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-librsvg         enable SVG rasterization via librsvg [no]
 258   --enable-librubberband   enable rubberband needed for rubberband filter [no]
 259   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 260   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 261   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 262   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
 263   --enable-libsoxr         enable Include libsoxr resampling [no]
 264   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 265   --enable-libsrt          enable Haivision SRT protocol via libsrt [no]
 266   --enable-libssh          enable SFTP protocol via libssh [no]
 267   --enable-libtensorflow   enable TensorFlow as a DNN module backend
 268                            for DNN based filters like sr [no]
 269   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
 270   --enable-libtheora       enable Theora encoding via libtheora [no]
 271   --enable-libtls          enable LibreSSL (via libtls), needed for https support
 272                            if openssl, gnutls or mbedtls is not used [no]
 273   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 274   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 275   --enable-libvidstab      enable video stabilization using vid.stab [no]
 276   --enable-libvmaf         enable vmaf filter via libvmaf [no]
 277   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 278   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 279                            native implementation exists [no]
 280   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 281   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 282   --enable-libwebp         enable WebP encoding via libwebp [no]
 283   --enable-libx264         enable H.264 encoding via x264 [no]
 284   --enable-libx265         enable HEVC encoding via x265 [no]
 285   --enable-libxavs         enable AVS encoding via xavs [no]
 286   --enable-libxavs2        enable AVS2 encoding via xavs2 [no]
 287   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
 288   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
 289   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
 290   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
 291   --enable-libxvid         enable Xvid encoding via xvidcore,
 292                            native MPEG-4/Xvid encoder exists [no]
 293   --enable-libxml2         enable XML parsing using the C library libxml2, needed
 294                            for dash demuxing support [no]
 295   --enable-libzimg         enable z.lib, needed for zscale filter [no]
 296   --enable-libzmq          enable message passing via libzmq [no]
 297   --enable-libzvbi         enable teletext support via libzvbi [no]
 298   --enable-lv2             enable LV2 audio filtering [no]
 299   --disable-lzma           disable lzma [autodetect]
 300   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
 301   --enable-mbedtls         enable mbedTLS, needed for https support
 302                            if openssl, gnutls or libtls is not used [no]
 303   --enable-mediacodec      enable Android MediaCodec support [no]
 304   --enable-libmysofa       enable libmysofa, needed for sofalizer filter [no]
 305   --enable-openal          enable OpenAL 1.1 capture support [no]
 306   --enable-opencl          enable OpenCL processing [no]
 307   --enable-opengl          enable OpenGL rendering [no]
 308   --enable-openssl         enable openssl, needed for https support
 309                            if gnutls, libtls or mbedtls is not used [no]
 310   --enable-pocketsphinx    enable PocketSphinx, needed for asr filter [no]
 311   --disable-sndio          disable sndio support [autodetect]
 312   --disable-schannel       disable SChannel SSP, needed for TLS support on
 313                            Windows if openssl and gnutls are not used [autodetect]
 314   --disable-sdl2           disable sdl2 [autodetect]
 315   --disable-securetransport disable Secure Transport, needed for TLS support
 316                            on OSX if openssl and gnutls are not used [autodetect]
 317   --enable-vapoursynth     enable VapourSynth demuxer [no]
 318   --disable-xlib           disable xlib [autodetect]
 319   --disable-zlib           disable zlib [autodetect]
 320
 321   The following libraries provide various hardware acceleration features:
 322   --disable-amf            disable AMF video encoding code [autodetect]
 323   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
 324   --enable-cuda-nvcc       enable Nvidia CUDA compiler [no]
 325   --disable-cuvid          disable Nvidia CUVID support [autodetect]
 326   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
 327   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
 328   --disable-ffnvcodec      disable dynamically linked Nvidia code [autodetect]
 329   --enable-libdrm          enable DRM code (Linux) [no]
 330   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
 331   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
 332   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
 333   --disable-nvdec          disable Nvidia video decoding acceleration (via hwaccel) [autodetect]
 334   --disable-nvenc          disable Nvidia video encoding code [autodetect]
 335   --enable-omx             enable OpenMAX IL code [no]
 336   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
 337   --enable-rkmpp           enable Rockchip Media Process Platform code [no]
 338   --disable-v4l2-m2m       disable V4L2 mem2mem code [autodetect]
 339   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
 340   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
 341   --disable-videotoolbox   disable VideoToolbox code [autodetect]
 342
 343 Toolchain options:
 344   --arch=ARCH              select architecture [$arch]
 345   --cpu=CPU                select the minimum required CPU (affects
 346                            instruction selection, may crash on older CPUs)
 347   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 348   --progs-suffix=SUFFIX    program name suffix []
 349   --enable-cross-compile   assume a cross-compiler is used
 350   --sysroot=PATH           root of cross-build tree
 351   --sysinclude=PATH        location of cross-build system headers
 352   --target-os=OS           compiler targets OS [$target_os]
 353   --target-exec=CMD        command to run executables on target
 354   --target-path=DIR        path to view of build directory on target
 355   --target-samples=DIR     path to samples directory on target
 356   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 357   --toolchain=NAME         set tool defaults according to NAME
 358                            (gcc-asan, clang-asan, gcc-msan, clang-msan,
 359                            gcc-tsan, clang-tsan, gcc-usan, clang-usan,
 360                            valgrind-massif, valgrind-memcheck,
 361                            msvc, icl, gcov, llvm-cov, hardened)
 362   --nm=NM                  use nm tool NM [$nm_default]
 363   --ar=AR                  use archive tool AR [$ar_default]
 364   --as=AS                  use assembler AS [$as_default]
 365   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
 366   --strip=STRIP            use strip tool STRIP [$strip_default]
 367   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 368   --x86asmexe=EXE          use nasm-compatible assembler EXE [$x86asmexe_default]
 369   --cc=CC                  use C compiler CC [$cc_default]
 370   --cxx=CXX                use C compiler CXX [$cxx_default]
 371   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 372   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 373   --nvcc=NVCC              use Nvidia CUDA compiler NVCC [$nvcc_default]
 374   --ld=LD                  use linker LD [$ld_default]
 375   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 376   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 377   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 378   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 379   --host-cc=HOSTCC         use host C compiler HOSTCC
 380   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 381   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 382   --host-ld=HOSTLD         use host linker HOSTLD
 383   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 384   --host-extralibs=HLIBS   use libs HLIBS when linking for host
 385   --host-os=OS             compiler host OS [$target_os]
 386   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 387   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 388   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 389   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 390   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 391   --extra-ldsoflags=ELDFLAGS add ELDFLAGS to LDSOFLAGS [$LDSOFLAGS]
 392   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 393   --extra-version=STRING   version string suffix []
 394   --optflags=OPTFLAGS      override optimization-related compiler flags
 395   --nvccflags=NVCCFLAGS    override nvcc flags [$nvccflags_default]
 396   --build-suffix=SUFFIX    library name suffix []
 397   --enable-pic             build position-independent code
 398   --enable-thumb           compile for Thumb instruction set
 399   --enable-lto             use link-time optimization
 400   --env="ENV=override"     override the environment variables
 401
 402 Advanced options (experts only):
 403   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 404   --custom-allocator=NAME  use a supported custom allocator
 405   --disable-symver         disable symbol versioning
 406   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 407   --disable-safe-bitstream-reader
 408                            disable buffer boundary checking in bitreaders
 409                            (faster, but may crash)
 410   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 411
 412 Optimization options (experts only):
 413   --disable-asm            disable all assembly optimizations
 414   --disable-altivec        disable AltiVec optimizations
 415   --disable-vsx            disable VSX optimizations
 416   --disable-power8         disable POWER8 optimizations
 417   --disable-amd3dnow       disable 3DNow! optimizations
 418   --disable-amd3dnowext    disable 3DNow! extended optimizations
 419   --disable-mmx            disable MMX optimizations
 420   --disable-mmxext         disable MMXEXT optimizations
 421   --disable-sse            disable SSE optimizations
 422   --disable-sse2           disable SSE2 optimizations
 423   --disable-sse3           disable SSE3 optimizations
 424   --disable-ssse3          disable SSSE3 optimizations
 425   --disable-sse4           disable SSE4 optimizations
 426   --disable-sse42          disable SSE4.2 optimizations
 427   --disable-avx            disable AVX optimizations
 428   --disable-xop            disable XOP optimizations
 429   --disable-fma3           disable FMA3 optimizations
 430   --disable-fma4           disable FMA4 optimizations
 431   --disable-avx2           disable AVX2 optimizations
 432   --disable-avx512         disable AVX-512 optimizations
 433   --disable-aesni          disable AESNI optimizations
 434   --disable-armv5te        disable armv5te optimizations
 435   --disable-armv6          disable armv6 optimizations
 436   --disable-armv6t2        disable armv6t2 optimizations
 437   --disable-vfp            disable VFP optimizations
 438   --disable-neon           disable NEON optimizations
 439   --disable-inline-asm     disable use of inline assembly
 440   --disable-x86asm         disable use of standalone x86 assembly
 441   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
 442   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 443   --disable-msa            disable MSA optimizations
 444   --disable-mipsfpu        disable floating point MIPS optimizations
 445   --disable-mmi            disable Loongson SIMD optimizations
 446   --disable-fast-unaligned consider unaligned accesses slow
 447
 448 Developer options (useful when working on FFmpeg itself):
 449   --disable-debug          disable debugging symbols
 450   --enable-debug=LEVEL     set the debug level [$debuglevel]
 451   --disable-optimizations  disable compiler optimizations
 452   --enable-extra-warnings  enable more compiler warnings
 453   --disable-stripping      disable stripping of executables and shared libraries
 454   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 455                            2 causes a slowdown at runtime.
 456   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 457   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 458                            leaks and errors, using the specified valgrind binary.
 459                            Cannot be combined with --target-exec
 460   --enable-ftrapv          Trap arithmetic overflows
 461   --samples=PATH           location of test samples for FATE, if not set use
 462                            \$FATE_SAMPLES at make invocation time.
 463   --enable-neon-clobber-test check NEON registers for clobbering (should be
 464                            used only for debugging purposes)
 465   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 466                            should be used only for debugging purposes)
 467   --enable-random          randomly enable/disable components
 468   --disable-random
 469   --enable-random=LIST     randomly enable/disable specific components or
 470   --disable-random=LIST    component groups. LIST is a comma-separated list
 471                            of NAME[:PROB] entries where NAME is a component
 472                            (group) and PROB the probability associated with
 473                            NAME (default 0.5).
 474   --random-seed=VALUE      seed value for --enable/disable-random
 475   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 476                            (only applies to --disable-optimizations builds)
 477   --enable-ossfuzz         Enable building fuzzer tool
 478   --libfuzzer=PATH         path to libfuzzer
 479   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
 480                            in the name) of tests whose result is ignored
 481   --enable-linux-perf      enable Linux Performance Monitor API
 482
 483 NOTE: Object files are built at the place where configure is launched.
 484 EOF
 485   exit 0
 486 }
 487
 488 if test -t 1 && which tput >/dev/null 2>&1; then
 489     ncolors=$(tput colors)
 490     if test -n "$ncolors" && test $ncolors -ge 8; then
 491         bold_color=$(tput bold)
 492         warn_color=$(tput setaf 3)
 493         error_color=$(tput setaf 1)
 494         reset_color=$(tput sgr0)
 495     fi
 496     # 72 used instead of 80 since that's the default of pr
 497     ncols=$(tput cols)
 498 fi
 499 : ${ncols:=72}
 500
 501 log(){
 502     echo "$@" >> $logfile
 503 }
 504
 505 log_file(){
 506     log BEGIN "$1"
 507     log_file_i=1
 508     while IFS= read -r log_file_line; do
 509         printf '%5d\t%s\n' "$log_file_i" "$log_file_line"
 510         log_file_i=$(($log_file_i+1))
 511     done < "$1" >> "$logfile"
 512     log END "$1"
 513 }
 514
 515 warn(){
 516     log "WARNING: $*"
 517     WARNINGS="${WARNINGS}WARNING: $*\n"
 518 }
 519
 520 die(){
 521     log "$@"
 522     echo "$error_color$bold_color$@$reset_color"
 523     cat <<EOF
 524
 525 If you think configure made a mistake, make sure you are using the latest
 526 version from Git.  If the latest version fails, report the problem to the
 527 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 528 EOF
 529     if disabled logging; then
 530         cat <<EOF
 531 Rerun configure with logging enabled (do not use --disable-logging), and
 532 include the log this produces with your report.
 533 EOF
 534     else
 535         cat <<EOF
 536 Include the log file "$logfile" produced by configure as this will help
 537 solve the problem.
 538 EOF
 539     fi
 540     exit 1
 541 }
 542
 543 # Avoid locale weirdness, besides we really just want to translate ASCII.
 544 toupper(){
 545     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 546 }
 547
 548 tolower(){
 549     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 550 }
 551
 552 c_escape(){
 553     echo "$*" | sed 's/["\\]/\\\0/g'
 554 }
 555
 556 sh_quote(){
 557     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 558     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 559     echo "$v"
 560 }
 561
 562 cleanws(){
 563     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 564 }
 565
 566 filter(){
 567     pat=$1
 568     shift
 569     for v; do
 570         eval "case '$v' in $pat) printf '%s ' '$v' ;; esac"
 571     done
 572 }
 573
 574 filter_out(){
 575     pat=$1
 576     shift
 577     for v; do
 578         eval "case '$v' in $pat) ;; *) printf '%s ' '$v' ;; esac"
 579     done
 580 }
 581
 582 map(){
 583     m=$1
 584     shift
 585     for v; do eval $m; done
 586 }
 587
 588 add_suffix(){
 589     suffix=$1
 590     shift
 591     for v; do echo ${v}${suffix}; done
 592 }
 593
 594 remove_suffix(){
 595     suffix=$1
 596     shift
 597     for v; do echo ${v%$suffix}; done
 598 }
 599
 600 set_all(){
 601     value=$1
 602     shift
 603     for var in $*; do
 604         eval $var=$value
 605     done
 606 }
 607
 608 set_weak(){
 609     value=$1
 610     shift
 611     for var; do
 612         eval : \${$var:=$value}
 613     done
 614 }
 615
 616 sanitize_var_name(){
 617     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 618 }
 619
 620 set_sanitized(){
 621     var=$1
 622     shift
 623     eval $(sanitize_var_name "$var")='$*'
 624 }
 625
 626 get_sanitized(){
 627     eval echo \$$(sanitize_var_name "$1")
 628 }
 629
 630 pushvar(){
 631     for pvar in $*; do
 632         eval level=\${${pvar}_level:=0}
 633         eval ${pvar}_${level}="\$$pvar"
 634         eval ${pvar}_level=$(($level+1))
 635     done
 636 }
 637
 638 popvar(){
 639     for pvar in $*; do
 640         eval level=\${${pvar}_level:-0}
 641         test $level = 0 && continue
 642         eval level=$(($level-1))
 643         eval $pvar="\${${pvar}_${level}}"
 644         eval ${pvar}_level=$level
 645         eval unset ${pvar}_${level}
 646     done
 647 }
 648
 649 request(){
 650     for var in $*; do
 651         eval ${var}_requested=yes
 652         eval $var=
 653     done
 654 }
 655
 656 warn_if_gets_disabled(){
 657     for var in $*; do
 658         WARN_IF_GETS_DISABLED_LIST="$WARN_IF_GETS_DISABLED_LIST $var"
 659     done
 660 }
 661
 662 enable(){
 663     set_all yes $*
 664 }
 665
 666 disable(){
 667     set_all no $*
 668 }
 669
 670 disable_with_reason(){
 671     disable $1
 672     eval "${1}_disable_reason=\"$2\""
 673     if requested $1; then
 674         die "ERROR: $1 requested, but $2"
 675     fi
 676 }
 677
 678 enable_weak(){
 679     set_weak yes $*
 680 }
 681
 682 disable_weak(){
 683     set_weak no $*
 684 }
 685
 686 enable_sanitized(){
 687     for var; do
 688         enable $(sanitize_var_name $var)
 689     done
 690 }
 691
 692 disable_sanitized(){
 693     for var; do
 694         disable $(sanitize_var_name $var)
 695     done
 696 }
 697
 698 do_enable_deep(){
 699     for var; do
 700         enabled $var && continue
 701         set -- $var
 702         eval enable_deep \$${var}_select
 703         var=$1
 704         eval enable_deep_weak \$${var}_suggest
 705     done
 706 }
 707
 708 enable_deep(){
 709     do_enable_deep $*
 710     enable $*
 711 }
 712
 713 enable_deep_weak(){
 714     for var; do
 715         disabled $var && continue
 716         set -- $var
 717         do_enable_deep $var
 718         var=$1
 719         enable_weak $var
 720     done
 721 }
 722
 723 requested(){
 724     test "${1#!}" = "$1" && op="=" || op="!="
 725     eval test "x\$${1#!}_requested" $op "xyes"
 726 }
 727
 728 enabled(){
 729     test "${1#!}" = "$1" && op="=" || op="!="
 730     eval test "x\$${1#!}" $op "xyes"
 731 }
 732
 733 disabled(){
 734     test "${1#!}" = "$1" && op="=" || op="!="
 735     eval test "x\$${1#!}" $op "xno"
 736 }
 737
 738 enabled_all(){
 739     for opt; do
 740         enabled $opt || return 1
 741     done
 742 }
 743
 744 disabled_all(){
 745     for opt; do
 746         disabled $opt || return 1
 747     done
 748 }
 749
 750 enabled_any(){
 751     for opt; do
 752         enabled $opt && return 0
 753     done
 754 }
 755
 756 disabled_any(){
 757     for opt; do
 758         disabled $opt && return 0
 759     done
 760     return 1
 761 }
 762
 763 set_default(){
 764     for opt; do
 765         eval : \${$opt:=\$${opt}_default}
 766     done
 767 }
 768
 769 is_in(){
 770     value=$1
 771     shift
 772     for var in $*; do
 773         [ $var = $value ] && return 0
 774     done
 775     return 1
 776 }
 777
 778 # The cfg loop is very hot (several thousands iterations), and in bash also
 779 # potentialy quite slow. Try to abort the iterations early, preferably without
 780 # calling functions. 70%+ of the time cfg is already done or without deps.
 781 check_deps(){
 782     for cfg; do
 783         eval [ x\$${cfg}_checking = xdone ] && continue
 784         eval [ x\$${cfg}_checking = xinprogress ] && die "Circular dependency for $cfg."
 785
 786         eval "
 787         dep_all=\$${cfg}_deps
 788         dep_any=\$${cfg}_deps_any
 789         dep_con=\$${cfg}_conflict
 790         dep_sel=\$${cfg}_select
 791         dep_sgs=\$${cfg}_suggest
 792         dep_ifa=\$${cfg}_if
 793         dep_ifn=\$${cfg}_if_any
 794         "
 795
 796         # most of the time here $cfg has no deps - avoid costly no-op work
 797         if [ "$dep_all$dep_any$dep_con$dep_sel$dep_sgs$dep_ifa$dep_ifn" ]; then
 798             eval ${cfg}_checking=inprogress
 799
 800             set -- $cfg "$dep_all" "$dep_any" "$dep_con" "$dep_sel" "$dep_sgs" "$dep_ifa" "$dep_ifn"
 801             check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
 802             cfg=$1; dep_all=$2; dep_any=$3; dep_con=$4; dep_sel=$5 dep_sgs=$6; dep_ifa=$7; dep_ifn=$8
 803
 804             [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 805             [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 806             enabled_all  $dep_all || { disable_with_reason $cfg "not all dependencies are satisfied: $dep_all"; }
 807             enabled_any  $dep_any || { disable_with_reason $cfg "not any dependency is satisfied: $dep_any"; }
 808             disabled_all $dep_con || { disable_with_reason $cfg "some conflicting dependencies are unsatisfied: $dep_con"; }
 809             disabled_any $dep_sel && { disable_with_reason $cfg "some selected dependency is unsatisfied: $dep_sel"; }
 810
 811             enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
 812
 813             for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
 814                 # filter out library deps, these do not belong in extralibs
 815                 is_in $dep $LIBRARY_LIST && continue
 816                 enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
 817             done
 818         fi
 819
 820         eval ${cfg}_checking=done
 821     done
 822 }
 823
 824 print_config(){
 825     pfx=$1
 826     files=$2
 827     shift 2
 828     map 'eval echo "$v \${$v:-no}"' "$@" |
 829     awk "BEGIN { split(\"$files\", files) }
 830         {
 831             c = \"$pfx\" toupper(\$1);
 832             v = \$2;
 833             sub(/yes/, 1, v);
 834             sub(/no/,  0, v);
 835             for (f in files) {
 836                 file = files[f];
 837                 if (file ~ /\\.h\$/) {
 838                     printf(\"#define %s %d\\n\", c, v) >>file;
 839                 } else if (file ~ /\\.asm\$/) {
 840                     printf(\"%%define %s %d\\n\", c, v) >>file;
 841                 } else if (file ~ /\\.mak\$/) {
 842                     n = -v ? \"\" : \"!\";
 843                     printf(\"%s%s=yes\\n\", n, c) >>file;
 844                 } else if (file ~ /\\.texi\$/) {
 845                     pre = -v ? \"\" : \"@c \";
 846                     yesno = \$2;
 847                     c2 = tolower(c);
 848                     gsub(/_/, \"-\", c2);
 849                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 850                 }
 851             }
 852         }"
 853 }
 854
 855 print_enabled(){
 856     suf=$1
 857     shift
 858     for v; do
 859         enabled $v && printf "%s\n" ${v%$suf}
 860     done
 861 }
 862
 863 append(){
 864     var=$1
 865     shift
 866     eval "$var=\"\$$var $*\""
 867 }
 868
 869 prepend(){
 870     var=$1
 871     shift
 872     eval "$var=\"$* \$$var\""
 873 }
 874
 875 reverse () {
 876     eval '
 877         reverse_out=
 878         for v in $'$1'; do
 879             reverse_out="$v $reverse_out"
 880         done
 881         '$1'=$reverse_out
 882     '
 883 }
 884
 885 # keeps the last occurence of each non-unique item
 886 unique(){
 887     unique_out=
 888     eval unique_in=\$$1
 889     reverse unique_in
 890     for v in $unique_in; do
 891         # " $unique_out" +space such that every item is surrounded with spaces
 892         case " $unique_out" in *" $v "*) continue; esac  # already in list
 893         unique_out="$unique_out$v "
 894     done
 895     reverse unique_out
 896     eval $1=\$unique_out
 897 }
 898
 899 resolve(){
 900     resolve_out=
 901     eval resolve_in=\$$1
 902     for v in $resolve_in; do
 903         eval 'resolve_out="$resolve_out$'$v' "'
 904     done
 905     eval $1=\$resolve_out
 906 }
 907
 908 add_cppflags(){
 909     append CPPFLAGS "$@"
 910 }
 911
 912 add_cflags(){
 913     append CFLAGS $($cflags_filter "$@")
 914 }
 915
 916 add_cflags_headers(){
 917     append CFLAGS_HEADERS $($cflags_filter "$@")
 918 }
 919
 920 add_cxxflags(){
 921     append CXXFLAGS $($cflags_filter "$@")
 922 }
 923
 924 add_objcflags(){
 925     append OBJCFLAGS $($objcflags_filter "$@")
 926 }
 927
 928 add_asflags(){
 929     append ASFLAGS $($asflags_filter "$@")
 930 }
 931
 932 add_ldflags(){
 933     append LDFLAGS $($ldflags_filter "$@")
 934 }
 935
 936 add_ldexeflags(){
 937     append LDEXEFLAGS $($ldflags_filter "$@")
 938 }
 939
 940 add_ldsoflags(){
 941     append LDSOFLAGS $($ldflags_filter "$@")
 942 }
 943
 944 add_extralibs(){
 945     prepend extralibs $($ldflags_filter "$@")
 946 }
 947
 948 add_stripflags(){
 949     append ASMSTRIPFLAGS "$@"
 950 }
 951
 952 add_host_cppflags(){
 953     append host_cppflags "$@"
 954 }
 955
 956 add_host_cflags(){
 957     append host_cflags $($host_cflags_filter "$@")
 958 }
 959
 960 add_host_ldflags(){
 961     append host_ldflags $($host_ldflags_filter "$@")
 962 }
 963
 964 add_compat(){
 965     append compat_objs $1
 966     shift
 967     map 'add_cppflags -D$v' "$@"
 968 }
 969
 970 test_cmd(){
 971     log "$@"
 972     "$@" >> $logfile 2>&1
 973 }
 974
 975 test_stat(){
 976     log test_stat "$@"
 977     stat "$1" >> $logfile 2>&1
 978 }
 979
 980 cc_e(){
 981     eval printf '%s\\n' $CC_E
 982 }
 983
 984 cc_o(){
 985     eval printf '%s\\n' $CC_O
 986 }
 987
 988 as_o(){
 989     eval printf '%s\\n' $AS_O
 990 }
 991
 992 x86asm_o(){
 993     eval printf '%s\\n' $X86ASM_O
 994 }
 995
 996 ld_o(){
 997     eval printf '%s\\n' $LD_O
 998 }
 999
1000 hostcc_e(){
1001     eval printf '%s\\n' $HOSTCC_E
1002 }
1003
1004 hostcc_o(){
1005     eval printf '%s\\n' $HOSTCC_O
1006 }
1007
1008 nvcc_o(){
1009     eval printf '%s\\n' $NVCC_O
1010 }
1011
1012 test_cc(){
1013     log test_cc "$@"
1014     cat > $TMPC
1015     log_file $TMPC
1016     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
1017 }
1018
1019 test_cxx(){
1020     log test_cxx "$@"
1021     cat > $TMPCPP
1022     log_file $TMPCPP
1023     test_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
1024 }
1025
1026 test_objcc(){
1027     log test_objcc "$@"
1028     cat > $TMPM
1029     log_file $TMPM
1030     test_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
1031 }
1032
1033 test_nvcc(){
1034     log test_nvcc "$@"
1035     cat > $TMPCU
1036     log_file $TMPCU
1037     tmpcu_=$TMPCU
1038     tmpo_=$TMPO
1039     [ -x "$(command -v cygpath)" ] && tmpcu_=$(cygpath -m $tmpcu_) && tmpo_=$(cygpath -m $tmpo_)
1040     test_cmd $nvcc -ptx $NVCCFLAGS "$@" $NVCC_C $(nvcc_o $tmpo_) $tmpcu_
1041 }
1042
1043 check_nvcc() {
1044     log check_nvcc "$@"
1045     test_nvcc <<EOF
1046 extern "C" {
1047     __global__ void hello(unsigned char *data) {}
1048 }
1049 EOF
1050 }
1051
1052 test_cpp(){
1053     log test_cpp "$@"
1054     cat > $TMPC
1055     log_file $TMPC
1056     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
1057 }
1058
1059 test_as(){
1060     log test_as "$@"
1061     cat > $TMPS
1062     log_file $TMPS
1063     test_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
1064 }
1065
1066 test_x86asm(){
1067     log test_x86asm "$@"
1068     echo "$1" > $TMPASM
1069     log_file $TMPASM
1070     shift
1071     test_cmd $x86asmexe $X86ASMFLAGS -Werror "$@" $(x86asm_o $TMPO) $TMPASM
1072 }
1073
1074 check_cmd(){
1075     log check_cmd "$@"
1076     cmd=$1
1077     disabled $cmd && return
1078     disable $cmd
1079     test_cmd $@ && enable $cmd
1080 }
1081
1082 check_as(){
1083     log check_as "$@"
1084     name=$1
1085     code=$2
1086     shift 2
1087     disable $name
1088     test_as $@ <<EOF && enable $name
1089 $code
1090 EOF
1091 }
1092
1093 check_inline_asm(){
1094     log check_inline_asm "$@"
1095     name="$1"
1096     code="$2"
1097     shift 2
1098     disable $name
1099     test_cc "$@" <<EOF && enable $name
1100 void foo(void){ __asm__ volatile($code); }
1101 EOF
1102 }
1103
1104 check_inline_asm_flags(){
1105     log check_inline_asm_flags "$@"
1106     name="$1"
1107     code="$2"
1108     flags=''
1109     shift 2
1110     while [ "$1" != "" ]; do
1111       append flags $1
1112       shift
1113     done;
1114     disable $name
1115     cat > $TMPC <<EOF
1116 void foo(void){ __asm__ volatile($code); }
1117 EOF
1118     log_file $TMPC
1119     test_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
1120     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
1121 }
1122
1123 check_insn(){
1124     log check_insn "$@"
1125     check_inline_asm ${1}_inline "\"$2\""
1126     check_as ${1}_external "$2"
1127 }
1128
1129 check_x86asm(){
1130     log check_x86asm "$@"
1131     name=$1
1132     shift
1133     disable $name
1134     test_x86asm "$@" && enable $name
1135 }
1136
1137 test_ld(){
1138     log test_ld "$@"
1139     type=$1
1140     shift 1
1141     flags=$(filter_out '-l*|*.so' $@)
1142     libs=$(filter '-l*|*.so' $@)
1143     test_$type $($cflags_filter $flags) || return
1144     flags=$($ldflags_filter $flags)
1145     libs=$($ldflags_filter $libs)
1146     test_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1147 }
1148
1149 check_ld(){
1150     log check_ld "$@"
1151     type=$1
1152     name=$2
1153     shift 2
1154     disable $name
1155     test_ld $type $@ && enable $name
1156 }
1157
1158 print_include(){
1159     hdr=$1
1160     test "${hdr%.h}" = "${hdr}" &&
1161         echo "#include $hdr"    ||
1162         echo "#include <$hdr>"
1163 }
1164
1165 test_code(){
1166     log test_code "$@"
1167     check=$1
1168     headers=$2
1169     code=$3
1170     shift 3
1171     {
1172         for hdr in $headers; do
1173             print_include $hdr
1174         done
1175         echo "int main(void) { $code; return 0; }"
1176     } | test_$check "$@"
1177 }
1178
1179 check_cppflags(){
1180     log check_cppflags "$@"
1181     test_cpp "$@" <<EOF && append CPPFLAGS "$@"
1182 #include <stdlib.h>
1183 EOF
1184 }
1185
1186 test_cflags(){
1187     log test_cflags "$@"
1188     set -- $($cflags_filter "$@")
1189     test_cc "$@" <<EOF
1190 int x;
1191 EOF
1192 }
1193
1194 check_cflags(){
1195     log check_cflags "$@"
1196     test_cflags "$@" && add_cflags "$@"
1197 }
1198
1199 check_cxxflags(){
1200     log check_cxxflags "$@"
1201     set -- $($cflags_filter "$@")
1202     test_cxx "$@" <<EOF && append CXXFLAGS "$@"
1203 int x;
1204 EOF
1205 }
1206
1207 test_objcflags(){
1208     log test_objcflags "$@"
1209     set -- $($objcflags_filter "$@")
1210     test_objcc "$@" <<EOF
1211 int x;
1212 EOF
1213 }
1214
1215 check_objcflags(){
1216     log check_objcflags "$@"
1217     test_objcflags "$@" && add_objcflags "$@"
1218 }
1219
1220 test_ldflags(){
1221     log test_ldflags "$@"
1222     set -- $($ldflags_filter "$@")
1223     test_ld "cc" "$@" <<EOF
1224 int main(void){ return 0; }
1225 EOF
1226 }
1227
1228 check_ldflags(){
1229     log check_ldflags "$@"
1230     test_ldflags "$@" && add_ldflags "$@"
1231 }
1232
1233 test_stripflags(){
1234     log test_stripflags "$@"
1235     # call test_cc to get a fresh TMPO
1236     test_cc <<EOF
1237 int main(void) { return 0; }
1238 EOF
1239     test_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1240 }
1241
1242 check_stripflags(){
1243     log check_stripflags "$@"
1244     test_stripflags "$@" && add_stripflags "$@"
1245 }
1246
1247 check_headers(){
1248     log check_headers "$@"
1249     headers=$1
1250     shift
1251     disable_sanitized $headers
1252     {
1253         for hdr in $headers; do
1254             print_include $hdr
1255         done
1256         echo "int x;"
1257     } | test_cpp "$@" && enable_sanitized $headers
1258 }
1259
1260 check_header_objcc(){
1261     log check_header_objcc "$@"
1262     rm -f -- "$TMPO"
1263     header=$1
1264     shift
1265     disable_sanitized $header
1266     {
1267        echo "#include <$header>"
1268        echo "int main(void) { return 0; }"
1269     } | test_objcc && test_stat "$TMPO" && enable_sanitized $header
1270 }
1271
1272 check_apple_framework(){
1273     log check_apple_framework "$@"
1274     framework="$1"
1275     name="$(tolower $framework)"
1276     header="${framework}/${framework}.h"
1277     disable $name
1278     check_header_objcc $header &&
1279         enable $name && eval ${name}_extralibs='"-framework $framework"'
1280 }
1281
1282 check_func(){
1283     log check_func "$@"
1284     func=$1
1285     shift
1286     disable $func
1287     test_ld "cc" "$@" <<EOF && enable $func
1288 extern int $func();
1289 int main(void){ $func(); }
1290 EOF
1291 }
1292
1293 check_complexfunc(){
1294     log check_complexfunc "$@"
1295     func=$1
1296     narg=$2
1297     shift 2
1298     test $narg = 2 && args="f, g" || args="f * I"
1299     disable $func
1300     test_ld "cc" "$@" <<EOF && enable $func
1301 #include <complex.h>
1302 #include <math.h>
1303 float foo(complex float f, complex float g) { return $func($args); }
1304 int main(void){ return (int) foo; }
1305 EOF
1306 }
1307
1308 check_mathfunc(){
1309     log check_mathfunc "$@"
1310     func=$1
1311     narg=$2
1312     shift 2
1313     test $narg = 2 && args="f, g" || args="f"
1314     disable $func
1315     test_ld "cc" "$@" <<EOF && enable $func
1316 #include <math.h>
1317 float foo(float f, float g) { return $func($args); }
1318 int main(void){ return (int) foo; }
1319 EOF
1320 }
1321
1322 check_func_headers(){
1323     log check_func_headers "$@"
1324     headers=$1
1325     funcs=$2
1326     shift 2
1327     {
1328         for hdr in $headers; do
1329             print_include $hdr
1330         done
1331         echo "#include <stdint.h>"
1332         for func in $funcs; do
1333             echo "long check_$func(void) { return (long) $func; }"
1334         done
1335         echo "int main(void) { int ret = 0;"
1336         # LTO could optimize out the test functions without this
1337         for func in $funcs; do
1338             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1339         done
1340         echo "return ret; }"
1341     } | test_ld "cc" "$@" && enable $funcs && enable_sanitized $headers
1342 }
1343
1344 check_class_headers_cpp(){
1345     log check_class_headers_cpp "$@"
1346     headers=$1
1347     classes=$2
1348     shift 2
1349     {
1350         for hdr in $headers; do
1351             echo "#include <$hdr>"
1352         done
1353         echo "int main(void) { "
1354         i=1
1355         for class in $classes; do
1356             echo "$class obj$i;"
1357             i=$(expr $i + 1)
1358         done
1359         echo "return 0; }"
1360     } | test_ld "cxx" "$@" && enable $funcs && enable_sanitized $headers
1361 }
1362
1363 test_cpp_condition(){
1364     log test_cpp_condition "$@"
1365     header=$1
1366     condition=$2
1367     shift 2
1368     test_cpp "$@" <<EOF
1369 #include <$header>
1370 #if !($condition)
1371 #error "unsatisfied condition: $condition"
1372 #endif
1373 EOF
1374 }
1375
1376 check_cpp_condition(){
1377     log check_cpp_condition "$@"
1378     name=$1
1379     shift 1
1380     disable $name
1381     test_cpp_condition "$@" && enable $name
1382 }
1383
1384 test_cflags_cc(){
1385     log test_cflags_cc "$@"
1386     flags=$1
1387     header=$2
1388     condition=$3
1389     shift 3
1390     set -- $($cflags_filter "$flags")
1391     test_cc "$@" <<EOF
1392 #include <$header>
1393 #if !($condition)
1394 #error "unsatisfied condition: $condition"
1395 #endif
1396 EOF
1397 }
1398
1399 check_lib(){
1400     log check_lib "$@"
1401     name="$1"
1402     headers="$2"
1403     funcs="$3"
1404     shift 3
1405     disable $name
1406     check_func_headers "$headers" "$funcs" "$@" &&
1407         enable $name && eval ${name}_extralibs="\$@"
1408 }
1409
1410 check_lib_cpp(){
1411     log check_lib_cpp "$@"
1412     name="$1"
1413     headers="$2"
1414     classes="$3"
1415     shift 3
1416     disable $name
1417     check_class_headers_cpp "$headers" "$classes" "$@" &&
1418         enable $name && eval ${name}_extralibs="\$@"
1419 }
1420
1421 test_pkg_config(){
1422     log test_pkg_config "$@"
1423     name="$1"
1424     pkg_version="$2"
1425     pkg="${2%% *}"
1426     headers="$3"
1427     funcs="$4"
1428     shift 4
1429     disable $name
1430     test_cmd $pkg_config --exists --print-errors $pkg_version || return
1431     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1432     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1433     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1434         enable $name &&
1435         set_sanitized "${name}_cflags"    $pkg_cflags &&
1436         set_sanitized "${name}_extralibs" $pkg_libs
1437 }
1438
1439 check_pkg_config(){
1440     log check_pkg_config "$@"
1441     name="$1"
1442     test_pkg_config "$@" &&
1443         eval add_cflags \$${name}_cflags
1444 }
1445
1446 test_exec(){
1447     test_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1448 }
1449
1450 check_exec_crash(){
1451     log check_exec_crash "$@"
1452     code=$(cat)
1453
1454     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1455     # are safe but may not be available everywhere.  Thus we use
1456     # raise(SIGTERM) instead.  The check is run in a subshell so we
1457     # can redirect the "Terminated" message from the shell.  SIGBUS
1458     # is not defined by standard C so it is used conditionally.
1459
1460     (test_exec "$@") >> $logfile 2>&1 <<EOF
1461 #include <signal.h>
1462 static void sighandler(int sig){
1463     raise(SIGTERM);
1464 }
1465 int foo(void){
1466     $code
1467 }
1468 int (*func_ptr)(void) = foo;
1469 int main(void){
1470     signal(SIGILL, sighandler);
1471     signal(SIGFPE, sighandler);
1472     signal(SIGSEGV, sighandler);
1473 #ifdef SIGBUS
1474     signal(SIGBUS, sighandler);
1475 #endif
1476     return func_ptr();
1477 }
1478 EOF
1479 }
1480
1481 check_type(){
1482     log check_type "$@"
1483     headers=$1
1484     type=$2
1485     shift 2
1486     disable_sanitized "$type"
1487     test_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1488 }
1489
1490 check_struct(){
1491     log check_struct "$@"
1492     headers=$1
1493     struct=$2
1494     member=$3
1495     shift 3
1496     disable_sanitized "${struct}_${member}"
1497     test_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1498         enable_sanitized "${struct}_${member}"
1499 }
1500
1501 check_builtin(){
1502     log check_builtin "$@"
1503     name=$1
1504     headers=$2
1505     builtin=$3
1506     shift 3
1507     disable "$name"
1508     test_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1509 }
1510
1511 check_compile_assert(){
1512     log check_compile_assert "$@"
1513     name=$1
1514     headers=$2
1515     condition=$3
1516     shift 3
1517     disable "$name"
1518     test_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1519 }
1520
1521 check_cc(){
1522     log check_cc "$@"
1523     name=$1
1524     shift
1525     disable "$name"
1526     test_code cc "$@" && enable "$name"
1527 }
1528
1529 require(){
1530     log require "$@"
1531     name_version="$1"
1532     name="${1%% *}"
1533     shift
1534     check_lib $name "$@" || die "ERROR: $name_version not found"
1535 }
1536
1537 require_cc(){
1538     log require_cc "$@"
1539     name="$1"
1540     check_cc "$@" || die "ERROR: $name failed"
1541 }
1542
1543 require_cpp(){
1544     name="$1"
1545     headers="$2"
1546     classes="$3"
1547     shift 3
1548     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1549 }
1550
1551 require_headers(){
1552     log require_headers "$@"
1553     headers="$1"
1554     check_headers "$@" || die "ERROR: $headers not found"
1555 }
1556
1557 require_cpp_condition(){
1558     log require_cpp_condition "$@"
1559     condition="$3"
1560     check_cpp_condition "$@" || die "ERROR: $condition not satisfied"
1561 }
1562
1563 require_pkg_config(){
1564     log require_pkg_config "$@"
1565     pkg_version="$2"
1566     check_pkg_config "$@" || die "ERROR: $pkg_version not found using pkg-config$pkg_config_fail_message"
1567 }
1568
1569 test_host_cc(){
1570     log test_host_cc "$@"
1571     cat > $TMPC
1572     log_file $TMPC
1573     test_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1574 }
1575
1576 test_host_cpp(){
1577     log test_host_cpp "$@"
1578     cat > $TMPC
1579     log_file $TMPC
1580     test_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1581 }
1582
1583 check_host_cppflags(){
1584     log check_host_cppflags "$@"
1585     test_host_cpp "$@" <<EOF && append host_cppflags "$@"
1586 #include <stdlib.h>
1587 EOF
1588 }
1589
1590 check_host_cflags(){
1591     log check_host_cflags "$@"
1592     set -- $($host_cflags_filter "$@")
1593     test_host_cc "$@" <<EOF && append host_cflags "$@"
1594 int x;
1595 EOF
1596 }
1597
1598 test_host_cpp_condition(){
1599     log test_host_cpp_condition "$@"
1600     header=$1
1601     condition=$2
1602     shift 2
1603     test_host_cpp "$@" <<EOF
1604 #include <$header>
1605 #if !($condition)
1606 #error "unsatisfied condition: $condition"
1607 #endif
1608 EOF
1609 }
1610
1611 check_host_cpp_condition(){
1612     log check_host_cpp_condition "$@"
1613     name=$1
1614     shift 1
1615     disable $name
1616     test_host_cpp_condition "$@" && enable $name
1617 }
1618
1619 cp_if_changed(){
1620     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1621     mkdir -p "$(dirname $2)"
1622     cp -f "$1" "$2"
1623 }
1624
1625 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1626 # system-dependent things.
1627
1628 AVCODEC_COMPONENTS="
1629     bsfs
1630     decoders
1631     encoders
1632     hwaccels
1633     parsers
1634 "
1635
1636 AVDEVICE_COMPONENTS="
1637     indevs
1638     outdevs
1639 "
1640
1641 AVFILTER_COMPONENTS="
1642     filters
1643 "
1644
1645 AVFORMAT_COMPONENTS="
1646     demuxers
1647     muxers
1648     protocols
1649 "
1650
1651 COMPONENT_LIST="
1652     $AVCODEC_COMPONENTS
1653     $AVDEVICE_COMPONENTS
1654     $AVFILTER_COMPONENTS
1655     $AVFORMAT_COMPONENTS
1656 "
1657
1658 EXAMPLE_LIST="
1659     avio_dir_cmd_example
1660     avio_reading_example
1661     decode_audio_example
1662     decode_video_example
1663     demuxing_decoding_example
1664     encode_audio_example
1665     encode_video_example
1666     extract_mvs_example
1667     filter_audio_example
1668     filtering_audio_example
1669     filtering_video_example
1670     http_multiclient_example
1671     hw_decode_example
1672     metadata_example
1673     muxing_example
1674     qsvdec_example
1675     remuxing_example
1676     resampling_audio_example
1677     scaling_video_example
1678     transcode_aac_example
1679     transcoding_example
1680     vaapi_encode_example
1681     vaapi_transcode_example
1682 "
1683
1684 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1685     alsa
1686     appkit
1687     avfoundation
1688     bzlib
1689     coreimage
1690     iconv
1691     libxcb
1692     libxcb_shm
1693     libxcb_shape
1694     libxcb_xfixes
1695     lzma
1696     schannel
1697     sdl2
1698     securetransport
1699     sndio
1700     xlib
1701     zlib
1702 "
1703
1704 EXTERNAL_LIBRARY_GPL_LIST="
1705     avisynth
1706     frei0r
1707     libcdio
1708     libdavs2
1709     librubberband
1710     libvidstab
1711     libx264
1712     libx265
1713     libxavs
1714     libxavs2
1715     libxvid
1716 "
1717
1718 EXTERNAL_LIBRARY_NONFREE_LIST="
1719     decklink
1720     libfdk_aac
1721     openssl
1722     libtls
1723 "
1724
1725 EXTERNAL_LIBRARY_VERSION3_LIST="
1726     gmp
1727     libaribb24
1728     liblensfun
1729     libopencore_amrnb
1730     libopencore_amrwb
1731     libvmaf
1732     libvo_amrwbenc
1733     mbedtls
1734     rkmpp
1735 "
1736
1737 EXTERNAL_LIBRARY_GPLV3_LIST="
1738     libsmbclient
1739 "
1740
1741 EXTERNAL_LIBRARY_LIST="
1742     $EXTERNAL_LIBRARY_GPL_LIST
1743     $EXTERNAL_LIBRARY_NONFREE_LIST
1744     $EXTERNAL_LIBRARY_VERSION3_LIST
1745     $EXTERNAL_LIBRARY_GPLV3_LIST
1746     chromaprint
1747     gcrypt
1748     gnutls
1749     jni
1750     ladspa
1751     libaom
1752     libass
1753     libbluray
1754     libbs2b
1755     libcaca
1756     libcelt
1757     libcodec2
1758     libdav1d
1759     libdc1394
1760     libdrm
1761     libflite
1762     libfontconfig
1763     libfreetype
1764     libfribidi
1765     libgme
1766     libgsm
1767     libiec61883
1768     libilbc
1769     libjack
1770     libklvanc
1771     libkvazaar
1772     libmodplug
1773     libmp3lame
1774     libmysofa
1775     libopencv
1776     libopenh264
1777     libopenjpeg
1778     libopenmpt
1779     libopus
1780     libpulse
1781     librsvg
1782     librtmp
1783     libshine
1784     libsmbclient
1785     libsnappy
1786     libsoxr
1787     libspeex
1788     libsrt
1789     libssh
1790     libtensorflow
1791     libtesseract
1792     libtheora
1793     libtwolame
1794     libv4l2
1795     libvorbis
1796     libvpx
1797     libwavpack
1798     libwebp
1799     libxml2
1800     libzimg
1801     libzmq
1802     libzvbi
1803     lv2
1804     mediacodec
1805     openal
1806     opengl
1807     pocketsphinx
1808     vapoursynth
1809 "
1810
1811 HWACCEL_AUTODETECT_LIBRARY_LIST="
1812     amf
1813     audiotoolbox
1814     crystalhd
1815     cuda
1816     cuvid
1817     d3d11va
1818     dxva2
1819     ffnvcodec
1820     nvdec
1821     nvenc
1822     vaapi
1823     vdpau
1824     videotoolbox
1825     v4l2_m2m
1826     xvmc
1827 "
1828
1829 # catchall list of things that require external libs to link
1830 EXTRALIBS_LIST="
1831     cpu_init
1832     cws2fws
1833 "
1834
1835 HWACCEL_LIBRARY_NONFREE_LIST="
1836     cuda_nvcc
1837     cuda_sdk
1838     libnpp
1839 "
1840
1841 HWACCEL_LIBRARY_LIST="
1842     $HWACCEL_LIBRARY_NONFREE_LIST
1843     libmfx
1844     mmal
1845     omx
1846     opencl
1847 "
1848
1849 DOCUMENT_LIST="
1850     doc
1851     htmlpages
1852     manpages
1853     podpages
1854     txtpages
1855 "
1856
1857 FEATURE_LIST="
1858     ftrapv
1859     gray
1860     hardcoded_tables
1861     omx_rpi
1862     runtime_cpudetect
1863     safe_bitstream_reader
1864     shared
1865     small
1866     static
1867     swscale_alpha
1868 "
1869
1870 # this list should be kept in linking order
1871 LIBRARY_LIST="
1872     avdevice
1873     avfilter
1874     swscale
1875     postproc
1876     avformat
1877     avcodec
1878     swresample
1879     avresample
1880     avutil
1881 "
1882
1883 LICENSE_LIST="
1884     gpl
1885     nonfree
1886     version3
1887 "
1888
1889 PROGRAM_LIST="
1890     ffplay
1891     ffprobe
1892     ffmpeg
1893 "
1894
1895 SUBSYSTEM_LIST="
1896     dct
1897     dwt
1898     error_resilience
1899     faan
1900     fast_unaligned
1901     fft
1902     lsp
1903     lzo
1904     mdct
1905     pixelutils
1906     network
1907     rdft
1908 "
1909
1910 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1911 CONFIG_LIST="
1912     $DOCUMENT_LIST
1913     $EXAMPLE_LIST
1914     $EXTERNAL_LIBRARY_LIST
1915     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1916     $HWACCEL_LIBRARY_LIST
1917     $HWACCEL_AUTODETECT_LIBRARY_LIST
1918     $FEATURE_LIST
1919     $LICENSE_LIST
1920     $LIBRARY_LIST
1921     $PROGRAM_LIST
1922     $SUBSYSTEM_LIST
1923     autodetect
1924     fontconfig
1925     linux_perf
1926     memory_poisoning
1927     neon_clobber_test
1928     ossfuzz
1929     pic
1930     thumb
1931     valgrind_backtrace
1932     xmm_clobber_test
1933     $COMPONENT_LIST
1934 "
1935
1936 THREADS_LIST="
1937     pthreads
1938     os2threads
1939     w32threads
1940 "
1941
1942 ATOMICS_LIST="
1943     atomics_gcc
1944     atomics_suncc
1945     atomics_win32
1946 "
1947
1948 AUTODETECT_LIBS="
1949     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1950     $HWACCEL_AUTODETECT_LIBRARY_LIST
1951     $THREADS_LIST
1952 "
1953
1954 ARCH_LIST="
1955     aarch64
1956     alpha
1957     arm
1958     avr32
1959     avr32_ap
1960     avr32_uc
1961     bfin
1962     ia64
1963     m68k
1964     mips
1965     mips64
1966     parisc
1967     ppc
1968     ppc64
1969     s390
1970     sh4
1971     sparc
1972     sparc64
1973     tilegx
1974     tilepro
1975     tomi
1976     x86
1977     x86_32
1978     x86_64
1979 "
1980
1981 ARCH_EXT_LIST_ARM="
1982     armv5te
1983     armv6
1984     armv6t2
1985     armv8
1986     neon
1987     vfp
1988     vfpv3
1989     setend
1990 "
1991
1992 ARCH_EXT_LIST_MIPS="
1993     mipsfpu
1994     mips32r2
1995     mips32r5
1996     mips64r2
1997     mips32r6
1998     mips64r6
1999     mipsdsp
2000     mipsdspr2
2001     msa
2002 "
2003
2004 ARCH_EXT_LIST_LOONGSON="
2005     loongson2
2006     loongson3
2007     mmi
2008 "
2009
2010 ARCH_EXT_LIST_X86_SIMD="
2011     aesni
2012     amd3dnow
2013     amd3dnowext
2014     avx
2015     avx2
2016     avx512
2017     fma3
2018     fma4
2019     mmx
2020     mmxext
2021     sse
2022     sse2
2023     sse3
2024     sse4
2025     sse42
2026     ssse3
2027     xop
2028 "
2029
2030 ARCH_EXT_LIST_PPC="
2031     altivec
2032     dcbzl
2033     ldbrx
2034     power8
2035     ppc4xx
2036     vsx
2037 "
2038
2039 ARCH_EXT_LIST_X86="
2040     $ARCH_EXT_LIST_X86_SIMD
2041     cpunop
2042     i686
2043 "
2044
2045 ARCH_EXT_LIST="
2046     $ARCH_EXT_LIST_ARM
2047     $ARCH_EXT_LIST_PPC
2048     $ARCH_EXT_LIST_X86
2049     $ARCH_EXT_LIST_MIPS
2050     $ARCH_EXT_LIST_LOONGSON
2051 "
2052
2053 ARCH_FEATURES="
2054     aligned_stack
2055     fast_64bit
2056     fast_clz
2057     fast_cmov
2058     local_aligned
2059     simd_align_16
2060     simd_align_32
2061     simd_align_64
2062 "
2063
2064 BUILTIN_LIST="
2065     atomic_cas_ptr
2066     machine_rw_barrier
2067     MemoryBarrier
2068     mm_empty
2069     rdtsc
2070     sem_timedwait
2071     sync_val_compare_and_swap
2072 "
2073 HAVE_LIST_CMDLINE="
2074     inline_asm
2075     symver
2076     x86asm
2077 "
2078
2079 HAVE_LIST_PUB="
2080     bigendian
2081     fast_unaligned
2082 "
2083
2084 HEADERS_LIST="
2085     arpa_inet_h
2086     asm_types_h
2087     cdio_paranoia_h
2088     cdio_paranoia_paranoia_h
2089     cuda_h
2090     dispatch_dispatch_h
2091     dev_bktr_ioctl_bt848_h
2092     dev_bktr_ioctl_meteor_h
2093     dev_ic_bt8xx_h
2094     dev_video_bktr_ioctl_bt848_h
2095     dev_video_meteor_ioctl_meteor_h
2096     direct_h
2097     dirent_h
2098     dxgidebug_h
2099     dxva_h
2100     ES2_gl_h
2101     gsm_h
2102     io_h
2103     linux_perf_event_h
2104     machine_ioctl_bt848_h
2105     machine_ioctl_meteor_h
2106     malloc_h
2107     opencv2_core_core_c_h
2108     OpenGL_gl3_h
2109     poll_h
2110     sys_param_h
2111     sys_resource_h
2112     sys_select_h
2113     sys_soundcard_h
2114     sys_time_h
2115     sys_un_h
2116     sys_videoio_h
2117     termios_h
2118     udplite_h
2119     unistd_h
2120     valgrind_valgrind_h
2121     windows_h
2122     winsock2_h
2123 "
2124
2125 INTRINSICS_LIST="
2126     intrinsics_neon
2127 "
2128
2129 COMPLEX_FUNCS="
2130     cabs
2131     cexp
2132 "
2133
2134 MATH_FUNCS="
2135     atanf
2136     atan2f
2137     cbrt
2138     cbrtf
2139     copysign
2140     cosf
2141     erf
2142     exp2
2143     exp2f
2144     expf
2145     hypot
2146     isfinite
2147     isinf
2148     isnan
2149     ldexpf
2150     llrint
2151     llrintf
2152     log2
2153     log2f
2154     log10f
2155     lrint
2156     lrintf
2157     powf
2158     rint
2159     round
2160     roundf
2161     sinf
2162     trunc
2163     truncf
2164 "
2165
2166 SYSTEM_FEATURES="
2167     dos_paths
2168     libc_msvcrt
2169     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2170     section_data_rel_ro
2171     threads
2172     uwp
2173     winrt
2174 "
2175
2176 SYSTEM_FUNCS="
2177     access
2178     aligned_malloc
2179     arc4random
2180     clock_gettime
2181     closesocket
2182     CommandLineToArgvW
2183     fcntl
2184     getaddrinfo
2185     gethrtime
2186     getopt
2187     GetProcessAffinityMask
2188     GetProcessMemoryInfo
2189     GetProcessTimes
2190     getrusage
2191     GetSystemTimeAsFileTime
2192     gettimeofday
2193     glob
2194     glXGetProcAddress
2195     gmtime_r
2196     inet_aton
2197     isatty
2198     kbhit
2199     localtime_r
2200     lstat
2201     lzo1x_999_compress
2202     mach_absolute_time
2203     MapViewOfFile
2204     memalign
2205     mkstemp
2206     mmap
2207     mprotect
2208     nanosleep
2209     PeekNamedPipe
2210     posix_memalign
2211     pthread_cancel
2212     sched_getaffinity
2213     SecItemImport
2214     SetConsoleTextAttribute
2215     SetConsoleCtrlHandler
2216     setmode
2217     setrlimit
2218     Sleep
2219     strerror_r
2220     sysconf
2221     sysctl
2222     usleep
2223     UTGetOSTypeFromString
2224     VirtualAlloc
2225     wglGetProcAddress
2226 "
2227
2228 SYSTEM_LIBRARIES="
2229     bcrypt
2230     vaapi_drm
2231     vaapi_x11
2232     vdpau_x11
2233 "
2234
2235 TOOLCHAIN_FEATURES="
2236     as_arch_directive
2237     as_dn_directive
2238     as_fpu_directive
2239     as_func
2240     as_object_arch
2241     asm_mod_q
2242     blocks_extension
2243     ebp_available
2244     ebx_available
2245     gnu_as
2246     gnu_windres
2247     ibm_asm
2248     inline_asm_direct_symbol_refs
2249     inline_asm_labels
2250     inline_asm_nonlocal_labels
2251     pragma_deprecated
2252     rsync_contimeout
2253     symver_asm_label
2254     symver_gnu_asm
2255     vfp_args
2256     xform_asm
2257     xmm_clobbers
2258 "
2259
2260 TYPES_LIST="
2261     kCMVideoCodecType_HEVC
2262     kCVPixelFormatType_420YpCbCr10BiPlanarVideoRange
2263     socklen_t
2264     struct_addrinfo
2265     struct_group_source_req
2266     struct_ip_mreq_source
2267     struct_ipv6_mreq
2268     struct_msghdr_msg_flags
2269     struct_pollfd
2270     struct_rusage_ru_maxrss
2271     struct_sctp_event_subscribe
2272     struct_sockaddr_in6
2273     struct_sockaddr_sa_len
2274     struct_sockaddr_storage
2275     struct_stat_st_mtim_tv_nsec
2276     struct_v4l2_frmivalenum_discrete
2277 "
2278
2279 HAVE_LIST="
2280     $ARCH_EXT_LIST
2281     $(add_suffix _external $ARCH_EXT_LIST)
2282     $(add_suffix _inline   $ARCH_EXT_LIST)
2283     $ARCH_FEATURES
2284     $BUILTIN_LIST
2285     $COMPLEX_FUNCS
2286     $HAVE_LIST_CMDLINE
2287     $HAVE_LIST_PUB
2288     $HEADERS_LIST
2289     $INTRINSICS_LIST
2290     $MATH_FUNCS
2291     $SYSTEM_FEATURES
2292     $SYSTEM_FUNCS
2293     $SYSTEM_LIBRARIES
2294     $THREADS_LIST
2295     $TOOLCHAIN_FEATURES
2296     $TYPES_LIST
2297     makeinfo
2298     makeinfo_html
2299     opencl_d3d11
2300     opencl_drm_arm
2301     opencl_drm_beignet
2302     opencl_dxva2
2303     opencl_vaapi_beignet
2304     opencl_vaapi_intel_media
2305     perl
2306     pod2man
2307     texi2html
2308 "
2309
2310 # options emitted with CONFIG_ prefix but not available on the command line
2311 CONFIG_EXTRA="
2312     aandcttables
2313     ac3dsp
2314     adts_header
2315     audio_frame_queue
2316     audiodsp
2317     blockdsp
2318     bswapdsp
2319     cabac
2320     cbs
2321     cbs_av1
2322     cbs_h264
2323     cbs_h265
2324     cbs_jpeg
2325     cbs_mpeg2
2326     cbs_vp9
2327     dirac_parse
2328     dnn
2329     dvprofile
2330     exif
2331     faandct
2332     faanidct
2333     fdctdsp
2334     flacdsp
2335     fmtconvert
2336     frame_thread_encoder
2337     g722dsp
2338     golomb
2339     gplv3
2340     h263dsp
2341     h264chroma
2342     h264dsp
2343     h264parse
2344     h264pred
2345     h264qpel
2346     hevcparse
2347     hpeldsp
2348     huffman
2349     huffyuvdsp
2350     huffyuvencdsp
2351     idctdsp
2352     iirfilter
2353     mdct15
2354     intrax8
2355     iso_media
2356     ividsp
2357     jpegtables
2358     lgplv3
2359     libx262
2360     llauddsp
2361     llviddsp
2362     llvidencdsp
2363     lpc
2364     lzf
2365     me_cmp
2366     mpeg_er
2367     mpegaudio
2368     mpegaudiodsp
2369     mpegaudioheader
2370     mpegvideo
2371     mpegvideoenc
2372     mss34dsp
2373     pixblockdsp
2374     qpeldsp
2375     qsv
2376     qsvdec
2377     qsvenc
2378     qsvvpp
2379     rangecoder
2380     riffdec
2381     riffenc
2382     rtpdec
2383     rtpenc_chain
2384     rv34dsp
2385     scene_sad
2386     sinewin
2387     snappy
2388     srtp
2389     startcode
2390     texturedsp
2391     texturedspenc
2392     tpeldsp
2393     vaapi_1
2394     vaapi_encode
2395     vc1dsp
2396     videodsp
2397     vp3dsp
2398     vp56dsp
2399     vp8dsp
2400     wma_freqs
2401     wmv2dsp
2402 "
2403
2404 CMDLINE_SELECT="
2405     $ARCH_EXT_LIST
2406     $CONFIG_LIST
2407     $HAVE_LIST_CMDLINE
2408     $THREADS_LIST
2409     asm
2410     cross_compile
2411     debug
2412     extra_warnings
2413     logging
2414     lto
2415     optimizations
2416     rpath
2417     stripping
2418 "
2419
2420 PATHS_LIST="
2421     bindir
2422     datadir
2423     docdir
2424     incdir
2425     libdir
2426     mandir
2427     pkgconfigdir
2428     prefix
2429     shlibdir
2430     install_name_dir
2431 "
2432
2433 CMDLINE_SET="
2434     $PATHS_LIST
2435     ar
2436     arch
2437     as
2438     assert_level
2439     build_suffix
2440     cc
2441     objcc
2442     cpu
2443     cross_prefix
2444     custom_allocator
2445     cxx
2446     dep_cc
2447     doxygen
2448     env
2449     extra_version
2450     gas
2451     host_cc
2452     host_cflags
2453     host_extralibs
2454     host_ld
2455     host_ldflags
2456     host_os
2457     ignore_tests
2458     install
2459     ld
2460     ln_s
2461     logfile
2462     malloc_prefix
2463     nm
2464     optflags
2465     nvcc
2466     nvccflags
2467     pkg_config
2468     pkg_config_flags
2469     progs_suffix
2470     random_seed
2471     ranlib
2472     samples
2473     strip
2474     sws_max_filter_size
2475     sysinclude
2476     sysroot
2477     target_exec
2478     target_os
2479     target_path
2480     target_samples
2481     tempprefix
2482     toolchain
2483     valgrind
2484     windres
2485     x86asmexe
2486 "
2487
2488 CMDLINE_APPEND="
2489     extra_cflags
2490     extra_cxxflags
2491     extra_objcflags
2492     host_cppflags
2493 "
2494
2495 # code dependency declarations
2496
2497 # architecture extensions
2498
2499 armv5te_deps="arm"
2500 armv6_deps="arm"
2501 armv6t2_deps="arm"
2502 armv8_deps="aarch64"
2503 neon_deps_any="aarch64 arm"
2504 intrinsics_neon_deps="neon"
2505 vfp_deps_any="aarch64 arm"
2506 vfpv3_deps="vfp"
2507 setend_deps="arm"
2508
2509 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2510
2511 altivec_deps="ppc"
2512 dcbzl_deps="ppc"
2513 ldbrx_deps="ppc"
2514 ppc4xx_deps="ppc"
2515 vsx_deps="altivec"
2516 power8_deps="vsx"
2517
2518 loongson2_deps="mips"
2519 loongson3_deps="mips"
2520 mips32r2_deps="mips"
2521 mips32r5_deps="mips"
2522 mips32r6_deps="mips"
2523 mips64r2_deps="mips"
2524 mips64r6_deps="mips"
2525 mipsfpu_deps="mips"
2526 mipsdsp_deps="mips"
2527 mipsdspr2_deps="mips"
2528 mmi_deps="mips"
2529 msa_deps="mipsfpu"
2530
2531 cpunop_deps="i686"
2532 x86_64_select="i686"
2533 x86_64_suggest="fast_cmov"
2534
2535 amd3dnow_deps="mmx"
2536 amd3dnowext_deps="amd3dnow"
2537 i686_deps="x86"
2538 mmx_deps="x86"
2539 mmxext_deps="mmx"
2540 sse_deps="mmxext"
2541 sse2_deps="sse"
2542 sse3_deps="sse2"
2543 ssse3_deps="sse3"
2544 sse4_deps="ssse3"
2545 sse42_deps="sse4"
2546 aesni_deps="sse42"
2547 avx_deps="sse42"
2548 xop_deps="avx"
2549 fma3_deps="avx"
2550 fma4_deps="avx"
2551 avx2_deps="avx"
2552 avx512_deps="avx2"
2553
2554 mmx_external_deps="x86asm"
2555 mmx_inline_deps="inline_asm x86"
2556 mmx_suggest="mmx_external mmx_inline"
2557
2558 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2559     eval dep=\$${ext}_deps
2560     eval ${ext}_external_deps='"${dep}_external"'
2561     eval ${ext}_inline_deps='"${dep}_inline"'
2562     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2563 done
2564
2565 aligned_stack_if_any="aarch64 ppc x86"
2566 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2567 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2568 fast_unaligned_if_any="aarch64 ppc x86"
2569 simd_align_16_if_any="altivec neon sse"
2570 simd_align_32_if_any="avx"
2571 simd_align_64_if_any="avx512"
2572
2573 # system capabilities
2574 linux_perf_deps="linux_perf_event_h"
2575 symver_if_any="symver_asm_label symver_gnu_asm"
2576 valgrind_backtrace_conflict="optimizations"
2577 valgrind_backtrace_deps="valgrind_valgrind_h"
2578
2579 # threading support
2580 atomics_gcc_if="sync_val_compare_and_swap"
2581 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2582 atomics_win32_if="MemoryBarrier"
2583 atomics_native_if_any="$ATOMICS_LIST"
2584 w32threads_deps="atomics_native"
2585 threads_if_any="$THREADS_LIST"
2586
2587 # subsystems
2588 cbs_av1_select="cbs"
2589 cbs_h264_select="cbs golomb"
2590 cbs_h265_select="cbs golomb"
2591 cbs_jpeg_select="cbs"
2592 cbs_mpeg2_select="cbs"
2593 cbs_vp9_select="cbs"
2594 dct_select="rdft"
2595 dirac_parse_select="golomb"
2596 dnn_suggest="libtensorflow"
2597 error_resilience_select="me_cmp"
2598 faandct_deps="faan"
2599 faandct_select="fdctdsp"
2600 faanidct_deps="faan"
2601 faanidct_select="idctdsp"
2602 h264dsp_select="startcode"
2603 hevcparse_select="golomb"
2604 frame_thread_encoder_deps="encoders threads"
2605 intrax8_select="blockdsp idctdsp"
2606 mdct_select="fft"
2607 mdct15_select="fft"
2608 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2609 mpeg_er_select="error_resilience"
2610 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2611 mpegaudiodsp_select="dct"
2612 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2613 mpegvideoenc_select="aandcttables me_cmp mpegvideo pixblockdsp qpeldsp"
2614 vc1dsp_select="h264chroma qpeldsp startcode"
2615 rdft_select="fft"
2616
2617 # decoders / encoders
2618 aac_decoder_select="adts_header mdct15 mdct sinewin"
2619 aac_fixed_decoder_select="adts_header mdct sinewin"
2620 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2621 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2622 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2623 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2624 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2625 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2626 adpcm_g722_decoder_select="g722dsp"
2627 adpcm_g722_encoder_select="g722dsp"
2628 aic_decoder_select="golomb idctdsp"
2629 alac_encoder_select="lpc"
2630 als_decoder_select="bswapdsp"
2631 amrnb_decoder_select="lsp"
2632 amrwb_decoder_select="lsp"
2633 amv_decoder_select="sp5x_decoder exif"
2634 amv_encoder_select="jpegtables mpegvideoenc"
2635 ape_decoder_select="bswapdsp llauddsp"
2636 apng_decoder_deps="zlib"
2637 apng_encoder_deps="zlib"
2638 apng_encoder_select="llvidencdsp"
2639 aptx_decoder_select="audio_frame_queue"
2640 aptx_encoder_select="audio_frame_queue"
2641 aptx_hd_decoder_select="audio_frame_queue"
2642 aptx_hd_encoder_select="audio_frame_queue"
2643 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2644 asv1_encoder_select="aandcttables bswapdsp fdctdsp pixblockdsp"
2645 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2646 asv2_encoder_select="aandcttables bswapdsp fdctdsp pixblockdsp"
2647 atrac1_decoder_select="mdct sinewin"
2648 atrac3_decoder_select="mdct"
2649 atrac3p_decoder_select="mdct sinewin"
2650 atrac9_decoder_select="mdct"
2651 avrn_decoder_select="exif jpegtables"
2652 bink_decoder_select="blockdsp hpeldsp"
2653 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2654 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2655 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2656 clearvideo_decoder_select="idctdsp"
2657 cllc_decoder_select="bswapdsp"
2658 comfortnoise_encoder_select="lpc"
2659 cook_decoder_select="audiodsp mdct sinewin"
2660 cscd_decoder_select="lzo"
2661 cscd_decoder_suggest="zlib"
2662 dca_decoder_select="mdct"
2663 dds_decoder_select="texturedsp"
2664 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2665 dnxhd_decoder_select="blockdsp idctdsp"
2666 dnxhd_encoder_select="blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2667 dolby_e_decoder_select="mdct"
2668 dvvideo_decoder_select="dvprofile idctdsp"
2669 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2670 dxa_decoder_deps="zlib"
2671 dxv_decoder_select="lzf texturedsp"
2672 eac3_decoder_select="ac3_decoder"
2673 eac3_encoder_select="ac3_encoder"
2674 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2675 eatgq_decoder_select="aandcttables"
2676 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2677 exr_decoder_deps="zlib"
2678 ffv1_decoder_select="rangecoder"
2679 ffv1_encoder_select="rangecoder"
2680 ffvhuff_decoder_select="huffyuv_decoder"
2681 ffvhuff_encoder_select="huffyuv_encoder"
2682 fic_decoder_select="golomb"
2683 flac_decoder_select="flacdsp"
2684 flac_encoder_select="bswapdsp flacdsp lpc"
2685 flashsv2_decoder_deps="zlib"
2686 flashsv2_encoder_deps="zlib"
2687 flashsv_decoder_deps="zlib"
2688 flashsv_encoder_deps="zlib"
2689 flv_decoder_select="h263_decoder"
2690 flv_encoder_select="h263_encoder"
2691 fourxm_decoder_select="blockdsp bswapdsp"
2692 fraps_decoder_select="bswapdsp huffman"
2693 g2m_decoder_deps="zlib"
2694 g2m_decoder_select="blockdsp idctdsp jpegtables"
2695 g729_decoder_select="audiodsp"
2696 h261_decoder_select="mpegvideo"
2697 h261_encoder_select="mpegvideoenc"
2698 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2699 h263_encoder_select="h263dsp mpegvideoenc"
2700 h263i_decoder_select="h263_decoder"
2701 h263p_decoder_select="h263_decoder"
2702 h263p_encoder_select="h263_encoder"
2703 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2704 h264_decoder_suggest="error_resilience"
2705 hap_decoder_select="snappy texturedsp"
2706 hap_encoder_deps="libsnappy"
2707 hap_encoder_select="texturedspenc"
2708 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2709 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2710 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2711 hymt_decoder_select="huffyuv_decoder"
2712 iac_decoder_select="imc_decoder"
2713 imc_decoder_select="bswapdsp fft mdct sinewin"
2714 indeo3_decoder_select="hpeldsp"
2715 indeo4_decoder_select="ividsp"
2716 indeo5_decoder_select="ividsp"
2717 interplay_video_decoder_select="hpeldsp"
2718 jpegls_decoder_select="mjpeg_decoder"
2719 jv_decoder_select="blockdsp"
2720 lagarith_decoder_select="llviddsp"
2721 ljpeg_encoder_select="idctdsp jpegtables mpegvideoenc"
2722 lscr_decoder_deps="zlib"
2723 magicyuv_decoder_select="llviddsp"
2724 magicyuv_encoder_select="llvidencdsp"
2725 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2726 metasound_decoder_select="lsp mdct sinewin"
2727 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2728 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2729 mjpeg_encoder_select="jpegtables mpegvideoenc"
2730 mjpegb_decoder_select="mjpeg_decoder"
2731 mlp_decoder_select="mlp_parser"
2732 mlp_encoder_select="lpc audio_frame_queue"
2733 motionpixels_decoder_select="bswapdsp"
2734 mp1_decoder_select="mpegaudio"
2735 mp1float_decoder_select="mpegaudio"
2736 mp2_decoder_select="mpegaudio"
2737 mp2float_decoder_select="mpegaudio"
2738 mp3_decoder_select="mpegaudio"
2739 mp3adu_decoder_select="mpegaudio"
2740 mp3adufloat_decoder_select="mpegaudio"
2741 mp3float_decoder_select="mpegaudio"
2742 mp3on4_decoder_select="mpegaudio"
2743 mp3on4float_decoder_select="mpegaudio"
2744 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2745 mpc8_decoder_select="mpegaudiodsp"
2746 mpegvideo_decoder_select="mpegvideo"
2747 mpeg1video_decoder_select="mpegvideo"
2748 mpeg1video_encoder_select="mpegvideoenc h263dsp"
2749 mpeg2video_decoder_select="mpegvideo"
2750 mpeg2video_encoder_select="mpegvideoenc h263dsp"
2751 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2752 mpeg4_encoder_select="h263_encoder"
2753 msa1_decoder_select="mss34dsp"
2754 mscc_decoder_deps="zlib"
2755 msmpeg4v1_decoder_select="h263_decoder"
2756 msmpeg4v2_decoder_select="h263_decoder"
2757 msmpeg4v2_encoder_select="h263_encoder"
2758 msmpeg4v3_decoder_select="h263_decoder"
2759 msmpeg4v3_encoder_select="h263_encoder"
2760 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2761 mts2_decoder_select="mss34dsp"
2762 mwsc_decoder_deps="zlib"
2763 mxpeg_decoder_select="mjpeg_decoder"
2764 nellymoser_decoder_select="mdct sinewin"
2765 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2766 nuv_decoder_select="idctdsp lzo"
2767 on2avc_decoder_select="mdct"
2768 opus_decoder_deps="swresample"
2769 opus_decoder_select="mdct15"
2770 opus_encoder_select="audio_frame_queue mdct15"
2771 png_decoder_deps="zlib"
2772 png_encoder_deps="zlib"
2773 png_encoder_select="llvidencdsp"
2774 prores_decoder_select="blockdsp idctdsp"
2775 prores_encoder_select="fdctdsp"
2776 qcelp_decoder_select="lsp"
2777 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2778 ra_144_decoder_select="audiodsp"
2779 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2780 ralf_decoder_select="golomb"
2781 rasc_decoder_deps="zlib"
2782 rawvideo_decoder_select="bswapdsp"
2783 rscc_decoder_deps="zlib"
2784 rtjpeg_decoder_select="me_cmp"
2785 rv10_decoder_select="h263_decoder"
2786 rv10_encoder_select="h263_encoder"
2787 rv20_decoder_select="h263_decoder"
2788 rv20_encoder_select="h263_encoder"
2789 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2790 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2791 screenpresso_decoder_deps="zlib"
2792 shorten_decoder_select="bswapdsp"
2793 sipr_decoder_select="lsp"
2794 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2795 snow_encoder_select="dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2796 sonic_decoder_select="golomb rangecoder"
2797 sonic_encoder_select="golomb rangecoder"
2798 sonic_ls_encoder_select="golomb rangecoder"
2799 sp5x_decoder_select="mjpeg_decoder"
2800 speedhq_decoder_select="mpegvideo"
2801 srgc_decoder_deps="zlib"
2802 svq1_decoder_select="hpeldsp"
2803 svq1_encoder_select="hpeldsp me_cmp mpegvideoenc"
2804 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2805 svq3_decoder_suggest="zlib"
2806 tak_decoder_select="audiodsp"
2807 tdsc_decoder_deps="zlib"
2808 tdsc_decoder_select="mjpeg_decoder"
2809 theora_decoder_select="vp3_decoder"
2810 thp_decoder_select="mjpeg_decoder"
2811 tiff_decoder_suggest="zlib lzma"
2812 tiff_encoder_suggest="zlib"
2813 truehd_decoder_select="mlp_parser"
2814 truehd_encoder_select="lpc audio_frame_queue"
2815 truemotion2_decoder_select="bswapdsp"
2816 truespeech_decoder_select="bswapdsp"
2817 tscc_decoder_deps="zlib"
2818 twinvq_decoder_select="mdct lsp sinewin"
2819 txd_decoder_select="texturedsp"
2820 utvideo_decoder_select="bswapdsp llviddsp"
2821 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2822 vble_decoder_select="llviddsp"
2823 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2824 vc1image_decoder_select="vc1_decoder"
2825 vorbis_decoder_select="mdct"
2826 vorbis_encoder_select="audio_frame_queue mdct"
2827 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2828 vp4_decoder_select="vp3_decoder"
2829 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2830 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2831 vp6a_decoder_select="vp6_decoder"
2832 vp6f_decoder_select="vp6_decoder"
2833 vp7_decoder_select="h264pred videodsp vp8dsp"
2834 vp8_decoder_select="h264pred videodsp vp8dsp"
2835 vp9_decoder_select="videodsp vp9_parser vp9_superframe_split_bsf"
2836 wcmv_decoder_deps="zlib"
2837 webp_decoder_select="vp8_decoder exif"
2838 wmalossless_decoder_select="llauddsp"
2839 wmapro_decoder_select="mdct sinewin wma_freqs"
2840 wmav1_decoder_select="mdct sinewin wma_freqs"
2841 wmav1_encoder_select="mdct sinewin wma_freqs"
2842 wmav2_decoder_select="mdct sinewin wma_freqs"
2843 wmav2_encoder_select="mdct sinewin wma_freqs"
2844 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2845 wmv1_decoder_select="h263_decoder"
2846 wmv1_encoder_select="h263_encoder"
2847 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2848 wmv2_encoder_select="h263_encoder wmv2dsp"
2849 wmv3_decoder_select="vc1_decoder"
2850 wmv3image_decoder_select="wmv3_decoder"
2851 xma1_decoder_select="wmapro_decoder"
2852 xma2_decoder_select="wmapro_decoder"
2853 zerocodec_decoder_deps="zlib"
2854 zlib_decoder_deps="zlib"
2855 zlib_encoder_deps="zlib"
2856 zmbv_decoder_deps="zlib"
2857 zmbv_encoder_deps="zlib"
2858
2859 # hardware accelerators
2860 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2861 cuda_deps="ffnvcodec"
2862 cuvid_deps="ffnvcodec"
2863 d3d11va_deps="dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2864 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2865 ffnvcodec_deps_any="libdl LoadLibrary"
2866 nvdec_deps="ffnvcodec"
2867 vaapi_x11_deps="xlib"
2868 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2869 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2870 xvmc_deps="X11_extensions_XvMClib_h"
2871
2872 h263_vaapi_hwaccel_deps="vaapi"
2873 h263_vaapi_hwaccel_select="h263_decoder"
2874 h263_videotoolbox_hwaccel_deps="videotoolbox"
2875 h263_videotoolbox_hwaccel_select="h263_decoder"
2876 h264_d3d11va_hwaccel_deps="d3d11va"
2877 h264_d3d11va_hwaccel_select="h264_decoder"
2878 h264_d3d11va2_hwaccel_deps="d3d11va"
2879 h264_d3d11va2_hwaccel_select="h264_decoder"
2880 h264_dxva2_hwaccel_deps="dxva2"
2881 h264_dxva2_hwaccel_select="h264_decoder"
2882 h264_nvdec_hwaccel_deps="nvdec"
2883 h264_nvdec_hwaccel_select="h264_decoder"
2884 h264_vaapi_hwaccel_deps="vaapi"
2885 h264_vaapi_hwaccel_select="h264_decoder"
2886 h264_vdpau_hwaccel_deps="vdpau"
2887 h264_vdpau_hwaccel_select="h264_decoder"
2888 h264_videotoolbox_hwaccel_deps="videotoolbox"
2889 h264_videotoolbox_hwaccel_select="h264_decoder"
2890 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2891 hevc_d3d11va_hwaccel_select="hevc_decoder"
2892 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2893 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2894 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2895 hevc_dxva2_hwaccel_select="hevc_decoder"
2896 hevc_nvdec_hwaccel_deps="nvdec"
2897 hevc_nvdec_hwaccel_select="hevc_decoder"
2898 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2899 hevc_vaapi_hwaccel_select="hevc_decoder"
2900 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2901 hevc_vdpau_hwaccel_select="hevc_decoder"
2902 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2903 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2904 mjpeg_nvdec_hwaccel_deps="nvdec"
2905 mjpeg_nvdec_hwaccel_select="mjpeg_decoder"
2906 mjpeg_vaapi_hwaccel_deps="vaapi"
2907 mjpeg_vaapi_hwaccel_select="mjpeg_decoder"
2908 mpeg_xvmc_hwaccel_deps="xvmc"
2909 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2910 mpeg1_nvdec_hwaccel_deps="nvdec"
2911 mpeg1_nvdec_hwaccel_select="mpeg1video_decoder"
2912 mpeg1_vdpau_hwaccel_deps="vdpau"
2913 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2914 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2915 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2916 mpeg1_xvmc_hwaccel_deps="xvmc"
2917 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2918 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2919 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2920 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2921 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2922 mpeg2_dxva2_hwaccel_deps="dxva2"
2923 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2924 mpeg2_nvdec_hwaccel_deps="nvdec"
2925 mpeg2_nvdec_hwaccel_select="mpeg2video_decoder"
2926 mpeg2_vaapi_hwaccel_deps="vaapi"
2927 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2928 mpeg2_vdpau_hwaccel_deps="vdpau"
2929 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2930 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2931 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2932 mpeg2_xvmc_hwaccel_deps="xvmc"
2933 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2934 mpeg4_nvdec_hwaccel_deps="nvdec"
2935 mpeg4_nvdec_hwaccel_select="mpeg4_decoder"
2936 mpeg4_vaapi_hwaccel_deps="vaapi"
2937 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2938 mpeg4_vdpau_hwaccel_deps="vdpau"
2939 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2940 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2941 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2942 vc1_d3d11va_hwaccel_deps="d3d11va"
2943 vc1_d3d11va_hwaccel_select="vc1_decoder"
2944 vc1_d3d11va2_hwaccel_deps="d3d11va"
2945 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2946 vc1_dxva2_hwaccel_deps="dxva2"
2947 vc1_dxva2_hwaccel_select="vc1_decoder"
2948 vc1_nvdec_hwaccel_deps="nvdec"
2949 vc1_nvdec_hwaccel_select="vc1_decoder"
2950 vc1_vaapi_hwaccel_deps="vaapi"
2951 vc1_vaapi_hwaccel_select="vc1_decoder"
2952 vc1_vdpau_hwaccel_deps="vdpau"
2953 vc1_vdpau_hwaccel_select="vc1_decoder"
2954 vp8_nvdec_hwaccel_deps="nvdec"
2955 vp8_nvdec_hwaccel_select="vp8_decoder"
2956 vp8_vaapi_hwaccel_deps="vaapi"
2957 vp8_vaapi_hwaccel_select="vp8_decoder"
2958 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2959 vp9_d3d11va_hwaccel_select="vp9_decoder"
2960 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2961 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2962 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2963 vp9_dxva2_hwaccel_select="vp9_decoder"
2964 vp9_nvdec_hwaccel_deps="nvdec"
2965 vp9_nvdec_hwaccel_select="vp9_decoder"
2966 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2967 vp9_vaapi_hwaccel_select="vp9_decoder"
2968 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2969 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2970 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2971 wmv3_nvdec_hwaccel_select="vc1_nvdec_hwaccel"
2972 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2973 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2974
2975 # hardware-accelerated codecs
2976 omx_deps="libdl pthreads"
2977 omx_rpi_select="omx"
2978 qsv_deps="libmfx"
2979 qsvdec_select="qsv"
2980 qsvenc_select="qsv"
2981 qsvvpp_select="qsv"
2982 vaapi_encode_deps="vaapi"
2983 v4l2_m2m_deps="linux_videodev2_h sem_timedwait"
2984
2985 hwupload_cuda_filter_deps="ffnvcodec"
2986 scale_npp_filter_deps="ffnvcodec libnpp"
2987 scale_cuda_filter_deps="ffnvcodec cuda_nvcc"
2988 thumbnail_cuda_filter_deps="ffnvcodec cuda_nvcc"
2989 transpose_npp_filter_deps="ffnvcodec libnpp"
2990
2991 amf_deps_any="libdl LoadLibrary"
2992 nvenc_deps="ffnvcodec"
2993 nvenc_deps_any="libdl LoadLibrary"
2994 nvenc_encoder_deps="nvenc"
2995
2996 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
2997 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
2998 h264_amf_encoder_deps="amf"
2999 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
3000 h264_cuvid_decoder_deps="cuvid"
3001 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
3002 h264_mediacodec_decoder_deps="mediacodec"
3003 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
3004 h264_mmal_decoder_deps="mmal"
3005 h264_nvenc_encoder_deps="nvenc"
3006 h264_omx_encoder_deps="omx"
3007 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec"
3008 h264_qsv_encoder_select="qsvenc"
3009 h264_rkmpp_decoder_deps="rkmpp"
3010 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
3011 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
3012 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
3013 h264_v4l2m2m_decoder_select="h264_mp4toannexb_bsf"
3014 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
3015 hevc_amf_encoder_deps="amf"
3016 hevc_cuvid_decoder_deps="cuvid"
3017 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
3018 hevc_mediacodec_decoder_deps="mediacodec"
3019 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
3020 hevc_nvenc_encoder_deps="nvenc"
3021 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec"
3022 hevc_qsv_encoder_select="hevcparse qsvenc"
3023 hevc_rkmpp_decoder_deps="rkmpp"
3024 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
3025 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
3026 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
3027 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
3028 hevc_v4l2m2m_decoder_select="hevc_mp4toannexb_bsf"
3029 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
3030 mjpeg_cuvid_decoder_deps="cuvid"
3031 mjpeg_qsv_encoder_deps="libmfx"
3032 mjpeg_qsv_encoder_select="qsvenc"
3033 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
3034 mjpeg_vaapi_encoder_select="cbs_jpeg jpegtables vaapi_encode"
3035 mpeg1_cuvid_decoder_deps="cuvid"
3036 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
3037 mpeg2_crystalhd_decoder_select="crystalhd"
3038 mpeg2_cuvid_decoder_deps="cuvid"
3039 mpeg2_mmal_decoder_deps="mmal"
3040 mpeg2_mediacodec_decoder_deps="mediacodec"
3041 mpeg2_qsv_decoder_select="qsvdec mpegvideo_parser"
3042 mpeg2_qsv_encoder_select="qsvenc"
3043 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
3044 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
3045 mpeg4_crystalhd_decoder_select="crystalhd"
3046 mpeg4_cuvid_decoder_deps="cuvid"
3047 mpeg4_mediacodec_decoder_deps="mediacodec"
3048 mpeg4_mmal_decoder_deps="mmal"
3049 mpeg4_omx_encoder_deps="omx"
3050 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
3051 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
3052 msmpeg4_crystalhd_decoder_select="crystalhd"
3053 nvenc_h264_encoder_select="h264_nvenc_encoder"
3054 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
3055 vc1_crystalhd_decoder_select="crystalhd"
3056 vc1_cuvid_decoder_deps="cuvid"
3057 vc1_mmal_decoder_deps="mmal"
3058 vc1_qsv_decoder_select="qsvdec vc1_parser"
3059 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
3060 vp8_cuvid_decoder_deps="cuvid"
3061 vp8_mediacodec_decoder_deps="mediacodec"
3062 vp8_qsv_decoder_select="qsvdec vp8_parser"
3063 vp8_rkmpp_decoder_deps="rkmpp"
3064 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
3065 vp8_vaapi_encoder_select="vaapi_encode"
3066 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
3067 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
3068 vp9_cuvid_decoder_deps="cuvid"
3069 vp9_mediacodec_decoder_deps="mediacodec"
3070 vp9_rkmpp_decoder_deps="rkmpp"
3071 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
3072 vp9_vaapi_encoder_select="vaapi_encode"
3073 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
3074 wmv3_crystalhd_decoder_select="crystalhd"
3075
3076 # parsers
3077 aac_parser_select="adts_header"
3078 av1_parser_select="cbs_av1"
3079 h264_parser_select="golomb h264dsp h264parse"
3080 hevc_parser_select="hevcparse"
3081 mpegaudio_parser_select="mpegaudioheader"
3082 mpegvideo_parser_select="mpegvideo"
3083 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
3084 vc1_parser_select="vc1dsp"
3085
3086 # bitstream_filters
3087 aac_adtstoasc_bsf_select="adts_header"
3088 av1_frame_split_bsf_select="cbs_av1"
3089 av1_metadata_bsf_select="cbs_av1"
3090 eac3_core_bsf_select="ac3_parser"
3091 filter_units_bsf_select="cbs"
3092 h264_metadata_bsf_deps="const_nan"
3093 h264_metadata_bsf_select="cbs_h264"
3094 h264_redundant_pps_bsf_select="cbs_h264"
3095 hevc_metadata_bsf_select="cbs_h265"
3096 mjpeg2jpeg_bsf_select="jpegtables"
3097 mpeg2_metadata_bsf_select="cbs_mpeg2"
3098 trace_headers_bsf_select="cbs"
3099 vp9_metadata_bsf_select="cbs_vp9"
3100
3101 # external libraries
3102 aac_at_decoder_deps="audiotoolbox"
3103 aac_at_decoder_select="aac_adtstoasc_bsf"
3104 ac3_at_decoder_deps="audiotoolbox"
3105 ac3_at_decoder_select="ac3_parser"
3106 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
3107 alac_at_decoder_deps="audiotoolbox"
3108 amr_nb_at_decoder_deps="audiotoolbox"
3109 avisynth_deps_any="libdl LoadLibrary"
3110 avisynth_demuxer_deps="avisynth"
3111 avisynth_demuxer_select="riffdec"
3112 eac3_at_decoder_deps="audiotoolbox"
3113 eac3_at_decoder_select="ac3_parser"
3114 gsm_ms_at_decoder_deps="audiotoolbox"
3115 ilbc_at_decoder_deps="audiotoolbox"
3116 mp1_at_decoder_deps="audiotoolbox"
3117 mp2_at_decoder_deps="audiotoolbox"
3118 mp3_at_decoder_deps="audiotoolbox"
3119 mp1_at_decoder_select="mpegaudioheader"
3120 mp2_at_decoder_select="mpegaudioheader"
3121 mp3_at_decoder_select="mpegaudioheader"
3122 pcm_alaw_at_decoder_deps="audiotoolbox"
3123 pcm_mulaw_at_decoder_deps="audiotoolbox"
3124 qdmc_at_decoder_deps="audiotoolbox"
3125 qdm2_at_decoder_deps="audiotoolbox"
3126 aac_at_encoder_deps="audiotoolbox"
3127 aac_at_encoder_select="audio_frame_queue"
3128 alac_at_encoder_deps="audiotoolbox"
3129 alac_at_encoder_select="audio_frame_queue"
3130 ilbc_at_encoder_deps="audiotoolbox"
3131 ilbc_at_encoder_select="audio_frame_queue"
3132 pcm_alaw_at_encoder_deps="audiotoolbox"
3133 pcm_alaw_at_encoder_select="audio_frame_queue"
3134 pcm_mulaw_at_encoder_deps="audiotoolbox"
3135 pcm_mulaw_at_encoder_select="audio_frame_queue"
3136 chromaprint_muxer_deps="chromaprint"
3137 h264_videotoolbox_encoder_deps="pthreads"
3138 h264_videotoolbox_encoder_select="videotoolbox_encoder"
3139 hevc_videotoolbox_encoder_deps="pthreads"
3140 hevc_videotoolbox_encoder_select="videotoolbox_encoder"
3141 libaom_av1_decoder_deps="libaom"
3142 libaom_av1_encoder_deps="libaom"
3143 libaom_av1_encoder_select="extract_extradata_bsf"
3144 libaribb24_decoder_deps="libaribb24"
3145 libcelt_decoder_deps="libcelt"
3146 libcodec2_decoder_deps="libcodec2"
3147 libcodec2_encoder_deps="libcodec2"
3148 libdav1d_decoder_deps="libdav1d"
3149 libdavs2_decoder_deps="libdavs2"
3150 libfdk_aac_decoder_deps="libfdk_aac"
3151 libfdk_aac_encoder_deps="libfdk_aac"
3152 libfdk_aac_encoder_select="audio_frame_queue"
3153 libgme_demuxer_deps="libgme"
3154 libgsm_decoder_deps="libgsm"
3155 libgsm_encoder_deps="libgsm"
3156 libgsm_ms_decoder_deps="libgsm"
3157 libgsm_ms_encoder_deps="libgsm"
3158 libilbc_decoder_deps="libilbc"
3159 libilbc_encoder_deps="libilbc"
3160 libkvazaar_encoder_deps="libkvazaar"
3161 libmodplug_demuxer_deps="libmodplug"
3162 libmp3lame_encoder_deps="libmp3lame"
3163 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
3164 libopencore_amrnb_decoder_deps="libopencore_amrnb"
3165 libopencore_amrnb_encoder_deps="libopencore_amrnb"
3166 libopencore_amrnb_encoder_select="audio_frame_queue"
3167 libopencore_amrwb_decoder_deps="libopencore_amrwb"
3168 libopenh264_decoder_deps="libopenh264"
3169 libopenh264_decoder_select="h264_mp4toannexb_bsf"
3170 libopenh264_encoder_deps="libopenh264"
3171 libopenjpeg_decoder_deps="libopenjpeg"
3172 libopenjpeg_encoder_deps="libopenjpeg"
3173 libopenmpt_demuxer_deps="libopenmpt"
3174 libopus_decoder_deps="libopus"
3175 libopus_encoder_deps="libopus"
3176 libopus_encoder_select="audio_frame_queue"
3177 librsvg_decoder_deps="librsvg"
3178 libshine_encoder_deps="libshine"
3179 libshine_encoder_select="audio_frame_queue"
3180 libspeex_decoder_deps="libspeex"
3181 libspeex_encoder_deps="libspeex"
3182 libspeex_encoder_select="audio_frame_queue"
3183 libtheora_encoder_deps="libtheora"
3184 libtwolame_encoder_deps="libtwolame"
3185 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
3186 libvorbis_decoder_deps="libvorbis"
3187 libvorbis_encoder_deps="libvorbis libvorbisenc"
3188 libvorbis_encoder_select="audio_frame_queue"
3189 libvpx_vp8_decoder_deps="libvpx"
3190 libvpx_vp8_encoder_deps="libvpx"
3191 libvpx_vp9_decoder_deps="libvpx"
3192 libvpx_vp9_encoder_deps="libvpx"
3193 libwavpack_encoder_deps="libwavpack"
3194 libwavpack_encoder_select="audio_frame_queue"
3195 libwebp_encoder_deps="libwebp"
3196 libwebp_anim_encoder_deps="libwebp"
3197 libx262_encoder_deps="libx262"
3198 libx264_encoder_deps="libx264"
3199 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
3200 libx264rgb_encoder_select="libx264_encoder"
3201 libx265_encoder_deps="libx265"
3202 libxavs_encoder_deps="libxavs"
3203 libxavs2_encoder_deps="libxavs2"
3204 libxvid_encoder_deps="libxvid"
3205 libzvbi_teletext_decoder_deps="libzvbi"
3206 vapoursynth_demuxer_deps="vapoursynth"
3207 videotoolbox_suggest="coreservices"
3208 videotoolbox_deps="corefoundation coremedia corevideo"
3209 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
3210
3211 # demuxers / muxers
3212 ac3_demuxer_select="ac3_parser"
3213 aiff_muxer_select="iso_media"
3214 asf_demuxer_select="riffdec"
3215 asf_o_demuxer_select="riffdec"
3216 asf_muxer_select="riffenc"
3217 asf_stream_muxer_select="asf_muxer"
3218 avi_demuxer_select="iso_media riffdec exif"
3219 avi_muxer_select="riffenc"
3220 caf_demuxer_select="iso_media riffdec"
3221 caf_muxer_select="iso_media"
3222 dash_muxer_select="mp4_muxer"
3223 dash_demuxer_deps="libxml2"
3224 dirac_demuxer_select="dirac_parser"
3225 dts_demuxer_select="dca_parser"
3226 dtshd_demuxer_select="dca_parser"
3227 dv_demuxer_select="dvprofile"
3228 dv_muxer_select="dvprofile"
3229 dxa_demuxer_select="riffdec"
3230 eac3_demuxer_select="ac3_parser"
3231 f4v_muxer_select="mov_muxer"
3232 fifo_muxer_deps="threads"
3233 flac_demuxer_select="flac_parser"
3234 hds_muxer_select="flv_muxer"
3235 hls_muxer_select="mpegts_muxer"
3236 hls_muxer_suggest="gcrypt openssl"
3237 image2_alias_pix_demuxer_select="image2_demuxer"
3238 image2_brender_pix_demuxer_select="image2_demuxer"
3239 ipod_muxer_select="mov_muxer"
3240 ismv_muxer_select="mov_muxer"
3241 ivf_muxer_select="av1_metadata_bsf vp9_superframe_bsf"
3242 matroska_audio_muxer_select="matroska_muxer"
3243 matroska_demuxer_select="iso_media riffdec"
3244 matroska_demuxer_suggest="bzlib lzo zlib"
3245 matroska_muxer_select="iso_media riffenc"
3246 mmf_muxer_select="riffenc"
3247 mov_demuxer_select="iso_media riffdec"
3248 mov_demuxer_suggest="zlib"
3249 mov_muxer_select="iso_media riffenc rtpenc_chain"
3250 mp3_demuxer_select="mpegaudio_parser"
3251 mp3_muxer_select="mpegaudioheader"
3252 mp4_muxer_select="mov_muxer"
3253 mpegts_demuxer_select="iso_media"
3254 mpegts_muxer_select="adts_muxer latm_muxer"
3255 mpegtsraw_demuxer_select="mpegts_demuxer"
3256 mxf_d10_muxer_select="mxf_muxer"
3257 mxf_opatom_muxer_select="mxf_muxer"
3258 nut_muxer_select="riffenc"
3259 nuv_demuxer_select="riffdec"
3260 oga_muxer_select="ogg_muxer"
3261 ogg_demuxer_select="dirac_parse"
3262 ogv_muxer_select="ogg_muxer"
3263 opus_muxer_select="ogg_muxer"
3264 psp_muxer_select="mov_muxer"
3265 rtp_demuxer_select="sdp_demuxer"
3266 rtp_muxer_select="golomb"
3267 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3268 rtsp_demuxer_select="http_protocol rtpdec"
3269 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3270 sap_demuxer_select="sdp_demuxer"
3271 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3272 sdp_demuxer_select="rtpdec"
3273 smoothstreaming_muxer_select="ismv_muxer"
3274 spdif_demuxer_select="adts_header"
3275 spdif_muxer_select="adts_header"
3276 spx_muxer_select="ogg_muxer"
3277 swf_demuxer_suggest="zlib"
3278 tak_demuxer_select="tak_parser"
3279 tg2_muxer_select="mov_muxer"
3280 tgp_muxer_select="mov_muxer"
3281 vobsub_demuxer_select="mpegps_demuxer"
3282 w64_demuxer_select="wav_demuxer"
3283 w64_muxer_select="wav_muxer"
3284 wav_demuxer_select="riffdec"
3285 wav_muxer_select="riffenc"
3286 webm_muxer_select="iso_media riffenc"
3287 webm_dash_manifest_demuxer_select="matroska_demuxer"
3288 wtv_demuxer_select="mpegts_demuxer riffdec"
3289 wtv_muxer_select="mpegts_muxer riffenc"
3290 xmv_demuxer_select="riffdec"
3291 xwma_demuxer_select="riffdec"
3292
3293 # indevs / outdevs
3294 android_camera_indev_deps="android camera2ndk mediandk pthreads"
3295 android_camera_indev_extralibs="-landroid -lcamera2ndk -lmediandk"
3296 alsa_indev_deps="alsa"
3297 alsa_outdev_deps="alsa"
3298 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3299 avfoundation_indev_suggest="coregraphics applicationservices"
3300 avfoundation_indev_extralibs="-framework Foundation"
3301 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3302 caca_outdev_deps="libcaca"
3303 decklink_deps_any="libdl LoadLibrary"
3304 decklink_indev_deps="decklink threads"
3305 decklink_indev_extralibs="-lstdc++"
3306 decklink_outdev_deps="decklink threads"
3307 decklink_outdev_suggest="libklvanc"
3308 decklink_outdev_extralibs="-lstdc++"
3309 dshow_indev_deps="IBaseFilter"
3310 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3311 fbdev_indev_deps="linux_fb_h"
3312 fbdev_outdev_deps="linux_fb_h"
3313 gdigrab_indev_deps="CreateDIBSection"
3314 gdigrab_indev_extralibs="-lgdi32"
3315 gdigrab_indev_select="bmp_decoder"
3316 iec61883_indev_deps="libiec61883"
3317 jack_indev_deps="libjack"
3318 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3319 kmsgrab_indev_deps="libdrm"
3320 lavfi_indev_deps="avfilter"
3321 libcdio_indev_deps="libcdio"
3322 libdc1394_indev_deps="libdc1394"
3323 openal_indev_deps="openal"
3324 opengl_outdev_deps="opengl"
3325 opengl_outdev_suggest="sdl2"
3326 oss_indev_deps_any="sys_soundcard_h"
3327 oss_outdev_deps_any="sys_soundcard_h"
3328 pulse_indev_deps="libpulse"
3329 pulse_outdev_deps="libpulse"
3330 sdl2_outdev_deps="sdl2"
3331 sndio_indev_deps="sndio"
3332 sndio_outdev_deps="sndio"
3333 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3334 v4l2_indev_suggest="libv4l2"
3335 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3336 v4l2_outdev_suggest="libv4l2"
3337 vfwcap_indev_deps="vfw32 vfwcap_defines"
3338 xcbgrab_indev_deps="libxcb"
3339 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3340 xv_outdev_deps="xlib"
3341
3342 # protocols
3343 async_protocol_deps="threads"
3344 bluray_protocol_deps="libbluray"
3345 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3346 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl mbedtls"
3347 ffrtmpcrypt_protocol_select="tcp_protocol"
3348 ffrtmphttp_protocol_conflict="librtmp_protocol"
3349 ffrtmphttp_protocol_select="http_protocol"
3350 ftp_protocol_select="tcp_protocol"
3351 gopher_protocol_select="network"
3352 http_protocol_select="tcp_protocol"
3353 http_protocol_suggest="zlib"
3354 httpproxy_protocol_select="tcp_protocol"
3355 httpproxy_protocol_suggest="zlib"
3356 https_protocol_select="tls_protocol"
3357 https_protocol_suggest="zlib"
3358 icecast_protocol_select="http_protocol"
3359 mmsh_protocol_select="http_protocol"
3360 mmst_protocol_select="network"
3361 rtmp_protocol_conflict="librtmp_protocol"
3362 rtmp_protocol_select="tcp_protocol"
3363 rtmp_protocol_suggest="zlib"
3364 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3365 rtmpe_protocol_suggest="zlib"
3366 rtmps_protocol_conflict="librtmp_protocol"
3367 rtmps_protocol_select="tls_protocol"
3368 rtmps_protocol_suggest="zlib"
3369 rtmpt_protocol_select="ffrtmphttp_protocol"
3370 rtmpt_protocol_suggest="zlib"
3371 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3372 rtmpte_protocol_suggest="zlib"
3373 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3374 rtmpts_protocol_suggest="zlib"
3375 rtp_protocol_select="udp_protocol"
3376 schannel_conflict="openssl gnutls libtls mbedtls"
3377 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3378 sctp_protocol_select="network"
3379 securetransport_conflict="openssl gnutls libtls mbedtls"
3380 srtp_protocol_select="rtp_protocol srtp"
3381 tcp_protocol_select="network"
3382 tls_protocol_deps_any="gnutls openssl schannel securetransport libtls mbedtls"
3383 tls_protocol_select="tcp_protocol"
3384 udp_protocol_select="network"
3385 udplite_protocol_select="network"
3386 unix_protocol_deps="sys_un_h"
3387 unix_protocol_select="network"
3388
3389 # external library protocols
3390 librtmp_protocol_deps="librtmp"
3391 librtmpe_protocol_deps="librtmp"
3392 librtmps_protocol_deps="librtmp"
3393 librtmpt_protocol_deps="librtmp"
3394 librtmpte_protocol_deps="librtmp"
3395 libsmbclient_protocol_deps="libsmbclient gplv3"
3396 libsrt_protocol_deps="libsrt"
3397 libsrt_protocol_select="network"
3398 libssh_protocol_deps="libssh"
3399 libtls_conflict="openssl gnutls mbedtls"
3400
3401 # filters
3402 afftdn_filter_deps="avcodec"
3403 afftdn_filter_select="fft"
3404 afftfilt_filter_deps="avcodec"
3405 afftfilt_filter_select="fft"
3406 afir_filter_deps="avcodec"
3407 afir_filter_select="fft"
3408 amovie_filter_deps="avcodec avformat"
3409 aresample_filter_deps="swresample"
3410 asr_filter_deps="pocketsphinx"
3411 ass_filter_deps="libass"
3412 atempo_filter_deps="avcodec"
3413 atempo_filter_select="rdft"
3414 avgblur_opencl_filter_deps="opencl"
3415 azmq_filter_deps="libzmq"
3416 blackframe_filter_deps="gpl"
3417 bm3d_filter_deps="avcodec"
3418 bm3d_filter_select="dct"
3419 boxblur_filter_deps="gpl"
3420 boxblur_opencl_filter_deps="opencl gpl"
3421 bs2b_filter_deps="libbs2b"
3422 colorkey_opencl_filter_deps="opencl"
3423 colormatrix_filter_deps="gpl"
3424 convolution_opencl_filter_deps="opencl"
3425 convolve_filter_deps="avcodec"
3426 convolve_filter_select="fft"
3427 coreimage_filter_deps="coreimage appkit"
3428 coreimage_filter_extralibs="-framework OpenGL"
3429 coreimagesrc_filter_deps="coreimage appkit"
3430 coreimagesrc_filter_extralibs="-framework OpenGL"
3431 cover_rect_filter_deps="avcodec avformat gpl"
3432 cropdetect_filter_deps="gpl"
3433 deconvolve_filter_deps="avcodec"
3434 deconvolve_filter_select="fft"
3435 deinterlace_qsv_filter_deps="libmfx"
3436 deinterlace_vaapi_filter_deps="vaapi"
3437 delogo_filter_deps="gpl"
3438 denoise_vaapi_filter_deps="vaapi"
3439 deshake_filter_select="pixelutils"
3440 dilation_opencl_filter_deps="opencl"
3441 drawtext_filter_deps="libfreetype"
3442 drawtext_filter_suggest="libfontconfig libfribidi"
3443 elbg_filter_deps="avcodec"
3444 eq_filter_deps="gpl"
3445 erosion_opencl_filter_deps="opencl"
3446 fftfilt_filter_deps="avcodec"
3447 fftfilt_filter_select="rdft"
3448 fftdnoiz_filter_deps="avcodec"
3449 fftdnoiz_filter_select="fft"
3450 find_rect_filter_deps="avcodec avformat gpl"
3451 firequalizer_filter_deps="avcodec"
3452 firequalizer_filter_select="rdft"
3453 flite_filter_deps="libflite"
3454 framerate_filter_select="scene_sad"
3455 freezedetect_filter_select="scene_sad"
3456 frei0r_filter_deps="frei0r libdl"
3457 frei0r_src_filter_deps="frei0r libdl"
3458 fspp_filter_deps="gpl"
3459 geq_filter_deps="gpl"
3460 histeq_filter_deps="gpl"
3461 hqdn3d_filter_deps="gpl"
3462 interlace_filter_deps="gpl"
3463 kerndeint_filter_deps="gpl"
3464 ladspa_filter_deps="ladspa libdl"
3465 lensfun_filter_deps="liblensfun version3"
3466 lv2_filter_deps="lv2"
3467 mcdeint_filter_deps="avcodec gpl"
3468 movie_filter_deps="avcodec avformat"
3469 mpdecimate_filter_deps="gpl"
3470 mpdecimate_filter_select="pixelutils"
3471 minterpolate_filter_select="scene_sad"
3472 mptestsrc_filter_deps="gpl"
3473 negate_filter_deps="lut_filter"
3474 nlmeans_opencl_filter_deps="opencl"
3475 nnedi_filter_deps="gpl"
3476 ocr_filter_deps="libtesseract"
3477 ocv_filter_deps="libopencv"
3478 openclsrc_filter_deps="opencl"
3479 overlay_opencl_filter_deps="opencl"
3480 overlay_qsv_filter_deps="libmfx"
3481 overlay_qsv_filter_select="qsvvpp"
3482 owdenoise_filter_deps="gpl"
3483 pan_filter_deps="swresample"
3484 perspective_filter_deps="gpl"
3485 phase_filter_deps="gpl"
3486 pp7_filter_deps="gpl"
3487 pp_filter_deps="gpl postproc"
3488 prewitt_opencl_filter_deps="opencl"
3489 procamp_vaapi_filter_deps="vaapi"
3490 program_opencl_filter_deps="opencl"
3491 pullup_filter_deps="gpl"
3492 removelogo_filter_deps="avcodec avformat swscale"
3493 repeatfields_filter_deps="gpl"
3494 resample_filter_deps="avresample"
3495 roberts_opencl_filter_deps="opencl"
3496 rubberband_filter_deps="librubberband"
3497 sab_filter_deps="gpl swscale"
3498 scale2ref_filter_deps="swscale"
3499 scale_filter_deps="swscale"
3500 scale_qsv_filter_deps="libmfx"
3501 select_filter_select="scene_sad"
3502 sharpness_vaapi_filter_deps="vaapi"
3503 showcqt_filter_deps="avcodec avformat swscale"
3504 showcqt_filter_suggest="libfontconfig libfreetype"
3505 showcqt_filter_select="fft"
3506 showfreqs_filter_deps="avcodec"
3507 showfreqs_filter_select="fft"
3508 showspectrum_filter_deps="avcodec"
3509 showspectrum_filter_select="fft"
3510 showspectrumpic_filter_deps="avcodec"
3511 showspectrumpic_filter_select="fft"
3512 signature_filter_deps="gpl avcodec avformat"
3513 smartblur_filter_deps="gpl swscale"
3514 sobel_opencl_filter_deps="opencl"
3515 sofalizer_filter_deps="libmysofa avcodec"
3516 sofalizer_filter_select="fft"
3517 spectrumsynth_filter_deps="avcodec"
3518 spectrumsynth_filter_select="fft"
3519 spp_filter_deps="gpl avcodec"
3520 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3521 sr_filter_deps="avformat swscale"
3522 sr_filter_select="dnn"
3523 stereo3d_filter_deps="gpl"
3524 subtitles_filter_deps="avformat avcodec libass"
3525 super2xsai_filter_deps="gpl"
3526 pixfmts_super2xsai_test_deps="super2xsai_filter"
3527 tinterlace_filter_deps="gpl"
3528 tinterlace_merge_test_deps="tinterlace_filter"
3529 tinterlace_pad_test_deps="tinterlace_filter"
3530 tonemap_filter_deps="const_nan"
3531 tonemap_opencl_filter_deps="opencl const_nan"
3532 transpose_opencl_filter_deps="opencl"
3533 transpose_vaapi_filter_deps="vaapi VAProcPipelineCaps_rotation_flags"
3534 unsharp_opencl_filter_deps="opencl"
3535 uspp_filter_deps="gpl avcodec"
3536 vaguedenoiser_filter_deps="gpl"
3537 vidstabdetect_filter_deps="libvidstab"
3538 vidstabtransform_filter_deps="libvidstab"
3539 libvmaf_filter_deps="libvmaf pthreads"
3540 zmq_filter_deps="libzmq"
3541 zoompan_filter_deps="swscale"
3542 zscale_filter_deps="libzimg const_nan"
3543 scale_vaapi_filter_deps="vaapi"
3544 vpp_qsv_filter_deps="libmfx"
3545 vpp_qsv_filter_select="qsvvpp"
3546 yadif_cuda_filter_deps="ffnvcodec cuda_nvcc"
3547
3548 # examples
3549 avio_dir_cmd_deps="avformat avutil"
3550 avio_reading_deps="avformat avcodec avutil"
3551 decode_audio_example_deps="avcodec avutil"
3552 decode_video_example_deps="avcodec avutil"
3553 demuxing_decoding_example_deps="avcodec avformat avutil"
3554 encode_audio_example_deps="avcodec avutil"
3555 encode_video_example_deps="avcodec avutil"
3556 extract_mvs_example_deps="avcodec avformat avutil"
3557 filter_audio_example_deps="avfilter avutil"
3558 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3559 filtering_video_example_deps="avfilter avcodec avformat avutil"
3560 http_multiclient_example_deps="avformat avutil fork"
3561 hw_decode_example_deps="avcodec avformat avutil"
3562 metadata_example_deps="avformat avutil"
3563 muxing_example_deps="avcodec avformat avutil swscale"
3564 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3565 remuxing_example_deps="avcodec avformat avutil"
3566 resampling_audio_example_deps="avutil swresample"
3567 scaling_video_example_deps="avutil swscale"
3568 transcode_aac_example_deps="avcodec avformat swresample"
3569 transcoding_example_deps="avfilter avcodec avformat avutil"
3570 vaapi_encode_example_deps="avcodec avutil h264_vaapi_encoder"
3571 vaapi_transcode_example_deps="avcodec avformat avutil h264_vaapi_encoder"
3572
3573 # EXTRALIBS_LIST
3574 cpu_init_extralibs="pthreads_extralibs"
3575 cws2fws_extralibs="zlib_extralibs"
3576
3577 # libraries, in any order
3578 avcodec_deps="avutil"
3579 avcodec_suggest="libm"
3580 avcodec_select="null_bsf"
3581 avdevice_deps="avformat avcodec avutil"
3582 avdevice_suggest="libm"
3583 avfilter_deps="avutil"
3584 avfilter_suggest="libm"
3585 avformat_deps="avcodec avutil"
3586 avformat_suggest="libm network zlib"
3587 avresample_deps="avutil"
3588 avresample_suggest="libm"
3589 avutil_suggest="clock_gettime ffnvcodec libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia bcrypt"
3590 postproc_deps="avutil gpl"
3591 postproc_suggest="libm"
3592 swresample_deps="avutil"
3593 swresample_suggest="libm libsoxr"
3594 swscale_deps="avutil"
3595 swscale_suggest="libm"
3596
3597 avcodec_extralibs="pthreads_extralibs iconv_extralibs dxva2_extralibs"
3598 avfilter_extralibs="pthreads_extralibs"
3599 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3600
3601 # programs
3602 ffmpeg_deps="avcodec avfilter avformat"
3603 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3604                hflip_filter null_filter
3605                transpose_filter trim_filter vflip_filter"
3606 ffmpeg_suggest="ole32 psapi shell32"
3607 ffplay_deps="avcodec avformat swscale swresample sdl2"
3608 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3609 ffplay_suggest="shell32"
3610 ffprobe_deps="avcodec avformat"
3611 ffprobe_suggest="shell32"
3612
3613 # documentation
3614 podpages_deps="perl"
3615 manpages_deps="perl pod2man"
3616 htmlpages_deps="perl"
3617 htmlpages_deps_any="makeinfo_html texi2html"
3618 txtpages_deps="perl makeinfo"
3619 doc_deps_any="manpages htmlpages podpages txtpages"
3620
3621 # default parameters
3622
3623 logfile="ffbuild/config.log"
3624
3625 # installation paths
3626 prefix_default="/usr/local"
3627 bindir_default='${prefix}/bin'
3628 datadir_default='${prefix}/share/ffmpeg'
3629 docdir_default='${prefix}/share/doc/ffmpeg'
3630 incdir_default='${prefix}/include'
3631 libdir_default='${prefix}/lib'
3632 mandir_default='${prefix}/share/man'
3633
3634 # toolchain
3635 ar_default="ar"
3636 cc_default="gcc"
3637 cxx_default="g++"
3638 host_cc_default="gcc"
3639 doxygen_default="doxygen"
3640 install="install"
3641 ln_s_default="ln -s -f"
3642 nm_default="nm -g"
3643 pkg_config_default=pkg-config
3644 ranlib_default="ranlib"
3645 strip_default="strip"
3646 version_script='--version-script'
3647 objformat="elf32"
3648 x86asmexe_default="nasm"
3649 windres_default="windres"
3650 nvcc_default="nvcc"
3651 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3652 striptype="direct"
3653
3654 # OS
3655 target_os_default=$(tolower $(uname -s))
3656 host_os=$target_os_default
3657
3658 # machine
3659 if test "$target_os_default" = aix; then
3660     arch_default=$(uname -p)
3661     strip_default="strip -X32_64"
3662     nm_default="nm -g -X32_64"
3663 else
3664     arch_default=$(uname -m)
3665 fi
3666 cpu="generic"
3667 intrinsics="none"
3668
3669 # configurable options
3670 enable $PROGRAM_LIST
3671 enable $DOCUMENT_LIST
3672 enable $EXAMPLE_LIST
3673 enable $(filter_out avresample $LIBRARY_LIST)
3674 enable stripping
3675
3676 enable asm
3677 enable debug
3678 enable doc
3679 enable faan faandct faanidct
3680 enable optimizations
3681 enable runtime_cpudetect
3682 enable safe_bitstream_reader
3683 enable static
3684 enable swscale_alpha
3685 enable valgrind_backtrace
3686
3687 sws_max_filter_size_default=256
3688 set_default sws_max_filter_size
3689
3690 # internal components are enabled by default
3691 enable $EXTRALIBS_LIST
3692
3693 # Avoid external, non-system, libraries getting enabled by dependency resolution
3694 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3695
3696 # build settings
3697 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3698 LIBPREF="lib"
3699 LIBSUF=".a"
3700 FULLNAME='$(NAME)$(BUILDSUF)'
3701 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3702 SLIBPREF="lib"
3703 SLIBSUF=".so"
3704 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3705 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3706 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3707 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3708 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3709 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3710 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3711
3712 asflags_filter=echo
3713 cflags_filter=echo
3714 ldflags_filter=echo
3715
3716 AS_C='-c'
3717 AS_O='-o $@'
3718 CC_C='-c'
3719 CC_E='-E -o $@'
3720 CC_O='-o $@'
3721 CXX_C='-c'
3722 CXX_O='-o $@'
3723 OBJCC_C='-c'
3724 OBJCC_E='-E -o $@'
3725 OBJCC_O='-o $@'
3726 X86ASM_O='-o $@'
3727 LD_O='-o $@'
3728 LD_LIB='-l%'
3729 LD_PATH='-L'
3730 HOSTCC_C='-c'
3731 HOSTCC_E='-E -o $@'
3732 HOSTCC_O='-o $@'
3733 HOSTLD_O='-o $@'
3734 NVCC_C='-c'
3735 NVCC_O='-o $@'
3736
3737 host_extralibs='-lm'
3738 host_cflags_filter=echo
3739 host_ldflags_filter=echo
3740
3741 target_path='$(CURDIR)'
3742
3743 # since the object filename is not given with the -MM flag, the compiler
3744 # is only able to print the basename, and we must add the path ourselves
3745 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3746 DEPFLAGS='-MM'
3747
3748 mkdir -p ffbuild
3749
3750 # find source path
3751 if test -f configure; then
3752     source_path=.
3753 elif test -f src/configure; then
3754     source_path=src
3755 else
3756     source_path=$(cd $(dirname "$0"); pwd)
3757     case "$source_path" in
3758         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3759     esac
3760     test -e "$source_path/config.h" &&
3761         die "Out of tree builds are impossible with config.h in source dir."
3762 fi
3763
3764 for v in "$@"; do
3765     r=${v#*=}
3766     l=${v%"$r"}
3767     r=$(sh_quote "$r")
3768     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3769 done
3770
3771 find_things_extern(){
3772     thing=$1
3773     pattern=$2
3774     file=$source_path/$3
3775     out=${4:-$thing}
3776     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$out/p" "$file"
3777 }
3778
3779 find_filters_extern(){
3780     file=$source_path/$1
3781     sed -n 's/^extern AVFilter ff_[avfsinkrc]\{2,5\}_\([[:alnum:]_]\{1,\}\);/\1_filter/p' $file
3782 }
3783
3784 FILTER_LIST=$(find_filters_extern libavfilter/allfilters.c)
3785 OUTDEV_LIST=$(find_things_extern muxer AVOutputFormat libavdevice/alldevices.c outdev)
3786 INDEV_LIST=$(find_things_extern demuxer AVInputFormat libavdevice/alldevices.c indev)
3787 MUXER_LIST=$(find_things_extern muxer AVOutputFormat libavformat/allformats.c)
3788 DEMUXER_LIST=$(find_things_extern demuxer AVInputFormat libavformat/allformats.c)
3789 ENCODER_LIST=$(find_things_extern encoder AVCodec libavcodec/allcodecs.c)
3790 DECODER_LIST=$(find_things_extern decoder AVCodec libavcodec/allcodecs.c)
3791 CODEC_LIST="
3792     $ENCODER_LIST
3793     $DECODER_LIST
3794 "
3795 PARSER_LIST=$(find_things_extern parser AVCodecParser libavcodec/parsers.c)
3796 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3797 HWACCEL_LIST=$(find_things_extern hwaccel AVHWAccel libavcodec/hwaccels.h)
3798 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3799
3800 AVCODEC_COMPONENTS_LIST="
3801     $BSF_LIST
3802     $DECODER_LIST
3803     $ENCODER_LIST
3804     $HWACCEL_LIST
3805     $PARSER_LIST
3806 "
3807
3808 AVDEVICE_COMPONENTS_LIST="
3809     $INDEV_LIST
3810     $OUTDEV_LIST
3811 "
3812
3813 AVFILTER_COMPONENTS_LIST="
3814     $FILTER_LIST
3815 "
3816
3817 AVFORMAT_COMPONENTS_LIST="
3818     $DEMUXER_LIST
3819     $MUXER_LIST
3820     $PROTOCOL_LIST
3821 "
3822
3823 ALL_COMPONENTS="
3824     $AVCODEC_COMPONENTS_LIST
3825     $AVDEVICE_COMPONENTS_LIST
3826     $AVFILTER_COMPONENTS_LIST
3827     $AVFORMAT_COMPONENTS_LIST
3828 "
3829
3830 for n in $COMPONENT_LIST; do
3831     v=$(toupper ${n%s})_LIST
3832     eval enable \$$v
3833     eval ${n}_if_any="\$$v"
3834 done
3835
3836 enable $ARCH_EXT_LIST
3837
3838 die_unknown(){
3839     echo "Unknown option \"$1\"."
3840     echo "See $0 --help for available options."
3841     exit 1
3842 }
3843
3844 print_in_columns() {
3845     cols=$(expr $ncols / 24)
3846     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3847 }
3848
3849 show_list() {
3850     suffix=_$1
3851     shift
3852     echo $* | sed s/$suffix//g | print_in_columns
3853     exit 0
3854 }
3855
3856 rand_list(){
3857     IFS=', '
3858     set -- $*
3859     unset IFS
3860     for thing; do
3861         comp=${thing%:*}
3862         prob=${thing#$comp}
3863         prob=${prob#:}
3864         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3865         echo "prob ${prob:-0.5}"
3866         printf '%s\n' $comp
3867     done
3868 }
3869
3870 do_random(){
3871     action=$1
3872     shift
3873     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3874     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3875 }
3876
3877 for opt do
3878     optval="${opt#*=}"
3879     case "$opt" in
3880         --extra-ldflags=*)
3881             add_ldflags $optval
3882         ;;
3883         --extra-ldexeflags=*)
3884             add_ldexeflags $optval
3885         ;;
3886         --extra-ldsoflags=*)
3887             add_ldsoflags $optval
3888         ;;
3889         --extra-ldlibflags=*)
3890             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3891                  "removed in the future. Use --extra-ldsoflags instead."
3892             add_ldsoflags $optval
3893         ;;
3894         --extra-libs=*)
3895             add_extralibs $optval
3896         ;;
3897         --disable-devices)
3898             disable $INDEV_LIST $OUTDEV_LIST
3899         ;;
3900         --enable-debug=*)
3901             debuglevel="$optval"
3902         ;;
3903         --disable-programs)
3904             disable $PROGRAM_LIST
3905         ;;
3906         --disable-everything)
3907             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3908         ;;
3909         --disable-all)
3910             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3911             disable $LIBRARY_LIST $PROGRAM_LIST doc
3912             enable avutil
3913         ;;
3914         --enable-random|--disable-random)
3915             action=${opt%%-random}
3916             do_random ${action#--} $COMPONENT_LIST
3917         ;;
3918         --enable-random=*|--disable-random=*)
3919             action=${opt%%-random=*}
3920             do_random ${action#--} $optval
3921         ;;
3922         --enable-sdl)
3923             enable sdl2
3924         ;;
3925         --enable-*=*|--disable-*=*)
3926             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3927             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3928             eval list=\$$(toupper $thing)_LIST
3929             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3930             list=$(filter "$name" $list)
3931             [ "$list" = "" ] && warn "Option $opt did not match anything"
3932             test $action = enable && warn_if_gets_disabled $list
3933             $action $list
3934         ;;
3935         --enable-yasm|--disable-yasm)
3936             warn "The ${opt} option is only provided for compatibility and will be\n"\
3937                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3938             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3939         ;;
3940         --yasmexe=*)
3941             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3942                  "removed in the future. Use --x86asmexe instead."
3943             x86asmexe="$optval"
3944         ;;
3945         --enable-?*|--disable-?*)
3946             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3947             if is_in $option $COMPONENT_LIST; then
3948                 test $action = disable && action=unset
3949                 eval $action \$$(toupper ${option%s})_LIST
3950             elif is_in $option $CMDLINE_SELECT; then
3951                 $action $option
3952             else
3953                 die_unknown $opt
3954             fi
3955         ;;
3956         --list-*)
3957             NAME="${opt#--list-}"
3958             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3959             NAME=${NAME%s}
3960             eval show_list $NAME \$$(toupper $NAME)_LIST
3961         ;;
3962         --help|-h) show_help
3963         ;;
3964         --quiet|-q) quiet=yes
3965         ;;
3966         --fatal-warnings) enable fatal_warnings
3967         ;;
3968         --libfuzzer=*)
3969             libfuzzer_path="$optval"
3970         ;;
3971         *)
3972             optname="${opt%%=*}"
3973             optname="${optname#--}"
3974             optname=$(echo "$optname" | sed 's/-/_/g')
3975             if is_in $optname $CMDLINE_SET; then
3976                 eval $optname='$optval'
3977             elif is_in $optname $CMDLINE_APPEND; then
3978                 append $optname "$optval"
3979             else
3980                 die_unknown $opt
3981             fi
3982         ;;
3983     esac
3984 done
3985
3986 for e in $env; do
3987     eval "export $e"
3988 done
3989
3990 if disabled autodetect; then
3991
3992     # Unless iconv is explicitely disabled by the user, we still want to probe
3993     # for the iconv from the libc.
3994     disabled iconv || enable libc_iconv
3995
3996     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3997     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3998 fi
3999 # Mark specifically enabled, but normally autodetected libraries as requested.
4000 for lib in $AUTODETECT_LIBS; do
4001     enabled $lib && request $lib
4002 done
4003 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
4004 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
4005 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
4006
4007 disabled logging && logfile=/dev/null
4008
4009 # command line configuration sanity checks
4010
4011 # we need to build at least one lib type
4012 if ! enabled_any static shared; then
4013     cat <<EOF
4014 At least one library type must be built.
4015 Specify --enable-static to build the static libraries or --enable-shared to
4016 build the shared libraries as well. To only build the shared libraries specify
4017 --disable-static in addition to --enable-shared.
4018 EOF
4019     exit 1
4020 fi
4021
4022 die_license_disabled() {
4023     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
4024 }
4025
4026 die_license_disabled_gpl() {
4027     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
4028 }
4029
4030 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
4031 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
4032
4033 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
4034 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
4035
4036 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4037
4038 if enabled nonfree; then
4039     license="nonfree and unredistributable"
4040 elif enabled gplv3; then
4041     license="GPL version 3 or later"
4042 elif enabled lgplv3; then
4043     license="LGPL version 3 or later"
4044 elif enabled gpl; then
4045     license="GPL version 2 or later"
4046 else
4047     license="LGPL version 2.1 or later"
4048 fi
4049
4050 enabled_all gnutls openssl &&
4051     die "GnuTLS and OpenSSL must not be enabled at the same time."
4052
4053 enabled_all gnutls mbedtls &&
4054     die "GnuTLS and mbedTLS must not be enabled at the same time."
4055
4056 enabled_all openssl mbedtls &&
4057     die "OpenSSL and mbedTLS must not be enabled at the same time."
4058
4059 # Disable all the library-specific components if the library itself
4060 # is disabled, see AVCODEC_LIST and following _LIST variables.
4061
4062 disable_components(){
4063     disabled ${1} && disable $(
4064         eval components="\$$(toupper ${1})_COMPONENTS"
4065         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
4066     )
4067 }
4068
4069 map 'disable_components $v' $LIBRARY_LIST
4070
4071 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
4072 set >> $logfile
4073
4074 test -n "$valgrind" && toolchain="valgrind-memcheck"
4075
4076 enabled ossfuzz && ! echo $CFLAGS | grep -q -- "-fsanitize="  && ! echo $CFLAGS | grep -q -- "-fcoverage-mapping" &&{
4077     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
4078     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
4079 }
4080
4081 case "$toolchain" in
4082     *-asan)
4083         cc_default="${toolchain%-asan}"
4084         add_cflags  -fsanitize=address
4085         add_ldflags -fsanitize=address
4086     ;;
4087     *-msan)
4088         cc_default="${toolchain%-msan}"
4089         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
4090         add_ldflags -fsanitize=memory
4091     ;;
4092     *-tsan)
4093         cc_default="${toolchain%-tsan}"
4094         add_cflags  -fsanitize=thread
4095         add_ldflags -fsanitize=thread
4096         case "$toolchain" in
4097             gcc-tsan)
4098                 add_cflags  -fPIC
4099                 add_ldflags -fPIC
4100                 ;;
4101         esac
4102     ;;
4103     *-usan)
4104         cc_default="${toolchain%-usan}"
4105         add_cflags  -fsanitize=undefined
4106         add_ldflags -fsanitize=undefined
4107     ;;
4108     valgrind-*)
4109         target_exec_default="valgrind"
4110         case "$toolchain" in
4111             valgrind-massif)
4112                 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"
4113                 ;;
4114             valgrind-memcheck)
4115                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
4116                 ;;
4117         esac
4118     ;;
4119     msvc)
4120         # Check whether the current MSVC version needs the C99 converter.
4121         # From MSVC 2013 (compiler major version 18) onwards, it does actually
4122         # support enough of C99 to build ffmpeg. Default to the new
4123         # behaviour if the regexp was unable to match anything, since this
4124         # successfully parses the version number of existing supported
4125         # versions that require the converter (MSVC 2010 and 2012).
4126         cl_major_ver=$(cl.exe 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
4127         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
4128             cc_default="cl.exe"
4129             cxx_default="cl.exe"
4130         else
4131             die "Unsupported MSVC version (2013 or newer required)"
4132         fi
4133         ld_default="$source_path/compat/windows/mslink"
4134         nm_default="dumpbin.exe -symbols"
4135         ar_default="lib.exe"
4136         case "$arch" in
4137         aarch64|arm64)
4138             as_default="armasm64.exe"
4139             ;;
4140         arm*)
4141             as_default="armasm.exe"
4142             ;;
4143         esac
4144         target_os_default="win32"
4145         # Use a relative path for TMPDIR. This makes sure all the
4146         # ffconf temp files are written with a relative path, avoiding
4147         # issues with msys/win32 path conversion for MSVC parameters
4148         # such as -Fo<file> or -out:<file>.
4149         TMPDIR=.
4150     ;;
4151     icl)
4152         cc_default="icl"
4153         ld_default="xilink"
4154         nm_default="dumpbin -symbols"
4155         ar_default="xilib"
4156         target_os_default="win32"
4157         TMPDIR=.
4158     ;;
4159     gcov)
4160         add_cflags  -fprofile-arcs -ftest-coverage
4161         add_ldflags -fprofile-arcs -ftest-coverage
4162     ;;
4163     llvm-cov)
4164         add_cflags -fprofile-arcs -ftest-coverage
4165         add_ldflags --coverage
4166     ;;
4167     hardened)
4168         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
4169         add_cflags   -fno-strict-overflow -fstack-protector-all
4170         add_ldflags  -Wl,-z,relro -Wl,-z,now
4171         add_cflags   -fPIE
4172         add_ldexeflags -fPIE -pie
4173     ;;
4174     ?*)
4175         die "Unknown toolchain $toolchain"
4176     ;;
4177 esac
4178
4179 if test -n "$cross_prefix"; then
4180     test -n "$arch" && test -n "$target_os" ||
4181         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
4182     enable cross_compile
4183 fi
4184
4185 set_default target_os
4186 if test "$target_os" = android; then
4187     cc_default="clang"
4188 fi
4189
4190 ar_default="${cross_prefix}${ar_default}"
4191 cc_default="${cross_prefix}${cc_default}"
4192 cxx_default="${cross_prefix}${cxx_default}"
4193 nm_default="${cross_prefix}${nm_default}"
4194 pkg_config_default="${cross_prefix}${pkg_config_default}"
4195 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
4196     ranlib_default="${cross_prefix}${ranlib_default} -D"
4197 else
4198     ranlib_default="${cross_prefix}${ranlib_default}"
4199 fi
4200 strip_default="${cross_prefix}${strip_default}"
4201 windres_default="${cross_prefix}${windres_default}"
4202
4203 sysinclude_default="${sysroot}/usr/include"
4204
4205 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
4206     target_exec x86asmexe nvcc
4207 enabled cross_compile || host_cc_default=$cc
4208 set_default host_cc
4209
4210 pkg_config_fail_message=""
4211 if ! $pkg_config --version >/dev/null 2>&1; then
4212     warn "$pkg_config not found, library detection may fail."
4213     pkg_config=false
4214 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
4215     pkg_config_fail_message="
4216 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
4217 fi
4218
4219 if test $doxygen != $doxygen_default && \
4220   ! $doxygen --version >/dev/null 2>&1; then
4221     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
4222 fi
4223
4224 exesuf() {
4225     case $1 in
4226         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
4227     esac
4228 }
4229
4230 EXESUF=$(exesuf $target_os)
4231 HOSTEXESUF=$(exesuf $host_os)
4232
4233 # set temporary file name
4234 : ${TMPDIR:=$TEMPDIR}
4235 : ${TMPDIR:=$TMP}
4236 : ${TMPDIR:=/tmp}
4237
4238 if [ -n "$tempprefix" ] ; then
4239     mktemp(){
4240         tmpname="$tempprefix.${HOSTNAME}.${UID}"
4241         echo "$tmpname"
4242         mkdir "$tmpname"
4243     }
4244 elif ! test_cmd mktemp -u XXXXXX; then
4245     # simple replacement for missing mktemp
4246     # NOT SAFE FOR GENERAL USE
4247     mktemp(){
4248         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
4249         echo "$tmpname"
4250         mkdir "$tmpname"
4251     }
4252 fi
4253
4254 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
4255     die "Unable to create temporary directory in $TMPDIR."
4256
4257 tmpfile(){
4258     tmp="${FFTMPDIR}/test"$2
4259     (set -C; exec > $tmp) 2> /dev/null ||
4260         die "Unable to create temporary file in $FFTMPDIR."
4261     eval $1=$tmp
4262 }
4263
4264 trap 'rm -rf -- "$FFTMPDIR"' EXIT
4265 trap 'exit 2' INT
4266
4267 tmpfile TMPASM .asm
4268 tmpfile TMPC   .c
4269 tmpfile TMPCPP .cpp
4270 tmpfile TMPE   $EXESUF
4271 tmpfile TMPH   .h
4272 tmpfile TMPM   .m
4273 tmpfile TMPCU  .cu
4274 tmpfile TMPO   .o
4275 tmpfile TMPS   .S
4276 tmpfile TMPSH  .sh
4277 tmpfile TMPV   .ver
4278
4279 unset -f mktemp
4280
4281 chmod +x $TMPE
4282
4283 # make sure we can execute files in $TMPDIR
4284 cat > $TMPSH 2>> $logfile <<EOF
4285 #! /bin/sh
4286 EOF
4287 chmod +x $TMPSH >> $logfile 2>&1
4288 if ! $TMPSH >> $logfile 2>&1; then
4289     cat <<EOF
4290 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
4291 variable to another directory and make sure that it is not mounted noexec.
4292 EOF
4293     die "Sanity test failed."
4294 fi
4295
4296 armasm_flags(){
4297     for flag; do
4298         case $flag in
4299             # Filter out MSVC cl.exe options from cflags that shouldn't
4300             # be passed to gas-preprocessor
4301             -M[TD]*)                                            ;;
4302             *)                  echo $flag                      ;;
4303         esac
4304    done
4305 }
4306
4307 cparser_flags(){
4308     for flag; do
4309         case $flag in
4310             -Wno-switch)             echo -Wno-switch-enum ;;
4311             -Wno-format-zero-length) ;;
4312             -Wdisabled-optimization) ;;
4313             -Wno-pointer-sign)       echo -Wno-other ;;
4314             *)                       echo $flag ;;
4315         esac
4316     done
4317 }
4318
4319 msvc_common_flags(){
4320     for flag; do
4321         case $flag in
4322             # In addition to specifying certain flags under the compiler
4323             # specific filters, they must be specified here as well or else the
4324             # generic catch all at the bottom will print the original flag.
4325             -Wall)                ;;
4326             -Wextra)              ;;
4327             -std=c99)             ;;
4328             # Common flags
4329             -fomit-frame-pointer) ;;
4330             -g)                   echo -Z7 ;;
4331             -fno-math-errno)      ;;
4332             -fno-common)          ;;
4333             -fno-signed-zeros)    ;;
4334             -fPIC)                ;;
4335             -mthumb)              ;;
4336             -march=*)             ;;
4337             -lz)                  echo zlib.lib ;;
4338             -lx264)               echo libx264.lib ;;
4339             -lstdc++)             ;;
4340             -l*)                  echo ${flag#-l}.lib ;;
4341             -LARGEADDRESSAWARE)   echo $flag ;;
4342             -L*)                  echo -libpath:${flag#-L} ;;
4343             *)                    echo $flag ;;
4344         esac
4345     done
4346 }
4347
4348 msvc_flags(){
4349     msvc_common_flags "$@"
4350     for flag; do
4351         case $flag in
4352             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4353                                        -wd4554 ;;
4354             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4355                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4356                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4357                                        -wd4307 \
4358                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4359         esac
4360     done
4361 }
4362
4363 icl_flags(){
4364     msvc_common_flags "$@"
4365     for flag; do
4366         case $flag in
4367             # Despite what Intel's documentation says -Wall, which is supported
4368             # on Windows, does enable remarks so disable them here.
4369             -Wall)                echo $flag -Qdiag-disable:remark ;;
4370             -std=c99)             echo -Qstd=c99 ;;
4371             -flto)                echo -ipo ;;
4372         esac
4373     done
4374 }
4375
4376 icc_flags(){
4377     for flag; do
4378         case $flag in
4379             -flto)                echo -ipo ;;
4380             *)                    echo $flag ;;
4381         esac
4382     done
4383 }
4384
4385 suncc_flags(){
4386     for flag; do
4387         case $flag in
4388             -march=*|-mcpu=*)
4389                 case "${flag#*=}" in
4390                     native)                   echo -xtarget=native       ;;
4391                     v9|niagara)               echo -xarch=sparc          ;;
4392                     ultrasparc)               echo -xarch=sparcvis       ;;
4393                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4394                     i586|pentium)             echo -xchip=pentium        ;;
4395                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4396                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4397                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4398                     pentium4*)          echo -xtarget=pentium4           ;;
4399                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4400                     *-sse3)             echo -xarch=sse3                 ;;
4401                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4402                     bonnell)                   echo -xarch=ssse3         ;;
4403                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4404                     westmere)                  echo -xtarget=westmere    ;;
4405                     silvermont)                echo -xarch=sse4_2        ;;
4406                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4407                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4408                                                echo -xarch=avx           ;;
4409                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4410                     btver1)                    echo -xarch=amdsse4a      ;;
4411                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4412                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4413                     k8|opteron|athlon64|athlon-fx)
4414                                                echo -xarch=sse2a         ;;
4415                     athlon*)                   echo -xarch=pentium_proa  ;;
4416                 esac
4417                 ;;
4418             -std=c99)             echo -xc99              ;;
4419             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4420             -fPIC)                echo -KPIC -xcode=pic32 ;;
4421             -W*,*)                echo $flag              ;;
4422             -f*-*|-W*|-mimpure-text)                      ;;
4423             -shared)              echo -G                 ;;
4424             *)                    echo $flag              ;;
4425         esac
4426     done
4427 }
4428
4429 probe_cc(){
4430     pfx=$1
4431     _cc=$2
4432     first=$3
4433
4434     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4435     unset _ld_o _ldflags _ld_lib _ld_path
4436     unset _depflags _DEPCMD _DEPFLAGS
4437     _flags_filter=echo
4438
4439     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4440         true # no-op to avoid reading stdin in following checks
4441     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4442         _type=llvm_gcc
4443         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4444         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4445         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4446         _cflags_speed='-O3'
4447         _cflags_size='-Os'
4448     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4449         _type=gcc
4450         gcc_version=$($_cc --version | head -n1)
4451         gcc_basever=$($_cc -dumpversion)
4452         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4453         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4454         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4455         case $gcc_basever in
4456             2) ;;
4457             2.*) ;;
4458             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4459         esac
4460         if [ "$first" = true ]; then
4461             case $gcc_basever in
4462                 4.2*)
4463                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4464             esac
4465         fi
4466         _cflags_speed='-O3'
4467         _cflags_size='-Os'
4468     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4469         _type=icc
4470         _ident=$($_cc --version | head -n1)
4471         _depflags='-MMD'
4472         _cflags_speed='-O3'
4473         _cflags_size='-Os'
4474         _cflags_noopt='-O1'
4475         _flags_filter=icc_flags
4476     elif $_cc -v 2>&1 | grep -q xlc; then
4477         _type=xlc
4478         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4479         _cflags_speed='-O5'
4480         _cflags_size='-O5 -qcompact'
4481     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4482         test -d "$sysroot" || die "No valid sysroot specified."
4483         _type=armcc
4484         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4485         armcc_conf="$PWD/armcc.conf"
4486         $_cc --arm_linux_configure                 \
4487              --arm_linux_config_file="$armcc_conf" \
4488              --configure_sysroot="$sysroot"        \
4489              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4490              die "Error creating armcc configuration file."
4491         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4492         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4493         as_default="${cross_prefix}gcc"
4494         _depflags='-MMD'
4495         _cflags_speed='-O3'
4496         _cflags_size='-Os'
4497     elif $_cc -v 2>&1 | grep -q clang && ! $_cc -? > /dev/null 2>&1; then
4498         _type=clang
4499         _ident=$($_cc --version 2>/dev/null | head -n1)
4500         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4501         _cflags_speed='-O3'
4502         _cflags_size='-Oz'
4503     elif $_cc -V 2>&1 | grep -q Sun; then
4504         _type=suncc
4505         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4506         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4507         _DEPFLAGS='-xM1 -xc99'
4508         _ldflags='-std=c99'
4509         _cflags_speed='-O5'
4510         _cflags_size='-O5 -xspace'
4511         _flags_filter=suncc_flags
4512     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4513         _type=pathscale
4514         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4515         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4516         _cflags_speed='-O2'
4517         _cflags_size='-Os'
4518         _flags_filter='filter_out -Wdisabled-optimization'
4519     elif $_cc -v 2>&1 | grep -q Open64; then
4520         _type=open64
4521         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4522         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4523         _cflags_speed='-O2'
4524         _cflags_size='-Os'
4525         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4526     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4527         _type=armasm
4528         _ident=$($_cc | head -n1)
4529         # 4509: "This form of conditional instruction is deprecated"
4530         _flags="-nologo -ignore 4509"
4531         _flags_filter=armasm_flags
4532     elif $_cc 2>&1 | grep -q Intel; then
4533         _type=icl
4534         _ident=$($_cc 2>&1 | head -n1)
4535         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4536         # Not only is O3 broken on 13.x+ but it is slower on all previous
4537         # versions (tested) as well.
4538         _cflags_speed="-O2"
4539         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4540         if $_cc 2>&1 | grep -q Linker; then
4541             _ld_o='-out:$@'
4542         else
4543             _ld_o='-Fe$@'
4544         fi
4545         _cc_o='-Fo$@'
4546         _cc_e='-P'
4547         _flags_filter=icl_flags
4548         _ld_lib='lib%.a'
4549         _ld_path='-libpath:'
4550         # -Qdiag-error to make icl error when seeing certain unknown arguments
4551         _flags='-nologo -Qdiag-error:4044,10157'
4552         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4553         # with MSVC which enables it by default.
4554         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4555         disable stripping
4556     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4557         # lld can emulate multiple different linkers; in ms link.exe mode,
4558         # the -? parameter gives the help output which contains an identifyable
4559         # string, while it gives an error in other modes.
4560         _type=lld-link
4561         # The link.exe mode doesn't have a switch for getting the version,
4562         # but we can force it back to gnu mode and get the version from there.
4563         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4564         _ld_o='-out:$@'
4565         _flags_filter=msvc_flags
4566         _ld_lib='lib%.a'
4567         _ld_path='-libpath:'
4568     elif $_cc -nologo- 2>&1 | grep -q Microsoft || { $_cc -v 2>&1 | grep -q clang && $_cc -? > /dev/null 2>&1; }; then
4569         _type=msvc
4570         _ident=$($_cc 2>&1 | head -n1 | tr -d '\r')
4571         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4572         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4573         _cflags_speed="-O2"
4574         _cflags_size="-O1"
4575         _cflags_noopt="-O1"
4576         if $_cc -nologo- 2>&1 | grep -q Linker; then
4577             _ld_o='-out:$@'
4578         else
4579             _ld_o='-Fe$@'
4580         fi
4581         _cc_o='-Fo$@'
4582         _cc_e='-P -Fi$@'
4583         _flags_filter=msvc_flags
4584         _ld_lib='lib%.a'
4585         _ld_path='-libpath:'
4586         _flags='-nologo'
4587         disable stripping
4588     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4589         _type=cparser
4590         _ident=$($_cc --version | head -n1)
4591         _depflags='-MMD'
4592         _cflags_speed='-O4'
4593         _cflags_size='-O2'
4594         _flags_filter=cparser_flags
4595     fi
4596
4597     eval ${pfx}_type=\$_type
4598     eval ${pfx}_ident=\$_ident
4599 }
4600
4601 set_ccvars(){
4602     eval ${1}_C=\${_cc_c-\${${1}_C}}
4603     eval ${1}_E=\${_cc_e-\${${1}_E}}
4604     eval ${1}_O=\${_cc_o-\${${1}_O}}
4605
4606     if [ -n "$_depflags" ]; then
4607         eval ${1}_DEPFLAGS=\$_depflags
4608     else
4609         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4610         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4611         eval DEP${1}FLAGS=\$_flags
4612     fi
4613 }
4614
4615 probe_cc cc "$cc" "true"
4616 cflags_filter=$_flags_filter
4617 cflags_speed=$_cflags_speed
4618 cflags_size=$_cflags_size
4619 cflags_noopt=$_cflags_noopt
4620 add_cflags $_flags $_cflags
4621 cc_ldflags=$_ldflags
4622 set_ccvars CC
4623 set_ccvars CXX
4624
4625 probe_cc hostcc "$host_cc"
4626 host_cflags_filter=$_flags_filter
4627 host_cflags_speed=$_cflags_speed
4628 add_host_cflags  $_flags $_cflags
4629 set_ccvars HOSTCC
4630
4631 test -n "$cc_type" && enable $cc_type ||
4632     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4633
4634 : ${as_default:=$cc}
4635 : ${objcc_default:=$cc}
4636 : ${dep_cc_default:=$cc}
4637 : ${ld_default:=$cc}
4638 : ${host_ld_default:=$host_cc}
4639 set_default ar as objcc dep_cc ld ln_s host_ld windres
4640
4641 probe_cc as "$as"
4642 asflags_filter=$_flags_filter
4643 add_asflags $_flags $_cflags
4644 set_ccvars AS
4645
4646 probe_cc objcc "$objcc"
4647 objcflags_filter=$_flags_filter
4648 add_objcflags $_flags $_cflags
4649 set_ccvars OBJC
4650
4651 probe_cc ld "$ld"
4652 ldflags_filter=$_flags_filter
4653 add_ldflags $_flags $_ldflags
4654 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4655 LD_O=${_ld_o-$LD_O}
4656 LD_LIB=${_ld_lib-$LD_LIB}
4657 LD_PATH=${_ld_path-$LD_PATH}
4658
4659 probe_cc hostld "$host_ld"
4660 host_ldflags_filter=$_flags_filter
4661 add_host_ldflags $_flags $_ldflags
4662 HOSTLD_O=${_ld_o-$HOSTLD_O}
4663
4664 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4665     probe_cc depcc "$dep_cc"
4666     CCDEP=${_DEPCMD:-$DEPCMD}
4667     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4668     DEPCCFLAGS=$_flags
4669 fi
4670
4671 if $ar 2>&1 | grep -q Microsoft; then
4672     arflags="-nologo"
4673     ar_o='-out:$@'
4674 elif $ar 2>&1 | grep -q "\[D\] "; then
4675     arflags="rcD"
4676     ar_o='$@'
4677 else
4678     arflags="rc"
4679     ar_o='$@'
4680 fi
4681
4682 add_cflags $extra_cflags
4683 add_cxxflags $extra_cxxflags
4684 add_objcflags $extra_objcflags
4685 add_asflags $extra_cflags
4686
4687 if test -n "$sysroot"; then
4688     case "$cc_type" in
4689         gcc|llvm_gcc|clang)
4690             add_cppflags --sysroot="$sysroot"
4691             add_ldflags --sysroot="$sysroot"
4692         ;;
4693     esac
4694 fi
4695
4696 if test "$cpu" = host; then
4697     enabled cross_compile &&
4698         die "--cpu=host makes no sense when cross-compiling."
4699
4700     case "$cc_type" in
4701         gcc|llvm_gcc)
4702             check_native(){
4703                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4704                 sed -n "/cc1.*$1=/{
4705                             s/.*$1=\\([^ ]*\\).*/\\1/
4706                             p
4707                             q
4708                         }" $TMPE
4709             }
4710             cpu=$(check_native -march || check_native -mcpu)
4711         ;;
4712         clang)
4713             check_native(){
4714                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4715                 sed -n "/cc1.*-target-cpu /{
4716                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4717                             p
4718                             q
4719                         }" $TMPE
4720             }
4721             cpu=$(check_native -march)
4722         ;;
4723     esac
4724
4725     test "${cpu:-host}" = host &&
4726         die "--cpu=host not supported with compiler $cc"
4727 fi
4728
4729 # Deal with common $arch aliases
4730 case "$arch" in
4731     aarch64|arm64)
4732         arch="aarch64"
4733     ;;
4734     arm*|iPad*|iPhone*)
4735         arch="arm"
4736     ;;
4737     mips*|IP*)
4738         case "$arch" in
4739         *el)
4740             add_cppflags -EL
4741             add_ldflags -EL
4742         ;;
4743         *eb)
4744             add_cppflags -EB
4745             add_ldflags -EB
4746         ;;
4747         esac
4748         arch="mips"
4749     ;;
4750     parisc*|hppa*)
4751         arch="parisc"
4752     ;;
4753     "Power Macintosh"|ppc*|powerpc*)
4754         arch="ppc"
4755     ;;
4756     s390|s390x)
4757         arch="s390"
4758     ;;
4759     sh4|sh)
4760         arch="sh4"
4761     ;;
4762     sun4*|sparc*)
4763         arch="sparc"
4764     ;;
4765     tilegx|tile-gx)
4766         arch="tilegx"
4767     ;;
4768     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4769         arch="x86"
4770     ;;
4771 esac
4772
4773 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4774 enable $arch
4775
4776 # Add processor-specific flags
4777 if enabled aarch64; then
4778
4779     case $cpu in
4780         armv*)
4781             cpuflags="-march=$cpu"
4782         ;;
4783         *)
4784             cpuflags="-mcpu=$cpu"
4785         ;;
4786     esac
4787
4788 elif enabled alpha; then
4789
4790     cpuflags="-mcpu=$cpu"
4791
4792 elif enabled arm; then
4793
4794     check_arm_arch() {
4795         test_cpp_condition stddef.h \
4796             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4797             $cpuflags
4798     }
4799
4800     probe_arm_arch() {
4801         if   check_arm_arch 4;        then echo armv4
4802         elif check_arm_arch 4T;       then echo armv4t
4803         elif check_arm_arch 5;        then echo armv5
4804         elif check_arm_arch 5E;       then echo armv5e
4805         elif check_arm_arch 5T;       then echo armv5t
4806         elif check_arm_arch 5TE;      then echo armv5te
4807         elif check_arm_arch 5TEJ;     then echo armv5te
4808         elif check_arm_arch 6;        then echo armv6
4809         elif check_arm_arch 6J;       then echo armv6j
4810         elif check_arm_arch 6K;       then echo armv6k
4811         elif check_arm_arch 6Z;       then echo armv6z
4812         elif check_arm_arch 6KZ;      then echo armv6zk
4813         elif check_arm_arch 6ZK;      then echo armv6zk
4814         elif check_arm_arch 6T2;      then echo armv6t2
4815         elif check_arm_arch 7;        then echo armv7
4816         elif check_arm_arch 7A  7_A;  then echo armv7-a
4817         elif check_arm_arch 7S;       then echo armv7-a
4818         elif check_arm_arch 7R  7_R;  then echo armv7-r
4819         elif check_arm_arch 7M  7_M;  then echo armv7-m
4820         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4821         elif check_arm_arch 8A  8_A;  then echo armv8-a
4822         fi
4823     }
4824
4825     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4826
4827     case $cpu in
4828         armv*)
4829             cpuflags="-march=$cpu"
4830             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4831         ;;
4832         *)
4833             cpuflags="-mcpu=$cpu"
4834             case $cpu in
4835                 cortex-a*)                               subarch=armv7a  ;;
4836                 cortex-r*)                               subarch=armv7r  ;;
4837                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4838                 arm11*)                                  subarch=armv6   ;;
4839                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4840                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4841                 *)                             subarch=$(probe_arm_arch) ;;
4842             esac
4843         ;;
4844     esac
4845
4846     case "$subarch" in
4847         armv5t*)    enable fast_clz                ;;
4848         armv[6-8]*)
4849             enable fast_clz
4850             disabled fast_unaligned || enable fast_unaligned
4851             ;;
4852     esac
4853
4854 elif enabled avr32; then
4855
4856     case $cpu in
4857         ap7[02]0[0-2])
4858             subarch="avr32_ap"
4859             cpuflags="-mpart=$cpu"
4860         ;;
4861         ap)
4862             subarch="avr32_ap"
4863             cpuflags="-march=$cpu"
4864         ;;
4865         uc3[ab]*)
4866             subarch="avr32_uc"
4867             cpuflags="-mcpu=$cpu"
4868         ;;
4869         uc)
4870             subarch="avr32_uc"
4871             cpuflags="-march=$cpu"
4872         ;;
4873     esac
4874
4875 elif enabled bfin; then
4876
4877     cpuflags="-mcpu=$cpu"
4878
4879 elif enabled mips; then
4880
4881     cpuflags="-march=$cpu"
4882
4883     if [ "$cpu" != "generic" ]; then
4884         disable mips32r2
4885         disable mips32r5
4886         disable mips64r2
4887         disable mips32r6
4888         disable mips64r6
4889         disable loongson2
4890         disable loongson3
4891
4892         case $cpu in
4893             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4894                 enable mips32r2
4895                 disable msa
4896             ;;
4897             p5600|i6400|p6600)
4898                 disable mipsdsp
4899                 disable mipsdspr2
4900             ;;
4901             loongson*)
4902                 enable loongson2
4903                 enable loongson3
4904                 enable local_aligned
4905                 enable simd_align_16
4906                 enable fast_64bit
4907                 enable fast_clz
4908                 enable fast_cmov
4909                 enable fast_unaligned
4910                 disable aligned_stack
4911                 disable mipsdsp
4912                 disable mipsdspr2
4913                 # When gcc version less than 5.3.0, add -fno-expensive-optimizations flag.
4914                 if [ $cc == gcc ]; then
4915                     gcc_version=$(gcc -dumpversion)
4916                     if [ "$(echo "$gcc_version 5.3.0" | tr " " "\n" | sort -rV | head -n 1)" == "$gcc_version" ]; then
4917                         expensive_optimization_flag=""
4918                     else
4919                         expensive_optimization_flag="-fno-expensive-optimizations"
4920                     fi
4921                 fi
4922                 case $cpu in
4923                     loongson3*)
4924                         cpuflags="-march=loongson3a -mhard-float $expensive_optimization_flag"
4925                     ;;
4926                     loongson2e)
4927                         cpuflags="-march=loongson2e -mhard-float $expensive_optimization_flag"
4928                     ;;
4929                     loongson2f)
4930                         cpuflags="-march=loongson2f -mhard-float $expensive_optimization_flag"
4931                     ;;
4932                 esac
4933             ;;
4934             *)
4935                 # Unknown CPU. Disable everything.
4936                 warn "unknown CPU. Disabling all MIPS optimizations."
4937                 disable mipsfpu
4938                 disable mipsdsp
4939                 disable mipsdspr2
4940                 disable msa
4941                 disable mmi
4942             ;;
4943         esac
4944
4945         case $cpu in
4946             24kc)
4947                 disable mipsfpu
4948                 disable mipsdsp
4949                 disable mipsdspr2
4950             ;;
4951             24kf*)
4952                 disable mipsdsp
4953                 disable mipsdspr2
4954             ;;
4955             24kec|34kc|1004kc)
4956                 disable mipsfpu
4957                 disable mipsdspr2
4958             ;;
4959             24kef*|34kf*|1004kf*)
4960                 disable mipsdspr2
4961             ;;
4962             74kc)
4963                 disable mipsfpu
4964             ;;
4965             p5600)
4966                 enable mips32r5
4967                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4968             ;;
4969             i6400)
4970                 enable mips64r6
4971                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4972             ;;
4973             p6600)
4974                 enable mips64r6
4975                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4976             ;;
4977         esac
4978     else
4979         # We do not disable anything. Is up to the user to disable the unwanted features.
4980         warn 'generic cpu selected'
4981     fi
4982
4983 elif enabled ppc; then
4984
4985     disable ldbrx
4986
4987     case $(tolower $cpu) in
4988         601|ppc601|powerpc601)
4989             cpuflags="-mcpu=601"
4990             disable altivec
4991         ;;
4992         603*|ppc603*|powerpc603*)
4993             cpuflags="-mcpu=603"
4994             disable altivec
4995         ;;
4996         604*|ppc604*|powerpc604*)
4997             cpuflags="-mcpu=604"
4998             disable altivec
4999         ;;
5000         g3|75*|ppc75*|powerpc75*)
5001             cpuflags="-mcpu=750"
5002             disable altivec
5003         ;;
5004         g4|745*|ppc745*|powerpc745*)
5005             cpuflags="-mcpu=7450"
5006             disable vsx
5007         ;;
5008         74*|ppc74*|powerpc74*)
5009             cpuflags="-mcpu=7400"
5010             disable vsx
5011         ;;
5012         g5|970|ppc970|powerpc970)
5013             cpuflags="-mcpu=970"
5014             disable vsx
5015         ;;
5016         power[3-6]*)
5017             cpuflags="-mcpu=$cpu"
5018             disable vsx
5019         ;;
5020         power[7-8]*)
5021             cpuflags="-mcpu=$cpu"
5022         ;;
5023         cell)
5024             cpuflags="-mcpu=cell"
5025             enable ldbrx
5026             disable vsx
5027         ;;
5028         e500mc)
5029             cpuflags="-mcpu=e500mc"
5030             disable altivec
5031         ;;
5032         e500v2)
5033             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
5034             disable altivec
5035             disable dcbzl
5036         ;;
5037         e500)
5038             cpuflags="-mcpu=8540 -mhard-float"
5039             disable altivec
5040             disable dcbzl
5041         ;;
5042     esac
5043
5044 elif enabled sparc; then
5045
5046     case $cpu in
5047         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
5048             cpuflags="-mcpu=$cpu"
5049         ;;
5050         ultrasparc*|niagara[234])
5051             cpuflags="-mcpu=$cpu"
5052         ;;
5053     esac
5054
5055 elif enabled x86; then
5056
5057     case $cpu in
5058         i[345]86|pentium)
5059             cpuflags="-march=$cpu"
5060             disable i686
5061             disable mmx
5062         ;;
5063         # targets that do NOT support nopl and conditional mov (cmov)
5064         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
5065             cpuflags="-march=$cpu"
5066             disable i686
5067         ;;
5068         # targets that do support nopl and conditional mov (cmov)
5069         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
5070         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
5071         |amdfam10|barcelona|b[dt]ver*|znver*)
5072             cpuflags="-march=$cpu"
5073             enable i686
5074             enable fast_cmov
5075         ;;
5076         # targets that do support conditional mov but on which it's slow
5077         pentium4|pentium4m|prescott|nocona)
5078             cpuflags="-march=$cpu"
5079             enable i686
5080             disable fast_cmov
5081         ;;
5082     esac
5083
5084 fi
5085
5086 if [ "$cpu" != generic ]; then
5087     add_cflags  $cpuflags
5088     add_asflags $cpuflags
5089     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
5090 fi
5091
5092 # compiler sanity check
5093 test_exec <<EOF
5094 int main(void){ return 0; }
5095 EOF
5096 if test "$?" != 0; then
5097     echo "$cc is unable to create an executable file."
5098     if test -z "$cross_prefix" && ! enabled cross_compile ; then
5099         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
5100         echo "Only do this if you know what cross compiling means."
5101     fi
5102     die "C compiler test failed."
5103 fi
5104
5105 add_cppflags -D_ISOC99_SOURCE
5106 add_cxxflags -D__STDC_CONSTANT_MACROS
5107 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
5108
5109 # some compilers silently accept -std=c11, so we also need to check that the
5110 # version macro is defined properly
5111 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
5112     add_cflags -std=c11 ||
5113     check_cflags -std=c99
5114
5115 check_cppflags -D_FILE_OFFSET_BITS=64
5116 check_cppflags -D_LARGEFILE_SOURCE
5117
5118 add_host_cppflags -D_ISOC99_SOURCE
5119 check_host_cflags -std=c99
5120 check_host_cflags -Wall
5121 check_host_cflags $host_cflags_speed
5122
5123 check_64bit(){
5124     arch32=$1
5125     arch64=$2
5126     expr=${3:-'sizeof(void *) > 4'}
5127     test_code cc "" "int test[2*($expr) - 1]" &&
5128         subarch=$arch64 || subarch=$arch32
5129     enable $subarch
5130 }
5131
5132 case "$arch" in
5133     aarch64|alpha|ia64)
5134         enabled shared && enable_weak pic
5135     ;;
5136     mips)
5137         check_64bit mips mips64 '_MIPS_SIM > 1'
5138         enabled shared && enable_weak pic
5139     ;;
5140     parisc)
5141         check_64bit parisc parisc64
5142         enabled shared && enable_weak pic
5143     ;;
5144     ppc)
5145         check_64bit ppc ppc64
5146         enabled shared && enable_weak pic
5147     ;;
5148     s390)
5149         check_64bit s390 s390x
5150         enabled shared && enable_weak pic
5151     ;;
5152     sparc)
5153         check_64bit sparc sparc64
5154         enabled shared && enable_weak pic
5155     ;;
5156     x86)
5157         check_64bit x86_32 x86_64
5158         # Treat x32 as x64 for now. Note it also needs pic if shared
5159         test "$subarch" = "x86_32" && test_cpp_condition stddef.h 'defined(__x86_64__)' &&
5160             subarch=x86_64 && enable x86_64 && disable x86_32
5161         if enabled x86_64; then
5162             enabled shared && enable_weak pic
5163             objformat=elf64
5164         fi
5165     ;;
5166 esac
5167
5168 # OS specific
5169 case $target_os in
5170     aix)
5171         SHFLAGS=-shared
5172         add_cppflags '-I\$(SRC_PATH)/compat/aix'
5173         enabled shared && add_ldflags -Wl,-brtl
5174         arflags='-Xany -r -c'
5175         striptype=""
5176         ;;
5177     android)
5178         disable symver
5179         enable section_data_rel_ro
5180         add_cflags -fPIE
5181         add_ldexeflags -fPIE -pie
5182         SLIB_INSTALL_NAME='$(SLIBNAME)'
5183         SLIB_INSTALL_LINKS=
5184         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
5185         ;;
5186     haiku)
5187         prefix_default="/boot/common"
5188         network_extralibs="-lnetwork"
5189         host_extralibs=
5190         ;;
5191     sunos)
5192         SHFLAGS='-shared -Wl,-h,$$(@F)'
5193         enabled x86 && append SHFLAGS -mimpure-text
5194         network_extralibs="-lsocket -lnsl"
5195         add_cppflags -D__EXTENSIONS__
5196         # When using suncc to build, the Solaris linker will mark
5197         # an executable with each instruction set encountered by
5198         # the Solaris assembler.  As our libraries contain their own
5199         # guards for processor-specific code, instead suppress
5200         # generation of the HWCAPS ELF section on Solaris x86 only.
5201         enabled_all suncc x86 &&
5202             echo "hwcap_1 = OVERRIDE;" > mapfile &&
5203             add_ldflags -Wl,-M,mapfile
5204         nm_default='nm -P -g'
5205         striptype=""
5206         version_script='-M'
5207         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
5208         ;;
5209     netbsd)
5210         disable symver
5211         oss_indev_extralibs="-lossaudio"
5212         oss_outdev_extralibs="-lossaudio"
5213         enabled gcc || check_ldflags -Wl,-zmuldefs
5214         ;;
5215     openbsd|bitrig)
5216         disable symver
5217         striptype=""
5218         SHFLAGS='-shared'
5219         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
5220         SLIB_INSTALL_LINKS=
5221         oss_indev_extralibs="-lossaudio"
5222         oss_outdev_extralibs="-lossaudio"
5223         ;;
5224     dragonfly)
5225         disable symver
5226         ;;
5227     freebsd)
5228         ;;
5229     bsd/os)
5230         add_extralibs -lpoll -lgnugetopt
5231         strip="strip -d"
5232         ;;
5233     darwin)
5234         enabled ppc && add_asflags -force_cpusubtype_ALL
5235         install_name_dir_default='$(SHLIBDIR)'
5236         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
5237         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
5238         strip="${strip} -x"
5239         add_ldflags -Wl,-dynamic,-search_paths_first
5240         check_cflags -Werror=partial-availability
5241         SLIBSUF=".dylib"
5242         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
5243         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
5244         enabled x86_64 && objformat="macho64" || objformat="macho32"
5245         enabled_any pic shared x86_64 ||
5246             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
5247         check_headers dispatch/dispatch.h &&
5248             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
5249         if test -n "$sysroot"; then
5250             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
5251             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
5252         fi
5253         version_script='-exported_symbols_list'
5254         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
5255         ;;
5256     msys*)
5257         die "Native MSYS builds are discouraged, please use the MINGW environment."
5258         ;;
5259     mingw32*|mingw64*)
5260         target_os=mingw32
5261         LIBTARGET=i386
5262         if enabled x86_64; then
5263             LIBTARGET="i386:x86-64"
5264         elif enabled arm; then
5265             LIBTARGET="arm"
5266         elif enabled aarch64; then
5267             LIBTARGET="arm64"
5268         fi
5269         if enabled shared; then
5270             # Cannot build both shared and static libs when using dllimport.
5271             disable static
5272         fi
5273         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5274         enabled x86_32 && check_ldflags -Wl,--large-address-aware
5275         shlibdir_default="$bindir_default"
5276         SLIBPREF=""
5277         SLIBSUF=".dll"
5278         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5279         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5280         if test_cmd lib.exe -list; then
5281             SLIB_EXTRA_CMD=-'lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5282             if enabled x86_64; then
5283                 LIBTARGET=x64
5284             fi
5285         else
5286             SLIB_EXTRA_CMD=-'$(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
5287         fi
5288         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5289         SLIB_INSTALL_LINKS=
5290         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5291         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5292         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5293         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--disable-auto-image-base $$(@:$(SLIBSUF)=.def)'
5294         enabled x86_64 && objformat="win64" || objformat="win32"
5295         dlltool="${cross_prefix}dlltool"
5296         ranlib=:
5297         enable dos_paths
5298         check_ldflags -Wl,--nxcompat,--dynamicbase
5299         # Lets work around some stupidity in binutils.
5300         # ld will strip relocations from executables even though we need them
5301         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
5302         # however ld then forgets what the entry point should be (oops) so we
5303         # have to manually (re)set it.
5304         if enabled x86_32; then
5305             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
5306         elif enabled x86_64; then
5307             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
5308             check_ldflags -Wl,--high-entropy-va # binutils 2.25
5309             # Set image base >4GB for extra entropy with HEASLR
5310             add_ldexeflags -Wl,--image-base,0x140000000
5311             append SHFLAGS -Wl,--image-base,0x180000000
5312         fi
5313         ;;
5314     win32|win64)
5315         disable symver
5316         if enabled shared; then
5317             # Link to the import library instead of the normal static library
5318             # for shared libs.
5319             LD_LIB='%.lib'
5320             # Cannot build both shared and static libs with MSVC or icl.
5321             disable static
5322         fi
5323         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
5324         shlibdir_default="$bindir_default"
5325         SLIBPREF=""
5326         SLIBSUF=".dll"
5327         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5328         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5329         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5330         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5331         SLIB_INSTALL_LINKS=
5332         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5333         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5334         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5335         enabled x86_64 && objformat="win64" || objformat="win32"
5336         ranlib=:
5337         enable dos_paths
5338         ;;
5339     cygwin*)
5340         target_os=cygwin
5341         shlibdir_default="$bindir_default"
5342         SLIBPREF="cyg"
5343         SLIBSUF=".dll"
5344         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5345         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5346         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5347         SLIB_INSTALL_LINKS=
5348         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5349         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5350         enabled x86_64 && objformat="win64" || objformat="win32"
5351         enable dos_paths
5352         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5353         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5354         ;;
5355     *-dos|freedos|opendos)
5356         network_extralibs="-lsocket"
5357         objformat="coff"
5358         enable dos_paths
5359         ;;
5360     linux)
5361         enable section_data_rel_ro
5362         enabled_any arm aarch64 && enable_weak linux_perf
5363         ;;
5364     irix*)
5365         target_os=irix
5366         ranlib="echo ignoring ranlib"
5367         ;;
5368     os/2*)
5369         strip="lxlite -CS"
5370         striptype=""
5371         objformat="aout"
5372         add_cppflags -D_GNU_SOURCE
5373         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5374         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5375         LIBSUF="_s.a"
5376         SLIBPREF=""
5377         SLIBSUF=".dll"
5378         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5379         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5380         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5381             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5382             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5383             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5384             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5385         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5386             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5387         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5388         SLIB_INSTALL_LINKS=
5389         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5390         enable dos_paths
5391         enable_weak os2threads
5392         ;;
5393     gnu/kfreebsd)
5394         add_cppflags -D_BSD_SOURCE
5395         ;;
5396     gnu)
5397         ;;
5398     qnx)
5399         add_cppflags -D_QNX_SOURCE
5400         network_extralibs="-lsocket"
5401         ;;
5402     symbian)
5403         SLIBSUF=".dll"
5404         enable dos_paths
5405         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5406         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5407         add_ldflags -Wl,--target1-abs,--no-undefined \
5408                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5409                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5410         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5411                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5412                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5413         ;;
5414     minix)
5415         ;;
5416     none)
5417         ;;
5418     *)
5419         die "Unknown OS '$target_os'."
5420         ;;
5421 esac
5422
5423 # test if creating links works
5424 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5425 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5426 mkdir "$link_dest"
5427 $ln_s "$link_dest" "$link_name"
5428 touch "$link_dest/test_file"
5429 if [ "$source_path" != "." ] && [ "$source_path" != "src" ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5430     # create link to source path
5431     [ -e src ] && rm src
5432     $ln_s "$source_path" src
5433     source_link=src
5434 else
5435     # creating directory links doesn't work
5436     # fall back to using the full source path
5437     source_link="$source_path"
5438 fi
5439 # cleanup
5440 rm -r "$link_dest"
5441 rm -r "$link_name"
5442
5443 # determine libc flavour
5444
5445 probe_libc(){
5446     pfx=$1
5447     pfx_no_=${pfx%_}
5448     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5449     if test_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5450         eval ${pfx}libc_type=uclibc
5451         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5452     elif test_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5453         eval ${pfx}libc_type=glibc
5454         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5455     # MinGW headers can be installed on Cygwin, so check for newlib first.
5456     elif test_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5457         eval ${pfx}libc_type=newlib
5458         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5459     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5460     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5461         eval ${pfx}libc_type=mingw64
5462         if test_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5463             add_compat msvcrt/snprintf.o
5464             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5465         fi
5466         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5467         eval test \$${pfx_no_}cc_type = "gcc" &&
5468             add_${pfx}cppflags -D__printf__=__gnu_printf__
5469         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5470             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5471         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5472     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5473          test_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5474         eval ${pfx}libc_type=mingw32
5475         test_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5476             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5477             die "ERROR: MinGW32 runtime version must be >= 3.15."
5478         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5479         test_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5480             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5481         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5482             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5483         eval test \$${pfx_no_}cc_type = "gcc" &&
5484             add_${pfx}cppflags -D__printf__=__gnu_printf__
5485         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5486     elif test_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5487         eval ${pfx}libc_type=msvcrt
5488         if test_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5489             if [ "$pfx" = host_ ]; then
5490                 add_host_cppflags -Dsnprintf=_snprintf
5491             else
5492                 add_compat strtod.o strtod=avpriv_strtod
5493                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5494                                              _snprintf=avpriv_snprintf  \
5495                                              vsnprintf=avpriv_vsnprintf
5496             fi
5497         fi
5498         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5499         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5500         # 0x601 by default unless something else is set by the user.
5501         # This can easily lead to us detecting functions only present
5502         # in such new versions and producing binaries requiring windows 7.0.
5503         # Therefore explicitly set the default to Vista unless the user has
5504         # set something else on the command line.
5505         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5506         # family. For these cases, configure is free to use any functions
5507         # found in the SDK headers by default. (Alternatively, we could force
5508         # _WIN32_WINNT to 0x0602 in that case.)
5509         test_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5510             { test_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0600; }
5511 #ifdef WINAPI_FAMILY
5512 #include <winapifamily.h>
5513 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5514 #error not desktop
5515 #endif
5516 #endif
5517 EOF
5518         if [ "$pfx" = "" ]; then
5519             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5520             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5521         fi
5522     elif test_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5523         eval ${pfx}libc_type=klibc
5524     elif test_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5525         eval ${pfx}libc_type=bionic
5526     elif test_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5527         eval ${pfx}libc_type=solaris
5528         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5529     elif test_${pfx}cpp_condition sys/version.h "defined __DJGPP__"; then
5530         eval ${pfx}libc_type=djgpp
5531         add_cppflags -U__STRICT_ANSI__
5532         add_cflags "-include $source_path/compat/djgpp/math.h"
5533         add_compat djgpp/math.o
5534     fi
5535     test_${pfx}cc <<EOF
5536 #include <time.h>
5537 void *v = localtime_r;
5538 EOF
5539 test "$?" != 0 && test_${pfx}cc -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 <<EOF && add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5540 #include <time.h>
5541 void *v = localtime_r;
5542 EOF
5543
5544     eval test -n "\${${pfx}libc_type}" && enable ${pfx}libc_${libc_type}
5545 }
5546
5547 probe_libc
5548 probe_libc host_
5549
5550 # hacks for compiler/libc/os combinations
5551
5552 case $libc_type in
5553     bionic)
5554         add_compat strtod.o strtod=avpriv_strtod
5555         ;;
5556 esac
5557
5558 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5559     add_cppflags '-I\$(SRC_PATH)/compat/float'
5560
5561 test_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5562
5563 set_default libdir
5564 : ${shlibdir_default:="$libdir"}
5565 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5566
5567 set_default $PATHS_LIST
5568 set_default nm
5569
5570 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5571
5572 enable_weak_pic() {
5573     disabled pic && return
5574     enable pic
5575     add_cppflags -DPIC
5576     case "$target_os" in
5577     mingw*|cygwin*|win*)
5578         ;;
5579     *)
5580         add_cflags -fPIC
5581         add_asflags -fPIC
5582         ;;
5583     esac
5584 }
5585
5586 enabled pic && enable_weak_pic
5587
5588 test_cc <<EOF || die "Symbol mangling check failed."
5589 int ff_extern;
5590 EOF
5591 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5592 extern_prefix=${sym%%ff_extern*}
5593
5594 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
5595
5596 for restrict_keyword in restrict __restrict__ __restrict ""; do
5597     test_code cc "" "char * $restrict_keyword p" && break
5598 done
5599
5600 check_cc pragma_deprecated "" '_Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"")'
5601
5602 # The global variable ensures the bits appear unchanged in the object file.
5603 test_cc <<EOF || die "endian test failed"
5604 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5605 EOF
5606 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5607
5608 check_cc const_nan math.h "struct { double d; } static const bar[] = { { NAN } }"
5609
5610 if ! enabled ppc64 || enabled bigendian; then
5611     disable vsx
5612 fi
5613
5614 check_gas() {
5615     log "check_gas using '$as' as AS"
5616     # :vararg is used on aarch64, arm and ppc altivec
5617     check_as vararg "
5618 .macro m n, y:vararg=0
5619 \n: .int \y
5620 .endm
5621 m x" || return 1
5622     # .altmacro is only used in arm asm
5623     ! enabled arm || check_as gnu_as ".altmacro"
5624 }
5625
5626 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5627     nogas=:
5628     enabled_any arm aarch64 && nogas=die
5629     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5630     as_noop=-v
5631
5632     case $as_type in
5633         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5634         gcc)  gaspp_as_type=gas ;;
5635         *)    gaspp_as_type=$as_type ;;
5636     esac
5637
5638     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5639
5640     test "${as#*gas-preprocessor.pl}" != "$as" ||
5641     test_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5642         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5643
5644     if ! check_gas ; then
5645         as=${gas:=$as}
5646         check_gas || \
5647             $nogas "GNU assembler not found, install/update gas-preprocessor"
5648     fi
5649
5650     check_as as_func ".func test
5651                       .endfunc"
5652 fi
5653
5654 check_inline_asm inline_asm_labels '"1:\n"'
5655
5656 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5657
5658 if enabled aarch64; then
5659     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5660     # internal assembler in clang 3.3 does not support this instruction
5661     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5662     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5663
5664     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5665
5666 elif enabled alpha; then
5667
5668     check_cflags -mieee
5669
5670 elif enabled arm; then
5671
5672     enabled msvc && check_cpp_condition thumb stddef.h "defined _M_ARMT"
5673     test_cpp_condition stddef.h "defined __thumb__" && test_cc <<EOF && enable_weak thumb
5674 float func(float a, float b){ return a+b; }
5675 EOF
5676     enabled thumb && check_cflags -mthumb || check_cflags -marm
5677
5678     if check_cpp_condition vfp_args stddef.h "defined __ARM_PCS_VFP"; then
5679         :
5680     elif check_cpp_condition vfp_args stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5681         :
5682     elif ! test_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5683         case "${cross_prefix:-$cc}" in
5684             *hardfloat*) enable vfp_args; fpabi=vfp ;;
5685             *) check_ld "cc" vfp_args <<EOF && fpabi=vfp || fpabi=soft ;;
5686 __asm__ (".eabi_attribute 28, 1");
5687 int main(void) { return 0; }
5688 EOF
5689         esac
5690         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5691     fi
5692
5693     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5694     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5695     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5696     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5697     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5698     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5699     enabled setend  && check_insn setend  'setend be'
5700
5701     [ $target_os = linux ] || [ $target_os = android ] ||
5702         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5703             $ARCH_EXT_LIST_ARM
5704
5705     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5706
5707     check_as as_arch_directive ".arch armv7-a"
5708     check_as as_dn_directive   "ra .dn d0.i16"
5709     check_as as_fpu_directive  ".fpu neon"
5710
5711     # llvm's integrated assembler supports .object_arch from llvm 3.5
5712     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5713         check_as as_object_arch ".object_arch armv4"
5714
5715     # MS armasm fails to assemble our PIC constructs
5716     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5717
5718 elif enabled mips; then
5719
5720     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5721     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5722     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5723
5724     # Enable minimum ISA based on selected options
5725     if enabled mips64; then
5726         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5727         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5728         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5729     else
5730         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5731         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5732         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5733         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5734     fi
5735
5736     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5737     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5738     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_headers msa.h || disable msa
5739     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5740     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5741
5742     if enabled bigendian && enabled msa; then
5743         disable msa
5744     fi
5745
5746 elif enabled parisc; then
5747
5748     if enabled gcc; then
5749         case $($cc -dumpversion) in
5750             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5751         esac
5752     fi
5753
5754 elif enabled ppc; then
5755
5756     enable local_aligned
5757
5758     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5759     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5760     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5761     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5762
5763     if enabled altivec; then
5764         check_cflags -maltivec -mabi=altivec
5765
5766         # check if our compiler supports Motorola AltiVec C API
5767         check_cc altivec altivec.h "vector signed int v1 = (vector signed int) { 0 };
5768                                     vector signed int v2 = (vector signed int) { 1 };
5769                                     v1 = vec_add(v1, v2);"
5770
5771         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5772     fi
5773
5774     if enabled vsx; then
5775         check_cflags -mvsx &&
5776         check_cc vsx altivec.h "int v[4] = { 0 };
5777                                 vector signed int v1 = vec_vsx_ld(0, v);"
5778     fi
5779
5780     if enabled power8; then
5781         check_cpp_condition power8 "altivec.h" "defined(_ARCH_PWR8)"
5782     fi
5783
5784 elif enabled x86; then
5785
5786     check_builtin rdtsc    intrin.h   "__rdtsc()"
5787     check_builtin mm_empty mmintrin.h "_mm_empty()"
5788
5789     enable local_aligned
5790
5791     # check whether EBP is available on x86
5792     # As 'i' is stored on the stack, this program will crash
5793     # if the base pointer is used to access it because the
5794     # base pointer is cleared in the inline assembly code.
5795     check_exec_crash <<EOF && enable ebp_available
5796 volatile int i=0;
5797 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5798 return i;
5799 EOF
5800
5801     # check whether EBX is available on x86
5802     check_inline_asm ebx_available '""::"b"(0)' &&
5803         check_inline_asm ebx_available '"":::"%ebx"'
5804
5805     # check whether xmm clobbers are supported
5806     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5807
5808     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5809         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5810
5811     # check whether binutils is new enough to compile SSSE3/MMXEXT
5812     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5813     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5814
5815     probe_x86asm(){
5816         x86asmexe_probe=$1
5817         if test_cmd $x86asmexe_probe -v; then
5818             x86asmexe=$x86asmexe_probe
5819             x86asm_type=nasm
5820             x86asm_debug="-g -F dwarf"
5821             X86ASMDEP=
5822             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5823         elif test_cmd $x86asmexe_probe --version; then
5824             x86asmexe=$x86asmexe_probe
5825             x86asm_type=yasm
5826             x86asm_debug="-g dwarf2"
5827             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
5828             X86ASM_DEPFLAGS=
5829         fi
5830         check_x86asm x86asm "movbe ecx, [5]"
5831     }
5832
5833     if ! disabled_any asm mmx x86asm; then
5834         disable x86asm
5835         for program in $x86asmexe nasm yasm; do
5836             probe_x86asm $program && break
5837         done
5838         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
5839         X86ASMFLAGS="-f $objformat"
5840         enabled pic               && append X86ASMFLAGS "-DPIC"
5841         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
5842         case "$objformat" in
5843             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
5844         esac
5845
5846         check_x86asm avx512_external "vmovdqa32 [eax]{k1}{z}, zmm0"
5847         check_x86asm avx2_external   "vextracti128 xmm0, ymm0, 0"
5848         check_x86asm xop_external    "vpmacsdd xmm0, xmm1, xmm2, xmm3"
5849         check_x86asm fma4_external   "vfmaddps ymm0, ymm1, ymm2, ymm3"
5850         check_x86asm cpunop          "CPU amdnop"
5851     fi
5852
5853     case "$cpu" in
5854         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5855             disable fast_clz
5856         ;;
5857     esac
5858
5859 fi
5860
5861 check_cc intrinsics_neon arm_neon.h "int16x8_t test = vdupq_n_s16(0)"
5862
5863 check_ldflags -Wl,--as-needed
5864 check_ldflags -Wl,-z,noexecstack
5865
5866 if ! disabled network; then
5867     check_func getaddrinfo $network_extralibs
5868     check_func inet_aton $network_extralibs
5869
5870     check_type netdb.h "struct addrinfo"
5871     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5872     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5873     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5874     check_type poll.h "struct pollfd"
5875     check_type netinet/sctp.h "struct sctp_event_subscribe"
5876     check_struct "sys/socket.h" "struct msghdr" msg_flags
5877     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5878     check_type netinet/in.h "struct sockaddr_in6"
5879     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5880     check_type "sys/types.h sys/socket.h" socklen_t
5881
5882     # Prefer arpa/inet.h over winsock2
5883     if check_headers arpa/inet.h ; then
5884         check_func closesocket
5885     elif check_headers winsock2.h ; then
5886         check_func_headers winsock2.h closesocket -lws2 &&
5887             network_extralibs="-lws2" ||
5888         { check_func_headers winsock2.h closesocket -lws2_32 &&
5889             network_extralibs="-lws2_32"; } || disable winsock2_h network
5890         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5891
5892         check_type ws2tcpip.h socklen_t
5893         check_type ws2tcpip.h "struct addrinfo"
5894         check_type ws2tcpip.h "struct group_source_req"
5895         check_type ws2tcpip.h "struct ip_mreq_source"
5896         check_type ws2tcpip.h "struct ipv6_mreq"
5897         check_type winsock2.h "struct pollfd"
5898         check_struct winsock2.h "struct sockaddr" sa_len
5899         check_type ws2tcpip.h "struct sockaddr_in6"
5900         check_type ws2tcpip.h "struct sockaddr_storage"
5901     else
5902         disable network
5903     fi
5904 fi
5905
5906 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5907 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5908 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5909 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5910 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5911 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5912 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5913
5914 case "$custom_allocator" in
5915     jemalloc)
5916         # jemalloc by default does not use a prefix
5917         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5918     ;;
5919     tcmalloc)
5920         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
5921         malloc_prefix=tc_
5922     ;;
5923 esac
5924
5925 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5926 check_func  ${malloc_prefix}memalign            && enable memalign
5927 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5928
5929 check_func  access
5930 check_func_headers stdlib.h arc4random
5931 check_lib   clock_gettime time.h clock_gettime || check_lib clock_gettime time.h clock_gettime -lrt
5932 check_func  fcntl
5933 check_func  fork
5934 check_func  gethrtime
5935 check_func  getopt
5936 check_func  getrusage
5937 check_func  gettimeofday
5938 check_func  isatty
5939 check_func  mkstemp
5940 check_func  mmap
5941 check_func  mprotect
5942 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5943 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
5944 check_func  sched_getaffinity
5945 check_func  setrlimit
5946 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5947 check_func  strerror_r
5948 check_func  sysconf
5949 check_func  sysctl
5950 check_func  usleep
5951
5952 check_func_headers conio.h kbhit
5953 check_func_headers io.h setmode
5954 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5955 check_func_headers mach/mach_time.h mach_absolute_time
5956 check_func_headers stdlib.h getenv
5957 check_func_headers sys/stat.h lstat
5958
5959 check_func_headers windows.h GetProcessAffinityMask
5960 check_func_headers windows.h GetProcessTimes
5961 check_func_headers windows.h GetSystemTimeAsFileTime
5962 check_func_headers windows.h LoadLibrary
5963 check_func_headers windows.h MapViewOfFile
5964 check_func_headers windows.h PeekNamedPipe
5965 check_func_headers windows.h SetConsoleTextAttribute
5966 check_func_headers windows.h SetConsoleCtrlHandler
5967 check_func_headers windows.h Sleep
5968 check_func_headers windows.h VirtualAlloc
5969 check_func_headers glob.h glob
5970 enabled xlib &&
5971     check_lib xlib "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5972
5973 check_headers direct.h
5974 check_headers dirent.h
5975 check_headers dxgidebug.h
5976 check_headers dxva.h
5977 check_headers dxva2api.h -D_WIN32_WINNT=0x0600
5978 check_headers io.h
5979 check_headers linux/perf_event.h
5980 check_headers libcrystalhd/libcrystalhd_if.h
5981 check_headers malloc.h
5982 check_headers net/udplite.h
5983 check_headers poll.h
5984 check_headers sys/param.h
5985 check_headers sys/resource.h
5986 check_headers sys/select.h
5987 check_headers sys/time.h
5988 check_headers sys/un.h
5989 check_headers termios.h
5990 check_headers unistd.h
5991 check_headers valgrind/valgrind.h
5992 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5993 check_headers windows.h
5994 check_headers X11/extensions/XvMClib.h
5995 check_headers asm/types.h
5996
5997 # it seems there are versions of clang in some distros that try to use the
5998 # gcc headers, which explodes for stdatomic
5999 # so we also check that atomics actually work here
6000 check_builtin stdatomic stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0); foo += bar"
6001
6002 check_lib advapi32 "windows.h"            RegCloseKey          -ladvapi32
6003 check_lib bcrypt   "windows.h bcrypt.h"   BCryptGenRandom      -lbcrypt &&
6004     check_cpp_condition bcrypt bcrypt.h "defined BCRYPT_RNG_ALGORITHM"
6005 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
6006 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
6007 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
6008
6009 check_lib android android/native_window.h ANativeWindow_acquire -landroid
6010 check_lib mediandk "stdint.h media/NdkImage.h" AImage_delete -lmediandk
6011 check_lib camera2ndk "stdbool.h stdint.h camera/NdkCameraManager.h" ACameraManager_create -lcamera2ndk
6012
6013 enabled appkit       && check_apple_framework AppKit
6014 enabled audiotoolbox && check_apple_framework AudioToolbox
6015 enabled avfoundation && check_apple_framework AVFoundation
6016 enabled coreimage    && check_apple_framework CoreImage
6017 enabled videotoolbox && check_apple_framework VideoToolbox
6018
6019 check_apple_framework CoreFoundation
6020 check_apple_framework CoreMedia
6021 check_apple_framework CoreVideo
6022
6023 enabled avfoundation && {
6024     disable coregraphics applicationservices
6025     check_lib coregraphics        CoreGraphics/CoreGraphics.h               CGGetActiveDisplayList "-framework CoreGraphics" ||
6026     check_lib applicationservices ApplicationServices/ApplicationServices.h CGGetActiveDisplayList "-framework ApplicationServices"; }
6027
6028 enabled videotoolbox && {
6029     check_lib coreservices CoreServices/CoreServices.h UTGetOSTypeFromString "-framework CoreServices"
6030     check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_HEVC "-framework CoreMedia"
6031     check_func_headers CoreVideo/CVPixelBuffer.h kCVPixelFormatType_420YpCbCr10BiPlanarVideoRange "-framework CoreVideo"
6032 }
6033
6034 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
6035
6036 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
6037 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
6038 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
6039 check_type "windows.h d3d11.h" "ID3D11VideoContext"
6040 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
6041
6042 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
6043
6044 if enabled cuda_sdk; then
6045     warn "Option --enable-cuda-sdk is deprecated. Use --enable-cuda-nvcc instead."
6046     enable cuda_nvcc
6047 fi
6048
6049 if ! disabled ffnvcodec; then
6050     ffnv_hdr_list="ffnvcodec/nvEncodeAPI.h ffnvcodec/dynlink_cuda.h ffnvcodec/dynlink_cuviddec.h ffnvcodec/dynlink_nvcuvid.h"
6051     check_pkg_config ffnvcodec "ffnvcodec >= 9.0.18.0" "$ffnv_hdr_list" "" || \
6052       check_pkg_config ffnvcodec "ffnvcodec >= 8.2.15.8 ffnvcodec < 8.3" "$ffnv_hdr_list" "" || \
6053       check_pkg_config ffnvcodec "ffnvcodec >= 8.1.24.9 ffnvcodec < 8.2" "$ffnv_hdr_list" "" || \
6054       check_pkg_config ffnvcodec "ffnvcodec >= 8.0.14.9 ffnvcodec < 8.1" "$ffnv_hdr_list" ""
6055 fi
6056
6057 check_cpp_condition winrt windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)"
6058
6059 if ! disabled w32threads && ! enabled pthreads; then
6060     check_func_headers "windows.h process.h" _beginthreadex &&
6061         check_type "windows.h" CONDITION_VARIABLE &&
6062         check_type "windows.h" INIT_ONCE &&
6063         enable w32threads || disable w32threads
6064     if ! enabled w32threads && enabled winrt; then
6065         check_func_headers "windows.h" CreateThread &&
6066             enable w32threads || disable w32threads
6067     fi
6068 fi
6069
6070 # check for some common methods of building with pthread support
6071 # do this before the optional library checks as some of them require pthreads
6072 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
6073     if check_lib pthreads pthread.h pthread_join   -pthread &&
6074        check_lib pthreads pthread.h pthread_create -pthread; then
6075         add_cflags -pthread
6076     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
6077          check_lib pthreads pthread.h pthread_create -pthreads; then
6078         add_cflags -pthreads
6079     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
6080          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
6081         add_cflags -ldl -pthread
6082     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
6083          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
6084         :
6085     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
6086          check_lib pthreads pthread.h pthread_create -lpthread; then
6087         :
6088     elif check_func pthread_join && check_func pthread_create; then
6089         enable pthreads
6090     fi
6091     check_cc pthreads "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER"
6092
6093     if enabled pthreads; then
6094         check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
6095         check_func pthread_cancel $pthreads_extralibs
6096     fi
6097 fi
6098
6099 enabled  zlib && { check_pkg_config zlib zlib "zlib.h" zlibVersion ||
6100                    check_lib zlib   zlib.h      zlibVersion    -lz; }
6101 enabled bzlib && check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
6102 enabled  lzma && check_lib lzma   lzma.h lzma_version_number -llzma
6103
6104 # On some systems dynamic loading requires no extra linker flags
6105 check_lib libdl dlfcn.h "dlopen dlsym" || check_lib libdl dlfcn.h "dlopen dlsym" -ldl
6106
6107 check_lib libm math.h sin -lm
6108
6109 atan2f_args=2
6110 copysign_args=2
6111 hypot_args=2
6112 ldexpf_args=2
6113 powf_args=2
6114
6115 for func in $MATH_FUNCS; do
6116     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
6117 done
6118
6119 for func in $COMPLEX_FUNCS; do
6120     eval check_complexfunc $func \${${func}_args:-1}
6121 done
6122
6123 # these are off by default, so fail if requested and not available
6124 enabled cuda_nvcc         && { check_nvcc || die "ERROR: failed checking for nvcc."; }
6125 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
6126 enabled decklink          && { require_headers DeckLinkAPI.h &&
6127                                { test_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a090500" || die "ERROR: Decklink API version must be >= 10.9.5."; } }
6128 enabled frei0r            && require_headers "frei0r.h dlfcn.h"
6129 enabled gmp               && require gmp gmp.h mpz_export -lgmp
6130 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
6131 enabled jni               && { [ $target_os = "android" ] && check_headers jni.h && enabled pthreads || die "ERROR: jni not found"; }
6132 enabled ladspa            && require_headers "ladspa.h dlfcn.h"
6133 enabled libaom            && require_pkg_config libaom "aom >= 1.0.0" aom/aom_codec.h aom_codec_version
6134 enabled libaribb24        && { check_pkg_config libaribb24 "aribb24 > 1.0.3" "aribb24/aribb24.h" arib_instance_new ||
6135                                { enabled gpl && require_pkg_config libaribb24 aribb24 "aribb24/aribb24.h" arib_instance_new; } ||
6136                                die "ERROR: libaribb24 requires version higher than 1.0.3 or --enable-gpl."; }
6137 enabled lv2               && require_pkg_config lv2 lilv-0 "lilv/lilv.h" lilv_world_new
6138 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
6139 enabled libass            && require_pkg_config libass libass ass/ass.h ass_library_init
6140 enabled libbluray         && require_pkg_config libbluray libbluray libbluray/bluray.h bd_open
6141 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
6142 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
6143                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
6144                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
6145 enabled libcaca           && require_pkg_config libcaca caca caca.h caca_create_canvas
6146 enabled libcodec2         && require libcodec2 codec2/codec2.h codec2_create -lcodec2
6147 enabled libdav1d          && require_pkg_config libdav1d "dav1d >= 0.2.1" "dav1d/dav1d.h" dav1d_version
6148 enabled libdavs2          && require_pkg_config libdavs2 "davs2 >= 1.6.0" davs2.h davs2_decoder_open
6149 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
6150 enabled libdrm            && require_pkg_config libdrm libdrm xf86drm.h drmGetVersion
6151 enabled libfdk_aac        && { check_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
6152                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
6153                                  warn "using libfdk without pkg-config"; } }
6154 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"
6155 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
6156 enabled fontconfig        && enable libfontconfig
6157 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
6158 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
6159 enabled libfribidi        && require_pkg_config libfribidi fribidi fribidi.h fribidi_version_info
6160 enabled libgme            && { check_pkg_config libgme libgme gme/gme.h gme_new_emu ||
6161                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }
6162 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
6163                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
6164                                done || die "ERROR: libgsm not found"; }
6165 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc $pthreads_extralibs
6166 enabled libklvanc         && require libklvanc libklvanc/vanc.h klvanc_context_create -lklvanc
6167 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
6168 enabled liblensfun        && require_pkg_config liblensfun lensfun lensfun.h lf_db_new
6169 # While it may appear that require is being used as a pkg-config
6170 # fallback for libmfx, it is actually being used to detect a different
6171 # installation route altogether.  If libmfx is installed via the Intel
6172 # Media SDK or Intel Media Server Studio, these don't come with
6173 # pkg-config support.  Instead, users should make sure that the build
6174 # can find the libraries and headers through other means.
6175 enabled libmfx            && { check_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit ||
6176                                { require libmfx "mfx/mfxvideo.h" MFXInit "-llibmfx $advapi32_extralibs" && warn "using libmfx without pkg-config"; } }
6177 enabled libmodplug        && require_pkg_config libmodplug libmodplug libmodplug/modplug.h ModPlug_Load
6178 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame $libm_extralibs
6179 enabled libmysofa         && { check_pkg_config libmysofa libmysofa mysofa.h mysofa_load ||
6180                                require libmysofa mysofa.h mysofa_load -lmysofa $zlib_extralibs; }
6181 enabled libnpp            && { check_lib libnpp npp.h nppGetLibVersion -lnppig -lnppicc -lnppc -lnppidei ||
6182                                check_lib libnpp npp.h nppGetLibVersion -lnppi -lnppc -lnppidei ||
6183                                die "ERROR: libnpp not found"; }
6184 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
6185 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
6186 enabled libopencv         && { check_headers opencv2/core/core_c.h &&
6187                                { check_pkg_config libopencv opencv opencv2/core/core_c.h cvCreateImageHeader ||
6188                                  require libopencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
6189                                require_pkg_config libopencv opencv opencv/cxcore.h cvCreateImageHeader; }
6190 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
6191 enabled libopenjpeg       && { check_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version ||
6192                                { require_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } }
6193 enabled libopenmpt        && require_pkg_config libopenmpt "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create -lstdc++ && append libopenmpt_extralibs "-lstdc++"
6194 enabled libopus           && {
6195     enabled libopus_decoder && {
6196         require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
6197     }
6198     enabled libopus_encoder && {
6199         require_pkg_config libopus opus opus_multistream.h opus_multistream_surround_encoder_create
6200     }
6201 }
6202 enabled libpulse          && require_pkg_config libpulse libpulse pulse/pulseaudio.h pa_context_new
6203 enabled librsvg           && require_pkg_config librsvg librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
6204 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
6205 enabled librubberband     && require_pkg_config librubberband "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new -lstdc++ && append librubberband_extralibs "-lstdc++"
6206 enabled libshine          && require_pkg_config libshine shine shine/layer3.h shine_encode_buffer
6207 enabled libsmbclient      && { check_pkg_config libsmbclient smbclient libsmbclient.h smbc_init ||
6208                                require libsmbclient libsmbclient.h smbc_init -lsmbclient; }
6209 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy -lstdc++
6210 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
6211 enabled libssh            && require_pkg_config libssh libssh libssh/sftp.h sftp_init
6212 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init
6213 enabled libsrt            && require_pkg_config libsrt "srt >= 1.3.0" srt/srt.h srt_socket
6214 enabled libtensorflow     && require libtensorflow tensorflow/c/c_api.h TF_Version -ltensorflow
6215 enabled libtesseract      && require_pkg_config libtesseract tesseract tesseract/capi.h TessBaseAPICreate
6216 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
6217 enabled libtls            && require_pkg_config libtls libtls tls.h tls_configure
6218 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
6219                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
6220                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
6221 enabled libv4l2           && require_pkg_config libv4l2 libv4l2 libv4l2.h v4l2_ioctl
6222 enabled libvidstab        && require_pkg_config libvidstab "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
6223 enabled libvmaf           && require_pkg_config libvmaf "libvmaf >= 1.3.9" libvmaf.h compute_vmaf
6224 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
6225 enabled libvorbis         && require_pkg_config libvorbis vorbis vorbis/codec.h vorbis_info_init &&
6226                              require_pkg_config libvorbisenc vorbisenc vorbis/vorbisenc.h vorbis_encode_init
6227
6228 enabled libvpx            && {
6229     enabled libvpx_vp8_decoder && {
6230         check_pkg_config libvpx_vp8_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
6231             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"
6232     }
6233     enabled libvpx_vp8_encoder && {
6234         check_pkg_config libvpx_vp8_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
6235             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"
6236     }
6237     enabled libvpx_vp9_decoder && {
6238         check_pkg_config libvpx_vp9_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
6239             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"
6240     }
6241     enabled libvpx_vp9_encoder && {
6242         check_pkg_config libvpx_vp9_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
6243             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"
6244     }
6245     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
6246         die "libvpx enabled but no supported decoders found"
6247     fi
6248 }
6249
6250 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
6251 enabled libwebp           && {
6252     enabled libwebp_encoder      && require_pkg_config libwebp "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
6253     enabled libwebp_anim_encoder && check_pkg_config libwebp_anim_encoder "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit; }
6254 enabled libx264           && { check_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode ||
6255                                { require libx264 "stdint.h x264.h" x264_encoder_encode "-lx264 $pthreads_extralibs $libm_extralibs" &&
6256                                  warn "using libx264 without pkg-config"; } } &&
6257                              require_cpp_condition libx264 x264.h "X264_BUILD >= 118" &&
6258                              check_cpp_condition libx262 x264.h "X264_MPEG2"
6259 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
6260                              require_cpp_condition libx265 x265.h "X265_BUILD >= 68"
6261 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode "-lxavs $pthreads_extralibs $libm_extralibs"
6262 enabled libxavs2          && require_pkg_config libxavs2 "xavs2 >= 1.3.0" "stdint.h xavs2.h" xavs2_api_get
6263 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
6264 enabled libzimg           && require_pkg_config libzimg "zimg >= 2.7.0" zimg.h zimg_get_api_version
6265 enabled libzmq            && require_pkg_config libzmq libzmq zmq.h zmq_ctx_new
6266 enabled libzvbi           && require_pkg_config libzvbi zvbi-0.2 libzvbi.h vbi_decoder_new &&
6267                              { test_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
6268                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
6269 enabled libxml2           && require_pkg_config libxml2 libxml-2.0 libxml2/libxml/xmlversion.h xmlCheckVersion
6270 enabled mbedtls           && { check_pkg_config mbedtls mbedtls mbedtls/x509_crt.h mbedtls_x509_crt_init ||
6271                                check_pkg_config mbedtls mbedtls mbedtls/ssl.h mbedtls_ssl_init ||
6272                                check_lib mbedtls mbedtls/ssl.h mbedtls_ssl_init -lmbedtls -lmbedx509 -lmbedcrypto ||
6273                                die "ERROR: mbedTLS not found"; }
6274 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
6275 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
6276                                { ! enabled cross_compile &&
6277                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
6278                                  add_ldflags -L/opt/vc/lib/ &&
6279                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
6280                                die "ERROR: mmal not found" &&
6281                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
6282 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
6283                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
6284                                die "ERROR: openal not found"; } &&
6285                              { test_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
6286                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
6287 enabled opencl            && { check_pkg_config opencl OpenCL CL/cl.h clEnqueueNDRangeKernel ||
6288                                check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
6289                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
6290                                die "ERROR: opencl not found"; } &&
6291                              { test_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
6292                                test_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
6293                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
6294 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
6295                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
6296                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
6297                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
6298                                die "ERROR: opengl not found."
6299                              }
6300 enabled omx               && require_headers OMX_Core.h
6301 enabled omx_rpi           && { check_headers OMX_Core.h ||
6302                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_headers OMX_Core.h ; } ||
6303                                die "ERROR: OpenMAX IL headers not found"; } && enable omx
6304 enabled openssl           && { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
6305                                check_pkg_config openssl openssl openssl/ssl.h SSL_library_init ||
6306                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
6307                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
6308                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
6309                                die "ERROR: openssl not found"; }
6310 enabled pocketsphinx      && require_pkg_config pocketsphinx pocketsphinx pocketsphinx/pocketsphinx.h ps_init
6311 enabled rkmpp             && { require_pkg_config rkmpp rockchip_mpp  rockchip/rk_mpi.h mpp_create &&
6312                                require_pkg_config rockchip_mpp "rockchip_mpp >= 1.3.7" rockchip/rk_mpi.h mpp_create &&
6313                                { enabled libdrm ||
6314                                  die "ERROR: rkmpp requires --enable-libdrm"; }
6315                              }
6316 enabled vapoursynth       && require_pkg_config vapoursynth "vapoursynth-script >= 42" VSScript.h vsscript_init
6317
6318
6319 if enabled gcrypt; then
6320     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
6321     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
6322         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
6323         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
6324         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
6325             die "ERROR: gcrypt not found"
6326         add_cflags $gcrypt_cflags
6327     else
6328         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
6329     fi
6330 fi
6331
6332 if enabled sdl2; then
6333     SDL2_CONFIG="${cross_prefix}sdl2-config"
6334     test_pkg_config sdl2 "sdl2 >= 2.0.1 sdl2 < 2.1.0" SDL_events.h SDL_PollEvent
6335     if disabled sdl2 && "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6336         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6337         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6338         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6339         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6340         check_func_headers SDL_events.h SDL_PollEvent $sdl2_extralibs $sdl2_cflags &&
6341             enable sdl2
6342     fi
6343     if test $target_os = "mingw32"; then
6344         sdl2_extralibs=$(filter_out '-mwindows' $sdl2_extralibs)
6345     fi
6346 fi
6347
6348 if enabled decklink; then
6349     case $target_os in
6350         mingw32*|mingw64*|win32|win64)
6351             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6352             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6353             ;;
6354     esac
6355 fi
6356
6357 enabled securetransport &&
6358     check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6359     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" ||
6360         disable securetransport
6361
6362 enabled securetransport &&
6363     check_func SecItemImport "-Wl,-framework,CoreFoundation -Wl,-framework,Security"
6364
6365 enabled schannel &&
6366     check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6367     test_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" &&
6368     schannel_extralibs="-lsecur32" ||
6369         disable schannel
6370
6371 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6372 enabled makeinfo \
6373     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6374     && enable makeinfo_html || disable makeinfo_html
6375 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6376 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6377 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6378 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6379
6380 # check V4L2 codecs available in the API
6381 check_headers linux/fb.h
6382 check_headers linux/videodev2.h
6383 test_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6384 check_cc v4l2_m2m linux/videodev2.h "int i = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_VIDEO_M2M | V4L2_BUF_FLAG_LAST;"
6385 check_cc vc1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VC1_ANNEX_G;"
6386 check_cc mpeg1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG1;"
6387 check_cc mpeg2_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG2;"
6388 check_cc mpeg4_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG4;"
6389 check_cc hevc_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_HEVC;"
6390 check_cc h263_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H263;"
6391 check_cc h264_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H264;"
6392 check_cc vp8_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP8;"
6393 check_cc vp9_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP9;"
6394
6395 check_headers sys/videoio.h
6396 test_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6397
6398 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6399 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6400 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6401 # w32api 3.12 had it defined wrong
6402 check_cpp_condition vfwcap_defines vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER"
6403
6404 check_type "dshow.h" IBaseFilter
6405
6406 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6407 check_headers "dev/bktr/ioctl_meteor.h dev/bktr/ioctl_bt848.h"                   ||
6408     check_headers "machine/ioctl_meteor.h machine/ioctl_bt848.h"                 ||
6409     check_headers "dev/video/meteor/ioctl_meteor.h dev/video/bktr/ioctl_bt848.h" ||
6410     check_headers "dev/ic/bt8xx.h"
6411
6412 if check_struct sys/soundcard.h audio_buf_info bytes; then
6413     enable_sanitized sys/soundcard.h
6414 else
6415     test_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_sanitized sys/soundcard.h
6416     #include <sys/soundcard.h>
6417     audio_buf_info abc;
6418 EOF
6419 fi
6420
6421 enabled alsa && check_pkg_config alsa alsa "alsa/asoundlib.h" snd_pcm_htimestamp ||
6422     check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
6423
6424 enabled libjack &&
6425     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
6426
6427 enabled sndio && check_lib sndio sndio.h sio_open -lsndio
6428
6429 if enabled libcdio; then
6430     check_pkg_config libcdio libcdio_paranoia "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open ||
6431     check_pkg_config libcdio libcdio_paranoia "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open ||
6432     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6433     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6434     die "ERROR: No usable libcdio/cdparanoia found"
6435 fi
6436
6437 enabled libxcb && check_pkg_config libxcb "xcb >= 1.4" xcb/xcb.h xcb_connect ||
6438     disable libxcb_shm libxcb_shape libxcb_xfixes
6439
6440 if enabled libxcb; then
6441     enabled libxcb_shm    && check_pkg_config libxcb_shm    xcb-shm    xcb/shm.h    xcb_shm_attach
6442     enabled libxcb_shape  && check_pkg_config libxcb_shape  xcb-shape  xcb/shape.h  xcb_shape_get_rectangles
6443     enabled libxcb_xfixes && check_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
6444 fi
6445
6446 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6447
6448 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6449 # the desktop api partition
6450 test_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
6451 #ifdef WINAPI_FAMILY
6452 #include <winapifamily.h>
6453 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
6454 #error desktop, not uwp
6455 #else
6456 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
6457 #endif
6458 #else
6459 #error no family set
6460 #endif
6461 EOF
6462
6463 enabled vaapi &&
6464     check_pkg_config vaapi "libva >= 0.35.0" "va/va.h" vaInitialize
6465
6466 if enabled vaapi; then
6467     check_pkg_config vaapi_drm "libva-drm" "va/va_drm.h" vaGetDisplayDRM
6468
6469     if enabled xlib; then
6470         check_pkg_config vaapi_x11 "libva-x11" "va/va_x11.h" vaGetDisplay
6471     fi
6472
6473     check_cpp_condition vaapi_1 "va/va.h" "VA_CHECK_VERSION(1, 0, 0)"
6474
6475     check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
6476     check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
6477     check_struct "va/va.h va/va_vpp.h" "VAProcPipelineCaps" rotation_flags
6478     check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
6479     check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
6480     check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
6481     check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
6482 fi
6483
6484 if enabled_all opencl libdrm ; then
6485     check_type "CL/cl_intel.h" "clCreateImageFromFdINTEL_fn" &&
6486         enable opencl_drm_beignet
6487     check_func_headers "CL/cl_ext.h" clImportMemoryARM &&
6488         enable opencl_drm_arm
6489 fi
6490
6491 if enabled_all opencl vaapi ; then
6492     if enabled opencl_drm_beignet ; then
6493         enable opencl_vaapi_beignet
6494     else
6495         check_type "CL/cl.h CL/cl_va_api_media_sharing_intel.h" "clCreateFromVA_APIMediaSurfaceINTEL_fn" &&
6496             enable opencl_vaapi_intel_media
6497     fi
6498 fi
6499
6500 if enabled_all opencl dxva2 ; then
6501     check_type "CL/cl_dx9_media_sharing.h" cl_dx9_surface_info_khr &&
6502         enable opencl_dxva2
6503 fi
6504
6505 if enabled_all opencl d3d11va ; then
6506     check_type "CL/cl_d3d11.h" clGetDeviceIDsFromD3D11KHR_fn &&
6507         enable opencl_d3d11
6508 fi
6509
6510 enabled vdpau &&
6511     check_cpp_condition vdpau vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP"
6512
6513 enabled vdpau &&
6514     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6515
6516 enabled crystalhd && check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
6517
6518 if enabled x86; then
6519     case $target_os in
6520         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6521             ;;
6522         *)
6523             disable ffnvcodec cuvid nvdec nvenc
6524             ;;
6525     esac
6526 elif enabled ppc64 && ! enabled bigendian; then
6527     case $target_os in
6528         linux)
6529             ;;
6530         *)
6531             disable ffnvcodec cuvid nvdec nvenc
6532             ;;
6533     esac
6534 else
6535     disable ffnvcodec cuvid nvdec nvenc
6536 fi
6537
6538 enabled ffnvcodec && enable cuda
6539
6540 enabled nvenc &&
6541     test_cc -I$source_path <<EOF || disable nvenc
6542 #include <ffnvcodec/nvEncodeAPI.h>
6543 NV_ENCODE_API_FUNCTION_LIST flist;
6544 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6545 int main(void) { return 0; }
6546 EOF
6547
6548 enabled amf &&
6549     check_cpp_condition amf "AMF/core/Version.h" \
6550         "(AMF_VERSION_MAJOR << 48 | AMF_VERSION_MINOR << 32 | AMF_VERSION_RELEASE << 16 | AMF_VERSION_BUILD_NUM) >= 0x0001000400040001"
6551
6552 # Funny iconv installations are not unusual, so check it after all flags have been set
6553 if enabled libc_iconv; then
6554     check_func_headers iconv.h iconv
6555 elif enabled iconv; then
6556     check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6557 fi
6558
6559 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6560
6561 # add some useful compiler flags if supported
6562 check_cflags -Wdeclaration-after-statement
6563 check_cflags -Wall
6564 check_cflags -Wdisabled-optimization
6565 check_cflags -Wpointer-arith
6566 check_cflags -Wredundant-decls
6567 check_cflags -Wwrite-strings
6568 check_cflags -Wtype-limits
6569 check_cflags -Wundef
6570 check_cflags -Wmissing-prototypes
6571 check_cflags -Wno-pointer-to-int-cast
6572 check_cflags -Wstrict-prototypes
6573 check_cflags -Wempty-body
6574
6575 if enabled extra_warnings; then
6576     check_cflags -Wcast-qual
6577     check_cflags -Wextra
6578     check_cflags -Wpedantic
6579 fi
6580
6581 check_disable_warning(){
6582     warning_flag=-W${1#-Wno-}
6583     test_cflags $unknown_warning_flags $warning_flag && add_cflags $1
6584 }
6585
6586 test_cflags -Werror=unused-command-line-argument &&
6587     append unknown_warning_flags "-Werror=unused-command-line-argument"
6588 test_cflags -Werror=unknown-warning-option &&
6589     append unknown_warning_flags "-Werror=unknown-warning-option"
6590
6591 check_disable_warning -Wno-parentheses
6592 check_disable_warning -Wno-switch
6593 check_disable_warning -Wno-format-zero-length
6594 check_disable_warning -Wno-pointer-sign
6595 check_disable_warning -Wno-unused-const-variable
6596 check_disable_warning -Wno-bool-operation
6597 check_disable_warning -Wno-char-subscripts
6598
6599 check_disable_warning_headers(){
6600     warning_flag=-W${1#-Wno-}
6601     test_cflags $warning_flag && add_cflags_headers $1
6602 }
6603
6604 check_disable_warning_headers -Wno-deprecated-declarations
6605 check_disable_warning_headers -Wno-unused-variable
6606
6607 test_cc <<EOF && enable blocks_extension
6608 void (^block)(void);
6609 EOF
6610
6611 # add some linker flags
6612 check_ldflags -Wl,--warn-common
6613 check_ldflags -Wl,-rpath-link=:libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6614 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir && add_ldsoflags -Wl,-rpath,$libdir
6615 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6616
6617 # add some strip flags
6618 check_stripflags -x
6619
6620 enabled neon_clobber_test &&
6621     check_ldflags -Wl,--wrap,avcodec_open2              \
6622                   -Wl,--wrap,avcodec_decode_audio4      \
6623                   -Wl,--wrap,avcodec_decode_video2      \
6624                   -Wl,--wrap,avcodec_decode_subtitle2   \
6625                   -Wl,--wrap,avcodec_encode_audio2      \
6626                   -Wl,--wrap,avcodec_encode_video2      \
6627                   -Wl,--wrap,avcodec_encode_subtitle    \
6628                   -Wl,--wrap,avcodec_send_packet        \
6629                   -Wl,--wrap,avcodec_receive_packet     \
6630                   -Wl,--wrap,avcodec_send_frame         \
6631                   -Wl,--wrap,avcodec_receive_frame      \
6632                   -Wl,--wrap,swr_convert                \
6633                   -Wl,--wrap,avresample_convert ||
6634     disable neon_clobber_test
6635
6636 enabled xmm_clobber_test &&
6637     check_ldflags -Wl,--wrap,avcodec_open2              \
6638                   -Wl,--wrap,avcodec_decode_audio4      \
6639                   -Wl,--wrap,avcodec_decode_video2      \
6640                   -Wl,--wrap,avcodec_decode_subtitle2   \
6641                   -Wl,--wrap,avcodec_encode_audio2      \
6642                   -Wl,--wrap,avcodec_encode_video2      \
6643                   -Wl,--wrap,avcodec_encode_subtitle    \
6644                   -Wl,--wrap,avcodec_send_packet        \
6645                   -Wl,--wrap,avcodec_receive_packet     \
6646                   -Wl,--wrap,avcodec_send_frame         \
6647                   -Wl,--wrap,avcodec_receive_frame      \
6648                   -Wl,--wrap,swr_convert                \
6649                   -Wl,--wrap,avresample_convert         \
6650                   -Wl,--wrap,sws_scale ||
6651     disable xmm_clobber_test
6652
6653 check_ld "cc" proper_dce <<EOF
6654 extern const int array[512];
6655 static inline int func(void) { return array[0]; }
6656 int main(void) { return 0; }
6657 EOF
6658
6659 if enabled proper_dce; then
6660     echo "X { local: *; };" > $TMPV
6661     if test_ldflags -Wl,${version_script},$TMPV; then
6662         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6663         quotes='""'
6664         test_cc <<EOF && enable symver_asm_label
6665 void ff_foo(void) __asm__ ("av_foo@VERSION");
6666 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6667 EOF
6668         test_cc <<EOF && enable symver_gnu_asm
6669 __asm__(".symver ff_foo,av_foo@VERSION");
6670 void ff_foo(void) {}
6671 EOF
6672     fi
6673 fi
6674
6675 if [ -z "$optflags" ]; then
6676     if enabled small; then
6677         optflags=$cflags_size
6678     elif enabled optimizations; then
6679         optflags=$cflags_speed
6680     else
6681         optflags=$cflags_noopt
6682     fi
6683 fi
6684
6685 if [ -z "$nvccflags" ]; then
6686     nvccflags=$nvccflags_default
6687 fi
6688
6689 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6690     nvccflags="$nvccflags -m64"
6691 else
6692     nvccflags="$nvccflags -m32"
6693 fi
6694
6695 check_optflags(){
6696     check_cflags "$@"
6697     enabled lto && check_ldflags "$@"
6698 }
6699
6700 check_optflags $optflags
6701 check_optflags -fno-math-errno
6702 check_optflags -fno-signed-zeros
6703
6704 if enabled lto; then
6705     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6706     check_cflags  -flto
6707     check_ldflags -flto $cpuflags
6708     disable inline_asm_direct_symbol_refs
6709 fi
6710
6711 enabled ftrapv && check_cflags -ftrapv
6712
6713 test_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6714 int x;
6715 EOF
6716
6717
6718 if enabled icc; then
6719     # Just warnings, no remarks
6720     check_cflags -w1
6721     # -wd: Disable following warnings
6722     # 144, 167, 556: -Wno-pointer-sign
6723     # 188: enumerated type mixed with another type
6724     # 1292: attribute "foo" ignored
6725     # 1419: external declaration in primary source file
6726     # 10006: ignoring unknown option -fno-signed-zeros
6727     # 10148: ignoring unknown option -Wno-parentheses
6728     # 10156: ignoring option '-W'; no argument required
6729     # 13200: No EMMS instruction before call to function
6730     # 13203: No EMMS instruction before return from function
6731     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6732     # 11030: Warning unknown option --as-needed
6733     # 10156: ignoring option '-export'; no argument required
6734     check_ldflags -wd10156,11030
6735     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6736     enable ebp_available
6737     # The test above does not test linking
6738     enabled lto && disable symver_asm_label
6739     if enabled x86_32; then
6740         icc_version=$($cc -dumpversion)
6741         test ${icc_version%%.*} -ge 11 &&
6742             check_cflags -falign-stack=maintain-16-byte ||
6743             disable aligned_stack
6744     fi
6745 elif enabled gcc; then
6746     check_optflags -fno-tree-vectorize
6747     check_cflags -Werror=format-security
6748     check_cflags -Werror=implicit-function-declaration
6749     check_cflags -Werror=missing-prototypes
6750     check_cflags -Werror=return-type
6751     check_cflags -Werror=vla
6752     check_cflags -Wformat
6753     check_cflags -fdiagnostics-color=auto
6754     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6755     if enabled x86_32; then
6756         case $target_os in
6757         *bsd*)
6758             # BSDs don't guarantee a 16 byte aligned stack, but we can
6759             # request GCC to try to maintain 16 byte alignment throughout
6760             # function calls. Library entry points that might call assembly
6761             # functions align the stack. (The parameter means 2^4 bytes.)
6762             check_cflags -mpreferred-stack-boundary=4
6763             ;;
6764         esac
6765     fi
6766 elif enabled llvm_gcc; then
6767     check_cflags -mllvm -stack-alignment=16
6768 elif enabled clang; then
6769     if enabled x86_32; then
6770         # Clang doesn't support maintaining alignment without assuming the
6771         # same alignment in every function. If 16 byte alignment would be
6772         # enabled, one would also have to either add attribute_align_arg on
6773         # every single entry point into the libraries or enable -mstackrealign
6774         # (doing stack realignment in every single function).
6775         case $target_os in
6776         mingw32|win32|*bsd*)
6777             disable aligned_stack
6778             ;;
6779         *)
6780             check_cflags -mllvm -stack-alignment=16
6781             check_cflags -mstack-alignment=16
6782             ;;
6783         esac
6784     else
6785         check_cflags -mllvm -stack-alignment=16
6786         check_cflags -mstack-alignment=16
6787     fi
6788     check_cflags -Qunused-arguments
6789     check_cflags -Werror=implicit-function-declaration
6790     check_cflags -Werror=missing-prototypes
6791     check_cflags -Werror=return-type
6792 elif enabled cparser; then
6793     add_cflags -Wno-missing-variable-declarations
6794     add_cflags -Wno-empty-statement
6795 elif enabled armcc; then
6796     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6797     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6798     # 2523: use of inline assembly is deprecated
6799     add_cflags -W${armcc_opt},--diag_suppress=2523
6800     add_cflags -W${armcc_opt},--diag_suppress=1207
6801     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6802     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6803     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6804     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6805 elif enabled pathscale; then
6806     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6807     disable inline_asm
6808 elif enabled_any msvc icl; then
6809     enabled x86_32 && disable aligned_stack
6810     enabled_all x86_32 debug && add_cflags -Oy-
6811     enabled debug && add_ldflags -debug
6812     enable pragma_deprecated
6813     if enabled icl; then
6814         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6815         # (correctly) on icl 13.x.
6816         test_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6817             add_cflags -Qansi-alias
6818         # Some inline asm is not compilable in debug
6819         if enabled debug; then
6820             disable ebp_available
6821             disable ebx_available
6822         fi
6823     fi
6824     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6825     check_cpp_condition log2 crtversion.h "_VC_CRT_MAJOR_VERSION >= 12"
6826     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6827     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6828     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6829     # MSVC 2013 and newer can handle it fine.
6830     # If this declspec fails, force including stdlib.h before the restrict redefinition
6831     # happens in config.h.
6832     if [ $restrict_keyword != restrict ]; then
6833         test_cc <<EOF || add_cflags -FIstdlib.h
6834 __declspec($restrict_keyword) void *foo(int);
6835 EOF
6836     fi
6837     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6838     # Issue has been fixed in MSVC v19.00.24218.
6839     test_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6840         check_cflags -d2SSAOptimizer-
6841     # enable utf-8 source processing on VS2015 U2 and newer
6842     test_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6843         add_cflags -utf-8
6844 fi
6845
6846 for pfx in "" host_; do
6847     varname=${pfx%_}cc_type
6848     eval "type=\$$varname"
6849     if [ "$type" = "msvc" ]; then
6850         test_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6851 static inline int foo(int a) { return a; }
6852 EOF
6853     fi
6854 done
6855
6856 case $as_type in
6857     clang)
6858         add_asflags -Qunused-arguments
6859     ;;
6860 esac
6861
6862 case $ld_type in
6863     clang)
6864         check_ldflags -Qunused-arguments
6865     ;;
6866 esac
6867
6868 enable frame_thread_encoder
6869
6870 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6871
6872 check_deps $CONFIG_LIST       \
6873            $CONFIG_EXTRA      \
6874            $HAVE_LIST         \
6875            $ALL_COMPONENTS    \
6876
6877 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"
6878 enabled avresample && warn "Building with deprecated library libavresample"
6879
6880 case $target_os in
6881 haiku)
6882     disable memalign
6883     disable posix_memalign
6884     ;;
6885 *-dos|freedos|opendos)
6886     if test_cpp_condition sys/version.h "defined(__DJGPP__) && __DJGPP__ == 2 && __DJGPP_MINOR__ == 5"; then
6887         disable memalign
6888     fi
6889     ;;
6890 esac
6891
6892 flatten_extralibs(){
6893     nested_entries=
6894     list_name=$1
6895     eval list=\$${1}
6896     for entry in $list; do
6897         entry_copy=$entry
6898         resolve entry_copy
6899         flat_entries=
6900         for e in $entry_copy; do
6901             case $e in
6902                 *_extralibs) nested_entries="$nested_entries$e ";;
6903                           *) flat_entries="$flat_entries$e ";;
6904             esac
6905         done
6906         eval $entry="\$flat_entries"
6907     done
6908     append $list_name "$nested_entries"
6909
6910     resolve nested_entries
6911     if test -n "$(filter '*_extralibs' $nested_entries)"; then
6912         flatten_extralibs $list_name
6913     fi
6914 }
6915
6916 flatten_extralibs_wrapper(){
6917     list_name=$1
6918     flatten_extralibs $list_name
6919     unique $list_name
6920     resolve $list_name
6921     eval $list_name=\$\(\$ldflags_filter \$$list_name\)
6922     eval printf \''%s'\' \""\$$list_name"\"
6923 }
6924
6925 for linkunit in $LIBRARY_LIST; do
6926     unset current_extralibs
6927     eval components=\$$(toupper ${linkunit})_COMPONENTS_LIST
6928     for comp in ${components}; do
6929         enabled $comp || continue
6930         comp_extralibs="${comp}_extralibs"
6931         append current_extralibs $comp_extralibs
6932     done
6933     eval prepend ${linkunit}_extralibs $current_extralibs
6934 done
6935
6936 for linkunit in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
6937     eval ${linkunit}_extralibs=\$\(flatten_extralibs_wrapper ${linkunit}_extralibs\)
6938 done
6939
6940 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6941
6942 for thread in $THREADS_LIST; do
6943     if enabled $thread; then
6944         test -n "$thread_type" &&
6945             die "ERROR: Only one thread type must be selected." ||
6946             thread_type="$thread"
6947     fi
6948 done
6949
6950 if disabled stdatomic; then
6951     if enabled atomics_gcc; then
6952         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6953     elif enabled atomics_win32; then
6954         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6955     elif enabled atomics_suncc; then
6956         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6957     elif enabled pthreads; then
6958         add_compat atomics/pthread/stdatomic.o
6959         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6960     else
6961         enabled threads && die "Threading is enabled, but no atomics are available"
6962         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6963     fi
6964 fi
6965
6966 # Check if requested libraries were found.
6967 for lib in $AUTODETECT_LIBS; do
6968     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6969 done
6970
6971 enabled zlib && add_cppflags -DZLIB_CONST
6972
6973 # conditional library dependencies, in any order
6974 enabled afftdn_filter       && prepend avfilter_deps "avcodec"
6975 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6976 enabled afir_filter         && prepend avfilter_deps "avcodec"
6977 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6978 enabled aresample_filter    && prepend avfilter_deps "swresample"
6979 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6980 enabled bm3d_filter         && prepend avfilter_deps "avcodec"
6981 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6982 enabled convolve_filter     && prepend avfilter_deps "avcodec"
6983 enabled deconvolve_filter   && prepend avfilter_deps "avcodec"
6984 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6985 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6986 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6987 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6988 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
6989 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6990 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6991 enabled pan_filter          && prepend avfilter_deps "swresample"
6992 enabled pp_filter           && prepend avfilter_deps "postproc"
6993 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6994 enabled resample_filter && prepend avfilter_deps "avresample"
6995 enabled sab_filter          && prepend avfilter_deps "swscale"
6996 enabled scale_filter    && prepend avfilter_deps "swscale"
6997 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6998 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6999 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
7000 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
7001 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
7002 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
7003 enabled smartblur_filter    && prepend avfilter_deps "swscale"
7004 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
7005 enabled spp_filter          && prepend avfilter_deps "avcodec"
7006 enabled sr_filter           && prepend avfilter_deps "avformat swscale"
7007 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
7008 enabled uspp_filter         && prepend avfilter_deps "avcodec"
7009 enabled zoompan_filter      && prepend avfilter_deps "swscale"
7010
7011 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
7012
7013 #FIXME
7014 enabled_any sdl2_outdev opengl_outdev && enabled sdl2 &&
7015     add_cflags $(filter_out '-Dmain=SDL_main' $sdl2_cflags)
7016
7017 enabled opus_decoder    && prepend avcodec_deps "swresample"
7018
7019 # reorder the items at var $1 to align with the items order at var $2 .
7020 # die if an item at $1 is not at $2 .
7021 reorder_by(){
7022     eval rb_in=\$$1
7023     eval rb_ordered=\$$2
7024
7025     for rb in $rb_in; do
7026         is_in $rb $rb_ordered || die "$rb at \$$1 is not at \$$2"
7027     done
7028
7029     rb_out=
7030     for rb in $rb_ordered; do
7031         is_in $rb $rb_in && rb_out="$rb_out$rb "
7032     done
7033     eval $1=\$rb_out
7034 }
7035
7036 # deps-expand fflib $1:  N x {append all expanded deps; unique}
7037 # within a set of N items, N expansions are enough to expose a cycle.
7038 expand_deps(){
7039     unique ${1}_deps  # required for the early break test.
7040     for dummy in $LIBRARY_LIST; do  # N iteratios
7041         eval deps=\$${1}_deps
7042         append ${1}_deps $(map 'eval echo \$${v}_deps' $deps)
7043         unique ${1}_deps
7044         eval '[ ${#deps} = ${#'${1}_deps'} ]' && break  # doesn't expand anymore
7045     done
7046
7047     eval is_in $1 \$${1}_deps && die "Dependency cycle at ${1}_deps"
7048     reorder_by ${1}_deps LIBRARY_LIST  # linking order is expected later
7049 }
7050
7051 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
7052 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
7053
7054 map 'expand_deps $v' $LIBRARY_LIST
7055
7056 if test "$quiet" != "yes"; then
7057
7058 echo "install prefix            $prefix"
7059 echo "source path               $source_path"
7060 echo "C compiler                $cc"
7061 echo "C library                 $libc_type"
7062 if test "$host_cc" != "$cc"; then
7063     echo "host C compiler           $host_cc"
7064     echo "host C library            $host_libc_type"
7065 fi
7066 echo "ARCH                      $arch ($cpu)"
7067 if test "$build_suffix" != ""; then
7068     echo "build suffix              $build_suffix"
7069 fi
7070 if test "$progs_suffix" != ""; then
7071     echo "progs suffix              $progs_suffix"
7072 fi
7073 if test "$extra_version" != ""; then
7074     echo "version string suffix     $extra_version"
7075 fi
7076 echo "big-endian                ${bigendian-no}"
7077 echo "runtime cpu detection     ${runtime_cpudetect-no}"
7078 if enabled x86; then
7079     echo "standalone assembly       ${x86asm-no}"
7080     echo "x86 assembler             ${x86asmexe}"
7081     echo "MMX enabled               ${mmx-no}"
7082     echo "MMXEXT enabled            ${mmxext-no}"
7083     echo "3DNow! enabled            ${amd3dnow-no}"
7084     echo "3DNow! extended enabled   ${amd3dnowext-no}"
7085     echo "SSE enabled               ${sse-no}"
7086     echo "SSSE3 enabled             ${ssse3-no}"
7087     echo "AESNI enabled             ${aesni-no}"
7088     echo "AVX enabled               ${avx-no}"
7089     echo "AVX2 enabled              ${avx2-no}"
7090     echo "AVX-512 enabled           ${avx512-no}"
7091     echo "XOP enabled               ${xop-no}"
7092     echo "FMA3 enabled              ${fma3-no}"
7093     echo "FMA4 enabled              ${fma4-no}"
7094     echo "i686 features enabled     ${i686-no}"
7095     echo "CMOV is fast              ${fast_cmov-no}"
7096     echo "EBX available             ${ebx_available-no}"
7097     echo "EBP available             ${ebp_available-no}"
7098 fi
7099 if enabled aarch64; then
7100     echo "NEON enabled              ${neon-no}"
7101     echo "VFP enabled               ${vfp-no}"
7102 fi
7103 if enabled arm; then
7104     echo "ARMv5TE enabled           ${armv5te-no}"
7105     echo "ARMv6 enabled             ${armv6-no}"
7106     echo "ARMv6T2 enabled           ${armv6t2-no}"
7107     echo "VFP enabled               ${vfp-no}"
7108     echo "NEON enabled              ${neon-no}"
7109     echo "THUMB enabled             ${thumb-no}"
7110 fi
7111 if enabled mips; then
7112     echo "MIPS FPU enabled          ${mipsfpu-no}"
7113     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
7114     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
7115     echo "MIPS MSA enabled          ${msa-no}"
7116     echo "LOONGSON MMI enabled      ${mmi-no}"
7117 fi
7118 if enabled ppc; then
7119     echo "AltiVec enabled           ${altivec-no}"
7120     echo "VSX enabled               ${vsx-no}"
7121     echo "POWER8 enabled            ${power8-no}"
7122     echo "PPC 4xx optimizations     ${ppc4xx-no}"
7123     echo "dcbzl available           ${dcbzl-no}"
7124 fi
7125 echo "debug symbols             ${debug-no}"
7126 echo "strip symbols             ${stripping-no}"
7127 echo "optimize for size         ${small-no}"
7128 echo "optimizations             ${optimizations-no}"
7129 echo "static                    ${static-no}"
7130 echo "shared                    ${shared-no}"
7131 echo "postprocessing support    ${postproc-no}"
7132 echo "network support           ${network-no}"
7133 echo "threading support         ${thread_type-no}"
7134 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
7135 echo "texi2html enabled         ${texi2html-no}"
7136 echo "perl enabled              ${perl-no}"
7137 echo "pod2man enabled           ${pod2man-no}"
7138 echo "makeinfo enabled          ${makeinfo-no}"
7139 echo "makeinfo supports HTML    ${makeinfo_html-no}"
7140 test -n "$random_seed" &&
7141     echo "random seed               ${random_seed}"
7142 echo
7143
7144 echo "External libraries:"
7145 print_enabled '' $EXTERNAL_LIBRARY_LIST $EXTERNAL_AUTODETECT_LIBRARY_LIST | print_in_columns
7146 echo
7147
7148 echo "External libraries providing hardware acceleration:"
7149 print_enabled '' $HWACCEL_LIBRARY_LIST $HWACCEL_AUTODETECT_LIBRARY_LIST | print_in_columns
7150 echo
7151
7152 echo "Libraries:"
7153 print_enabled '' $LIBRARY_LIST | print_in_columns
7154 echo
7155
7156 echo "Programs:"
7157 print_enabled '' $PROGRAM_LIST | print_in_columns
7158 echo
7159
7160 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
7161     echo "Enabled ${type}s:"
7162     eval list=\$$(toupper $type)_LIST
7163     print_enabled '_*' $list | print_in_columns
7164     echo
7165 done
7166
7167 if test -n "$ignore_tests"; then
7168     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
7169     echo "Ignored FATE tests:"
7170     echo $ignore_tests | print_in_columns
7171     echo
7172 fi
7173
7174 echo "License: $license"
7175
7176 fi # test "$quiet" != "yes"
7177
7178 if test -n "$WARN_IF_GETS_DISABLED_LIST"; then
7179     for cfg in $WARN_IF_GETS_DISABLED_LIST; do
7180         if disabled $cfg; then
7181             varname=${cfg}_disable_reason
7182             eval "warn \"Disabled $cfg because \$$varname\""
7183         fi
7184     done
7185 fi
7186
7187 if test -n "$WARNINGS"; then
7188     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
7189     enabled fatal_warnings && exit 1
7190 fi
7191
7192 test -e Makefile || echo "include $source_path/Makefile" > Makefile
7193
7194 esc(){
7195     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
7196 }
7197
7198 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
7199
7200 enabled stripping || strip="echo skipping strip"
7201 enabled stripping || striptype=""
7202
7203 config_files="$TMPH ffbuild/config.mak doc/config.texi"
7204
7205 cat > ffbuild/config.mak <<EOF
7206 # Automatically generated by configure - do not modify!
7207 ifndef FFMPEG_CONFIG_MAK
7208 FFMPEG_CONFIG_MAK=1
7209 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
7210 prefix=$prefix
7211 LIBDIR=\$(DESTDIR)$libdir
7212 SHLIBDIR=\$(DESTDIR)$shlibdir
7213 INCDIR=\$(DESTDIR)$incdir
7214 BINDIR=\$(DESTDIR)$bindir
7215 DATADIR=\$(DESTDIR)$datadir
7216 DOCDIR=\$(DESTDIR)$docdir
7217 MANDIR=\$(DESTDIR)$mandir
7218 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
7219 INSTALL_NAME_DIR=$install_name_dir
7220 SRC_PATH=$source_path
7221 SRC_LINK=$source_link
7222 ifndef MAIN_MAKEFILE
7223 SRC_PATH:=\$(SRC_PATH:.%=..%)
7224 endif
7225 CC_IDENT=$cc_ident
7226 ARCH=$arch
7227 INTRINSICS=$intrinsics
7228 EXTERN_PREFIX=$extern_prefix
7229 CC=$cc
7230 CXX=$cxx
7231 AS=$as
7232 OBJCC=$objcc
7233 LD=$ld
7234 DEPCC=$dep_cc
7235 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
7236 DEPAS=$as
7237 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
7238 X86ASM=$x86asmexe
7239 DEPX86ASM=$x86asmexe
7240 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
7241 AR=$ar
7242 ARFLAGS=$arflags
7243 AR_O=$ar_o
7244 AR_CMD=$ar
7245 NM_CMD=$nm
7246 RANLIB=$ranlib
7247 STRIP=$strip
7248 STRIPTYPE=$striptype
7249 NVCC=$nvcc
7250 CP=cp -p
7251 LN_S=$ln_s
7252 CPPFLAGS=$CPPFLAGS
7253 CFLAGS=$CFLAGS
7254 CXXFLAGS=$CXXFLAGS
7255 OBJCFLAGS=$OBJCFLAGS
7256 ASFLAGS=$ASFLAGS
7257 NVCCFLAGS=$nvccflags
7258 AS_C=$AS_C
7259 AS_O=$AS_O
7260 OBJCC_C=$OBJCC_C
7261 OBJCC_E=$OBJCC_E
7262 OBJCC_O=$OBJCC_O
7263 CC_C=$CC_C
7264 CC_E=$CC_E
7265 CC_O=$CC_O
7266 CXX_C=$CXX_C
7267 CXX_O=$CXX_O
7268 NVCC_C=$NVCC_C
7269 NVCC_O=$NVCC_O
7270 LD_O=$LD_O
7271 X86ASM_O=$X86ASM_O
7272 LD_LIB=$LD_LIB
7273 LD_PATH=$LD_PATH
7274 DLLTOOL=$dlltool
7275 WINDRES=$windres
7276 DEPWINDRES=$dep_cc
7277 DOXYGEN=$doxygen
7278 LDFLAGS=$LDFLAGS
7279 LDEXEFLAGS=$LDEXEFLAGS
7280 LDSOFLAGS=$LDSOFLAGS
7281 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
7282 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
7283 X86ASMFLAGS=$X86ASMFLAGS
7284 BUILDSUF=$build_suffix
7285 PROGSSUF=$progs_suffix
7286 FULLNAME=$FULLNAME
7287 LIBPREF=$LIBPREF
7288 LIBSUF=$LIBSUF
7289 LIBNAME=$LIBNAME
7290 SLIBPREF=$SLIBPREF
7291 SLIBSUF=$SLIBSUF
7292 EXESUF=$EXESUF
7293 EXTRA_VERSION=$extra_version
7294 CCDEP=$CCDEP
7295 CXXDEP=$CXXDEP
7296 CCDEP_FLAGS=$CCDEP_FLAGS
7297 ASDEP=$ASDEP
7298 ASDEP_FLAGS=$ASDEP_FLAGS
7299 X86ASMDEP=$X86ASMDEP
7300 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
7301 CC_DEPFLAGS=$CC_DEPFLAGS
7302 AS_DEPFLAGS=$AS_DEPFLAGS
7303 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
7304 HOSTCC=$host_cc
7305 HOSTLD=$host_ld
7306 HOSTCFLAGS=$host_cflags
7307 HOSTCPPFLAGS=$host_cppflags
7308 HOSTEXESUF=$HOSTEXESUF
7309 HOSTLDFLAGS=$host_ldflags
7310 HOSTEXTRALIBS=$host_extralibs
7311 DEPHOSTCC=$host_cc
7312 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
7313 HOSTCCDEP=$HOSTCCDEP
7314 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
7315 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
7316 HOSTCC_C=$HOSTCC_C
7317 HOSTCC_O=$HOSTCC_O
7318 HOSTLD_O=$HOSTLD_O
7319 TARGET_EXEC=$target_exec $target_exec_args
7320 TARGET_PATH=$target_path
7321 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
7322 CFLAGS-ffplay=${sdl2_cflags}
7323 CFLAGS_HEADERS=$CFLAGS_HEADERS
7324 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
7325 EXTRALIBS=$extralibs
7326 COMPAT_OBJS=$compat_objs
7327 INSTALL=$install
7328 LIBTARGET=${LIBTARGET}
7329 SLIBNAME=${SLIBNAME}
7330 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
7331 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
7332 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
7333 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
7334 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
7335 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
7336 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
7337 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
7338 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
7339 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
7340 NOREDZONE_FLAGS=$noredzone_flags
7341 LIBFUZZER_PATH=$libfuzzer_path
7342 IGNORE_TESTS=$ignore_tests
7343 EOF
7344
7345 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
7346
7347 for entry in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
7348     eval echo "EXTRALIBS-${entry}=\$${entry}_extralibs" >> ffbuild/config.mak
7349 done
7350
7351 cat > $TMPH <<EOF
7352 /* Automatically generated by configure - do not modify! */
7353 #ifndef FFMPEG_CONFIG_H
7354 #define FFMPEG_CONFIG_H
7355 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
7356 #define FFMPEG_LICENSE "$(c_escape $license)"
7357 #define CONFIG_THIS_YEAR 2019
7358 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
7359 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
7360 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
7361 #define av_restrict $restrict_keyword
7362 #define EXTERN_PREFIX "${extern_prefix}"
7363 #define EXTERN_ASM ${extern_prefix}
7364 #define BUILDSUF "$build_suffix"
7365 #define SLIBSUF "$SLIBSUF"
7366 #define HAVE_MMX2 HAVE_MMXEXT
7367 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
7368 EOF
7369
7370 test -n "$assert_level" &&
7371     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
7372
7373 test -n "$malloc_prefix" &&
7374     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
7375
7376 if enabled x86asm; then
7377     append config_files $TMPASM
7378     cat > $TMPASM <<EOF
7379 ; Automatically generated by configure - do not modify!
7380 EOF
7381 fi
7382
7383 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
7384
7385
7386 mkdir -p doc
7387 mkdir -p tests
7388 mkdir -p tests/api
7389 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
7390
7391 print_config ARCH_   "$config_files" $ARCH_LIST
7392 print_config HAVE_   "$config_files" $HAVE_LIST
7393 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
7394                                      $CONFIG_EXTRA      \
7395                                      $ALL_COMPONENTS    \
7396
7397 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
7398 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
7399
7400 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
7401 cp_if_changed $TMPH config.h
7402 touch ffbuild/.config
7403
7404 enabled x86asm && cp_if_changed $TMPASM config.asm
7405
7406 cat > $TMPH <<EOF
7407 /* Generated by ffmpeg configure */
7408 #ifndef AVUTIL_AVCONFIG_H
7409 #define AVUTIL_AVCONFIG_H
7410 EOF
7411
7412 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
7413
7414 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
7415
7416 cp_if_changed $TMPH libavutil/avconfig.h
7417
7418 # full_filter_name_foo=vf_foo
7419 # full_filter_name_bar=asrc_bar
7420 # ...
7421 eval "$(sed -n "s/^extern AVFilter ff_\([avfsinkrc]\{2,5\}\)_\(.*\);/full_filter_name_\2=\1_\2/p" $source_path/libavfilter/allfilters.c)"
7422
7423 # generate the lists of enabled components
7424 print_enabled_components(){
7425     file=$1
7426     struct_name=$2
7427     name=$3
7428     shift 3
7429     echo "static const $struct_name * const $name[] = {" > $TMPH
7430     for c in $*; do
7431         if enabled $c; then
7432             case $name in
7433                 filter_list)
7434                     eval c=\$full_filter_name_${c%_filter}
7435                 ;;
7436                 indev_list)
7437                     c=${c%_indev}_demuxer
7438                 ;;
7439                 outdev_list)
7440                     c=${c%_outdev}_muxer
7441                 ;;
7442             esac
7443             printf "    &ff_%s,\n" $c >> $TMPH
7444         fi
7445     done
7446     if [ "$name" = "filter_list" ]; then
7447         for c in asrc_abuffer vsrc_buffer asink_abuffer vsink_buffer; do
7448             printf "    &ff_%s,\n" $c >> $TMPH
7449         done
7450     fi
7451     echo "    NULL };" >> $TMPH
7452     cp_if_changed $TMPH $file
7453 }
7454
7455 print_enabled_components libavfilter/filter_list.c AVFilter filter_list $FILTER_LIST
7456 print_enabled_components libavcodec/codec_list.c AVCodec codec_list $CODEC_LIST
7457 print_enabled_components libavcodec/parser_list.c AVCodecParser parser_list $PARSER_LIST
7458 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
7459 print_enabled_components libavformat/demuxer_list.c AVInputFormat demuxer_list $DEMUXER_LIST
7460 print_enabled_components libavformat/muxer_list.c AVOutputFormat muxer_list $MUXER_LIST
7461 print_enabled_components libavdevice/indev_list.c AVInputFormat indev_list $INDEV_LIST
7462 print_enabled_components libavdevice/outdev_list.c AVOutputFormat outdev_list $OUTDEV_LIST
7463 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
7464
7465 # Settings for pkg-config files
7466
7467 cat > $TMPH <<EOF
7468 # Automatically generated by configure - do not modify!
7469 shared=$shared
7470 build_suffix=$build_suffix
7471 prefix=$prefix
7472 libdir=$libdir
7473 incdir=$incdir
7474 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
7475 source_path=${source_path}
7476 LIBPREF=${LIBPREF}
7477 LIBSUF=${LIBSUF}
7478 extralibs_avutil="$avutil_extralibs"
7479 extralibs_avcodec="$avcodec_extralibs"
7480 extralibs_avformat="$avformat_extralibs"
7481 extralibs_avdevice="$avdevice_extralibs"
7482 extralibs_avfilter="$avfilter_extralibs"
7483 extralibs_avresample="$avresample_extralibs"
7484 extralibs_postproc="$postproc_extralibs"
7485 extralibs_swscale="$swscale_extralibs"
7486 extralibs_swresample="$swresample_extralibs"
7487 EOF
7488
7489 for lib in $LIBRARY_LIST; do
7490     lib_deps="$(eval echo \$${lib}_deps)"
7491     echo ${lib}_deps=\"$lib_deps\" >> $TMPH
7492 done
7493
7494 cp_if_changed $TMPH ffbuild/config.sh