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