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