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 avgblur_vulkan_filter_deps="vulkan libglslang"
3465 azmq_filter_deps="libzmq"
3466 blackframe_filter_deps="gpl"
3467 bm3d_filter_deps="avcodec"
3468 bm3d_filter_select="dct"
3469 boxblur_filter_deps="gpl"
3470 boxblur_opencl_filter_deps="opencl gpl"
3471 bs2b_filter_deps="libbs2b"
3472 chromaber_vulkan_filter_deps="vulkan libglslang"
3473 colorkey_opencl_filter_deps="opencl"
3474 colormatrix_filter_deps="gpl"
3475 convolution_opencl_filter_deps="opencl"
3476 convolve_filter_deps="avcodec"
3477 convolve_filter_select="fft"
3478 coreimage_filter_deps="coreimage appkit"
3479 coreimage_filter_extralibs="-framework OpenGL"
3480 coreimagesrc_filter_deps="coreimage appkit"
3481 coreimagesrc_filter_extralibs="-framework OpenGL"
3482 cover_rect_filter_deps="avcodec avformat gpl"
3483 cropdetect_filter_deps="gpl"
3484 deconvolve_filter_deps="avcodec"
3485 deconvolve_filter_select="fft"
3486 deinterlace_qsv_filter_deps="libmfx"
3487 deinterlace_vaapi_filter_deps="vaapi"
3488 delogo_filter_deps="gpl"
3489 denoise_vaapi_filter_deps="vaapi"
3490 derain_filter_select="dnn"
3491 deshake_filter_select="pixelutils"
3492 deshake_opencl_filter_deps="opencl"
3493 dilation_opencl_filter_deps="opencl"
3494 dnn_processing_filter_select="dnn"
3495 drawtext_filter_deps="libfreetype"
3496 drawtext_filter_suggest="libfontconfig libfribidi"
3497 elbg_filter_deps="avcodec"
3498 eq_filter_deps="gpl"
3499 erosion_opencl_filter_deps="opencl"
3500 fftfilt_filter_deps="avcodec"
3501 fftfilt_filter_select="rdft"
3502 fftdnoiz_filter_deps="avcodec"
3503 fftdnoiz_filter_select="fft"
3504 find_rect_filter_deps="avcodec avformat gpl"
3505 firequalizer_filter_deps="avcodec"
3506 firequalizer_filter_select="rdft"
3507 flite_filter_deps="libflite"
3508 framerate_filter_select="scene_sad"
3509 freezedetect_filter_select="scene_sad"
3510 frei0r_filter_deps="frei0r libdl"
3511 frei0r_src_filter_deps="frei0r libdl"
3512 fspp_filter_deps="gpl"
3513 headphone_filter_select="fft"
3514 histeq_filter_deps="gpl"
3515 hqdn3d_filter_deps="gpl"
3516 interlace_filter_deps="gpl"
3517 kerndeint_filter_deps="gpl"
3518 ladspa_filter_deps="ladspa libdl"
3519 lensfun_filter_deps="liblensfun version3"
3520 lv2_filter_deps="lv2"
3521 mcdeint_filter_deps="avcodec gpl"
3522 movie_filter_deps="avcodec avformat"
3523 mpdecimate_filter_deps="gpl"
3524 mpdecimate_filter_select="pixelutils"
3525 minterpolate_filter_select="scene_sad"
3526 mptestsrc_filter_deps="gpl"
3527 negate_filter_deps="lut_filter"
3528 nlmeans_opencl_filter_deps="opencl"
3529 nnedi_filter_deps="gpl"
3530 ocr_filter_deps="libtesseract"
3531 ocv_filter_deps="libopencv"
3532 openclsrc_filter_deps="opencl"
3533 overlay_opencl_filter_deps="opencl"
3534 overlay_qsv_filter_deps="libmfx"
3535 overlay_qsv_filter_select="qsvvpp"
3536 overlay_vulkan_filter_deps="vulkan libglslang"
3537 owdenoise_filter_deps="gpl"
3538 pan_filter_deps="swresample"
3539 perspective_filter_deps="gpl"
3540 phase_filter_deps="gpl"
3541 pp7_filter_deps="gpl"
3542 pp_filter_deps="gpl postproc"
3543 prewitt_opencl_filter_deps="opencl"
3544 procamp_vaapi_filter_deps="vaapi"
3545 program_opencl_filter_deps="opencl"
3546 pullup_filter_deps="gpl"
3547 removelogo_filter_deps="avcodec avformat swscale"
3548 repeatfields_filter_deps="gpl"
3549 resample_filter_deps="avresample"
3550 roberts_opencl_filter_deps="opencl"
3551 rubberband_filter_deps="librubberband"
3552 sab_filter_deps="gpl swscale"
3553 scale2ref_filter_deps="swscale"
3554 scale_filter_deps="swscale"
3555 scale_qsv_filter_deps="libmfx"
3556 select_filter_select="scene_sad"
3557 sharpness_vaapi_filter_deps="vaapi"
3558 showcqt_filter_deps="avcodec avformat swscale"
3559 showcqt_filter_suggest="libfontconfig libfreetype"
3560 showcqt_filter_select="fft"
3561 showfreqs_filter_deps="avcodec"
3562 showfreqs_filter_select="fft"
3563 showspatial_filter_select="fft"
3564 showspectrum_filter_deps="avcodec"
3565 showspectrum_filter_select="fft"
3566 showspectrumpic_filter_deps="avcodec"
3567 showspectrumpic_filter_select="fft"
3568 signature_filter_deps="gpl avcodec avformat"
3569 sinc_filter_select="rdft"
3570 smartblur_filter_deps="gpl swscale"
3571 sobel_opencl_filter_deps="opencl"
3572 sofalizer_filter_deps="libmysofa avcodec"
3573 sofalizer_filter_select="fft"
3574 spectrumsynth_filter_deps="avcodec"
3575 spectrumsynth_filter_select="fft"
3576 spp_filter_deps="gpl avcodec"
3577 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3578 sr_filter_deps="avformat swscale"
3579 sr_filter_select="dnn"
3580 stereo3d_filter_deps="gpl"
3581 subtitles_filter_deps="avformat avcodec libass"
3582 super2xsai_filter_deps="gpl"
3583 pixfmts_super2xsai_test_deps="super2xsai_filter"
3584 superequalizer_filter_select="rdft"
3585 surround_filter_select="rdft"
3586 tinterlace_filter_deps="gpl"
3587 tinterlace_merge_test_deps="tinterlace_filter"
3588 tinterlace_pad_test_deps="tinterlace_filter"
3589 tonemap_filter_deps="const_nan"
3590 tonemap_vaapi_filter_deps="vaapi VAProcFilterParameterBufferHDRToneMapping"
3591 tonemap_opencl_filter_deps="opencl const_nan"
3592 transpose_opencl_filter_deps="opencl"
3593 transpose_vaapi_filter_deps="vaapi VAProcPipelineCaps_rotation_flags"
3594 unsharp_opencl_filter_deps="opencl"
3595 uspp_filter_deps="gpl avcodec"
3596 vaguedenoiser_filter_deps="gpl"
3597 vidstabdetect_filter_deps="libvidstab"
3598 vidstabtransform_filter_deps="libvidstab"
3599 libvmaf_filter_deps="libvmaf pthreads"
3600 zmq_filter_deps="libzmq"
3601 zoompan_filter_deps="swscale"
3602 zscale_filter_deps="libzimg const_nan"
3603 scale_vaapi_filter_deps="vaapi"
3604 scale_vulkan_filter_deps="vulkan libglslang"
3605 vpp_qsv_filter_deps="libmfx"
3606 vpp_qsv_filter_select="qsvvpp"
3607 xfade_opencl_filter_deps="opencl"
3608 yadif_cuda_filter_deps="ffnvcodec"
3609 yadif_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3610
3611 # examples
3612 avio_dir_cmd_deps="avformat avutil"
3613 avio_reading_deps="avformat avcodec avutil"
3614 decode_audio_example_deps="avcodec avutil"
3615 decode_video_example_deps="avcodec avutil"
3616 demuxing_decoding_example_deps="avcodec avformat avutil"
3617 encode_audio_example_deps="avcodec avutil"
3618 encode_video_example_deps="avcodec avutil"
3619 extract_mvs_example_deps="avcodec avformat avutil"
3620 filter_audio_example_deps="avfilter avutil"
3621 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3622 filtering_video_example_deps="avfilter avcodec avformat avutil"
3623 http_multiclient_example_deps="avformat avutil fork"
3624 hw_decode_example_deps="avcodec avformat avutil"
3625 metadata_example_deps="avformat avutil"
3626 muxing_example_deps="avcodec avformat avutil swscale"
3627 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3628 remuxing_example_deps="avcodec avformat avutil"
3629 resampling_audio_example_deps="avutil swresample"
3630 scaling_video_example_deps="avutil swscale"
3631 transcode_aac_example_deps="avcodec avformat swresample"
3632 transcoding_example_deps="avfilter avcodec avformat avutil"
3633 vaapi_encode_example_deps="avcodec avutil h264_vaapi_encoder"
3634 vaapi_transcode_example_deps="avcodec avformat avutil h264_vaapi_encoder"
3635
3636 # EXTRALIBS_LIST
3637 cpu_init_extralibs="pthreads_extralibs"
3638 cws2fws_extralibs="zlib_extralibs"
3639
3640 # libraries, in any order
3641 avcodec_deps="avutil"
3642 avcodec_suggest="libm"
3643 avcodec_select="null_bsf"
3644 avdevice_deps="avformat avcodec avutil"
3645 avdevice_suggest="libm"
3646 avfilter_deps="avutil"
3647 avfilter_suggest="libm"
3648 avformat_deps="avcodec avutil"
3649 avformat_suggest="libm network zlib"
3650 avresample_deps="avutil"
3651 avresample_suggest="libm"
3652 avutil_suggest="clock_gettime ffnvcodec libm libdrm libmfx opencl user32 vaapi vulkan videotoolbox corefoundation corevideo coremedia bcrypt"
3653 postproc_deps="avutil gpl"
3654 postproc_suggest="libm"
3655 swresample_deps="avutil"
3656 swresample_suggest="libm libsoxr"
3657 swscale_deps="avutil"
3658 swscale_suggest="libm"
3659
3660 avcodec_extralibs="pthreads_extralibs iconv_extralibs dxva2_extralibs"
3661 avfilter_extralibs="pthreads_extralibs"
3662 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3663
3664 # programs
3665 ffmpeg_deps="avcodec avfilter avformat"
3666 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3667                hflip_filter null_filter
3668                transpose_filter trim_filter vflip_filter"
3669 ffmpeg_suggest="ole32 psapi shell32"
3670 ffplay_deps="avcodec avformat swscale swresample sdl2"
3671 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3672 ffplay_suggest="shell32"
3673 ffprobe_deps="avcodec avformat"
3674 ffprobe_suggest="shell32"
3675
3676 # documentation
3677 podpages_deps="perl"
3678 manpages_deps="perl pod2man"
3679 htmlpages_deps="perl"
3680 htmlpages_deps_any="makeinfo_html texi2html"
3681 txtpages_deps="perl makeinfo"
3682 doc_deps_any="manpages htmlpages podpages txtpages"
3683
3684 # default parameters
3685
3686 logfile="ffbuild/config.log"
3687
3688 # installation paths
3689 prefix_default="/usr/local"
3690 bindir_default='${prefix}/bin'
3691 datadir_default='${prefix}/share/ffmpeg'
3692 docdir_default='${prefix}/share/doc/ffmpeg'
3693 incdir_default='${prefix}/include'
3694 libdir_default='${prefix}/lib'
3695 mandir_default='${prefix}/share/man'
3696
3697 # toolchain
3698 ar_default="ar"
3699 cc_default="gcc"
3700 cxx_default="g++"
3701 host_cc_default="gcc"
3702 doxygen_default="doxygen"
3703 install="install"
3704 ln_s_default="ln -s -f"
3705 nm_default="nm -g"
3706 pkg_config_default=pkg-config
3707 ranlib_default="ranlib"
3708 strip_default="strip"
3709 version_script='--version-script'
3710 objformat="elf32"
3711 x86asmexe_default="nasm"
3712 windres_default="windres"
3713 striptype="direct"
3714
3715 # OS
3716 target_os_default=$(tolower $(uname -s))
3717 host_os=$target_os_default
3718
3719 # machine
3720 if test "$target_os_default" = aix; then
3721     arch_default=$(uname -p)
3722     strip_default="strip -X32_64"
3723     nm_default="nm -g -X32_64"
3724 else
3725     arch_default=$(uname -m)
3726 fi
3727 cpu="generic"
3728 intrinsics="none"
3729
3730 # configurable options
3731 enable $PROGRAM_LIST
3732 enable $DOCUMENT_LIST
3733 enable $EXAMPLE_LIST
3734 enable $(filter_out avresample $LIBRARY_LIST)
3735 enable stripping
3736
3737 enable asm
3738 enable debug
3739 enable doc
3740 enable faan faandct faanidct
3741 enable large_tests
3742 enable optimizations
3743 enable runtime_cpudetect
3744 enable safe_bitstream_reader
3745 enable static
3746 enable swscale_alpha
3747 enable valgrind_backtrace
3748
3749 sws_max_filter_size_default=256
3750 set_default sws_max_filter_size
3751
3752 # internal components are enabled by default
3753 enable $EXTRALIBS_LIST
3754
3755 # Avoid external, non-system, libraries getting enabled by dependency resolution
3756 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3757
3758 # build settings
3759 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3760 LIBPREF="lib"
3761 LIBSUF=".a"
3762 FULLNAME='$(NAME)$(BUILDSUF)'
3763 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3764 SLIBPREF="lib"
3765 SLIBSUF=".so"
3766 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3767 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3768 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3769 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3770 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3771 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3772 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3773
3774 asflags_filter=echo
3775 cflags_filter=echo
3776 ldflags_filter=echo
3777
3778 AS_C='-c'
3779 AS_O='-o $@'
3780 CC_C='-c'
3781 CC_E='-E -o $@'
3782 CC_O='-o $@'
3783 CXX_C='-c'
3784 CXX_O='-o $@'
3785 OBJCC_C='-c'
3786 OBJCC_E='-E -o $@'
3787 OBJCC_O='-o $@'
3788 X86ASM_O='-o $@'
3789 LD_O='-o $@'
3790 LD_LIB='-l%'
3791 LD_PATH='-L'
3792 HOSTCC_C='-c'
3793 HOSTCC_E='-E -o $@'
3794 HOSTCC_O='-o $@'
3795 HOSTLD_O='-o $@'
3796 NVCC_C='-c'
3797 NVCC_O='-o $@'
3798
3799 host_extralibs='-lm'
3800 host_cflags_filter=echo
3801 host_ldflags_filter=echo
3802
3803 target_path='$(CURDIR)'
3804
3805 # since the object filename is not given with the -MM flag, the compiler
3806 # is only able to print the basename, and we must add the path ourselves
3807 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3808 DEPFLAGS='-MM'
3809
3810 mkdir -p ffbuild
3811
3812 # find source path
3813 if test -f configure; then
3814     source_path=.
3815 elif test -f src/configure; then
3816     source_path=src
3817 else
3818     source_path=$(cd $(dirname "$0"); pwd)
3819     case "$source_path" in
3820         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3821     esac
3822     test -e "$source_path/config.h" &&
3823         die "Out of tree builds are impossible with config.h in source dir."
3824 fi
3825
3826 for v in "$@"; do
3827     r=${v#*=}
3828     l=${v%"$r"}
3829     r=$(sh_quote "$r")
3830     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3831 done
3832
3833 find_things_extern(){
3834     thing=$1
3835     pattern=$2
3836     file=$source_path/$3
3837     out=${4:-$thing}
3838     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$out/p" "$file"
3839 }
3840
3841 find_filters_extern(){
3842     file=$source_path/$1
3843     sed -n 's/^extern AVFilter ff_[avfsinkrc]\{2,5\}_\([[:alnum:]_]\{1,\}\);/\1_filter/p' $file
3844 }
3845
3846 FILTER_LIST=$(find_filters_extern libavfilter/allfilters.c)
3847 OUTDEV_LIST=$(find_things_extern muxer AVOutputFormat libavdevice/alldevices.c outdev)
3848 INDEV_LIST=$(find_things_extern demuxer AVInputFormat libavdevice/alldevices.c indev)
3849 MUXER_LIST=$(find_things_extern muxer AVOutputFormat libavformat/allformats.c)
3850 DEMUXER_LIST=$(find_things_extern demuxer AVInputFormat libavformat/allformats.c)
3851 ENCODER_LIST=$(find_things_extern encoder AVCodec libavcodec/allcodecs.c)
3852 DECODER_LIST=$(find_things_extern decoder AVCodec libavcodec/allcodecs.c)
3853 CODEC_LIST="
3854     $ENCODER_LIST
3855     $DECODER_LIST
3856 "
3857 PARSER_LIST=$(find_things_extern parser AVCodecParser libavcodec/parsers.c)
3858 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3859 HWACCEL_LIST=$(find_things_extern hwaccel AVHWAccel libavcodec/hwaccels.h)
3860 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3861
3862 AVCODEC_COMPONENTS_LIST="
3863     $BSF_LIST
3864     $DECODER_LIST
3865     $ENCODER_LIST
3866     $HWACCEL_LIST
3867     $PARSER_LIST
3868 "
3869
3870 AVDEVICE_COMPONENTS_LIST="
3871     $INDEV_LIST
3872     $OUTDEV_LIST
3873 "
3874
3875 AVFILTER_COMPONENTS_LIST="
3876     $FILTER_LIST
3877 "
3878
3879 AVFORMAT_COMPONENTS_LIST="
3880     $DEMUXER_LIST
3881     $MUXER_LIST
3882     $PROTOCOL_LIST
3883 "
3884
3885 ALL_COMPONENTS="
3886     $AVCODEC_COMPONENTS_LIST
3887     $AVDEVICE_COMPONENTS_LIST
3888     $AVFILTER_COMPONENTS_LIST
3889     $AVFORMAT_COMPONENTS_LIST
3890 "
3891
3892 for n in $COMPONENT_LIST; do
3893     v=$(toupper ${n%s})_LIST
3894     eval enable \$$v
3895     eval ${n}_if_any="\$$v"
3896 done
3897
3898 enable $ARCH_EXT_LIST
3899
3900 die_unknown(){
3901     echo "Unknown option \"$1\"."
3902     echo "See $0 --help for available options."
3903     exit 1
3904 }
3905
3906 print_in_columns() {
3907     tr ' ' '\n' | sort | tr '\r\n' '  ' | awk -v col_width=24 -v width="$ncols" '
3908     {
3909         num_cols = width > col_width ? int(width / col_width) : 1;
3910         num_rows = int((NF + num_cols-1) / num_cols);
3911         y = x = 1;
3912         for (y = 1; y <= num_rows; y++) {
3913             i = y;
3914             for (x = 1; x <= num_cols; x++) {
3915                 if (i <= NF) {
3916                   line = sprintf("%s%-" col_width "s", line, $i);
3917                 }
3918                 i = i + num_rows;
3919             }
3920             print line; line = "";
3921         }
3922     }' | sed 's/ *$//'
3923 }
3924
3925 show_list() {
3926     suffix=_$1
3927     shift
3928     echo $* | sed s/$suffix//g | print_in_columns
3929     exit 0
3930 }
3931
3932 rand_list(){
3933     IFS=', '
3934     set -- $*
3935     unset IFS
3936     for thing; do
3937         comp=${thing%:*}
3938         prob=${thing#$comp}
3939         prob=${prob#:}
3940         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3941         echo "prob ${prob:-0.5}"
3942         printf '%s\n' $comp
3943     done
3944 }
3945
3946 do_random(){
3947     action=$1
3948     shift
3949     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3950     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3951 }
3952
3953 for opt do
3954     optval="${opt#*=}"
3955     case "$opt" in
3956         --extra-ldflags=*)
3957             add_ldflags $optval
3958         ;;
3959         --extra-ldexeflags=*)
3960             add_ldexeflags $optval
3961         ;;
3962         --extra-ldsoflags=*)
3963             add_ldsoflags $optval
3964         ;;
3965         --extra-ldlibflags=*)
3966             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3967                  "removed in the future. Use --extra-ldsoflags instead."
3968             add_ldsoflags $optval
3969         ;;
3970         --extra-libs=*)
3971             add_extralibs $optval
3972         ;;
3973         --disable-devices)
3974             disable $INDEV_LIST $OUTDEV_LIST
3975         ;;
3976         --enable-debug=*)
3977             debuglevel="$optval"
3978         ;;
3979         --disable-programs)
3980             disable $PROGRAM_LIST
3981         ;;
3982         --disable-everything)
3983             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3984         ;;
3985         --disable-all)
3986             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3987             disable $LIBRARY_LIST $PROGRAM_LIST doc
3988             enable avutil
3989         ;;
3990         --enable-random|--disable-random)
3991             action=${opt%%-random}
3992             do_random ${action#--} $COMPONENT_LIST
3993         ;;
3994         --enable-random=*|--disable-random=*)
3995             action=${opt%%-random=*}
3996             do_random ${action#--} $optval
3997         ;;
3998         --enable-sdl)
3999             enable sdl2
4000         ;;
4001         --enable-*=*|--disable-*=*)
4002             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
4003             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
4004             eval list=\$$(toupper $thing)_LIST
4005             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
4006             list=$(filter "$name" $list)
4007             [ "$list" = "" ] && warn "Option $opt did not match anything"
4008             test $action = enable && warn_if_gets_disabled $list
4009             $action $list
4010         ;;
4011         --enable-yasm|--disable-yasm)
4012             warn "The ${opt} option is only provided for compatibility and will be\n"\
4013                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
4014             test $opt = --enable-yasm && x86asm=yes || x86asm=no
4015         ;;
4016         --yasmexe=*)
4017             warn "The --yasmexe option is only provided for compatibility and will be\n"\
4018                  "removed in the future. Use --x86asmexe instead."
4019             x86asmexe="$optval"
4020         ;;
4021         --enable-?*|--disable-?*)
4022             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
4023             if is_in $option $COMPONENT_LIST; then
4024                 test $action = disable && action=unset
4025                 eval $action \$$(toupper ${option%s})_LIST
4026             elif is_in $option $CMDLINE_SELECT; then
4027                 $action $option
4028             else
4029                 die_unknown $opt
4030             fi
4031         ;;
4032         --list-*)
4033             NAME="${opt#--list-}"
4034             is_in $NAME $COMPONENT_LIST || die_unknown $opt
4035             NAME=${NAME%s}
4036             eval show_list $NAME \$$(toupper $NAME)_LIST
4037         ;;
4038         --help|-h) show_help
4039         ;;
4040         --quiet|-q) quiet=yes
4041         ;;
4042         --fatal-warnings) enable fatal_warnings
4043         ;;
4044         --libfuzzer=*)
4045             libfuzzer_path="$optval"
4046         ;;
4047         *)
4048             optname="${opt%%=*}"
4049             optname="${optname#--}"
4050             optname=$(echo "$optname" | sed 's/-/_/g')
4051             if is_in $optname $CMDLINE_SET; then
4052                 eval $optname='$optval'
4053             elif is_in $optname $CMDLINE_APPEND; then
4054                 append $optname "$optval"
4055             else
4056                 die_unknown $opt
4057             fi
4058         ;;
4059     esac
4060 done
4061
4062 for e in $env; do
4063     eval "export $e"
4064 done
4065
4066 if disabled autodetect; then
4067
4068     # Unless iconv is explicitely disabled by the user, we still want to probe
4069     # for the iconv from the libc.
4070     disabled iconv || enable libc_iconv
4071
4072     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
4073     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
4074 fi
4075 # Mark specifically enabled, but normally autodetected libraries as requested.
4076 for lib in $AUTODETECT_LIBS; do
4077     enabled $lib && request $lib
4078 done
4079 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
4080 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
4081 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
4082
4083 disabled logging && logfile=/dev/null
4084
4085 # command line configuration sanity checks
4086
4087 # we need to build at least one lib type
4088 if ! enabled_any static shared; then
4089     cat <<EOF
4090 At least one library type must be built.
4091 Specify --enable-static to build the static libraries or --enable-shared to
4092 build the shared libraries as well. To only build the shared libraries specify
4093 --disable-static in addition to --enable-shared.
4094 EOF
4095     exit 1
4096 fi
4097
4098 die_license_disabled() {
4099     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
4100 }
4101
4102 die_license_disabled_gpl() {
4103     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
4104 }
4105
4106 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
4107 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
4108
4109 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
4110 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
4111
4112 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4113
4114 if enabled nonfree; then
4115     license="nonfree and unredistributable"
4116 elif enabled gplv3; then
4117     license="GPL version 3 or later"
4118 elif enabled lgplv3; then
4119     license="LGPL version 3 or later"
4120 elif enabled gpl; then
4121     license="GPL version 2 or later"
4122 else
4123     license="LGPL version 2.1 or later"
4124 fi
4125
4126 enabled_all gnutls openssl &&
4127     die "GnuTLS and OpenSSL must not be enabled at the same time."
4128
4129 enabled_all gnutls mbedtls &&
4130     die "GnuTLS and mbedTLS must not be enabled at the same time."
4131
4132 enabled_all openssl mbedtls &&
4133     die "OpenSSL and mbedTLS must not be enabled at the same time."
4134
4135 # Disable all the library-specific components if the library itself
4136 # is disabled, see AVCODEC_LIST and following _LIST variables.
4137
4138 disable_components(){
4139     disabled ${1} && disable $(
4140         eval components="\$$(toupper ${1})_COMPONENTS"
4141         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
4142     )
4143 }
4144
4145 map 'disable_components $v' $LIBRARY_LIST
4146
4147 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
4148 set >> $logfile
4149
4150 test -n "$valgrind" && toolchain="valgrind-memcheck"
4151
4152 enabled ossfuzz && ! echo $CFLAGS | grep -q -- "-fsanitize="  && ! echo $CFLAGS | grep -q -- "-fcoverage-mapping" &&{
4153     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
4154     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
4155 }
4156
4157 case "$toolchain" in
4158     *-asan)
4159         cc_default="${toolchain%-asan}"
4160         add_cflags  -fsanitize=address
4161         add_ldflags -fsanitize=address
4162     ;;
4163     *-msan)
4164         cc_default="${toolchain%-msan}"
4165         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
4166         add_ldflags -fsanitize=memory
4167     ;;
4168     *-tsan)
4169         cc_default="${toolchain%-tsan}"
4170         add_cflags  -fsanitize=thread
4171         add_ldflags -fsanitize=thread
4172         case "$toolchain" in
4173             gcc-tsan)
4174                 add_cflags  -fPIC
4175                 add_ldflags -fPIC
4176                 ;;
4177         esac
4178     ;;
4179     *-usan)
4180         cc_default="${toolchain%-usan}"
4181         add_cflags  -fsanitize=undefined
4182         add_ldflags -fsanitize=undefined
4183     ;;
4184     valgrind-*)
4185         target_exec_default="valgrind"
4186         case "$toolchain" in
4187             valgrind-massif)
4188                 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"
4189                 ;;
4190             valgrind-memcheck)
4191                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
4192                 ;;
4193         esac
4194     ;;
4195     msvc)
4196         # Check whether the current MSVC version needs the C99 converter.
4197         # From MSVC 2013 (compiler major version 18) onwards, it does actually
4198         # support enough of C99 to build ffmpeg. Default to the new
4199         # behaviour if the regexp was unable to match anything, since this
4200         # successfully parses the version number of existing supported
4201         # versions that require the converter (MSVC 2010 and 2012).
4202         cl_major_ver=$(cl.exe 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
4203         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
4204             cc_default="cl.exe"
4205             cxx_default="cl.exe"
4206         else
4207             die "Unsupported MSVC version (2013 or newer required)"
4208         fi
4209         ld_default="$source_path/compat/windows/mslink"
4210         nm_default="dumpbin.exe -symbols"
4211         ar_default="lib.exe"
4212         case "$arch" in
4213         aarch64|arm64)
4214             as_default="armasm64.exe"
4215             ;;
4216         arm*)
4217             as_default="armasm.exe"
4218             ;;
4219         esac
4220         target_os_default="win32"
4221         # Use a relative path for TMPDIR. This makes sure all the
4222         # ffconf temp files are written with a relative path, avoiding
4223         # issues with msys/win32 path conversion for MSVC parameters
4224         # such as -Fo<file> or -out:<file>.
4225         TMPDIR=.
4226     ;;
4227     icl)
4228         cc_default="icl"
4229         ld_default="xilink"
4230         nm_default="dumpbin -symbols"
4231         ar_default="xilib"
4232         target_os_default="win32"
4233         TMPDIR=.
4234     ;;
4235     gcov)
4236         add_cflags  -fprofile-arcs -ftest-coverage
4237         add_ldflags -fprofile-arcs -ftest-coverage
4238     ;;
4239     llvm-cov)
4240         add_cflags -fprofile-arcs -ftest-coverage
4241         add_ldflags --coverage
4242     ;;
4243     hardened)
4244         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
4245         add_cflags   -fno-strict-overflow -fstack-protector-all
4246         add_ldflags  -Wl,-z,relro -Wl,-z,now
4247         add_cflags   -fPIE
4248         add_ldexeflags -fPIE -pie
4249     ;;
4250     ?*)
4251         die "Unknown toolchain $toolchain"
4252     ;;
4253 esac
4254
4255 if test -n "$cross_prefix"; then
4256     test -n "$arch" && test -n "$target_os" ||
4257         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
4258     enable cross_compile
4259 fi
4260
4261 set_default target_os
4262 if test "$target_os" = android; then
4263     cc_default="clang"
4264 fi
4265
4266 ar_default="${cross_prefix}${ar_default}"
4267 cc_default="${cross_prefix}${cc_default}"
4268 cxx_default="${cross_prefix}${cxx_default}"
4269 nm_default="${cross_prefix}${nm_default}"
4270 pkg_config_default="${cross_prefix}${pkg_config_default}"
4271 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
4272     ranlib_default="${cross_prefix}${ranlib_default} -D"
4273 else
4274     ranlib_default="${cross_prefix}${ranlib_default}"
4275 fi
4276 strip_default="${cross_prefix}${strip_default}"
4277 windres_default="${cross_prefix}${windres_default}"
4278
4279 sysinclude_default="${sysroot}/usr/include"
4280
4281 if enabled cuda_sdk; then
4282     warn "Option --enable-cuda-sdk is deprecated. Use --enable-cuda-nvcc instead."
4283     enable cuda_nvcc
4284 fi
4285
4286 if enabled cuda_nvcc; then
4287     nvcc_default="nvcc"
4288     nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
4289 else
4290     nvcc_default="clang"
4291     nvccflags_default="--cuda-gpu-arch=sm_30 -O2"
4292     NVCC_C=""
4293 fi
4294
4295 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
4296     target_exec x86asmexe nvcc
4297 enabled cross_compile || host_cc_default=$cc
4298 set_default host_cc
4299
4300 pkg_config_fail_message=""
4301 if ! $pkg_config --version >/dev/null 2>&1; then
4302     warn "$pkg_config not found, library detection may fail."
4303     pkg_config=false
4304 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
4305     pkg_config_fail_message="
4306 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
4307 fi
4308
4309 if test $doxygen != $doxygen_default && \
4310   ! $doxygen --version >/dev/null 2>&1; then
4311     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
4312 fi
4313
4314 exesuf() {
4315     case $1 in
4316         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
4317     esac
4318 }
4319
4320 EXESUF=$(exesuf $target_os)
4321 HOSTEXESUF=$(exesuf $host_os)
4322
4323 # set temporary file name
4324 : ${TMPDIR:=$TEMPDIR}
4325 : ${TMPDIR:=$TMP}
4326 : ${TMPDIR:=/tmp}
4327
4328 if [ -n "$tempprefix" ] ; then
4329     mktemp(){
4330         tmpname="$tempprefix.${HOSTNAME}.${UID}"
4331         echo "$tmpname"
4332         mkdir "$tmpname"
4333     }
4334 elif ! test_cmd mktemp -u XXXXXX; then
4335     # simple replacement for missing mktemp
4336     # NOT SAFE FOR GENERAL USE
4337     mktemp(){
4338         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
4339         echo "$tmpname"
4340         mkdir "$tmpname"
4341     }
4342 fi
4343
4344 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
4345     die "Unable to create temporary directory in $TMPDIR."
4346
4347 tmpfile(){
4348     tmp="${FFTMPDIR}/test"$2
4349     (set -C; exec > $tmp) 2> /dev/null ||
4350         die "Unable to create temporary file in $FFTMPDIR."
4351     eval $1=$tmp
4352 }
4353
4354 trap 'rm -rf -- "$FFTMPDIR"' EXIT
4355 trap 'exit 2' INT
4356
4357 tmpfile TMPASM .asm
4358 tmpfile TMPC   .c
4359 tmpfile TMPCPP .cpp
4360 tmpfile TMPE   $EXESUF
4361 tmpfile TMPH   .h
4362 tmpfile TMPM   .m
4363 tmpfile TMPCU  .cu
4364 tmpfile TMPO   .o
4365 tmpfile TMPS   .S
4366 tmpfile TMPSH  .sh
4367 tmpfile TMPV   .ver
4368
4369 unset -f mktemp
4370
4371 chmod +x $TMPE
4372
4373 # make sure we can execute files in $TMPDIR
4374 cat > $TMPSH 2>> $logfile <<EOF
4375 #! /bin/sh
4376 EOF
4377 chmod +x $TMPSH >> $logfile 2>&1
4378 if ! $TMPSH >> $logfile 2>&1; then
4379     cat <<EOF
4380 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
4381 variable to another directory and make sure that it is not mounted noexec.
4382 EOF
4383     die "Sanity test failed."
4384 fi
4385
4386 armasm_flags(){
4387     for flag; do
4388         case $flag in
4389             # Filter out MSVC cl.exe options from cflags that shouldn't
4390             # be passed to gas-preprocessor
4391             -M[TD]*)                                            ;;
4392             *)                  echo $flag                      ;;
4393         esac
4394    done
4395 }
4396
4397 cparser_flags(){
4398     for flag; do
4399         case $flag in
4400             -Wno-switch)             echo -Wno-switch-enum ;;
4401             -Wno-format-zero-length) ;;
4402             -Wdisabled-optimization) ;;
4403             -Wno-pointer-sign)       echo -Wno-other ;;
4404             *)                       echo $flag ;;
4405         esac
4406     done
4407 }
4408
4409 msvc_common_flags(){
4410     for flag; do
4411         case $flag in
4412             # In addition to specifying certain flags under the compiler
4413             # specific filters, they must be specified here as well or else the
4414             # generic catch all at the bottom will print the original flag.
4415             -Wall)                ;;
4416             -Wextra)              ;;
4417             -std=c99)             ;;
4418             # Common flags
4419             -fomit-frame-pointer) ;;
4420             -g)                   echo -Z7 ;;
4421             -fno-math-errno)      ;;
4422             -fno-common)          ;;
4423             -fno-signed-zeros)    ;;
4424             -fPIC)                ;;
4425             -mthumb)              ;;
4426             -march=*)             ;;
4427             -lz)                  echo zlib.lib ;;
4428             -lx264)               echo libx264.lib ;;
4429             -lstdc++)             ;;
4430             -l*)                  echo ${flag#-l}.lib ;;
4431             -LARGEADDRESSAWARE)   echo $flag ;;
4432             -L*)                  echo -libpath:${flag#-L} ;;
4433             *)                    echo $flag ;;
4434         esac
4435     done
4436 }
4437
4438 msvc_flags(){
4439     msvc_common_flags "$@"
4440     for flag; do
4441         case $flag in
4442             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4443                                        -wd4554 ;;
4444             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4445                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4446                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4447                                        -wd4307 \
4448                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4449         esac
4450     done
4451 }
4452
4453 icl_flags(){
4454     msvc_common_flags "$@"
4455     for flag; do
4456         case $flag in
4457             # Despite what Intel's documentation says -Wall, which is supported
4458             # on Windows, does enable remarks so disable them here.
4459             -Wall)                echo $flag -Qdiag-disable:remark ;;
4460             -std=c99)             echo -Qstd=c99 ;;
4461             -flto)                echo -ipo ;;
4462         esac
4463     done
4464 }
4465
4466 icc_flags(){
4467     for flag; do
4468         case $flag in
4469             -flto)                echo -ipo ;;
4470             *)                    echo $flag ;;
4471         esac
4472     done
4473 }
4474
4475 suncc_flags(){
4476     for flag; do
4477         case $flag in
4478             -march=*|-mcpu=*)
4479                 case "${flag#*=}" in
4480                     native)                   echo -xtarget=native       ;;
4481                     v9|niagara)               echo -xarch=sparc          ;;
4482                     ultrasparc)               echo -xarch=sparcvis       ;;
4483                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4484                     i586|pentium)             echo -xchip=pentium        ;;
4485                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4486                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4487                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4488                     pentium4*)          echo -xtarget=pentium4           ;;
4489                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4490                     *-sse3)             echo -xarch=sse3                 ;;
4491                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4492                     bonnell)                   echo -xarch=ssse3         ;;
4493                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4494                     westmere)                  echo -xtarget=westmere    ;;
4495                     silvermont)                echo -xarch=sse4_2        ;;
4496                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4497                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4498                                                echo -xarch=avx           ;;
4499                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4500                     btver1)                    echo -xarch=amdsse4a      ;;
4501                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4502                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4503                     k8|opteron|athlon64|athlon-fx)
4504                                                echo -xarch=sse2a         ;;
4505                     athlon*)                   echo -xarch=pentium_proa  ;;
4506                 esac
4507                 ;;
4508             -std=c99)             echo -xc99              ;;
4509             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4510             -fPIC)                echo -KPIC -xcode=pic32 ;;
4511             -W*,*)                echo $flag              ;;
4512             -f*-*|-W*|-mimpure-text)                      ;;
4513             -shared)              echo -G                 ;;
4514             *)                    echo $flag              ;;
4515         esac
4516     done
4517 }
4518
4519 probe_cc(){
4520     pfx=$1
4521     _cc=$2
4522     first=$3
4523
4524     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4525     unset _ld_o _ldflags _ld_lib _ld_path
4526     unset _depflags _DEPCMD _DEPFLAGS
4527     _flags_filter=echo
4528
4529     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4530         true # no-op to avoid reading stdin in following checks
4531     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4532         _type=llvm_gcc
4533         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4534         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4535         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4536         _cflags_speed='-O3'
4537         _cflags_size='-Os'
4538     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4539         _type=gcc
4540         gcc_version=$($_cc --version | head -n1)
4541         gcc_basever=$($_cc -dumpversion)
4542         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4543         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4544         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4545         case $gcc_basever in
4546             2) ;;
4547             2.*) ;;
4548             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4549         esac
4550         if [ "$first" = true ]; then
4551             case $gcc_basever in
4552                 4.2*)
4553                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4554             esac
4555         fi
4556         _cflags_speed='-O3'
4557         _cflags_size='-Os'
4558     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4559         _type=icc
4560         _ident=$($_cc --version | head -n1)
4561         _depflags='-MMD'
4562         _cflags_speed='-O3'
4563         _cflags_size='-Os'
4564         _cflags_noopt='-O1'
4565         _flags_filter=icc_flags
4566     elif $_cc -v 2>&1 | grep -q xlc; then
4567         _type=xlc
4568         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4569         _cflags_speed='-O5'
4570         _cflags_size='-O5 -qcompact'
4571     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4572         test -d "$sysroot" || die "No valid sysroot specified."
4573         _type=armcc
4574         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4575         armcc_conf="$PWD/armcc.conf"
4576         $_cc --arm_linux_configure                 \
4577              --arm_linux_config_file="$armcc_conf" \
4578              --configure_sysroot="$sysroot"        \
4579              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4580              die "Error creating armcc configuration file."
4581         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4582         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4583         as_default="${cross_prefix}gcc"
4584         _depflags='-MMD'
4585         _cflags_speed='-O3'
4586         _cflags_size='-Os'
4587     elif $_cc -v 2>&1 | grep -q clang && ! $_cc -? > /dev/null 2>&1; then
4588         _type=clang
4589         _ident=$($_cc --version 2>/dev/null | head -n1)
4590         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4591         _cflags_speed='-O3'
4592         _cflags_size='-Oz'
4593     elif $_cc -V 2>&1 | grep -q Sun; then
4594         _type=suncc
4595         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4596         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4597         _DEPFLAGS='-xM1 -xc99'
4598         _ldflags='-std=c99'
4599         _cflags_speed='-O5'
4600         _cflags_size='-O5 -xspace'
4601         _flags_filter=suncc_flags
4602     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4603         _type=pathscale
4604         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4605         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4606         _cflags_speed='-O2'
4607         _cflags_size='-Os'
4608         _flags_filter='filter_out -Wdisabled-optimization'
4609     elif $_cc -v 2>&1 | grep -q Open64; then
4610         _type=open64
4611         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4612         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4613         _cflags_speed='-O2'
4614         _cflags_size='-Os'
4615         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4616     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4617         _type=armasm
4618         _ident=$($_cc | head -n1)
4619         # 4509: "This form of conditional instruction is deprecated"
4620         _flags="-nologo -ignore 4509"
4621         _flags_filter=armasm_flags
4622     elif $_cc 2>&1 | grep -q Intel; then
4623         _type=icl
4624         _ident=$($_cc 2>&1 | head -n1)
4625         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4626         # Not only is O3 broken on 13.x+ but it is slower on all previous
4627         # versions (tested) as well.
4628         _cflags_speed="-O2"
4629         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4630         if $_cc 2>&1 | grep -q Linker; then
4631             _ld_o='-out:$@'
4632         else
4633             _ld_o='-Fe$@'
4634         fi
4635         _cc_o='-Fo$@'
4636         _cc_e='-P'
4637         _flags_filter=icl_flags
4638         _ld_lib='lib%.a'
4639         _ld_path='-libpath:'
4640         # -Qdiag-error to make icl error when seeing certain unknown arguments
4641         _flags='-nologo -Qdiag-error:4044,10157'
4642         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4643         # with MSVC which enables it by default.
4644         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4645         disable stripping
4646     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4647         # lld can emulate multiple different linkers; in ms link.exe mode,
4648         # the -? parameter gives the help output which contains an identifyable
4649         # string, while it gives an error in other modes.
4650         _type=lld-link
4651         # The link.exe mode doesn't have a switch for getting the version,
4652         # but we can force it back to gnu mode and get the version from there.
4653         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4654         _ld_o='-out:$@'
4655         _flags_filter=msvc_flags
4656         _ld_lib='lib%.a'
4657         _ld_path='-libpath:'
4658     elif $_cc -nologo- 2>&1 | grep -q Microsoft || { $_cc -v 2>&1 | grep -q clang && $_cc -? > /dev/null 2>&1; }; then
4659         _type=msvc
4660         _ident=$($_cc 2>&1 | head -n1 | tr -d '\r')
4661         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4662         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4663         _cflags_speed="-O2"
4664         _cflags_size="-O1"
4665         _cflags_noopt="-O1"
4666         if $_cc -nologo- 2>&1 | grep -q Linker; then
4667             _ld_o='-out:$@'
4668         else
4669             _ld_o='-Fe$@'
4670         fi
4671         _cc_o='-Fo$@'
4672         _cc_e='-P -Fi$@'
4673         _flags_filter=msvc_flags
4674         _ld_lib='lib%.a'
4675         _ld_path='-libpath:'
4676         _flags='-nologo'
4677         disable stripping
4678     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4679         _type=cparser
4680         _ident=$($_cc --version | head -n1)
4681         _depflags='-MMD'
4682         _cflags_speed='-O4'
4683         _cflags_size='-O2'
4684         _flags_filter=cparser_flags
4685     fi
4686
4687     eval ${pfx}_type=\$_type
4688     eval ${pfx}_ident=\$_ident
4689 }
4690
4691 set_ccvars(){
4692     eval ${1}_C=\${_cc_c-\${${1}_C}}
4693     eval ${1}_E=\${_cc_e-\${${1}_E}}
4694     eval ${1}_O=\${_cc_o-\${${1}_O}}
4695
4696     if [ -n "$_depflags" ]; then
4697         eval ${1}_DEPFLAGS=\$_depflags
4698     else
4699         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4700         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4701         eval DEP${1}FLAGS=\$_flags
4702     fi
4703 }
4704
4705 probe_cc cc "$cc" "true"
4706 cflags_filter=$_flags_filter
4707 cflags_speed=$_cflags_speed
4708 cflags_size=$_cflags_size
4709 cflags_noopt=$_cflags_noopt
4710 add_cflags $_flags $_cflags
4711 cc_ldflags=$_ldflags
4712 set_ccvars CC
4713 set_ccvars CXX
4714
4715 probe_cc hostcc "$host_cc"
4716 host_cflags_filter=$_flags_filter
4717 host_cflags_speed=$_cflags_speed
4718 add_host_cflags  $_flags $_cflags
4719 set_ccvars HOSTCC
4720
4721 test -n "$cc_type" && enable $cc_type ||
4722     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4723
4724 : ${as_default:=$cc}
4725 : ${objcc_default:=$cc}
4726 : ${dep_cc_default:=$cc}
4727 : ${ld_default:=$cc}
4728 : ${host_ld_default:=$host_cc}
4729 set_default ar as objcc dep_cc ld ln_s host_ld windres
4730
4731 probe_cc as "$as"
4732 asflags_filter=$_flags_filter
4733 add_asflags $_flags $_cflags
4734 set_ccvars AS
4735
4736 probe_cc objcc "$objcc"
4737 objcflags_filter=$_flags_filter
4738 add_objcflags $_flags $_cflags
4739 set_ccvars OBJC
4740
4741 probe_cc ld "$ld"
4742 ldflags_filter=$_flags_filter
4743 add_ldflags $_flags $_ldflags
4744 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4745 LD_O=${_ld_o-$LD_O}
4746 LD_LIB=${_ld_lib-$LD_LIB}
4747 LD_PATH=${_ld_path-$LD_PATH}
4748
4749 probe_cc hostld "$host_ld"
4750 host_ldflags_filter=$_flags_filter
4751 add_host_ldflags $_flags $_ldflags
4752 HOSTLD_O=${_ld_o-$HOSTLD_O}
4753
4754 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4755     probe_cc depcc "$dep_cc"
4756     CCDEP=${_DEPCMD:-$DEPCMD}
4757     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4758     DEPCCFLAGS=$_flags
4759 fi
4760
4761 if $ar 2>&1 | grep -q Microsoft; then
4762     arflags="-nologo"
4763     ar_o='-out:$@'
4764 elif $ar 2>&1 | grep -q "\[D\] "; then
4765     arflags="rcD"
4766     ar_o='$@'
4767 else
4768     arflags="rc"
4769     ar_o='$@'
4770 fi
4771
4772 add_cflags $extra_cflags
4773 add_cxxflags $extra_cxxflags
4774 add_objcflags $extra_objcflags
4775 add_asflags $extra_cflags
4776
4777 if test -n "$sysroot"; then
4778     case "$cc_type" in
4779         gcc|llvm_gcc|clang)
4780             add_cppflags --sysroot="$sysroot"
4781             add_ldflags --sysroot="$sysroot"
4782         ;;
4783     esac
4784 fi
4785
4786 if test "$cpu" = host; then
4787     enabled cross_compile &&
4788         die "--cpu=host makes no sense when cross-compiling."
4789
4790     case "$cc_type" in
4791         gcc|llvm_gcc)
4792             check_native(){
4793                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4794                 sed -n "/cc1.*$1=/{
4795                             s/.*$1=\\([^ ]*\\).*/\\1/
4796                             p
4797                             q
4798                         }" $TMPE
4799             }
4800             cpu=$(check_native -march || check_native -mcpu)
4801         ;;
4802         clang)
4803             check_native(){
4804                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4805                 sed -n "/cc1.*-target-cpu /{
4806                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4807                             p
4808                             q
4809                         }" $TMPE
4810             }
4811             cpu=$(check_native -march)
4812         ;;
4813     esac
4814
4815     test "${cpu:-host}" = host &&
4816         die "--cpu=host not supported with compiler $cc"
4817 fi
4818
4819 # Deal with common $arch aliases
4820 case "$arch" in
4821     aarch64|arm64)
4822         arch="aarch64"
4823     ;;
4824     arm*|iPad*|iPhone*)
4825         arch="arm"
4826     ;;
4827     mips*|IP*)
4828         case "$arch" in
4829         *el)
4830             add_cppflags -EL
4831             add_ldflags -EL
4832         ;;
4833         *eb)
4834             add_cppflags -EB
4835             add_ldflags -EB
4836         ;;
4837         esac
4838         arch="mips"
4839     ;;
4840     parisc*|hppa*)
4841         arch="parisc"
4842     ;;
4843     "Power Macintosh"|ppc*|powerpc*)
4844         arch="ppc"
4845     ;;
4846     s390|s390x)
4847         arch="s390"
4848     ;;
4849     sh4|sh)
4850         arch="sh4"
4851     ;;
4852     sun4*|sparc*)
4853         arch="sparc"
4854     ;;
4855     tilegx|tile-gx)
4856         arch="tilegx"
4857     ;;
4858     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4859         arch="x86"
4860     ;;
4861 esac
4862
4863 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4864 enable $arch
4865
4866 # Add processor-specific flags
4867 if enabled aarch64; then
4868
4869     case $cpu in
4870         armv*)
4871             cpuflags="-march=$cpu"
4872         ;;
4873         *)
4874             cpuflags="-mcpu=$cpu"
4875         ;;
4876     esac
4877
4878 elif enabled alpha; then
4879
4880     cpuflags="-mcpu=$cpu"
4881
4882 elif enabled arm; then
4883
4884     check_arm_arch() {
4885         test_cpp_condition stddef.h \
4886             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4887             $cpuflags
4888     }
4889
4890     probe_arm_arch() {
4891         if   check_arm_arch 4;        then echo armv4
4892         elif check_arm_arch 4T;       then echo armv4t
4893         elif check_arm_arch 5;        then echo armv5
4894         elif check_arm_arch 5E;       then echo armv5e
4895         elif check_arm_arch 5T;       then echo armv5t
4896         elif check_arm_arch 5TE;      then echo armv5te
4897         elif check_arm_arch 5TEJ;     then echo armv5te
4898         elif check_arm_arch 6;        then echo armv6
4899         elif check_arm_arch 6J;       then echo armv6j
4900         elif check_arm_arch 6K;       then echo armv6k
4901         elif check_arm_arch 6Z;       then echo armv6z
4902         elif check_arm_arch 6KZ;      then echo armv6zk
4903         elif check_arm_arch 6ZK;      then echo armv6zk
4904         elif check_arm_arch 6T2;      then echo armv6t2
4905         elif check_arm_arch 7;        then echo armv7
4906         elif check_arm_arch 7A  7_A;  then echo armv7-a
4907         elif check_arm_arch 7S;       then echo armv7-a
4908         elif check_arm_arch 7R  7_R;  then echo armv7-r
4909         elif check_arm_arch 7M  7_M;  then echo armv7-m
4910         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4911         elif check_arm_arch 8A  8_A;  then echo armv8-a
4912         fi
4913     }
4914
4915     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4916
4917     case $cpu in
4918         armv*)
4919             cpuflags="-march=$cpu"
4920             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4921         ;;
4922         *)
4923             cpuflags="-mcpu=$cpu"
4924             case $cpu in
4925                 cortex-a*)                               subarch=armv7a  ;;
4926                 cortex-r*)                               subarch=armv7r  ;;
4927                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4928                 arm11*)                                  subarch=armv6   ;;
4929                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4930                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4931                 *)                             subarch=$(probe_arm_arch) ;;
4932             esac
4933         ;;
4934     esac
4935
4936     case "$subarch" in
4937         armv5t*)    enable fast_clz                ;;
4938         armv[6-8]*)
4939             enable fast_clz
4940             disabled fast_unaligned || enable fast_unaligned
4941             ;;
4942     esac
4943
4944 elif enabled avr32; then
4945
4946     case $cpu in
4947         ap7[02]0[0-2])
4948             subarch="avr32_ap"
4949             cpuflags="-mpart=$cpu"
4950         ;;
4951         ap)
4952             subarch="avr32_ap"
4953             cpuflags="-march=$cpu"
4954         ;;
4955         uc3[ab]*)
4956             subarch="avr32_uc"
4957             cpuflags="-mcpu=$cpu"
4958         ;;
4959         uc)
4960             subarch="avr32_uc"
4961             cpuflags="-march=$cpu"
4962         ;;
4963     esac
4964
4965 elif enabled bfin; then
4966
4967     cpuflags="-mcpu=$cpu"
4968
4969 elif enabled mips; then
4970
4971     cpuflags="-march=$cpu"
4972
4973     if [ "$cpu" != "generic" ]; then
4974         disable mips32r2
4975         disable mips32r5
4976         disable mips64r2
4977         disable mips32r6
4978         disable mips64r6
4979         disable loongson2
4980         disable loongson3
4981
4982         case $cpu in
4983             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4984                 enable mips32r2
4985                 disable msa
4986             ;;
4987             p5600|i6400|p6600)
4988                 disable mipsdsp
4989                 disable mipsdspr2
4990             ;;
4991             loongson*)
4992                 enable loongson2
4993                 enable loongson3
4994                 enable local_aligned
4995                 enable simd_align_16
4996                 enable fast_64bit
4997                 enable fast_clz
4998                 enable fast_cmov
4999                 enable fast_unaligned
5000                 disable aligned_stack
5001                 disable mipsdsp
5002                 disable mipsdspr2
5003                 # When gcc version less than 5.3.0, add -fno-expensive-optimizations flag.
5004                 if [ $cc == gcc ]; then
5005                     gcc_version=$(gcc -dumpversion)
5006                     if [ "$(echo "$gcc_version 5.3.0" | tr " " "\n" | sort -rV | head -n 1)" == "$gcc_version" ]; then
5007                         expensive_optimization_flag=""
5008                     else
5009                         expensive_optimization_flag="-fno-expensive-optimizations"
5010                     fi
5011                 fi
5012                 case $cpu in
5013                     loongson3*)
5014                         cpuflags="-march=loongson3a -mhard-float $expensive_optimization_flag"
5015                     ;;
5016                     loongson2e)
5017                         cpuflags="-march=loongson2e -mhard-float $expensive_optimization_flag"
5018                     ;;
5019                     loongson2f)
5020                         cpuflags="-march=loongson2f -mhard-float $expensive_optimization_flag"
5021                     ;;
5022                 esac
5023             ;;
5024             *)
5025                 # Unknown CPU. Disable everything.
5026                 warn "unknown CPU. Disabling all MIPS optimizations."
5027                 disable mipsfpu
5028                 disable mipsdsp
5029                 disable mipsdspr2
5030                 disable msa
5031                 disable mmi
5032             ;;
5033         esac
5034
5035         case $cpu in
5036             24kc)
5037                 disable mipsfpu
5038                 disable mipsdsp
5039                 disable mipsdspr2
5040             ;;
5041             24kf*)
5042                 disable mipsdsp
5043                 disable mipsdspr2
5044             ;;
5045             24kec|34kc|1004kc)
5046                 disable mipsfpu
5047                 disable mipsdspr2
5048             ;;
5049             24kef*|34kf*|1004kf*)
5050                 disable mipsdspr2
5051             ;;
5052             74kc)
5053                 disable mipsfpu
5054             ;;
5055             p5600)
5056                 enable mips32r5
5057                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
5058             ;;
5059             i6400)
5060                 enable mips64r6
5061                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
5062             ;;
5063             p6600)
5064                 enable mips64r6
5065                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
5066             ;;
5067         esac
5068     else
5069         # We do not disable anything. Is up to the user to disable the unwanted features.
5070         warn 'generic cpu selected'
5071     fi
5072
5073 elif enabled ppc; then
5074
5075     disable ldbrx
5076
5077     case $(tolower $cpu) in
5078         601|ppc601|powerpc601)
5079             cpuflags="-mcpu=601"
5080             disable altivec
5081         ;;
5082         603*|ppc603*|powerpc603*)
5083             cpuflags="-mcpu=603"
5084             disable altivec
5085         ;;
5086         604*|ppc604*|powerpc604*)
5087             cpuflags="-mcpu=604"
5088             disable altivec
5089         ;;
5090         g3|75*|ppc75*|powerpc75*)
5091             cpuflags="-mcpu=750"
5092             disable altivec
5093         ;;
5094         g4|745*|ppc745*|powerpc745*)
5095             cpuflags="-mcpu=7450"
5096             disable vsx
5097         ;;
5098         74*|ppc74*|powerpc74*)
5099             cpuflags="-mcpu=7400"
5100             disable vsx
5101         ;;
5102         g5|970|ppc970|powerpc970)
5103             cpuflags="-mcpu=970"
5104             disable vsx
5105         ;;
5106         power[3-6]*)
5107             cpuflags="-mcpu=$cpu"
5108             disable vsx
5109         ;;
5110         power[7-8]*)
5111             cpuflags="-mcpu=$cpu"
5112         ;;
5113         cell)
5114             cpuflags="-mcpu=cell"
5115             enable ldbrx
5116             disable vsx
5117         ;;
5118         e500mc)
5119             cpuflags="-mcpu=e500mc"
5120             disable altivec
5121         ;;
5122         e500v2)
5123             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
5124             disable altivec
5125             disable dcbzl
5126         ;;
5127         e500)
5128             cpuflags="-mcpu=8540 -mhard-float"
5129             disable altivec
5130             disable dcbzl
5131         ;;
5132     esac
5133
5134 elif enabled sparc; then
5135
5136     case $cpu in
5137         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
5138             cpuflags="-mcpu=$cpu"
5139         ;;
5140         ultrasparc*|niagara[234])
5141             cpuflags="-mcpu=$cpu"
5142         ;;
5143     esac
5144
5145 elif enabled x86; then
5146
5147     case $cpu in
5148         i[345]86|pentium)
5149             cpuflags="-march=$cpu"
5150             disable i686
5151             disable mmx
5152         ;;
5153         # targets that do NOT support nopl and conditional mov (cmov)
5154         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
5155             cpuflags="-march=$cpu"
5156             disable i686
5157         ;;
5158         # targets that do support nopl and conditional mov (cmov)
5159         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
5160         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
5161         |amdfam10|barcelona|b[dt]ver*|znver*)
5162             cpuflags="-march=$cpu"
5163             enable i686
5164             enable fast_cmov
5165         ;;
5166         # targets that do support conditional mov but on which it's slow
5167         pentium4|pentium4m|prescott|nocona)
5168             cpuflags="-march=$cpu"
5169             enable i686
5170             disable fast_cmov
5171         ;;
5172     esac
5173
5174 fi
5175
5176 if [ "$cpu" != generic ]; then
5177     add_cflags  $cpuflags
5178     add_asflags $cpuflags
5179     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
5180 fi
5181
5182 # compiler sanity check
5183 test_exec <<EOF
5184 int main(void){ return 0; }
5185 EOF
5186 if test "$?" != 0; then
5187     echo "$cc is unable to create an executable file."
5188     if test -z "$cross_prefix" && ! enabled cross_compile ; then
5189         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
5190         echo "Only do this if you know what cross compiling means."
5191     fi
5192     die "C compiler test failed."
5193 fi
5194
5195 add_cppflags -D_ISOC99_SOURCE
5196 add_cxxflags -D__STDC_CONSTANT_MACROS
5197 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
5198
5199 # some compilers silently accept -std=c11, so we also need to check that the
5200 # version macro is defined properly
5201 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
5202     add_cflags -std=c11 ||
5203     check_cflags -std=c99
5204
5205 check_cppflags -D_FILE_OFFSET_BITS=64
5206 check_cppflags -D_LARGEFILE_SOURCE
5207
5208 add_host_cppflags -D_ISOC99_SOURCE
5209 check_host_cflags -std=c99
5210 check_host_cflags -Wall
5211 check_host_cflags $host_cflags_speed
5212
5213 check_64bit(){
5214     arch32=$1
5215     arch64=$2
5216     expr=${3:-'sizeof(void *) > 4'}
5217     test_code cc "" "int test[2*($expr) - 1]" &&
5218         subarch=$arch64 || subarch=$arch32
5219     enable $subarch
5220 }
5221
5222 case "$arch" in
5223     aarch64|alpha|ia64)
5224         enabled shared && enable_weak pic
5225     ;;
5226     mips)
5227         check_64bit mips mips64 '_MIPS_SIM > 1'
5228         enabled shared && enable_weak pic
5229     ;;
5230     parisc)
5231         check_64bit parisc parisc64
5232         enabled shared && enable_weak pic
5233     ;;
5234     ppc)
5235         check_64bit ppc ppc64
5236         enabled shared && enable_weak pic
5237     ;;
5238     s390)
5239         check_64bit s390 s390x
5240         enabled shared && enable_weak pic
5241     ;;
5242     sparc)
5243         check_64bit sparc sparc64
5244         enabled shared && enable_weak pic
5245     ;;
5246     x86)
5247         check_64bit x86_32 x86_64
5248         # Treat x32 as x64 for now. Note it also needs pic if shared
5249         test "$subarch" = "x86_32" && test_cpp_condition stddef.h 'defined(__x86_64__)' &&
5250             subarch=x86_64 && enable x86_64 && disable x86_32
5251         if enabled x86_64; then
5252             enabled shared && enable_weak pic
5253             objformat=elf64
5254         fi
5255     ;;
5256 esac
5257
5258 # OS specific
5259 case $target_os in
5260     aix)
5261         SHFLAGS=-shared
5262         add_cppflags '-I\$(SRC_PATH)/compat/aix'
5263         enabled shared && add_ldflags -Wl,-brtl
5264         arflags='-Xany -r -c'
5265         striptype=""
5266         ;;
5267     android)
5268         disable symver
5269         enable section_data_rel_ro
5270         add_cflags -fPIE
5271         add_ldexeflags -fPIE -pie
5272         SLIB_INSTALL_NAME='$(SLIBNAME)'
5273         SLIB_INSTALL_LINKS=
5274         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
5275         ;;
5276     haiku)
5277         prefix_default="/boot/common"
5278         network_extralibs="-lnetwork"
5279         host_extralibs=
5280         ;;
5281     sunos)
5282         SHFLAGS='-shared -Wl,-h,$$(@F)'
5283         enabled x86 && append SHFLAGS -mimpure-text
5284         network_extralibs="-lsocket -lnsl"
5285         add_cppflags -D__EXTENSIONS__
5286         # When using suncc to build, the Solaris linker will mark
5287         # an executable with each instruction set encountered by
5288         # the Solaris assembler.  As our libraries contain their own
5289         # guards for processor-specific code, instead suppress
5290         # generation of the HWCAPS ELF section on Solaris x86 only.
5291         enabled_all suncc x86 &&
5292             echo "hwcap_1 = OVERRIDE;" > mapfile &&
5293             add_ldflags -Wl,-M,mapfile
5294         nm_default='nm -P -g'
5295         striptype=""
5296         version_script='-M'
5297         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
5298         ;;
5299     netbsd)
5300         disable symver
5301         oss_indev_extralibs="-lossaudio"
5302         oss_outdev_extralibs="-lossaudio"
5303         enabled gcc || check_ldflags -Wl,-zmuldefs
5304         ;;
5305     openbsd|bitrig)
5306         disable symver
5307         striptype=""
5308         SHFLAGS='-shared'
5309         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
5310         SLIB_INSTALL_LINKS=
5311         oss_indev_extralibs="-lossaudio"
5312         oss_outdev_extralibs="-lossaudio"
5313         ;;
5314     dragonfly)
5315         disable symver
5316         ;;
5317     freebsd)
5318         ;;
5319     bsd/os)
5320         add_extralibs -lpoll -lgnugetopt
5321         strip="strip -d"
5322         ;;
5323     darwin)
5324         enabled ppc && add_asflags -force_cpusubtype_ALL
5325         install_name_dir_default='$(SHLIBDIR)'
5326         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
5327         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
5328         strip="${strip} -x"
5329         add_ldflags -Wl,-dynamic,-search_paths_first
5330         check_cflags -Werror=partial-availability
5331         SLIBSUF=".dylib"
5332         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
5333         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
5334         enabled x86_64 && objformat="macho64" || objformat="macho32"
5335         enabled_any pic shared x86_64 ||
5336             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
5337         check_headers dispatch/dispatch.h &&
5338             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
5339         if test -n "$sysroot"; then
5340             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
5341             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
5342         fi
5343         version_script='-exported_symbols_list'
5344         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
5345         ;;
5346     msys*)
5347         die "Native MSYS builds are discouraged, please use the MINGW environment."
5348         ;;
5349     mingw32*|mingw64*)
5350         target_os=mingw32
5351         LIBTARGET=i386
5352         if enabled x86_64; then
5353             LIBTARGET="i386:x86-64"
5354         elif enabled arm; then
5355             LIBTARGET="arm"
5356         elif enabled aarch64; then
5357             LIBTARGET="arm64"
5358         fi
5359         if enabled shared; then
5360             # Cannot build both shared and static libs when using dllimport.
5361             disable static
5362         fi
5363         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5364         enabled x86_32 && check_ldflags -Wl,--large-address-aware
5365         shlibdir_default="$bindir_default"
5366         SLIBPREF=""
5367         SLIBSUF=".dll"
5368         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5369         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5370         if test_cmd lib.exe -list; then
5371             SLIB_EXTRA_CMD=-'lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5372             if enabled x86_64; then
5373                 LIBTARGET=x64
5374             fi
5375         else
5376             SLIB_EXTRA_CMD=-'$(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
5377         fi
5378         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5379         SLIB_INSTALL_LINKS=
5380         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5381         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5382         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5383         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--disable-auto-image-base $$(@:$(SLIBSUF)=.def)'
5384         enabled x86_64 && objformat="win64" || objformat="win32"
5385         dlltool="${cross_prefix}dlltool"
5386         ranlib=:
5387         enable dos_paths
5388         check_ldflags -Wl,--nxcompat,--dynamicbase
5389         # Lets work around some stupidity in binutils.
5390         # ld will strip relocations from executables even though we need them
5391         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
5392         # however ld then forgets what the entry point should be (oops) so we
5393         # have to manually (re)set it.
5394         if enabled x86_32; then
5395             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
5396         elif enabled x86_64; then
5397             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
5398             check_ldflags -Wl,--high-entropy-va # binutils 2.25
5399             # Set image base >4GB for extra entropy with HEASLR
5400             add_ldexeflags -Wl,--image-base,0x140000000
5401             append SHFLAGS -Wl,--image-base,0x180000000
5402         fi
5403         ;;
5404     win32|win64)
5405         disable symver
5406         if enabled shared; then
5407             # Link to the import library instead of the normal static library
5408             # for shared libs.
5409             LD_LIB='%.lib'
5410             # Cannot build both shared and static libs with MSVC or icl.
5411             disable static
5412         fi
5413         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
5414         shlibdir_default="$bindir_default"
5415         SLIBPREF=""
5416         SLIBSUF=".dll"
5417         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5418         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5419         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5420         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5421         SLIB_INSTALL_LINKS=
5422         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5423         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5424         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5425         enabled x86_64 && objformat="win64" || objformat="win32"
5426         ranlib=:
5427         enable dos_paths
5428         ;;
5429     cygwin*)
5430         target_os=cygwin
5431         shlibdir_default="$bindir_default"
5432         SLIBPREF="cyg"
5433         SLIBSUF=".dll"
5434         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5435         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5436         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5437         SLIB_INSTALL_LINKS=
5438         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5439         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5440         enabled x86_64 && objformat="win64" || objformat="win32"
5441         enable dos_paths
5442         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5443         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5444         ;;
5445     *-dos|freedos|opendos)
5446         network_extralibs="-lsocket"
5447         objformat="coff"
5448         enable dos_paths
5449         ;;
5450     linux)
5451         enable section_data_rel_ro
5452         enabled_any arm aarch64 && enable_weak linux_perf
5453         ;;
5454     irix*)
5455         target_os=irix
5456         ranlib="echo ignoring ranlib"
5457         ;;
5458     os/2*)
5459         strip="lxlite -CS"
5460         striptype=""
5461         objformat="aout"
5462         add_cppflags -D_GNU_SOURCE
5463         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5464         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5465         LIBSUF="_s.a"
5466         SLIBPREF=""
5467         SLIBSUF=".dll"
5468         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5469         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5470         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5471             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5472             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5473             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5474             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5475         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5476             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5477         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5478         SLIB_INSTALL_LINKS=
5479         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5480         enable dos_paths
5481         enable_weak os2threads
5482         ;;
5483     gnu/kfreebsd)
5484         add_cppflags -D_BSD_SOURCE
5485         ;;
5486     gnu)
5487         ;;
5488     qnx)
5489         add_cppflags -D_QNX_SOURCE
5490         network_extralibs="-lsocket"
5491         ;;
5492     symbian)
5493         SLIBSUF=".dll"
5494         enable dos_paths
5495         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5496         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5497         add_ldflags -Wl,--target1-abs,--no-undefined \
5498                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5499                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5500         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5501                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5502                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5503         ;;
5504     minix)
5505         ;;
5506     none)
5507         ;;
5508     *)
5509         die "Unknown OS '$target_os'."
5510         ;;
5511 esac
5512
5513 # test if creating links works
5514 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5515 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5516 mkdir "$link_dest"
5517 $ln_s "$link_dest" "$link_name"
5518 touch "$link_dest/test_file"
5519 if [ "$source_path" != "." ] && [ "$source_path" != "src" ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5520     # create link to source path
5521     [ -e src ] && rm src
5522     $ln_s "$source_path" src
5523     source_link=src
5524 else
5525     # creating directory links doesn't work
5526     # fall back to using the full source path
5527     source_link="$source_path"
5528 fi
5529 # cleanup
5530 rm -r "$link_dest"
5531 rm -r "$link_name"
5532
5533 # determine libc flavour
5534
5535 probe_libc(){
5536     pfx=$1
5537     pfx_no_=${pfx%_}
5538     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5539     if test_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5540         eval ${pfx}libc_type=uclibc
5541         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5542     elif test_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5543         eval ${pfx}libc_type=glibc
5544         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5545     # MinGW headers can be installed on Cygwin, so check for newlib first.
5546     elif test_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5547         eval ${pfx}libc_type=newlib
5548         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5549     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5550     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5551         eval ${pfx}libc_type=mingw64
5552         if test_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5553             add_compat msvcrt/snprintf.o
5554             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5555         fi
5556         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5557         eval test \$${pfx_no_}cc_type = "gcc" &&
5558             add_${pfx}cppflags -D__printf__=__gnu_printf__
5559         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5560             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5561         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5562     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5563          test_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5564         eval ${pfx}libc_type=mingw32
5565         test_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5566             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5567             die "ERROR: MinGW32 runtime version must be >= 3.15."
5568         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5569         test_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5570             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5571         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5572             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5573         eval test \$${pfx_no_}cc_type = "gcc" &&
5574             add_${pfx}cppflags -D__printf__=__gnu_printf__
5575         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5576     elif test_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5577         eval ${pfx}libc_type=msvcrt
5578         if test_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5579             if [ "$pfx" = host_ ]; then
5580                 add_host_cppflags -Dsnprintf=_snprintf
5581             else
5582                 add_compat strtod.o strtod=avpriv_strtod
5583                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5584                                              _snprintf=avpriv_snprintf  \
5585                                              vsnprintf=avpriv_vsnprintf
5586             fi
5587         fi
5588         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5589         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5590         # 0x601 by default unless something else is set by the user.
5591         # This can easily lead to us detecting functions only present
5592         # in such new versions and producing binaries requiring windows 7.0.
5593         # Therefore explicitly set the default to Vista unless the user has
5594         # set something else on the command line.
5595         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5596         # family. For these cases, configure is free to use any functions
5597         # found in the SDK headers by default. (Alternatively, we could force
5598         # _WIN32_WINNT to 0x0602 in that case.)
5599         test_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5600             { test_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0600; }
5601 #ifdef WINAPI_FAMILY
5602 #include <winapifamily.h>
5603 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5604 #error not desktop
5605 #endif
5606 #endif
5607 EOF
5608         if [ "$pfx" = "" ]; then
5609             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5610             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5611         fi
5612     elif test_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5613         eval ${pfx}libc_type=klibc
5614     elif test_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5615         eval ${pfx}libc_type=bionic
5616     elif test_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5617         eval ${pfx}libc_type=solaris
5618         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5619     elif test_${pfx}cpp_condition sys/version.h "defined __DJGPP__"; then
5620         eval ${pfx}libc_type=djgpp
5621         add_cppflags -U__STRICT_ANSI__
5622         add_cflags "-include $source_path/compat/djgpp/math.h"
5623         add_compat djgpp/math.o
5624     fi
5625     test_${pfx}cc <<EOF
5626 #include <time.h>
5627 void *v = localtime_r;
5628 EOF
5629 test "$?" != 0 && test_${pfx}cc -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 <<EOF && add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5630 #include <time.h>
5631 void *v = localtime_r;
5632 EOF
5633
5634     eval test -n "\${${pfx}libc_type}" && enable ${pfx}libc_${libc_type}
5635 }
5636
5637 probe_libc
5638 probe_libc host_
5639
5640 # hacks for compiler/libc/os combinations
5641
5642 case $libc_type in
5643     bionic)
5644         add_compat strtod.o strtod=avpriv_strtod
5645         ;;
5646 esac
5647
5648 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5649     add_cppflags '-I\$(SRC_PATH)/compat/float'
5650
5651 test_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5652
5653 set_default libdir
5654 : ${shlibdir_default:="$libdir"}
5655 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5656
5657 set_default $PATHS_LIST
5658 set_default nm
5659
5660 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5661
5662 enable_weak_pic() {
5663     disabled pic && return
5664     enable pic
5665     add_cppflags -DPIC
5666     case "$target_os" in
5667     mingw*|cygwin*|win*)
5668         ;;
5669     *)
5670         add_cflags -fPIC
5671         add_asflags -fPIC
5672         ;;
5673     esac
5674 }
5675
5676 enabled pic && enable_weak_pic
5677
5678 test_cc <<EOF || die "Symbol mangling check failed."
5679 int ff_extern;
5680 EOF
5681 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5682 extern_prefix=${sym%%ff_extern*}
5683
5684 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
5685
5686 for restrict_keyword in restrict __restrict__ __restrict ""; do
5687     test_code cc "" "char * $restrict_keyword p" && break
5688 done
5689
5690 check_cc pragma_deprecated "" '_Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"")'
5691
5692 # The global variable ensures the bits appear unchanged in the object file.
5693 test_cc <<EOF || die "endian test failed"
5694 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5695 EOF
5696 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5697
5698 check_cc const_nan math.h "struct { double d; } static const bar[] = { { NAN } }"
5699
5700 if ! enabled ppc64 || enabled bigendian; then
5701     disable vsx
5702 fi
5703
5704 check_gas() {
5705     log "check_gas using '$as' as AS"
5706     # :vararg is used on aarch64, arm and ppc altivec
5707     check_as vararg "
5708 .macro m n, y:vararg=0
5709 \n: .int \y
5710 .endm
5711 m x" || return 1
5712     # .altmacro is only used in arm asm
5713     ! enabled arm || check_as gnu_as ".altmacro"
5714 }
5715
5716 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5717     nogas=:
5718     enabled_any arm aarch64 && nogas=die
5719     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5720     as_noop=-v
5721
5722     case $as_type in
5723         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5724         gcc)  gaspp_as_type=gas ;;
5725         *)    gaspp_as_type=$as_type ;;
5726     esac
5727
5728     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5729
5730     test "${as#*gas-preprocessor.pl}" != "$as" ||
5731     test_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5732         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5733
5734     if ! check_gas ; then
5735         as=${gas:=$as}
5736         check_gas || \
5737             $nogas "GNU assembler not found, install/update gas-preprocessor"
5738     fi
5739
5740     check_as as_func ".func test
5741                       .endfunc"
5742 fi
5743
5744 check_inline_asm inline_asm_labels '"1:\n"'
5745
5746 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5747
5748 if enabled aarch64; then
5749     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5750     # internal assembler in clang 3.3 does not support this instruction
5751     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5752     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5753
5754     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5755
5756 elif enabled alpha; then
5757
5758     check_cflags -mieee
5759
5760 elif enabled arm; then
5761
5762     enabled msvc && check_cpp_condition thumb stddef.h "defined _M_ARMT"
5763     test_cpp_condition stddef.h "defined __thumb__" && test_cc <<EOF && enable_weak thumb
5764 float func(float a, float b){ return a+b; }
5765 EOF
5766     enabled thumb && check_cflags -mthumb || check_cflags -marm
5767
5768     if check_cpp_condition vfp_args stddef.h "defined __ARM_PCS_VFP"; then
5769         :
5770     elif check_cpp_condition vfp_args stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5771         :
5772     elif ! test_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5773         case "${cross_prefix:-$cc}" in
5774             *hardfloat*) enable vfp_args; fpabi=vfp ;;
5775             *) check_ld "cc" vfp_args <<EOF && fpabi=vfp || fpabi=soft ;;
5776 __asm__ (".eabi_attribute 28, 1");
5777 int main(void) { return 0; }
5778 EOF
5779         esac
5780         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5781     fi
5782
5783     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5784     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5785     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5786     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5787     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5788     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5789     enabled setend  && check_insn setend  'setend be'
5790
5791     [ $target_os = linux ] || [ $target_os = android ] ||
5792         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5793             $ARCH_EXT_LIST_ARM
5794
5795     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5796
5797     check_as as_arch_directive ".arch armv7-a"
5798     check_as as_dn_directive   "ra .dn d0.i16"
5799     check_as as_fpu_directive  ".fpu neon"
5800
5801     # llvm's integrated assembler supports .object_arch from llvm 3.5
5802     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5803         check_as as_object_arch ".object_arch armv4"
5804
5805     # MS armasm fails to assemble our PIC constructs
5806     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5807
5808 elif enabled mips; then
5809
5810     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5811     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5812     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5813
5814     # Enable minimum ISA based on selected options
5815     if enabled mips64; then
5816         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5817         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5818         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5819     else
5820         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5821         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5822         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5823         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5824     fi
5825
5826     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5827     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5828     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_headers msa.h || disable msa
5829     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5830     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5831     enabled msa && enabled msa2 && check_inline_asm_flags msa2 '"nxbits.any.b $w0, $w0"' '-mmsa2' && check_headers msa2.h || disable msa2
5832
5833     if enabled bigendian && enabled msa; then
5834         disable msa
5835     fi
5836
5837 elif enabled parisc; then
5838
5839     if enabled gcc; then
5840         case $($cc -dumpversion) in
5841             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5842         esac
5843     fi
5844
5845 elif enabled ppc; then
5846
5847     enable local_aligned
5848
5849     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5850     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5851     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5852     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5853
5854     if enabled altivec; then
5855         check_cflags -maltivec -mabi=altivec
5856
5857         # check if our compiler supports Motorola AltiVec C API
5858         check_cc altivec altivec.h "vector signed int v1 = (vector signed int) { 0 };
5859                                     vector signed int v2 = (vector signed int) { 1 };
5860                                     v1 = vec_add(v1, v2);"
5861
5862         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5863     fi
5864
5865     if enabled vsx; then
5866         check_cflags -mvsx &&
5867         check_cc vsx altivec.h "int v[4] = { 0 };
5868                                 vector signed int v1 = vec_vsx_ld(0, v);"
5869     fi
5870
5871     if enabled power8; then
5872         check_cpp_condition power8 "altivec.h" "defined(_ARCH_PWR8)"
5873     fi
5874
5875 elif enabled x86; then
5876
5877     check_builtin rdtsc    intrin.h   "__rdtsc()"
5878     check_builtin mm_empty mmintrin.h "_mm_empty()"
5879
5880     enable local_aligned
5881
5882     # check whether EBP is available on x86
5883     # As 'i' is stored on the stack, this program will crash
5884     # if the base pointer is used to access it because the
5885     # base pointer is cleared in the inline assembly code.
5886     check_exec_crash <<EOF && enable ebp_available
5887 volatile int i=0;
5888 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5889 return i;
5890 EOF
5891
5892     # check whether EBX is available on x86
5893     check_inline_asm ebx_available '""::"b"(0)' &&
5894         check_inline_asm ebx_available '"":::"%ebx"'
5895
5896     # check whether xmm clobbers are supported
5897     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5898
5899     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5900         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5901
5902     # check whether binutils is new enough to compile SSSE3/MMXEXT
5903     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5904     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5905
5906     probe_x86asm(){
5907         x86asmexe_probe=$1
5908         if test_cmd $x86asmexe_probe -v; then
5909             x86asmexe=$x86asmexe_probe
5910             x86asm_type=nasm
5911             x86asm_debug="-g -F dwarf"
5912             X86ASMDEP=
5913             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5914         elif test_cmd $x86asmexe_probe --version; then
5915             x86asmexe=$x86asmexe_probe
5916             x86asm_type=yasm
5917             x86asm_debug="-g dwarf2"
5918             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
5919             X86ASM_DEPFLAGS=
5920         fi
5921         check_x86asm x86asm "movbe ecx, [5]"
5922     }
5923
5924     if ! disabled_any asm mmx x86asm; then
5925         disable x86asm
5926         for program in $x86asmexe nasm yasm; do
5927             probe_x86asm $program && break
5928         done
5929         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
5930         X86ASMFLAGS="-f $objformat"
5931         enabled pic               && append X86ASMFLAGS "-DPIC"
5932         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
5933         case "$objformat" in
5934             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
5935         esac
5936
5937         enabled avx512 && check_x86asm avx512_external "vmovdqa32 [eax]{k1}{z}, zmm0"
5938         enabled avx2   && check_x86asm avx2_external   "vextracti128 xmm0, ymm0, 0"
5939         enabled xop    && check_x86asm xop_external    "vpmacsdd xmm0, xmm1, xmm2, xmm3"
5940         enabled fma4   && check_x86asm fma4_external   "vfmaddps ymm0, ymm1, ymm2, ymm3"
5941         check_x86asm cpunop          "CPU amdnop"
5942     fi
5943
5944     case "$cpu" in
5945         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5946             disable fast_clz
5947         ;;
5948     esac
5949
5950 fi
5951
5952 check_cc intrinsics_neon arm_neon.h "int16x8_t test = vdupq_n_s16(0)"
5953
5954 check_ldflags -Wl,--as-needed
5955 check_ldflags -Wl,-z,noexecstack
5956
5957 if ! disabled network; then
5958     check_func getaddrinfo $network_extralibs
5959     check_func inet_aton $network_extralibs
5960
5961     check_type netdb.h "struct addrinfo"
5962     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5963     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5964     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5965     check_type poll.h "struct pollfd"
5966     check_type netinet/sctp.h "struct sctp_event_subscribe"
5967     check_struct "sys/socket.h" "struct msghdr" msg_flags
5968     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5969     check_type netinet/in.h "struct sockaddr_in6"
5970     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5971     check_type "sys/types.h sys/socket.h" socklen_t
5972
5973     # Prefer arpa/inet.h over winsock2
5974     if check_headers arpa/inet.h ; then
5975         check_func closesocket
5976     elif check_headers winsock2.h ; then
5977         check_func_headers winsock2.h closesocket -lws2 &&
5978             network_extralibs="-lws2" ||
5979         { check_func_headers winsock2.h closesocket -lws2_32 &&
5980             network_extralibs="-lws2_32"; } || disable winsock2_h network
5981         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5982
5983         check_type ws2tcpip.h socklen_t
5984         check_type ws2tcpip.h "struct addrinfo"
5985         check_type ws2tcpip.h "struct group_source_req"
5986         check_type ws2tcpip.h "struct ip_mreq_source"
5987         check_type ws2tcpip.h "struct ipv6_mreq"
5988         check_type winsock2.h "struct pollfd"
5989         check_struct winsock2.h "struct sockaddr" sa_len
5990         check_type ws2tcpip.h "struct sockaddr_in6"
5991         check_type ws2tcpip.h "struct sockaddr_storage"
5992     else
5993         disable network
5994     fi
5995 fi
5996
5997 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5998 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5999 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
6000 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
6001 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
6002 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
6003 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
6004
6005 case "$custom_allocator" in
6006     jemalloc)
6007         # jemalloc by default does not use a prefix
6008         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
6009     ;;
6010     tcmalloc)
6011         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
6012         malloc_prefix=tc_
6013     ;;
6014 esac
6015
6016 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
6017 check_func  ${malloc_prefix}memalign            && enable memalign
6018 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
6019
6020 check_func  access
6021 check_func_headers stdlib.h arc4random
6022 check_lib   clock_gettime time.h clock_gettime || check_lib clock_gettime time.h clock_gettime -lrt
6023 check_func  fcntl
6024 check_func  fork
6025 check_func  gethrtime
6026 check_func  getopt
6027 check_func  getrusage
6028 check_func  gettimeofday
6029 check_func  isatty
6030 check_func  mkstemp
6031 check_func  mmap
6032 check_func  mprotect
6033 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
6034 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
6035 check_func  sched_getaffinity
6036 check_func  setrlimit
6037 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
6038 check_func  strerror_r
6039 check_func  sysconf
6040 check_func  sysctl
6041 check_func  usleep
6042
6043 check_func_headers conio.h kbhit
6044 check_func_headers io.h setmode
6045 check_func_headers lzo/lzo1x.h lzo1x_999_compress
6046 check_func_headers mach/mach_time.h mach_absolute_time
6047 check_func_headers stdlib.h getenv
6048 check_func_headers sys/stat.h lstat
6049
6050 check_func_headers windows.h GetModuleHandle
6051 check_func_headers windows.h GetProcessAffinityMask
6052 check_func_headers windows.h GetProcessTimes
6053 check_func_headers windows.h GetStdHandle
6054 check_func_headers windows.h GetSystemTimeAsFileTime
6055 check_func_headers windows.h LoadLibrary
6056 check_func_headers windows.h MapViewOfFile
6057 check_func_headers windows.h PeekNamedPipe
6058 check_func_headers windows.h SetConsoleTextAttribute
6059 check_func_headers windows.h SetConsoleCtrlHandler
6060 check_func_headers windows.h SetDllDirectory
6061 check_func_headers windows.h Sleep
6062 check_func_headers windows.h VirtualAlloc
6063 check_func_headers glob.h glob
6064 enabled xlib &&
6065     check_lib xlib "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
6066
6067 check_headers direct.h
6068 check_headers dirent.h
6069 check_headers dxgidebug.h
6070 check_headers dxva.h
6071 check_headers dxva2api.h -D_WIN32_WINNT=0x0600
6072 check_headers io.h
6073 check_headers linux/perf_event.h
6074 check_headers libcrystalhd/libcrystalhd_if.h
6075 check_headers malloc.h
6076 check_headers net/udplite.h
6077 check_headers poll.h
6078 check_headers sys/param.h
6079 check_headers sys/resource.h
6080 check_headers sys/select.h
6081 check_headers sys/time.h
6082 check_headers sys/un.h
6083 check_headers termios.h
6084 check_headers unistd.h
6085 check_headers valgrind/valgrind.h
6086 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
6087 check_headers windows.h
6088 check_headers X11/extensions/XvMClib.h
6089 check_headers asm/types.h
6090
6091 # it seems there are versions of clang in some distros that try to use the
6092 # gcc headers, which explodes for stdatomic
6093 # so we also check that atomics actually work here
6094 check_builtin stdatomic stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0); foo += bar"
6095
6096 check_lib advapi32 "windows.h"            RegCloseKey          -ladvapi32
6097 check_lib bcrypt   "windows.h bcrypt.h"   BCryptGenRandom      -lbcrypt &&
6098     check_cpp_condition bcrypt bcrypt.h "defined BCRYPT_RNG_ALGORITHM"
6099 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
6100 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
6101 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
6102
6103 check_lib android android/native_window.h ANativeWindow_acquire -landroid
6104 check_lib mediandk "stdint.h media/NdkImage.h" AImage_delete -lmediandk
6105 check_lib camera2ndk "stdbool.h stdint.h camera/NdkCameraManager.h" ACameraManager_create -lcamera2ndk
6106
6107 enabled appkit       && check_apple_framework AppKit
6108 enabled audiotoolbox && check_apple_framework AudioToolbox
6109 enabled avfoundation && check_apple_framework AVFoundation
6110 enabled coreimage    && check_apple_framework CoreImage
6111 enabled videotoolbox && check_apple_framework VideoToolbox
6112
6113 check_apple_framework CoreFoundation
6114 check_apple_framework CoreMedia
6115 check_apple_framework CoreVideo
6116
6117 enabled avfoundation && {
6118     disable coregraphics applicationservices
6119     check_lib coregraphics        CoreGraphics/CoreGraphics.h               CGGetActiveDisplayList "-framework CoreGraphics" ||
6120     check_lib applicationservices ApplicationServices/ApplicationServices.h CGGetActiveDisplayList "-framework ApplicationServices"; }
6121
6122 enabled videotoolbox && {
6123     check_lib coreservices CoreServices/CoreServices.h UTGetOSTypeFromString "-framework CoreServices"
6124     check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_HEVC "-framework CoreMedia"
6125     check_func_headers CoreVideo/CVPixelBuffer.h kCVPixelFormatType_420YpCbCr10BiPlanarVideoRange "-framework CoreVideo"
6126     check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferTransferFunction_SMPTE_ST_2084_PQ "-framework CoreVideo"
6127     check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferTransferFunction_ITU_R_2100_HLG "-framework CoreVideo"
6128     check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferTransferFunction_Linear "-framework CoreVideo"
6129 }
6130
6131 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
6132
6133 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
6134 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
6135 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
6136 check_type "windows.h d3d11.h" "ID3D11VideoContext"
6137 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
6138
6139 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
6140 check_type "vdpau/vdpau.h" "VdpPictureInfoVP9"
6141
6142 if [ -z "$nvccflags" ]; then
6143     nvccflags=$nvccflags_default
6144 fi
6145
6146 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6147     nvccflags="$nvccflags -m64"
6148 else
6149     nvccflags="$nvccflags -m32"
6150 fi
6151
6152 if enabled cuda_nvcc; then
6153     nvccflags="$nvccflags -ptx"
6154 else
6155     nvccflags="$nvccflags -S -nocudalib -nocudainc --cuda-device-only -include ${source_link}/compat/cuda/cuda_runtime.h"
6156     check_nvcc cuda_llvm
6157 fi
6158
6159 if ! disabled ffnvcodec; then
6160     ffnv_hdr_list="ffnvcodec/nvEncodeAPI.h ffnvcodec/dynlink_cuda.h ffnvcodec/dynlink_cuviddec.h ffnvcodec/dynlink_nvcuvid.h"
6161     check_pkg_config ffnvcodec "ffnvcodec >= 9.1.23.1" "$ffnv_hdr_list" "" || \
6162       check_pkg_config ffnvcodec "ffnvcodec >= 9.0.18.3 ffnvcodec < 9.1" "$ffnv_hdr_list" "" || \
6163       check_pkg_config ffnvcodec "ffnvcodec >= 8.2.15.10 ffnvcodec < 8.3" "$ffnv_hdr_list" "" || \
6164       check_pkg_config ffnvcodec "ffnvcodec >= 8.1.24.11 ffnvcodec < 8.2" "$ffnv_hdr_list" ""
6165 fi
6166
6167 check_cpp_condition winrt windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)"
6168
6169 if ! disabled w32threads && ! enabled pthreads; then
6170     check_func_headers "windows.h process.h" _beginthreadex &&
6171         check_type "windows.h" CONDITION_VARIABLE &&
6172         check_type "windows.h" INIT_ONCE &&
6173         enable w32threads || disable w32threads
6174     if ! enabled w32threads && enabled winrt; then
6175         check_func_headers "windows.h" CreateThread &&
6176             enable w32threads || disable w32threads
6177     fi
6178 fi
6179
6180 # check for some common methods of building with pthread support
6181 # do this before the optional library checks as some of them require pthreads
6182 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
6183     if check_lib pthreads pthread.h pthread_join   -pthread &&
6184        check_lib pthreads pthread.h pthread_create -pthread; then
6185         add_cflags -pthread
6186     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
6187          check_lib pthreads pthread.h pthread_create -pthreads; then
6188         add_cflags -pthreads
6189     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
6190          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
6191         add_cflags -ldl -pthread
6192     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
6193          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
6194         :
6195     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
6196          check_lib pthreads pthread.h pthread_create -lpthread; then
6197         :
6198     elif check_func pthread_join && check_func pthread_create; then
6199         enable pthreads
6200     fi
6201     check_cc pthreads "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER"
6202
6203     if enabled pthreads; then
6204         check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
6205         check_func pthread_cancel $pthreads_extralibs
6206     fi
6207 fi
6208
6209 enabled  zlib && { check_pkg_config zlib zlib "zlib.h" zlibVersion ||
6210                    check_lib zlib   zlib.h      zlibVersion    -lz; }
6211 enabled bzlib && check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
6212 enabled  lzma && check_lib lzma   lzma.h lzma_version_number -llzma
6213
6214 # On some systems dynamic loading requires no extra linker flags
6215 check_lib libdl dlfcn.h "dlopen dlsym" || check_lib libdl dlfcn.h "dlopen dlsym" -ldl
6216
6217 check_lib libm math.h sin -lm
6218
6219 atan2f_args=2
6220 copysign_args=2
6221 hypot_args=2
6222 ldexpf_args=2
6223 powf_args=2
6224
6225 for func in $MATH_FUNCS; do
6226     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
6227 done
6228
6229 for func in $COMPLEX_FUNCS; do
6230     eval check_complexfunc $func \${${func}_args:-1}
6231 done
6232
6233 # these are off by default, so fail if requested and not available
6234 enabled cuda_nvcc         && { check_nvcc cuda_nvcc || die "ERROR: failed checking for nvcc."; }
6235 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
6236 enabled decklink          && { require_headers DeckLinkAPI.h &&
6237                                { test_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a090500" || die "ERROR: Decklink API version must be >= 10.9.5."; } }
6238 enabled frei0r            && require_headers "frei0r.h dlfcn.h"
6239 enabled gmp               && require gmp gmp.h mpz_export -lgmp
6240 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
6241 enabled jni               && { [ $target_os = "android" ] && check_headers jni.h && enabled pthreads || die "ERROR: jni not found"; }
6242 enabled ladspa            && require_headers "ladspa.h dlfcn.h"
6243 enabled libaom            && require_pkg_config libaom "aom >= 1.0.0" aom/aom_codec.h aom_codec_version
6244 enabled libaribb24        && { check_pkg_config libaribb24 "aribb24 > 1.0.3" "aribb24/aribb24.h" arib_instance_new ||
6245                                { enabled gpl && require_pkg_config libaribb24 aribb24 "aribb24/aribb24.h" arib_instance_new; } ||
6246                                die "ERROR: libaribb24 requires version higher than 1.0.3 or --enable-gpl."; }
6247 enabled lv2               && require_pkg_config lv2 lilv-0 "lilv/lilv.h" lilv_world_new
6248 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
6249 enabled libass            && require_pkg_config libass libass ass/ass.h ass_library_init
6250 enabled libbluray         && require_pkg_config libbluray libbluray libbluray/bluray.h bd_open
6251 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
6252 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
6253                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
6254                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
6255 enabled libcaca           && require_pkg_config libcaca caca caca.h caca_create_canvas
6256 enabled libcodec2         && require libcodec2 codec2/codec2.h codec2_create -lcodec2
6257 enabled libdav1d          && require_pkg_config libdav1d "dav1d >= 0.4.0" "dav1d/dav1d.h" dav1d_version
6258 enabled libdavs2          && require_pkg_config libdavs2 "davs2 >= 1.6.0" davs2.h davs2_decoder_open
6259 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
6260 enabled libdrm            && require_pkg_config libdrm libdrm xf86drm.h drmGetVersion
6261 enabled libfdk_aac        && { check_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
6262                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
6263                                  warn "using libfdk without pkg-config"; } }
6264 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"
6265 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
6266 enabled fontconfig        && enable libfontconfig
6267 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
6268 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
6269 enabled libfribidi        && require_pkg_config libfribidi fribidi fribidi.h fribidi_version_info
6270 enabled libglslang        && require_cpp libglslang glslang/SPIRV/GlslangToSpv.h "glslang::TIntermediate*" -lglslang -lOSDependent -lHLSL -lOGLCompiler -lSPVRemapper -lSPIRV -lSPIRV-Tools -lSPIRV-Tools-opt -lpthread -lstdc++
6271 enabled libgme            && { check_pkg_config libgme libgme gme/gme.h gme_new_emu ||
6272                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }
6273 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
6274                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
6275                                done || die "ERROR: libgsm not found"; }
6276 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc $pthreads_extralibs
6277 enabled libklvanc         && require libklvanc libklvanc/vanc.h klvanc_context_create -lklvanc
6278 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
6279 enabled liblensfun        && require_pkg_config liblensfun lensfun lensfun.h lf_db_new
6280 # While it may appear that require is being used as a pkg-config
6281 # fallback for libmfx, it is actually being used to detect a different
6282 # installation route altogether.  If libmfx is installed via the Intel
6283 # Media SDK or Intel Media Server Studio, these don't come with
6284 # pkg-config support.  Instead, users should make sure that the build
6285 # can find the libraries and headers through other means.
6286 enabled libmfx            && { check_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit ||
6287                                { require libmfx "mfx/mfxvideo.h" MFXInit "-llibmfx $advapi32_extralibs" && warn "using libmfx without pkg-config"; } }
6288 if enabled libmfx; then
6289    check_cc MFX_CODEC_VP9 "mfx/mfxvp9.h mfx/mfxstructures.h" "MFX_CODEC_VP9"
6290 fi
6291
6292 enabled libmodplug        && require_pkg_config libmodplug libmodplug libmodplug/modplug.h ModPlug_Load
6293 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame $libm_extralibs
6294 enabled libmysofa         && { check_pkg_config libmysofa libmysofa mysofa.h mysofa_neighborhood_init_withstepdefine ||
6295                                require libmysofa mysofa.h mysofa_neighborhood_init_withstepdefine -lmysofa $zlib_extralibs; }
6296 enabled libnpp            && { check_lib libnpp npp.h nppGetLibVersion -lnppig -lnppicc -lnppc -lnppidei ||
6297                                check_lib libnpp npp.h nppGetLibVersion -lnppi -lnppc -lnppidei ||
6298                                die "ERROR: libnpp not found"; }
6299 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
6300 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
6301 enabled libopencv         && { check_headers opencv2/core/core_c.h &&
6302                                { check_pkg_config libopencv opencv opencv2/core/core_c.h cvCreateImageHeader ||
6303                                  require libopencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
6304                                require_pkg_config libopencv opencv opencv/cxcore.h cvCreateImageHeader; }
6305 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
6306 enabled libopenjpeg       && { check_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version ||
6307                                { require_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } }
6308 enabled libopenmpt        && require_pkg_config libopenmpt "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create -lstdc++ && append libopenmpt_extralibs "-lstdc++"
6309 enabled libopus           && {
6310     enabled libopus_decoder && {
6311         require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
6312     }
6313     enabled libopus_encoder && {
6314         require_pkg_config libopus opus opus_multistream.h opus_multistream_surround_encoder_create
6315     }
6316 }
6317 enabled libpulse          && require_pkg_config libpulse libpulse pulse/pulseaudio.h pa_context_new
6318 enabled librav1e          && require_pkg_config librav1e "rav1e >= 0.1.0" rav1e.h rav1e_context_new
6319 enabled librsvg           && require_pkg_config librsvg librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
6320 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
6321 enabled librubberband     && require_pkg_config librubberband "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new -lstdc++ && append librubberband_extralibs "-lstdc++"
6322 enabled libshine          && require_pkg_config libshine shine shine/layer3.h shine_encode_buffer
6323 enabled libsmbclient      && { check_pkg_config libsmbclient smbclient libsmbclient.h smbc_init ||
6324                                require libsmbclient libsmbclient.h smbc_init -lsmbclient; }
6325 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy -lstdc++
6326 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
6327 enabled libssh            && require_pkg_config libssh libssh libssh/sftp.h sftp_init
6328 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init
6329 enabled libsrt            && require_pkg_config libsrt "srt >= 1.3.0" srt/srt.h srt_socket
6330 enabled libtensorflow     && require libtensorflow tensorflow/c/c_api.h TF_Version -ltensorflow
6331 enabled libtesseract      && require_pkg_config libtesseract tesseract tesseract/capi.h TessBaseAPICreate
6332 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
6333 enabled libtls            && require_pkg_config libtls libtls tls.h tls_configure
6334 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
6335                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
6336                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
6337 enabled libv4l2           && require_pkg_config libv4l2 libv4l2 libv4l2.h v4l2_ioctl
6338 enabled libvidstab        && require_pkg_config libvidstab "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
6339 enabled libvmaf           && require_pkg_config libvmaf "libvmaf >= 1.3.9" libvmaf.h compute_vmaf
6340 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
6341 enabled libvorbis         && require_pkg_config libvorbis vorbis vorbis/codec.h vorbis_info_init &&
6342                              require_pkg_config libvorbisenc vorbisenc vorbis/vorbisenc.h vorbis_encode_init
6343
6344 enabled libvpx            && {
6345     enabled libvpx_vp8_decoder && {
6346         check_pkg_config libvpx_vp8_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
6347             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"
6348     }
6349     enabled libvpx_vp8_encoder && {
6350         check_pkg_config libvpx_vp8_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
6351             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"
6352     }
6353     enabled libvpx_vp9_decoder && {
6354         check_pkg_config libvpx_vp9_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
6355             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"
6356     }
6357     enabled libvpx_vp9_encoder && {
6358         check_pkg_config libvpx_vp9_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
6359             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"
6360     }
6361     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
6362         die "libvpx enabled but no supported decoders found"
6363     fi
6364 }
6365
6366 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
6367 enabled libwebp           && {
6368     enabled libwebp_encoder      && require_pkg_config libwebp "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
6369     enabled libwebp_anim_encoder && check_pkg_config libwebp_anim_encoder "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit; }
6370 enabled libx264           && { check_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode ||
6371                                { require libx264 "stdint.h x264.h" x264_encoder_encode "-lx264 $pthreads_extralibs $libm_extralibs" &&
6372                                  warn "using libx264 without pkg-config"; } } &&
6373                              require_cpp_condition libx264 x264.h "X264_BUILD >= 118" &&
6374                              check_cpp_condition libx262 x264.h "X264_MPEG2"
6375 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
6376                              require_cpp_condition libx265 x265.h "X265_BUILD >= 70"
6377 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode "-lxavs $pthreads_extralibs $libm_extralibs"
6378 enabled libxavs2          && require_pkg_config libxavs2 "xavs2 >= 1.3.0" "stdint.h xavs2.h" xavs2_api_get
6379 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
6380 enabled libzimg           && require_pkg_config libzimg "zimg >= 2.7.0" zimg.h zimg_get_api_version
6381 enabled libzmq            && require_pkg_config libzmq "libzmq >= 4.2.1" zmq.h zmq_ctx_new
6382 enabled libzvbi           && require_pkg_config libzvbi zvbi-0.2 libzvbi.h vbi_decoder_new &&
6383                              { test_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
6384                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
6385 enabled libxml2           && require_pkg_config libxml2 libxml-2.0 libxml2/libxml/xmlversion.h xmlCheckVersion
6386 enabled mbedtls           && { check_pkg_config mbedtls mbedtls mbedtls/x509_crt.h mbedtls_x509_crt_init ||
6387                                check_pkg_config mbedtls mbedtls mbedtls/ssl.h mbedtls_ssl_init ||
6388                                check_lib mbedtls mbedtls/ssl.h mbedtls_ssl_init -lmbedtls -lmbedx509 -lmbedcrypto ||
6389                                die "ERROR: mbedTLS not found"; }
6390 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
6391 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
6392                                { ! enabled cross_compile &&
6393                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
6394                                  add_ldflags -L/opt/vc/lib/ &&
6395                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
6396                                die "ERROR: mmal not found" &&
6397                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
6398 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
6399                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
6400                                die "ERROR: openal not found"; } &&
6401                              { test_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
6402                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
6403 enabled opencl            && { check_pkg_config opencl OpenCL CL/cl.h clEnqueueNDRangeKernel ||
6404                                check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
6405                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
6406                                die "ERROR: opencl not found"; } &&
6407                              { test_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
6408                                test_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
6409                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
6410 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
6411                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
6412                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
6413                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
6414                                die "ERROR: opengl not found."
6415                              }
6416 enabled omx_rpi           && { test_code cc OMX_Core.h OMX_IndexConfigBrcmVideoRequestIFrame ||
6417                                { ! enabled cross_compile &&
6418                                  add_cflags -isystem/opt/vc/include/IL &&
6419                                  test_code cc OMX_Core.h OMX_IndexConfigBrcmVideoRequestIFrame; } ||
6420                                die "ERROR: OpenMAX IL headers from raspberrypi/firmware not found"; } &&
6421                              enable omx
6422 enabled omx               && require_headers OMX_Core.h
6423 enabled openssl           && { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
6424                                check_pkg_config openssl openssl openssl/ssl.h SSL_library_init ||
6425                                check_lib openssl openssl/ssl.h OPENSSL_init_ssl -lssl -lcrypto ||
6426                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
6427                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
6428                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
6429                                die "ERROR: openssl not found"; }
6430 enabled pocketsphinx      && require_pkg_config pocketsphinx pocketsphinx pocketsphinx/pocketsphinx.h ps_init
6431 enabled rkmpp             && { require_pkg_config rkmpp rockchip_mpp  rockchip/rk_mpi.h mpp_create &&
6432                                require_pkg_config rockchip_mpp "rockchip_mpp >= 1.3.7" rockchip/rk_mpi.h mpp_create &&
6433                                { enabled libdrm ||
6434                                  die "ERROR: rkmpp requires --enable-libdrm"; }
6435                              }
6436 enabled vapoursynth       && require_pkg_config vapoursynth "vapoursynth-script >= 42" VSScript.h vsscript_init
6437
6438
6439 if enabled gcrypt; then
6440     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
6441     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
6442         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
6443         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
6444         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
6445             die "ERROR: gcrypt not found"
6446         add_cflags $gcrypt_cflags
6447     else
6448         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
6449     fi
6450 fi
6451
6452 if enabled sdl2; then
6453     SDL2_CONFIG="${cross_prefix}sdl2-config"
6454     test_pkg_config sdl2 "sdl2 >= 2.0.1 sdl2 < 2.1.0" SDL_events.h SDL_PollEvent
6455     if disabled sdl2 && "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6456         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6457         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6458         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6459         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6460         check_func_headers SDL_events.h SDL_PollEvent $sdl2_extralibs $sdl2_cflags &&
6461             enable sdl2
6462     fi
6463     if test $target_os = "mingw32"; then
6464         sdl2_extralibs=$(filter_out '-mwindows' $sdl2_extralibs)
6465     fi
6466 fi
6467
6468 if enabled decklink; then
6469     case $target_os in
6470         mingw32*|mingw64*|win32|win64)
6471             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6472             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6473             ;;
6474     esac
6475 fi
6476
6477 enabled securetransport &&
6478     check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6479     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" ||
6480         disable securetransport
6481
6482 enabled securetransport &&
6483     check_func SecItemImport "-Wl,-framework,CoreFoundation -Wl,-framework,Security"
6484
6485 enabled schannel &&
6486     check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6487     test_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" &&
6488     schannel_extralibs="-lsecur32" ||
6489         disable schannel
6490
6491 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6492 enabled makeinfo \
6493     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6494     && enable makeinfo_html || disable makeinfo_html
6495 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6496 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6497 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6498 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6499
6500 # check V4L2 codecs available in the API
6501 if enabled v4l2_m2m; then
6502     check_headers linux/fb.h
6503     check_headers linux/videodev2.h
6504     test_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6505     check_cc v4l2_m2m linux/videodev2.h "int i = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_VIDEO_M2M | V4L2_BUF_FLAG_LAST;"
6506     check_cc vc1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VC1_ANNEX_G;"
6507     check_cc mpeg1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG1;"
6508     check_cc mpeg2_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG2;"
6509     check_cc mpeg4_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG4;"
6510     check_cc hevc_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_HEVC;"
6511     check_cc h263_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H263;"
6512     check_cc h264_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H264;"
6513     check_cc vp8_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP8;"
6514     check_cc vp9_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP9;"
6515 fi
6516
6517 check_headers sys/videoio.h
6518 test_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6519
6520 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6521 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6522 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6523 # w32api 3.12 had it defined wrong
6524 check_cpp_condition vfwcap_defines vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER"
6525
6526 check_type "dshow.h" IBaseFilter
6527
6528 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6529 check_headers "dev/bktr/ioctl_meteor.h dev/bktr/ioctl_bt848.h"                   ||
6530     check_headers "machine/ioctl_meteor.h machine/ioctl_bt848.h"                 ||
6531     check_headers "dev/video/meteor/ioctl_meteor.h dev/video/bktr/ioctl_bt848.h" ||
6532     check_headers "dev/ic/bt8xx.h"
6533
6534 if check_struct sys/soundcard.h audio_buf_info bytes; then
6535     enable_sanitized sys/soundcard.h
6536 else
6537     test_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_sanitized sys/soundcard.h
6538     #include <sys/soundcard.h>
6539     audio_buf_info abc;
6540 EOF
6541 fi
6542
6543 enabled alsa && { check_pkg_config alsa alsa "alsa/asoundlib.h" snd_pcm_htimestamp ||
6544                   check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound; }
6545
6546 enabled libjack &&
6547     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
6548
6549 enabled sndio && check_lib sndio sndio.h sio_open -lsndio
6550
6551 if enabled libcdio; then
6552     check_pkg_config libcdio libcdio_paranoia "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open ||
6553     check_pkg_config libcdio libcdio_paranoia "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open ||
6554     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6555     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6556     die "ERROR: No usable libcdio/cdparanoia found"
6557 fi
6558
6559 enabled libxcb && check_pkg_config libxcb "xcb >= 1.4" xcb/xcb.h xcb_connect ||
6560     disable libxcb_shm libxcb_shape libxcb_xfixes
6561
6562 if enabled libxcb; then
6563     enabled libxcb_shm    && check_pkg_config libxcb_shm    xcb-shm    xcb/shm.h    xcb_shm_attach
6564     enabled libxcb_shape  && check_pkg_config libxcb_shape  xcb-shape  xcb/shape.h  xcb_shape_get_rectangles
6565     enabled libxcb_xfixes && check_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
6566 fi
6567
6568 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6569
6570 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6571 # the desktop api partition
6572 test_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
6573 #ifdef WINAPI_FAMILY
6574 #include <winapifamily.h>
6575 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
6576 #error desktop, not uwp
6577 #else
6578 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
6579 #endif
6580 #else
6581 #error no family set
6582 #endif
6583 EOF
6584
6585 enabled vaapi &&
6586     check_pkg_config vaapi "libva >= 0.35.0" "va/va.h" vaInitialize
6587
6588 if enabled vaapi; then
6589     check_pkg_config vaapi_drm "libva-drm" "va/va_drm.h" vaGetDisplayDRM
6590
6591     if enabled xlib; then
6592         check_pkg_config vaapi_x11 "libva-x11" "va/va_x11.h" vaGetDisplay
6593     fi
6594
6595     check_cpp_condition vaapi_1 "va/va.h" "VA_CHECK_VERSION(1, 0, 0)"
6596
6597     check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
6598     check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
6599     check_type   "va/va.h va/va_vpp.h" "VAProcFilterParameterBufferHDRToneMapping"
6600     check_struct "va/va.h va/va_vpp.h" "VAProcPipelineCaps" rotation_flags
6601     check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
6602     check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
6603     check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
6604     check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
6605 fi
6606
6607 if enabled_all opencl libdrm ; then
6608     check_type "CL/cl_intel.h" "clCreateImageFromFdINTEL_fn" &&
6609         enable opencl_drm_beignet
6610     check_func_headers "CL/cl_ext.h" clImportMemoryARM &&
6611         enable opencl_drm_arm
6612 fi
6613
6614 if enabled_all opencl vaapi ; then
6615     if enabled opencl_drm_beignet ; then
6616         enable opencl_vaapi_beignet
6617     else
6618         check_type "CL/cl.h CL/cl_va_api_media_sharing_intel.h" "clCreateFromVA_APIMediaSurfaceINTEL_fn" &&
6619             enable opencl_vaapi_intel_media
6620     fi
6621 fi
6622
6623 if enabled_all opencl dxva2 ; then
6624     check_type "CL/cl_dx9_media_sharing.h" cl_dx9_surface_info_khr &&
6625         enable opencl_dxva2
6626 fi
6627
6628 if enabled_all opencl d3d11va ; then
6629     check_type "CL/cl_d3d11.h" clGetDeviceIDsFromD3D11KHR_fn &&
6630         enable opencl_d3d11
6631 fi
6632
6633 enabled vdpau &&
6634     check_cpp_condition vdpau vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP"
6635
6636 enabled vdpau &&
6637     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6638
6639 enabled crystalhd && check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
6640
6641 enabled vulkan &&
6642     require_pkg_config vulkan "vulkan >= 1.1.97" "vulkan/vulkan.h" vkCreateInstance
6643
6644 if enabled x86; then
6645     case $target_os in
6646         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6647             ;;
6648         *)
6649             disable ffnvcodec cuvid nvdec nvenc
6650             ;;
6651     esac
6652 elif enabled ppc64 && ! enabled bigendian; then
6653     case $target_os in
6654         linux)
6655             ;;
6656         *)
6657             disable ffnvcodec cuvid nvdec nvenc
6658             ;;
6659     esac
6660 else
6661     disable ffnvcodec cuvid nvdec nvenc
6662 fi
6663
6664 enabled ffnvcodec && enable cuda
6665
6666 enabled nvenc &&
6667     test_cc -I$source_path <<EOF || disable nvenc
6668 #include <ffnvcodec/nvEncodeAPI.h>
6669 NV_ENCODE_API_FUNCTION_LIST flist;
6670 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6671 int main(void) { return 0; }
6672 EOF
6673
6674 enabled amf &&
6675     check_cpp_condition amf "AMF/core/Version.h" \
6676         "(AMF_VERSION_MAJOR << 48 | AMF_VERSION_MINOR << 32 | AMF_VERSION_RELEASE << 16 | AMF_VERSION_BUILD_NUM) >= 0x0001000400090000"
6677
6678 # Funny iconv installations are not unusual, so check it after all flags have been set
6679 if enabled libc_iconv; then
6680     check_func_headers iconv.h iconv
6681 elif enabled iconv; then
6682     check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6683 fi
6684
6685 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6686
6687 # add some useful compiler flags if supported
6688 check_cflags -Wdeclaration-after-statement
6689 check_cflags -Wall
6690 check_cflags -Wdisabled-optimization
6691 check_cflags -Wpointer-arith
6692 check_cflags -Wredundant-decls
6693 check_cflags -Wwrite-strings
6694 check_cflags -Wtype-limits
6695 check_cflags -Wundef
6696 check_cflags -Wmissing-prototypes
6697 check_cflags -Wno-pointer-to-int-cast
6698 check_cflags -Wstrict-prototypes
6699 check_cflags -Wempty-body
6700
6701 if enabled extra_warnings; then
6702     check_cflags -Wcast-qual
6703     check_cflags -Wextra
6704     check_cflags -Wpedantic
6705 fi
6706
6707 check_disable_warning(){
6708     warning_flag=-W${1#-Wno-}
6709     test_cflags $unknown_warning_flags $warning_flag && add_cflags $1
6710 }
6711
6712 test_cflags -Werror=unused-command-line-argument &&
6713     append unknown_warning_flags "-Werror=unused-command-line-argument"
6714 test_cflags -Werror=unknown-warning-option &&
6715     append unknown_warning_flags "-Werror=unknown-warning-option"
6716
6717 check_disable_warning -Wno-parentheses
6718 check_disable_warning -Wno-switch
6719 check_disable_warning -Wno-format-zero-length
6720 check_disable_warning -Wno-pointer-sign
6721 check_disable_warning -Wno-unused-const-variable
6722 check_disable_warning -Wno-bool-operation
6723 check_disable_warning -Wno-char-subscripts
6724
6725 check_disable_warning_headers(){
6726     warning_flag=-W${1#-Wno-}
6727     test_cflags $warning_flag && add_cflags_headers $1
6728 }
6729
6730 check_disable_warning_headers -Wno-deprecated-declarations
6731 check_disable_warning_headers -Wno-unused-variable
6732
6733 test_cc <<EOF && enable blocks_extension
6734 void (^block)(void);
6735 EOF
6736
6737 # add some linker flags
6738 check_ldflags -Wl,--warn-common
6739 check_ldflags -Wl,-rpath-link=:libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6740 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir && add_ldsoflags -Wl,-rpath,$libdir
6741 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6742
6743 # add some strip flags
6744 check_stripflags -x
6745
6746 enabled neon_clobber_test &&
6747     check_ldflags -Wl,--wrap,avcodec_open2              \
6748                   -Wl,--wrap,avcodec_decode_audio4      \
6749                   -Wl,--wrap,avcodec_decode_video2      \
6750                   -Wl,--wrap,avcodec_decode_subtitle2   \
6751                   -Wl,--wrap,avcodec_encode_audio2      \
6752                   -Wl,--wrap,avcodec_encode_video2      \
6753                   -Wl,--wrap,avcodec_encode_subtitle    \
6754                   -Wl,--wrap,avcodec_send_packet        \
6755                   -Wl,--wrap,avcodec_receive_packet     \
6756                   -Wl,--wrap,avcodec_send_frame         \
6757                   -Wl,--wrap,avcodec_receive_frame      \
6758                   -Wl,--wrap,swr_convert                \
6759                   -Wl,--wrap,avresample_convert ||
6760     disable neon_clobber_test
6761
6762 enabled xmm_clobber_test &&
6763     check_ldflags -Wl,--wrap,avcodec_open2              \
6764                   -Wl,--wrap,avcodec_decode_audio4      \
6765                   -Wl,--wrap,avcodec_decode_video2      \
6766                   -Wl,--wrap,avcodec_decode_subtitle2   \
6767                   -Wl,--wrap,avcodec_encode_audio2      \
6768                   -Wl,--wrap,avcodec_encode_video2      \
6769                   -Wl,--wrap,avcodec_encode_subtitle    \
6770                   -Wl,--wrap,avcodec_send_packet        \
6771                   -Wl,--wrap,avcodec_receive_packet     \
6772                   -Wl,--wrap,avcodec_send_frame         \
6773                   -Wl,--wrap,avcodec_receive_frame      \
6774                   -Wl,--wrap,swr_convert                \
6775                   -Wl,--wrap,avresample_convert         \
6776                   -Wl,--wrap,sws_scale ||
6777     disable xmm_clobber_test
6778
6779 check_ld "cc" proper_dce <<EOF
6780 extern const int array[512];
6781 static inline int func(void) { return array[0]; }
6782 int main(void) { return 0; }
6783 EOF
6784
6785 if enabled proper_dce; then
6786     echo "X { local: *; };" > $TMPV
6787     if test_ldflags -Wl,${version_script},$TMPV; then
6788         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6789         quotes='""'
6790         test_cc <<EOF && enable symver_asm_label
6791 void ff_foo(void) __asm__ ("av_foo@VERSION");
6792 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6793 EOF
6794         test_cc <<EOF && enable symver_gnu_asm
6795 __asm__(".symver ff_foo,av_foo@VERSION");
6796 void ff_foo(void) {}
6797 EOF
6798     fi
6799 fi
6800
6801 if [ -z "$optflags" ]; then
6802     if enabled small; then
6803         optflags=$cflags_size
6804     elif enabled optimizations; then
6805         optflags=$cflags_speed
6806     else
6807         optflags=$cflags_noopt
6808     fi
6809 fi
6810
6811 check_optflags(){
6812     check_cflags "$@"
6813     enabled lto && check_ldflags "$@"
6814 }
6815
6816 check_optflags $optflags
6817 check_optflags -fno-math-errno
6818 check_optflags -fno-signed-zeros
6819
6820 if enabled lto; then
6821     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6822     check_cflags  -flto
6823     check_ldflags -flto $cpuflags
6824     disable inline_asm_direct_symbol_refs
6825 fi
6826
6827 enabled ftrapv && check_cflags -ftrapv
6828
6829 test_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6830 int x;
6831 EOF
6832
6833
6834 if enabled icc; then
6835     # Just warnings, no remarks
6836     check_cflags -w1
6837     # -wd: Disable following warnings
6838     # 144, 167, 556: -Wno-pointer-sign
6839     # 188: enumerated type mixed with another type
6840     # 1292: attribute "foo" ignored
6841     # 1419: external declaration in primary source file
6842     # 10006: ignoring unknown option -fno-signed-zeros
6843     # 10148: ignoring unknown option -Wno-parentheses
6844     # 10156: ignoring option '-W'; no argument required
6845     # 13200: No EMMS instruction before call to function
6846     # 13203: No EMMS instruction before return from function
6847     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6848     # 11030: Warning unknown option --as-needed
6849     # 10156: ignoring option '-export'; no argument required
6850     check_ldflags -wd10156,11030
6851     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6852     enable ebp_available
6853     # The test above does not test linking
6854     enabled lto && disable symver_asm_label
6855     if enabled x86_32; then
6856         icc_version=$($cc -dumpversion)
6857         test ${icc_version%%.*} -ge 11 &&
6858             check_cflags -falign-stack=maintain-16-byte ||
6859             disable aligned_stack
6860     fi
6861 elif enabled gcc; then
6862     check_optflags -fno-tree-vectorize
6863     check_cflags -Werror=format-security
6864     check_cflags -Werror=implicit-function-declaration
6865     check_cflags -Werror=missing-prototypes
6866     check_cflags -Werror=return-type
6867     check_cflags -Werror=vla
6868     check_cflags -Wformat
6869     check_cflags -fdiagnostics-color=auto
6870     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6871     if enabled x86_32; then
6872         case $target_os in
6873         *bsd*)
6874             # BSDs don't guarantee a 16 byte aligned stack, but we can
6875             # request GCC to try to maintain 16 byte alignment throughout
6876             # function calls. Library entry points that might call assembly
6877             # functions align the stack. (The parameter means 2^4 bytes.)
6878             check_cflags -mpreferred-stack-boundary=4
6879             ;;
6880         esac
6881     fi
6882 elif enabled llvm_gcc; then
6883     check_cflags -mllvm -stack-alignment=16
6884 elif enabled clang; then
6885     if enabled x86_32; then
6886         # Clang doesn't support maintaining alignment without assuming the
6887         # same alignment in every function. If 16 byte alignment would be
6888         # enabled, one would also have to either add attribute_align_arg on
6889         # every single entry point into the libraries or enable -mstackrealign
6890         # (doing stack realignment in every single function).
6891         case $target_os in
6892         mingw32|win32|*bsd*)
6893             disable aligned_stack
6894             ;;
6895         *)
6896             check_cflags -mllvm -stack-alignment=16
6897             check_cflags -mstack-alignment=16
6898             ;;
6899         esac
6900     else
6901         check_cflags -mllvm -stack-alignment=16
6902         check_cflags -mstack-alignment=16
6903     fi
6904     check_cflags -Qunused-arguments
6905     check_cflags -Werror=implicit-function-declaration
6906     check_cflags -Werror=missing-prototypes
6907     check_cflags -Werror=return-type
6908 elif enabled cparser; then
6909     add_cflags -Wno-missing-variable-declarations
6910     add_cflags -Wno-empty-statement
6911 elif enabled armcc; then
6912     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6913     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6914     # 2523: use of inline assembly is deprecated
6915     add_cflags -W${armcc_opt},--diag_suppress=2523
6916     add_cflags -W${armcc_opt},--diag_suppress=1207
6917     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6918     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6919     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6920     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6921 elif enabled pathscale; then
6922     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6923     disable inline_asm
6924 elif enabled_any msvc icl; then
6925     enabled x86_32 && disable aligned_stack
6926     enabled_all x86_32 debug && add_cflags -Oy-
6927     enabled debug && add_ldflags -debug
6928     enable pragma_deprecated
6929     if enabled icl; then
6930         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6931         # (correctly) on icl 13.x.
6932         test_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6933             add_cflags -Qansi-alias
6934         # Some inline asm is not compilable in debug
6935         if enabled debug; then
6936             disable ebp_available
6937             disable ebx_available
6938         fi
6939     fi
6940     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6941     check_cpp_condition log2 crtversion.h "_VC_CRT_MAJOR_VERSION >= 12"
6942     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6943     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6944     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6945     # MSVC 2013 and newer can handle it fine.
6946     # If this declspec fails, force including stdlib.h before the restrict redefinition
6947     # happens in config.h.
6948     if [ $restrict_keyword != restrict ]; then
6949         test_cc <<EOF || add_cflags -FIstdlib.h
6950 __declspec($restrict_keyword) void *foo(int);
6951 EOF
6952     fi
6953     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6954     # Issue has been fixed in MSVC v19.00.24218.
6955     test_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6956         check_cflags -d2SSAOptimizer-
6957     # enable utf-8 source processing on VS2015 U2 and newer
6958     test_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6959         add_cflags -utf-8
6960 fi
6961
6962 for pfx in "" host_; do
6963     varname=${pfx%_}cc_type
6964     eval "type=\$$varname"
6965     if [ "$type" = "msvc" ]; then
6966         test_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6967 static inline int foo(int a) { return a; }
6968 EOF
6969     fi
6970 done
6971
6972 case $as_type in
6973     clang)
6974         add_asflags -Qunused-arguments
6975     ;;
6976 esac
6977
6978 case $ld_type in
6979     clang)
6980         check_ldflags -Qunused-arguments
6981     ;;
6982 esac
6983
6984 enable frame_thread_encoder
6985
6986 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6987
6988 check_deps $CONFIG_LIST       \
6989            $CONFIG_EXTRA      \
6990            $HAVE_LIST         \
6991            $ALL_COMPONENTS    \
6992
6993 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"
6994 enabled avresample && warn "Building with deprecated library libavresample"
6995
6996 case $target_os in
6997 haiku)
6998     disable memalign
6999     disable posix_memalign
7000     ;;
7001 *-dos|freedos|opendos)
7002     if test_cpp_condition sys/version.h "defined(__DJGPP__) && __DJGPP__ == 2 && __DJGPP_MINOR__ == 5"; then
7003         disable memalign
7004     fi
7005     ;;
7006 esac
7007
7008 flatten_extralibs(){
7009     nested_entries=
7010     list_name=$1
7011     eval list=\$${1}
7012     for entry in $list; do
7013         entry_copy=$entry
7014         resolve entry_copy
7015         flat_entries=
7016         for e in $entry_copy; do
7017             case $e in
7018                 *_extralibs) nested_entries="$nested_entries$e ";;
7019                           *) flat_entries="$flat_entries$e ";;
7020             esac
7021         done
7022         eval $entry="\$flat_entries"
7023     done
7024     append $list_name "$nested_entries"
7025
7026     resolve nested_entries
7027     if test -n "$(filter '*_extralibs' $nested_entries)"; then
7028         flatten_extralibs $list_name
7029     fi
7030 }
7031
7032 flatten_extralibs_wrapper(){
7033     list_name=$1
7034     flatten_extralibs $list_name
7035     unique $list_name
7036     resolve $list_name
7037     eval $list_name=\$\(\$ldflags_filter \$$list_name\)
7038     eval printf \''%s'\' \""\$$list_name"\"
7039 }
7040
7041 for linkunit in $LIBRARY_LIST; do
7042     unset current_extralibs
7043     eval components=\$$(toupper ${linkunit})_COMPONENTS_LIST
7044     for comp in ${components}; do
7045         enabled $comp || continue
7046         comp_extralibs="${comp}_extralibs"
7047         append current_extralibs $comp_extralibs
7048     done
7049     eval prepend ${linkunit}_extralibs $current_extralibs
7050 done
7051
7052 for linkunit in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
7053     eval ${linkunit}_extralibs=\$\(flatten_extralibs_wrapper ${linkunit}_extralibs\)
7054 done
7055
7056 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
7057
7058 for thread in $THREADS_LIST; do
7059     if enabled $thread; then
7060         test -n "$thread_type" &&
7061             die "ERROR: Only one thread type must be selected." ||
7062             thread_type="$thread"
7063     fi
7064 done
7065
7066 if disabled stdatomic; then
7067     if enabled atomics_gcc; then
7068         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
7069     elif enabled atomics_win32; then
7070         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
7071     elif enabled atomics_suncc; then
7072         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
7073     elif enabled pthreads; then
7074         add_compat atomics/pthread/stdatomic.o
7075         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
7076     else
7077         enabled threads && die "Threading is enabled, but no atomics are available"
7078         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
7079     fi
7080 fi
7081
7082 # Check if requested libraries were found.
7083 for lib in $AUTODETECT_LIBS; do
7084     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
7085 done
7086
7087 enabled zlib && add_cppflags -DZLIB_CONST
7088
7089 # conditional library dependencies, in any order
7090 enabled afftdn_filter       && prepend avfilter_deps "avcodec"
7091 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
7092 enabled afir_filter         && prepend avfilter_deps "avcodec"
7093 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
7094 enabled aresample_filter    && prepend avfilter_deps "swresample"
7095 enabled atempo_filter       && prepend avfilter_deps "avcodec"
7096 enabled bm3d_filter         && prepend avfilter_deps "avcodec"
7097 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
7098 enabled convolve_filter     && prepend avfilter_deps "avcodec"
7099 enabled deconvolve_filter   && prepend avfilter_deps "avcodec"
7100 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
7101 enabled elbg_filter         && prepend avfilter_deps "avcodec"
7102 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
7103 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
7104 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
7105 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
7106 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
7107 enabled pan_filter          && prepend avfilter_deps "swresample"
7108 enabled pp_filter           && prepend avfilter_deps "postproc"
7109 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
7110 enabled resample_filter && prepend avfilter_deps "avresample"
7111 enabled sab_filter          && prepend avfilter_deps "swscale"
7112 enabled scale_filter    && prepend avfilter_deps "swscale"
7113 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
7114 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
7115 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
7116 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
7117 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
7118 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
7119 enabled smartblur_filter    && prepend avfilter_deps "swscale"
7120 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
7121 enabled spp_filter          && prepend avfilter_deps "avcodec"
7122 enabled sr_filter           && prepend avfilter_deps "avformat swscale"
7123 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
7124 enabled uspp_filter         && prepend avfilter_deps "avcodec"
7125 enabled zoompan_filter      && prepend avfilter_deps "swscale"
7126
7127 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
7128
7129 #FIXME
7130 enabled_any sdl2_outdev opengl_outdev && enabled sdl2 &&
7131     add_cflags $(filter_out '-Dmain=SDL_main' $sdl2_cflags)
7132
7133 enabled opus_decoder    && prepend avcodec_deps "swresample"
7134
7135 # reorder the items at var $1 to align with the items order at var $2 .
7136 # die if an item at $1 is not at $2 .
7137 reorder_by(){
7138     eval rb_in=\$$1
7139     eval rb_ordered=\$$2
7140
7141     for rb in $rb_in; do
7142         is_in $rb $rb_ordered || die "$rb at \$$1 is not at \$$2"
7143     done
7144
7145     rb_out=
7146     for rb in $rb_ordered; do
7147         is_in $rb $rb_in && rb_out="$rb_out$rb "
7148     done
7149     eval $1=\$rb_out
7150 }
7151
7152 # deps-expand fflib $1:  N x {append all expanded deps; unique}
7153 # within a set of N items, N expansions are enough to expose a cycle.
7154 expand_deps(){
7155     unique ${1}_deps  # required for the early break test.
7156     for dummy in $LIBRARY_LIST; do  # N iteratios
7157         eval deps=\$${1}_deps
7158         append ${1}_deps $(map 'eval echo \$${v}_deps' $deps)
7159         unique ${1}_deps
7160         eval '[ ${#deps} = ${#'${1}_deps'} ]' && break  # doesn't expand anymore
7161     done
7162
7163     eval is_in $1 \$${1}_deps && die "Dependency cycle at ${1}_deps"
7164     reorder_by ${1}_deps LIBRARY_LIST  # linking order is expected later
7165 }
7166
7167 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
7168 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
7169
7170 map 'expand_deps $v' $LIBRARY_LIST
7171
7172 if test "$quiet" != "yes"; then
7173
7174 echo "install prefix            $prefix"
7175 echo "source path               $source_path"
7176 echo "C compiler                $cc"
7177 echo "C library                 $libc_type"
7178 if test "$host_cc" != "$cc"; then
7179     echo "host C compiler           $host_cc"
7180     echo "host C library            $host_libc_type"
7181 fi
7182 echo "ARCH                      $arch ($cpu)"
7183 if test "$build_suffix" != ""; then
7184     echo "build suffix              $build_suffix"
7185 fi
7186 if test "$progs_suffix" != ""; then
7187     echo "progs suffix              $progs_suffix"
7188 fi
7189 if test "$extra_version" != ""; then
7190     echo "version string suffix     $extra_version"
7191 fi
7192 echo "big-endian                ${bigendian-no}"
7193 echo "runtime cpu detection     ${runtime_cpudetect-no}"
7194 if enabled x86; then
7195     echo "standalone assembly       ${x86asm-no}"
7196     echo "x86 assembler             ${x86asmexe}"
7197     echo "MMX enabled               ${mmx-no}"
7198     echo "MMXEXT enabled            ${mmxext-no}"
7199     echo "3DNow! enabled            ${amd3dnow-no}"
7200     echo "3DNow! extended enabled   ${amd3dnowext-no}"
7201     echo "SSE enabled               ${sse-no}"
7202     echo "SSSE3 enabled             ${ssse3-no}"
7203     echo "AESNI enabled             ${aesni-no}"
7204     echo "AVX enabled               ${avx-no}"
7205     echo "AVX2 enabled              ${avx2-no}"
7206     echo "AVX-512 enabled           ${avx512-no}"
7207     echo "XOP enabled               ${xop-no}"
7208     echo "FMA3 enabled              ${fma3-no}"
7209     echo "FMA4 enabled              ${fma4-no}"
7210     echo "i686 features enabled     ${i686-no}"
7211     echo "CMOV is fast              ${fast_cmov-no}"
7212     echo "EBX available             ${ebx_available-no}"
7213     echo "EBP available             ${ebp_available-no}"
7214 fi
7215 if enabled aarch64; then
7216     echo "NEON enabled              ${neon-no}"
7217     echo "VFP enabled               ${vfp-no}"
7218 fi
7219 if enabled arm; then
7220     echo "ARMv5TE enabled           ${armv5te-no}"
7221     echo "ARMv6 enabled             ${armv6-no}"
7222     echo "ARMv6T2 enabled           ${armv6t2-no}"
7223     echo "VFP enabled               ${vfp-no}"
7224     echo "NEON enabled              ${neon-no}"
7225     echo "THUMB enabled             ${thumb-no}"
7226 fi
7227 if enabled mips; then
7228     echo "MIPS FPU enabled          ${mipsfpu-no}"
7229     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
7230     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
7231     echo "MIPS MSA enabled          ${msa-no}"
7232     echo "MIPS MSA2 enabled         ${msa2-no}"
7233     echo "LOONGSON MMI enabled      ${mmi-no}"
7234 fi
7235 if enabled ppc; then
7236     echo "AltiVec enabled           ${altivec-no}"
7237     echo "VSX enabled               ${vsx-no}"
7238     echo "POWER8 enabled            ${power8-no}"
7239     echo "PPC 4xx optimizations     ${ppc4xx-no}"
7240     echo "dcbzl available           ${dcbzl-no}"
7241 fi
7242 echo "debug symbols             ${debug-no}"
7243 echo "strip symbols             ${stripping-no}"
7244 echo "optimize for size         ${small-no}"
7245 echo "optimizations             ${optimizations-no}"
7246 echo "static                    ${static-no}"
7247 echo "shared                    ${shared-no}"
7248 echo "postprocessing support    ${postproc-no}"
7249 echo "network support           ${network-no}"
7250 echo "threading support         ${thread_type-no}"
7251 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
7252 echo "texi2html enabled         ${texi2html-no}"
7253 echo "perl enabled              ${perl-no}"
7254 echo "pod2man enabled           ${pod2man-no}"
7255 echo "makeinfo enabled          ${makeinfo-no}"
7256 echo "makeinfo supports HTML    ${makeinfo_html-no}"
7257 test -n "$random_seed" &&
7258     echo "random seed               ${random_seed}"
7259 echo
7260
7261 echo "External libraries:"
7262 print_enabled '' $EXTERNAL_LIBRARY_LIST $EXTERNAL_AUTODETECT_LIBRARY_LIST | print_in_columns
7263 echo
7264
7265 echo "External libraries providing hardware acceleration:"
7266 print_enabled '' $HWACCEL_LIBRARY_LIST $HWACCEL_AUTODETECT_LIBRARY_LIST | print_in_columns
7267 echo
7268
7269 echo "Libraries:"
7270 print_enabled '' $LIBRARY_LIST | print_in_columns
7271 echo
7272
7273 echo "Programs:"
7274 print_enabled '' $PROGRAM_LIST | print_in_columns
7275 echo
7276
7277 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
7278     echo "Enabled ${type}s:"
7279     eval list=\$$(toupper $type)_LIST
7280     print_enabled '_*' $list | print_in_columns
7281     echo
7282 done
7283
7284 if test -n "$ignore_tests"; then
7285     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
7286     echo "Ignored FATE tests:"
7287     echo $ignore_tests | print_in_columns
7288     echo
7289 fi
7290
7291 echo "License: $license"
7292
7293 fi # test "$quiet" != "yes"
7294
7295 if test -n "$WARN_IF_GETS_DISABLED_LIST"; then
7296     for cfg in $WARN_IF_GETS_DISABLED_LIST; do
7297         if disabled $cfg; then
7298             varname=${cfg}_disable_reason
7299             eval "warn \"Disabled $cfg because \$$varname\""
7300         fi
7301     done
7302 fi
7303
7304 if test -n "$WARNINGS"; then
7305     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
7306     enabled fatal_warnings && exit 1
7307 fi
7308
7309 test -e Makefile || echo "include $source_path/Makefile" > Makefile
7310
7311 esc(){
7312     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
7313 }
7314
7315 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
7316
7317 enabled stripping || strip="echo skipping strip"
7318 enabled stripping || striptype=""
7319
7320 config_files="$TMPH ffbuild/config.mak doc/config.texi"
7321
7322 cat > ffbuild/config.mak <<EOF
7323 # Automatically generated by configure - do not modify!
7324 ifndef FFMPEG_CONFIG_MAK
7325 FFMPEG_CONFIG_MAK=1
7326 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
7327 prefix=$prefix
7328 LIBDIR=\$(DESTDIR)$libdir
7329 SHLIBDIR=\$(DESTDIR)$shlibdir
7330 INCDIR=\$(DESTDIR)$incdir
7331 BINDIR=\$(DESTDIR)$bindir
7332 DATADIR=\$(DESTDIR)$datadir
7333 DOCDIR=\$(DESTDIR)$docdir
7334 MANDIR=\$(DESTDIR)$mandir
7335 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
7336 INSTALL_NAME_DIR=$install_name_dir
7337 SRC_PATH=$source_path
7338 SRC_LINK=$source_link
7339 ifndef MAIN_MAKEFILE
7340 SRC_PATH:=\$(SRC_PATH:.%=..%)
7341 endif
7342 CC_IDENT=$cc_ident
7343 ARCH=$arch
7344 INTRINSICS=$intrinsics
7345 EXTERN_PREFIX=$extern_prefix
7346 CC=$cc
7347 CXX=$cxx
7348 AS=$as
7349 OBJCC=$objcc
7350 LD=$ld
7351 DEPCC=$dep_cc
7352 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
7353 DEPAS=$as
7354 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
7355 X86ASM=$x86asmexe
7356 DEPX86ASM=$x86asmexe
7357 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
7358 AR=$ar
7359 ARFLAGS=$arflags
7360 AR_O=$ar_o
7361 AR_CMD=$ar
7362 NM_CMD=$nm
7363 RANLIB=$ranlib
7364 STRIP=$strip
7365 STRIPTYPE=$striptype
7366 NVCC=$nvcc
7367 CP=cp -p
7368 LN_S=$ln_s
7369 CPPFLAGS=$CPPFLAGS
7370 CFLAGS=$CFLAGS
7371 CXXFLAGS=$CXXFLAGS
7372 OBJCFLAGS=$OBJCFLAGS
7373 ASFLAGS=$ASFLAGS
7374 NVCCFLAGS=$nvccflags
7375 AS_C=$AS_C
7376 AS_O=$AS_O
7377 OBJCC_C=$OBJCC_C
7378 OBJCC_E=$OBJCC_E
7379 OBJCC_O=$OBJCC_O
7380 CC_C=$CC_C
7381 CC_E=$CC_E
7382 CC_O=$CC_O
7383 CXX_C=$CXX_C
7384 CXX_O=$CXX_O
7385 NVCC_C=$NVCC_C
7386 NVCC_O=$NVCC_O
7387 LD_O=$LD_O
7388 X86ASM_O=$X86ASM_O
7389 LD_LIB=$LD_LIB
7390 LD_PATH=$LD_PATH
7391 DLLTOOL=$dlltool
7392 WINDRES=$windres
7393 DEPWINDRES=$dep_cc
7394 DOXYGEN=$doxygen
7395 LDFLAGS=$LDFLAGS
7396 LDEXEFLAGS=$LDEXEFLAGS
7397 LDSOFLAGS=$LDSOFLAGS
7398 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
7399 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
7400 X86ASMFLAGS=$X86ASMFLAGS
7401 BUILDSUF=$build_suffix
7402 PROGSSUF=$progs_suffix
7403 FULLNAME=$FULLNAME
7404 LIBPREF=$LIBPREF
7405 LIBSUF=$LIBSUF
7406 LIBNAME=$LIBNAME
7407 SLIBPREF=$SLIBPREF
7408 SLIBSUF=$SLIBSUF
7409 EXESUF=$EXESUF
7410 EXTRA_VERSION=$extra_version
7411 CCDEP=$CCDEP
7412 CXXDEP=$CXXDEP
7413 CCDEP_FLAGS=$CCDEP_FLAGS
7414 ASDEP=$ASDEP
7415 ASDEP_FLAGS=$ASDEP_FLAGS
7416 X86ASMDEP=$X86ASMDEP
7417 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
7418 CC_DEPFLAGS=$CC_DEPFLAGS
7419 AS_DEPFLAGS=$AS_DEPFLAGS
7420 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
7421 HOSTCC=$host_cc
7422 HOSTLD=$host_ld
7423 HOSTCFLAGS=$host_cflags
7424 HOSTCPPFLAGS=$host_cppflags
7425 HOSTEXESUF=$HOSTEXESUF
7426 HOSTLDFLAGS=$host_ldflags
7427 HOSTEXTRALIBS=$host_extralibs
7428 DEPHOSTCC=$host_cc
7429 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
7430 HOSTCCDEP=$HOSTCCDEP
7431 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
7432 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
7433 HOSTCC_C=$HOSTCC_C
7434 HOSTCC_O=$HOSTCC_O
7435 HOSTLD_O=$HOSTLD_O
7436 TARGET_EXEC=$target_exec $target_exec_args
7437 TARGET_PATH=$target_path
7438 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
7439 CFLAGS-ffplay=${sdl2_cflags}
7440 CFLAGS_HEADERS=$CFLAGS_HEADERS
7441 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
7442 EXTRALIBS=$extralibs
7443 COMPAT_OBJS=$compat_objs
7444 INSTALL=$install
7445 LIBTARGET=${LIBTARGET}
7446 SLIBNAME=${SLIBNAME}
7447 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
7448 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
7449 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
7450 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
7451 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
7452 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
7453 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
7454 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
7455 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
7456 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
7457 NOREDZONE_FLAGS=$noredzone_flags
7458 LIBFUZZER_PATH=$libfuzzer_path
7459 IGNORE_TESTS=$ignore_tests
7460 EOF
7461
7462 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
7463
7464 for entry in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
7465     eval echo "EXTRALIBS-${entry}=\$${entry}_extralibs" >> ffbuild/config.mak
7466 done
7467
7468 cat > $TMPH <<EOF
7469 /* Automatically generated by configure - do not modify! */
7470 #ifndef FFMPEG_CONFIG_H
7471 #define FFMPEG_CONFIG_H
7472 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
7473 #define FFMPEG_LICENSE "$(c_escape $license)"
7474 #define CONFIG_THIS_YEAR 2020
7475 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
7476 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
7477 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
7478 #define av_restrict $restrict_keyword
7479 #define EXTERN_PREFIX "${extern_prefix}"
7480 #define EXTERN_ASM ${extern_prefix}
7481 #define BUILDSUF "$build_suffix"
7482 #define SLIBSUF "$SLIBSUF"
7483 #define HAVE_MMX2 HAVE_MMXEXT
7484 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
7485 EOF
7486
7487 test -n "$assert_level" &&
7488     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
7489
7490 test -n "$malloc_prefix" &&
7491     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
7492
7493 if enabled x86asm; then
7494     append config_files $TMPASM
7495     cat > $TMPASM <<EOF
7496 ; Automatically generated by configure - do not modify!
7497 EOF
7498 fi
7499
7500 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
7501
7502
7503 mkdir -p doc
7504 mkdir -p tests
7505 mkdir -p tests/api
7506 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
7507
7508 print_config ARCH_   "$config_files" $ARCH_LIST
7509 print_config HAVE_   "$config_files" $HAVE_LIST
7510 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
7511                                      $CONFIG_EXTRA      \
7512                                      $ALL_COMPONENTS    \
7513
7514 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
7515 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
7516
7517 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
7518 cp_if_changed $TMPH config.h
7519 touch ffbuild/.config
7520
7521 enabled x86asm && cp_if_changed $TMPASM config.asm
7522
7523 cat > $TMPH <<EOF
7524 /* Generated by ffmpeg configure */
7525 #ifndef AVUTIL_AVCONFIG_H
7526 #define AVUTIL_AVCONFIG_H
7527 EOF
7528
7529 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
7530
7531 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
7532
7533 cp_if_changed $TMPH libavutil/avconfig.h
7534
7535 # full_filter_name_foo=vf_foo
7536 # full_filter_name_bar=asrc_bar
7537 # ...
7538 eval "$(sed -n "s/^extern AVFilter ff_\([avfsinkrc]\{2,5\}\)_\(.*\);/full_filter_name_\2=\1_\2/p" $source_path/libavfilter/allfilters.c)"
7539
7540 # generate the lists of enabled components
7541 print_enabled_components(){
7542     file=$1
7543     struct_name=$2
7544     name=$3
7545     shift 3
7546     echo "static const $struct_name * const $name[] = {" > $TMPH
7547     for c in $*; do
7548         if enabled $c; then
7549             case $name in
7550                 filter_list)
7551                     eval c=\$full_filter_name_${c%_filter}
7552                 ;;
7553                 indev_list)
7554                     c=${c%_indev}_demuxer
7555                 ;;
7556                 outdev_list)
7557                     c=${c%_outdev}_muxer
7558                 ;;
7559             esac
7560             printf "    &ff_%s,\n" $c >> $TMPH
7561         fi
7562     done
7563     if [ "$name" = "filter_list" ]; then
7564         for c in asrc_abuffer vsrc_buffer asink_abuffer vsink_buffer; do
7565             printf "    &ff_%s,\n" $c >> $TMPH
7566         done
7567     fi
7568     echo "    NULL };" >> $TMPH
7569     cp_if_changed $TMPH $file
7570 }
7571
7572 print_enabled_components libavfilter/filter_list.c AVFilter filter_list $FILTER_LIST
7573 print_enabled_components libavcodec/codec_list.c AVCodec codec_list $CODEC_LIST
7574 print_enabled_components libavcodec/parser_list.c AVCodecParser parser_list $PARSER_LIST
7575 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
7576 print_enabled_components libavformat/demuxer_list.c AVInputFormat demuxer_list $DEMUXER_LIST
7577 print_enabled_components libavformat/muxer_list.c AVOutputFormat muxer_list $MUXER_LIST
7578 print_enabled_components libavdevice/indev_list.c AVInputFormat indev_list $INDEV_LIST
7579 print_enabled_components libavdevice/outdev_list.c AVOutputFormat outdev_list $OUTDEV_LIST
7580 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
7581
7582 # Settings for pkg-config files
7583
7584 cat > $TMPH <<EOF
7585 # Automatically generated by configure - do not modify!
7586 shared=$shared
7587 build_suffix=$build_suffix
7588 prefix=$prefix
7589 libdir=$libdir
7590 incdir=$incdir
7591 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
7592 source_path=${source_path}
7593 LIBPREF=${LIBPREF}
7594 LIBSUF=${LIBSUF}
7595 extralibs_avutil="$avutil_extralibs"
7596 extralibs_avcodec="$avcodec_extralibs"
7597 extralibs_avformat="$avformat_extralibs"
7598 extralibs_avdevice="$avdevice_extralibs"
7599 extralibs_avfilter="$avfilter_extralibs"
7600 extralibs_avresample="$avresample_extralibs"
7601 extralibs_postproc="$postproc_extralibs"
7602 extralibs_swscale="$swscale_extralibs"
7603 extralibs_swresample="$swresample_extralibs"
7604 EOF
7605
7606 for lib in $LIBRARY_LIST; do
7607     lib_deps="$(eval echo \$${lib}_deps)"
7608     echo ${lib}_deps=\"$lib_deps\" >> $TMPH
7609 done
7610
7611 cp_if_changed $TMPH ffbuild/config.sh