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