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

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