694         add_cflags -fPIC
5695         add_asflags -fPIC
5696         ;;
5697     esac
5698 }
5699
5700 enabled pic && enable_weak_pic
5701
5702 test_cc <<EOF || die "Symbol mangling check failed."
5703 int ff_extern;
5704 EOF
5705 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5706 extern_prefix=${sym%%ff_extern*}
5707
5708 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
5709
5710 for restrict_keyword in restrict __restrict__ __restrict ""; do
5711     test_code cc "" "char * $restrict_keyword p" && break
5712 done
5713
5714 check_cc pragma_deprecated "" '_Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"")'
5715
5716 # The global variable ensures the bits appear unchanged in the object file.
5717 test_cc <<EOF || die "endian test failed"
5718 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5719 EOF
5720 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5721
5722 check_cc const_nan math.h "struct { double d; } static const bar[] = { { NAN } }"
5723
5724 if ! enabled ppc64 || enabled bigendian; then
5725     disable vsx
5726 fi
5727
5728 check_gas() {
5729     log "check_gas using '$as' as AS"
5730     # :vararg is used on aarch64, arm and ppc altivec
5731     check_as vararg "
5732 .macro m n, y:vararg=0
5733 \n: .int \y
5734 .endm
5735 m x" || return 1
5736     # .altmacro is only used in arm asm
5737     ! enabled arm || check_as gnu_as ".altmacro"
5738 }
5739
5740 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5741     nogas=:
5742     enabled_any arm aarch64 && nogas=die
5743     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5744     as_noop=-v
5745
5746     case $as_type in
5747         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5748         gcc)  gaspp_as_type=gas ;;
5749         *)    gaspp_as_type=$as_type ;;
5750     esac
5751
5752     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5753
5754     test "${as#*gas-preprocessor.pl}" != "$as" ||
5755     test_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5756         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5757
5758     if ! check_gas ; then
5759         as=${gas:=$as}
5760         check_gas || \
5761             $nogas "GNU assembler not found, install/update gas-preprocessor"
5762     fi
5763
5764     check_as as_func ".func test
5765                       .endfunc"
5766 fi
5767
5768 check_inline_asm inline_asm_labels '"1:\n"'
5769
5770 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5771
5772 if enabled aarch64; then
5773     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5774     # internal assembler in clang 3.3 does not support this instruction
5775     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5776     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5777
5778     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5779
5780 elif enabled alpha; then
5781
5782     check_cflags -mieee
5783
5784 elif enabled arm; then
5785
5786     enabled msvc && check_cpp_condition thumb stddef.h "defined _M_ARMT"
5787     test_cpp_condition stddef.h "defined __thumb__" && test_cc <<EOF && enable_weak thumb
5788 float func(float a, float b){ return a+b; }
5789 EOF
5790     enabled thumb && check_cflags -mthumb || check_cflags -marm
5791
5792     if check_cpp_condition vfp_args stddef.h "defined __ARM_PCS_VFP"; then
5793         :
5794     elif check_cpp_condition vfp_args stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5795         :
5796     elif ! test_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5797         case "${cross_prefix:-$cc}" in
5798             *hardfloat*) enable vfp_args; fpabi=vfp ;;
5799             *) check_ld "cc" vfp_args <<EOF && fpabi=vfp || fpabi=soft ;;
5800 __asm__ (".eabi_attribute 28, 1");
5801 int main(void) { return 0; }
5802 EOF
5803         esac
5804         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5805     fi
5806
5807     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5808     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5809     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5810     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5811     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5812     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5813     enabled setend  && check_insn setend  'setend be'
5814
5815     [ $target_os = linux ] || [ $target_os = android ] ||
5816         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5817             $ARCH_EXT_LIST_ARM
5818
5819     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5820
5821     check_as as_arch_directive ".arch armv7-a"
5822     check_as as_dn_directive   "ra .dn d0.i16"
5823     check_as as_fpu_directive  ".fpu neon"
5824
5825     # llvm's integrated assembler supports .object_arch from llvm 3.5
5826     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5827         check_as as_object_arch ".object_arch armv4"
5828
5829     # MS armasm fails to assemble our PIC constructs
5830     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5831
5832 elif enabled mips; then
5833
5834     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5835     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5836     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5837
5838     # Enable minimum ISA based on selected options
5839     if enabled mips64; then
5840         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5841         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5842         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5843     else
5844         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5845         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5846         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5847         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5848     fi
5849
5850     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5851     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5852     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_headers msa.h || disable msa
5853     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5854     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5855     enabled msa && enabled msa2 && check_inline_asm_flags msa2 '"nxbits.any.b $w0, $w0"' '-mmsa2' && check_headers msa2.h || disable msa2
5856
5857     if enabled bigendian && enabled msa; then
5858         disable msa
5859     fi
5860
5861 elif enabled parisc; then
5862
5863     if enabled gcc; then
5864         case $($cc -dumpversion) in
5865             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5866         esac
5867     fi
5868
5869 elif enabled ppc; then
5870
5871     enable local_aligned
5872
5873     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5874     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5875     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5876     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5877
5878     if enabled altivec; then
5879         check_cflags -maltivec -mabi=altivec
5880
5881         # check if our compiler supports Motorola AltiVec C API
5882         check_cc altivec altivec.h "vector signed int v1 = (vector signed int) { 0 };
5883                                     vector signed int v2 = (vector signed int) { 1 };
5884                                     v1 = vec_add(v1, v2);"
5885
5886         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5887     fi
5888
5889     if enabled vsx; then
5890         check_cflags -mvsx &&
5891         check_cc vsx altivec.h "int v[4] = { 0 };
5892                                 vector signed int v1 = vec_vsx_ld(0, v);"
5893     fi
5894
5895     if enabled power8; then
5896         check_cpp_condition power8 "altivec.h" "defined(_ARCH_PWR8)"
5897     fi
5898
5899 elif enabled x86; then
5900
5901     check_builtin rdtsc    intrin.h   "__rdtsc()"
5902     check_builtin mm_empty mmintrin.h "_mm_empty()"
5903
5904     enable local_aligned
5905
5906     # check whether EBP is available on x86
5907     # As 'i' is stored on the stack, this program will crash
5908     # if the base pointer is used to access it because the
5909     # base pointer is cleared in the inline assembly code.
5910     check_exec_crash <<EOF && enable ebp_available
5911 volatile int i=0;
5912 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5913 return i;
5914 EOF
5915
5916     # check whether EBX is available on x86
5917     check_inline_asm ebx_available '""::"b"(0)' &&
5918         check_inline_asm ebx_available '"":::"%ebx"'
5919
5920     # check whether xmm clobbers are supported
5921     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5922
5923     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5924         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5925
5926     # check whether binutils is new enough to compile SSSE3/MMXEXT
5927     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5928     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5929
5930     probe_x86asm(){
5931         x86asmexe_probe=$1
5932         if test_cmd $x86asmexe_probe -v; then
5933             x86asmexe=$x86asmexe_probe
5934             x86asm_type=nasm
5935             x86asm_debug="-g -F dwarf"
5936             X86ASMDEP=
5937             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5938         elif test_cmd $x86asmexe_probe --version; then
5939             x86asmexe=$x86asmexe_probe
5940             x86asm_type=yasm
5941             x86asm_debug="-g dwarf2"
5942             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
5943             X86ASM_DEPFLAGS=
5944         fi
5945         check_x86asm x86asm "movbe ecx, [5]"
5946     }
5947
5948     if ! disabled_any asm mmx x86asm; then
5949         disable x86asm
5950         for program in $x86asmexe nasm yasm; do
5951             probe_x86asm $program && break
5952         done
5953         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
5954         X86ASMFLAGS="-f $objformat"
5955         enabled pic               && append X86ASMFLAGS "-DPIC"
5956         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
5957         case "$objformat" in
5958             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
5959         esac
5960
5961         enabled avx512 && check_x86asm avx512_external "vmovdqa32 [eax]{k1}{z}, zmm0"
5962         enabled avx2   && check_x86asm avx2_external   "vextracti128 xmm0, ymm0, 0"
5963         enabled xop    && check_x86asm xop_external    "vpmacsdd xmm0, xmm1, xmm2, xmm3"
5964         enabled fma4   && check_x86asm fma4_external   "vfmaddps ymm0, ymm1, ymm2, ymm3"
5965         check_x86asm cpunop          "CPU amdnop"
5966     fi
5967
5968     case "$cpu" in
5969         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5970             disable fast_clz
5971         ;;
5972     esac
5973
5974 fi
5975
5976 check_cc intrinsics_neon arm_neon.h "int16x8_t test = vdupq_n_s16(0)"
5977
5978 check_ldflags -Wl,--as-needed
5979 check_ldflags -Wl,-z,noexecstack
5980
5981 if ! disabled network; then
5982     check_func getaddrinfo $network_extralibs
5983     check_func inet_aton $network_extralibs
5984
5985     check_type netdb.h "struct addrinfo"
5986     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5987     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5988     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5989     check_type poll.h "struct pollfd"
5990     check_type netinet/sctp.h "struct sctp_event_subscribe"
5991     check_struct "sys/socket.h" "struct msghdr" msg_flags
5992     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5993     check_type netinet/in.h "struct sockaddr_in6"
5994     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5995     check_type "sys/types.h sys/socket.h" socklen_t
5996
5997     # Prefer arpa/inet.h over winsock2
5998     if check_headers arpa/inet.h ; then
5999         check_func closesocket
6000     elif check_headers winsock2.h ; then
6001         check_func_headers winsock2.h closesocket -lws2 &&
6002             network_extralibs="-lws2" ||
6003         { check_func_headers winsock2.h closesocket -lws2_32 &&
6004             network_extralibs="-lws2_32"; } || disable winsock2_h network
6005         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
6006
6007         check_type ws2tcpip.h socklen_t
6008         check_type ws2tcpip.h "struct addrinfo"
6009         check_type ws2tcpip.h "struct group_source_req"
6010         check_type ws2tcpip.h "struct ip_mreq_source"
6011         check_type ws2tcpip.h "struct ipv6_mreq"
6012         check_type winsock2.h "struct pollfd"
6013         check_struct winsock2.h "struct sockaddr" sa_len
6014         check_type ws2tcpip.h "struct sockaddr_in6"
6015         check_type ws2tcpip.h "struct sockaddr_storage"
6016     else
6017         disable network
6018     fi
6019 fi
6020
6021 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
6022 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
6023 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
6024 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
6025 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
6026 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
6027 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
6028
6029 case "$custom_allocator" in
6030     jemalloc)
6031         # jemalloc by default does not use a prefix
6032         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
6033     ;;
6034     tcmalloc)
6035         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
6036         malloc_prefix=tc_
6037     ;;
6038 esac
6039
6040 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
6041 check_func  ${malloc_prefix}memalign            && enable memalign
6042 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
6043
6044 check_func  access
6045 check_func_headers stdlib.h arc4random
6046 check_lib   clock_gettime time.h clock_gettime || check_lib clock_gettime time.h clock_gettime -lrt
6047 check_func  fcntl
6048 check_func  fork
6049 check_func  gethrtime
6050 check_func  getopt
6051 check_func  getrusage
6052 check_func  gettimeofday
6053 check_func  isatty
6054 check_func  mkstemp
6055 check_func  mmap
6056 check_func  mprotect
6057 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
6058 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
6059 check_func  sched_getaffinity
6060 check_func  setrlimit
6061 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
6062 check_func  strerror_r
6063 check_func  sysconf
6064 check_func  sysctl
6065 check_func  usleep
6066
6067 check_func_headers conio.h kbhit
6068 check_func_headers io.h setmode
6069 check_func_headers lzo/lzo1x.h lzo1x_999_compress
6070 check_func_headers mach/mach_time.h mach_absolute_time
6071 check_func_headers stdlib.h getenv
6072 check_func_headers sys/stat.h lstat
6073
6074 check_func_headers windows.h GetModuleHandle
6075 check_func_headers windows.h GetProcessAffinityMask
6076 check_func_headers windows.h GetProcessTimes
6077 check_func_headers windows.h GetStdHandle
6078 check_func_headers windows.h GetSystemTimeAsFileTime
6079 check_func_headers windows.h LoadLibrary
6080 check_func_headers windows.h MapViewOfFile
6081 check_func_headers windows.h PeekNamedPipe
6082 check_func_headers windows.h SetConsoleTextAttribute
6083 check_func_headers windows.h SetConsoleCtrlHandler
6084 check_func_headers windows.h SetDllDirectory
6085 check_func_headers windows.h Sleep
6086 check_func_headers windows.h VirtualAlloc
6087 check_func_headers glob.h glob
6088 enabled xlib &&
6089     check_lib xlib "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
6090
6091 check_headers direct.h
6092 check_headers dirent.h
6093 check_headers dxgidebug.h
6094 check_headers dxva.h
6095 check_headers dxva2api.h -D_WIN32_WINNT=0x0600
6096 check_headers io.h
6097 check_headers linux/perf_event.h
6098 check_headers libcrystalhd/libcrystalhd_if.h
6099 check_headers malloc.h
6100 check_headers net/udplite.h
6101 check_headers poll.h
6102 check_headers sys/param.h
6103 check_headers sys/resource.h
6104 check_headers sys/select.h
6105 check_headers sys/time.h
6106 check_headers sys/un.h
6107 check_headers termios.h
6108 check_headers unistd.h
6109 check_headers valgrind/valgrind.h
6110 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
6111 check_headers windows.h
6112 check_headers X11/extensions/XvMClib.h
6113 check_headers asm/types.h
6114
6115 # it seems there are versions of clang in some distros that try to use the
6116 # gcc headers, which explodes for stdatomic
6117 # so we also check that atomics actually work here
6118 check_builtin stdatomic stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0); foo += bar"
6119
6120 check_lib advapi32 "windows.h"            RegCloseKey          -ladvapi32
6121 check_lib bcrypt   "windows.h bcrypt.h"   BCryptGenRandom      -lbcrypt &&
6122     check_cpp_condition bcrypt bcrypt.h "defined BCRYPT_RNG_ALGORITHM"
6123 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
6124 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
6125 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
6126
6127 check_lib android android/native_window.h ANativeWindow_acquire -landroid
6128 check_lib mediandk "stdint.h media/NdkImage.h" AImage_delete -lmediandk
6129 check_lib camera2ndk "stdbool.h stdint.h camera/NdkCameraManager.h" ACameraManager_create -lcamera2ndk
6130
6131 enabled appkit       && check_apple_framework AppKit
6132 enabled audiotoolbox && check_apple_framework AudioToolbox
6133 enabled avfoundation && check_apple_framework AVFoundation
6134 enabled coreimage    && check_apple_framework CoreImage
6135 enabled videotoolbox && check_apple_framework VideoToolbox
6136
6137 check_apple_framework CoreFoundation
6138 check_apple_framework CoreMedia
6139 check_apple_framework CoreVideo
6140
6141 enabled avfoundation && {
6142     disable coregraphics applicationservices
6143     check_lib coregraphics        CoreGraphics/CoreGraphics.h               CGGetActiveDisplayList "-framework CoreGraphics" ||
6144     check_lib applicationservices ApplicationServices/ApplicationServices.h CGGetActiveDisplayList "-framework ApplicationServices"; }
6145
6146 enabled videotoolbox && {
6147     check_lib coreservices CoreServices/CoreServices.h UTGetOSTypeFromString "-framework CoreServices"
6148     check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_HEVC "-framework CoreMedia"
6149     check_func_headers CoreVideo/CVPixelBuffer.h kCVPixelFormatType_420YpCbCr10BiPlanarVideoRange "-framework CoreVideo"
6150     check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferTransferFunction_SMPTE_ST_2084_PQ "-framework CoreVideo"
6151     check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferTransferFunction_ITU_R_2100_HLG "-framework CoreVideo"
6152     check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferTransferFunction_Linear "-framework CoreVideo"
6153 }
6154
6155 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
6156
6157 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
6158 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
6159 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
6160 check_type "windows.h d3d11.h" "ID3D11VideoContext"
6161 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
6162
6163 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
6164 check_type "vdpau/vdpau.h" "VdpPictureInfoVP9"
6165
6166 if [ -z "$nvccflags" ]; then
6167     nvccflags=$nvccflags_default
6168 fi
6169
6170 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6171     nvccflags="$nvccflags -m64"
6172 else
6173     nvccflags="$nvccflags -m32"
6174 fi
6175
6176 if enabled cuda_nvcc; then
6177     nvccflags="$nvccflags -ptx"
6178 else
6179     nvccflags="$nvccflags -S -nocudalib -nocudainc --cuda-device-only -include ${source_link}/compat/cuda/cuda_runtime.h"
6180     check_nvcc cuda_llvm
6181 fi
6182
6183 if ! disabled ffnvcodec; then
6184     ffnv_hdr_list="ffnvcodec/nvEncodeAPI.h ffnvcodec/dynlink_cuda.h ffnvcodec/dynlink_cuviddec.h ffnvcodec/dynlink_nvcuvid.h"
6185     check_pkg_config ffnvcodec "ffnvcodec >= 9.1.23.1" "$ffnv_hdr_list" "" || \
6186       check_pkg_config ffnvcodec "ffnvcodec >= 9.0.18.3 ffnvcodec < 9.1" "$ffnv_hdr_list" "" || \
6187       check_pkg_config ffnvcodec "ffnvcodec >= 8.2.15.10 ffnvcodec < 8.3" "$ffnv_hdr_list" "" || \
6188       check_pkg_config ffnvcodec "ffnvcodec >= 8.1.24.11 ffnvcodec < 8.2" "$ffnv_hdr_list" ""
6189 fi
6190
6191 check_cpp_condition winrt windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)"
6192
6193 if ! disabled w32threads && ! enabled pthreads; then
6194     check_func_headers "windows.h process.h" _beginthreadex &&
6195         check_type "windows.h" CONDITION_VARIABLE &&
6196         check_type "windows.h" INIT_ONCE &&
6197         enable w32threads || disable w32threads
6198     if ! enabled w32threads && enabled winrt; then
6199         check_func_headers "windows.h" CreateThread &&
6200             enable w32threads || disable w32threads
6201     fi
6202 fi
6203
6204 # check for some common methods of building with pthread support
6205 # do this before the optional library checks as some of them require pthreads
6206 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
6207     if check_lib pthreads pthread.h pthread_join   -pthread &&
6208        check_lib pthreads pthread.h pthread_create -pthread; then
6209         add_cflags -pthread
6210     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
6211          check_lib pthreads pthread.h pthread_create -pthreads; then
6212         add_cflags -pthreads
6213     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
6214          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
6215         add_cflags -ldl -pthread
6216     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
6217          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
6218         :
6219     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
6220          check_lib pthreads pthread.h pthread_create -lpthread; then
6221         :
6222     elif check_func pthread_join && check_func pthread_create; then
6223         enable pthreads
6224     fi
6225     check_cc pthreads "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER"
6226
6227     if enabled pthreads; then
6228         check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
6229         check_func pthread_cancel $pthreads_extralibs
6230     fi
6231 fi
6232
6233 enabled  zlib && { check_pkg_config zlib zlib "zlib.h" zlibVersion ||
6234                    check_lib zlib   zlib.h      zlibVersion    -lz; }
6235 enabled bzlib && check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
6236 enabled  lzma && check_lib lzma   lzma.h lzma_version_number -llzma
6237
6238 # On some systems dynamic loading requires no extra linker flags
6239 check_lib libdl dlfcn.h "dlopen dlsym" || check_lib libdl dlfcn.h "dlopen dlsym" -ldl
6240
6241 check_lib libm math.h sin -lm
6242
6243 atan2f_args=2
6244 copysign_args=2
6245 hypot_args=2
6246 ldexpf_args=2
6247 powf_args=2
6248
6249 for func in $MATH_FUNCS; do
6250     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
6251 done
6252
6253 for func in $COMPLEX_FUNCS; do
6254     eval check_complexfunc $func \${${func}_args:-1}
6255 done
6256
6257 # these are off by default, so fail if requested and not available
6258 enabled avisynth          && require_headers "avisynth/avisynth_c.h"
6259 enabled cuda_nvcc         && { check_nvcc cuda_nvcc || die "ERROR: failed checking for nvcc."; }
6260 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
6261 enabled decklink          && { require_headers DeckLinkAPI.h &&
6262                                { test_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a090500" || die "ERROR: Decklink API version must be >= 10.9.5."; } }
6263 enabled frei0r            && require_headers "frei0r.h dlfcn.h"
6264 enabled gmp               && require gmp gmp.h mpz_export -lgmp
6265 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
6266 enabled jni               && { [ $target_os = "android" ] && check_headers jni.h && enabled pthreads || die "ERROR: jni not found"; }
6267 enabled ladspa            && require_headers "ladspa.h dlfcn.h"
6268 enabled libaom            && require_pkg_config libaom "aom >= 1.0.0" aom/aom_codec.h aom_codec_version
6269 enabled libaribb24        && { check_pkg_config libaribb24 "aribb24 > 1.0.3" "aribb24/aribb24.h" arib_instance_new ||
6270                                { enabled gpl && require_pkg_config libaribb24 aribb24 "aribb24/aribb24.h" arib_instance_new; } ||
6271                                die "ERROR: libaribb24 requires version higher than 1.0.3 or --enable-gpl."; }
6272 enabled lv2               && require_pkg_config lv2 lilv-0 "lilv/lilv.h" lilv_world_new
6273 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
6274 enabled libass            && require_pkg_config libass libass ass/ass.h ass_library_init
6275 enabled libbluray         && require_pkg_config libbluray libbluray libbluray/bluray.h bd_open
6276 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
6277 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
6278                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
6279                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
6280 enabled libcaca           && require_pkg_config libcaca caca caca.h caca_create_canvas
6281 enabled libcodec2         && require libcodec2 codec2/codec2.h codec2_create -lcodec2
6282 enabled libdav1d          && require_pkg_config libdav1d "dav1d >= 0.4.0" "dav1d/dav1d.h" dav1d_version
6283 enabled libdavs2          && require_pkg_config libdavs2 "davs2 >= 1.6.0" davs2.h davs2_decoder_open
6284 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
6285 enabled libdrm            && require_pkg_config libdrm libdrm xf86drm.h drmGetVersion
6286 enabled libfdk_aac        && { check_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
6287                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
6288                                  warn "using libfdk without pkg-config"; } }
6289 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"
6290 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
6291 enabled fontconfig        && enable libfontconfig
6292 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
6293 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
6294 enabled libfribidi        && require_pkg_config libfribidi fribidi fribidi.h fribidi_version_info
6295 enabled libglslang        && require_cpp libglslang glslang/SPIRV/GlslangToSpv.h "glslang::TIntermediate*" -lglslang -lOSDependent -lHLSL -lOGLCompiler -lSPVRemapper -lSPIRV -lSPIRV-Tools-opt -lSPIRV-Tools -lpthread -lstdc++
6296 enabled libgme            && { check_pkg_config libgme libgme gme/gme.h gme_new_emu ||
6297                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }
6298 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
6299                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
6300                                done || die "ERROR: libgsm not found"; }
6301 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc $pthreads_extralibs
6302 enabled libklvanc         && require libklvanc libklvanc/vanc.h klvanc_context_create -lklvanc
6303 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
6304 enabled liblensfun        && require_pkg_config liblensfun lensfun lensfun.h lf_db_new
6305 # While it may appear that require is being used as a pkg-config
6306 # fallback for libmfx, it is actually being used to detect a different
6307 # installation route altogether.  If libmfx is installed via the Intel
6308 # Media SDK or Intel Media Server Studio, these don't come with
6309 # pkg-config support.  Instead, users should make sure that the build
6310 # can find the libraries and headers through other means.
6311 enabled libmfx            && { check_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit ||
6312                                { require libmfx "mfx/mfxvideo.h" MFXInit "-llibmfx $advapi32_extralibs" && warn "using libmfx without pkg-config"; } }
6313 if enabled libmfx; then
6314    check_cc MFX_CODEC_VP9 "mfx/mfxvp9.h mfx/mfxstructures.h" "MFX_CODEC_VP9"
6315 fi
6316
6317 enabled libmodplug        && require_pkg_config libmodplug libmodplug libmodplug/modplug.h ModPlug_Load
6318 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame $libm_extralibs
6319 enabled libmysofa         && { check_pkg_config libmysofa libmysofa mysofa.h mysofa_neighborhood_init_withstepdefine ||
6320                                require libmysofa mysofa.h mysofa_neighborhood_init_withstepdefine -lmysofa $zlib_extralibs; }
6321 enabled libnpp            && { check_lib libnpp npp.h nppGetLibVersion -lnppig -lnppicc -lnppc -lnppidei ||
6322                                check_lib libnpp npp.h nppGetLibVersion -lnppi -lnppc -lnppidei ||
6323                                die "ERROR: libnpp not found"; }
6324 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
6325 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
6326 enabled libopencv         && { check_headers opencv2/core/core_c.h &&
6327                                { check_pkg_config libopencv opencv opencv2/core/core_c.h cvCreateImageHeader ||
6328                                  require libopencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
6329                                require_pkg_config libopencv opencv opencv/cxcore.h cvCreateImageHeader; }
6330 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
6331 enabled libopenjpeg       && { check_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version ||
6332                                { require_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } }
6333 enabled libopenmpt        && require_pkg_config libopenmpt "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create -lstdc++ && append libopenmpt_extralibs "-lstdc++"
6334 enabled libopus           && {
6335     enabled libopus_decoder && {
6336         require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
6337     }
6338     enabled libopus_encoder && {
6339         require_pkg_config libopus opus opus_multistream.h opus_multistream_surround_encoder_create
6340     }
6341 }
6342 enabled libpulse          && require_pkg_config libpulse libpulse pulse/pulseaudio.h pa_context_new
6343 enabled librabbitmq       && require_pkg_config librabbitmq "librabbitmq >= 0.7.1" amqp.h amqp_new_connection
6344 enabled librav1e          && require_pkg_config librav1e "rav1e >= 0.1.0" rav1e.h rav1e_context_new
6345 enabled librsvg           && require_pkg_config librsvg librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
6346 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
6347 enabled librubberband     && require_pkg_config librubberband "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new -lstdc++ && append librubberband_extralibs "-lstdc++"
6348 enabled libshine          && require_pkg_config libshine shine shine/layer3.h shine_encode_buffer
6349 enabled libsmbclient      && { check_pkg_config libsmbclient smbclient libsmbclient.h smbc_init ||
6350                                require libsmbclient libsmbclient.h smbc_init -lsmbclient; }
6351 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy -lstdc++
6352 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
6353 enabled libssh            && require_pkg_config libssh libssh libssh/sftp.h sftp_init
6354 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init
6355 enabled libsrt            && require_pkg_config libsrt "srt >= 1.3.0" srt/srt.h srt_socket
6356 enabled libtensorflow     && require libtensorflow tensorflow/c/c_api.h TF_Version -ltensorflow
6357 enabled libtesseract      && require_pkg_config libtesseract tesseract tesseract/capi.h TessBaseAPICreate
6358 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
6359 enabled libtls            && require_pkg_config libtls libtls tls.h tls_configure
6360 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
6361                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
6362                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
6363 enabled libv4l2           && require_pkg_config libv4l2 libv4l2 libv4l2.h v4l2_ioctl
6364 enabled libvidstab        && require_pkg_config libvidstab "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
6365 enabled libvmaf           && require_pkg_config libvmaf "libvmaf >= 1.3.9" libvmaf.h compute_vmaf
6366 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
6367 enabled libvorbis         && require_pkg_config libvorbis vorbis vorbis/codec.h vorbis_info_init &&
6368                              require_pkg_config libvorbisenc vorbisenc vorbis/vorbisenc.h vorbis_encode_init
6369
6370 enabled libvpx            && {
6371     enabled libvpx_vp8_decoder && {
6372         check_pkg_config libvpx_vp8_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
6373             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"
6374     }
6375     enabled libvpx_vp8_encoder && {
6376         check_pkg_config libvpx_vp8_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
6377             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"
6378     }
6379     enabled libvpx_vp9_decoder && {
6380         check_pkg_config libvpx_vp9_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
6381             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"
6382     }
6383     enabled libvpx_vp9_encoder && {
6384         check_pkg_config libvpx_vp9_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
6385             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"
6386     }
6387     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
6388         die "libvpx enabled but no supported decoders found"
6389     fi
6390 }
6391
6392 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
6393 enabled libwebp           && {
6394     enabled libwebp_encoder      && require_pkg_config libwebp "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
6395     enabled libwebp_anim_encoder && check_pkg_config libwebp_anim_encoder "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit; }
6396 enabled libx264           && { check_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode ||
6397                                { require libx264 "stdint.h x264.h" x264_encoder_encode "-lx264 $pthreads_extralibs $libm_extralibs" &&
6398                                  warn "using libx264 without pkg-config"; } } &&
6399                              require_cpp_condition libx264 x264.h "X264_BUILD >= 118" &&
6400                              check_cpp_condition libx262 x264.h "X264_MPEG2"
6401 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
6402                              require_cpp_condition libx265 x265.h "X265_BUILD >= 70"
6403 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode "-lxavs $pthreads_extralibs $libm_extralibs"
6404 enabled libxavs2          && require_pkg_config libxavs2 "xavs2 >= 1.3.0" "stdint.h xavs2.h" xavs2_api_get
6405 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
6406 enabled libzimg           && require_pkg_config libzimg "zimg >= 2.7.0" zimg.h zimg_get_api_version
6407 enabled libzmq            && require_pkg_config libzmq "libzmq >= 4.2.1" zmq.h zmq_ctx_new
6408 enabled libzvbi           && require_pkg_config libzvbi zvbi-0.2 libzvbi.h vbi_decoder_new &&
6409                              { test_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
6410                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
6411 enabled libxml2           && require_pkg_config libxml2 libxml-2.0 libxml2/libxml/xmlversion.h xmlCheckVersion
6412 enabled mbedtls           && { check_pkg_config mbedtls mbedtls mbedtls/x509_crt.h mbedtls_x509_crt_init ||
6413                                check_pkg_config mbedtls mbedtls mbedtls/ssl.h mbedtls_ssl_init ||
6414                                check_lib mbedtls mbedtls/ssl.h mbedtls_ssl_init -lmbedtls -lmbedx509 -lmbedcrypto ||
6415                                die "ERROR: mbedTLS not found"; }
6416 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
6417 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
6418                                { ! enabled cross_compile &&
6419                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
6420                                  add_ldflags -L/opt/vc/lib/ &&
6421                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
6422                                die "ERROR: mmal not found" &&
6423                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
6424 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
6425                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
6426                                die "ERROR: openal not found"; } &&
6427                              { test_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
6428                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
6429 enabled opencl            && { check_pkg_config opencl OpenCL CL/cl.h clEnqueueNDRangeKernel ||
6430                                check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
6431                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
6432                                die "ERROR: opencl not found"; } &&
6433                              { test_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
6434                                test_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
6435                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
6436 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
6437                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
6438                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
6439                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
6440                                die "ERROR: opengl not found."
6441                              }
6442 enabled omx_rpi           && { test_code cc OMX_Core.h OMX_IndexConfigBrcmVideoRequestIFrame ||
6443                                { ! enabled cross_compile &&
6444                                  add_cflags -isystem/opt/vc/include/IL &&
6445                                  test_code cc OMX_Core.h OMX_IndexConfigBrcmVideoRequestIFrame; } ||
6446                                die "ERROR: OpenMAX IL headers from raspberrypi/firmware not found"; } &&
6447                              enable omx
6448 enabled omx               && require_headers OMX_Core.h
6449 enabled openssl           && { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
6450                                check_pkg_config openssl openssl openssl/ssl.h SSL_library_init ||
6451                                check_lib openssl openssl/ssl.h OPENSSL_init_ssl -lssl -lcrypto ||
6452                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
6453                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
6454                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
6455                                die "ERROR: openssl not found"; }
6456 enabled pocketsphinx      && require_pkg_config pocketsphinx pocketsphinx pocketsphinx/pocketsphinx.h ps_init
6457 enabled rkmpp             && { require_pkg_config rkmpp rockchip_mpp  rockchip/rk_mpi.h mpp_create &&
6458                                require_pkg_config rockchip_mpp "rockchip_mpp >= 1.3.7" rockchip/rk_mpi.h mpp_create &&
6459                                { enabled libdrm ||
6460                                  die "ERROR: rkmpp requires --enable-libdrm"; }
6461                              }
6462 enabled vapoursynth       && require_pkg_config vapoursynth "vapoursynth-script >= 42" VSScript.h vsscript_init
6463
6464
6465 if enabled gcrypt; then
6466     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
6467     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
6468         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
6469         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
6470         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
6471             die "ERROR: gcrypt not found"
6472         add_cflags $gcrypt_cflags
6473     else
6474         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
6475     fi
6476 fi
6477
6478 if enabled sdl2; then
6479     SDL2_CONFIG="${cross_prefix}sdl2-config"
6480     test_pkg_config sdl2 "sdl2 >= 2.0.1 sdl2 < 2.1.0" SDL_events.h SDL_PollEvent
6481     if disabled sdl2 && "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6482         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6483         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6484         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6485         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6486         check_func_headers SDL_events.h SDL_PollEvent $sdl2_extralibs $sdl2_cflags &&
6487             enable sdl2
6488     fi
6489     if test $target_os = "mingw32"; then
6490         sdl2_extralibs=$(filter_out '-mwindows' $sdl2_extralibs)
6491     fi
6492 fi
6493
6494 if enabled decklink; then
6495     case $target_os in
6496         mingw32*|mingw64*|win32|win64)
6497             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6498             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6499             ;;
6500     esac
6501 fi
6502
6503 enabled securetransport &&
6504     check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6505     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" ||
6506         disable securetransport
6507
6508 enabled securetransport &&
6509     check_func SecItemImport "-Wl,-framework,CoreFoundation -Wl,-framework,Security"
6510
6511 enabled schannel &&
6512     check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6513     test_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" &&
6514     schannel_extralibs="-lsecur32" ||
6515         disable schannel
6516
6517 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6518 enabled makeinfo \
6519     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6520     && enable makeinfo_html || disable makeinfo_html
6521 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6522 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6523 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6524 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6525
6526 # check V4L2 codecs available in the API
6527 if enabled v4l2_m2m; then
6528     check_headers linux/fb.h
6529     check_headers linux/videodev2.h
6530     test_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6531     check_cc v4l2_m2m linux/videodev2.h "int i = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_VIDEO_M2M | V4L2_BUF_FLAG_LAST;"
6532     check_cc vc1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VC1_ANNEX_G;"
6533     check_cc mpeg1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG1;"
6534     check_cc mpeg2_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG2;"
6535     check_cc mpeg4_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG4;"
6536     check_cc hevc_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_HEVC;"
6537     check_cc h263_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H263;"
6538     check_cc h264_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H264;"
6539     check_cc vp8_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP8;"
6540     check_cc vp9_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP9;"
6541 fi
6542
6543 check_headers sys/videoio.h
6544 test_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6545
6546 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6547 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6548 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6549 # w32api 3.12 had it defined wrong
6550 check_cpp_condition vfwcap_defines vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER"
6551
6552 check_type "dshow.h" IBaseFilter
6553
6554 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6555 check_headers "dev/bktr/ioctl_meteor.h dev/bktr/ioctl_bt848.h"                   ||
6556     check_headers "machine/ioctl_meteor.h machine/ioctl_bt848.h"                 ||
6557     check_headers "dev/video/meteor/ioctl_meteor.h dev/video/bktr/ioctl_bt848.h" ||
6558     check_headers "dev/ic/bt8xx.h"
6559
6560 if check_struct sys/soundcard.h audio_buf_info bytes; then
6561     enable_sanitized sys/soundcard.h
6562 else
6563     test_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_sanitized sys/soundcard.h
6564     #include <sys/soundcard.h>
6565     audio_buf_info abc;
6566 EOF
6567 fi
6568
6569 enabled alsa && { check_pkg_config alsa alsa "alsa/asoundlib.h" snd_pcm_htimestamp ||
6570                   check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound; }
6571
6572 enabled libjack &&
6573     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
6574
6575 enabled sndio && check_lib sndio sndio.h sio_open -lsndio
6576
6577 if enabled libcdio; then
6578     check_pkg_config libcdio libcdio_paranoia "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open ||
6579     check_pkg_config libcdio libcdio_paranoia "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open ||
6580     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6581     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6582     die "ERROR: No usable libcdio/cdparanoia found"
6583 fi
6584
6585 enabled libxcb && check_pkg_config libxcb "xcb >= 1.4" xcb/xcb.h xcb_connect ||
6586     disable libxcb_shm libxcb_shape libxcb_xfixes
6587
6588 if enabled libxcb; then
6589     enabled libxcb_shm    && check_pkg_config libxcb_shm    xcb-shm    xcb/shm.h    xcb_shm_attach
6590     enabled libxcb_shape  && check_pkg_config libxcb_shape  xcb-shape  xcb/shape.h  xcb_shape_get_rectangles
6591     enabled libxcb_xfixes && check_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
6592 fi
6593
6594 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6595
6596 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6597 # the desktop api partition
6598 test_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
6599 #ifdef WINAPI_FAMILY
6600 #include <winapifamily.h>
6601 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
6602 #error desktop, not uwp
6603 #else
6604 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
6605 #endif
6606 #else
6607 #error no family set
6608 #endif
6609 EOF
6610
6611 enabled vaapi &&
6612     check_pkg_config vaapi "libva >= 0.35.0" "va/va.h" vaInitialize
6613
6614 if enabled vaapi; then
6615     check_pkg_config vaapi_drm "libva-drm" "va/va_drm.h" vaGetDisplayDRM
6616
6617     if enabled xlib; then
6618         check_pkg_config vaapi_x11 "libva-x11" "va/va_x11.h" vaGetDisplay
6619     fi
6620
6621     check_cpp_condition vaapi_1 "va/va.h" "VA_CHECK_VERSION(1, 0, 0)"
6622
6623     check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
6624     check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
6625     check_type   "va/va.h va/va_vpp.h" "VAProcFilterParameterBufferHDRToneMapping"
6626     check_struct "va/va.h va/va_vpp.h" "VAProcPipelineCaps" rotation_flags
6627     check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
6628     check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
6629     check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
6630     check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
6631 fi
6632
6633 if enabled_all opencl libdrm ; then
6634     check_type "CL/cl_intel.h" "clCreateImageFromFdINTEL_fn" &&
6635         enable opencl_drm_beignet
6636     check_func_headers "CL/cl_ext.h" clImportMemoryARM &&
6637         enable opencl_drm_arm
6638 fi
6639
6640 if enabled_all opencl vaapi ; then
6641     if enabled opencl_drm_beignet ; then
6642         enable opencl_vaapi_beignet
6643     else
6644         check_type "CL/cl.h CL/cl_va_api_media_sharing_intel.h" "clCreateFromVA_APIMediaSurfaceINTEL_fn" &&
6645             enable opencl_vaapi_intel_media
6646     fi
6647 fi
6648
6649 if enabled_all opencl dxva2 ; then
6650     check_type "CL/cl_dx9_media_sharing.h" cl_dx9_surface_info_khr &&
6651         enable opencl_dxva2
6652 fi
6653
6654 if enabled_all opencl d3d11va ; then
6655     check_type "CL/cl_d3d11.h" clGetDeviceIDsFromD3D11KHR_fn &&
6656         enable opencl_d3d11
6657 fi
6658
6659 enabled vdpau &&
6660     check_cpp_condition vdpau vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP"
6661
6662 enabled vdpau &&
6663     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6664
6665 enabled crystalhd && check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
6666
6667 enabled vulkan &&
6668     require_pkg_config vulkan "vulkan >= 1.1.97" "vulkan/vulkan.h" vkCreateInstance
6669
6670 if enabled x86; then
6671     case $target_os in
6672         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6673             ;;
6674         *)
6675             disable ffnvcodec cuvid nvdec nvenc
6676             ;;
6677     esac
6678 elif enabled_any aarch64 ppc64 && ! enabled bigendian; then
6679     case $target_os in
6680         linux)
6681             ;;
6682         *)
6683             disable ffnvcodec cuvid nvdec nvenc
6684             ;;
6685     esac
6686 else
6687     disable ffnvcodec cuvid nvdec nvenc
6688 fi
6689
6690 enabled ffnvcodec && enable cuda
6691
6692 enabled nvenc &&
6693     test_cc -I$source_path <<EOF || disable nvenc
6694 #include <ffnvcodec/nvEncodeAPI.h>
6695 NV_ENCODE_API_FUNCTION_LIST flist;
6696 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6697 int main(void) { return 0; }
6698 EOF
6699
6700 enabled amf &&
6701     check_cpp_condition amf "AMF/core/Version.h" \
6702         "(AMF_VERSION_MAJOR << 48 | AMF_VERSION_MINOR << 32 | AMF_VERSION_RELEASE << 16 | AMF_VERSION_BUILD_NUM) >= 0x0001000400090000"
6703
6704 # Funny iconv installations are not unusual, so check it after all flags have been set
6705 if enabled libc_iconv; then
6706     check_func_headers iconv.h iconv
6707 elif enabled iconv; then
6708     check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6709 fi
6710
6711 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6712
6713 # add some useful compiler flags if supported
6714 check_cflags -Wdeclaration-after-statement
6715 check_cflags -Wall
6716 check_cflags -Wdisabled-optimization
6717 check_cflags -Wpointer-arith
6718 check_cflags -Wredundant-decls
6719 check_cflags -Wwrite-strings
6720 check_cflags -Wtype-limits
6721 check_cflags -Wundef
6722 check_cflags -Wmissing-prototypes
6723 check_cflags -Wno-pointer-to-int-cast
6724 check_cflags -Wstrict-prototypes
6725 check_cflags -Wempty-body
6726
6727 if enabled extra_warnings; then
6728     check_cflags -Wcast-qual
6729     check_cflags -Wextra
6730     check_cflags -Wpedantic
6731 fi
6732
6733 check_disable_warning(){
6734     warning_flag=-W${1#-Wno-}
6735     test_cflags $unknown_warning_flags $warning_flag && add_cflags $1
6736 }
6737
6738 test_cflags -Werror=unused-command-line-argument &&
6739     append unknown_warning_flags "-Werror=unused-command-line-argument"
6740 test_cflags -Werror=unknown-warning-option &&
6741     append unknown_warning_flags "-Werror=unknown-warning-option"
6742
6743 check_disable_warning -Wno-parentheses
6744 check_disable_warning -Wno-switch
6745 check_disable_warning -Wno-format-zero-length
6746 check_disable_warning -Wno-pointer-sign
6747 check_disable_warning -Wno-unused-const-variable
6748 check_disable_warning -Wno-bool-operation
6749 check_disable_warning -Wno-char-subscripts
6750
6751 check_disable_warning_headers(){
6752     warning_flag=-W${1#-Wno-}
6753     test_cflags $warning_flag && add_cflags_headers $1
6754 }
6755
6756 check_disable_warning_headers -Wno-deprecated-declarations
6757 check_disable_warning_headers -Wno-unused-variable
6758
6759 test_cc <<EOF && enable blocks_extension
6760 void (^block)(void);
6761 EOF
6762
6763 # add some linker flags
6764 check_ldflags -Wl,--warn-common
6765 check_ldflags -Wl,-rpath-link=:libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6766 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir && add_ldsoflags -Wl,-rpath,$libdir
6767 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6768
6769 # add some strip flags
6770 check_stripflags -x
6771
6772 enabled neon_clobber_test &&
6773     check_ldflags -Wl,--wrap,avcodec_open2              \
6774                   -Wl,--wrap,avcodec_decode_audio4      \
6775                   -Wl,--wrap,avcodec_decode_video2      \
6776                   -Wl,--wrap,avcodec_decode_subtitle2   \
6777                   -Wl,--wrap,avcodec_encode_audio2      \
6778                   -Wl,--wrap,avcodec_encode_video2      \
6779                   -Wl,--wrap,avcodec_encode_subtitle    \
6780                   -Wl,--wrap,avcodec_send_packet        \
6781                   -Wl,--wrap,avcodec_receive_packet     \
6782                   -Wl,--wrap,avcodec_send_frame         \
6783                   -Wl,--wrap,avcodec_receive_frame      \
6784                   -Wl,--wrap,swr_convert                \
6785                   -Wl,--wrap,avresample_convert ||
6786     disable neon_clobber_test
6787
6788 enabled xmm_clobber_test &&
6789     check_ldflags -Wl,--wrap,avcodec_open2              \
6790                   -Wl,--wrap,avcodec_decode_audio4      \
6791                   -Wl,--wrap,avcodec_decode_video2      \
6792                   -Wl,--wrap,avcodec_decode_subtitle2   \
6793                   -Wl,--wrap,avcodec_encode_audio2      \
6794                   -Wl,--wrap,avcodec_encode_video2      \
6795                   -Wl,--wrap,avcodec_encode_subtitle    \
6796                   -Wl,--wrap,avcodec_send_packet        \
6797                   -Wl,--wrap,avcodec_receive_packet     \
6798                   -Wl,--wrap,avcodec_send_frame         \
6799                   -Wl,--wrap,avcodec_receive_frame      \
6800                   -Wl,--wrap,swr_convert                \
6801                   -Wl,--wrap,avresample_convert         \
6802                   -Wl,--wrap,sws_scale ||
6803     disable xmm_clobber_test
6804
6805 check_ld "cc" proper_dce <<EOF
6806 extern const int array[512];
6807 static inline int func(void) { return array[0]; }
6808 int main(void) { return 0; }
6809 EOF
6810
6811 if enabled proper_dce; then
6812     echo "X { local: *; };" > $TMPV
6813     if test_ldflags -Wl,${version_script},$TMPV; then
6814         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6815         quotes='""'
6816         test_cc <<EOF && enable symver_asm_label
6817 void ff_foo(void) __asm__ ("av_foo@VERSION");
6818 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6819 EOF
6820         test_cc <<EOF && enable symver_gnu_asm
6821 __asm__(".symver ff_foo,av_foo@VERSION");
6822 void ff_foo(void) {}
6823 EOF
6824     fi
6825 fi
6826
6827 if [ -z "$optflags" ]; then
6828     if enabled small; then
6829         optflags=$cflags_size
6830     elif enabled optimizations; then
6831         optflags=$cflags_speed
6832     else
6833         optflags=$cflags_noopt
6834     fi
6835 fi
6836
6837 check_optflags(){
6838     check_cflags "$@"
6839     enabled lto && check_ldflags "$@"
6840 }
6841
6842 check_optflags $optflags
6843 check_optflags -fno-math-errno
6844 check_optflags -fno-signed-zeros
6845
6846 if enabled lto; then
6847     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6848     check_cflags  -flto
6849     check_ldflags -flto $cpuflags
6850     disable inline_asm_direct_symbol_refs
6851 fi
6852
6853 enabled ftrapv && check_cflags -ftrapv
6854
6855 test_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6856 int x;
6857 EOF
6858
6859
6860 if enabled icc; then
6861     # Just warnings, no remarks
6862     check_cflags -w1
6863     # -wd: Disable following warnings
6864     # 144, 167, 556: -Wno-pointer-sign
6865     # 188: enumerated type mixed with another type
6866     # 1292: attribute "foo" ignored
6867     # 1419: external declaration in primary source file
6868     # 10006: ignoring unknown option -fno-signed-zeros
6869     # 10148: ignoring unknown option -Wno-parentheses
6870     # 10156: ignoring option '-W'; no argument required
6871     # 13200: No EMMS instruction before call to function
6872     # 13203: No EMMS instruction before return from function
6873     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6874     # 11030: Warning unknown option --as-needed
6875     # 10156: ignoring option '-export'; no argument required
6876     check_ldflags -wd10156,11030
6877     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6878     enable ebp_available
6879     # The test above does not test linking
6880     enabled lto && disable symver_asm_label
6881     if enabled x86_32; then
6882         icc_version=$($cc -dumpversion)
6883         test ${icc_version%%.*} -ge 11 &&
6884             check_cflags -falign-stack=maintain-16-byte ||
6885             disable aligned_stack
6886     fi
6887 elif enabled gcc; then
6888     check_optflags -fno-tree-vectorize
6889     check_cflags -Werror=format-security
6890     check_cflags -Werror=implicit-function-declaration
6891     check_cflags -Werror=missing-prototypes
6892     check_cflags -Werror=return-type
6893     check_cflags -Werror=vla
6894     check_cflags -Wformat
6895     check_cflags -fdiagnostics-color=auto
6896     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6897     if enabled x86_32; then
6898         case $target_os in
6899         *bsd*)
6900             # BSDs don't guarantee a 16 byte aligned stack, but we can
6901             # request GCC to try to maintain 16 byte alignment throughout
6902             # function calls. Library entry points that might call assembly
6903             # functions align the stack. (The parameter means 2^4 bytes.)
6904             check_cflags -mpreferred-stack-boundary=4
6905             ;;
6906         esac
6907     fi
6908 elif enabled llvm_gcc; then
6909     check_cflags -mllvm -stack-alignment=16
6910 elif enabled clang; then
6911     if enabled x86_32; then
6912         # Clang doesn't support maintaining alignment without assuming the
6913         # same alignment in every function. If 16 byte alignment would be
6914         # enabled, one would also have to either add attribute_align_arg on
6915         # every single entry point into the libraries or enable -mstackrealign
6916         # (doing stack realignment in every single function).
6917         case $target_os in
6918         mingw32|win32|*bsd*)
6919             disable aligned_stack
6920             ;;
6921         *)
6922             check_cflags -mllvm -stack-alignment=16
6923             check_cflags -mstack-alignment=16
6924             ;;
6925         esac
6926     else
6927         check_cflags -mllvm -stack-alignment=16
6928         check_cflags -mstack-alignment=16
6929     fi
6930     check_cflags -Qunused-arguments
6931     check_cflags -Werror=implicit-function-declaration
6932     check_cflags -Werror=missing-prototypes
6933     check_cflags -Werror=return-type
6934 elif enabled cparser; then
6935     add_cflags -Wno-missing-variable-declarations
6936     add_cflags -Wno-empty-statement
6937 elif enabled armcc; then
6938     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6939     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6940     # 2523: use of inline assembly is deprecated
6941     add_cflags -W${armcc_opt},--diag_suppress=2523
6942     add_cflags -W${armcc_opt},--diag_suppress=1207
6943     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6944     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6945     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6946     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6947 elif enabled pathscale; then
6948     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6949     disable inline_asm
6950 elif enabled_any msvc icl; then
6951     enabled x86_32 && disable aligned_stack
6952     enabled_all x86_32 debug && add_cflags -Oy-
6953     enabled debug && add_ldflags -debug
6954     enable pragma_deprecated
6955     if enabled icl; then
6956         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6957         # (correctly) on icl 13.x.
6958         test_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6959             add_cflags -Qansi-alias
6960         # Some inline asm is not compilable in debug
6961         if enabled debug; then
6962             disable ebp_available
6963             disable ebx_available
6964         fi
6965     fi
6966     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6967     check_cpp_condition log2 crtversion.h "_VC_CRT_MAJOR_VERSION >= 12"
6968     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6969     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6970     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6971     # MSVC 2013 and newer can handle it fine.
6972     # If this declspec fails, force including stdlib.h before the restrict redefinition
6973     # happens in config.h.
6974     if [ $restrict_keyword != restrict ]; then
6975         test_cc <<EOF || add_cflags -FIstdlib.h
6976 __declspec($restrict_keyword) void *foo(int);
6977 EOF
6978     fi
6979     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6980     # Issue has been fixed in MSVC v19.00.24218.
6981     test_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6982         check_cflags -d2SSAOptimizer-
6983     # enable utf-8 source processing on VS2015 U2 and newer
6984     test_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6985         add_cflags -utf-8
6986 fi
6987
6988 for pfx in "" host_; do
6989     varname=${pfx%_}cc_type
6990     eval "type=\$$varname"
6991     if [ "$type" = "msvc" ]; then
6992         test_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6993 static inline int foo(int a) { return a; }
6994 EOF
6995     fi
6996 done
6997
6998 case $as_type in
6999     clang)
7000         add_asflags -Qunused-arguments
7001     ;;
7002 esac
7003
7004 case $ld_type in
7005     clang)
7006         check_ldflags -Qunused-arguments
7007     ;;
7008 esac
7009
7010 enable frame_thread_encoder
7011
7012 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
7013
7014 check_deps $CONFIG_LIST       \
7015            $CONFIG_EXTRA      \
7016            $HAVE_LIST         \
7017            $ALL_COMPONENTS    \
7018
7019 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"
7020 enabled avresample && warn "Building with deprecated library libavresample"
7021
7022 case $target_os in
7023 haiku)
7024     disable memalign
7025     disable posix_memalign
7026     ;;
7027 *-dos|freedos|opendos)
7028     if test_cpp_condition sys/version.h "defined(__DJGPP__) && __DJGPP__ == 2 && __DJGPP_MINOR__ == 5"; then
7029         disable memalign
7030     fi
7031     ;;
7032 esac
7033
7034 flatten_extralibs(){
7035     nested_entries=
7036     list_name=$1
7037     eval list=\$${1}
7038     for entry in $list; do
7039         entry_copy=$entry
7040         resolve entry_copy
7041         flat_entries=
7042         for e in $entry_copy; do
7043             case $e in
7044                 *_extralibs) nested_entries="$nested_entries$e ";;
7045                           *) flat_entries="$flat_entries$e ";;
7046             esac
7047         done
7048         eval $entry="\$flat_entries"
7049     done
7050     append $list_name "$nested_entries"
7051
7052     resolve nested_entries
7053     if test -n "$(filter '*_extralibs' $nested_entries)"; then
7054         flatten_extralibs $list_name
7055     fi
7056 }
7057
7058 flatten_extralibs_wrapper(){
7059     list_name=$1
7060     flatten_extralibs $list_name
7061     unique $list_name
7062     resolve $list_name
7063     eval $list_name=\$\(\$ldflags_filter \$$list_name\)
7064     eval printf \''%s'\' \""\$$list_name"\"
7065 }
7066
7067 for linkunit in $LIBRARY_LIST; do
7068     unset current_extralibs
7069     eval components=\$$(toupper ${linkunit})_COMPONENTS_LIST
7070     for comp in ${components}; do
7071         enabled $comp || continue
7072         comp_extralibs="${comp}_extralibs"
7073         append current_extralibs $comp_extralibs
7074     done
7075     eval prepend ${linkunit}_extralibs $current_extralibs
7076 done
7077
7078 for linkunit in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
7079     eval ${linkunit}_extralibs=\$\(flatten_extralibs_wrapper ${linkunit}_extralibs\)
7080 done
7081
7082 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
7083
7084 for thread in $THREADS_LIST; do
7085     if enabled $thread; then
7086         test -n "$thread_type" &&
7087             die "ERROR: Only one thread type must be selected." ||
7088             thread_type="$thread"
7089     fi
7090 done
7091
7092 if disabled stdatomic; then
7093     if enabled atomics_gcc; then
7094         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
7095     elif enabled atomics_win32; then
7096         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
7097     elif enabled atomics_suncc; then
7098         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
7099     elif enabled pthreads; then
7100         add_compat atomics/pthread/stdatomic.o
7101         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
7102     else
7103         enabled threads && die "Threading is enabled, but no atomics are available"
7104         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
7105     fi
7106 fi
7107
7108 # Check if requested libraries were found.
7109 for lib in $AUTODETECT_LIBS; do
7110     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
7111 done
7112
7113 enabled zlib && add_cppflags -DZLIB_CONST
7114
7115 # conditional library dependencies, in any order
7116 enabled afftdn_filter       && prepend avfilter_deps "avcodec"
7117 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
7118 enabled afir_filter         && prepend avfilter_deps "avcodec"
7119 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
7120 enabled aresample_filter    && prepend avfilter_deps "swresample"
7121 enabled atempo_filter       && prepend avfilter_deps "avcodec"
7122 enabled bm3d_filter         && prepend avfilter_deps "avcodec"
7123 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
7124 enabled convolve_filter     && prepend avfilter_deps "avcodec"
7125 enabled deconvolve_filter   && prepend avfilter_deps "avcodec"
7126 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
7127 enabled elbg_filter         && prepend avfilter_deps "avcodec"
7128 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
7129 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
7130 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
7131 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
7132 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
7133 enabled pan_filter          && prepend avfilter_deps "swresample"
7134 enabled pp_filter           && prepend avfilter_deps "postproc"
7135 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
7136 enabled resample_filter && prepend avfilter_deps "avresample"
7137 enabled sab_filter          && prepend avfilter_deps "swscale"
7138 enabled scale_filter    && prepend avfilter_deps "swscale"
7139 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
7140 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
7141 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
7142 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
7143 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
7144 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
7145 enabled smartblur_filter    && prepend avfilter_deps "swscale"
7146 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
7147 enabled spp_filter          && prepend avfilter_deps "avcodec"
7148 enabled sr_filter           && prepend avfilter_deps "avformat swscale"
7149 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
7150 enabled uspp_filter         && prepend avfilter_deps "avcodec"
7151 enabled zoompan_filter      && prepend avfilter_deps "swscale"
7152
7153 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
7154
7155 #FIXME
7156 enabled_any sdl2_outdev opengl_outdev && enabled sdl2 &&
7157     add_cflags $(filter_out '-Dmain=SDL_main' $sdl2_cflags)
7158
7159 enabled opus_decoder    && prepend avcodec_deps "swresample"
7160
7161 # reorder the items at var $1 to align with the items order at var $2 .
7162 # die if an item at $1 is not at $2 .
7163 reorder_by(){
7164     eval rb_in=\$$1
7165     eval rb_ordered=\$$2
7166
7167     for rb in $rb_in; do
7168         is_in $rb $rb_ordered || die "$rb at \$$1 is not at \$$2"
7169     done
7170
7171     rb_out=
7172     for rb in $rb_ordered; do
7173         is_in $rb $rb_in && rb_out="$rb_out$rb "
7174     done
7175     eval $1=\$rb_out
7176 }
7177
7178 # deps-expand fflib $1:  N x {append all expanded deps; unique}
7179 # within a set of N items, N expansions are enough to expose a cycle.
7180 expand_deps(){
7181     unique ${1}_deps  # required for the early break test.
7182     for dummy in $LIBRARY_LIST; do  # N iteratios
7183         eval deps=\$${1}_deps
7184         append ${1}_deps $(map 'eval echo \$${v}_deps' $deps)
7185         unique ${1}_deps
7186         eval '[ ${#deps} = ${#'${1}_deps'} ]' && break  # doesn't expand anymore
7187     done
7188
7189     eval is_in $1 \$${1}_deps && die "Dependency cycle at ${1}_deps"
7190     reorder_by ${1}_deps LIBRARY_LIST  # linking order is expected later
7191 }
7192
7193 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
7194 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
7195
7196 map 'expand_deps $v' $LIBRARY_LIST
7197
7198 if test "$quiet" != "yes"; then
7199
7200 echo "install prefix            $prefix"
7201 echo "source path               $source_path"
7202 echo "C compiler                $cc"
7203 echo "C library                 $libc_type"
7204 if test "$host_cc" != "$cc"; then
7205     echo "host C compiler           $host_cc"
7206     echo "host C library            $host_libc_type"
7207 fi
7208 echo "ARCH                      $arch ($cpu)"
7209 if test "$build_suffix" != ""; then
7210     echo "build suffix              $build_suffix"
7211 fi
7212 if test "$progs_suffix" != ""; then
7213     echo "progs suffix              $progs_suffix"
7214 fi
7215 if test "$extra_version" != ""; then
7216     echo "version string suffix     $extra_version"
7217 fi
7218 echo "big-endian                ${bigendian-no}"
7219 echo "runtime cpu detection     ${runtime_cpudetect-no}"
7220 if enabled x86; then
7221     echo "standalone assembly       ${x86asm-no}"
7222     echo "x86 assembler             ${x86asmexe}"
7223     echo "MMX enabled               ${mmx-no}"
7224     echo "MMXEXT enabled            ${mmxext-no}"
7225     echo "3DNow! enabled            ${amd3dnow-no}"
7226     echo "3DNow! extended enabled   ${amd3dnowext-no}"
7227     echo "SSE enabled               ${sse-no}"
7228     echo "SSSE3 enabled             ${ssse3-no}"
7229     echo "AESNI enabled             ${aesni-no}"
7230     echo "AVX enabled               ${avx-no}"
7231     echo "AVX2 enabled              ${avx2-no}"
7232     echo "AVX-512 enabled           ${avx512-no}"
7233     echo "XOP enabled               ${xop-no}"
7234     echo "FMA3 enabled              ${fma3-no}"
7235     echo "FMA4 enabled              ${fma4-no}"
7236     echo "i686 features enabled     ${i686-no}"
7237     echo "CMOV is fast              ${fast_cmov-no}"
7238     echo "EBX available             ${ebx_available-no}"
7239     echo "EBP available             ${ebp_available-no}"
7240 fi
7241 if enabled aarch64; then
7242     echo "NEON enabled              ${neon-no}"
7243     echo "VFP enabled               ${vfp-no}"
7244 fi
7245 if enabled arm; then
7246     echo "ARMv5TE enabled           ${armv5te-no}"
7247     echo "ARMv6 enabled             ${armv6-no}"
7248     echo "ARMv6T2 enabled           ${armv6t2-no}"
7249     echo "VFP enabled               ${vfp-no}"
7250     echo "NEON enabled              ${neon-no}"
7251     echo "THUMB enabled             ${thumb-no}"
7252 fi
7253 if enabled mips; then
7254     echo "MIPS FPU enabled          ${mipsfpu-no}"
7255     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
7256     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
7257     echo "MIPS MSA enabled          ${msa-no}"
7258     echo "MIPS MSA2 enabled         ${msa2-no}"
7259     echo "LOONGSON MMI enabled      ${mmi-no}"
7260 fi
7261 if enabled ppc; then
7262     echo "AltiVec enabled           ${altivec-no}"
7263     echo "VSX enabled               ${vsx-no}"
7264     echo "POWER8 enabled            ${power8-no}"
7265     echo "PPC 4xx optimizations     ${ppc4xx-no}"
7266     echo "dcbzl available           ${dcbzl-no}"
7267 fi
7268 echo "debug symbols             ${debug-no}"
7269 echo "strip symbols             ${stripping-no}"
7270 echo "optimize for size         ${small-no}"
7271 echo "optimizations             ${optimizations-no}"
7272 echo "static                    ${static-no}"
7273 echo "shared                    ${shared-no}"
7274 echo "postprocessing support    ${postproc-no}"
7275 echo "network support           ${network-no}"
7276 echo "threading support         ${thread_type-no}"
7277 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
7278 echo "texi2html enabled         ${texi2html-no}"
7279 echo "perl enabled              ${perl-no}"
7280 echo "pod2man enabled           ${pod2man-no}"
7281 echo "makeinfo enabled          ${makeinfo-no}"
7282 echo "makeinfo supports HTML    ${makeinfo_html-no}"
7283 test -n "$random_seed" &&
7284     echo "random seed               ${random_seed}"
7285 echo
7286
7287 echo "External libraries:"
7288 print_enabled '' $EXTERNAL_LIBRARY_LIST $EXTERNAL_AUTODETECT_LIBRARY_LIST | print_in_columns
7289 echo
7290
7291 echo "External libraries providing hardware acceleration:"
7292 print_enabled '' $HWACCEL_LIBRARY_LIST $HWACCEL_AUTODETECT_LIBRARY_LIST | print_in_columns
7293 echo
7294
7295 echo "Libraries:"
7296 print_enabled '' $LIBRARY_LIST | print_in_columns
7297 echo
7298
7299 echo "Programs:"
7300 print_enabled '' $PROGRAM_LIST | print_in_columns
7301 echo
7302
7303 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
7304     echo "Enabled ${type}s:"
7305     eval list=\$$(toupper $type)_LIST
7306     print_enabled '_*' $list | print_in_columns
7307     echo
7308 done
7309
7310 if test -n "$ignore_tests"; then
7311     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
7312     echo "Ignored FATE tests:"
7313     echo $ignore_tests | print_in_columns
7314     echo
7315 fi
7316
7317 echo "License: $license"
7318
7319 fi # test "$quiet" != "yes"
7320
7321 if test -n "$WARN_IF_GETS_DISABLED_LIST"; then
7322     for cfg in $WARN_IF_GETS_DISABLED_LIST; do
7323         if disabled $cfg; then
7324             varname=${cfg}_disable_reason
7325             eval "warn \"Disabled $cfg because \$$varname\""
7326         fi
7327     done
7328 fi
7329
7330 if test -n "$WARNINGS"; then
7331     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
7332     enabled fatal_warnings && exit 1
7333 fi
7334
7335 test -e Makefile || echo "include $source_path/Makefile" > Makefile
7336
7337 esc(){
7338     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
7339 }
7340
7341 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
7342
7343 enabled stripping || strip="echo skipping strip"
7344 enabled stripping || striptype=""
7345
7346 config_files="$TMPH ffbuild/config.mak doc/config.texi"
7347
7348 cat > ffbuild/config.mak <<EOF
7349 # Automatically generated by configure - do not modify!
7350 ifndef FFMPEG_CONFIG_MAK
7351 FFMPEG_CONFIG_MAK=1
7352 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
7353 prefix=$prefix
7354 LIBDIR=\$(DESTDIR)$libdir
7355 SHLIBDIR=\$(DESTDIR)$shlibdir
7356 INCDIR=\$(DESTDIR)$incdir
7357 BINDIR=\$(DESTDIR)$bindir
7358 DATADIR=\$(DESTDIR)$datadir
7359 DOCDIR=\$(DESTDIR)$docdir
7360 MANDIR=\$(DESTDIR)$mandir
7361 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
7362 INSTALL_NAME_DIR=$install_name_dir
7363 SRC_PATH=$source_path
7364 SRC_LINK=$source_link
7365 ifndef MAIN_MAKEFILE
7366 SRC_PATH:=\$(SRC_PATH:.%=..%)
7367 endif
7368 CC_IDENT=$cc_ident
7369 ARCH=$arch
7370 INTRINSICS=$intrinsics
7371 EXTERN_PREFIX=$extern_prefix
7372 CC=$cc
7373 CXX=$cxx
7374 AS=$as
7375 OBJCC=$objcc
7376 LD=$ld
7377 DEPCC=$dep_cc
7378 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
7379 DEPAS=$as
7380 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
7381 X86ASM=$x86asmexe
7382 DEPX86ASM=$x86asmexe
7383 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
7384 AR=$ar
7385 ARFLAGS=$arflags
7386 AR_O=$ar_o
7387 AR_CMD=$ar
7388 NM_CMD=$nm
7389 RANLIB=$ranlib
7390 STRIP=$strip
7391 STRIPTYPE=$striptype
7392 NVCC=$nvcc
7393 CP=cp -p
7394 LN_S=$ln_s
7395 CPPFLAGS=$CPPFLAGS
7396 CFLAGS=$CFLAGS
7397 CXXFLAGS=$CXXFLAGS
7398 OBJCFLAGS=$OBJCFLAGS
7399 ASFLAGS=$ASFLAGS
7400 NVCCFLAGS=$nvccflags
7401 AS_C=$AS_C
7402 AS_O=$AS_O
7403 OBJCC_C=$OBJCC_C
7404 OBJCC_E=$OBJCC_E
7405 OBJCC_O=$OBJCC_O
7406 CC_C=$CC_C
7407 CC_E=$CC_E
7408 CC_O=$CC_O
7409 CXX_C=$CXX_C
7410 CXX_O=$CXX_O
7411 NVCC_C=$NVCC_C
7412 NVCC_O=$NVCC_O
7413 LD_O=$LD_O
7414 X86ASM_O=$X86ASM_O
7415 LD_LIB=$LD_LIB
7416 LD_PATH=$LD_PATH
7417 DLLTOOL=$dlltool
7418 WINDRES=$windres
7419 DEPWINDRES=$dep_cc
7420 DOXYGEN=$doxygen
7421 LDFLAGS=$LDFLAGS
7422 LDEXEFLAGS=$LDEXEFLAGS
7423 LDSOFLAGS=$LDSOFLAGS
7424 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
7425 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
7426 X86ASMFLAGS=$X86ASMFLAGS
7427 BUILDSUF=$build_suffix
7428 PROGSSUF=$progs_suffix
7429 FULLNAME=$FULLNAME
7430 LIBPREF=$LIBPREF
7431 LIBSUF=$LIBSUF
7432 LIBNAME=$LIBNAME
7433 SLIBPREF=$SLIBPREF
7434 SLIBSUF=$SLIBSUF
7435 EXESUF=$EXESUF
7436 EXTRA_VERSION=$extra_version
7437 CCDEP=$CCDEP
7438 CXXDEP=$CXXDEP
7439 CCDEP_FLAGS=$CCDEP_FLAGS
7440 ASDEP=$ASDEP
7441 ASDEP_FLAGS=$ASDEP_FLAGS
7442 X86ASMDEP=$X86ASMDEP
7443 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
7444 CC_DEPFLAGS=$CC_DEPFLAGS
7445 AS_DEPFLAGS=$AS_DEPFLAGS
7446 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
7447 HOSTCC=$host_cc
7448 HOSTLD=$host_ld
7449 HOSTCFLAGS=$host_cflags
7450 HOSTCPPFLAGS=$host_cppflags
7451 HOSTEXESUF=$HOSTEXESUF
7452 HOSTLDFLAGS=$host_ldflags
7453 HOSTEXTRALIBS=$host_extralibs
7454 DEPHOSTCC=$host_cc
7455 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
7456 HOSTCCDEP=$HOSTCCDEP
7457 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
7458 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
7459 HOSTCC_C=$HOSTCC_C
7460 HOSTCC_O=$HOSTCC_O
7461 HOSTLD_O=$HOSTLD_O
7462 TARGET_EXEC=$target_exec $target_exec_args
7463 TARGET_PATH=$target_path
7464 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
7465 CFLAGS-ffplay=${sdl2_cflags}
7466 CFLAGS_HEADERS=$CFLAGS_HEADERS
7467 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
7468 EXTRALIBS=$extralibs
7469 COMPAT_OBJS=$compat_objs
7470 INSTALL=$install
7471 LIBTARGET=${LIBTARGET}
7472 SLIBNAME=${SLIBNAME}
7473 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
7474 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
7475 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
7476 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
7477 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
7478 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
7479 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
7480 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
7481 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
7482 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
7483 NOREDZONE_FLAGS=$noredzone_flags
7484 LIBFUZZER_PATH=$libfuzzer_path
7485 IGNORE_TESTS=$ignore_tests
7486 EOF
7487
7488 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
7489
7490 for entry in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
7491     eval echo "EXTRALIBS-${entry}=\$${entry}_extralibs" >> ffbuild/config.mak
7492 done
7493
7494 cat > $TMPH <<EOF
7495 /* Automatically generated by configure - do not modify! */
7496 #ifndef FFMPEG_CONFIG_H
7497 #define FFMPEG_CONFIG_H
7498 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
7499 #define FFMPEG_LICENSE "$(c_escape $license)"
7500 #define CONFIG_THIS_YEAR 2020
7501 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
7502 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
7503 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
7504 #define av_restrict $restrict_keyword
7505 #define EXTERN_PREFIX "${extern_prefix}"
7506 #define EXTERN_ASM ${extern_prefix}
7507 #define BUILDSUF "$build_suffix"
7508 #define SLIBSUF "$SLIBSUF"
7509 #define HAVE_MMX2 HAVE_MMXEXT
7510 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
7511 EOF
7512
7513 test -n "$assert_level" &&
7514     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
7515
7516 test -n "$malloc_prefix" &&
7517     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
7518
7519 if enabled x86asm; then
7520     append config_files $TMPASM
7521     cat > $TMPASM <<EOF
7522 ; Automatically generated by configure - do not modify!
7523 EOF
7524 fi
7525
7526 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
7527
7528
7529 mkdir -p doc
7530 mkdir -p tests
7531 mkdir -p tests/api
7532 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
7533
7534 print_config ARCH_   "$config_files" $ARCH_LIST
7535 print_config HAVE_   "$config_files" $HAVE_LIST
7536 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
7537                                      $CONFIG_EXTRA      \
7538                                      $ALL_COMPONENTS    \
7539
7540 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
7541 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
7542
7543 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
7544 cp_if_changed $TMPH config.h
7545 touch ffbuild/.config
7546
7547 enabled x86asm && cp_if_changed $TMPASM config.asm
7548
7549 cat > $TMPH <<EOF
7550 /* Generated by ffmpeg configure */
7551 #ifndef AVUTIL_AVCONFIG_H
7552 #define AVUTIL_AVCONFIG_H
7553 EOF
7554
7555 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
7556
7557 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
7558
7559 cp_if_changed $TMPH libavutil/avconfig.h
7560
7561 # full_filter_name_foo=vf_foo
7562 # full_filter_name_bar=asrc_bar
7563 # ...
7564 eval "$(sed -n "s/^extern AVFilter ff_\([avfsinkrc]\{2,5\}\)_\(.*\);/full_filter_name_\2=\1_\2/p" $source_path/libavfilter/allfilters.c)"
7565
7566 # generate the lists of enabled components
7567 print_enabled_components(){
7568     file=$1
7569     struct_name=$2
7570     name=$3
7571     shift 3
7572     echo "static const $struct_name * const $name[] = {" > $TMPH
7573     for c in $*; do
7574         if enabled $c; then
7575             case $name in
7576                 filter_list)
7577                     eval c=\$full_filter_name_${c%_filter}
7578                 ;;
7579                 indev_list)
7580                     c=${c%_indev}_demuxer
7581                 ;;
7582                 outdev_list)
7583                     c=${c%_outdev}_muxer
7584                 ;;
7585             esac
7586             printf "    &ff_%s,\n" $c >> $TMPH
7587         fi
7588     done
7589     if [ "$name" = "filter_list" ]; then
7590         for c in asrc_abuffer vsrc_buffer asink_abuffer vsink_buffer; do
7591             printf "    &ff_%s,\n" $c >> $TMPH
7592         done
7593     fi
7594     echo "    NULL };" >> $TMPH
7595     cp_if_changed $TMPH $file
7596 }
7597
7598 print_enabled_components libavfilter/filter_list.c AVFilter filter_list $FILTER_LIST
7599 print_enabled_components libavcodec/codec_list.c AVCodec codec_list $CODEC_LIST
7600 print_enabled_components libavcodec/parser_list.c AVCodecParser parser_list $PARSER_LIST
7601 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
7602 print_enabled_components libavformat/demuxer_list.c AVInputFormat demuxer_list $DEMUXER_LIST
7603 print_enabled_components libavformat/muxer_list.c AVOutputFormat muxer_list $MUXER_LIST
7604 print_enabled_components libavdevice/indev_list.c AVInputFormat indev_list $INDEV_LIST
7605 print_enabled_components libavdevice/outdev_list.c AVOutputFormat outdev_list $OUTDEV_LIST
7606 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
7607
7608 # Settings for pkg-config files
7609
7610 cat > $TMPH <<EOF
7611 # Automatically generated by configure - do not modify!
7612 shared=$shared
7613 build_suffix=$build_suffix
7614 prefix=$prefix
7615 libdir=$libdir
7616 incdir=$incdir
7617 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
7618 source_path=${source_path}
7619 LIBPREF=${LIBPREF}
7620 LIBSUF=${LIBSUF}
7621 extralibs_avutil="$avutil_extralibs"
7622 extralibs_avcodec="$avcodec_extralibs"
7623 extralibs_avformat="$avformat_extralibs"
7624 extralibs_avdevice="$avdevice_extralibs"
7625 extralibs_avfilter="$avfilter_extralibs"
7626 extralibs_avresample="$avresample_extralibs"
7627 extralibs_postproc="$postproc_extralibs"
7628 extralibs_swscale="$swscale_extralibs"
7629 extralibs_swresample="$swresample_extralibs"
7630 EOF
7631
7632 for lib in $LIBRARY_LIST; do
7633     lib_deps="$(eval echo \$${lib}_deps)"
7634     echo ${lib}_deps=\"$lib_deps\" >> $TMPH
7635 done
7636
7637 cp_if_changed $TMPH ffbuild/config.sh