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-libndi_newtek   enable Newteck NDI I/O support [no]
 302   --enable-mbedtls         enable mbedTLS, needed for https support
 303                            if openssl, gnutls or libtls is not used [no]
 304   --enable-mediacodec      enable Android MediaCodec support [no]
 305   --enable-libmysofa       enable libmysofa, needed for sofalizer filter [no]
 306   --enable-openal          enable OpenAL 1.1 capture support [no]
 307   --enable-opencl          enable OpenCL processing [no]
 308   --enable-opengl          enable OpenGL rendering [no]
 309   --enable-openssl         enable openssl, needed for https support
 310                            if gnutls, libtls or mbedtls is not used [no]
 311   --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   --enable-cuda-sdk        enable CUDA features that require the CUDA SDK [no]
 326   --disable-cuvid          disable Nvidia CUVID support [autodetect]
 327   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
 328   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
 329   --disable-ffnvcodec      disable dynamically linked Nvidia code [autodetect]
 330   --enable-libdrm          enable DRM code (Linux) [no]
 331   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
 332   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
 333   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
 334   --disable-nvdec          disable Nvidia video decoding acceleration (via hwaccel) [autodetect]
 335   --disable-nvenc          disable Nvidia video encoding code [autodetect]
 336   --enable-omx             enable OpenMAX IL code [no]
 337   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
 338   --enable-rkmpp           enable Rockchip Media Process Platform code [no]
 339   --disable-v4l2-m2m       disable V4L2 mem2mem code [autodetect]
 340   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
 341   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
 342   --disable-videotoolbox   disable VideoToolbox code [autodetect]
 343
 344 Toolchain options:
 345   --arch=ARCH              select architecture [$arch]
 346   --cpu=CPU                select the minimum required CPU (affects
 347                            instruction selection, may crash on older CPUs)
 348   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 349   --progs-suffix=SUFFIX    program name suffix []
 350   --enable-cross-compile   assume a cross-compiler is used
 351   --sysroot=PATH           root of cross-build tree
 352   --sysinclude=PATH        location of cross-build system headers
 353   --target-os=OS           compiler targets OS [$target_os]
 354   --target-exec=CMD        command to run executables on target
 355   --target-path=DIR        path to view of build directory on target
 356   --target-samples=DIR     path to samples directory on target
 357   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 358   --toolchain=NAME         set tool defaults according to NAME
 359                            (gcc-asan, clang-asan, gcc-msan, clang-msan,
 360                            gcc-tsan, clang-tsan, gcc-usan, clang-usan,
 361                            valgrind-massif, valgrind-memcheck,
 362                            msvc, icl, gcov, llvm-cov, hardened)
 363   --nm=NM                  use nm tool NM [$nm_default]
 364   --ar=AR                  use archive tool AR [$ar_default]
 365   --as=AS                  use assembler AS [$as_default]
 366   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
 367   --strip=STRIP            use strip tool STRIP [$strip_default]
 368   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 369   --x86asmexe=EXE          use nasm-compatible assembler EXE [$x86asmexe_default]
 370   --cc=CC                  use C compiler CC [$cc_default]
 371   --cxx=CXX                use C compiler CXX [$cxx_default]
 372   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 373   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 374   --nvcc=NVCC              use Nvidia CUDA compiler NVCC [$nvcc_default]
 375   --ld=LD                  use linker LD [$ld_default]
 376   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 377   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 378   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 379   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 380   --host-cc=HOSTCC         use host C compiler HOSTCC
 381   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 382   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 383   --host-ld=HOSTLD         use host linker HOSTLD
 384   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 385   --host-extralibs=HLIBS   use libs HLIBS when linking for host
 386   --host-os=OS             compiler host OS [$target_os]
 387   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 388   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 389   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 390   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 391   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 392   --extra-ldsoflags=ELDFLAGS add ELDFLAGS to LDSOFLAGS [$LDSOFLAGS]
 393   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 394   --extra-version=STRING   version string suffix []
 395   --optflags=OPTFLAGS      override optimization-related compiler flags
 396   --nvccflags=NVCCFLAGS    override nvcc flags [$nvccflags_default]
 397   --build-suffix=SUFFIX    library name suffix []
 398   --enable-pic             build position-independent code
 399   --enable-thumb           compile for Thumb instruction set
 400   --enable-lto             use link-time optimization
 401   --env="ENV=override"     override the environment variables
 402
 403 Advanced options (experts only):
 404   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 405   --custom-allocator=NAME  use a supported custom allocator
 406   --disable-symver         disable symbol versioning
 407   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 408   --disable-safe-bitstream-reader
 409                            disable buffer boundary checking in bitreaders
 410                            (faster, but may crash)
 411   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 412
 413 Optimization options (experts only):
 414   --disable-asm            disable all assembly optimizations
 415   --disable-altivec        disable AltiVec optimizations
 416   --disable-vsx            disable VSX optimizations
 417   --disable-power8         disable POWER8 optimizations
 418   --disable-amd3dnow       disable 3DNow! optimizations
 419   --disable-amd3dnowext    disable 3DNow! extended optimizations
 420   --disable-mmx            disable MMX optimizations
 421   --disable-mmxext         disable MMXEXT optimizations
 422   --disable-sse            disable SSE optimizations
 423   --disable-sse2           disable SSE2 optimizations
 424   --disable-sse3           disable SSE3 optimizations
 425   --disable-ssse3          disable SSSE3 optimizations
 426   --disable-sse4           disable SSE4 optimizations
 427   --disable-sse42          disable SSE4.2 optimizations
 428   --disable-avx            disable AVX optimizations
 429   --disable-xop            disable XOP optimizations
 430   --disable-fma3           disable FMA3 optimizations
 431   --disable-fma4           disable FMA4 optimizations
 432   --disable-avx2           disable AVX2 optimizations
 433   --disable-avx512         disable AVX-512 optimizations
 434   --disable-aesni          disable AESNI optimizations
 435   --disable-armv5te        disable armv5te optimizations
 436   --disable-armv6          disable armv6 optimizations
 437   --disable-armv6t2        disable armv6t2 optimizations
 438   --disable-vfp            disable VFP optimizations
 439   --disable-neon           disable NEON optimizations
 440   --disable-inline-asm     disable use of inline assembly
 441   --disable-x86asm         disable use of standalone x86 assembly
 442   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
 443   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 444   --disable-msa            disable MSA optimizations
 445   --disable-mipsfpu        disable floating point MIPS optimizations
 446   --disable-mmi            disable Loongson SIMD optimizations
 447   --disable-fast-unaligned consider unaligned accesses slow
 448
 449 Developer options (useful when working on FFmpeg itself):
 450   --disable-debug          disable debugging symbols
 451   --enable-debug=LEVEL     set the debug level [$debuglevel]
 452   --disable-optimizations  disable compiler optimizations
 453   --enable-extra-warnings  enable more compiler warnings
 454   --disable-stripping      disable stripping of executables and shared libraries
 455   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 456                            2 causes a slowdown at runtime.
 457   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 458   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 459                            leaks and errors, using the specified valgrind binary.
 460                            Cannot be combined with --target-exec
 461   --enable-ftrapv          Trap arithmetic overflows
 462   --samples=PATH           location of test samples for FATE, if not set use
 463                            \$FATE_SAMPLES at make invocation time.
 464   --enable-neon-clobber-test check NEON registers for clobbering (should be
 465                            used only for debugging purposes)
 466   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 467                            should be used only for debugging purposes)
 468   --enable-random          randomly enable/disable components
 469   --disable-random
 470   --enable-random=LIST     randomly enable/disable specific components or
 471   --disable-random=LIST    component groups. LIST is a comma-separated list
 472                            of NAME[:PROB] entries where NAME is a component
 473                            (group) and PROB the probability associated with
 474                            NAME (default 0.5).
 475   --random-seed=VALUE      seed value for --enable/disable-random
 476   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 477                            (only applies to --disable-optimizations builds)
 478   --enable-ossfuzz         Enable building fuzzer tool
 479   --libfuzzer=PATH         path to libfuzzer
 480   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
 481                            in the name) of tests whose result is ignored
 482   --enable-linux-perf      enable Linux Performance Monitor API
 483
 484 NOTE: Object files are built at the place where configure is launched.
 485 EOF
 486   exit 0
 487 }
 488
 489 if test -t 1 && which tput >/dev/null 2>&1; then
 490     ncolors=$(tput colors)
 491     if test -n "$ncolors" && test $ncolors -ge 8; then
 492         bold_color=$(tput bold)
 493         warn_color=$(tput setaf 3)
 494         error_color=$(tput setaf 1)
 495         reset_color=$(tput sgr0)
 496     fi
 497     # 72 used instead of 80 since that's the default of pr
 498     ncols=$(tput cols)
 499 fi
 500 : ${ncols:=72}
 501
 502 log(){
 503     echo "$@" >> $logfile
 504 }
 505
 506 log_file(){
 507     log BEGIN $1
 508     pr -n -t $1 >> $logfile
 509     log END $1
 510 }
 511
 512 warn(){
 513     log "WARNING: $*"
 514     WARNINGS="${WARNINGS}WARNING: $*\n"
 515 }
 516
 517 die(){
 518     log "$@"
 519     echo "$error_color$bold_color$@$reset_color"
 520     cat <<EOF
 521
 522 If you think configure made a mistake, make sure you are using the latest
 523 version from Git.  If the latest version fails, report the problem to the
 524 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 525 EOF
 526     if disabled logging; then
 527         cat <<EOF
 528 Rerun configure with logging enabled (do not use --disable-logging), and
 529 include the log this produces with your report.
 530 EOF
 531     else
 532         cat <<EOF
 533 Include the log file "$logfile" produced by configure as this will help
 534 solve the problem.
 535 EOF
 536     fi
 537     exit 1
 538 }
 539
 540 # Avoid locale weirdness, besides we really just want to translate ASCII.
 541 toupper(){
 542     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 543 }
 544
 545 tolower(){
 546     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 547 }
 548
 549 c_escape(){
 550     echo "$*" | sed 's/["\\]/\\\0/g'
 551 }
 552
 553 sh_quote(){
 554     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 555     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 556     echo "$v"
 557 }
 558
 559 cleanws(){
 560     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 561 }
 562
 563 filter(){
 564     pat=$1
 565     shift
 566     for v; do
 567         eval "case '$v' in $pat) printf '%s ' '$v' ;; esac"
 568     done
 569 }
 570
 571 filter_out(){
 572     pat=$1
 573     shift
 574     for v; do
 575         eval "case '$v' in $pat) ;; *) printf '%s ' '$v' ;; esac"
 576     done
 577 }
 578
 579 map(){
 580     m=$1
 581     shift
 582     for v; do eval $m; done
 583 }
 584
 585 add_suffix(){
 586     suffix=$1
 587     shift
 588     for v; do echo ${v}${suffix}; done
 589 }
 590
 591 remove_suffix(){
 592     suffix=$1
 593     shift
 594     for v; do echo ${v%$suffix}; done
 595 }
 596
 597 set_all(){
 598     value=$1
 599     shift
 600     for var in $*; do
 601         eval $var=$value
 602     done
 603 }
 604
 605 set_weak(){
 606     value=$1
 607     shift
 608     for var; do
 609         eval : \${$var:=$value}
 610     done
 611 }
 612
 613 sanitize_var_name(){
 614     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 615 }
 616
 617 set_sanitized(){
 618     var=$1
 619     shift
 620     eval $(sanitize_var_name "$var")='$*'
 621 }
 622
 623 get_sanitized(){
 624     eval echo \$$(sanitize_var_name "$1")
 625 }
 626
 627 pushvar(){
 628     for pvar in $*; do
 629         eval level=\${${pvar}_level:=0}
 630         eval ${pvar}_${level}="\$$pvar"
 631         eval ${pvar}_level=$(($level+1))
 632     done
 633 }
 634
 635 popvar(){
 636     for pvar in $*; do
 637         eval level=\${${pvar}_level:-0}
 638         test $level = 0 && continue
 639         eval level=$(($level-1))
 640         eval $pvar="\${${pvar}_${level}}"
 641         eval ${pvar}_level=$level
 642         eval unset ${pvar}_${level}
 643     done
 644 }
 645
 646 request(){
 647     for var in $*; do
 648         eval ${var}_requested=yes
 649         eval $var=
 650     done
 651 }
 652
 653 warn_if_gets_disabled(){
 654     for var in $*; do
 655         WARN_IF_GETS_DISABLED_LIST="$WARN_IF_GETS_DISABLED_LIST $var"
 656     done
 657 }
 658
 659 enable(){
 660     set_all yes $*
 661 }
 662
 663 disable(){
 664     set_all no $*
 665 }
 666
 667 disable_with_reason(){
 668     disable $1
 669     eval "${1}_disable_reason=\"$2\""
 670     if requested $1; then
 671         die "ERROR: $1 requested, but $2"
 672     fi
 673 }
 674
 675 enable_weak(){
 676     set_weak yes $*
 677 }
 678
 679 disable_weak(){
 680     set_weak no $*
 681 }
 682
 683 enable_sanitized(){
 684     for var; do
 685         enable $(sanitize_var_name $var)
 686     done
 687 }
 688
 689 disable_sanitized(){
 690     for var; do
 691         disable $(sanitize_var_name $var)
 692     done
 693 }
 694
 695 do_enable_deep(){
 696     for var; do
 697         enabled $var && continue
 698         set -- $var
 699         eval enable_deep \$${var}_select
 700         var=$1
 701         eval enable_deep_weak \$${var}_suggest
 702     done
 703 }
 704
 705 enable_deep(){
 706     do_enable_deep $*
 707     enable $*
 708 }
 709
 710 enable_deep_weak(){
 711     for var; do
 712         disabled $var && continue
 713         set -- $var
 714         do_enable_deep $var
 715         var=$1
 716         enable_weak $var
 717     done
 718 }
 719
 720 requested(){
 721     test "${1#!}" = "$1" && op="=" || op="!="
 722     eval test "x\$${1#!}_requested" $op "xyes"
 723 }
 724
 725 enabled(){
 726     test "${1#!}" = "$1" && op="=" || op="!="
 727     eval test "x\$${1#!}" $op "xyes"
 728 }
 729
 730 disabled(){
 731     test "${1#!}" = "$1" && op="=" || op="!="
 732     eval test "x\$${1#!}" $op "xno"
 733 }
 734
 735 enabled_all(){
 736     for opt; do
 737         enabled $opt || return 1
 738     done
 739 }
 740
 741 disabled_all(){
 742     for opt; do
 743         disabled $opt || return 1
 744     done
 745 }
 746
 747 enabled_any(){
 748     for opt; do
 749         enabled $opt && return 0
 750     done
 751 }
 752
 753 disabled_any(){
 754     for opt; do
 755         disabled $opt && return 0
 756     done
 757     return 1
 758 }
 759
 760 set_default(){
 761     for opt; do
 762         eval : \${$opt:=\$${opt}_default}
 763     done
 764 }
 765
 766 is_in(){
 767     value=$1
 768     shift
 769     for var in $*; do
 770         [ $var = $value ] && return 0
 771     done
 772     return 1
 773 }
 774
 775 # The cfg loop is very hot (several thousands iterations), and in bash also
 776 # potentialy quite slow. Try to abort the iterations early, preferably without
 777 # calling functions. 70%+ of the time cfg is already done or without deps.
 778 check_deps(){
 779     for cfg; do
 780         eval [ x\$${cfg}_checking = xdone ] && continue
 781         eval [ x\$${cfg}_checking = xinprogress ] && die "Circular dependency for $cfg."
 782
 783         eval "
 784         dep_all=\$${cfg}_deps
 785         dep_any=\$${cfg}_deps_any
 786         dep_con=\$${cfg}_conflict
 787         dep_sel=\$${cfg}_select
 788         dep_sgs=\$${cfg}_suggest
 789         dep_ifa=\$${cfg}_if
 790         dep_ifn=\$${cfg}_if_any
 791         "
 792
 793         # most of the time here $cfg has no deps - avoid costly no-op work
 794         if [ "$dep_all$dep_any$dep_con$dep_sel$dep_sgs$dep_ifa$dep_ifn" ]; then
 795             eval ${cfg}_checking=inprogress
 796
 797             set -- $cfg "$dep_all" "$dep_any" "$dep_con" "$dep_sel" "$dep_sgs" "$dep_ifa" "$dep_ifn"
 798             check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
 799             cfg=$1; dep_all=$2; dep_any=$3; dep_con=$4; dep_sel=$5 dep_sgs=$6; dep_ifa=$7; dep_ifn=$8
 800
 801             [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 802             [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 803             enabled_all  $dep_all || { disable_with_reason $cfg "not all dependencies are satisfied: $dep_all"; }
 804             enabled_any  $dep_any || { disable_with_reason $cfg "not any dependency is satisfied: $dep_any"; }
 805             disabled_all $dep_con || { disable_with_reason $cfg "some conflicting dependencies are unsatisfied: $dep_con"; }
 806             disabled_any $dep_sel && { disable_with_reason $cfg "some selected dependency is unsatisfied: $dep_sel"; }
 807
 808             enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
 809
 810             for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
 811                 # filter out library deps, these do not belong in extralibs
 812                 is_in $dep $LIBRARY_LIST && continue
 813                 enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
 814             done
 815         fi
 816
 817         eval ${cfg}_checking=done
 818     done
 819 }
 820
 821 print_config(){
 822     pfx=$1
 823     files=$2
 824     shift 2
 825     map 'eval echo "$v \${$v:-no}"' "$@" |
 826     awk "BEGIN { split(\"$files\", files) }
 827         {
 828             c = \"$pfx\" toupper(\$1);
 829             v = \$2;
 830             sub(/yes/, 1, v);
 831             sub(/no/,  0, v);
 832             for (f in files) {
 833                 file = files[f];
 834                 if (file ~ /\\.h\$/) {
 835                     printf(\"#define %s %d\\n\", c, v) >>file;
 836                 } else if (file ~ /\\.asm\$/) {
 837                     printf(\"%%define %s %d\\n\", c, v) >>file;
 838                 } else if (file ~ /\\.mak\$/) {
 839                     n = -v ? \"\" : \"!\";
 840                     printf(\"%s%s=yes\\n\", n, c) >>file;
 841                 } else if (file ~ /\\.texi\$/) {
 842                     pre = -v ? \"\" : \"@c \";
 843                     yesno = \$2;
 844                     c2 = tolower(c);
 845                     gsub(/_/, \"-\", c2);
 846                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 847                 }
 848             }
 849         }"
 850 }
 851
 852 print_enabled(){
 853     suf=$1
 854     shift
 855     for v; do
 856         enabled $v && printf "%s\n" ${v%$suf}
 857     done
 858 }
 859
 860 append(){
 861     var=$1
 862     shift
 863     eval "$var=\"\$$var $*\""
 864 }
 865
 866 prepend(){
 867     var=$1
 868     shift
 869     eval "$var=\"$* \$$var\""
 870 }
 871
 872 reverse () {
 873     eval '
 874         reverse_out=
 875         for v in $'$1'; do
 876             reverse_out="$v $reverse_out"
 877         done
 878         '$1'=$reverse_out
 879     '
 880 }
 881
 882 # keeps the last occurence of each non-unique item
 883 unique(){
 884     unique_out=
 885     eval unique_in=\$$1
 886     reverse unique_in
 887     for v in $unique_in; do
 888         # " $unique_out" +space such that every item is surrounded with spaces
 889         case " $unique_out" in *" $v "*) continue; esac  # already in list
 890         unique_out="$unique_out$v "
 891     done
 892     reverse unique_out
 893     eval $1=\$unique_out
 894 }
 895
 896 resolve(){
 897     resolve_out=
 898     eval resolve_in=\$$1
 899     for v in $resolve_in; do
 900         eval 'resolve_out="$resolve_out$'$v' "'
 901     done
 902     eval $1=\$resolve_out
 903 }
 904
 905 add_cppflags(){
 906     append CPPFLAGS "$@"
 907 }
 908
 909 add_cflags(){
 910     append CFLAGS $($cflags_filter "$@")
 911 }
 912
 913 add_cflags_headers(){
 914     append CFLAGS_HEADERS $($cflags_filter "$@")
 915 }
 916
 917 add_cxxflags(){
 918     append CXXFLAGS $($cflags_filter "$@")
 919 }
 920
 921 add_objcflags(){
 922     append OBJCFLAGS $($objcflags_filter "$@")
 923 }
 924
 925 add_asflags(){
 926     append ASFLAGS $($asflags_filter "$@")
 927 }
 928
 929 add_ldflags(){
 930     append LDFLAGS $($ldflags_filter "$@")
 931 }
 932
 933 add_ldexeflags(){
 934     append LDEXEFLAGS $($ldflags_filter "$@")
 935 }
 936
 937 add_ldsoflags(){
 938     append LDSOFLAGS $($ldflags_filter "$@")
 939 }
 940
 941 add_extralibs(){
 942     prepend extralibs $($ldflags_filter "$@")
 943 }
 944
 945 add_stripflags(){
 946     append ASMSTRIPFLAGS "$@"
 947 }
 948
 949 add_host_cppflags(){
 950     append host_cppflags "$@"
 951 }
 952
 953 add_host_cflags(){
 954     append host_cflags $($host_cflags_filter "$@")
 955 }
 956
 957 add_host_ldflags(){
 958     append host_ldflags $($host_ldflags_filter "$@")
 959 }
 960
 961 add_compat(){
 962     append compat_objs $1
 963     shift
 964     map 'add_cppflags -D$v' "$@"
 965 }
 966
 967 test_cmd(){
 968     log "$@"
 969     "$@" >> $logfile 2>&1
 970 }
 971
 972 test_stat(){
 973     log test_stat "$@"
 974     stat "$1" >> $logfile 2>&1
 975 }
 976
 977 cc_e(){
 978     eval printf '%s\\n' $CC_E
 979 }
 980
 981 cc_o(){
 982     eval printf '%s\\n' $CC_O
 983 }
 984
 985 as_o(){
 986     eval printf '%s\\n' $AS_O
 987 }
 988
 989 x86asm_o(){
 990     eval printf '%s\\n' $X86ASM_O
 991 }
 992
 993 ld_o(){
 994     eval printf '%s\\n' $LD_O
 995 }
 996
 997 hostcc_e(){
 998     eval printf '%s\\n' $HOSTCC_E
 999 }
1000
1001 hostcc_o(){
1002     eval printf '%s\\n' $HOSTCC_O
1003 }
1004
1005 nvcc_o(){
1006     eval printf '%s\\n' $NVCC_O
1007 }
1008
1009 test_cc(){
1010     log test_cc "$@"
1011     cat > $TMPC
1012     log_file $TMPC
1013     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
1014 }
1015
1016 test_cxx(){
1017     log test_cxx "$@"
1018     cat > $TMPCPP
1019     log_file $TMPCPP
1020     test_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
1021 }
1022
1023 test_objcc(){
1024     log test_objcc "$@"
1025     cat > $TMPM
1026     log_file $TMPM
1027     test_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
1028 }
1029
1030 test_nvcc(){
1031     log test_nvcc "$@"
1032     cat > $TMPCU
1033     log_file $TMPCU
1034     test_cmd $nvcc -ptx $NVCCFLAGS "$@" $NVCC_C $(nvcc_o $TMPO) $TMPCU
1035 }
1036
1037 check_nvcc() {
1038     log check_nvcc "$@"
1039     test_nvcc <<EOF
1040 extern "C" {
1041     __global__ void hello(unsigned char *data) {}
1042 }
1043 EOF
1044 }
1045
1046 test_cpp(){
1047     log test_cpp "$@"
1048     cat > $TMPC
1049     log_file $TMPC
1050     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
1051 }
1052
1053 test_as(){
1054     log test_as "$@"
1055     cat > $TMPS
1056     log_file $TMPS
1057     test_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
1058 }
1059
1060 test_x86asm(){
1061     log test_x86asm "$@"
1062     echo "$1" > $TMPASM
1063     log_file $TMPASM
1064     shift
1065     test_cmd $x86asmexe $X86ASMFLAGS -Werror "$@" $(x86asm_o $TMPO) $TMPASM
1066 }
1067
1068 check_cmd(){
1069     log check_cmd "$@"
1070     cmd=$1
1071     disabled $cmd && return
1072     disable $cmd
1073     test_cmd $@ && enable $cmd
1074 }
1075
1076 check_as(){
1077     log check_as "$@"
1078     name=$1
1079     code=$2
1080     shift 2
1081     disable $name
1082     test_as $@ <<EOF && enable $name
1083 $code
1084 EOF
1085 }
1086
1087 check_inline_asm(){
1088     log check_inline_asm "$@"
1089     name="$1"
1090     code="$2"
1091     shift 2
1092     disable $name
1093     test_cc "$@" <<EOF && enable $name
1094 void foo(void){ __asm__ volatile($code); }
1095 EOF
1096 }
1097
1098 check_inline_asm_flags(){
1099     log check_inline_asm_flags "$@"
1100     name="$1"
1101     code="$2"
1102     flags=''
1103     shift 2
1104     while [ "$1" != "" ]; do
1105       append flags $1
1106       shift
1107     done;
1108     disable $name
1109     cat > $TMPC <<EOF
1110 void foo(void){ __asm__ volatile($code); }
1111 EOF
1112     log_file $TMPC
1113     test_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
1114     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
1115 }
1116
1117 check_insn(){
1118     log check_insn "$@"
1119     check_inline_asm ${1}_inline "\"$2\""
1120     check_as ${1}_external "$2"
1121 }
1122
1123 check_x86asm(){
1124     log check_x86asm "$@"
1125     name=$1
1126     shift
1127     disable $name
1128     test_x86asm "$@" && enable $name
1129 }
1130
1131 test_ld(){
1132     log test_ld "$@"
1133     type=$1
1134     shift 1
1135     flags=$(filter_out '-l*|*.so' $@)
1136     libs=$(filter '-l*|*.so' $@)
1137     test_$type $($cflags_filter $flags) || return
1138     flags=$($ldflags_filter $flags)
1139     libs=$($ldflags_filter $libs)
1140     test_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1141 }
1142
1143 check_ld(){
1144     log check_ld "$@"
1145     type=$1
1146     name=$2
1147     shift 2
1148     disable $name
1149     test_ld $type $@ && enable $name
1150 }
1151
1152 print_include(){
1153     hdr=$1
1154     test "${hdr%.h}" = "${hdr}" &&
1155         echo "#include $hdr"    ||
1156         echo "#include <$hdr>"
1157 }
1158
1159 test_code(){
1160     log test_code "$@"
1161     check=$1
1162     headers=$2
1163     code=$3
1164     shift 3
1165     {
1166         for hdr in $headers; do
1167             print_include $hdr
1168         done
1169         echo "int main(void) { $code; return 0; }"
1170     } | test_$check "$@"
1171 }
1172
1173 check_cppflags(){
1174     log check_cppflags "$@"
1175     test_cpp "$@" <<EOF && append CPPFLAGS "$@"
1176 #include <stdlib.h>
1177 EOF
1178 }
1179
1180 test_cflags(){
1181     log test_cflags "$@"
1182     set -- $($cflags_filter "$@")
1183     test_cc "$@" <<EOF
1184 int x;
1185 EOF
1186 }
1187
1188 check_cflags(){
1189     log check_cflags "$@"
1190     test_cflags "$@" && add_cflags "$@"
1191 }
1192
1193 check_cxxflags(){
1194     log check_cxxflags "$@"
1195     set -- $($cflags_filter "$@")
1196     test_cxx "$@" <<EOF && append CXXFLAGS "$@"
1197 int x;
1198 EOF
1199 }
1200
1201 test_objcflags(){
1202     log test_objcflags "$@"
1203     set -- $($objcflags_filter "$@")
1204     test_objcc "$@" <<EOF
1205 int x;
1206 EOF
1207 }
1208
1209 check_objcflags(){
1210     log check_objcflags "$@"
1211     test_objcflags "$@" && add_objcflags "$@"
1212 }
1213
1214 test_ldflags(){
1215     log test_ldflags "$@"
1216     set -- $($ldflags_filter "$@")
1217     test_ld "cc" "$@" <<EOF
1218 int main(void){ return 0; }
1219 EOF
1220 }
1221
1222 check_ldflags(){
1223     log check_ldflags "$@"
1224     test_ldflags "$@" && add_ldflags "$@"
1225 }
1226
1227 test_stripflags(){
1228     log test_stripflags "$@"
1229     # call test_cc to get a fresh TMPO
1230     test_cc <<EOF
1231 int main(void) { return 0; }
1232 EOF
1233     test_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1234 }
1235
1236 check_stripflags(){
1237     log check_stripflags "$@"
1238     test_stripflags "$@" && add_stripflags "$@"
1239 }
1240
1241 check_headers(){
1242     log check_headers "$@"
1243     headers=$1
1244     shift
1245     disable_sanitized $headers
1246     {
1247         for hdr in $headers; do
1248             print_include $hdr
1249         done
1250         echo "int x;"
1251     } | test_cpp "$@" && enable_sanitized $headers
1252 }
1253
1254 check_header_objcc(){
1255     log check_header_objcc "$@"
1256     rm -f -- "$TMPO"
1257     header=$1
1258     shift
1259     disable_sanitized $header
1260     {
1261        echo "#include <$header>"
1262        echo "int main(void) { return 0; }"
1263     } | test_objcc && test_stat "$TMPO" && enable_sanitized $header
1264 }
1265
1266 check_apple_framework(){
1267     log check_apple_framework "$@"
1268     framework="$1"
1269     name="$(tolower $framework)"
1270     header="${framework}/${framework}.h"
1271     disable $name
1272     check_header_objcc $header &&
1273         enable $name && eval ${name}_extralibs='"-framework $framework"'
1274 }
1275
1276 check_func(){
1277     log check_func "$@"
1278     func=$1
1279     shift
1280     disable $func
1281     test_ld "cc" "$@" <<EOF && enable $func
1282 extern int $func();
1283 int main(void){ $func(); }
1284 EOF
1285 }
1286
1287 check_complexfunc(){
1288     log check_complexfunc "$@"
1289     func=$1
1290     narg=$2
1291     shift 2
1292     test $narg = 2 && args="f, g" || args="f * I"
1293     disable $func
1294     test_ld "cc" "$@" <<EOF && enable $func
1295 #include <complex.h>
1296 #include <math.h>
1297 float foo(complex float f, complex float g) { return $func($args); }
1298 int main(void){ return (int) foo; }
1299 EOF
1300 }
1301
1302 check_mathfunc(){
1303     log check_mathfunc "$@"
1304     func=$1
1305     narg=$2
1306     shift 2
1307     test $narg = 2 && args="f, g" || args="f"
1308     disable $func
1309     test_ld "cc" "$@" <<EOF && enable $func
1310 #include <math.h>
1311 float foo(float f, float g) { return $func($args); }
1312 int main(void){ return (int) foo; }
1313 EOF
1314 }
1315
1316 check_func_headers(){
1317     log check_func_headers "$@"
1318     headers=$1
1319     funcs=$2
1320     shift 2
1321     {
1322         for hdr in $headers; do
1323             print_include $hdr
1324         done
1325         echo "#include <stdint.h>"
1326         for func in $funcs; do
1327             echo "long check_$func(void) { return (long) $func; }"
1328         done
1329         echo "int main(void) { int ret = 0;"
1330         # LTO could optimize out the test functions without this
1331         for func in $funcs; do
1332             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1333         done
1334         echo "return ret; }"
1335     } | test_ld "cc" "$@" && enable $funcs && enable_sanitized $headers
1336 }
1337
1338 check_class_headers_cpp(){
1339     log check_class_headers_cpp "$@"
1340     headers=$1
1341     classes=$2
1342     shift 2
1343     {
1344         for hdr in $headers; do
1345             echo "#include <$hdr>"
1346         done
1347         echo "int main(void) { "
1348         i=1
1349         for class in $classes; do
1350             echo "$class obj$i;"
1351             i=$(expr $i + 1)
1352         done
1353         echo "return 0; }"
1354     } | test_ld "cxx" "$@" && enable $funcs && enable_sanitized $headers
1355 }
1356
1357 test_cpp_condition(){
1358     log test_cpp_condition "$@"
1359     header=$1
1360     condition=$2
1361     shift 2
1362     test_cpp "$@" <<EOF
1363 #include <$header>
1364 #if !($condition)
1365 #error "unsatisfied condition: $condition"
1366 #endif
1367 EOF
1368 }
1369
1370 check_cpp_condition(){
1371     log check_cpp_condition "$@"
1372     name=$1
1373     shift 1
1374     disable $name
1375     test_cpp_condition "$@" && enable $name
1376 }
1377
1378 test_cflags_cc(){
1379     log test_cflags_cc "$@"
1380     flags=$1
1381     header=$2
1382     condition=$3
1383     shift 3
1384     set -- $($cflags_filter "$flags")
1385     test_cc "$@" <<EOF
1386 #include <$header>
1387 #if !($condition)
1388 #error "unsatisfied condition: $condition"
1389 #endif
1390 EOF
1391 }
1392
1393 check_lib(){
1394     log check_lib "$@"
1395     name="$1"
1396     headers="$2"
1397     funcs="$3"
1398     shift 3
1399     disable $name
1400     check_func_headers "$headers" "$funcs" "$@" &&
1401         enable $name && eval ${name}_extralibs="\$@"
1402 }
1403
1404 check_lib_cpp(){
1405     log check_lib_cpp "$@"
1406     name="$1"
1407     headers="$2"
1408     classes="$3"
1409     shift 3
1410     disable $name
1411     check_class_headers_cpp "$headers" "$classes" "$@" &&
1412         enable $name && eval ${name}_extralibs="\$@"
1413 }
1414
1415 test_pkg_config(){
1416     log test_pkg_config "$@"
1417     name="$1"
1418     pkg_version="$2"
1419     pkg="${2%% *}"
1420     headers="$3"
1421     funcs="$4"
1422     shift 4
1423     disable $name
1424     test_cmd $pkg_config --exists --print-errors $pkg_version || return
1425     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1426     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1427     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1428         enable $name &&
1429         set_sanitized "${name}_cflags"    $pkg_cflags &&
1430         set_sanitized "${name}_extralibs" $pkg_libs
1431 }
1432
1433 check_pkg_config(){
1434     log check_pkg_config "$@"
1435     name="$1"
1436     test_pkg_config "$@" &&
1437         eval add_cflags \$${name}_cflags
1438 }
1439
1440 test_exec(){
1441     test_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1442 }
1443
1444 check_exec_crash(){
1445     log check_exec_crash "$@"
1446     code=$(cat)
1447
1448     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1449     # are safe but may not be available everywhere.  Thus we use
1450     # raise(SIGTERM) instead.  The check is run in a subshell so we
1451     # can redirect the "Terminated" message from the shell.  SIGBUS
1452     # is not defined by standard C so it is used conditionally.
1453
1454     (test_exec "$@") >> $logfile 2>&1 <<EOF
1455 #include <signal.h>
1456 static void sighandler(int sig){
1457     raise(SIGTERM);
1458 }
1459 int foo(void){
1460     $code
1461 }
1462 int (*func_ptr)(void) = foo;
1463 int main(void){
1464     signal(SIGILL, sighandler);
1465     signal(SIGFPE, sighandler);
1466     signal(SIGSEGV, sighandler);
1467 #ifdef SIGBUS
1468     signal(SIGBUS, sighandler);
1469 #endif
1470     return func_ptr();
1471 }
1472 EOF
1473 }
1474
1475 check_type(){
1476     log check_type "$@"
1477     headers=$1
1478     type=$2
1479     shift 2
1480     disable_sanitized "$type"
1481     test_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1482 }
1483
1484 check_struct(){
1485     log check_struct "$@"
1486     headers=$1
1487     struct=$2
1488     member=$3
1489     shift 3
1490     disable_sanitized "${struct}_${member}"
1491     test_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1492         enable_sanitized "${struct}_${member}"
1493 }
1494
1495 check_builtin(){
1496     log check_builtin "$@"
1497     name=$1
1498     headers=$2
1499     builtin=$3
1500     shift 3
1501     disable "$name"
1502     test_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1503 }
1504
1505 check_compile_assert(){
1506     log check_compile_assert "$@"
1507     name=$1
1508     headers=$2
1509     condition=$3
1510     shift 3
1511     disable "$name"
1512     test_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1513 }
1514
1515 check_cc(){
1516     log check_cc "$@"
1517     name=$1
1518     shift
1519     disable "$name"
1520     test_code cc "$@" && enable "$name"
1521 }
1522
1523 require(){
1524     log require "$@"
1525     name_version="$1"
1526     name="${1%% *}"
1527     shift
1528     check_lib $name "$@" || die "ERROR: $name_version not found"
1529 }
1530
1531 require_cc(){
1532     log require_cc "$@"
1533     name="$1"
1534     check_cc "$@" || die "ERROR: $name failed"
1535 }
1536
1537 require_cpp(){
1538     name="$1"
1539     headers="$2"
1540     classes="$3"
1541     shift 3
1542     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1543 }
1544
1545 require_headers(){
1546     log require_headers "$@"
1547     headers="$1"
1548     check_headers "$@" || die "ERROR: $headers not found"
1549 }
1550
1551 require_cpp_condition(){
1552     log require_cpp_condition "$@"
1553     condition="$3"
1554     check_cpp_condition "$@" || die "ERROR: $condition not satisfied"
1555 }
1556
1557 require_pkg_config(){
1558     log require_pkg_config "$@"
1559     pkg_version="$2"
1560     check_pkg_config "$@" || die "ERROR: $pkg_version not found using pkg-config$pkg_config_fail_message"
1561 }
1562
1563 test_host_cc(){
1564     log test_host_cc "$@"
1565     cat > $TMPC
1566     log_file $TMPC
1567     test_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1568 }
1569
1570 test_host_cpp(){
1571     log test_host_cpp "$@"
1572     cat > $TMPC
1573     log_file $TMPC
1574     test_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1575 }
1576
1577 check_host_cppflags(){
1578     log check_host_cppflags "$@"
1579     test_host_cpp "$@" <<EOF && append host_cppflags "$@"
1580 #include <stdlib.h>
1581 EOF
1582 }
1583
1584 check_host_cflags(){
1585     log check_host_cflags "$@"
1586     set -- $($host_cflags_filter "$@")
1587     test_host_cc "$@" <<EOF && append host_cflags "$@"
1588 int x;
1589 EOF
1590 }
1591
1592 test_host_cpp_condition(){
1593     log test_host_cpp_condition "$@"
1594     header=$1
1595     condition=$2
1596     shift 2
1597     test_host_cpp "$@" <<EOF
1598 #include <$header>
1599 #if !($condition)
1600 #error "unsatisfied condition: $condition"
1601 #endif
1602 EOF
1603 }
1604
1605 check_host_cpp_condition(){
1606     log check_host_cpp_condition "$@"
1607     name=$1
1608     shift 1
1609     disable $name
1610     test_host_cpp_condition "$@" && enable $name
1611 }
1612
1613 cp_if_changed(){
1614     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1615     mkdir -p "$(dirname $2)"
1616     cp -f "$1" "$2"
1617 }
1618
1619 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1620 # system-dependent things.
1621
1622 AVCODEC_COMPONENTS="
1623     bsfs
1624     decoders
1625     encoders
1626     hwaccels
1627     parsers
1628 "
1629
1630 AVDEVICE_COMPONENTS="
1631     indevs
1632     outdevs
1633 "
1634
1635 AVFILTER_COMPONENTS="
1636     filters
1637 "
1638
1639 AVFORMAT_COMPONENTS="
1640     demuxers
1641     muxers
1642     protocols
1643 "
1644
1645 COMPONENT_LIST="
1646     $AVCODEC_COMPONENTS
1647     $AVDEVICE_COMPONENTS
1648     $AVFILTER_COMPONENTS
1649     $AVFORMAT_COMPONENTS
1650 "
1651
1652 EXAMPLE_LIST="
1653     avio_dir_cmd_example
1654     avio_reading_example
1655     decode_audio_example
1656     decode_video_example
1657     demuxing_decoding_example
1658     encode_audio_example
1659     encode_video_example
1660     extract_mvs_example
1661     filter_audio_example
1662     filtering_audio_example
1663     filtering_video_example
1664     http_multiclient_example
1665     hw_decode_example
1666     metadata_example
1667     muxing_example
1668     qsvdec_example
1669     remuxing_example
1670     resampling_audio_example
1671     scaling_video_example
1672     transcode_aac_example
1673     transcoding_example
1674     vaapi_encode_example
1675     vaapi_transcode_example
1676 "
1677
1678 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1679     alsa
1680     appkit
1681     avfoundation
1682     bzlib
1683     coreimage
1684     iconv
1685     libxcb
1686     libxcb_shm
1687     libxcb_shape
1688     libxcb_xfixes
1689     lzma
1690     schannel
1691     sdl2
1692     securetransport
1693     sndio
1694     xlib
1695     zlib
1696 "
1697
1698 EXTERNAL_LIBRARY_GPL_LIST="
1699     avisynth
1700     frei0r
1701     libcdio
1702     libdavs2
1703     librubberband
1704     libvidstab
1705     libx264
1706     libx265
1707     libxavs
1708     libxavs2
1709     libxvid
1710 "
1711
1712 EXTERNAL_LIBRARY_NONFREE_LIST="
1713     decklink
1714     libndi_newtek
1715     libfdk_aac
1716     openssl
1717     libtls
1718 "
1719
1720 EXTERNAL_LIBRARY_VERSION3_LIST="
1721     gmp
1722     libaribb24
1723     liblensfun
1724     libopencore_amrnb
1725     libopencore_amrwb
1726     libvmaf
1727     libvo_amrwbenc
1728     mbedtls
1729     rkmpp
1730 "
1731
1732 EXTERNAL_LIBRARY_GPLV3_LIST="
1733     libsmbclient
1734 "
1735
1736 EXTERNAL_LIBRARY_LIST="
1737     $EXTERNAL_LIBRARY_GPL_LIST
1738     $EXTERNAL_LIBRARY_NONFREE_LIST
1739     $EXTERNAL_LIBRARY_VERSION3_LIST
1740     $EXTERNAL_LIBRARY_GPLV3_LIST
1741     chromaprint
1742     gcrypt
1743     gnutls
1744     jni
1745     ladspa
1746     libaom
1747     libass
1748     libbluray
1749     libbs2b
1750     libcaca
1751     libcelt
1752     libcodec2
1753     libdav1d
1754     libdc1394
1755     libdrm
1756     libflite
1757     libfontconfig
1758     libfreetype
1759     libfribidi
1760     libgme
1761     libgsm
1762     libiec61883
1763     libilbc
1764     libjack
1765     libklvanc
1766     libkvazaar
1767     libmodplug
1768     libmp3lame
1769     libmysofa
1770     libopencv
1771     libopenh264
1772     libopenjpeg
1773     libopenmpt
1774     libopus
1775     libpulse
1776     librsvg
1777     librtmp
1778     libshine
1779     libsmbclient
1780     libsnappy
1781     libsoxr
1782     libspeex
1783     libsrt
1784     libssh
1785     libtensorflow
1786     libtesseract
1787     libtheora
1788     libtwolame
1789     libv4l2
1790     libvorbis
1791     libvpx
1792     libwavpack
1793     libwebp
1794     libxml2
1795     libzimg
1796     libzmq
1797     libzvbi
1798     lv2
1799     mediacodec
1800     openal
1801     opengl
1802     vapoursynth
1803 "
1804
1805 HWACCEL_AUTODETECT_LIBRARY_LIST="
1806     amf
1807     audiotoolbox
1808     crystalhd
1809     cuda
1810     cuvid
1811     d3d11va
1812     dxva2
1813     ffnvcodec
1814     nvdec
1815     nvenc
1816     vaapi
1817     vdpau
1818     videotoolbox
1819     v4l2_m2m
1820     xvmc
1821 "
1822
1823 # catchall list of things that require external libs to link
1824 EXTRALIBS_LIST="
1825     cpu_init
1826     cws2fws
1827 "
1828
1829 HWACCEL_LIBRARY_NONFREE_LIST="
1830     cuda_nvcc
1831     cuda_sdk
1832     libnpp
1833 "
1834
1835 HWACCEL_LIBRARY_LIST="
1836     $HWACCEL_LIBRARY_NONFREE_LIST
1837     libmfx
1838     mmal
1839     omx
1840     opencl
1841 "
1842
1843 DOCUMENT_LIST="
1844     doc
1845     htmlpages
1846     manpages
1847     podpages
1848     txtpages
1849 "
1850
1851 FEATURE_LIST="
1852     ftrapv
1853     gray
1854     hardcoded_tables
1855     omx_rpi
1856     runtime_cpudetect
1857     safe_bitstream_reader
1858     shared
1859     small
1860     static
1861     swscale_alpha
1862 "
1863
1864 # this list should be kept in linking order
1865 LIBRARY_LIST="
1866     avdevice
1867     avfilter
1868     swscale
1869     postproc
1870     avformat
1871     avcodec
1872     swresample
1873     avresample
1874     avutil
1875 "
1876
1877 LICENSE_LIST="
1878     gpl
1879     nonfree
1880     version3
1881 "
1882
1883 PROGRAM_LIST="
1884     ffplay
1885     ffprobe
1886     ffmpeg
1887 "
1888
1889 SUBSYSTEM_LIST="
1890     dct
1891     dwt
1892     error_resilience
1893     faan
1894     fast_unaligned
1895     fft
1896     lsp
1897     lzo
1898     mdct
1899     pixelutils
1900     network
1901     rdft
1902 "
1903
1904 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1905 CONFIG_LIST="
1906     $DOCUMENT_LIST
1907     $EXAMPLE_LIST
1908     $EXTERNAL_LIBRARY_LIST
1909     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1910     $HWACCEL_LIBRARY_LIST
1911     $HWACCEL_AUTODETECT_LIBRARY_LIST
1912     $FEATURE_LIST
1913     $LICENSE_LIST
1914     $LIBRARY_LIST
1915     $PROGRAM_LIST
1916     $SUBSYSTEM_LIST
1917     autodetect
1918     fontconfig
1919     linux_perf
1920     memory_poisoning
1921     neon_clobber_test
1922     ossfuzz
1923     pic
1924     thumb
1925     valgrind_backtrace
1926     xmm_clobber_test
1927     $COMPONENT_LIST
1928 "
1929
1930 THREADS_LIST="
1931     pthreads
1932     os2threads
1933     w32threads
1934 "
1935
1936 ATOMICS_LIST="
1937     atomics_gcc
1938     atomics_suncc
1939     atomics_win32
1940 "
1941
1942 AUTODETECT_LIBS="
1943     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1944     $HWACCEL_AUTODETECT_LIBRARY_LIST
1945     $THREADS_LIST
1946 "
1947
1948 ARCH_LIST="
1949     aarch64
1950     alpha
1951     arm
1952     avr32
1953     avr32_ap
1954     avr32_uc
1955     bfin
1956     ia64
1957     m68k
1958     mips
1959     mips64
1960     parisc
1961     ppc
1962     ppc64
1963     s390
1964     sh4
1965     sparc
1966     sparc64
1967     tilegx
1968     tilepro
1969     tomi
1970     x86
1971     x86_32
1972     x86_64
1973 "
1974
1975 ARCH_EXT_LIST_ARM="
1976     armv5te
1977     armv6
1978     armv6t2
1979     armv8
1980     neon
1981     vfp
1982     vfpv3
1983     setend
1984 "
1985
1986 ARCH_EXT_LIST_MIPS="
1987     mipsfpu
1988     mips32r2
1989     mips32r5
1990     mips64r2
1991     mips32r6
1992     mips64r6
1993     mipsdsp
1994     mipsdspr2
1995     msa
1996 "
1997
1998 ARCH_EXT_LIST_LOONGSON="
1999     loongson2
2000     loongson3
2001     mmi
2002 "
2003
2004 ARCH_EXT_LIST_X86_SIMD="
2005     aesni
2006     amd3dnow
2007     amd3dnowext
2008     avx
2009     avx2
2010     avx512
2011     fma3
2012     fma4
2013     mmx
2014     mmxext
2015     sse
2016     sse2
2017     sse3
2018     sse4
2019     sse42
2020     ssse3
2021     xop
2022 "
2023
2024 ARCH_EXT_LIST_PPC="
2025     altivec
2026     dcbzl
2027     ldbrx
2028     power8
2029     ppc4xx
2030     vsx
2031 "
2032
2033 ARCH_EXT_LIST_X86="
2034     $ARCH_EXT_LIST_X86_SIMD
2035     cpunop
2036     i686
2037 "
2038
2039 ARCH_EXT_LIST="
2040     $ARCH_EXT_LIST_ARM
2041     $ARCH_EXT_LIST_PPC
2042     $ARCH_EXT_LIST_X86
2043     $ARCH_EXT_LIST_MIPS
2044     $ARCH_EXT_LIST_LOONGSON
2045 "
2046
2047 ARCH_FEATURES="
2048     aligned_stack
2049     fast_64bit
2050     fast_clz
2051     fast_cmov
2052     local_aligned
2053     simd_align_16
2054     simd_align_32
2055     simd_align_64
2056 "
2057
2058 BUILTIN_LIST="
2059     atomic_cas_ptr
2060     machine_rw_barrier
2061     MemoryBarrier
2062     mm_empty
2063     rdtsc
2064     sem_timedwait
2065     sync_val_compare_and_swap
2066 "
2067 HAVE_LIST_CMDLINE="
2068     inline_asm
2069     symver
2070     x86asm
2071 "
2072
2073 HAVE_LIST_PUB="
2074     bigendian
2075     fast_unaligned
2076 "
2077
2078 HEADERS_LIST="
2079     arpa_inet_h
2080     asm_types_h
2081     cdio_paranoia_h
2082     cdio_paranoia_paranoia_h
2083     cuda_h
2084     dispatch_dispatch_h
2085     dev_bktr_ioctl_bt848_h
2086     dev_bktr_ioctl_meteor_h
2087     dev_ic_bt8xx_h
2088     dev_video_bktr_ioctl_bt848_h
2089     dev_video_meteor_ioctl_meteor_h
2090     direct_h
2091     dirent_h
2092     dxgidebug_h
2093     dxva_h
2094     ES2_gl_h
2095     gsm_h
2096     io_h
2097     linux_perf_event_h
2098     machine_ioctl_bt848_h
2099     machine_ioctl_meteor_h
2100     malloc_h
2101     opencv2_core_core_c_h
2102     OpenGL_gl3_h
2103     poll_h
2104     sys_param_h
2105     sys_resource_h
2106     sys_select_h
2107     sys_soundcard_h
2108     sys_time_h
2109     sys_un_h
2110     sys_videoio_h
2111     termios_h
2112     udplite_h
2113     unistd_h
2114     valgrind_valgrind_h
2115     windows_h
2116     winsock2_h
2117 "
2118
2119 INTRINSICS_LIST="
2120     intrinsics_neon
2121 "
2122
2123 COMPLEX_FUNCS="
2124     cabs
2125     cexp
2126 "
2127
2128 MATH_FUNCS="
2129     atanf
2130     atan2f
2131     cbrt
2132     cbrtf
2133     copysign
2134     cosf
2135     erf
2136     exp2
2137     exp2f
2138     expf
2139     hypot
2140     isfinite
2141     isinf
2142     isnan
2143     ldexpf
2144     llrint
2145     llrintf
2146     log2
2147     log2f
2148     log10f
2149     lrint
2150     lrintf
2151     powf
2152     rint
2153     round
2154     roundf
2155     sinf
2156     trunc
2157     truncf
2158 "
2159
2160 SYSTEM_FEATURES="
2161     dos_paths
2162     libc_msvcrt
2163     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2164     section_data_rel_ro
2165     threads
2166     uwp
2167     winrt
2168 "
2169
2170 SYSTEM_FUNCS="
2171     access
2172     aligned_malloc
2173     arc4random
2174     clock_gettime
2175     closesocket
2176     CommandLineToArgvW
2177     fcntl
2178     getaddrinfo
2179     gethrtime
2180     getopt
2181     GetProcessAffinityMask
2182     GetProcessMemoryInfo
2183     GetProcessTimes
2184     getrusage
2185     GetSystemTimeAsFileTime
2186     gettimeofday
2187     glob
2188     glXGetProcAddress
2189     gmtime_r
2190     inet_aton
2191     isatty
2192     kbhit
2193     localtime_r
2194     lstat
2195     lzo1x_999_compress
2196     mach_absolute_time
2197     MapViewOfFile
2198     memalign
2199     mkstemp
2200     mmap
2201     mprotect
2202     nanosleep
2203     PeekNamedPipe
2204     posix_memalign
2205     pthread_cancel
2206     sched_getaffinity
2207     SecItemImport
2208     SetConsoleTextAttribute
2209     SetConsoleCtrlHandler
2210     setmode
2211     setrlimit
2212     Sleep
2213     strerror_r
2214     sysconf
2215     sysctl
2216     usleep
2217     UTGetOSTypeFromString
2218     VirtualAlloc
2219     wglGetProcAddress
2220 "
2221
2222 SYSTEM_LIBRARIES="
2223     bcrypt
2224     vaapi_drm
2225     vaapi_x11
2226     vdpau_x11
2227 "
2228
2229 TOOLCHAIN_FEATURES="
2230     as_arch_directive
2231     as_dn_directive
2232     as_fpu_directive
2233     as_func
2234     as_object_arch
2235     asm_mod_q
2236     blocks_extension
2237     ebp_available
2238     ebx_available
2239     gnu_as
2240     gnu_windres
2241     ibm_asm
2242     inline_asm_direct_symbol_refs
2243     inline_asm_labels
2244     inline_asm_nonlocal_labels
2245     pragma_deprecated
2246     rsync_contimeout
2247     symver_asm_label
2248     symver_gnu_asm
2249     vfp_args
2250     xform_asm
2251     xmm_clobbers
2252 "
2253
2254 TYPES_LIST="
2255     kCMVideoCodecType_HEVC
2256     socklen_t
2257     struct_addrinfo
2258     struct_group_source_req
2259     struct_ip_mreq_source
2260     struct_ipv6_mreq
2261     struct_msghdr_msg_flags
2262     struct_pollfd
2263     struct_rusage_ru_maxrss
2264     struct_sctp_event_subscribe
2265     struct_sockaddr_in6
2266     struct_sockaddr_sa_len
2267     struct_sockaddr_storage
2268     struct_stat_st_mtim_tv_nsec
2269     struct_v4l2_frmivalenum_discrete
2270 "
2271
2272 HAVE_LIST="
2273     $ARCH_EXT_LIST
2274     $(add_suffix _external $ARCH_EXT_LIST)
2275     $(add_suffix _inline   $ARCH_EXT_LIST)
2276     $ARCH_FEATURES
2277     $BUILTIN_LIST
2278     $COMPLEX_FUNCS
2279     $HAVE_LIST_CMDLINE
2280     $HAVE_LIST_PUB
2281     $HEADERS_LIST
2282     $INTRINSICS_LIST
2283     $MATH_FUNCS
2284     $SYSTEM_FEATURES
2285     $SYSTEM_FUNCS
2286     $SYSTEM_LIBRARIES
2287     $THREADS_LIST
2288     $TOOLCHAIN_FEATURES
2289     $TYPES_LIST
2290     makeinfo
2291     makeinfo_html
2292     opencl_d3d11
2293     opencl_drm_arm
2294     opencl_drm_beignet
2295     opencl_dxva2
2296     opencl_vaapi_beignet
2297     opencl_vaapi_intel_media
2298     perl
2299     pod2man
2300     texi2html
2301 "
2302
2303 # options emitted with CONFIG_ prefix but not available on the command line
2304 CONFIG_EXTRA="
2305     aandcttables
2306     ac3dsp
2307     adts_header
2308     audio_frame_queue
2309     audiodsp
2310     blockdsp
2311     bswapdsp
2312     cabac
2313     cbs
2314     cbs_av1
2315     cbs_h264
2316     cbs_h265
2317     cbs_jpeg
2318     cbs_mpeg2
2319     cbs_vp9
2320     dirac_parse
2321     dnn
2322     dvprofile
2323     exif
2324     faandct
2325     faanidct
2326     fdctdsp
2327     flacdsp
2328     fmtconvert
2329     frame_thread_encoder
2330     g722dsp
2331     golomb
2332     gplv3
2333     h263dsp
2334     h264chroma
2335     h264dsp
2336     h264parse
2337     h264pred
2338     h264qpel
2339     hevcparse
2340     hpeldsp
2341     huffman
2342     huffyuvdsp
2343     huffyuvencdsp
2344     idctdsp
2345     iirfilter
2346     mdct15
2347     intrax8
2348     iso_media
2349     ividsp
2350     jpegtables
2351     lgplv3
2352     libx262
2353     llauddsp
2354     llviddsp
2355     llvidencdsp
2356     lpc
2357     lzf
2358     me_cmp
2359     mpeg_er
2360     mpegaudio
2361     mpegaudiodsp
2362     mpegaudioheader
2363     mpegvideo
2364     mpegvideoenc
2365     mss34dsp
2366     pixblockdsp
2367     qpeldsp
2368     qsv
2369     qsvdec
2370     qsvenc
2371     qsvvpp
2372     rangecoder
2373     riffdec
2374     riffenc
2375     rtpdec
2376     rtpenc_chain
2377     rv34dsp
2378     scene_sad
2379     sinewin
2380     snappy
2381     srtp
2382     startcode
2383     texturedsp
2384     texturedspenc
2385     tpeldsp
2386     vaapi_1
2387     vaapi_encode
2388     vc1dsp
2389     videodsp
2390     vp3dsp
2391     vp56dsp
2392     vp8dsp
2393     wma_freqs
2394     wmv2dsp
2395 "
2396
2397 CMDLINE_SELECT="
2398     $ARCH_EXT_LIST
2399     $CONFIG_LIST
2400     $HAVE_LIST_CMDLINE
2401     $THREADS_LIST
2402     asm
2403     cross_compile
2404     debug
2405     extra_warnings
2406     logging
2407     lto
2408     optimizations
2409     rpath
2410     stripping
2411 "
2412
2413 PATHS_LIST="
2414     bindir
2415     datadir
2416     docdir
2417     incdir
2418     libdir
2419     mandir
2420     pkgconfigdir
2421     prefix
2422     shlibdir
2423     install_name_dir
2424 "
2425
2426 CMDLINE_SET="
2427     $PATHS_LIST
2428     ar
2429     arch
2430     as
2431     assert_level
2432     build_suffix
2433     cc
2434     objcc
2435     cpu
2436     cross_prefix
2437     custom_allocator
2438     cxx
2439     dep_cc
2440     doxygen
2441     env
2442     extra_version
2443     gas
2444     host_cc
2445     host_cflags
2446     host_extralibs
2447     host_ld
2448     host_ldflags
2449     host_os
2450     ignore_tests
2451     install
2452     ld
2453     ln_s
2454     logfile
2455     malloc_prefix
2456     nm
2457     optflags
2458     nvcc
2459     nvccflags
2460     pkg_config
2461     pkg_config_flags
2462     progs_suffix
2463     random_seed
2464     ranlib
2465     samples
2466     strip
2467     sws_max_filter_size
2468     sysinclude
2469     sysroot
2470     target_exec
2471     target_os
2472     target_path
2473     target_samples
2474     tempprefix
2475     toolchain
2476     valgrind
2477     windres
2478     x86asmexe
2479 "
2480
2481 CMDLINE_APPEND="
2482     extra_cflags
2483     extra_cxxflags
2484     extra_objcflags
2485     host_cppflags
2486 "
2487
2488 # code dependency declarations
2489
2490 # architecture extensions
2491
2492 armv5te_deps="arm"
2493 armv6_deps="arm"
2494 armv6t2_deps="arm"
2495 armv8_deps="aarch64"
2496 neon_deps_any="aarch64 arm"
2497 intrinsics_neon_deps="neon"
2498 vfp_deps_any="aarch64 arm"
2499 vfpv3_deps="vfp"
2500 setend_deps="arm"
2501
2502 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2503
2504 altivec_deps="ppc"
2505 dcbzl_deps="ppc"
2506 ldbrx_deps="ppc"
2507 ppc4xx_deps="ppc"
2508 vsx_deps="altivec"
2509 power8_deps="vsx"
2510
2511 loongson2_deps="mips"
2512 loongson3_deps="mips"
2513 mips32r2_deps="mips"
2514 mips32r5_deps="mips"
2515 mips32r6_deps="mips"
2516 mips64r2_deps="mips"
2517 mips64r6_deps="mips"
2518 mipsfpu_deps="mips"
2519 mipsdsp_deps="mips"
2520 mipsdspr2_deps="mips"
2521 mmi_deps="mips"
2522 msa_deps="mipsfpu"
2523
2524 cpunop_deps="i686"
2525 x86_64_select="i686"
2526 x86_64_suggest="fast_cmov"
2527
2528 amd3dnow_deps="mmx"
2529 amd3dnowext_deps="amd3dnow"
2530 i686_deps="x86"
2531 mmx_deps="x86"
2532 mmxext_deps="mmx"
2533 sse_deps="mmxext"
2534 sse2_deps="sse"
2535 sse3_deps="sse2"
2536 ssse3_deps="sse3"
2537 sse4_deps="ssse3"
2538 sse42_deps="sse4"
2539 aesni_deps="sse42"
2540 avx_deps="sse42"
2541 xop_deps="avx"
2542 fma3_deps="avx"
2543 fma4_deps="avx"
2544 avx2_deps="avx"
2545 avx512_deps="avx2"
2546
2547 mmx_external_deps="x86asm"
2548 mmx_inline_deps="inline_asm x86"
2549 mmx_suggest="mmx_external mmx_inline"
2550
2551 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2552     eval dep=\$${ext}_deps
2553     eval ${ext}_external_deps='"${dep}_external"'
2554     eval ${ext}_inline_deps='"${dep}_inline"'
2555     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2556 done
2557
2558 aligned_stack_if_any="aarch64 ppc x86"
2559 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2560 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2561 fast_unaligned_if_any="aarch64 ppc x86"
2562 simd_align_16_if_any="altivec neon sse"
2563 simd_align_32_if_any="avx"
2564 simd_align_64_if_any="avx512"
2565
2566 # system capabilities
2567 linux_perf_deps="linux_perf_event_h"
2568 symver_if_any="symver_asm_label symver_gnu_asm"
2569 valgrind_backtrace_conflict="optimizations"
2570 valgrind_backtrace_deps="valgrind_valgrind_h"
2571
2572 # threading support
2573 atomics_gcc_if="sync_val_compare_and_swap"
2574 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2575 atomics_win32_if="MemoryBarrier"
2576 atomics_native_if_any="$ATOMICS_LIST"
2577 w32threads_deps="atomics_native"
2578 threads_if_any="$THREADS_LIST"
2579
2580 # subsystems
2581 cbs_av1_select="cbs"
2582 cbs_h264_select="cbs golomb"
2583 cbs_h265_select="cbs golomb"
2584 cbs_jpeg_select="cbs"
2585 cbs_mpeg2_select="cbs"
2586 cbs_vp9_select="cbs"
2587 dct_select="rdft"
2588 dirac_parse_select="golomb"
2589 dnn_suggest="libtensorflow"
2590 error_resilience_select="me_cmp"
2591 faandct_deps="faan"
2592 faandct_select="fdctdsp"
2593 faanidct_deps="faan"
2594 faanidct_select="idctdsp"
2595 h264dsp_select="startcode"
2596 hevcparse_select="golomb"
2597 frame_thread_encoder_deps="encoders threads"
2598 intrax8_select="blockdsp idctdsp"
2599 mdct_select="fft"
2600 mdct15_select="fft"
2601 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2602 mpeg_er_select="error_resilience"
2603 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2604 mpegaudiodsp_select="dct"
2605 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2606 mpegvideoenc_select="aandcttables me_cmp mpegvideo pixblockdsp qpeldsp"
2607 vc1dsp_select="h264chroma qpeldsp startcode"
2608 rdft_select="fft"
2609
2610 # decoders / encoders
2611 aac_decoder_select="adts_header mdct15 mdct sinewin"
2612 aac_fixed_decoder_select="adts_header mdct sinewin"
2613 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2614 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2615 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2616 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2617 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2618 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2619 adpcm_g722_decoder_select="g722dsp"
2620 adpcm_g722_encoder_select="g722dsp"
2621 aic_decoder_select="golomb idctdsp"
2622 alac_encoder_select="lpc"
2623 als_decoder_select="bswapdsp"
2624 amrnb_decoder_select="lsp"
2625 amrwb_decoder_select="lsp"
2626 amv_decoder_select="sp5x_decoder exif"
2627 amv_encoder_select="jpegtables mpegvideoenc"
2628 ape_decoder_select="bswapdsp llauddsp"
2629 apng_decoder_deps="zlib"
2630 apng_encoder_deps="zlib"
2631 apng_encoder_select="llvidencdsp"
2632 aptx_decoder_select="audio_frame_queue"
2633 aptx_encoder_select="audio_frame_queue"
2634 aptx_hd_decoder_select="audio_frame_queue"
2635 aptx_hd_encoder_select="audio_frame_queue"
2636 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2637 asv1_encoder_select="aandcttables bswapdsp fdctdsp pixblockdsp"
2638 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2639 asv2_encoder_select="aandcttables bswapdsp fdctdsp pixblockdsp"
2640 atrac1_decoder_select="mdct sinewin"
2641 atrac3_decoder_select="mdct"
2642 atrac3p_decoder_select="mdct sinewin"
2643 atrac9_decoder_select="mdct"
2644 avrn_decoder_select="exif jpegtables"
2645 bink_decoder_select="blockdsp hpeldsp"
2646 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2647 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2648 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2649 clearvideo_decoder_select="idctdsp"
2650 cllc_decoder_select="bswapdsp"
2651 comfortnoise_encoder_select="lpc"
2652 cook_decoder_select="audiodsp mdct sinewin"
2653 cscd_decoder_select="lzo"
2654 cscd_decoder_suggest="zlib"
2655 dca_decoder_select="mdct"
2656 dds_decoder_select="texturedsp"
2657 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2658 dnxhd_decoder_select="blockdsp idctdsp"
2659 dnxhd_encoder_select="blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2660 dolby_e_decoder_select="mdct"
2661 dvvideo_decoder_select="dvprofile idctdsp"
2662 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2663 dxa_decoder_deps="zlib"
2664 dxv_decoder_select="lzf texturedsp"
2665 eac3_decoder_select="ac3_decoder"
2666 eac3_encoder_select="ac3_encoder"
2667 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2668 eatgq_decoder_select="aandcttables"
2669 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2670 exr_decoder_deps="zlib"
2671 ffv1_decoder_select="rangecoder"
2672 ffv1_encoder_select="rangecoder"
2673 ffvhuff_decoder_select="huffyuv_decoder"
2674 ffvhuff_encoder_select="huffyuv_encoder"
2675 fic_decoder_select="golomb"
2676 flac_decoder_select="flacdsp"
2677 flac_encoder_select="bswapdsp flacdsp lpc"
2678 flashsv2_decoder_deps="zlib"
2679 flashsv2_encoder_deps="zlib"
2680 flashsv_decoder_deps="zlib"
2681 flashsv_encoder_deps="zlib"
2682 flv_decoder_select="h263_decoder"
2683 flv_encoder_select="h263_encoder"
2684 fourxm_decoder_select="blockdsp bswapdsp"
2685 fraps_decoder_select="bswapdsp huffman"
2686 g2m_decoder_deps="zlib"
2687 g2m_decoder_select="blockdsp idctdsp jpegtables"
2688 g729_decoder_select="audiodsp"
2689 h261_decoder_select="mpegvideo"
2690 h261_encoder_select="mpegvideoenc"
2691 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2692 h263_encoder_select="h263dsp mpegvideoenc"
2693 h263i_decoder_select="h263_decoder"
2694 h263p_decoder_select="h263_decoder"
2695 h263p_encoder_select="h263_encoder"
2696 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2697 h264_decoder_suggest="error_resilience"
2698 hap_decoder_select="snappy texturedsp"
2699 hap_encoder_deps="libsnappy"
2700 hap_encoder_select="texturedspenc"
2701 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2702 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2703 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2704 hymt_decoder_select="huffyuv_decoder"
2705 iac_decoder_select="imc_decoder"
2706 imc_decoder_select="bswapdsp fft mdct sinewin"
2707 indeo3_decoder_select="hpeldsp"
2708 indeo4_decoder_select="ividsp"
2709 indeo5_decoder_select="ividsp"
2710 interplay_video_decoder_select="hpeldsp"
2711 jpegls_decoder_select="mjpeg_decoder"
2712 jv_decoder_select="blockdsp"
2713 lagarith_decoder_select="llviddsp"
2714 ljpeg_encoder_select="idctdsp jpegtables mpegvideoenc"
2715 magicyuv_decoder_select="llviddsp"
2716 magicyuv_encoder_select="llvidencdsp"
2717 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2718 metasound_decoder_select="lsp mdct sinewin"
2719 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2720 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2721 mjpeg_encoder_select="jpegtables mpegvideoenc"
2722 mjpegb_decoder_select="mjpeg_decoder"
2723 mlp_decoder_select="mlp_parser"
2724 mlp_encoder_select="lpc audio_frame_queue"
2725 motionpixels_decoder_select="bswapdsp"
2726 mp1_decoder_select="mpegaudio"
2727 mp1float_decoder_select="mpegaudio"
2728 mp2_decoder_select="mpegaudio"
2729 mp2float_decoder_select="mpegaudio"
2730 mp3_decoder_select="mpegaudio"
2731 mp3adu_decoder_select="mpegaudio"
2732 mp3adufloat_decoder_select="mpegaudio"
2733 mp3float_decoder_select="mpegaudio"
2734 mp3on4_decoder_select="mpegaudio"
2735 mp3on4float_decoder_select="mpegaudio"
2736 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2737 mpc8_decoder_select="mpegaudiodsp"
2738 mpegvideo_decoder_select="mpegvideo"
2739 mpeg1video_decoder_select="mpegvideo"
2740 mpeg1video_encoder_select="mpegvideoenc h263dsp"
2741 mpeg2video_decoder_select="mpegvideo"
2742 mpeg2video_encoder_select="mpegvideoenc h263dsp"
2743 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2744 mpeg4_encoder_select="h263_encoder"
2745 msa1_decoder_select="mss34dsp"
2746 mscc_decoder_deps="zlib"
2747 msmpeg4v1_decoder_select="h263_decoder"
2748 msmpeg4v2_decoder_select="h263_decoder"
2749 msmpeg4v2_encoder_select="h263_encoder"
2750 msmpeg4v3_decoder_select="h263_decoder"
2751 msmpeg4v3_encoder_select="h263_encoder"
2752 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2753 mts2_decoder_select="mss34dsp"
2754 mwsc_decoder_deps="zlib"
2755 mxpeg_decoder_select="mjpeg_decoder"
2756 nellymoser_decoder_select="mdct sinewin"
2757 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2758 nuv_decoder_select="idctdsp lzo"
2759 on2avc_decoder_select="mdct"
2760 opus_decoder_deps="swresample"
2761 opus_decoder_select="mdct15"
2762 opus_encoder_select="audio_frame_queue mdct15"
2763 png_decoder_deps="zlib"
2764 png_encoder_deps="zlib"
2765 png_encoder_select="llvidencdsp"
2766 prores_decoder_select="blockdsp idctdsp"
2767 prores_encoder_select="fdctdsp"
2768 qcelp_decoder_select="lsp"
2769 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2770 ra_144_decoder_select="audiodsp"
2771 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2772 ralf_decoder_select="golomb"
2773 rasc_decoder_deps="zlib"
2774 rawvideo_decoder_select="bswapdsp"
2775 rscc_decoder_deps="zlib"
2776 rtjpeg_decoder_select="me_cmp"
2777 rv10_decoder_select="h263_decoder"
2778 rv10_encoder_select="h263_encoder"
2779 rv20_decoder_select="h263_decoder"
2780 rv20_encoder_select="h263_encoder"
2781 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2782 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2783 screenpresso_decoder_deps="zlib"
2784 shorten_decoder_select="bswapdsp"
2785 sipr_decoder_select="lsp"
2786 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2787 snow_encoder_select="dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2788 sonic_decoder_select="golomb rangecoder"
2789 sonic_encoder_select="golomb rangecoder"
2790 sonic_ls_encoder_select="golomb rangecoder"
2791 sp5x_decoder_select="mjpeg_decoder"
2792 speedhq_decoder_select="mpegvideo"
2793 srgc_decoder_deps="zlib"
2794 svq1_decoder_select="hpeldsp"
2795 svq1_encoder_select="hpeldsp me_cmp mpegvideoenc"
2796 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2797 svq3_decoder_suggest="zlib"
2798 tak_decoder_select="audiodsp"
2799 tdsc_decoder_deps="zlib"
2800 tdsc_decoder_select="mjpeg_decoder"
2801 theora_decoder_select="vp3_decoder"
2802 thp_decoder_select="mjpeg_decoder"
2803 tiff_decoder_suggest="zlib lzma"
2804 tiff_encoder_suggest="zlib"
2805 truehd_decoder_select="mlp_parser"
2806 truehd_encoder_select="lpc audio_frame_queue"
2807 truemotion2_decoder_select="bswapdsp"
2808 truespeech_decoder_select="bswapdsp"
2809 tscc_decoder_deps="zlib"
2810 twinvq_decoder_select="mdct lsp sinewin"
2811 txd_decoder_select="texturedsp"
2812 utvideo_decoder_select="bswapdsp llviddsp"
2813 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2814 vble_decoder_select="llviddsp"
2815 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2816 vc1image_decoder_select="vc1_decoder"
2817 vorbis_decoder_select="mdct"
2818 vorbis_encoder_select="audio_frame_queue mdct"
2819 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2820 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2821 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2822 vp6a_decoder_select="vp6_decoder"
2823 vp6f_decoder_select="vp6_decoder"
2824 vp7_decoder_select="h264pred videodsp vp8dsp"
2825 vp8_decoder_select="h264pred videodsp vp8dsp"
2826 vp9_decoder_select="videodsp vp9_parser vp9_superframe_split_bsf"
2827 wcmv_decoder_deps="zlib"
2828 webp_decoder_select="vp8_decoder exif"
2829 wmalossless_decoder_select="llauddsp"
2830 wmapro_decoder_select="mdct sinewin wma_freqs"
2831 wmav1_decoder_select="mdct sinewin wma_freqs"
2832 wmav1_encoder_select="mdct sinewin wma_freqs"
2833 wmav2_decoder_select="mdct sinewin wma_freqs"
2834 wmav2_encoder_select="mdct sinewin wma_freqs"
2835 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2836 wmv1_decoder_select="h263_decoder"
2837 wmv1_encoder_select="h263_encoder"
2838 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2839 wmv2_encoder_select="h263_encoder wmv2dsp"
2840 wmv3_decoder_select="vc1_decoder"
2841 wmv3image_decoder_select="wmv3_decoder"
2842 xma1_decoder_select="wmapro_decoder"
2843 xma2_decoder_select="wmapro_decoder"
2844 zerocodec_decoder_deps="zlib"
2845 zlib_decoder_deps="zlib"
2846 zlib_encoder_deps="zlib"
2847 zmbv_decoder_deps="zlib"
2848 zmbv_encoder_deps="zlib"
2849
2850 # hardware accelerators
2851 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2852 cuda_deps="ffnvcodec"
2853 cuvid_deps="ffnvcodec"
2854 d3d11va_deps="dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2855 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2856 ffnvcodec_deps_any="libdl LoadLibrary"
2857 nvdec_deps="ffnvcodec"
2858 vaapi_x11_deps="xlib"
2859 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2860 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2861 xvmc_deps="X11_extensions_XvMClib_h"
2862
2863 h263_vaapi_hwaccel_deps="vaapi"
2864 h263_vaapi_hwaccel_select="h263_decoder"
2865 h263_videotoolbox_hwaccel_deps="videotoolbox"
2866 h263_videotoolbox_hwaccel_select="h263_decoder"
2867 h264_d3d11va_hwaccel_deps="d3d11va"
2868 h264_d3d11va_hwaccel_select="h264_decoder"
2869 h264_d3d11va2_hwaccel_deps="d3d11va"
2870 h264_d3d11va2_hwaccel_select="h264_decoder"
2871 h264_dxva2_hwaccel_deps="dxva2"
2872 h264_dxva2_hwaccel_select="h264_decoder"
2873 h264_nvdec_hwaccel_deps="nvdec"
2874 h264_nvdec_hwaccel_select="h264_decoder"
2875 h264_vaapi_hwaccel_deps="vaapi"
2876 h264_vaapi_hwaccel_select="h264_decoder"
2877 h264_vdpau_hwaccel_deps="vdpau"
2878 h264_vdpau_hwaccel_select="h264_decoder"
2879 h264_videotoolbox_hwaccel_deps="videotoolbox"
2880 h264_videotoolbox_hwaccel_select="h264_decoder"
2881 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2882 hevc_d3d11va_hwaccel_select="hevc_decoder"
2883 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2884 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2885 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2886 hevc_dxva2_hwaccel_select="hevc_decoder"
2887 hevc_nvdec_hwaccel_deps="nvdec"
2888 hevc_nvdec_hwaccel_select="hevc_decoder"
2889 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2890 hevc_vaapi_hwaccel_select="hevc_decoder"
2891 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2892 hevc_vdpau_hwaccel_select="hevc_decoder"
2893 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2894 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2895 mjpeg_nvdec_hwaccel_deps="nvdec"
2896 mjpeg_nvdec_hwaccel_select="mjpeg_decoder"
2897 mjpeg_vaapi_hwaccel_deps="vaapi"
2898 mjpeg_vaapi_hwaccel_select="mjpeg_decoder"
2899 mpeg_xvmc_hwaccel_deps="xvmc"
2900 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2901 mpeg1_nvdec_hwaccel_deps="nvdec"
2902 mpeg1_nvdec_hwaccel_select="mpeg1video_decoder"
2903 mpeg1_vdpau_hwaccel_deps="vdpau"
2904 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2905 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2906 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2907 mpeg1_xvmc_hwaccel_deps="xvmc"
2908 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2909 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2910 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2911 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2912 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2913 mpeg2_dxva2_hwaccel_deps="dxva2"
2914 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2915 mpeg2_nvdec_hwaccel_deps="nvdec"
2916 mpeg2_nvdec_hwaccel_select="mpeg2video_decoder"
2917 mpeg2_vaapi_hwaccel_deps="vaapi"
2918 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2919 mpeg2_vdpau_hwaccel_deps="vdpau"
2920 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2921 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2922 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2923 mpeg2_xvmc_hwaccel_deps="xvmc"
2924 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2925 mpeg4_nvdec_hwaccel_deps="nvdec"
2926 mpeg4_nvdec_hwaccel_select="mpeg4_decoder"
2927 mpeg4_vaapi_hwaccel_deps="vaapi"
2928 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2929 mpeg4_vdpau_hwaccel_deps="vdpau"
2930 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2931 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2932 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2933 vc1_d3d11va_hwaccel_deps="d3d11va"
2934 vc1_d3d11va_hwaccel_select="vc1_decoder"
2935 vc1_d3d11va2_hwaccel_deps="d3d11va"
2936 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2937 vc1_dxva2_hwaccel_deps="dxva2"
2938 vc1_dxva2_hwaccel_select="vc1_decoder"
2939 vc1_nvdec_hwaccel_deps="nvdec"
2940 vc1_nvdec_hwaccel_select="vc1_decoder"
2941 vc1_vaapi_hwaccel_deps="vaapi"
2942 vc1_vaapi_hwaccel_select="vc1_decoder"
2943 vc1_vdpau_hwaccel_deps="vdpau"
2944 vc1_vdpau_hwaccel_select="vc1_decoder"
2945 vp8_nvdec_hwaccel_deps="nvdec"
2946 vp8_nvdec_hwaccel_select="vp8_decoder"
2947 vp8_vaapi_hwaccel_deps="vaapi"
2948 vp8_vaapi_hwaccel_select="vp8_decoder"
2949 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2950 vp9_d3d11va_hwaccel_select="vp9_decoder"
2951 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2952 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2953 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2954 vp9_dxva2_hwaccel_select="vp9_decoder"
2955 vp9_nvdec_hwaccel_deps="nvdec"
2956 vp9_nvdec_hwaccel_select="vp9_decoder"
2957 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2958 vp9_vaapi_hwaccel_select="vp9_decoder"
2959 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2960 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2961 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2962 wmv3_nvdec_hwaccel_select="vc1_nvdec_hwaccel"
2963 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2964 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2965
2966 # hardware-accelerated codecs
2967 omx_deps="libdl pthreads"
2968 omx_rpi_select="omx"
2969 qsv_deps="libmfx"
2970 qsvdec_select="qsv"
2971 qsvenc_select="qsv"
2972 qsvvpp_select="qsv"
2973 vaapi_encode_deps="vaapi"
2974 v4l2_m2m_deps="linux_videodev2_h sem_timedwait"
2975
2976 hwupload_cuda_filter_deps="ffnvcodec"
2977 scale_npp_filter_deps="ffnvcodec libnpp"
2978 scale_cuda_filter_deps="cuda_sdk"
2979 thumbnail_cuda_filter_deps="cuda_sdk"
2980 transpose_npp_filter_deps="ffnvcodec libnpp"
2981
2982 amf_deps_any="libdl LoadLibrary"
2983 nvenc_deps="ffnvcodec"
2984 nvenc_deps_any="libdl LoadLibrary"
2985 nvenc_encoder_deps="nvenc"
2986
2987 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
2988 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
2989 h264_amf_encoder_deps="amf"
2990 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2991 h264_cuvid_decoder_deps="cuvid"
2992 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2993 h264_mediacodec_decoder_deps="mediacodec"
2994 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2995 h264_mmal_decoder_deps="mmal"
2996 h264_nvenc_encoder_deps="nvenc"
2997 h264_omx_encoder_deps="omx"
2998 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec"
2999 h264_qsv_encoder_select="qsvenc"
3000 h264_rkmpp_decoder_deps="rkmpp"
3001 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
3002 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
3003 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
3004 h264_v4l2m2m_decoder_select="h264_mp4toannexb_bsf"
3005 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
3006 hevc_amf_encoder_deps="amf"
3007 hevc_cuvid_decoder_deps="cuvid"
3008 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
3009 hevc_mediacodec_decoder_deps="mediacodec"
3010 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
3011 hevc_nvenc_encoder_deps="nvenc"
3012 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec"
3013 hevc_qsv_encoder_select="hevcparse qsvenc"
3014 hevc_rkmpp_decoder_deps="rkmpp"
3015 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
3016 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
3017 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
3018 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
3019 hevc_v4l2m2m_decoder_select="hevc_mp4toannexb_bsf"
3020 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
3021 mjpeg_cuvid_decoder_deps="cuvid"
3022 mjpeg_qsv_encoder_deps="libmfx"
3023 mjpeg_qsv_encoder_select="qsvenc"
3024 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
3025 mjpeg_vaapi_encoder_select="cbs_jpeg jpegtables vaapi_encode"
3026 mpeg1_cuvid_decoder_deps="cuvid"
3027 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
3028 mpeg2_crystalhd_decoder_select="crystalhd"
3029 mpeg2_cuvid_decoder_deps="cuvid"
3030 mpeg2_mmal_decoder_deps="mmal"
3031 mpeg2_mediacodec_decoder_deps="mediacodec"
3032 mpeg2_qsv_decoder_select="qsvdec mpegvideo_parser"
3033 mpeg2_qsv_encoder_select="qsvenc"
3034 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
3035 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
3036 mpeg4_crystalhd_decoder_select="crystalhd"
3037 mpeg4_cuvid_decoder_deps="cuvid"
3038 mpeg4_mediacodec_decoder_deps="mediacodec"
3039 mpeg4_mmal_decoder_deps="mmal"
3040 mpeg4_omx_encoder_deps="omx"
3041 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
3042 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
3043 msmpeg4_crystalhd_decoder_select="crystalhd"
3044 nvenc_h264_encoder_select="h264_nvenc_encoder"
3045 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
3046 vc1_crystalhd_decoder_select="crystalhd"
3047 vc1_cuvid_decoder_deps="cuvid"
3048 vc1_mmal_decoder_deps="mmal"
3049 vc1_qsv_decoder_select="qsvdec vc1_parser"
3050 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
3051 vp8_cuvid_decoder_deps="cuvid"
3052 vp8_mediacodec_decoder_deps="mediacodec"
3053 vp8_qsv_decoder_select="qsvdec vp8_parser"
3054 vp8_rkmpp_decoder_deps="rkmpp"
3055 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
3056 vp8_vaapi_encoder_select="vaapi_encode"
3057 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
3058 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
3059 vp9_cuvid_decoder_deps="cuvid"
3060 vp9_mediacodec_decoder_deps="mediacodec"
3061 vp9_rkmpp_decoder_deps="rkmpp"
3062 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
3063 vp9_vaapi_encoder_select="vaapi_encode"
3064 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
3065 wmv3_crystalhd_decoder_select="crystalhd"
3066
3067 # parsers
3068 aac_parser_select="adts_header"
3069 av1_parser_select="cbs_av1"
3070 h264_parser_select="golomb h264dsp h264parse"
3071 hevc_parser_select="hevcparse"
3072 mpegaudio_parser_select="mpegaudioheader"
3073 mpegvideo_parser_select="mpegvideo"
3074 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
3075 vc1_parser_select="vc1dsp"
3076
3077 # bitstream_filters
3078 aac_adtstoasc_bsf_select="adts_header"
3079 av1_metadata_bsf_select="cbs_av1"
3080 eac3_core_bsf_select="ac3_parser"
3081 filter_units_bsf_select="cbs"
3082 h264_metadata_bsf_deps="const_nan"
3083 h264_metadata_bsf_select="cbs_h264"
3084 h264_redundant_pps_bsf_select="cbs_h264"
3085 hevc_metadata_bsf_select="cbs_h265"
3086 mjpeg2jpeg_bsf_select="jpegtables"
3087 mpeg2_metadata_bsf_select="cbs_mpeg2"
3088 trace_headers_bsf_select="cbs"
3089 truehd_core_bsf_select="mlp_parser"
3090 vp9_metadata_bsf_select="cbs_vp9"
3091
3092 # external libraries
3093 aac_at_decoder_deps="audiotoolbox"
3094 aac_at_decoder_select="aac_adtstoasc_bsf"
3095 ac3_at_decoder_deps="audiotoolbox"
3096 ac3_at_decoder_select="ac3_parser"
3097 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
3098 alac_at_decoder_deps="audiotoolbox"
3099 amr_nb_at_decoder_deps="audiotoolbox"
3100 avisynth_deps_any="libdl LoadLibrary"
3101 avisynth_demuxer_deps="avisynth"
3102 avisynth_demuxer_select="riffdec"
3103 eac3_at_decoder_deps="audiotoolbox"
3104 eac3_at_decoder_select="ac3_parser"
3105 gsm_ms_at_decoder_deps="audiotoolbox"
3106 ilbc_at_decoder_deps="audiotoolbox"
3107 mp1_at_decoder_deps="audiotoolbox"
3108 mp2_at_decoder_deps="audiotoolbox"
3109 mp3_at_decoder_deps="audiotoolbox"
3110 mp1_at_decoder_select="mpegaudioheader"
3111 mp2_at_decoder_select="mpegaudioheader"
3112 mp3_at_decoder_select="mpegaudioheader"
3113 pcm_alaw_at_decoder_deps="audiotoolbox"
3114 pcm_mulaw_at_decoder_deps="audiotoolbox"
3115 qdmc_at_decoder_deps="audiotoolbox"
3116 qdm2_at_decoder_deps="audiotoolbox"
3117 aac_at_encoder_deps="audiotoolbox"
3118 aac_at_encoder_select="audio_frame_queue"
3119 alac_at_encoder_deps="audiotoolbox"
3120 alac_at_encoder_select="audio_frame_queue"
3121 ilbc_at_encoder_deps="audiotoolbox"
3122 ilbc_at_encoder_select="audio_frame_queue"
3123 pcm_alaw_at_encoder_deps="audiotoolbox"
3124 pcm_alaw_at_encoder_select="audio_frame_queue"
3125 pcm_mulaw_at_encoder_deps="audiotoolbox"
3126 pcm_mulaw_at_encoder_select="audio_frame_queue"
3127 chromaprint_muxer_deps="chromaprint"
3128 h264_videotoolbox_encoder_deps="pthreads"
3129 h264_videotoolbox_encoder_select="videotoolbox_encoder"
3130 hevc_videotoolbox_encoder_deps="pthreads"
3131 hevc_videotoolbox_encoder_select="videotoolbox_encoder"
3132 libaom_av1_decoder_deps="libaom"
3133 libaom_av1_encoder_deps="libaom"
3134 libaom_av1_encoder_select="extract_extradata_bsf"
3135 libaribb24_decoder_deps="libaribb24"
3136 libcelt_decoder_deps="libcelt"
3137 libcodec2_decoder_deps="libcodec2"
3138 libcodec2_encoder_deps="libcodec2"
3139 libdav1d_decoder_deps="libdav1d"
3140 libdavs2_decoder_deps="libdavs2"
3141 libfdk_aac_decoder_deps="libfdk_aac"
3142 libfdk_aac_encoder_deps="libfdk_aac"
3143 libfdk_aac_encoder_select="audio_frame_queue"
3144 libgme_demuxer_deps="libgme"
3145 libgsm_decoder_deps="libgsm"
3146 libgsm_encoder_deps="libgsm"
3147 libgsm_ms_decoder_deps="libgsm"
3148 libgsm_ms_encoder_deps="libgsm"
3149 libilbc_decoder_deps="libilbc"
3150 libilbc_encoder_deps="libilbc"
3151 libkvazaar_encoder_deps="libkvazaar"
3152 libmodplug_demuxer_deps="libmodplug"
3153 libmp3lame_encoder_deps="libmp3lame"
3154 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
3155 libopencore_amrnb_decoder_deps="libopencore_amrnb"
3156 libopencore_amrnb_encoder_deps="libopencore_amrnb"
3157 libopencore_amrnb_encoder_select="audio_frame_queue"
3158 libopencore_amrwb_decoder_deps="libopencore_amrwb"
3159 libopenh264_decoder_deps="libopenh264"
3160 libopenh264_decoder_select="h264_mp4toannexb_bsf"
3161 libopenh264_encoder_deps="libopenh264"
3162 libopenjpeg_decoder_deps="libopenjpeg"
3163 libopenjpeg_encoder_deps="libopenjpeg"
3164 libopenmpt_demuxer_deps="libopenmpt"
3165 libopus_decoder_deps="libopus"
3166 libopus_encoder_deps="libopus"
3167 libopus_encoder_select="audio_frame_queue"
3168 librsvg_decoder_deps="librsvg"
3169 libshine_encoder_deps="libshine"
3170 libshine_encoder_select="audio_frame_queue"
3171 libspeex_decoder_deps="libspeex"
3172 libspeex_encoder_deps="libspeex"
3173 libspeex_encoder_select="audio_frame_queue"
3174 libtheora_encoder_deps="libtheora"
3175 libtwolame_encoder_deps="libtwolame"
3176 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
3177 libvorbis_decoder_deps="libvorbis"
3178 libvorbis_encoder_deps="libvorbis libvorbisenc"
3179 libvorbis_encoder_select="audio_frame_queue"
3180 libvpx_vp8_decoder_deps="libvpx"
3181 libvpx_vp8_encoder_deps="libvpx"
3182 libvpx_vp9_decoder_deps="libvpx"
3183 libvpx_vp9_encoder_deps="libvpx"
3184 libwavpack_encoder_deps="libwavpack"
3185 libwavpack_encoder_select="audio_frame_queue"
3186 libwebp_encoder_deps="libwebp"
3187 libwebp_anim_encoder_deps="libwebp"
3188 libx262_encoder_deps="libx262"
3189 libx264_encoder_deps="libx264"
3190 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
3191 libx264rgb_encoder_select="libx264_encoder"
3192 libx265_encoder_deps="libx265"
3193 libxavs_encoder_deps="libxavs"
3194 libxavs2_encoder_deps="libxavs2"
3195 libxvid_encoder_deps="libxvid"
3196 libzvbi_teletext_decoder_deps="libzvbi"
3197 vapoursynth_demuxer_deps="vapoursynth"
3198 videotoolbox_suggest="coreservices"
3199 videotoolbox_deps="corefoundation coremedia corevideo"
3200 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
3201
3202 # demuxers / muxers
3203 ac3_demuxer_select="ac3_parser"
3204 aiff_muxer_select="iso_media"
3205 asf_demuxer_select="riffdec"
3206 asf_o_demuxer_select="riffdec"
3207 asf_muxer_select="riffenc"
3208 asf_stream_muxer_select="asf_muxer"
3209 avi_demuxer_select="iso_media riffdec exif"
3210 avi_muxer_select="riffenc"
3211 caf_demuxer_select="iso_media riffdec"
3212 caf_muxer_select="iso_media"
3213 dash_muxer_select="mp4_muxer"
3214 dash_demuxer_deps="libxml2"
3215 dirac_demuxer_select="dirac_parser"
3216 dts_demuxer_select="dca_parser"
3217 dtshd_demuxer_select="dca_parser"
3218 dv_demuxer_select="dvprofile"
3219 dv_muxer_select="dvprofile"
3220 dxa_demuxer_select="riffdec"
3221 eac3_demuxer_select="ac3_parser"
3222 f4v_muxer_select="mov_muxer"
3223 fifo_muxer_deps="threads"
3224 flac_demuxer_select="flac_parser"
3225 hds_muxer_select="flv_muxer"
3226 hls_muxer_select="mpegts_muxer"
3227 hls_muxer_suggest="gcrypt openssl"
3228 image2_alias_pix_demuxer_select="image2_demuxer"
3229 image2_brender_pix_demuxer_select="image2_demuxer"
3230 ipod_muxer_select="mov_muxer"
3231 ismv_muxer_select="mov_muxer"
3232 ivf_muxer_select="av1_metadata_bsf vp9_superframe_bsf"
3233 matroska_audio_muxer_select="matroska_muxer"
3234 matroska_demuxer_select="iso_media riffdec"
3235 matroska_demuxer_suggest="bzlib lzo zlib"
3236 matroska_muxer_select="iso_media riffenc"
3237 mmf_muxer_select="riffenc"
3238 mov_demuxer_select="iso_media riffdec"
3239 mov_demuxer_suggest="zlib"
3240 mov_muxer_select="iso_media riffenc rtpenc_chain"
3241 mp3_demuxer_select="mpegaudio_parser"
3242 mp3_muxer_select="mpegaudioheader"
3243 mp4_muxer_select="mov_muxer"
3244 mpegts_demuxer_select="iso_media"
3245 mpegts_muxer_select="adts_muxer latm_muxer"
3246 mpegtsraw_demuxer_select="mpegts_demuxer"
3247 mxf_d10_muxer_select="mxf_muxer"
3248 mxf_opatom_muxer_select="mxf_muxer"
3249 nut_muxer_select="riffenc"
3250 nuv_demuxer_select="riffdec"
3251 oga_muxer_select="ogg_muxer"
3252 ogg_demuxer_select="dirac_parse"
3253 ogv_muxer_select="ogg_muxer"
3254 opus_muxer_select="ogg_muxer"
3255 psp_muxer_select="mov_muxer"
3256 rtp_demuxer_select="sdp_demuxer"
3257 rtp_muxer_select="golomb"
3258 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3259 rtsp_demuxer_select="http_protocol rtpdec"
3260 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3261 sap_demuxer_select="sdp_demuxer"
3262 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3263 sdp_demuxer_select="rtpdec"
3264 smoothstreaming_muxer_select="ismv_muxer"
3265 spdif_demuxer_select="adts_header"
3266 spdif_muxer_select="adts_header"
3267 spx_muxer_select="ogg_muxer"
3268 swf_demuxer_suggest="zlib"
3269 tak_demuxer_select="tak_parser"
3270 tg2_muxer_select="mov_muxer"
3271 tgp_muxer_select="mov_muxer"
3272 vobsub_demuxer_select="mpegps_demuxer"
3273 w64_demuxer_select="wav_demuxer"
3274 w64_muxer_select="wav_muxer"
3275 wav_demuxer_select="riffdec"
3276 wav_muxer_select="riffenc"
3277 webm_muxer_select="iso_media riffenc"
3278 webm_dash_manifest_demuxer_select="matroska_demuxer"
3279 wtv_demuxer_select="mpegts_demuxer riffdec"
3280 wtv_muxer_select="mpegts_muxer riffenc"
3281 xmv_demuxer_select="riffdec"
3282 xwma_demuxer_select="riffdec"
3283
3284 # indevs / outdevs
3285 android_camera_indev_deps="android camera2ndk mediandk pthreads"
3286 android_camera_indev_extralibs="-landroid -lcamera2ndk -lmediandk"
3287 alsa_indev_deps="alsa"
3288 alsa_outdev_deps="alsa"
3289 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3290 avfoundation_indev_suggest="coregraphics applicationservices"
3291 avfoundation_indev_extralibs="-framework Foundation"
3292 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3293 caca_outdev_deps="libcaca"
3294 decklink_deps_any="libdl LoadLibrary"
3295 decklink_indev_deps="decklink threads"
3296 decklink_indev_extralibs="-lstdc++"
3297 decklink_outdev_deps="decklink threads"
3298 decklink_outdev_suggest="libklvanc"
3299 decklink_outdev_extralibs="-lstdc++"
3300 libndi_newtek_indev_deps="libndi_newtek"
3301 libndi_newtek_indev_extralibs="-lndi"
3302 libndi_newtek_outdev_deps="libndi_newtek"
3303 libndi_newtek_outdev_extralibs="-lndi"
3304 dshow_indev_deps="IBaseFilter"
3305 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3306 fbdev_indev_deps="linux_fb_h"
3307 fbdev_outdev_deps="linux_fb_h"
3308 gdigrab_indev_deps="CreateDIBSection"
3309 gdigrab_indev_extralibs="-lgdi32"
3310 gdigrab_indev_select="bmp_decoder"
3311 iec61883_indev_deps="libiec61883"
3312 jack_indev_deps="libjack"
3313 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3314 kmsgrab_indev_deps="libdrm"
3315 lavfi_indev_deps="avfilter"
3316 libcdio_indev_deps="libcdio"
3317 libdc1394_indev_deps="libdc1394"
3318 openal_indev_deps="openal"
3319 opengl_outdev_deps="opengl"
3320 opengl_outdev_suggest="sdl2"
3321 oss_indev_deps_any="sys_soundcard_h"
3322 oss_outdev_deps_any="sys_soundcard_h"
3323 pulse_indev_deps="libpulse"
3324 pulse_outdev_deps="libpulse"
3325 sdl2_outdev_deps="sdl2"
3326 sndio_indev_deps="sndio"
3327 sndio_outdev_deps="sndio"
3328 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3329 v4l2_indev_suggest="libv4l2"
3330 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3331 v4l2_outdev_suggest="libv4l2"
3332 vfwcap_indev_deps="vfw32 vfwcap_defines"
3333 xcbgrab_indev_deps="libxcb"
3334 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3335 xv_outdev_deps="xlib"
3336
3337 # protocols
3338 async_protocol_deps="threads"
3339 bluray_protocol_deps="libbluray"
3340 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3341 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl mbedtls"
3342 ffrtmpcrypt_protocol_select="tcp_protocol"
3343 ffrtmphttp_protocol_conflict="librtmp_protocol"
3344 ffrtmphttp_protocol_select="http_protocol"
3345 ftp_protocol_select="tcp_protocol"
3346 gopher_protocol_select="network"
3347 http_protocol_select="tcp_protocol"
3348 http_protocol_suggest="zlib"
3349 httpproxy_protocol_select="tcp_protocol"
3350 httpproxy_protocol_suggest="zlib"
3351 https_protocol_select="tls_protocol"
3352 https_protocol_suggest="zlib"
3353 icecast_protocol_select="http_protocol"
3354 mmsh_protocol_select="http_protocol"
3355 mmst_protocol_select="network"
3356 rtmp_protocol_conflict="librtmp_protocol"
3357 rtmp_protocol_select="tcp_protocol"
3358 rtmp_protocol_suggest="zlib"
3359 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3360 rtmpe_protocol_suggest="zlib"
3361 rtmps_protocol_conflict="librtmp_protocol"
3362 rtmps_protocol_select="tls_protocol"
3363 rtmps_protocol_suggest="zlib"
3364 rtmpt_protocol_select="ffrtmphttp_protocol"
3365 rtmpt_protocol_suggest="zlib"
3366 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3367 rtmpte_protocol_suggest="zlib"
3368 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3369 rtmpts_protocol_suggest="zlib"
3370 rtp_protocol_select="udp_protocol"
3371 schannel_conflict="openssl gnutls libtls mbedtls"
3372 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3373 sctp_protocol_select="network"
3374 securetransport_conflict="openssl gnutls libtls mbedtls"
3375 srtp_protocol_select="rtp_protocol srtp"
3376 tcp_protocol_select="network"
3377 tls_protocol_deps_any="gnutls openssl schannel securetransport libtls mbedtls"
3378 tls_protocol_select="tcp_protocol"
3379 udp_protocol_select="network"
3380 udplite_protocol_select="network"
3381 unix_protocol_deps="sys_un_h"
3382 unix_protocol_select="network"
3383
3384 # external library protocols
3385 librtmp_protocol_deps="librtmp"
3386 librtmpe_protocol_deps="librtmp"
3387 librtmps_protocol_deps="librtmp"
3388 librtmpt_protocol_deps="librtmp"
3389 librtmpte_protocol_deps="librtmp"
3390 libsmbclient_protocol_deps="libsmbclient gplv3"
3391 libsrt_protocol_deps="libsrt"
3392 libsrt_protocol_select="network"
3393 libssh_protocol_deps="libssh"
3394 libtls_conflict="openssl gnutls mbedtls"
3395
3396 # filters
3397 afftdn_filter_deps="avcodec"
3398 afftdn_filter_select="fft"
3399 afftfilt_filter_deps="avcodec"
3400 afftfilt_filter_select="fft"
3401 afir_filter_deps="avcodec"
3402 afir_filter_select="fft"
3403 amovie_filter_deps="avcodec avformat"
3404 aresample_filter_deps="swresample"
3405 ass_filter_deps="libass"
3406 atempo_filter_deps="avcodec"
3407 atempo_filter_select="rdft"
3408 avgblur_opencl_filter_deps="opencl"
3409 azmq_filter_deps="libzmq"
3410 blackframe_filter_deps="gpl"
3411 bm3d_filter_deps="avcodec"
3412 bm3d_filter_select="dct"
3413 boxblur_filter_deps="gpl"
3414 boxblur_opencl_filter_deps="opencl gpl"
3415 bs2b_filter_deps="libbs2b"
3416 colormatrix_filter_deps="gpl"
3417 convolution_opencl_filter_deps="opencl"
3418 convolve_filter_deps="avcodec"
3419 convolve_filter_select="fft"
3420 coreimage_filter_deps="coreimage appkit"
3421 coreimage_filter_extralibs="-framework OpenGL"
3422 coreimagesrc_filter_deps="coreimage appkit"
3423 coreimagesrc_filter_extralibs="-framework OpenGL"
3424 cover_rect_filter_deps="avcodec avformat gpl"
3425 cropdetect_filter_deps="gpl"
3426 deconvolve_filter_deps="avcodec"
3427 deconvolve_filter_select="fft"
3428 deinterlace_qsv_filter_deps="libmfx"
3429 deinterlace_vaapi_filter_deps="vaapi"
3430 delogo_filter_deps="gpl"
3431 denoise_vaapi_filter_deps="vaapi"
3432 deshake_filter_select="pixelutils"
3433 dilation_opencl_filter_deps="opencl"
3434 drawtext_filter_deps="libfreetype"
3435 drawtext_filter_suggest="libfontconfig libfribidi"
3436 elbg_filter_deps="avcodec"
3437 eq_filter_deps="gpl"
3438 erosion_opencl_filter_deps="opencl"
3439 fftfilt_filter_deps="avcodec"
3440 fftfilt_filter_select="rdft"
3441 fftdnoiz_filter_deps="avcodec"
3442 fftdnoiz_filter_select="fft"
3443 find_rect_filter_deps="avcodec avformat gpl"
3444 firequalizer_filter_deps="avcodec"
3445 firequalizer_filter_select="rdft"
3446 flite_filter_deps="libflite"
3447 framerate_filter_select="scene_sad"
3448 freezedetect_filter_select="scene_sad"
3449 frei0r_filter_deps="frei0r libdl"
3450 frei0r_src_filter_deps="frei0r libdl"
3451 fspp_filter_deps="gpl"
3452 geq_filter_deps="gpl"
3453 histeq_filter_deps="gpl"
3454 hqdn3d_filter_deps="gpl"
3455 interlace_filter_deps="gpl"
3456 kerndeint_filter_deps="gpl"
3457 ladspa_filter_deps="ladspa libdl"
3458 lensfun_filter_deps="liblensfun version3"
3459 lv2_filter_deps="lv2"
3460 mcdeint_filter_deps="avcodec gpl"
3461 movie_filter_deps="avcodec avformat"
3462 mpdecimate_filter_deps="gpl"
3463 mpdecimate_filter_select="pixelutils"
3464 minterpolate_filter_select="scene_sad"
3465 mptestsrc_filter_deps="gpl"
3466 negate_filter_deps="lut_filter"
3467 nnedi_filter_deps="gpl"
3468 ocr_filter_deps="libtesseract"
3469 ocv_filter_deps="libopencv"
3470 openclsrc_filter_deps="opencl"
3471 overlay_opencl_filter_deps="opencl"
3472 overlay_qsv_filter_deps="libmfx"
3473 overlay_qsv_filter_select="qsvvpp"
3474 owdenoise_filter_deps="gpl"
3475 pan_filter_deps="swresample"
3476 perspective_filter_deps="gpl"
3477 phase_filter_deps="gpl"
3478 pp7_filter_deps="gpl"
3479 pp_filter_deps="gpl postproc"
3480 prewitt_opencl_filter_deps="opencl"
3481 procamp_vaapi_filter_deps="vaapi"
3482 program_opencl_filter_deps="opencl"
3483 pullup_filter_deps="gpl"
3484 removelogo_filter_deps="avcodec avformat swscale"
3485 repeatfields_filter_deps="gpl"
3486 resample_filter_deps="avresample"
3487 roberts_opencl_filter_deps="opencl"
3488 rubberband_filter_deps="librubberband"
3489 sab_filter_deps="gpl swscale"
3490 scale2ref_filter_deps="swscale"
3491 scale_filter_deps="swscale"
3492 scale_qsv_filter_deps="libmfx"
3493 select_filter_select="scene_sad"
3494 sharpness_vaapi_filter_deps="vaapi"
3495 showcqt_filter_deps="avcodec avformat swscale"
3496 showcqt_filter_suggest="libfontconfig libfreetype"
3497 showcqt_filter_select="fft"
3498 showfreqs_filter_deps="avcodec"
3499 showfreqs_filter_select="fft"
3500 showspectrum_filter_deps="avcodec"
3501 showspectrum_filter_select="fft"
3502 showspectrumpic_filter_deps="avcodec"
3503 showspectrumpic_filter_select="fft"
3504 signature_filter_deps="gpl avcodec avformat"
3505 smartblur_filter_deps="gpl swscale"
3506 sobel_opencl_filter_deps="opencl"
3507 sofalizer_filter_deps="libmysofa avcodec"
3508 sofalizer_filter_select="fft"
3509 spectrumsynth_filter_deps="avcodec"
3510 spectrumsynth_filter_select="fft"
3511 spp_filter_deps="gpl avcodec"
3512 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3513 sr_filter_deps="avformat swscale"
3514 sr_filter_select="dnn"
3515 stereo3d_filter_deps="gpl"
3516 subtitles_filter_deps="avformat avcodec libass"
3517 super2xsai_filter_deps="gpl"
3518 pixfmts_super2xsai_test_deps="super2xsai_filter"
3519 tinterlace_filter_deps="gpl"
3520 tinterlace_merge_test_deps="tinterlace_filter"
3521 tinterlace_pad_test_deps="tinterlace_filter"
3522 tonemap_filter_deps="const_nan"
3523 tonemap_opencl_filter_deps="opencl const_nan"
3524 transpose_opencl_filter_deps="opencl"
3525 transpose_vaapi_filter_deps="vaapi VAProcPipelineCaps_rotation_flags"
3526 unsharp_opencl_filter_deps="opencl"
3527 uspp_filter_deps="gpl avcodec"
3528 vaguedenoiser_filter_deps="gpl"
3529 vidstabdetect_filter_deps="libvidstab"
3530 vidstabtransform_filter_deps="libvidstab"
3531 libvmaf_filter_deps="libvmaf pthreads"
3532 zmq_filter_deps="libzmq"
3533 zoompan_filter_deps="swscale"
3534 zscale_filter_deps="libzimg const_nan"
3535 scale_vaapi_filter_deps="vaapi"
3536 vpp_qsv_filter_deps="libmfx"
3537 vpp_qsv_filter_select="qsvvpp"
3538 yadif_cuda_filter_deps="ffnvcodec cuda_nvcc"
3539
3540 # examples
3541 avio_dir_cmd_deps="avformat avutil"
3542 avio_reading_deps="avformat avcodec avutil"
3543 decode_audio_example_deps="avcodec avutil"
3544 decode_video_example_deps="avcodec avutil"
3545 demuxing_decoding_example_deps="avcodec avformat avutil"
3546 encode_audio_example_deps="avcodec avutil"
3547 encode_video_example_deps="avcodec avutil"
3548 extract_mvs_example_deps="avcodec avformat avutil"
3549 filter_audio_example_deps="avfilter avutil"
3550 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3551 filtering_video_example_deps="avfilter avcodec avformat avutil"
3552 http_multiclient_example_deps="avformat avutil fork"
3553 hw_decode_example_deps="avcodec avformat avutil"
3554 metadata_example_deps="avformat avutil"
3555 muxing_example_deps="avcodec avformat avutil swscale"
3556 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3557 remuxing_example_deps="avcodec avformat avutil"
3558 resampling_audio_example_deps="avutil swresample"
3559 scaling_video_example_deps="avutil swscale"
3560 transcode_aac_example_deps="avcodec avformat swresample"
3561 transcoding_example_deps="avfilter avcodec avformat avutil"
3562 vaapi_encode_example_deps="avcodec avutil h264_vaapi_encoder"
3563 vaapi_transcode_example_deps="avcodec avformat avutil h264_vaapi_encoder"
3564
3565 # EXTRALIBS_LIST
3566 cpu_init_extralibs="pthreads_extralibs"
3567 cws2fws_extralibs="zlib_extralibs"
3568
3569 # libraries, in any order
3570 avcodec_deps="avutil"
3571 avcodec_suggest="libm"
3572 avcodec_select="null_bsf"
3573 avdevice_deps="avformat avcodec avutil"
3574 avdevice_suggest="libm"
3575 avfilter_deps="avutil"
3576 avfilter_suggest="libm"
3577 avformat_deps="avcodec avutil"
3578 avformat_suggest="libm network zlib"
3579 avresample_deps="avutil"
3580 avresample_suggest="libm"
3581 avutil_suggest="clock_gettime ffnvcodec libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia bcrypt"
3582 postproc_deps="avutil gpl"
3583 postproc_suggest="libm"
3584 swresample_deps="avutil"
3585 swresample_suggest="libm libsoxr"
3586 swscale_deps="avutil"
3587 swscale_suggest="libm"
3588
3589 avcodec_extralibs="pthreads_extralibs iconv_extralibs dxva2_extralibs"
3590 avfilter_extralibs="pthreads_extralibs"
3591 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3592
3593 # programs
3594 ffmpeg_deps="avcodec avfilter avformat"
3595 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3596                null_filter
3597                trim_filter"
3598 ffmpeg_suggest="ole32 psapi shell32"
3599 ffplay_deps="avcodec avformat swscale swresample sdl2"
3600 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3601 ffplay_suggest="shell32"
3602 ffprobe_deps="avcodec avformat"
3603 ffprobe_suggest="shell32"
3604
3605 # documentation
3606 podpages_deps="perl"
3607 manpages_deps="perl pod2man"
3608 htmlpages_deps="perl"
3609 htmlpages_deps_any="makeinfo_html texi2html"
3610 txtpages_deps="perl makeinfo"
3611 doc_deps_any="manpages htmlpages podpages txtpages"
3612
3613 # default parameters
3614
3615 logfile="ffbuild/config.log"
3616
3617 # installation paths
3618 prefix_default="/usr/local"
3619 bindir_default='${prefix}/bin'
3620 datadir_default='${prefix}/share/ffmpeg'
3621 docdir_default='${prefix}/share/doc/ffmpeg'
3622 incdir_default='${prefix}/include'
3623 libdir_default='${prefix}/lib'
3624 mandir_default='${prefix}/share/man'
3625
3626 # toolchain
3627 ar_default="ar"
3628 cc_default="gcc"
3629 cxx_default="g++"
3630 host_cc_default="gcc"
3631 doxygen_default="doxygen"
3632 install="install"
3633 ln_s_default="ln -s -f"
3634 nm_default="nm -g"
3635 pkg_config_default=pkg-config
3636 ranlib_default="ranlib"
3637 strip_default="strip"
3638 version_script='--version-script'
3639 objformat="elf32"
3640 x86asmexe_default="nasm"
3641 windres_default="windres"
3642 nvcc_default="nvcc"
3643 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3644 striptype="direct"
3645
3646 # OS
3647 target_os_default=$(tolower $(uname -s))
3648 host_os=$target_os_default
3649
3650 # machine
3651 if test "$target_os_default" = aix; then
3652     arch_default=$(uname -p)
3653     strip_default="strip -X32_64"
3654     nm_default="nm -g -X32_64"
3655 else
3656     arch_default=$(uname -m)
3657 fi
3658 cpu="generic"
3659 intrinsics="none"
3660
3661 # configurable options
3662 enable $PROGRAM_LIST
3663 enable $DOCUMENT_LIST
3664 enable $EXAMPLE_LIST
3665 enable $(filter_out avresample $LIBRARY_LIST)
3666 enable stripping
3667
3668 enable asm
3669 enable debug
3670 enable doc
3671 enable faan faandct faanidct
3672 enable optimizations
3673 enable runtime_cpudetect
3674 enable safe_bitstream_reader
3675 enable static
3676 enable swscale_alpha
3677 enable valgrind_backtrace
3678
3679 sws_max_filter_size_default=256
3680 set_default sws_max_filter_size
3681
3682 # internal components are enabled by default
3683 enable $EXTRALIBS_LIST
3684
3685 # Avoid external, non-system, libraries getting enabled by dependency resolution
3686 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3687
3688 # build settings
3689 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3690 LIBPREF="lib"
3691 LIBSUF=".a"
3692 FULLNAME='$(NAME)$(BUILDSUF)'
3693 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3694 SLIBPREF="lib"
3695 SLIBSUF=".so"
3696 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3697 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3698 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3699 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3700 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3701 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3702 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3703
3704 asflags_filter=echo
3705 cflags_filter=echo
3706 ldflags_filter=echo
3707
3708 AS_C='-c'
3709 AS_O='-o $@'
3710 CC_C='-c'
3711 CC_E='-E -o $@'
3712 CC_O='-o $@'
3713 CXX_C='-c'
3714 CXX_O='-o $@'
3715 OBJCC_C='-c'
3716 OBJCC_E='-E -o $@'
3717 OBJCC_O='-o $@'
3718 X86ASM_O='-o $@'
3719 LD_O='-o $@'
3720 LD_LIB='-l%'
3721 LD_PATH='-L'
3722 HOSTCC_C='-c'
3723 HOSTCC_E='-E -o $@'
3724 HOSTCC_O='-o $@'
3725 HOSTLD_O='-o $@'
3726 NVCC_C='-c'
3727 NVCC_O='-o $@'
3728
3729 host_extralibs='-lm'
3730 host_cflags_filter=echo
3731 host_ldflags_filter=echo
3732
3733 target_path='$(CURDIR)'
3734
3735 # since the object filename is not given with the -MM flag, the compiler
3736 # is only able to print the basename, and we must add the path ourselves
3737 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3738 DEPFLAGS='-MM'
3739
3740 mkdir -p ffbuild
3741
3742 # find source path
3743 if test -f configure; then
3744     source_path=.
3745 else
3746     source_path=$(cd $(dirname "$0"); pwd)
3747     case "$source_path" in
3748         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3749     esac
3750     test -e "$source_path/config.h" &&
3751         die "Out of tree builds are impossible with config.h in source dir."
3752 fi
3753
3754 for v in "$@"; do
3755     r=${v#*=}
3756     l=${v%"$r"}
3757     r=$(sh_quote "$r")
3758     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3759 done
3760
3761 find_things_extern(){
3762     thing=$1
3763     pattern=$2
3764     file=$source_path/$3
3765     out=${4:-$thing}
3766     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$out/p" "$file"
3767 }
3768
3769 find_filters_extern(){
3770     file=$source_path/$1
3771     sed -n 's/^extern AVFilter ff_[avfsinkrc]\{2,5\}_\([[:alnum:]_]\{1,\}\);/\1_filter/p' $file
3772 }
3773
3774 FILTER_LIST=$(find_filters_extern libavfilter/allfilters.c)
3775 OUTDEV_LIST=$(find_things_extern muxer AVOutputFormat libavdevice/alldevices.c outdev)
3776 INDEV_LIST=$(find_things_extern demuxer AVInputFormat libavdevice/alldevices.c indev)
3777 MUXER_LIST=$(find_things_extern muxer AVOutputFormat libavformat/allformats.c)
3778 DEMUXER_LIST=$(find_things_extern demuxer AVInputFormat libavformat/allformats.c)
3779 ENCODER_LIST=$(find_things_extern encoder AVCodec libavcodec/allcodecs.c)
3780 DECODER_LIST=$(find_things_extern decoder AVCodec libavcodec/allcodecs.c)
3781 CODEC_LIST="
3782     $ENCODER_LIST
3783     $DECODER_LIST
3784 "
3785 PARSER_LIST=$(find_things_extern parser AVCodecParser libavcodec/parsers.c)
3786 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3787 HWACCEL_LIST=$(find_things_extern hwaccel AVHWAccel libavcodec/hwaccels.h)
3788 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3789
3790 AVCODEC_COMPONENTS_LIST="
3791     $BSF_LIST
3792     $DECODER_LIST
3793     $ENCODER_LIST
3794     $HWACCEL_LIST
3795     $PARSER_LIST
3796 "
3797
3798 AVDEVICE_COMPONENTS_LIST="
3799     $INDEV_LIST
3800     $OUTDEV_LIST
3801 "
3802
3803 AVFILTER_COMPONENTS_LIST="
3804     $FILTER_LIST
3805 "
3806
3807 AVFORMAT_COMPONENTS_LIST="
3808     $DEMUXER_LIST
3809     $MUXER_LIST
3810     $PROTOCOL_LIST
3811 "
3812
3813 ALL_COMPONENTS="
3814     $AVCODEC_COMPONENTS_LIST
3815     $AVDEVICE_COMPONENTS_LIST
3816     $AVFILTER_COMPONENTS_LIST
3817     $AVFORMAT_COMPONENTS_LIST
3818 "
3819
3820 for n in $COMPONENT_LIST; do
3821     v=$(toupper ${n%s})_LIST
3822     eval enable \$$v
3823     eval ${n}_if_any="\$$v"
3824 done
3825
3826 enable $ARCH_EXT_LIST
3827
3828 die_unknown(){
3829     echo "Unknown option \"$1\"."
3830     echo "See $0 --help for available options."
3831     exit 1
3832 }
3833
3834 print_in_columns() {
3835     cols=$(expr $ncols / 24)
3836     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3837 }
3838
3839 show_list() {
3840     suffix=_$1
3841     shift
3842     echo $* | sed s/$suffix//g | print_in_columns
3843     exit 0
3844 }
3845
3846 rand_list(){
3847     IFS=', '
3848     set -- $*
3849     unset IFS
3850     for thing; do
3851         comp=${thing%:*}
3852         prob=${thing#$comp}
3853         prob=${prob#:}
3854         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3855         echo "prob ${prob:-0.5}"
3856         printf '%s\n' $comp
3857     done
3858 }
3859
3860 do_random(){
3861     action=$1
3862     shift
3863     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3864     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3865 }
3866
3867 for opt do
3868     optval="${opt#*=}"
3869     case "$opt" in
3870         --extra-ldflags=*)
3871             add_ldflags $optval
3872         ;;
3873         --extra-ldexeflags=*)
3874             add_ldexeflags $optval
3875         ;;
3876         --extra-ldsoflags=*)
3877             add_ldsoflags $optval
3878         ;;
3879         --extra-ldlibflags=*)
3880             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3881                  "removed in the future. Use --extra-ldsoflags instead."
3882             add_ldsoflags $optval
3883         ;;
3884         --extra-libs=*)
3885             add_extralibs $optval
3886         ;;
3887         --disable-devices)
3888             disable $INDEV_LIST $OUTDEV_LIST
3889         ;;
3890         --enable-debug=*)
3891             debuglevel="$optval"
3892         ;;
3893         --disable-programs)
3894             disable $PROGRAM_LIST
3895         ;;
3896         --disable-everything)
3897             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3898         ;;
3899         --disable-all)
3900             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3901             disable $LIBRARY_LIST $PROGRAM_LIST doc
3902             enable avutil
3903         ;;
3904         --enable-random|--disable-random)
3905             action=${opt%%-random}
3906             do_random ${action#--} $COMPONENT_LIST
3907         ;;
3908         --enable-random=*|--disable-random=*)
3909             action=${opt%%-random=*}
3910             do_random ${action#--} $optval
3911         ;;
3912         --enable-sdl)
3913             enable sdl2
3914         ;;
3915         --enable-*=*|--disable-*=*)
3916             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3917             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3918             eval list=\$$(toupper $thing)_LIST
3919             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3920             list=$(filter "$name" $list)
3921             [ "$list" = "" ] && warn "Option $opt did not match anything"
3922             test $action = enable && warn_if_gets_disabled $list
3923             $action $list
3924         ;;
3925         --enable-yasm|--disable-yasm)
3926             warn "The ${opt} option is only provided for compatibility and will be\n"\
3927                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3928             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3929         ;;
3930         --yasmexe=*)
3931             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3932                  "removed in the future. Use --x86asmexe instead."
3933             x86asmexe="$optval"
3934         ;;
3935         --enable-?*|--disable-?*)
3936             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3937             if is_in $option $COMPONENT_LIST; then
3938                 test $action = disable && action=unset
3939                 eval $action \$$(toupper ${option%s})_LIST
3940             elif is_in $option $CMDLINE_SELECT; then
3941                 $action $option
3942             else
3943                 die_unknown $opt
3944             fi
3945         ;;
3946         --list-*)
3947             NAME="${opt#--list-}"
3948             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3949             NAME=${NAME%s}
3950             eval show_list $NAME \$$(toupper $NAME)_LIST
3951         ;;
3952         --help|-h) show_help
3953         ;;
3954         --quiet|-q) quiet=yes
3955         ;;
3956         --fatal-warnings) enable fatal_warnings
3957         ;;
3958         --libfuzzer=*)
3959             libfuzzer_path="$optval"
3960         ;;
3961         *)
3962             optname="${opt%%=*}"
3963             optname="${optname#--}"
3964             optname=$(echo "$optname" | sed 's/-/_/g')
3965             if is_in $optname $CMDLINE_SET; then
3966                 eval $optname='$optval'
3967             elif is_in $optname $CMDLINE_APPEND; then
3968                 append $optname "$optval"
3969             else
3970                 die_unknown $opt
3971             fi
3972         ;;
3973     esac
3974 done
3975
3976 for e in $env; do
3977     eval "export $e"
3978 done
3979
3980 if disabled autodetect; then
3981
3982     # Unless iconv is explicitely disabled by the user, we still want to probe
3983     # for the iconv from the libc.
3984     disabled iconv || enable libc_iconv
3985
3986     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3987     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3988 fi
3989 # Mark specifically enabled, but normally autodetected libraries as requested.
3990 for lib in $AUTODETECT_LIBS; do
3991     enabled $lib && request $lib
3992 done
3993 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
3994 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3995 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3996
3997 disabled logging && logfile=/dev/null
3998
3999 # command line configuration sanity checks
4000
4001 # we need to build at least one lib type
4002 if ! enabled_any static shared; then
4003     cat <<EOF
4004 At least one library type must be built.
4005 Specify --enable-static to build the static libraries or --enable-shared to
4006 build the shared libraries as well. To only build the shared libraries specify
4007 --disable-static in addition to --enable-shared.
4008 EOF
4009     exit 1
4010 fi
4011
4012 die_license_disabled() {
4013     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
4014 }
4015
4016 die_license_disabled_gpl() {
4017     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
4018 }
4019
4020 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
4021 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
4022
4023 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
4024 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
4025
4026 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4027
4028 if enabled nonfree; then
4029     license="nonfree and unredistributable"
4030 elif enabled gplv3; then
4031     license="GPL version 3 or later"
4032 elif enabled lgplv3; then
4033     license="LGPL version 3 or later"
4034 elif enabled gpl; then
4035     license="GPL version 2 or later"
4036 else
4037     license="LGPL version 2.1 or later"
4038 fi
4039
4040 enabled_all gnutls openssl &&
4041     die "GnuTLS and OpenSSL must not be enabled at the same time."
4042
4043 enabled_all gnutls mbedtls &&
4044     die "GnuTLS and mbedTLS must not be enabled at the same time."
4045
4046 enabled_all openssl mbedtls &&
4047     die "OpenSSL and mbedTLS must not be enabled at the same time."
4048
4049 # Disable all the library-specific components if the library itself
4050 # is disabled, see AVCODEC_LIST and following _LIST variables.
4051
4052 disable_components(){
4053     disabled ${1} && disable $(
4054         eval components="\$$(toupper ${1})_COMPONENTS"
4055         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
4056     )
4057 }
4058
4059 map 'disable_components $v' $LIBRARY_LIST
4060
4061 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
4062 set >> $logfile
4063
4064 test -n "$valgrind" && toolchain="valgrind-memcheck"
4065
4066 enabled ossfuzz && ! echo $CFLAGS | grep -q -- "-fsanitize="  && ! echo $CFLAGS | grep -q -- "-fcoverage-mapping" &&{
4067     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
4068     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
4069 }
4070
4071 case "$toolchain" in
4072     *-asan)
4073         cc_default="${toolchain%-asan}"
4074         add_cflags  -fsanitize=address
4075         add_ldflags -fsanitize=address
4076     ;;
4077     *-msan)
4078         cc_default="${toolchain%-msan}"
4079         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
4080         add_ldflags -fsanitize=memory
4081     ;;
4082     *-tsan)
4083         cc_default="${toolchain%-tsan}"
4084         add_cflags  -fsanitize=thread
4085         add_ldflags -fsanitize=thread
4086         case "$toolchain" in
4087             gcc-tsan)
4088                 add_cflags  -fPIC
4089                 add_ldflags -fPIC
4090                 ;;
4091         esac
4092     ;;
4093     *-usan)
4094         cc_default="${toolchain%-usan}"
4095         add_cflags  -fsanitize=undefined
4096         add_ldflags -fsanitize=undefined
4097     ;;
4098     valgrind-*)
4099         target_exec_default="valgrind"
4100         case "$toolchain" in
4101             valgrind-massif)
4102                 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"
4103                 ;;
4104             valgrind-memcheck)
4105                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
4106                 ;;
4107         esac
4108     ;;
4109     msvc)
4110         # Check whether the current MSVC version needs the C99 converter.
4111         # From MSVC 2013 (compiler major version 18) onwards, it does actually
4112         # support enough of C99 to build ffmpeg. Default to the new
4113         # behaviour if the regexp was unable to match anything, since this
4114         # successfully parses the version number of existing supported
4115         # versions that require the converter (MSVC 2010 and 2012).
4116         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
4117         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
4118             cc_default="cl"
4119             cxx_default="cl"
4120         else
4121             die "Unsupported MSVC version (2013 or newer required)"
4122         fi
4123         ld_default="$source_path/compat/windows/mslink"
4124         nm_default="dumpbin -symbols"
4125         ar_default="lib"
4126         case "$arch" in
4127         aarch64|arm64)
4128             as_default="armasm64"
4129             ;;
4130         arm*)
4131             as_default="armasm"
4132             ;;
4133         esac
4134         target_os_default="win32"
4135         # Use a relative path for TMPDIR. This makes sure all the
4136         # ffconf temp files are written with a relative path, avoiding
4137         # issues with msys/win32 path conversion for MSVC parameters
4138         # such as -Fo<file> or -out:<file>.
4139         TMPDIR=.
4140     ;;
4141     icl)
4142         cc_default="icl"
4143         ld_default="xilink"
4144         nm_default="dumpbin -symbols"
4145         ar_default="xilib"
4146         target_os_default="win32"
4147         TMPDIR=.
4148     ;;
4149     gcov)
4150         add_cflags  -fprofile-arcs -ftest-coverage
4151         add_ldflags -fprofile-arcs -ftest-coverage
4152     ;;
4153     llvm-cov)
4154         add_cflags -fprofile-arcs -ftest-coverage
4155         add_ldflags --coverage
4156     ;;
4157     hardened)
4158         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
4159         add_cflags   -fno-strict-overflow -fstack-protector-all
4160         add_ldflags  -Wl,-z,relro -Wl,-z,now
4161         add_cflags   -fPIE
4162         add_ldexeflags -fPIE -pie
4163     ;;
4164     ?*)
4165         die "Unknown toolchain $toolchain"
4166     ;;
4167 esac
4168
4169 if test -n "$cross_prefix"; then
4170     test -n "$arch" && test -n "$target_os" ||
4171         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
4172     enable cross_compile
4173 fi
4174
4175 set_default target_os
4176 if test "$target_os" = android; then
4177     cc_default="clang"
4178 fi
4179
4180 ar_default="${cross_prefix}${ar_default}"
4181 cc_default="${cross_prefix}${cc_default}"
4182 cxx_default="${cross_prefix}${cxx_default}"
4183 nm_default="${cross_prefix}${nm_default}"
4184 pkg_config_default="${cross_prefix}${pkg_config_default}"
4185 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
4186     ranlib_default="${cross_prefix}${ranlib_default} -D"
4187 else
4188     ranlib_default="${cross_prefix}${ranlib_default}"
4189 fi
4190 strip_default="${cross_prefix}${strip_default}"
4191 windres_default="${cross_prefix}${windres_default}"
4192
4193 sysinclude_default="${sysroot}/usr/include"
4194
4195 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
4196     target_exec x86asmexe nvcc
4197 enabled cross_compile || host_cc_default=$cc
4198 set_default host_cc
4199
4200 pkg_config_fail_message=""
4201 if ! $pkg_config --version >/dev/null 2>&1; then
4202     warn "$pkg_config not found, library detection may fail."
4203     pkg_config=false
4204 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
4205     pkg_config_fail_message="
4206 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
4207 fi
4208
4209 if test $doxygen != $doxygen_default && \
4210   ! $doxygen --version >/dev/null 2>&1; then
4211     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
4212 fi
4213
4214 exesuf() {
4215     case $1 in
4216         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
4217     esac
4218 }
4219
4220 EXESUF=$(exesuf $target_os)
4221 HOSTEXESUF=$(exesuf $host_os)
4222
4223 # set temporary file name
4224 : ${TMPDIR:=$TEMPDIR}
4225 : ${TMPDIR:=$TMP}
4226 : ${TMPDIR:=/tmp}
4227
4228 if [ -n "$tempprefix" ] ; then
4229     mktemp(){
4230         tmpname="$tempprefix.${HOSTNAME}.${UID}"
4231         echo "$tmpname"
4232         mkdir "$tmpname"
4233     }
4234 elif ! test_cmd mktemp -u XXXXXX; then
4235     # simple replacement for missing mktemp
4236     # NOT SAFE FOR GENERAL USE
4237     mktemp(){
4238         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
4239         echo "$tmpname"
4240         mkdir "$tmpname"
4241     }
4242 fi
4243
4244 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
4245     die "Unable to create temporary directory in $TMPDIR."
4246
4247 tmpfile(){
4248     tmp="${FFTMPDIR}/test"$2
4249     (set -C; exec > $tmp) 2> /dev/null ||
4250         die "Unable to create temporary file in $FFTMPDIR."
4251     eval $1=$tmp
4252 }
4253
4254 trap 'rm -rf -- "$FFTMPDIR"' EXIT
4255 trap 'exit 2' INT
4256
4257 tmpfile TMPASM .asm
4258 tmpfile TMPC   .c
4259 tmpfile TMPCPP .cpp
4260 tmpfile TMPE   $EXESUF
4261 tmpfile TMPH   .h
4262 tmpfile TMPM   .m
4263 tmpfile TMPCU  .cu
4264 tmpfile TMPO   .o
4265 tmpfile TMPS   .S
4266 tmpfile TMPSH  .sh
4267 tmpfile TMPV   .ver
4268
4269 unset -f mktemp
4270
4271 chmod +x $TMPE
4272
4273 # make sure we can execute files in $TMPDIR
4274 cat > $TMPSH 2>> $logfile <<EOF
4275 #! /bin/sh
4276 EOF
4277 chmod +x $TMPSH >> $logfile 2>&1
4278 if ! $TMPSH >> $logfile 2>&1; then
4279     cat <<EOF
4280 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
4281 variable to another directory and make sure that it is not mounted noexec.
4282 EOF
4283     die "Sanity test failed."
4284 fi
4285
4286 armasm_flags(){
4287     for flag; do
4288         case $flag in
4289             # Filter out MSVC cl.exe options from cflags that shouldn't
4290             # be passed to gas-preprocessor
4291             -M[TD]*)                                            ;;
4292             *)                  echo $flag                      ;;
4293         esac
4294    done
4295 }
4296
4297 cparser_flags(){
4298     for flag; do
4299         case $flag in
4300             -Wno-switch)             echo -Wno-switch-enum ;;
4301             -Wno-format-zero-length) ;;
4302             -Wdisabled-optimization) ;;
4303             -Wno-pointer-sign)       echo -Wno-other ;;
4304             *)                       echo $flag ;;
4305         esac
4306     done
4307 }
4308
4309 msvc_common_flags(){
4310     for flag; do
4311         case $flag in
4312             # In addition to specifying certain flags under the compiler
4313             # specific filters, they must be specified here as well or else the
4314             # generic catch all at the bottom will print the original flag.
4315             -Wall)                ;;
4316             -Wextra)              ;;
4317             -std=c99)             ;;
4318             # Common flags
4319             -fomit-frame-pointer) ;;
4320             -g)                   echo -Z7 ;;
4321             -fno-math-errno)      ;;
4322             -fno-common)          ;;
4323             -fno-signed-zeros)    ;;
4324             -fPIC)                ;;
4325             -mthumb)              ;;
4326             -march=*)             ;;
4327             -lz)                  echo zlib.lib ;;
4328             -lx264)               echo libx264.lib ;;
4329             -lstdc++)             ;;
4330             -l*)                  echo ${flag#-l}.lib ;;
4331             -LARGEADDRESSAWARE)   echo $flag ;;
4332             -L*)                  echo -libpath:${flag#-L} ;;
4333             *)                    echo $flag ;;
4334         esac
4335     done
4336 }
4337
4338 msvc_flags(){
4339     msvc_common_flags "$@"
4340     for flag; do
4341         case $flag in
4342             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4343                                        -wd4554 ;;
4344             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4345                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4346                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4347                                        -wd4307 \
4348                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4349         esac
4350     done
4351 }
4352
4353 icl_flags(){
4354     msvc_common_flags "$@"
4355     for flag; do
4356         case $flag in
4357             # Despite what Intel's documentation says -Wall, which is supported
4358             # on Windows, does enable remarks so disable them here.
4359             -Wall)                echo $flag -Qdiag-disable:remark ;;
4360             -std=c99)             echo -Qstd=c99 ;;
4361             -flto)                echo -ipo ;;
4362         esac
4363     done
4364 }
4365
4366 icc_flags(){
4367     for flag; do
4368         case $flag in
4369             -flto)                echo -ipo ;;
4370             *)                    echo $flag ;;
4371         esac
4372     done
4373 }
4374
4375 suncc_flags(){
4376     for flag; do
4377         case $flag in
4378             -march=*|-mcpu=*)
4379                 case "${flag#*=}" in
4380                     native)                   echo -xtarget=native       ;;
4381                     v9|niagara)               echo -xarch=sparc          ;;
4382                     ultrasparc)               echo -xarch=sparcvis       ;;
4383                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4384                     i586|pentium)             echo -xchip=pentium        ;;
4385                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4386                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4387                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4388                     pentium4*)          echo -xtarget=pentium4           ;;
4389                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4390                     *-sse3)             echo -xarch=sse3                 ;;
4391                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4392                     bonnell)                   echo -xarch=ssse3         ;;
4393                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4394                     westmere)                  echo -xtarget=westmere    ;;
4395                     silvermont)                echo -xarch=sse4_2        ;;
4396                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4397                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4398                                                echo -xarch=avx           ;;
4399                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4400                     btver1)                    echo -xarch=amdsse4a      ;;
4401                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4402                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4403                     k8|opteron|athlon64|athlon-fx)
4404                                                echo -xarch=sse2a         ;;
4405                     athlon*)                   echo -xarch=pentium_proa  ;;
4406                 esac
4407                 ;;
4408             -std=c99)             echo -xc99              ;;
4409             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4410             -fPIC)                echo -KPIC -xcode=pic32 ;;
4411             -W*,*)                echo $flag              ;;
4412             -f*-*|-W*|-mimpure-text)                      ;;
4413             -shared)              echo -G                 ;;
4414             *)                    echo $flag              ;;
4415         esac
4416     done
4417 }
4418
4419 probe_cc(){
4420     pfx=$1
4421     _cc=$2
4422     first=$3
4423
4424     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4425     unset _ld_o _ldflags _ld_lib _ld_path
4426     unset _depflags _DEPCMD _DEPFLAGS
4427     _flags_filter=echo
4428
4429     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4430         true # no-op to avoid reading stdin in following checks
4431     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4432         _type=llvm_gcc
4433         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4434         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4435         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4436         _cflags_speed='-O3'
4437         _cflags_size='-Os'
4438     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4439         _type=gcc
4440         gcc_version=$($_cc --version | head -n1)
4441         gcc_basever=$($_cc -dumpversion)
4442         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4443         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4444         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4445         case $gcc_basever in
4446             2) ;;
4447             2.*) ;;
4448             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4449         esac
4450         if [ "$first" = true ]; then
4451             case $gcc_basever in
4452                 4.2*)
4453                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4454             esac
4455         fi
4456         _cflags_speed='-O3'
4457         _cflags_size='-Os'
4458     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4459         _type=icc
4460         _ident=$($_cc --version | head -n1)
4461         _depflags='-MMD'
4462         _cflags_speed='-O3'
4463         _cflags_size='-Os'
4464         _cflags_noopt='-O1'
4465         _flags_filter=icc_flags
4466     elif $_cc -v 2>&1 | grep -q xlc; then
4467         _type=xlc
4468         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4469         _cflags_speed='-O5'
4470         _cflags_size='-O5 -qcompact'
4471     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4472         test -d "$sysroot" || die "No valid sysroot specified."
4473         _type=armcc
4474         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4475         armcc_conf="$PWD/armcc.conf"
4476         $_cc --arm_linux_configure                 \
4477              --arm_linux_config_file="$armcc_conf" \
4478              --configure_sysroot="$sysroot"        \
4479              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4480              die "Error creating armcc configuration file."
4481         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4482         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4483         as_default="${cross_prefix}gcc"
4484         _depflags='-MMD'
4485         _cflags_speed='-O3'
4486         _cflags_size='-Os'
4487     elif $_cc -v 2>&1 | grep -q clang && ! $_cc -? > /dev/null 2>&1; then
4488         _type=clang
4489         _ident=$($_cc --version 2>/dev/null | head -n1)
4490         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4491         _cflags_speed='-O3'
4492         _cflags_size='-Oz'
4493     elif $_cc -V 2>&1 | grep -q Sun; then
4494         _type=suncc
4495         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4496         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4497         _DEPFLAGS='-xM1 -xc99'
4498         _ldflags='-std=c99'
4499         _cflags_speed='-O5'
4500         _cflags_size='-O5 -xspace'
4501         _flags_filter=suncc_flags
4502     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4503         _type=pathscale
4504         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4505         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4506         _cflags_speed='-O2'
4507         _cflags_size='-Os'
4508         _flags_filter='filter_out -Wdisabled-optimization'
4509     elif $_cc -v 2>&1 | grep -q Open64; then
4510         _type=open64
4511         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4512         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4513         _cflags_speed='-O2'
4514         _cflags_size='-Os'
4515         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4516     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4517         _type=armasm
4518         _ident=$($_cc | head -n1)
4519         # 4509: "This form of conditional instruction is deprecated"
4520         _flags="-nologo -ignore 4509"
4521         _flags_filter=armasm_flags
4522     elif $_cc 2>&1 | grep -q Intel; then
4523         _type=icl
4524         _ident=$($_cc 2>&1 | head -n1)
4525         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4526         # Not only is O3 broken on 13.x+ but it is slower on all previous
4527         # versions (tested) as well.
4528         _cflags_speed="-O2"
4529         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4530         if $_cc 2>&1 | grep -q Linker; then
4531             _ld_o='-out:$@'
4532         else
4533             _ld_o='-Fe$@'
4534         fi
4535         _cc_o='-Fo$@'
4536         _cc_e='-P'
4537         _flags_filter=icl_flags
4538         _ld_lib='lib%.a'
4539         _ld_path='-libpath:'
4540         # -Qdiag-error to make icl error when seeing certain unknown arguments
4541         _flags='-nologo -Qdiag-error:4044,10157'
4542         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4543         # with MSVC which enables it by default.
4544         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4545         disable stripping
4546     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4547         # lld can emulate multiple different linkers; in ms link.exe mode,
4548         # the -? parameter gives the help output which contains an identifyable
4549         # string, while it gives an error in other modes.
4550         _type=lld-link
4551         # The link.exe mode doesn't have a switch for getting the version,
4552         # but we can force it back to gnu mode and get the version from there.
4553         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4554         _ld_o='-out:$@'
4555         _flags_filter=msvc_flags
4556         _ld_lib='lib%.a'
4557         _ld_path='-libpath:'
4558     elif $_cc -nologo- 2>&1 | grep -q Microsoft || { $_cc -v 2>&1 | grep -q clang && $_cc -? > /dev/null 2>&1; }; then
4559         _type=msvc
4560         _ident=$($_cc 2>&1 | head -n1 | tr -d '\r')
4561         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4562         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4563         _cflags_speed="-O2"
4564         _cflags_size="-O1"
4565         _cflags_noopt="-O1"
4566         if $_cc -nologo- 2>&1 | grep -q Linker; then
4567             _ld_o='-out:$@'
4568         else
4569             _ld_o='-Fe$@'
4570         fi
4571         _cc_o='-Fo$@'
4572         _cc_e='-P -Fi$@'
4573         _flags_filter=msvc_flags
4574         _ld_lib='lib%.a'
4575         _ld_path='-libpath:'
4576         _flags='-nologo'
4577         disable stripping
4578     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4579         _type=cparser
4580         _ident=$($_cc --version | head -n1)
4581         _depflags='-MMD'
4582         _cflags_speed='-O4'
4583         _cflags_size='-O2'
4584         _flags_filter=cparser_flags
4585     fi
4586
4587     eval ${pfx}_type=\$_type
4588     eval ${pfx}_ident=\$_ident
4589 }
4590
4591 set_ccvars(){
4592     eval ${1}_C=\${_cc_c-\${${1}_C}}
4593     eval ${1}_E=\${_cc_e-\${${1}_E}}
4594     eval ${1}_O=\${_cc_o-\${${1}_O}}
4595
4596     if [ -n "$_depflags" ]; then
4597         eval ${1}_DEPFLAGS=\$_depflags
4598     else
4599         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4600         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4601         eval DEP${1}FLAGS=\$_flags
4602     fi
4603 }
4604
4605 probe_cc cc "$cc" "true"
4606 cflags_filter=$_flags_filter
4607 cflags_speed=$_cflags_speed
4608 cflags_size=$_cflags_size
4609 cflags_noopt=$_cflags_noopt
4610 add_cflags $_flags $_cflags
4611 cc_ldflags=$_ldflags
4612 set_ccvars CC
4613 set_ccvars CXX
4614
4615 probe_cc hostcc "$host_cc"
4616 host_cflags_filter=$_flags_filter
4617 host_cflags_speed=$_cflags_speed
4618 add_host_cflags  $_flags $_cflags
4619 set_ccvars HOSTCC
4620
4621 test -n "$cc_type" && enable $cc_type ||
4622     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4623
4624 : ${as_default:=$cc}
4625 : ${objcc_default:=$cc}
4626 : ${dep_cc_default:=$cc}
4627 : ${ld_default:=$cc}
4628 : ${host_ld_default:=$host_cc}
4629 set_default ar as objcc dep_cc ld ln_s host_ld windres
4630
4631 probe_cc as "$as"
4632 asflags_filter=$_flags_filter
4633 add_asflags $_flags $_cflags
4634 set_ccvars AS
4635
4636 probe_cc objcc "$objcc"
4637 objcflags_filter=$_flags_filter
4638 add_objcflags $_flags $_cflags
4639 set_ccvars OBJC
4640
4641 probe_cc ld "$ld"
4642 ldflags_filter=$_flags_filter
4643 add_ldflags $_flags $_ldflags
4644 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4645 LD_O=${_ld_o-$LD_O}
4646 LD_LIB=${_ld_lib-$LD_LIB}
4647 LD_PATH=${_ld_path-$LD_PATH}
4648
4649 probe_cc hostld "$host_ld"
4650 host_ldflags_filter=$_flags_filter
4651 add_host_ldflags $_flags $_ldflags
4652 HOSTLD_O=${_ld_o-$HOSTLD_O}
4653
4654 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4655     probe_cc depcc "$dep_cc"
4656     CCDEP=${_DEPCMD:-$DEPCMD}
4657     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4658     DEPCCFLAGS=$_flags
4659 fi
4660
4661 if $ar 2>&1 | grep -q Microsoft; then
4662     arflags="-nologo"
4663     ar_o='-out:$@'
4664 elif $ar 2>&1 | grep -q "\[D\] "; then
4665     arflags="rcD"
4666     ar_o='$@'
4667 else
4668     arflags="rc"
4669     ar_o='$@'
4670 fi
4671
4672 add_cflags $extra_cflags
4673 add_cxxflags $extra_cxxflags
4674 add_objcflags $extra_objcflags
4675 add_asflags $extra_cflags
4676
4677 if test -n "$sysroot"; then
4678     case "$cc_type" in
4679         gcc|llvm_gcc|clang)
4680             add_cppflags --sysroot="$sysroot"
4681             add_ldflags --sysroot="$sysroot"
4682         ;;
4683     esac
4684 fi
4685
4686 if test "$cpu" = host; then
4687     enabled cross_compile &&
4688         die "--cpu=host makes no sense when cross-compiling."
4689
4690     case "$cc_type" in
4691         gcc|llvm_gcc)
4692             check_native(){
4693                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4694                 sed -n "/cc1.*$1=/{
4695                             s/.*$1=\\([^ ]*\\).*/\\1/
4696                             p
4697                             q
4698                         }" $TMPE
4699             }
4700             cpu=$(check_native -march || check_native -mcpu)
4701         ;;
4702         clang)
4703             check_native(){
4704                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4705                 sed -n "/cc1.*-target-cpu /{
4706                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4707                             p
4708                             q
4709                         }" $TMPE
4710             }
4711             cpu=$(check_native -march)
4712         ;;
4713     esac
4714
4715     test "${cpu:-host}" = host &&
4716         die "--cpu=host not supported with compiler $cc"
4717 fi
4718
4719 # Deal with common $arch aliases
4720 case "$arch" in
4721     aarch64|arm64)
4722         arch="aarch64"
4723     ;;
4724     arm*|iPad*|iPhone*)
4725         arch="arm"
4726     ;;
4727     mips*|IP*)
4728         case "$arch" in
4729         *el)
4730             add_cppflags -EL
4731             add_ldflags -EL
4732         ;;
4733         *eb)
4734             add_cppflags -EB
4735             add_ldflags -EB
4736         ;;
4737         esac
4738         arch="mips"
4739     ;;
4740     parisc*|hppa*)
4741         arch="parisc"
4742     ;;
4743     "Power Macintosh"|ppc*|powerpc*)
4744         arch="ppc"
4745     ;;
4746     s390|s390x)
4747         arch="s390"
4748     ;;
4749     sh4|sh)
4750         arch="sh4"
4751     ;;
4752     sun4*|sparc*)
4753         arch="sparc"
4754     ;;
4755     tilegx|tile-gx)
4756         arch="tilegx"
4757     ;;
4758     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4759         arch="x86"
4760     ;;
4761 esac
4762
4763 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4764 enable $arch
4765
4766 # Add processor-specific flags
4767 if enabled aarch64; then
4768
4769     case $cpu in
4770         armv*)
4771             cpuflags="-march=$cpu"
4772         ;;
4773         *)
4774             cpuflags="-mcpu=$cpu"
4775         ;;
4776     esac
4777
4778 elif enabled alpha; then
4779
4780     cpuflags="-mcpu=$cpu"
4781
4782 elif enabled arm; then
4783
4784     check_arm_arch() {
4785         test_cpp_condition stddef.h \
4786             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4787             $cpuflags
4788     }
4789
4790     probe_arm_arch() {
4791         if   check_arm_arch 4;        then echo armv4
4792         elif check_arm_arch 4T;       then echo armv4t
4793         elif check_arm_arch 5;        then echo armv5
4794         elif check_arm_arch 5E;       then echo armv5e
4795         elif check_arm_arch 5T;       then echo armv5t
4796         elif check_arm_arch 5TE;      then echo armv5te
4797         elif check_arm_arch 5TEJ;     then echo armv5te
4798         elif check_arm_arch 6;        then echo armv6
4799         elif check_arm_arch 6J;       then echo armv6j
4800         elif check_arm_arch 6K;       then echo armv6k
4801         elif check_arm_arch 6Z;       then echo armv6z
4802         elif check_arm_arch 6KZ;      then echo armv6zk
4803         elif check_arm_arch 6ZK;      then echo armv6zk
4804         elif check_arm_arch 6T2;      then echo armv6t2
4805         elif check_arm_arch 7;        then echo armv7
4806         elif check_arm_arch 7A  7_A;  then echo armv7-a
4807         elif check_arm_arch 7S;       then echo armv7-a
4808         elif check_arm_arch 7R  7_R;  then echo armv7-r
4809         elif check_arm_arch 7M  7_M;  then echo armv7-m
4810         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4811         elif check_arm_arch 8A  8_A;  then echo armv8-a
4812         fi
4813     }
4814
4815     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4816
4817     case $cpu in
4818         armv*)
4819             cpuflags="-march=$cpu"
4820             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4821         ;;
4822         *)
4823             cpuflags="-mcpu=$cpu"
4824             case $cpu in
4825                 cortex-a*)                               subarch=armv7a  ;;
4826                 cortex-r*)                               subarch=armv7r  ;;
4827                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4828                 arm11*)                                  subarch=armv6   ;;
4829                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4830                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4831                 *)                             subarch=$(probe_arm_arch) ;;
4832             esac
4833         ;;
4834     esac
4835
4836     case "$subarch" in
4837         armv5t*)    enable fast_clz                ;;
4838         armv[6-8]*)
4839             enable fast_clz
4840             disabled fast_unaligned || enable fast_unaligned
4841             ;;
4842     esac
4843
4844 elif enabled avr32; then
4845
4846     case $cpu in
4847         ap7[02]0[0-2])
4848             subarch="avr32_ap"
4849             cpuflags="-mpart=$cpu"
4850         ;;
4851         ap)
4852             subarch="avr32_ap"
4853             cpuflags="-march=$cpu"
4854         ;;
4855         uc3[ab]*)
4856             subarch="avr32_uc"
4857             cpuflags="-mcpu=$cpu"
4858         ;;
4859         uc)
4860             subarch="avr32_uc"
4861             cpuflags="-march=$cpu"
4862         ;;
4863     esac
4864
4865 elif enabled bfin; then
4866
4867     cpuflags="-mcpu=$cpu"
4868
4869 elif enabled mips; then
4870
4871     cpuflags="-march=$cpu"
4872
4873     if [ "$cpu" != "generic" ]; then
4874         disable mips32r2
4875         disable mips32r5
4876         disable mips64r2
4877         disable mips32r6
4878         disable mips64r6
4879         disable loongson2
4880         disable loongson3
4881
4882         case $cpu in
4883             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4884                 enable mips32r2
4885                 disable msa
4886             ;;
4887             p5600|i6400|p6600)
4888                 disable mipsdsp
4889                 disable mipsdspr2
4890             ;;
4891             loongson*)
4892                 enable loongson2
4893                 enable loongson3
4894                 enable local_aligned
4895                 enable simd_align_16
4896                 enable fast_64bit
4897                 enable fast_clz
4898                 enable fast_cmov
4899                 enable fast_unaligned
4900                 disable aligned_stack
4901                 disable mipsdsp
4902                 disable mipsdspr2
4903                 # When gcc version less than 5.3.0, add -fno-expensive-optimizations flag.
4904                 if [ $cc == gcc ]; then
4905                     gcc_version=$(gcc -dumpversion)
4906                     if [ "$(echo "$gcc_version 5.3.0" | tr " " "\n" | sort -rV | head -n 1)" == "$gcc_version" ]; then
4907                         expensive_optimization_flag=""
4908                     else
4909                         expensive_optimization_flag="-fno-expensive-optimizations"
4910                     fi
4911                 fi
4912                 case $cpu in
4913                     loongson3*)
4914                         cpuflags="-march=loongson3a -mhard-float $expensive_optimization_flag"
4915                     ;;
4916                     loongson2e)
4917                         cpuflags="-march=loongson2e -mhard-float $expensive_optimization_flag"
4918                     ;;
4919                     loongson2f)
4920                         cpuflags="-march=loongson2f -mhard-float $expensive_optimization_flag"
4921                     ;;
4922                 esac
4923             ;;
4924             *)
4925                 # Unknown CPU. Disable everything.
4926                 warn "unknown CPU. Disabling all MIPS optimizations."
4927                 disable mipsfpu
4928                 disable mipsdsp
4929                 disable mipsdspr2
4930                 disable msa
4931                 disable mmi
4932             ;;
4933         esac
4934
4935         case $cpu in
4936             24kc)
4937                 disable mipsfpu
4938                 disable mipsdsp
4939                 disable mipsdspr2
4940             ;;
4941             24kf*)
4942                 disable mipsdsp
4943                 disable mipsdspr2
4944             ;;
4945             24kec|34kc|1004kc)
4946                 disable mipsfpu
4947                 disable mipsdspr2
4948             ;;
4949             24kef*|34kf*|1004kf*)
4950                 disable mipsdspr2
4951             ;;
4952             74kc)
4953                 disable mipsfpu
4954             ;;
4955             p5600)
4956                 enable mips32r5
4957                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4958             ;;
4959             i6400)
4960                 enable mips64r6
4961                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4962             ;;
4963             p6600)
4964                 enable mips64r6
4965                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4966             ;;
4967         esac
4968     else
4969         # We do not disable anything. Is up to the user to disable the unwanted features.
4970         warn 'generic cpu selected'
4971     fi
4972
4973 elif enabled ppc; then
4974
4975     disable ldbrx
4976
4977     case $(tolower $cpu) in
4978         601|ppc601|powerpc601)
4979             cpuflags="-mcpu=601"
4980             disable altivec
4981         ;;
4982         603*|ppc603*|powerpc603*)
4983             cpuflags="-mcpu=603"
4984             disable altivec
4985         ;;
4986         604*|ppc604*|powerpc604*)
4987             cpuflags="-mcpu=604"
4988             disable altivec
4989         ;;
4990         g3|75*|ppc75*|powerpc75*)
4991             cpuflags="-mcpu=750"
4992             disable altivec
4993         ;;
4994         g4|745*|ppc745*|powerpc745*)
4995             cpuflags="-mcpu=7450"
4996             disable vsx
4997         ;;
4998         74*|ppc74*|powerpc74*)
4999             cpuflags="-mcpu=7400"
5000             disable vsx
5001         ;;
5002         g5|970|ppc970|powerpc970)
5003             cpuflags="-mcpu=970"
5004             disable vsx
5005         ;;
5006         power[3-6]*)
5007             cpuflags="-mcpu=$cpu"
5008             disable vsx
5009         ;;
5010         power[7-8]*)
5011             cpuflags="-mcpu=$cpu"
5012         ;;
5013         cell)
5014             cpuflags="-mcpu=cell"
5015             enable ldbrx
5016             disable vsx
5017         ;;
5018         e500mc)
5019             cpuflags="-mcpu=e500mc"
5020             disable altivec
5021         ;;
5022         e500v2)
5023             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
5024             disable altivec
5025             disable dcbzl
5026         ;;
5027         e500)
5028             cpuflags="-mcpu=8540 -mhard-float"
5029             disable altivec
5030             disable dcbzl
5031         ;;
5032     esac
5033
5034 elif enabled sparc; then
5035
5036     case $cpu in
5037         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
5038             cpuflags="-mcpu=$cpu"
5039         ;;
5040         ultrasparc*|niagara[234])
5041             cpuflags="-mcpu=$cpu"
5042         ;;
5043     esac
5044
5045 elif enabled x86; then
5046
5047     case $cpu in
5048         i[345]86|pentium)
5049             cpuflags="-march=$cpu"
5050             disable i686
5051             disable mmx
5052         ;;
5053         # targets that do NOT support nopl and conditional mov (cmov)
5054         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
5055             cpuflags="-march=$cpu"
5056             disable i686
5057         ;;
5058         # targets that do support nopl and conditional mov (cmov)
5059         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
5060         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
5061         |amdfam10|barcelona|b[dt]ver*|znver*)
5062             cpuflags="-march=$cpu"
5063             enable i686
5064             enable fast_cmov
5065         ;;
5066         # targets that do support conditional mov but on which it's slow
5067         pentium4|pentium4m|prescott|nocona)
5068             cpuflags="-march=$cpu"
5069             enable i686
5070             disable fast_cmov
5071         ;;
5072     esac
5073
5074 fi
5075
5076 if [ "$cpu" != generic ]; then
5077     add_cflags  $cpuflags
5078     add_asflags $cpuflags
5079     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
5080 fi
5081
5082 # compiler sanity check
5083 test_exec <<EOF
5084 int main(void){ return 0; }
5085 EOF
5086 if test "$?" != 0; then
5087     echo "$cc is unable to create an executable file."
5088     if test -z "$cross_prefix" && ! enabled cross_compile ; then
5089         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
5090         echo "Only do this if you know what cross compiling means."
5091     fi
5092     die "C compiler test failed."
5093 fi
5094
5095 add_cppflags -D_ISOC99_SOURCE
5096 add_cxxflags -D__STDC_CONSTANT_MACROS
5097 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
5098
5099 # some compilers silently accept -std=c11, so we also need to check that the
5100 # version macro is defined properly
5101 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
5102     add_cflags -std=c11 ||
5103     check_cflags -std=c99
5104
5105 check_cppflags -D_FILE_OFFSET_BITS=64
5106 check_cppflags -D_LARGEFILE_SOURCE
5107
5108 add_host_cppflags -D_ISOC99_SOURCE
5109 check_host_cflags -std=c99
5110 check_host_cflags -Wall
5111 check_host_cflags $host_cflags_speed
5112
5113 check_64bit(){
5114     arch32=$1
5115     arch64=$2
5116     expr=${3:-'sizeof(void *) > 4'}
5117     test_code cc "" "int test[2*($expr) - 1]" &&
5118         subarch=$arch64 || subarch=$arch32
5119     enable $subarch
5120 }
5121
5122 case "$arch" in
5123     aarch64|alpha|ia64)
5124         enabled shared && enable_weak pic
5125     ;;
5126     mips)
5127         check_64bit mips mips64 '_MIPS_SIM > 1'
5128         enabled shared && enable_weak pic
5129     ;;
5130     parisc)
5131         check_64bit parisc parisc64
5132         enabled shared && enable_weak pic
5133     ;;
5134     ppc)
5135         check_64bit ppc ppc64
5136         enabled shared && enable_weak pic
5137     ;;
5138     s390)
5139         check_64bit s390 s390x
5140         enabled shared && enable_weak pic
5141     ;;
5142     sparc)
5143         check_64bit sparc sparc64
5144         enabled shared && enable_weak pic
5145     ;;
5146     x86)
5147         check_64bit x86_32 x86_64
5148         # Treat x32 as x64 for now. Note it also needs pic if shared
5149         test "$subarch" = "x86_32" && test_cpp_condition stddef.h 'defined(__x86_64__)' &&
5150             subarch=x86_64 && enable x86_64 && disable x86_32
5151         if enabled x86_64; then
5152             enabled shared && enable_weak pic
5153             objformat=elf64
5154         fi
5155     ;;
5156 esac
5157
5158 # OS specific
5159 case $target_os in
5160     aix)
5161         SHFLAGS=-shared
5162         add_cppflags '-I\$(SRC_PATH)/compat/aix'
5163         enabled shared && add_ldflags -Wl,-brtl
5164         arflags='-Xany -r -c'
5165         striptype=""
5166         ;;
5167     android)
5168         disable symver
5169         enable section_data_rel_ro
5170         add_cflags -fPIE
5171         add_ldexeflags -fPIE -pie
5172         SLIB_INSTALL_NAME='$(SLIBNAME)'
5173         SLIB_INSTALL_LINKS=
5174         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
5175         ;;
5176     haiku)
5177         prefix_default="/boot/common"
5178         network_extralibs="-lnetwork"
5179         host_extralibs=
5180         ;;
5181     sunos)
5182         SHFLAGS='-shared -Wl,-h,$$(@F)'
5183         enabled x86 && append SHFLAGS -mimpure-text
5184         network_extralibs="-lsocket -lnsl"
5185         add_cppflags -D__EXTENSIONS__
5186         # When using suncc to build, the Solaris linker will mark
5187         # an executable with each instruction set encountered by
5188         # the Solaris assembler.  As our libraries contain their own
5189         # guards for processor-specific code, instead suppress
5190         # generation of the HWCAPS ELF section on Solaris x86 only.
5191         enabled_all suncc x86 &&
5192             echo "hwcap_1 = OVERRIDE;" > mapfile &&
5193             add_ldflags -Wl,-M,mapfile
5194         nm_default='nm -P -g'
5195         striptype=""
5196         version_script='-M'
5197         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
5198         ;;
5199     netbsd)
5200         disable symver
5201         oss_indev_extralibs="-lossaudio"
5202         oss_outdev_extralibs="-lossaudio"
5203         enabled gcc || check_ldflags -Wl,-zmuldefs
5204         ;;
5205     openbsd|bitrig)
5206         disable symver
5207         striptype=""
5208         SHFLAGS='-shared'
5209         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
5210         SLIB_INSTALL_LINKS=
5211         oss_indev_extralibs="-lossaudio"
5212         oss_outdev_extralibs="-lossaudio"
5213         ;;
5214     dragonfly)
5215         disable symver
5216         ;;
5217     freebsd)
5218         ;;
5219     bsd/os)
5220         add_extralibs -lpoll -lgnugetopt
5221         strip="strip -d"
5222         ;;
5223     darwin)
5224         enabled ppc && add_asflags -force_cpusubtype_ALL
5225         install_name_dir_default='$(SHLIBDIR)'
5226         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
5227         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
5228         strip="${strip} -x"
5229         add_ldflags -Wl,-dynamic,-search_paths_first
5230         check_cflags -Werror=partial-availability
5231         SLIBSUF=".dylib"
5232         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
5233         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
5234         enabled x86_64 && objformat="macho64" || objformat="macho32"
5235         enabled_any pic shared x86_64 ||
5236             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
5237         check_headers dispatch/dispatch.h &&
5238             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
5239         if test -n "$sysroot"; then
5240             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
5241             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
5242         fi
5243         version_script='-exported_symbols_list'
5244         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
5245         ;;
5246     msys*)
5247         die "Native MSYS builds are discouraged, please use the MINGW environment."
5248         ;;
5249     mingw32*|mingw64*)
5250         target_os=mingw32
5251         LIBTARGET=i386
5252         if enabled x86_64; then
5253             LIBTARGET="i386:x86-64"
5254         elif enabled arm; then
5255             LIBTARGET="arm"
5256         elif enabled aarch64; then
5257             LIBTARGET="arm64"
5258         fi
5259         if enabled shared; then
5260             # Cannot build both shared and static libs when using dllimport.
5261             disable static
5262         fi
5263         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5264         enabled x86_32 && check_ldflags -Wl,--large-address-aware
5265         shlibdir_default="$bindir_default"
5266         SLIBPREF=""
5267         SLIBSUF=".dll"
5268         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5269         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5270         if test_cmd lib.exe -list; then
5271             SLIB_EXTRA_CMD=-'lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5272             if enabled x86_64; then
5273                 LIBTARGET=x64
5274             fi
5275         else
5276             SLIB_EXTRA_CMD=-'$(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
5277         fi
5278         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5279         SLIB_INSTALL_LINKS=
5280         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5281         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5282         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5283         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--disable-auto-image-base $$(@:$(SLIBSUF)=.def)'
5284         enabled x86_64 && objformat="win64" || objformat="win32"
5285         dlltool="${cross_prefix}dlltool"
5286         ranlib=:
5287         enable dos_paths
5288         check_ldflags -Wl,--nxcompat,--dynamicbase
5289         # Lets work around some stupidity in binutils.
5290         # ld will strip relocations from executables even though we need them
5291         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
5292         # however ld then forgets what the entry point should be (oops) so we
5293         # have to manually (re)set it.
5294         if enabled x86_32; then
5295             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
5296         elif enabled x86_64; then
5297             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
5298             check_ldflags -Wl,--high-entropy-va # binutils 2.25
5299             # Set image base >4GB for extra entropy with HEASLR
5300             add_ldexeflags -Wl,--image-base,0x140000000
5301             append SHFLAGS -Wl,--image-base,0x180000000
5302         fi
5303         ;;
5304     win32|win64)
5305         disable symver
5306         if enabled shared; then
5307             # Link to the import library instead of the normal static library
5308             # for shared libs.
5309             LD_LIB='%.lib'
5310             # Cannot build both shared and static libs with MSVC or icl.
5311             disable static
5312         fi
5313         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
5314         shlibdir_default="$bindir_default"
5315         SLIBPREF=""
5316         SLIBSUF=".dll"
5317         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5318         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5319         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5320         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5321         SLIB_INSTALL_LINKS=
5322         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5323         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5324         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5325         enabled x86_64 && objformat="win64" || objformat="win32"
5326         ranlib=:
5327         enable dos_paths
5328         ;;
5329     cygwin*)
5330         target_os=cygwin
5331         shlibdir_default="$bindir_default"
5332         SLIBPREF="cyg"
5333         SLIBSUF=".dll"
5334         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5335         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5336         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5337         SLIB_INSTALL_LINKS=
5338         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5339         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5340         enabled x86_64 && objformat="win64" || objformat="win32"
5341         enable dos_paths
5342         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5343         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5344         ;;
5345     *-dos|freedos|opendos)
5346         network_extralibs="-lsocket"
5347         objformat="coff"
5348         enable dos_paths
5349         ;;
5350     linux)
5351         enable section_data_rel_ro
5352         enabled_any arm aarch64 && enable_weak linux_perf
5353         ;;
5354     irix*)
5355         target_os=irix
5356         ranlib="echo ignoring ranlib"
5357         ;;
5358     os/2*)
5359         strip="lxlite -CS"
5360         striptype=""
5361         objformat="aout"
5362         add_cppflags -D_GNU_SOURCE
5363         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5364         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5365         LIBSUF="_s.a"
5366         SLIBPREF=""
5367         SLIBSUF=".dll"
5368         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5369         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5370         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5371             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5372             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5373             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5374             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5375         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5376             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5377         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5378         SLIB_INSTALL_LINKS=
5379         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5380         enable dos_paths
5381         enable_weak os2threads
5382         ;;
5383     gnu/kfreebsd)
5384         add_cppflags -D_BSD_SOURCE
5385         ;;
5386     gnu)
5387         ;;
5388     qnx)
5389         add_cppflags -D_QNX_SOURCE
5390         network_extralibs="-lsocket"
5391         ;;
5392     symbian)
5393         SLIBSUF=".dll"
5394         enable dos_paths
5395         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5396         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5397         add_ldflags -Wl,--target1-abs,--no-undefined \
5398                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5399                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5400         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5401                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5402                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5403         ;;
5404     minix)
5405         ;;
5406     none)
5407         ;;
5408     *)
5409         die "Unknown OS '$target_os'."
5410         ;;
5411 esac
5412
5413 # test if creating links works
5414 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5415 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5416 mkdir "$link_dest"
5417 $ln_s "$link_dest" "$link_name"
5418 touch "$link_dest/test_file"
5419 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5420     # create link to source path
5421     [ -e src ] && rm src
5422     $ln_s "$source_path" src
5423     source_link=src
5424 else
5425     # creating directory links doesn't work
5426     # fall back to using the full source path
5427     source_link="$source_path"
5428 fi
5429 # cleanup
5430 rm -r "$link_dest"
5431 rm -r "$link_name"
5432
5433 # determine libc flavour
5434
5435 probe_libc(){
5436     pfx=$1
5437     pfx_no_=${pfx%_}
5438     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5439     if test_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5440         eval ${pfx}libc_type=uclibc
5441         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5442     elif test_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5443         eval ${pfx}libc_type=glibc
5444         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5445     # MinGW headers can be installed on Cygwin, so check for newlib first.
5446     elif test_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5447         eval ${pfx}libc_type=newlib
5448         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5449     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5450     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5451         eval ${pfx}libc_type=mingw64
5452         if test_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5453             add_compat msvcrt/snprintf.o
5454             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5455         fi
5456         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5457         eval test \$${pfx_no_}cc_type = "gcc" &&
5458             add_${pfx}cppflags -D__printf__=__gnu_printf__
5459         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5460             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5461     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5462          test_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5463         eval ${pfx}libc_type=mingw32
5464         test_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5465             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5466             die "ERROR: MinGW32 runtime version must be >= 3.15."
5467         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5468         test_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5469             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5470         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5471             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5472         eval test \$${pfx_no_}cc_type = "gcc" &&
5473             add_${pfx}cppflags -D__printf__=__gnu_printf__
5474     elif test_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5475         eval ${pfx}libc_type=msvcrt
5476         if test_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5477             if [ "$pfx" = host_ ]; then
5478                 add_host_cppflags -Dsnprintf=_snprintf
5479             else
5480                 add_compat strtod.o strtod=avpriv_strtod
5481                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5482                                              _snprintf=avpriv_snprintf  \
5483                                              vsnprintf=avpriv_vsnprintf
5484             fi
5485         fi
5486         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5487         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5488         # 0x601 by default unless something else is set by the user.
5489         # This can easily lead to us detecting functions only present
5490         # in such new versions and producing binaries requiring windows 7.0.
5491         # Therefore explicitly set the default to Vista unless the user has
5492         # set something else on the command line.
5493         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5494         # family. For these cases, configure is free to use any functions
5495         # found in the SDK headers by default. (Alternatively, we could force
5496         # _WIN32_WINNT to 0x0602 in that case.)
5497         test_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5498             { test_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0600; }
5499 #ifdef WINAPI_FAMILY
5500 #include <winapifamily.h>
5501 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5502 #error not desktop
5503 #endif
5504 #endif
5505 EOF
5506         if [ "$pfx" = "" ]; then
5507             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5508             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5509         fi
5510     elif test_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5511         eval ${pfx}libc_type=klibc
5512     elif test_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5513         eval ${pfx}libc_type=bionic
5514     elif test_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5515         eval ${pfx}libc_type=solaris
5516         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5517     elif test_${pfx}cpp_condition sys/version.h "defined __DJGPP__"; then
5518         eval ${pfx}libc_type=djgpp
5519         add_cppflags -U__STRICT_ANSI__
5520         add_cflags "-include $source_path/compat/djgpp/math.h"
5521         add_compat djgpp/math.o
5522     fi
5523     test_${pfx}cc <<EOF
5524 #include <time.h>
5525 void *v = localtime_r;
5526 EOF
5527 test "$?" != 0 && test_${pfx}cc -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 <<EOF && add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5528 #include <time.h>
5529 void *v = localtime_r;
5530 EOF
5531
5532     eval test -n "\${${pfx}libc_type}" && enable ${pfx}libc_${libc_type}
5533 }
5534
5535 probe_libc
5536 probe_libc host_
5537
5538 # hacks for compiler/libc/os combinations
5539
5540 case $libc_type in
5541     bionic)
5542         add_compat strtod.o strtod=avpriv_strtod
5543         ;;
5544 esac
5545
5546 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5547     add_cppflags '-I\$(SRC_PATH)/compat/float'
5548
5549 test_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5550
5551 set_default libdir
5552 : ${shlibdir_default:="$libdir"}
5553 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5554
5555 set_default $PATHS_LIST
5556 set_default nm
5557
5558 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5559
5560 enable_weak_pic() {
5561     disabled pic && return
5562     enable pic
5563     add_cppflags -DPIC
5564     case "$target_os" in
5565     mingw*|cygwin*|win*)
5566         ;;
5567     *)
5568         add_cflags -fPIC
5569         add_asflags -fPIC
5570         ;;
5571     esac
5572 }
5573
5574 enabled pic && enable_weak_pic
5575
5576 test_cc <<EOF || die "Symbol mangling check failed."
5577 int ff_extern;
5578 EOF
5579 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5580 extern_prefix=${sym%%ff_extern*}
5581
5582 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
5583
5584 for restrict_keyword in restrict __restrict__ __restrict ""; do
5585     test_code cc "" "char * $restrict_keyword p" && break
5586 done
5587
5588 check_cc pragma_deprecated "" '_Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"")'
5589
5590 # The global variable ensures the bits appear unchanged in the object file.
5591 test_cc <<EOF || die "endian test failed"
5592 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5593 EOF
5594 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5595
5596 check_cc const_nan math.h "struct { double d; } static const bar[] = { { NAN } }"
5597
5598 if ! enabled ppc64 || enabled bigendian; then
5599     disable vsx
5600 fi
5601
5602 check_gas() {
5603     log "check_gas using '$as' as AS"
5604     # :vararg is used on aarch64, arm and ppc altivec
5605     check_as vararg "
5606 .macro m n, y:vararg=0
5607 \n: .int \y
5608 .endm
5609 m x" || return 1
5610     # .altmacro is only used in arm asm
5611     ! enabled arm || check_as gnu_as ".altmacro"
5612 }
5613
5614 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5615     nogas=:
5616     enabled_any arm aarch64 && nogas=die
5617     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5618     as_noop=-v
5619
5620     case $as_type in
5621         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5622         gcc)  gaspp_as_type=gas ;;
5623         *)    gaspp_as_type=$as_type ;;
5624     esac
5625
5626     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5627
5628     test "${as#*gas-preprocessor.pl}" != "$as" ||
5629     test_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5630         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5631
5632     if ! check_gas ; then
5633         as=${gas:=$as}
5634         check_gas || \
5635             $nogas "GNU assembler not found, install/update gas-preprocessor"
5636     fi
5637
5638     check_as as_func ".func test
5639                       .endfunc"
5640 fi
5641
5642 check_inline_asm inline_asm_labels '"1:\n"'
5643
5644 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5645
5646 if enabled aarch64; then
5647     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5648     # internal assembler in clang 3.3 does not support this instruction
5649     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5650     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5651
5652     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5653
5654 elif enabled alpha; then
5655
5656     check_cflags -mieee
5657
5658 elif enabled arm; then
5659
5660     enabled msvc && check_cpp_condition thumb stddef.h "defined _M_ARMT"
5661     test_cpp_condition stddef.h "defined __thumb__" && test_cc <<EOF && enable_weak thumb
5662 float func(float a, float b){ return a+b; }
5663 EOF
5664     enabled thumb && check_cflags -mthumb || check_cflags -marm
5665
5666     if check_cpp_condition vfp_args stddef.h "defined __ARM_PCS_VFP"; then
5667         :
5668     elif check_cpp_condition vfp_args stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5669         :
5670     elif ! test_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5671         case "${cross_prefix:-$cc}" in
5672             *hardfloat*) enable vfp_args; fpabi=vfp ;;
5673             *) check_ld "cc" vfp_args <<EOF && fpabi=vfp || fpabi=soft ;;
5674 __asm__ (".eabi_attribute 28, 1");
5675 int main(void) { return 0; }
5676 EOF
5677         esac
5678         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5679     fi
5680
5681     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5682     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5683     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5684     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5685     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5686     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5687     enabled setend  && check_insn setend  'setend be'
5688
5689     [ $target_os = linux ] || [ $target_os = android ] ||
5690         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5691             $ARCH_EXT_LIST_ARM
5692
5693     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5694
5695     check_as as_arch_directive ".arch armv7-a"
5696     check_as as_dn_directive   "ra .dn d0.i16"
5697     check_as as_fpu_directive  ".fpu neon"
5698
5699     # llvm's integrated assembler supports .object_arch from llvm 3.5
5700     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5701         check_as as_object_arch ".object_arch armv4"
5702
5703     # MS armasm fails to assemble our PIC constructs
5704     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5705
5706 elif enabled mips; then
5707
5708     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5709     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5710     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5711
5712     # Enable minimum ISA based on selected options
5713     if enabled mips64; then
5714         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5715         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5716         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5717     else
5718         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5719         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5720         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5721         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5722     fi
5723
5724     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5725     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5726     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_headers msa.h || disable msa
5727     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5728     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5729
5730     if enabled bigendian && enabled msa; then
5731         disable msa
5732     fi
5733
5734 elif enabled parisc; then
5735
5736     if enabled gcc; then
5737         case $($cc -dumpversion) in
5738             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5739         esac
5740     fi
5741
5742 elif enabled ppc; then
5743
5744     enable local_aligned
5745
5746     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5747     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5748     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5749     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5750
5751     if enabled altivec; then
5752         check_cflags -maltivec -mabi=altivec
5753
5754         # check if our compiler supports Motorola AltiVec C API
5755         check_cc altivec altivec.h "vector signed int v1 = (vector signed int) { 0 };
5756                                     vector signed int v2 = (vector signed int) { 1 };
5757                                     v1 = vec_add(v1, v2);"
5758
5759         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5760     fi
5761
5762     if enabled vsx; then
5763         check_cflags -mvsx &&
5764         check_cc vsx altivec.h "int v[4] = { 0 };
5765                                 vector signed int v1 = vec_vsx_ld(0, v);"
5766     fi
5767
5768     if enabled power8; then
5769         check_cpp_condition power8 "altivec.h" "defined(_ARCH_PWR8)"
5770     fi
5771
5772 elif enabled x86; then
5773
5774     check_builtin rdtsc    intrin.h   "__rdtsc()"
5775     check_builtin mm_empty mmintrin.h "_mm_empty()"
5776
5777     enable local_aligned
5778
5779     # check whether EBP is available on x86
5780     # As 'i' is stored on the stack, this program will crash
5781     # if the base pointer is used to access it because the
5782     # base pointer is cleared in the inline assembly code.
5783     check_exec_crash <<EOF && enable ebp_available
5784 volatile int i=0;
5785 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5786 return i;
5787 EOF
5788
5789     # check whether EBX is available on x86
5790     check_inline_asm ebx_available '""::"b"(0)' &&
5791         check_inline_asm ebx_available '"":::"%ebx"'
5792
5793     # check whether xmm clobbers are supported
5794     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5795
5796     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5797         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5798
5799     # check whether binutils is new enough to compile SSSE3/MMXEXT
5800     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5801     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5802
5803     probe_x86asm(){
5804         x86asmexe_probe=$1
5805         if test_cmd $x86asmexe_probe -v; then
5806             x86asmexe=$x86asmexe_probe
5807             x86asm_type=nasm
5808             x86asm_debug="-g -F dwarf"
5809             X86ASMDEP=
5810             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5811         elif test_cmd $x86asmexe_probe --version; then
5812             x86asmexe=$x86asmexe_probe
5813             x86asm_type=yasm
5814             x86asm_debug="-g dwarf2"
5815             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
5816             X86ASM_DEPFLAGS=
5817         fi
5818         check_x86asm x86asm "movbe ecx, [5]"
5819     }
5820
5821     if ! disabled_any asm mmx x86asm; then
5822         disable x86asm
5823         for program in $x86asmexe nasm yasm; do
5824             probe_x86asm $program && break
5825         done
5826         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
5827         X86ASMFLAGS="-f $objformat"
5828         enabled pic               && append X86ASMFLAGS "-DPIC"
5829         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
5830         case "$objformat" in
5831             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
5832         esac
5833
5834         check_x86asm avx512_external "vmovdqa32 [eax]{k1}{z}, zmm0"
5835         check_x86asm avx2_external   "vextracti128 xmm0, ymm0, 0"
5836         check_x86asm xop_external    "vpmacsdd xmm0, xmm1, xmm2, xmm3"
5837         check_x86asm fma4_external   "vfmaddps ymm0, ymm1, ymm2, ymm3"
5838         check_x86asm cpunop          "CPU amdnop"
5839     fi
5840
5841     case "$cpu" in
5842         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5843             disable fast_clz
5844         ;;
5845     esac
5846
5847 fi
5848
5849 check_cc intrinsics_neon arm_neon.h "int16x8_t test = vdupq_n_s16(0)"
5850
5851 check_ldflags -Wl,--as-needed
5852 check_ldflags -Wl,-z,noexecstack
5853
5854 if ! disabled network; then
5855     check_func getaddrinfo $network_extralibs
5856     check_func inet_aton $network_extralibs
5857
5858     check_type netdb.h "struct addrinfo"
5859     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5860     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5861     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5862     check_type poll.h "struct pollfd"
5863     check_type netinet/sctp.h "struct sctp_event_subscribe"
5864     check_struct "sys/socket.h" "struct msghdr" msg_flags
5865     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5866     check_type netinet/in.h "struct sockaddr_in6"
5867     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5868     check_type "sys/types.h sys/socket.h" socklen_t
5869
5870     # Prefer arpa/inet.h over winsock2
5871     if check_headers arpa/inet.h ; then
5872         check_func closesocket
5873     elif check_headers winsock2.h ; then
5874         check_func_headers winsock2.h closesocket -lws2 &&
5875             network_extralibs="-lws2" ||
5876         { check_func_headers winsock2.h closesocket -lws2_32 &&
5877             network_extralibs="-lws2_32"; } || disable winsock2_h network
5878         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5879
5880         check_type ws2tcpip.h socklen_t
5881         check_type ws2tcpip.h "struct addrinfo"
5882         check_type ws2tcpip.h "struct group_source_req"
5883         check_type ws2tcpip.h "struct ip_mreq_source"
5884         check_type ws2tcpip.h "struct ipv6_mreq"
5885         check_type winsock2.h "struct pollfd"
5886         check_struct winsock2.h "struct sockaddr" sa_len
5887         check_type ws2tcpip.h "struct sockaddr_in6"
5888         check_type ws2tcpip.h "struct sockaddr_storage"
5889     else
5890         disable network
5891     fi
5892 fi
5893
5894 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5895 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5896 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5897 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5898 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5899 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5900 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5901
5902 case "$custom_allocator" in
5903     jemalloc)
5904         # jemalloc by default does not use a prefix
5905         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5906     ;;
5907     tcmalloc)
5908         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
5909         malloc_prefix=tc_
5910     ;;
5911 esac
5912
5913 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5914 check_func  ${malloc_prefix}memalign            && enable memalign
5915 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5916
5917 check_func  access
5918 check_func_headers stdlib.h arc4random
5919 check_lib   clock_gettime time.h clock_gettime || check_lib clock_gettime time.h clock_gettime -lrt
5920 check_func  fcntl
5921 check_func  fork
5922 check_func  gethrtime
5923 check_func  getopt
5924 check_func  getrusage
5925 check_func  gettimeofday
5926 check_func  isatty
5927 check_func  mkstemp
5928 check_func  mmap
5929 check_func  mprotect
5930 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5931 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
5932 check_func  sched_getaffinity
5933 check_func  setrlimit
5934 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5935 check_func  strerror_r
5936 check_func  sysconf
5937 check_func  sysctl
5938 check_func  usleep
5939
5940 check_func_headers conio.h kbhit
5941 check_func_headers io.h setmode
5942 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5943 check_func_headers mach/mach_time.h mach_absolute_time
5944 check_func_headers stdlib.h getenv
5945 check_func_headers sys/stat.h lstat
5946
5947 check_func_headers windows.h GetProcessAffinityMask
5948 check_func_headers windows.h GetProcessTimes
5949 check_func_headers windows.h GetSystemTimeAsFileTime
5950 check_func_headers windows.h LoadLibrary
5951 check_func_headers windows.h MapViewOfFile
5952 check_func_headers windows.h PeekNamedPipe
5953 check_func_headers windows.h SetConsoleTextAttribute
5954 check_func_headers windows.h SetConsoleCtrlHandler
5955 check_func_headers windows.h Sleep
5956 check_func_headers windows.h VirtualAlloc
5957 check_func_headers glob.h glob
5958 enabled xlib &&
5959     check_lib xlib "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5960
5961 check_headers direct.h
5962 check_headers dirent.h
5963 check_headers dxgidebug.h
5964 check_headers dxva.h
5965 check_headers dxva2api.h -D_WIN32_WINNT=0x0600
5966 check_headers io.h
5967 check_headers linux/perf_event.h
5968 check_headers libcrystalhd/libcrystalhd_if.h
5969 check_headers malloc.h
5970 check_headers net/udplite.h
5971 check_headers poll.h
5972 check_headers sys/param.h
5973 check_headers sys/resource.h
5974 check_headers sys/select.h
5975 check_headers sys/time.h
5976 check_headers sys/un.h
5977 check_headers termios.h
5978 check_headers unistd.h
5979 check_headers valgrind/valgrind.h
5980 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5981 check_headers windows.h
5982 check_headers X11/extensions/XvMClib.h
5983 check_headers asm/types.h
5984
5985 # it seems there are versions of clang in some distros that try to use the
5986 # gcc headers, which explodes for stdatomic
5987 # so we also check that atomics actually work here
5988 check_builtin stdatomic stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0); foo += bar"
5989
5990 check_lib advapi32 "windows.h"            RegCloseKey          -ladvapi32
5991 check_lib bcrypt   "windows.h bcrypt.h"   BCryptGenRandom      -lbcrypt &&
5992     check_cpp_condition bcrypt bcrypt.h "defined BCRYPT_RNG_ALGORITHM"
5993 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
5994 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
5995 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
5996
5997 check_lib android android/native_window.h ANativeWindow_acquire -landroid
5998 check_lib mediandk "stdint.h media/NdkImage.h" AImage_delete -lmediandk
5999 check_lib camera2ndk "stdbool.h stdint.h camera/NdkCameraManager.h" ACameraManager_create -lcamera2ndk
6000
6001 enabled appkit       && check_apple_framework AppKit
6002 enabled audiotoolbox && check_apple_framework AudioToolbox
6003 enabled avfoundation && check_apple_framework AVFoundation
6004 enabled coreimage    && check_apple_framework CoreImage
6005 enabled videotoolbox && check_apple_framework VideoToolbox
6006
6007 check_apple_framework CoreFoundation
6008 check_apple_framework CoreMedia
6009 check_apple_framework CoreVideo
6010
6011 enabled avfoundation && {
6012     disable coregraphics applicationservices
6013     check_lib coregraphics        CoreGraphics/CoreGraphics.h               CGGetActiveDisplayList "-framework CoreGraphics" ||
6014     check_lib applicationservices ApplicationServices/ApplicationServices.h CGGetActiveDisplayList "-framework ApplicationServices"; }
6015
6016 enabled videotoolbox && {
6017     check_lib coreservices CoreServices/CoreServices.h UTGetOSTypeFromString "-framework CoreServices"
6018     check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_HEVC "-framework CoreMedia"
6019 }
6020
6021 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
6022
6023 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
6024 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
6025 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
6026 check_type "windows.h d3d11.h" "ID3D11VideoContext"
6027 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
6028
6029 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
6030 check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
6031 check_struct "va/va.h va/va_vpp.h" "VAProcPipelineCaps" rotation_flags
6032 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
6033 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
6034 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
6035 check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
6036
6037 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
6038
6039 if ! disabled ffnvcodec; then
6040     check_pkg_config ffnvcodec "ffnvcodec >= 8.1.24.2" \
6041           "ffnvcodec/nvEncodeAPI.h ffnvcodec/dynlink_cuda.h ffnvcodec/dynlink_cuviddec.h ffnvcodec/dynlink_nvcuvid.h" "" || \
6042       check_pkg_config ffnvcodec "ffnvcodec >= 8.0.14.2 ffnvcodec < 8.1" \
6043           "ffnvcodec/nvEncodeAPI.h ffnvcodec/dynlink_cuda.h ffnvcodec/dynlink_cuviddec.h ffnvcodec/dynlink_nvcuvid.h" ""
6044 fi
6045
6046 check_cpp_condition winrt windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)"
6047
6048 if ! disabled w32threads && ! enabled pthreads; then
6049     check_func_headers "windows.h process.h" _beginthreadex &&
6050         check_type "windows.h" CONDITION_VARIABLE &&
6051         check_type "windows.h" INIT_ONCE &&
6052         enable w32threads || disable w32threads
6053     if ! enabled w32threads && enabled winrt; then
6054         check_func_headers "windows.h" CreateThread &&
6055             enable w32threads || disable w32threads
6056     fi
6057 fi
6058
6059 # check for some common methods of building with pthread support
6060 # do this before the optional library checks as some of them require pthreads
6061 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
6062     if check_lib pthreads pthread.h pthread_join   -pthread &&
6063        check_lib pthreads pthread.h pthread_create -pthread; then
6064         add_cflags -pthread
6065     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
6066          check_lib pthreads pthread.h pthread_create -pthreads; then
6067         add_cflags -pthreads
6068     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
6069          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
6070         add_cflags -ldl -pthread
6071     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
6072          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
6073         :
6074     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
6075          check_lib pthreads pthread.h pthread_create -lpthread; then
6076         :
6077     elif check_func pthread_join && check_func pthread_create; then
6078         enable pthreads
6079     fi
6080     check_cc pthreads "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER"
6081
6082     if enabled pthreads; then
6083         check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
6084         check_func pthread_cancel $pthreads_extralibs
6085     fi
6086 fi
6087
6088 enabled  zlib && { check_pkg_config zlib zlib "zlib.h" zlibVersion ||
6089                    check_lib zlib   zlib.h      zlibVersion    -lz; }
6090 enabled bzlib && check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
6091 enabled  lzma && check_lib lzma   lzma.h lzma_version_number -llzma
6092
6093 # On some systems dynamic loading requires no extra linker flags
6094 check_lib libdl dlfcn.h "dlopen dlsym" || check_lib libdl dlfcn.h "dlopen dlsym" -ldl
6095
6096 check_lib libm math.h sin -lm
6097
6098 atan2f_args=2
6099 copysign_args=2
6100 hypot_args=2
6101 ldexpf_args=2
6102 powf_args=2
6103
6104 for func in $MATH_FUNCS; do
6105     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
6106 done
6107
6108 for func in $COMPLEX_FUNCS; do
6109     eval check_complexfunc $func \${${func}_args:-1}
6110 done
6111
6112 # these are off by default, so fail if requested and not available
6113 enabled cuda_nvcc         && { check_nvcc || die "ERROR: failed checking for nvcc."; }
6114 enabled cuda_sdk          && require cuda_sdk cuda.h cuCtxCreate -lcuda
6115 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
6116 enabled decklink          && { require_headers DeckLinkAPI.h &&
6117                                { test_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a090500" || die "ERROR: Decklink API version must be >= 10.9.5."; } }
6118 enabled libndi_newtek     && require_headers Processing.NDI.Lib.h
6119 enabled frei0r            && require_headers "frei0r.h dlfcn.h"
6120 enabled gmp               && require gmp gmp.h mpz_export -lgmp
6121 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
6122 enabled jni               && { [ $target_os = "android" ] && check_headers jni.h && enabled pthreads || die "ERROR: jni not found"; }
6123 enabled ladspa            && require_headers "ladspa.h dlfcn.h"
6124 enabled libaom            && require_pkg_config libaom "aom >= 1.0.0" aom/aom_codec.h aom_codec_version
6125 enabled libaribb24        && { check_pkg_config libaribb24 "aribb24 > 1.0.3" "aribb24/aribb24.h" arib_instance_new ||
6126                                { enabled gpl && require_pkg_config libaribb24 aribb24 "aribb24/aribb24.h" arib_instance_new; } ||
6127                                die "ERROR: libaribb24 requires version higher than 1.0.3 or --enable-gpl."; }
6128 enabled lv2               && require_pkg_config lv2 lilv-0 "lilv/lilv.h" lilv_world_new
6129 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
6130 enabled libass            && require_pkg_config libass libass ass/ass.h ass_library_init
6131 enabled libbluray         && require_pkg_config libbluray libbluray libbluray/bluray.h bd_open
6132 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
6133 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
6134                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
6135                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
6136 enabled libcaca           && require_pkg_config libcaca caca caca.h caca_create_canvas
6137 enabled libcodec2         && require libcodec2 codec2/codec2.h codec2_create -lcodec2
6138 enabled libdav1d          && require_pkg_config libdav1d "dav1d >= 0.1.0" "dav1d/dav1d.h" dav1d_version
6139 enabled libdavs2          && require_pkg_config libdavs2 "davs2 >= 1.6.0" davs2.h davs2_decoder_open
6140 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
6141 enabled libdrm            && require_pkg_config libdrm libdrm xf86drm.h drmGetVersion
6142 enabled libfdk_aac        && { check_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
6143                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
6144                                  warn "using libfdk without pkg-config"; } }
6145 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"
6146 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
6147 enabled fontconfig        && enable libfontconfig
6148 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
6149 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
6150 enabled libfribidi        && require_pkg_config libfribidi fribidi fribidi.h fribidi_version_info
6151 enabled libgme            && { check_pkg_config libgme libgme gme/gme.h gme_new_emu ||
6152                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }
6153 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
6154                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
6155                                done || die "ERROR: libgsm not found"; }
6156 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc $pthreads_extralibs
6157 enabled libklvanc         && require libklvanc libklvanc/vanc.h klvanc_context_create -lklvanc
6158 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
6159 enabled liblensfun        && require_pkg_config liblensfun lensfun lensfun.h lf_db_new
6160 # While it may appear that require is being used as a pkg-config
6161 # fallback for libmfx, it is actually being used to detect a different
6162 # installation route altogether.  If libmfx is installed via the Intel
6163 # Media SDK or Intel Media Server Studio, these don't come with
6164 # pkg-config support.  Instead, users should make sure that the build
6165 # can find the libraries and headers through other means.
6166 enabled libmfx            && { check_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit ||
6167                                { require libmfx "mfx/mfxvideo.h" MFXInit "-llibmfx $advapi32_extralibs" && warn "using libmfx without pkg-config"; } }
6168 enabled libmodplug        && require_pkg_config libmodplug libmodplug libmodplug/modplug.h ModPlug_Load
6169 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame $libm_extralibs
6170 enabled libmysofa         && { check_pkg_config libmysofa libmysofa mysofa.h mysofa_load ||
6171                                require libmysofa mysofa.h mysofa_load -lmysofa $zlib_extralibs; }
6172 enabled libnpp            && { check_lib libnpp npp.h nppGetLibVersion -lnppig -lnppicc -lnppc -lnppidei ||
6173                                check_lib libnpp npp.h nppGetLibVersion -lnppi -lnppc -lnppidei ||
6174                                die "ERROR: libnpp not found"; }
6175 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
6176 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
6177 enabled libopencv         && { check_headers opencv2/core/core_c.h &&
6178                                { check_pkg_config libopencv opencv opencv2/core/core_c.h cvCreateImageHeader ||
6179                                  require libopencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
6180                                require_pkg_config libopencv opencv opencv/cxcore.h cvCreateImageHeader; }
6181 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
6182 enabled libopenjpeg       && { check_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version ||
6183                                { require_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } }
6184 enabled libopenmpt        && require_pkg_config libopenmpt "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create -lstdc++ && append libopenmpt_extralibs "-lstdc++"
6185 enabled libopus           && {
6186     enabled libopus_decoder && {
6187         require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
6188     }
6189     enabled libopus_encoder && {
6190         require_pkg_config libopus opus opus_multistream.h opus_multistream_surround_encoder_create
6191     }
6192 }
6193 enabled libpulse          && require_pkg_config libpulse libpulse pulse/pulseaudio.h pa_context_new
6194 enabled librsvg           && require_pkg_config librsvg librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
6195 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
6196 enabled librubberband     && require_pkg_config librubberband "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new -lstdc++ && append librubberband_extralibs "-lstdc++"
6197 enabled libshine          && require_pkg_config libshine shine shine/layer3.h shine_encode_buffer
6198 enabled libsmbclient      && { check_pkg_config libsmbclient smbclient libsmbclient.h smbc_init ||
6199                                require libsmbclient libsmbclient.h smbc_init -lsmbclient; }
6200 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy -lstdc++
6201 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
6202 enabled libssh            && require_pkg_config libssh libssh libssh/sftp.h sftp_init
6203 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init
6204 enabled libsrt            && require_pkg_config libsrt "srt >= 1.3.0" srt/srt.h srt_socket
6205 enabled libtensorflow     && require libtensorflow tensorflow/c/c_api.h TF_Version -ltensorflow
6206 enabled libtesseract      && require_pkg_config libtesseract tesseract tesseract/capi.h TessBaseAPICreate
6207 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
6208 enabled libtls            && require_pkg_config libtls libtls tls.h tls_configure
6209 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
6210                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
6211                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
6212 enabled libv4l2           && require_pkg_config libv4l2 libv4l2 libv4l2.h v4l2_ioctl
6213 enabled libvidstab        && require_pkg_config libvidstab "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
6214 enabled libvmaf           && require_pkg_config libvmaf "libvmaf >= 1.3.9" libvmaf.h compute_vmaf
6215 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
6216 enabled libvorbis         && require_pkg_config libvorbis vorbis vorbis/codec.h vorbis_info_init &&
6217                              require_pkg_config libvorbisenc vorbisenc vorbis/vorbisenc.h vorbis_encode_init
6218
6219 enabled libvpx            && {
6220     enabled libvpx_vp8_decoder && {
6221         check_pkg_config libvpx_vp8_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
6222             check_lib libvpx_vp8_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_dec_init_ver VPX_IMG_FMT_HIGHBITDEPTH" -lvpx ||
6223                 die "ERROR: libvpx decoder version must be >=1.4.0";
6224     }
6225     enabled libvpx_vp8_encoder && {
6226         check_pkg_config libvpx_vp8_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
6227             check_lib libvpx_vp8_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VPX_IMG_FMT_HIGHBITDEPTH" -lvpx ||
6228                 die "ERROR: libvpx encoder version must be >=1.4.0";
6229     }
6230     enabled libvpx_vp9_decoder && {
6231         check_pkg_config libvpx_vp9_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
6232             check_lib libvpx_vp9_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx VPX_IMG_FMT_HIGHBITDEPTH" "-lvpx $libm_extralibs"
6233     }
6234     enabled libvpx_vp9_encoder && {
6235         check_pkg_config libvpx_vp9_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
6236             check_lib libvpx_vp9_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VPX_IMG_FMT_HIGHBITDEPTH" "-lvpx $libm_extralibs"
6237     }
6238     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
6239         die "libvpx enabled but no supported decoders found"
6240     fi
6241 }
6242
6243 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
6244 enabled libwebp           && {
6245     enabled libwebp_encoder      && require_pkg_config libwebp "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
6246     enabled libwebp_anim_encoder && check_pkg_config libwebp_anim_encoder "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit; }
6247 enabled libx264           && { check_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode ||
6248                                { require libx264 "stdint.h x264.h" x264_encoder_encode "-lx264 $pthreads_extralibs $libm_extralibs" &&
6249                                  warn "using libx264 without pkg-config"; } } &&
6250                              require_cpp_condition libx264 x264.h "X264_BUILD >= 118" &&
6251                              check_cpp_condition libx262 x264.h "X264_MPEG2"
6252 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
6253                              require_cpp_condition libx265 x265.h "X265_BUILD >= 68"
6254 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode "-lxavs $pthreads_extralibs $libm_extralibs"
6255 enabled libxavs2          && require_pkg_config libxavs2 "xavs2 >= 1.3.0" "stdint.h xavs2.h" xavs2_api_get
6256 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
6257 enabled libzimg           && require_pkg_config libzimg "zimg >= 2.7.0" zimg.h zimg_get_api_version
6258 enabled libzmq            && require_pkg_config libzmq libzmq zmq.h zmq_ctx_new
6259 enabled libzvbi           && require_pkg_config libzvbi zvbi-0.2 libzvbi.h vbi_decoder_new &&
6260                              { test_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
6261                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
6262 enabled libxml2           && require_pkg_config libxml2 libxml-2.0 libxml2/libxml/xmlversion.h xmlCheckVersion
6263 enabled mbedtls           && { check_pkg_config mbedtls mbedtls mbedtls/x509_crt.h mbedtls_x509_crt_init ||
6264                                check_pkg_config mbedtls mbedtls mbedtls/ssl.h mbedtls_ssl_init ||
6265                                check_lib mbedtls mbedtls/ssl.h mbedtls_ssl_init -lmbedtls -lmbedx509 -lmbedcrypto ||
6266                                die "ERROR: mbedTLS not found"; }
6267 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
6268 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
6269                                { ! enabled cross_compile &&
6270                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
6271                                  add_ldflags -L/opt/vc/lib/ &&
6272                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
6273                                die "ERROR: mmal not found" &&
6274                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
6275 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
6276                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
6277                                die "ERROR: openal not found"; } &&
6278                              { test_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
6279                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
6280 enabled opencl            && { check_pkg_config opencl OpenCL CL/cl.h clEnqueueNDRangeKernel ||
6281                                check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
6282                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
6283                                die "ERROR: opencl not found"; } &&
6284                              { test_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
6285                                test_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
6286                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
6287 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
6288                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
6289                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
6290                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
6291                                die "ERROR: opengl not found."
6292                              }
6293 enabled omx               && require_headers OMX_Core.h
6294 enabled omx_rpi           && { check_headers OMX_Core.h ||
6295                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_headers OMX_Core.h ; } ||
6296                                die "ERROR: OpenMAX IL headers not found"; } && enable omx
6297 enabled openssl           && { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
6298                                check_pkg_config openssl openssl openssl/ssl.h SSL_library_init ||
6299                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
6300                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
6301                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
6302                                die "ERROR: openssl not found"; }
6303 enabled rkmpp             && { require_pkg_config rkmpp rockchip_mpp  rockchip/rk_mpi.h mpp_create &&
6304                                require_pkg_config rockchip_mpp "rockchip_mpp >= 1.3.7" rockchip/rk_mpi.h mpp_create &&
6305                                { enabled libdrm ||
6306                                  die "ERROR: rkmpp requires --enable-libdrm"; }
6307                              }
6308 enabled vapoursynth       && require_pkg_config vapoursynth "vapoursynth-script >= 42" VSScript.h vsscript_init
6309
6310
6311 if enabled gcrypt; then
6312     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
6313     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
6314         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
6315         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
6316         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
6317             die "ERROR: gcrypt not found"
6318         add_cflags $gcrypt_cflags
6319     else
6320         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
6321     fi
6322 fi
6323
6324 if enabled sdl2; then
6325     SDL2_CONFIG="${cross_prefix}sdl2-config"
6326     test_pkg_config sdl2 "sdl2 >= 2.0.1 sdl2 < 2.1.0" SDL_events.h SDL_PollEvent
6327     if disabled sdl2 && "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6328         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6329         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6330         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6331         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6332         check_func_headers SDL_events.h SDL_PollEvent $sdl2_extralibs $sdl2_cflags &&
6333             enable sdl2
6334     fi
6335     if test $target_os = "mingw32"; then
6336         sdl2_extralibs=$(filter_out '-mwindows' $sdl2_extralibs)
6337     fi
6338 fi
6339
6340 if enabled decklink; then
6341     case $target_os in
6342         mingw32*|mingw64*|win32|win64)
6343             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6344             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6345             ;;
6346     esac
6347 fi
6348
6349 enabled securetransport &&
6350     check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6351     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" ||
6352         disable securetransport
6353
6354 enabled securetransport &&
6355     check_func SecItemImport "-Wl,-framework,CoreFoundation -Wl,-framework,Security"
6356
6357 enabled schannel &&
6358     check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6359     test_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" &&
6360     schannel_extralibs="-lsecur32" ||
6361         disable schannel
6362
6363 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6364 enabled makeinfo \
6365     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6366     && enable makeinfo_html || disable makeinfo_html
6367 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6368 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6369 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6370 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6371
6372 # check V4L2 codecs available in the API
6373 check_headers linux/fb.h
6374 check_headers linux/videodev2.h
6375 test_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6376 check_cc v4l2_m2m linux/videodev2.h "int i = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_VIDEO_M2M | V4L2_BUF_FLAG_LAST;"
6377 check_cc vc1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VC1_ANNEX_G;"
6378 check_cc mpeg1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG1;"
6379 check_cc mpeg2_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG2;"
6380 check_cc mpeg4_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG4;"
6381 check_cc hevc_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_HEVC;"
6382 check_cc h263_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H263;"
6383 check_cc h264_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H264;"
6384 check_cc vp8_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP8;"
6385 check_cc vp9_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP9;"
6386
6387 check_headers sys/videoio.h
6388 test_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6389
6390 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6391 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6392 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6393 # w32api 3.12 had it defined wrong
6394 check_cpp_condition vfwcap_defines vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER"
6395
6396 check_type "dshow.h" IBaseFilter
6397
6398 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6399 check_headers "dev/bktr/ioctl_meteor.h dev/bktr/ioctl_bt848.h"                   ||
6400     check_headers "machine/ioctl_meteor.h machine/ioctl_bt848.h"                 ||
6401     check_headers "dev/video/meteor/ioctl_meteor.h dev/video/bktr/ioctl_bt848.h" ||
6402     check_headers "dev/ic/bt8xx.h"
6403
6404 if check_struct sys/soundcard.h audio_buf_info bytes; then
6405     enable_sanitized sys/soundcard.h
6406 else
6407     test_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_sanitized sys/soundcard.h
6408     #include <sys/soundcard.h>
6409     audio_buf_info abc;
6410 EOF
6411 fi
6412
6413 enabled alsa && check_pkg_config alsa alsa "alsa/asoundlib.h" snd_pcm_htimestamp ||
6414     check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
6415
6416 enabled libjack &&
6417     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
6418
6419 enabled sndio && check_lib sndio sndio.h sio_open -lsndio
6420
6421 if enabled libcdio; then
6422     check_pkg_config libcdio libcdio_paranoia "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open ||
6423     check_pkg_config libcdio libcdio_paranoia "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open ||
6424     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6425     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6426     die "ERROR: No usable libcdio/cdparanoia found"
6427 fi
6428
6429 enabled libxcb && check_pkg_config libxcb "xcb >= 1.4" xcb/xcb.h xcb_connect ||
6430     disable libxcb_shm libxcb_shape libxcb_xfixes
6431
6432 if enabled libxcb; then
6433     enabled libxcb_shm    && check_pkg_config libxcb_shm    xcb-shm    xcb/shm.h    xcb_shm_attach
6434     enabled libxcb_shape  && check_pkg_config libxcb_shape  xcb-shape  xcb/shape.h  xcb_shape_get_rectangles
6435     enabled libxcb_xfixes && check_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
6436 fi
6437
6438 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6439
6440 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6441 # the desktop api partition
6442 test_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
6443 #ifdef WINAPI_FAMILY
6444 #include <winapifamily.h>
6445 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
6446 #error desktop, not uwp
6447 #else
6448 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
6449 #endif
6450 #else
6451 #error no family set
6452 #endif
6453 EOF
6454
6455 enabled vaapi &&
6456     check_pkg_config vaapi "libva >= 0.35.0" "va/va.h" vaInitialize
6457
6458 if enabled vaapi; then
6459     check_pkg_config vaapi_drm "libva-drm" "va/va_drm.h" vaGetDisplayDRM
6460
6461     if enabled xlib; then
6462         check_pkg_config vaapi_x11 "libva-x11" "va/va_x11.h" vaGetDisplay
6463     fi
6464
6465     check_cpp_condition vaapi_1 "va/va.h" "VA_CHECK_VERSION(1, 0, 0)"
6466 fi
6467
6468 if enabled_all opencl libdrm ; then
6469     check_type "CL/cl_intel.h" "clCreateImageFromFdINTEL_fn" &&
6470         enable opencl_drm_beignet
6471     check_func_headers "CL/cl_ext.h" clImportMemoryARM &&
6472         enable opencl_drm_arm
6473 fi
6474
6475 if enabled_all opencl vaapi ; then
6476     enabled opencl_drm_beignet && enable opencl_vaapi_beignet
6477     check_type "CL/cl.h CL/va_ext.h" "clCreateFromVA_APIMediaSurfaceINTEL_fn" &&
6478         enable opencl_vaapi_intel_media
6479 fi
6480
6481 if enabled_all opencl dxva2 ; then
6482     check_type "CL/cl_dx9_media_sharing.h" cl_dx9_surface_info_khr &&
6483         enable opencl_dxva2
6484 fi
6485
6486 if enabled_all opencl d3d11va ; then
6487     check_type "CL/cl_d3d11.h" clGetDeviceIDsFromD3D11KHR_fn &&
6488         enable opencl_d3d11
6489 fi
6490
6491 enabled vdpau &&
6492     check_cpp_condition vdpau vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP"
6493
6494 enabled vdpau &&
6495     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6496
6497 enabled crystalhd && check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
6498
6499 if enabled x86; then
6500     case $target_os in
6501         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6502             ;;
6503         *)
6504             disable ffnvcodec cuvid nvdec nvenc
6505             ;;
6506     esac
6507 else
6508     disable ffnvcodec cuvid nvdec nvenc
6509 fi
6510
6511 enabled ffnvcodec && enable cuda
6512
6513 enabled nvenc &&
6514     test_cc -I$source_path <<EOF || disable nvenc
6515 #include <ffnvcodec/nvEncodeAPI.h>
6516 NV_ENCODE_API_FUNCTION_LIST flist;
6517 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6518 int main(void) { return 0; }
6519 EOF
6520
6521 enabled amf &&
6522     check_cpp_condition amf "AMF/core/Version.h" \
6523         "(AMF_VERSION_MAJOR << 48 | AMF_VERSION_MINOR << 32 | AMF_VERSION_RELEASE << 16 | AMF_VERSION_BUILD_NUM) >= 0x0001000400040001"
6524
6525 # Funny iconv installations are not unusual, so check it after all flags have been set
6526 if enabled libc_iconv; then
6527     check_func_headers iconv.h iconv
6528 elif enabled iconv; then
6529     check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6530 fi
6531
6532 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6533
6534 # add some useful compiler flags if supported
6535 check_cflags -Wdeclaration-after-statement
6536 check_cflags -Wall
6537 check_cflags -Wdisabled-optimization
6538 check_cflags -Wpointer-arith
6539 check_cflags -Wredundant-decls
6540 check_cflags -Wwrite-strings
6541 check_cflags -Wtype-limits
6542 check_cflags -Wundef
6543 check_cflags -Wmissing-prototypes
6544 check_cflags -Wno-pointer-to-int-cast
6545 check_cflags -Wstrict-prototypes
6546 check_cflags -Wempty-body
6547
6548 if enabled extra_warnings; then
6549     check_cflags -Wcast-qual
6550     check_cflags -Wextra
6551     check_cflags -Wpedantic
6552 fi
6553
6554 check_disable_warning(){
6555     warning_flag=-W${1#-Wno-}
6556     test_cflags $unknown_warning_flags $warning_flag && add_cflags $1
6557 }
6558
6559 test_cflags -Werror=unused-command-line-argument &&
6560     append unknown_warning_flags "-Werror=unused-command-line-argument"
6561 test_cflags -Werror=unknown-warning-option &&
6562     append unknown_warning_flags "-Werror=unknown-warning-option"
6563
6564 check_disable_warning -Wno-parentheses
6565 check_disable_warning -Wno-switch
6566 check_disable_warning -Wno-format-zero-length
6567 check_disable_warning -Wno-pointer-sign
6568 check_disable_warning -Wno-unused-const-variable
6569 check_disable_warning -Wno-bool-operation
6570 check_disable_warning -Wno-char-subscripts
6571
6572 check_disable_warning_headers(){
6573     warning_flag=-W${1#-Wno-}
6574     test_cflags $warning_flag && add_cflags_headers $1
6575 }
6576
6577 check_disable_warning_headers -Wno-deprecated-declarations
6578 check_disable_warning_headers -Wno-unused-variable
6579
6580 test_cc <<EOF && enable blocks_extension
6581 void (^block)(void);
6582 EOF
6583
6584 # add some linker flags
6585 check_ldflags -Wl,--warn-common
6586 check_ldflags -Wl,-rpath-link=:libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6587 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir && add_ldsoflags -Wl,-rpath,$libdir
6588 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6589
6590 # add some strip flags
6591 check_stripflags -x
6592
6593 enabled neon_clobber_test &&
6594     check_ldflags -Wl,--wrap,avcodec_open2              \
6595                   -Wl,--wrap,avcodec_decode_audio4      \
6596                   -Wl,--wrap,avcodec_decode_video2      \
6597                   -Wl,--wrap,avcodec_decode_subtitle2   \
6598                   -Wl,--wrap,avcodec_encode_audio2      \
6599                   -Wl,--wrap,avcodec_encode_video2      \
6600                   -Wl,--wrap,avcodec_encode_subtitle    \
6601                   -Wl,--wrap,avcodec_send_packet        \
6602                   -Wl,--wrap,avcodec_receive_packet     \
6603                   -Wl,--wrap,avcodec_send_frame         \
6604                   -Wl,--wrap,avcodec_receive_frame      \
6605                   -Wl,--wrap,swr_convert                \
6606                   -Wl,--wrap,avresample_convert ||
6607     disable neon_clobber_test
6608
6609 enabled xmm_clobber_test &&
6610     check_ldflags -Wl,--wrap,avcodec_open2              \
6611                   -Wl,--wrap,avcodec_decode_audio4      \
6612                   -Wl,--wrap,avcodec_decode_video2      \
6613                   -Wl,--wrap,avcodec_decode_subtitle2   \
6614                   -Wl,--wrap,avcodec_encode_audio2      \
6615                   -Wl,--wrap,avcodec_encode_video2      \
6616                   -Wl,--wrap,avcodec_encode_subtitle    \
6617                   -Wl,--wrap,avcodec_send_packet        \
6618                   -Wl,--wrap,avcodec_receive_packet     \
6619                   -Wl,--wrap,avcodec_send_frame         \
6620                   -Wl,--wrap,avcodec_receive_frame      \
6621                   -Wl,--wrap,swr_convert                \
6622                   -Wl,--wrap,avresample_convert         \
6623                   -Wl,--wrap,sws_scale ||
6624     disable xmm_clobber_test
6625
6626 check_ld "cc" proper_dce <<EOF
6627 extern const int array[512];
6628 static inline int func(void) { return array[0]; }
6629 int main(void) { return 0; }
6630 EOF
6631
6632 if enabled proper_dce; then
6633     echo "X { local: *; };" > $TMPV
6634     if test_ldflags -Wl,${version_script},$TMPV; then
6635         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6636         quotes='""'
6637         test_cc <<EOF && enable symver_asm_label
6638 void ff_foo(void) __asm__ ("av_foo@VERSION");
6639 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6640 EOF
6641         test_cc <<EOF && enable symver_gnu_asm
6642 __asm__(".symver ff_foo,av_foo@VERSION");
6643 void ff_foo(void) {}
6644 EOF
6645     fi
6646 fi
6647
6648 if [ -z "$optflags" ]; then
6649     if enabled small; then
6650         optflags=$cflags_size
6651     elif enabled optimizations; then
6652         optflags=$cflags_speed
6653     else
6654         optflags=$cflags_noopt
6655     fi
6656 fi
6657
6658 if [ -z "$nvccflags" ]; then
6659     nvccflags=$nvccflags_default
6660 fi
6661
6662 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6663     nvccflags="$nvccflags -m64"
6664 else
6665     nvccflags="$nvccflags -m32"
6666 fi
6667
6668 check_optflags(){
6669     check_cflags "$@"
6670     enabled lto && check_ldflags "$@"
6671 }
6672
6673 check_optflags $optflags
6674 check_optflags -fno-math-errno
6675 check_optflags -fno-signed-zeros
6676
6677 if enabled lto; then
6678     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6679     check_cflags  -flto
6680     check_ldflags -flto $cpuflags
6681     disable inline_asm_direct_symbol_refs
6682 fi
6683
6684 enabled ftrapv && check_cflags -ftrapv
6685
6686 test_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6687 int x;
6688 EOF
6689
6690
6691 if enabled icc; then
6692     # Just warnings, no remarks
6693     check_cflags -w1
6694     # -wd: Disable following warnings
6695     # 144, 167, 556: -Wno-pointer-sign
6696     # 188: enumerated type mixed with another type
6697     # 1292: attribute "foo" ignored
6698     # 1419: external declaration in primary source file
6699     # 10006: ignoring unknown option -fno-signed-zeros
6700     # 10148: ignoring unknown option -Wno-parentheses
6701     # 10156: ignoring option '-W'; no argument required
6702     # 13200: No EMMS instruction before call to function
6703     # 13203: No EMMS instruction before return from function
6704     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6705     # 11030: Warning unknown option --as-needed
6706     # 10156: ignoring option '-export'; no argument required
6707     check_ldflags -wd10156,11030
6708     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6709     enable ebp_available
6710     # The test above does not test linking
6711     enabled lto && disable symver_asm_label
6712     if enabled x86_32; then
6713         icc_version=$($cc -dumpversion)
6714         test ${icc_version%%.*} -ge 11 &&
6715             check_cflags -falign-stack=maintain-16-byte ||
6716             disable aligned_stack
6717     fi
6718 elif enabled gcc; then
6719     check_optflags -fno-tree-vectorize
6720     check_cflags -Werror=format-security
6721     check_cflags -Werror=implicit-function-declaration
6722     check_cflags -Werror=missing-prototypes
6723     check_cflags -Werror=return-type
6724     check_cflags -Werror=vla
6725     check_cflags -Wformat
6726     check_cflags -fdiagnostics-color=auto
6727     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6728     if enabled x86_32; then
6729         case $target_os in
6730         *bsd*)
6731             # BSDs don't guarantee a 16 byte aligned stack, but we can
6732             # request GCC to try to maintain 16 byte alignment throughout
6733             # function calls. Library entry points that might call assembly
6734             # functions align the stack. (The parameter means 2^4 bytes.)
6735             check_cflags -mpreferred-stack-boundary=4
6736             ;;
6737         esac
6738     fi
6739 elif enabled llvm_gcc; then
6740     check_cflags -mllvm -stack-alignment=16
6741 elif enabled clang; then
6742     if enabled x86_32; then
6743         # Clang doesn't support maintaining alignment without assuming the
6744         # same alignment in every function. If 16 byte alignment would be
6745         # enabled, one would also have to either add attribute_align_arg on
6746         # every single entry point into the libraries or enable -mstackrealign
6747         # (doing stack realignment in every single function).
6748         case $target_os in
6749         mingw32|win32|*bsd*)
6750             disable aligned_stack
6751             ;;
6752         *)
6753             check_cflags -mllvm -stack-alignment=16
6754             check_cflags -mstack-alignment=16
6755             ;;
6756         esac
6757     else
6758         check_cflags -mllvm -stack-alignment=16
6759         check_cflags -mstack-alignment=16
6760     fi
6761     check_cflags -Qunused-arguments
6762     check_cflags -Werror=implicit-function-declaration
6763     check_cflags -Werror=missing-prototypes
6764     check_cflags -Werror=return-type
6765 elif enabled cparser; then
6766     add_cflags -Wno-missing-variable-declarations
6767     add_cflags -Wno-empty-statement
6768 elif enabled armcc; then
6769     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6770     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6771     # 2523: use of inline assembly is deprecated
6772     add_cflags -W${armcc_opt},--diag_suppress=2523
6773     add_cflags -W${armcc_opt},--diag_suppress=1207
6774     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6775     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6776     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6777     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6778 elif enabled pathscale; then
6779     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6780     disable inline_asm
6781 elif enabled_any msvc icl; then
6782     enabled x86_32 && disable aligned_stack
6783     enabled_all x86_32 debug && add_cflags -Oy-
6784     enabled debug && add_ldflags -debug
6785     enable pragma_deprecated
6786     if enabled icl; then
6787         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6788         # (correctly) on icl 13.x.
6789         test_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6790             add_cflags -Qansi-alias
6791         # Some inline asm is not compilable in debug
6792         if enabled debug; then
6793             disable ebp_available
6794             disable ebx_available
6795         fi
6796     fi
6797     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6798     check_cpp_condition log2 crtversion.h "_VC_CRT_MAJOR_VERSION >= 12"
6799     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6800     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6801     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6802     # MSVC 2013 and newer can handle it fine.
6803     # If this declspec fails, force including stdlib.h before the restrict redefinition
6804     # happens in config.h.
6805     if [ $restrict_keyword != restrict ]; then
6806         test_cc <<EOF || add_cflags -FIstdlib.h
6807 __declspec($restrict_keyword) void *foo(int);
6808 EOF
6809     fi
6810     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6811     # Issue has been fixed in MSVC v19.00.24218.
6812     test_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6813         check_cflags -d2SSAOptimizer-
6814     # enable utf-8 source processing on VS2015 U2 and newer
6815     test_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6816         add_cflags -utf-8
6817 fi
6818
6819 for pfx in "" host_; do
6820     varname=${pfx%_}cc_type
6821     eval "type=\$$varname"
6822     if [ "$type" = "msvc" ]; then
6823         test_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6824 static inline int foo(int a) { return a; }
6825 EOF
6826     fi
6827 done
6828
6829 case $as_type in
6830     clang)
6831         add_asflags -Qunused-arguments
6832     ;;
6833 esac
6834
6835 case $ld_type in
6836     clang)
6837         check_ldflags -Qunused-arguments
6838     ;;
6839 esac
6840
6841 enable frame_thread_encoder
6842
6843 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6844
6845 check_deps $CONFIG_LIST       \
6846            $CONFIG_EXTRA      \
6847            $HAVE_LIST         \
6848            $ALL_COMPONENTS    \
6849
6850 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"
6851 enabled avresample && warn "Building with deprecated library libavresample"
6852
6853 case $target_os in
6854 haiku)
6855     disable memalign
6856     disable posix_memalign
6857     ;;
6858 *-dos|freedos|opendos)
6859     if test_cpp_condition sys/version.h "defined(__DJGPP__) && __DJGPP__ == 2 && __DJGPP_MINOR__ == 5"; then
6860         disable memalign
6861     fi
6862     ;;
6863 esac
6864
6865 flatten_extralibs(){
6866     nested_entries=
6867     list_name=$1
6868     eval list=\$${1}
6869     for entry in $list; do
6870         entry_copy=$entry
6871         resolve entry_copy
6872         flat_entries=
6873         for e in $entry_copy; do
6874             case $e in
6875                 *_extralibs) nested_entries="$nested_entries$e ";;
6876                           *) flat_entries="$flat_entries$e ";;
6877             esac
6878         done
6879         eval $entry="\$flat_entries"
6880     done
6881     append $list_name "$nested_entries"
6882
6883     resolve nested_entries
6884     if test -n "$(filter '*_extralibs' $nested_entries)"; then
6885         flatten_extralibs $list_name
6886     fi
6887 }
6888
6889 flatten_extralibs_wrapper(){
6890     list_name=$1
6891     flatten_extralibs $list_name
6892     unique $list_name
6893     resolve $list_name
6894     eval $list_name=\$\(\$ldflags_filter \$$list_name\)
6895     eval printf \''%s'\' \""\$$list_name"\"
6896 }
6897
6898 for linkunit in $LIBRARY_LIST; do
6899     unset current_extralibs
6900     eval components=\$$(toupper ${linkunit})_COMPONENTS_LIST
6901     for comp in ${components}; do
6902         enabled $comp || continue
6903         comp_extralibs="${comp}_extralibs"
6904         append current_extralibs $comp_extralibs
6905     done
6906     eval prepend ${linkunit}_extralibs $current_extralibs
6907 done
6908
6909 for linkunit in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
6910     eval ${linkunit}_extralibs=\$\(flatten_extralibs_wrapper ${linkunit}_extralibs\)
6911 done
6912
6913 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6914
6915 for thread in $THREADS_LIST; do
6916     if enabled $thread; then
6917         test -n "$thread_type" &&
6918             die "ERROR: Only one thread type must be selected." ||
6919             thread_type="$thread"
6920     fi
6921 done
6922
6923 if disabled stdatomic; then
6924     if enabled atomics_gcc; then
6925         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6926     elif enabled atomics_win32; then
6927         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6928     elif enabled atomics_suncc; then
6929         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6930     elif enabled pthreads; then
6931         add_compat atomics/pthread/stdatomic.o
6932         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6933     else
6934         enabled threads && die "Threading is enabled, but no atomics are available"
6935         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6936     fi
6937 fi
6938
6939 # Check if requested libraries were found.
6940 for lib in $AUTODETECT_LIBS; do
6941     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6942 done
6943
6944 enabled zlib && add_cppflags -DZLIB_CONST
6945
6946 # conditional library dependencies, in any order
6947 enabled afftdn_filter       && prepend avfilter_deps "avcodec"
6948 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6949 enabled afir_filter         && prepend avfilter_deps "avcodec"
6950 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6951 enabled aresample_filter    && prepend avfilter_deps "swresample"
6952 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6953 enabled bm3d_filter         && prepend avfilter_deps "avcodec"
6954 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6955 enabled convolve_filter     && prepend avfilter_deps "avcodec"
6956 enabled deconvolve_filter   && prepend avfilter_deps "avcodec"
6957 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6958 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6959 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6960 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6961 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
6962 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6963 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6964 enabled pan_filter          && prepend avfilter_deps "swresample"
6965 enabled pp_filter           && prepend avfilter_deps "postproc"
6966 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6967 enabled resample_filter && prepend avfilter_deps "avresample"
6968 enabled sab_filter          && prepend avfilter_deps "swscale"
6969 enabled scale_filter    && prepend avfilter_deps "swscale"
6970 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6971 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6972 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6973 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6974 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6975 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
6976 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6977 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6978 enabled spp_filter          && prepend avfilter_deps "avcodec"
6979 enabled sr_filter           && prepend avfilter_deps "avformat swscale"
6980 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6981 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6982 enabled zoompan_filter      && prepend avfilter_deps "swscale"
6983
6984 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6985
6986 #FIXME
6987 enabled_any sdl2_outdev opengl_outdev && enabled sdl2 &&
6988     add_cflags $(filter_out '-Dmain=SDL_main' $sdl2_cflags)
6989
6990 enabled opus_decoder    && prepend avcodec_deps "swresample"
6991
6992 # reorder the items at var $1 to align with the items order at var $2 .
6993 # die if an item at $1 is not at $2 .
6994 reorder_by(){
6995     eval rb_in=\$$1
6996     eval rb_ordered=\$$2
6997
6998     for rb in $rb_in; do
6999         is_in $rb $rb_ordered || die "$rb at \$$1 is not at \$$2"
7000     done
7001
7002     rb_out=
7003     for rb in $rb_ordered; do
7004         is_in $rb $rb_in && rb_out="$rb_out$rb "
7005     done
7006     eval $1=\$rb_out
7007 }
7008
7009 # deps-expand fflib $1:  N x {append all expanded deps; unique}
7010 # within a set of N items, N expansions are enough to expose a cycle.
7011 expand_deps(){
7012     unique ${1}_deps  # required for the early break test.
7013     for dummy in $LIBRARY_LIST; do  # N iteratios
7014         eval deps=\$${1}_deps
7015         append ${1}_deps $(map 'eval echo \$${v}_deps' $deps)
7016         unique ${1}_deps
7017         eval '[ ${#deps} = ${#'${1}_deps'} ]' && break  # doesn't expand anymore
7018     done
7019
7020     eval is_in $1 \$${1}_deps && die "Dependency cycle at ${1}_deps"
7021     reorder_by ${1}_deps LIBRARY_LIST  # linking order is expected later
7022 }
7023
7024 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
7025 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
7026
7027 map 'expand_deps $v' $LIBRARY_LIST
7028
7029 if test "$quiet" != "yes"; then
7030
7031 echo "install prefix            $prefix"
7032 echo "source path               $source_path"
7033 echo "C compiler                $cc"
7034 echo "C library                 $libc_type"
7035 if test "$host_cc" != "$cc"; then
7036     echo "host C compiler           $host_cc"
7037     echo "host C library            $host_libc_type"
7038 fi
7039 echo "ARCH                      $arch ($cpu)"
7040 if test "$build_suffix" != ""; then
7041     echo "build suffix              $build_suffix"
7042 fi
7043 if test "$progs_suffix" != ""; then
7044     echo "progs suffix              $progs_suffix"
7045 fi
7046 if test "$extra_version" != ""; then
7047     echo "version string suffix     $extra_version"
7048 fi
7049 echo "big-endian                ${bigendian-no}"
7050 echo "runtime cpu detection     ${runtime_cpudetect-no}"
7051 if enabled x86; then
7052     echo "standalone assembly       ${x86asm-no}"
7053     echo "x86 assembler             ${x86asmexe}"
7054     echo "MMX enabled               ${mmx-no}"
7055     echo "MMXEXT enabled            ${mmxext-no}"
7056     echo "3DNow! enabled            ${amd3dnow-no}"
7057     echo "3DNow! extended enabled   ${amd3dnowext-no}"
7058     echo "SSE enabled               ${sse-no}"
7059     echo "SSSE3 enabled             ${ssse3-no}"
7060     echo "AESNI enabled             ${aesni-no}"
7061     echo "AVX enabled               ${avx-no}"
7062     echo "AVX2 enabled              ${avx2-no}"
7063     echo "AVX-512 enabled           ${avx512-no}"
7064     echo "XOP enabled               ${xop-no}"
7065     echo "FMA3 enabled              ${fma3-no}"
7066     echo "FMA4 enabled              ${fma4-no}"
7067     echo "i686 features enabled     ${i686-no}"
7068     echo "CMOV is fast              ${fast_cmov-no}"
7069     echo "EBX available             ${ebx_available-no}"
7070     echo "EBP available             ${ebp_available-no}"
7071 fi
7072 if enabled aarch64; then
7073     echo "NEON enabled              ${neon-no}"
7074     echo "VFP enabled               ${vfp-no}"
7075 fi
7076 if enabled arm; then
7077     echo "ARMv5TE enabled           ${armv5te-no}"
7078     echo "ARMv6 enabled             ${armv6-no}"
7079     echo "ARMv6T2 enabled           ${armv6t2-no}"
7080     echo "VFP enabled               ${vfp-no}"
7081     echo "NEON enabled              ${neon-no}"
7082     echo "THUMB enabled             ${thumb-no}"
7083 fi
7084 if enabled mips; then
7085     echo "MIPS FPU enabled          ${mipsfpu-no}"
7086     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
7087     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
7088     echo "MIPS MSA enabled          ${msa-no}"
7089     echo "LOONGSON MMI enabled      ${mmi-no}"
7090 fi
7091 if enabled ppc; then
7092     echo "AltiVec enabled           ${altivec-no}"
7093     echo "VSX enabled               ${vsx-no}"
7094     echo "POWER8 enabled            ${power8-no}"
7095     echo "PPC 4xx optimizations     ${ppc4xx-no}"
7096     echo "dcbzl available           ${dcbzl-no}"
7097 fi
7098 echo "debug symbols             ${debug-no}"
7099 echo "strip symbols             ${stripping-no}"
7100 echo "optimize for size         ${small-no}"
7101 echo "optimizations             ${optimizations-no}"
7102 echo "static                    ${static-no}"
7103 echo "shared                    ${shared-no}"
7104 echo "postprocessing support    ${postproc-no}"
7105 echo "network support           ${network-no}"
7106 echo "threading support         ${thread_type-no}"
7107 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
7108 echo "texi2html enabled         ${texi2html-no}"
7109 echo "perl enabled              ${perl-no}"
7110 echo "pod2man enabled           ${pod2man-no}"
7111 echo "makeinfo enabled          ${makeinfo-no}"
7112 echo "makeinfo supports HTML    ${makeinfo_html-no}"
7113 test -n "$random_seed" &&
7114     echo "random seed               ${random_seed}"
7115 echo
7116
7117 echo "External libraries:"
7118 print_enabled '' $EXTERNAL_LIBRARY_LIST $EXTERNAL_AUTODETECT_LIBRARY_LIST | print_in_columns
7119 echo
7120
7121 echo "External libraries providing hardware acceleration:"
7122 print_enabled '' $HWACCEL_LIBRARY_LIST $HWACCEL_AUTODETECT_LIBRARY_LIST | print_in_columns
7123 echo
7124
7125 echo "Libraries:"
7126 print_enabled '' $LIBRARY_LIST | print_in_columns
7127 echo
7128
7129 echo "Programs:"
7130 print_enabled '' $PROGRAM_LIST | print_in_columns
7131 echo
7132
7133 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
7134     echo "Enabled ${type}s:"
7135     eval list=\$$(toupper $type)_LIST
7136     print_enabled '_*' $list | print_in_columns
7137     echo
7138 done
7139
7140 if test -n "$ignore_tests"; then
7141     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
7142     echo "Ignored FATE tests:"
7143     echo $ignore_tests | print_in_columns
7144     echo
7145 fi
7146
7147 echo "License: $license"
7148
7149 fi # test "$quiet" != "yes"
7150
7151 if test -n "$WARN_IF_GETS_DISABLED_LIST"; then
7152     for cfg in $WARN_IF_GETS_DISABLED_LIST; do
7153         if disabled $cfg; then
7154             varname=${cfg}_disable_reason
7155             eval "warn \"Disabled $cfg because \$$varname\""
7156         fi
7157     done
7158 fi
7159
7160 if test -n "$WARNINGS"; then
7161     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
7162     enabled fatal_warnings && exit 1
7163 fi
7164
7165 test -e Makefile || echo "include $source_path/Makefile" > Makefile
7166
7167 esc(){
7168     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
7169 }
7170
7171 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
7172
7173 enabled stripping || strip="echo skipping strip"
7174 enabled stripping || striptype=""
7175
7176 config_files="$TMPH ffbuild/config.mak doc/config.texi"
7177
7178 cat > ffbuild/config.mak <<EOF
7179 # Automatically generated by configure - do not modify!
7180 ifndef FFMPEG_CONFIG_MAK
7181 FFMPEG_CONFIG_MAK=1
7182 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
7183 prefix=$prefix
7184 LIBDIR=\$(DESTDIR)$libdir
7185 SHLIBDIR=\$(DESTDIR)$shlibdir
7186 INCDIR=\$(DESTDIR)$incdir
7187 BINDIR=\$(DESTDIR)$bindir
7188 DATADIR=\$(DESTDIR)$datadir
7189 DOCDIR=\$(DESTDIR)$docdir
7190 MANDIR=\$(DESTDIR)$mandir
7191 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
7192 INSTALL_NAME_DIR=$install_name_dir
7193 SRC_PATH=$source_path
7194 SRC_LINK=$source_link
7195 ifndef MAIN_MAKEFILE
7196 SRC_PATH:=\$(SRC_PATH:.%=..%)
7197 endif
7198 CC_IDENT=$cc_ident
7199 ARCH=$arch
7200 INTRINSICS=$intrinsics
7201 EXTERN_PREFIX=$extern_prefix
7202 CC=$cc
7203 CXX=$cxx
7204 AS=$as
7205 OBJCC=$objcc
7206 LD=$ld
7207 DEPCC=$dep_cc
7208 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
7209 DEPAS=$as
7210 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
7211 X86ASM=$x86asmexe
7212 DEPX86ASM=$x86asmexe
7213 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
7214 AR=$ar
7215 ARFLAGS=$arflags
7216 AR_O=$ar_o
7217 AR_CMD=$ar
7218 NM_CMD=$nm
7219 RANLIB=$ranlib
7220 STRIP=$strip
7221 STRIPTYPE=$striptype
7222 NVCC=$nvcc
7223 CP=cp -p
7224 LN_S=$ln_s
7225 CPPFLAGS=$CPPFLAGS
7226 CFLAGS=$CFLAGS
7227 CXXFLAGS=$CXXFLAGS
7228 OBJCFLAGS=$OBJCFLAGS
7229 ASFLAGS=$ASFLAGS
7230 NVCCFLAGS=$nvccflags
7231 AS_C=$AS_C
7232 AS_O=$AS_O
7233 OBJCC_C=$OBJCC_C
7234 OBJCC_E=$OBJCC_E
7235 OBJCC_O=$OBJCC_O
7236 CC_C=$CC_C
7237 CC_E=$CC_E
7238 CC_O=$CC_O
7239 CXX_C=$CXX_C
7240 CXX_O=$CXX_O
7241 NVCC_C=$NVCC_C
7242 NVCC_O=$NVCC_O
7243 LD_O=$LD_O
7244 X86ASM_O=$X86ASM_O
7245 LD_LIB=$LD_LIB
7246 LD_PATH=$LD_PATH
7247 DLLTOOL=$dlltool
7248 WINDRES=$windres
7249 DEPWINDRES=$dep_cc
7250 DOXYGEN=$doxygen
7251 LDFLAGS=$LDFLAGS
7252 LDEXEFLAGS=$LDEXEFLAGS
7253 LDSOFLAGS=$LDSOFLAGS
7254 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
7255 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
7256 X86ASMFLAGS=$X86ASMFLAGS
7257 BUILDSUF=$build_suffix
7258 PROGSSUF=$progs_suffix
7259 FULLNAME=$FULLNAME
7260 LIBPREF=$LIBPREF
7261 LIBSUF=$LIBSUF
7262 LIBNAME=$LIBNAME
7263 SLIBPREF=$SLIBPREF
7264 SLIBSUF=$SLIBSUF
7265 EXESUF=$EXESUF
7266 EXTRA_VERSION=$extra_version
7267 CCDEP=$CCDEP
7268 CXXDEP=$CXXDEP
7269 CCDEP_FLAGS=$CCDEP_FLAGS
7270 ASDEP=$ASDEP
7271 ASDEP_FLAGS=$ASDEP_FLAGS
7272 X86ASMDEP=$X86ASMDEP
7273 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
7274 CC_DEPFLAGS=$CC_DEPFLAGS
7275 AS_DEPFLAGS=$AS_DEPFLAGS
7276 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
7277 HOSTCC=$host_cc
7278 HOSTLD=$host_ld
7279 HOSTCFLAGS=$host_cflags
7280 HOSTCPPFLAGS=$host_cppflags
7281 HOSTEXESUF=$HOSTEXESUF
7282 HOSTLDFLAGS=$host_ldflags
7283 HOSTEXTRALIBS=$host_extralibs
7284 DEPHOSTCC=$host_cc
7285 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
7286 HOSTCCDEP=$HOSTCCDEP
7287 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
7288 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
7289 HOSTCC_C=$HOSTCC_C
7290 HOSTCC_O=$HOSTCC_O
7291 HOSTLD_O=$HOSTLD_O
7292 TARGET_EXEC=$target_exec $target_exec_args
7293 TARGET_PATH=$target_path
7294 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
7295 CFLAGS-ffplay=${sdl2_cflags}
7296 CFLAGS_HEADERS=$CFLAGS_HEADERS
7297 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
7298 EXTRALIBS=$extralibs
7299 COMPAT_OBJS=$compat_objs
7300 INSTALL=$install
7301 LIBTARGET=${LIBTARGET}
7302 SLIBNAME=${SLIBNAME}
7303 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
7304 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
7305 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
7306 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
7307 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
7308 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
7309 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
7310 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
7311 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
7312 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
7313 NOREDZONE_FLAGS=$noredzone_flags
7314 LIBFUZZER_PATH=$libfuzzer_path
7315 IGNORE_TESTS=$ignore_tests
7316 EOF
7317
7318 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
7319
7320 for entry in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
7321     eval echo "EXTRALIBS-${entry}=\$${entry}_extralibs" >> ffbuild/config.mak
7322 done
7323
7324 cat > $TMPH <<EOF
7325 /* Automatically generated by configure - do not modify! */
7326 #ifndef FFMPEG_CONFIG_H
7327 #define FFMPEG_CONFIG_H
7328 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
7329 #define FFMPEG_LICENSE "$(c_escape $license)"
7330 #define CONFIG_THIS_YEAR 2019
7331 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
7332 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
7333 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
7334 #define av_restrict $restrict_keyword
7335 #define EXTERN_PREFIX "${extern_prefix}"
7336 #define EXTERN_ASM ${extern_prefix}
7337 #define BUILDSUF "$build_suffix"
7338 #define SLIBSUF "$SLIBSUF"
7339 #define HAVE_MMX2 HAVE_MMXEXT
7340 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
7341 EOF
7342
7343 test -n "$assert_level" &&
7344     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
7345
7346 test -n "$malloc_prefix" &&
7347     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
7348
7349 if enabled x86asm; then
7350     append config_files $TMPASM
7351     cat > $TMPASM <<EOF
7352 ; Automatically generated by configure - do not modify!
7353 EOF
7354 fi
7355
7356 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
7357
7358
7359 mkdir -p doc
7360 mkdir -p tests
7361 mkdir -p tests/api
7362 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
7363
7364 print_config ARCH_   "$config_files" $ARCH_LIST
7365 print_config HAVE_   "$config_files" $HAVE_LIST
7366 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
7367                                      $CONFIG_EXTRA      \
7368                                      $ALL_COMPONENTS    \
7369
7370 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
7371 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
7372
7373 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
7374 cp_if_changed $TMPH config.h
7375 touch ffbuild/.config
7376
7377 enabled x86asm && cp_if_changed $TMPASM config.asm
7378
7379 cat > $TMPH <<EOF
7380 /* Generated by ffmpeg configure */
7381 #ifndef AVUTIL_AVCONFIG_H
7382 #define AVUTIL_AVCONFIG_H
7383 EOF
7384
7385 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
7386
7387 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
7388
7389 cp_if_changed $TMPH libavutil/avconfig.h
7390
7391 # full_filter_name_foo=vf_foo
7392 # full_filter_name_bar=asrc_bar
7393 # ...
7394 eval "$(sed -n "s/^extern AVFilter ff_\([avfsinkrc]\{2,5\}\)_\(.*\);/full_filter_name_\2=\1_\2/p" $source_path/libavfilter/allfilters.c)"
7395
7396 # generate the lists of enabled components
7397 print_enabled_components(){
7398     file=$1
7399     struct_name=$2
7400     name=$3
7401     shift 3
7402     echo "static const $struct_name * const $name[] = {" > $TMPH
7403     for c in $*; do
7404         if enabled $c; then
7405             case $name in
7406                 filter_list)
7407                     eval c=\$full_filter_name_${c%_filter}
7408                 ;;
7409                 indev_list)
7410                     c=${c%_indev}_demuxer
7411                 ;;
7412                 outdev_list)
7413                     c=${c%_outdev}_muxer
7414                 ;;
7415             esac
7416             printf "    &ff_%s,\n" $c >> $TMPH
7417         fi
7418     done
7419     if [ "$name" = "filter_list" ]; then
7420         for c in asrc_abuffer vsrc_buffer asink_abuffer vsink_buffer; do
7421             printf "    &ff_%s,\n" $c >> $TMPH
7422         done
7423     fi
7424     echo "    NULL };" >> $TMPH
7425     cp_if_changed $TMPH $file
7426 }
7427
7428 print_enabled_components libavfilter/filter_list.c AVFilter filter_list $FILTER_LIST
7429 print_enabled_components libavcodec/codec_list.c AVCodec codec_list $CODEC_LIST
7430 print_enabled_components libavcodec/parser_list.c AVCodecParser parser_list $PARSER_LIST
7431 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
7432 print_enabled_components libavformat/demuxer_list.c AVInputFormat demuxer_list $DEMUXER_LIST
7433 print_enabled_components libavformat/muxer_list.c AVOutputFormat muxer_list $MUXER_LIST
7434 print_enabled_components libavdevice/indev_list.c AVInputFormat indev_list $INDEV_LIST
7435 print_enabled_components libavdevice/outdev_list.c AVOutputFormat outdev_list $OUTDEV_LIST
7436 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
7437
7438 # Settings for pkg-config files
7439
7440 cat > $TMPH <<EOF
7441 # Automatically generated by configure - do not modify!
7442 shared=$shared
7443 build_suffix=$build_suffix
7444 prefix=$prefix
7445 libdir=$libdir
7446 incdir=$incdir
7447 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
7448 source_path=${source_path}
7449 LIBPREF=${LIBPREF}
7450 LIBSUF=${LIBSUF}
7451 extralibs_avutil="$avutil_extralibs"
7452 extralibs_avcodec="$avcodec_extralibs"
7453 extralibs_avformat="$avformat_extralibs"
7454 extralibs_avdevice="$avdevice_extralibs"
7455 extralibs_avfilter="$avfilter_extralibs"
7456 extralibs_avresample="$avresample_extralibs"
7457 extralibs_postproc="$postproc_extralibs"
7458 extralibs_swscale="$swscale_extralibs"
7459 extralibs_swresample="$swresample_extralibs"
7460 EOF
7461
7462 for lib in $LIBRARY_LIST; do
7463     lib_deps="$(eval echo \$${lib}_deps)"
7464     echo ${lib}_deps=\"$lib_deps\" >> $TMPH
7465 done
7466
7467 cp_if_changed $TMPH ffbuild/config.sh