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