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

   1 #!/bin/sh
   2 #
   3 # FFmpeg configure script
   4 #
   5 # Copyright (c) 2000-2002 Fabrice Bellard
   6 # Copyright (c) 2005-2008 Diego Biurrun
   7 # Copyright (c) 2005-2008 Mans Rullgard
   8 #
   9
  10 # Prevent locale nonsense from breaking basic text processing.
  11 LC_ALL=C
  12 export LC_ALL
  13
  14 # make sure we are running under a compatible shell
  15 # try to make this part work with most shells
  16
  17 try_exec(){
  18     echo "Trying shell $1"
  19     type "$1" > /dev/null 2>&1 && exec "$@"
  20 }
  21
  22 unset foo
  23 (: ${foo%%bar}) 2> /dev/null
  24 E1="$?"
  25
  26 (: ${foo?}) 2> /dev/null
  27 E2="$?"
  28
  29 if test "$E1" != 0 || test "$E2" = 0; then
  30     echo "Broken shell detected.  Trying alternatives."
  31     export FF_CONF_EXEC
  32     if test "0$FF_CONF_EXEC" -lt 1; then
  33         FF_CONF_EXEC=1
  34         try_exec bash "$0" "$@"
  35     fi
  36     if test "0$FF_CONF_EXEC" -lt 2; then
  37         FF_CONF_EXEC=2
  38         try_exec ksh "$0" "$@"
  39     fi
  40     if test "0$FF_CONF_EXEC" -lt 3; then
  41         FF_CONF_EXEC=3
  42         try_exec /usr/xpg4/bin/sh "$0" "$@"
  43     fi
  44     echo "No compatible shell script interpreter found."
  45     echo "This configure script requires a POSIX-compatible shell"
  46     echo "such as bash or ksh."
  47     echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
  48     echo "Instead, install a working POSIX-compatible shell."
  49     echo "Disabling this configure test will create a broken FFmpeg."
  50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
  51         echo "This bash version ($BASH_VERSION) is broken on your platform."
  52         echo "Upgrade to a later version if available."
  53     fi
  54     exit 1
  55 fi
  56
  57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
  58
  59 show_help(){
  60     cat <<EOF
  61 Usage: configure [options]
  62 Options: [defaults in brackets after descriptions]
  63
  64 Help options:
  65   --help                   print this message
  66   --quiet                  Suppress showing informative output
  67   --list-decoders          show all available decoders
  68   --list-encoders          show all available encoders
  69   --list-hwaccels          show all available hardware accelerators
  70   --list-demuxers          show all available demuxers
  71   --list-muxers            show all available muxers
  72   --list-parsers           show all available parsers
  73   --list-protocols         show all available protocols
  74   --list-bsfs              show all available bitstream filters
  75   --list-indevs            show all available input devices
  76   --list-outdevs           show all available output devices
  77   --list-filters           show all available filters
  78
  79 Standard options:
  80   --logfile=FILE           log tests and output to FILE [ffbuild/config.log]
  81   --disable-logging        do not log configure debug information
  82   --fatal-warnings         fail if any configure warning is generated
  83   --prefix=PREFIX          install in PREFIX [$prefix_default]
  84   --bindir=DIR             install binaries in DIR [PREFIX/bin]
  85   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
  86   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
  87   --libdir=DIR             install libs in DIR [PREFIX/lib]
  88   --shlibdir=DIR           install shared libs in DIR [LIBDIR]
  89   --incdir=DIR             install includes in DIR [PREFIX/include]
  90   --mandir=DIR             install man page in DIR [PREFIX/share/man]
  91   --pkgconfigdir=DIR       install pkg-config files in DIR [LIBDIR/pkgconfig]
  92   --enable-rpath           use rpath to allow installing libraries in paths
  93                            not part of the dynamic linker search path
  94                            use rpath when linking programs (USE WITH CARE)
  95   --install-name-dir=DIR   Darwin directory name for installed targets
  96
  97 Licensing options:
  98   --enable-gpl             allow use of GPL code, the resulting libs
  99                            and binaries will be under GPL [no]
 100   --enable-version3        upgrade (L)GPL to version 3 [no]
 101   --enable-nonfree         allow use of nonfree code, the resulting libs
 102                            and binaries will be unredistributable [no]
 103
 104 Configuration options:
 105   --disable-static         do not build static libraries [no]
 106   --enable-shared          build shared libraries [no]
 107   --enable-small           optimize for size instead of speed
 108   --disable-runtime-cpudetect disable detecting CPU capabilities at runtime (smaller binary)
 109   --enable-gray            enable full grayscale support (slower color)
 110   --disable-swscale-alpha  disable alpha channel support in swscale
 111   --disable-all            disable building components, libraries and programs
 112   --disable-autodetect     disable automatically detected external libraries [no]
 113
 114 Program options:
 115   --disable-programs       do not build command line programs
 116   --disable-ffmpeg         disable ffmpeg build
 117   --disable-ffplay         disable ffplay build
 118   --disable-ffprobe        disable ffprobe build
 119
 120 Documentation options:
 121   --disable-doc            do not build documentation
 122   --disable-htmlpages      do not build HTML documentation pages
 123   --disable-manpages       do not build man documentation pages
 124   --disable-podpages       do not build POD documentation pages
 125   --disable-txtpages       do not build text documentation pages
 126
 127 Component options:
 128   --disable-avdevice       disable libavdevice build
 129   --disable-avcodec        disable libavcodec build
 130   --disable-avformat       disable libavformat build
 131   --disable-swresample     disable libswresample build
 132   --disable-swscale        disable libswscale build
 133   --disable-postproc       disable libpostproc build
 134   --disable-avfilter       disable libavfilter build
 135   --enable-avresample      enable libavresample build (deprecated) [no]
 136   --disable-pthreads       disable pthreads [autodetect]
 137   --disable-w32threads     disable Win32 threads [autodetect]
 138   --disable-os2threads     disable OS/2 threads [autodetect]
 139   --disable-network        disable network support [no]
 140   --disable-dct            disable DCT code
 141   --disable-dwt            disable DWT code
 142   --disable-error-resilience disable error resilience code
 143   --disable-lsp            disable LSP code
 144   --disable-lzo            disable LZO decoder code
 145   --disable-mdct           disable MDCT code
 146   --disable-rdft           disable RDFT code
 147   --disable-fft            disable FFT code
 148   --disable-faan           disable floating point AAN (I)DCT code
 149   --disable-pixelutils     disable pixel utils in libavutil
 150
 151 Individual component options:
 152   --disable-everything     disable all components listed below
 153   --disable-encoder=NAME   disable encoder NAME
 154   --enable-encoder=NAME    enable encoder NAME
 155   --disable-encoders       disable all encoders
 156   --disable-decoder=NAME   disable decoder NAME
 157   --enable-decoder=NAME    enable decoder NAME
 158   --disable-decoders       disable all decoders
 159   --disable-hwaccel=NAME   disable hwaccel NAME
 160   --enable-hwaccel=NAME    enable hwaccel NAME
 161   --disable-hwaccels       disable all hwaccels
 162   --disable-muxer=NAME     disable muxer NAME
 163   --enable-muxer=NAME      enable muxer NAME
 164   --disable-muxers         disable all muxers
 165   --disable-demuxer=NAME   disable demuxer NAME
 166   --enable-demuxer=NAME    enable demuxer NAME
 167   --disable-demuxers       disable all demuxers
 168   --enable-parser=NAME     enable parser NAME
 169   --disable-parser=NAME    disable parser NAME
 170   --disable-parsers        disable all parsers
 171   --enable-bsf=NAME        enable bitstream filter NAME
 172   --disable-bsf=NAME       disable bitstream filter NAME
 173   --disable-bsfs           disable all bitstream filters
 174   --enable-protocol=NAME   enable protocol NAME
 175   --disable-protocol=NAME  disable protocol NAME
 176   --disable-protocols      disable all protocols
 177   --enable-indev=NAME      enable input device NAME
 178   --disable-indev=NAME     disable input device NAME
 179   --disable-indevs         disable input devices
 180   --enable-outdev=NAME     enable output device NAME
 181   --disable-outdev=NAME    disable output device NAME
 182   --disable-outdevs        disable output devices
 183   --disable-devices        disable all devices
 184   --enable-filter=NAME     enable filter NAME
 185   --disable-filter=NAME    disable filter NAME
 186   --disable-filters        disable all filters
 187
 188 External library support:
 189
 190   Using any of the following switches will allow FFmpeg to link to the
 191   corresponding external library. All the components depending on that library
 192   will become enabled, if all their other dependencies are met and they are not
 193   explicitly disabled. E.g. --enable-libwavpack will enable linking to
 194   libwavpack and allow the libwavpack encoder to be built, unless it is
 195   specifically disabled with --disable-encoder=libwavpack.
 196
 197   Note that only the system libraries are auto-detected. All the other external
 198   libraries must be explicitly enabled.
 199
 200   Also note that the following help text describes the purpose of the libraries
 201   themselves, not all their features will necessarily be usable by FFmpeg.
 202
 203   --disable-alsa           disable ALSA support [autodetect]
 204   --disable-appkit         disable Apple AppKit framework [autodetect]
 205   --disable-avfoundation   disable Apple AVFoundation framework [autodetect]
 206   --enable-avisynth        enable reading of AviSynth script files [no]
 207   --disable-bzlib          disable bzlib [autodetect]
 208   --disable-coreimage      disable Apple CoreImage framework [autodetect]
 209   --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
 210   --enable-frei0r          enable frei0r video filtering [no]
 211   --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
 212                            if openssl, librtmp or gmp is not used [no]
 213   --enable-gmp             enable gmp, needed for rtmp(t)e support
 214                            if openssl or librtmp is not used [no]
 215   --enable-gnutls          enable gnutls, needed for https support
 216                            if openssl, libtls or mbedtls is not used [no]
 217   --disable-iconv          disable iconv [autodetect]
 218   --enable-jni             enable JNI support [no]
 219   --enable-ladspa          enable LADSPA audio filtering [no]
 220   --enable-libaom          enable AV1 video encoding/decoding via libaom [no]
 221   --enable-libaribb24      enable ARIB text and caption decoding via libaribb24 [no]
 222   --enable-libass          enable libass subtitles rendering,
 223                            needed for subtitles and ass filter [no]
 224   --enable-libbluray       enable BluRay reading using libbluray [no]
 225   --enable-libbs2b         enable bs2b DSP library [no]
 226   --enable-libcaca         enable textual display using libcaca [no]
 227   --enable-libcelt         enable CELT decoding via libcelt [no]
 228   --enable-libcdio         enable audio CD grabbing with libcdio [no]
 229   --enable-libcodec2       enable codec2 en/decoding using libcodec2 [no]
 230   --enable-libdav1d        enable AV1 decoding via libdav1d [no]
 231   --enable-libdavs2        enable AVS2 decoding via libdavs2 [no]
 232   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 233                            and libraw1394 [no]
 234   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 235   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 236   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
 237   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
 238   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
 239   --enable-libgme          enable Game Music Emu via libgme [no]
 240   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 241   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 242   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 243   --enable-libjack         enable JACK audio sound server [no]
 244   --enable-libklvanc       enable Kernel Labs VANC processing [no]
 245   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
 246   --enable-liblensfun      enable lensfun lens correction [no]
 247   --enable-libmodplug      enable ModPlug via libmodplug [no]
 248   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 249   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 250   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 251   --enable-libopencv       enable video filtering via libopencv [no]
 252   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 253   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 254   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
 255   --enable-libopus         enable Opus de/encoding via libopus [no]
 256   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 257   --enable-librsvg         enable SVG rasterization via librsvg [no]
 258   --enable-librubberband   enable rubberband needed for rubberband filter [no]
 259   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 260   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 261   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 262   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
 263   --enable-libsoxr         enable Include libsoxr resampling [no]
 264   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 265   --enable-libsrt          enable Haivision SRT protocol via libsrt [no]
 266   --enable-libssh          enable SFTP protocol via libssh [no]
 267   --enable-libtensorflow   enable TensorFlow as a DNN module backend
 268                            for DNN based filters like sr [no]
 269   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
 270   --enable-libtheora       enable Theora encoding via libtheora [no]
 271   --enable-libtls          enable LibreSSL (via libtls), needed for https support
 272                            if openssl, gnutls or mbedtls is not used [no]
 273   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 274   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 275   --enable-libvidstab      enable video stabilization using vid.stab [no]
 276   --enable-libvmaf         enable vmaf filter via libvmaf [no]
 277   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 278   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 279                            native implementation exists [no]
 280   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 281   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 282   --enable-libwebp         enable WebP encoding via libwebp [no]
 283   --enable-libx264         enable H.264 encoding via x264 [no]
 284   --enable-libx265         enable HEVC encoding via x265 [no]
 285   --enable-libxavs         enable AVS encoding via xavs [no]
 286   --enable-libxavs2        enable AVS2 encoding via xavs2 [no]
 287   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
 288   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
 289   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
 290   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
 291   --enable-libxvid         enable Xvid encoding via xvidcore,
 292                            native MPEG-4/Xvid encoder exists [no]
 293   --enable-libxml2         enable XML parsing using the C library libxml2, needed
 294                            for dash demuxing support [no]
 295   --enable-libzimg         enable z.lib, needed for zscale filter [no]
 296   --enable-libzmq          enable message passing via libzmq [no]
 297   --enable-libzvbi         enable teletext support via libzvbi [no]
 298   --enable-lv2             enable LV2 audio filtering [no]
 299   --disable-lzma           disable lzma [autodetect]
 300   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
 301   --enable-mbedtls         enable mbedTLS, needed for https support
 302                            if openssl, gnutls or libtls is not used [no]
 303   --enable-mediacodec      enable Android MediaCodec support [no]
 304   --enable-libmysofa       enable libmysofa, needed for sofalizer filter [no]
 305   --enable-openal          enable OpenAL 1.1 capture support [no]
 306   --enable-opencl          enable OpenCL processing [no]
 307   --enable-opengl          enable OpenGL rendering [no]
 308   --enable-openssl         enable openssl, needed for https support
 309                            if gnutls, libtls or mbedtls is not used [no]
 310   --enable-pocketsphinx    enable PocketSphinx, needed for asr filter [no]
 311   --disable-sndio          disable sndio support [autodetect]
 312   --disable-schannel       disable SChannel SSP, needed for TLS support on
 313                            Windows if openssl and gnutls are not used [autodetect]
 314   --disable-sdl2           disable sdl2 [autodetect]
 315   --disable-securetransport disable Secure Transport, needed for TLS support
 316                            on OSX if openssl and gnutls are not used [autodetect]
 317   --enable-vapoursynth     enable VapourSynth demuxer [no]
 318   --disable-xlib           disable xlib [autodetect]
 319   --disable-zlib           disable zlib [autodetect]
 320
 321   The following libraries provide various hardware acceleration features:
 322   --disable-amf            disable AMF video encoding code [autodetect]
 323   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
 324   --enable-cuda-nvcc       enable Nvidia CUDA compiler [no]
 325   --disable-cuvid          disable Nvidia CUVID support [autodetect]
 326   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
 327   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
 328   --disable-ffnvcodec      disable dynamically linked Nvidia code [autodetect]
 329   --enable-libdrm          enable DRM code (Linux) [no]
 330   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
 331   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
 332   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
 333   --disable-nvdec          disable Nvidia video decoding acceleration (via hwaccel) [autodetect]
 334   --disable-nvenc          disable Nvidia video encoding code [autodetect]
 335   --enable-omx             enable OpenMAX IL code [no]
 336   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
 337   --enable-rkmpp           enable Rockchip Media Process Platform code [no]
 338   --disable-v4l2-m2m       disable V4L2 mem2mem code [autodetect]
 339   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
 340   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
 341   --disable-videotoolbox   disable VideoToolbox code [autodetect]
 342
 343 Toolchain options:
 344   --arch=ARCH              select architecture [$arch]
 345   --cpu=CPU                select the minimum required CPU (affects
 346                            instruction selection, may crash on older CPUs)
 347   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 348   --progs-suffix=SUFFIX    program name suffix []
 349   --enable-cross-compile   assume a cross-compiler is used
 350   --sysroot=PATH           root of cross-build tree
 351   --sysinclude=PATH        location of cross-build system headers
 352   --target-os=OS           compiler targets OS [$target_os]
 353   --target-exec=CMD        command to run executables on target
 354   --target-path=DIR        path to view of build directory on target
 355   --target-samples=DIR     path to samples directory on target
 356   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 357   --toolchain=NAME         set tool defaults according to NAME
 358                            (gcc-asan, clang-asan, gcc-msan, clang-msan,
 359                            gcc-tsan, clang-tsan, gcc-usan, clang-usan,
 360                            valgrind-massif, valgrind-memcheck,
 361                            msvc, icl, gcov, llvm-cov, hardened)
 362   --nm=NM                  use nm tool NM [$nm_default]
 363   --ar=AR                  use archive tool AR [$ar_default]
 364   --as=AS                  use assembler AS [$as_default]
 365   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
 366   --strip=STRIP            use strip tool STRIP [$strip_default]
 367   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 368   --x86asmexe=EXE          use nasm-compatible assembler EXE [$x86asmexe_default]
 369   --cc=CC                  use C compiler CC [$cc_default]
 370   --cxx=CXX                use C compiler CXX [$cxx_default]
 371   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 372   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 373   --nvcc=NVCC              use Nvidia CUDA compiler NVCC [$nvcc_default]
 374   --ld=LD                  use linker LD [$ld_default]
 375   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 376   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 377   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 378   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 379   --host-cc=HOSTCC         use host C compiler HOSTCC
 380   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 381   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 382   --host-ld=HOSTLD         use host linker HOSTLD
 383   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 384   --host-extralibs=HLIBS   use libs HLIBS when linking for host
 385   --host-os=OS             compiler host OS [$target_os]
 386   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 387   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 388   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 389   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 390   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 391   --extra-ldsoflags=ELDFLAGS add ELDFLAGS to LDSOFLAGS [$LDSOFLAGS]
 392   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 393   --extra-version=STRING   version string suffix []
 394   --optflags=OPTFLAGS      override optimization-related compiler flags
 395   --nvccflags=NVCCFLAGS    override nvcc flags [$nvccflags_default]
 396   --build-suffix=SUFFIX    library name suffix []
 397   --enable-pic             build position-independent code
 398   --enable-thumb           compile for Thumb instruction set
 399   --enable-lto             use link-time optimization
 400   --env="ENV=override"     override the environment variables
 401
 402 Advanced options (experts only):
 403   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 404   --custom-allocator=NAME  use a supported custom allocator
 405   --disable-symver         disable symbol versioning
 406   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 407   --disable-safe-bitstream-reader
 408                            disable buffer boundary checking in bitreaders
 409                            (faster, but may crash)
 410   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 411
 412 Optimization options (experts only):
 413   --disable-asm            disable all assembly optimizations
 414   --disable-altivec        disable AltiVec optimizations
 415   --disable-vsx            disable VSX optimizations
 416   --disable-power8         disable POWER8 optimizations
 417   --disable-amd3dnow       disable 3DNow! optimizations
 418   --disable-amd3dnowext    disable 3DNow! extended optimizations
 419   --disable-mmx            disable MMX optimizations
 420   --disable-mmxext         disable MMXEXT optimizations
 421   --disable-sse            disable SSE optimizations
 422   --disable-sse2           disable SSE2 optimizations
 423   --disable-sse3           disable SSE3 optimizations
 424   --disable-ssse3          disable SSSE3 optimizations
 425   --disable-sse4           disable SSE4 optimizations
 426   --disable-sse42          disable SSE4.2 optimizations
 427   --disable-avx            disable AVX optimizations
 428   --disable-xop            disable XOP optimizations
 429   --disable-fma3           disable FMA3 optimizations
 430   --disable-fma4           disable FMA4 optimizations
 431   --disable-avx2           disable AVX2 optimizations
 432   --disable-avx512         disable AVX-512 optimizations
 433   --disable-aesni          disable AESNI optimizations
 434   --disable-armv5te        disable armv5te optimizations
 435   --disable-armv6          disable armv6 optimizations
 436   --disable-armv6t2        disable armv6t2 optimizations
 437   --disable-vfp            disable VFP optimizations
 438   --disable-neon           disable NEON optimizations
 439   --disable-inline-asm     disable use of inline assembly
 440   --disable-x86asm         disable use of standalone x86 assembly
 441   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
 442   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 443   --disable-msa            disable MSA optimizations
 444   --disable-mipsfpu        disable floating point MIPS optimizations
 445   --disable-mmi            disable Loongson SIMD optimizations
 446   --disable-fast-unaligned consider unaligned accesses slow
 447
 448 Developer options (useful when working on FFmpeg itself):
 449   --disable-debug          disable debugging symbols
 450   --enable-debug=LEVEL     set the debug level [$debuglevel]
 451   --disable-optimizations  disable compiler optimizations
 452   --enable-extra-warnings  enable more compiler warnings
 453   --disable-stripping      disable stripping of executables and shared libraries
 454   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 455                            2 causes a slowdown at runtime.
 456   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 457   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 458                            leaks and errors, using the specified valgrind binary.
 459                            Cannot be combined with --target-exec
 460   --enable-ftrapv          Trap arithmetic overflows
 461   --samples=PATH           location of test samples for FATE, if not set use
 462                            \$FATE_SAMPLES at make invocation time.
 463   --enable-neon-clobber-test check NEON registers for clobbering (should be
 464                            used only for debugging purposes)
 465   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 466                            should be used only for debugging purposes)
 467   --enable-random          randomly enable/disable components
 468   --disable-random
 469   --enable-random=LIST     randomly enable/disable specific components or
 470   --disable-random=LIST    component groups. LIST is a comma-separated list
 471                            of NAME[:PROB] entries where NAME is a component
 472                            (group) and PROB the probability associated with
 473                            NAME (default 0.5).
 474   --random-seed=VALUE      seed value for --enable/disable-random
 475   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 476                            (only applies to --disable-optimizations builds)
 477   --enable-ossfuzz         Enable building fuzzer tool
 478   --libfuzzer=PATH         path to libfuzzer
 479   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
 480                            in the name) of tests whose result is ignored
 481   --enable-linux-perf      enable Linux Performance Monitor API
 482
 483 NOTE: Object files are built at the place where configure is launched.
 484 EOF
 485   exit 0
 486 }
 487
 488 if test -t 1 && which tput >/dev/null 2>&1; then
 489     ncolors=$(tput colors)
 490     if test -n "$ncolors" && test $ncolors -ge 8; then
 491         bold_color=$(tput bold)
 492         warn_color=$(tput setaf 3)
 493         error_color=$(tput setaf 1)
 494         reset_color=$(tput sgr0)
 495     fi
 496     # 72 used instead of 80 since that's the default of pr
 497     ncols=$(tput cols)
 498 fi
 499 : ${ncols:=72}
 500
 501 log(){
 502     echo "$@" >> $logfile
 503 }
 504
 505 log_file(){
 506     log BEGIN "$1"
 507     log_file_i=1
 508     while IFS= read -r log_file_line; do
 509         printf '%5d\t%s\n' "$log_file_i" "$log_file_line"
 510         log_file_i=$(($log_file_i+1))
 511     done < "$1" >> "$logfile"
 512     log END "$1"
 513 }
 514
 515 warn(){
 516     log "WARNING: $*"
 517     WARNINGS="${WARNINGS}WARNING: $*\n"
 518 }
 519
 520 die(){
 521     log "$@"
 522     echo "$error_color$bold_color$@$reset_color"
 523     cat <<EOF
 524
 525 If you think configure made a mistake, make sure you are using the latest
 526 version from Git.  If the latest version fails, report the problem to the
 527 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 528 EOF
 529     if disabled logging; then
 530         cat <<EOF
 531 Rerun configure with logging enabled (do not use --disable-logging), and
 532 include the log this produces with your report.
 533 EOF
 534     else
 535         cat <<EOF
 536 Include the log file "$logfile" produced by configure as this will help
 537 solve the problem.
 538 EOF
 539     fi
 540     exit 1
 541 }
 542
 543 # Avoid locale weirdness, besides we really just want to translate ASCII.
 544 toupper(){
 545     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 546 }
 547
 548 tolower(){
 549     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 550 }
 551
 552 c_escape(){
 553     echo "$*" | sed 's/["\\]/\\\0/g'
 554 }
 555
 556 sh_quote(){
 557     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 558     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 559     echo "$v"
 560 }
 561
 562 cleanws(){
 563     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 564 }
 565
 566 filter(){
 567     pat=$1
 568     shift
 569     for v; do
 570         eval "case '$v' in $pat) printf '%s ' '$v' ;; esac"
 571     done
 572 }
 573
 574 filter_out(){
 575     pat=$1
 576     shift
 577     for v; do
 578         eval "case '$v' in $pat) ;; *) printf '%s ' '$v' ;; esac"
 579     done
 580 }
 581
 582 map(){
 583     m=$1
 584     shift
 585     for v; do eval $m; done
 586 }
 587
 588 add_suffix(){
 589     suffix=$1
 590     shift
 591     for v; do echo ${v}${suffix}; done
 592 }
 593
 594 remove_suffix(){
 595     suffix=$1
 596     shift
 597     for v; do echo ${v%$suffix}; done
 598 }
 599
 600 set_all(){
 601     value=$1
 602     shift
 603     for var in $*; do
 604         eval $var=$value
 605     done
 606 }
 607
 608 set_weak(){
 609     value=$1
 610     shift
 611     for var; do
 612         eval : \${$var:=$value}
 613     done
 614 }
 615
 616 sanitize_var_name(){
 617     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 618 }
 619
 620 set_sanitized(){
 621     var=$1
 622     shift
 623     eval $(sanitize_var_name "$var")='$*'
 624 }
 625
 626 get_sanitized(){
 627     eval echo \$$(sanitize_var_name "$1")
 628 }
 629
 630 pushvar(){
 631     for pvar in $*; do
 632         eval level=\${${pvar}_level:=0}
 633         eval ${pvar}_${level}="\$$pvar"
 634         eval ${pvar}_level=$(($level+1))
 635     done
 636 }
 637
 638 popvar(){
 639     for pvar in $*; do
 640         eval level=\${${pvar}_level:-0}
 641         test $level = 0 && continue
 642         eval level=$(($level-1))
 643         eval $pvar="\${${pvar}_${level}}"
 644         eval ${pvar}_level=$level
 645         eval unset ${pvar}_${level}
 646     done
 647 }
 648
 649 request(){
 650     for var in $*; do
 651         eval ${var}_requested=yes
 652         eval $var=
 653     done
 654 }
 655
 656 warn_if_gets_disabled(){
 657     for var in $*; do
 658         WARN_IF_GETS_DISABLED_LIST="$WARN_IF_GETS_DISABLED_LIST $var"
 659     done
 660 }
 661
 662 enable(){
 663     set_all yes $*
 664 }
 665
 666 disable(){
 667     set_all no $*
 668 }
 669
 670 disable_with_reason(){
 671     disable $1
 672     eval "${1}_disable_reason=\"$2\""
 673     if requested $1; then
 674         die "ERROR: $1 requested, but $2"
 675     fi
 676 }
 677
 678 enable_weak(){
 679     set_weak yes $*
 680 }
 681
 682 disable_weak(){
 683     set_weak no $*
 684 }
 685
 686 enable_sanitized(){
 687     for var; do
 688         enable $(sanitize_var_name $var)
 689     done
 690 }
 691
 692 disable_sanitized(){
 693     for var; do
 694         disable $(sanitize_var_name $var)
 695     done
 696 }
 697
 698 do_enable_deep(){
 699     for var; do
 700         enabled $var && continue
 701         set -- $var
 702         eval enable_deep \$${var}_select
 703         var=$1
 704         eval enable_deep_weak \$${var}_suggest
 705     done
 706 }
 707
 708 enable_deep(){
 709     do_enable_deep $*
 710     enable $*
 711 }
 712
 713 enable_deep_weak(){
 714     for var; do
 715         disabled $var && continue
 716         set -- $var
 717         do_enable_deep $var
 718         var=$1
 719         enable_weak $var
 720     done
 721 }
 722
 723 requested(){
 724     test "${1#!}" = "$1" && op="=" || op="!="
 725     eval test "x\$${1#!}_requested" $op "xyes"
 726 }
 727
 728 enabled(){
 729     test "${1#!}" = "$1" && op="=" || op="!="
 730     eval test "x\$${1#!}" $op "xyes"
 731 }
 732
 733 disabled(){
 734     test "${1#!}" = "$1" && op="=" || op="!="
 735     eval test "x\$${1#!}" $op "xno"
 736 }
 737
 738 enabled_all(){
 739     for opt; do
 740         enabled $opt || return 1
 741     done
 742 }
 743
 744 disabled_all(){
 745     for opt; do
 746         disabled $opt || return 1
 747     done
 748 }
 749
 750 enabled_any(){
 751     for opt; do
 752         enabled $opt && return 0
 753     done
 754 }
 755
 756 disabled_any(){
 757     for opt; do
 758         disabled $opt && return 0
 759     done
 760     return 1
 761 }
 762
 763 set_default(){
 764     for opt; do
 765         eval : \${$opt:=\$${opt}_default}
 766     done
 767 }
 768
 769 is_in(){
 770     value=$1
 771     shift
 772     for var in $*; do
 773         [ $var = $value ] && return 0
 774     done
 775     return 1
 776 }
 777
 778 # The cfg loop is very hot (several thousands iterations), and in bash also
 779 # potentialy quite slow. Try to abort the iterations early, preferably without
 780 # calling functions. 70%+ of the time cfg is already done or without deps.
 781 check_deps(){
 782     for cfg; do
 783         eval [ x\$${cfg}_checking = xdone ] && continue
 784         eval [ x\$${cfg}_checking = xinprogress ] && die "Circular dependency for $cfg."
 785
 786         eval "
 787         dep_all=\$${cfg}_deps
 788         dep_any=\$${cfg}_deps_any
 789         dep_con=\$${cfg}_conflict
 790         dep_sel=\$${cfg}_select
 791         dep_sgs=\$${cfg}_suggest
 792         dep_ifa=\$${cfg}_if
 793         dep_ifn=\$${cfg}_if_any
 794         "
 795
 796         # most of the time here $cfg has no deps - avoid costly no-op work
 797         if [ "$dep_all$dep_any$dep_con$dep_sel$dep_sgs$dep_ifa$dep_ifn" ]; then
 798             eval ${cfg}_checking=inprogress
 799
 800             set -- $cfg "$dep_all" "$dep_any" "$dep_con" "$dep_sel" "$dep_sgs" "$dep_ifa" "$dep_ifn"
 801             check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
 802             cfg=$1; dep_all=$2; dep_any=$3; dep_con=$4; dep_sel=$5 dep_sgs=$6; dep_ifa=$7; dep_ifn=$8
 803
 804             [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 805             [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 806             enabled_all  $dep_all || { disable_with_reason $cfg "not all dependencies are satisfied: $dep_all"; }
 807             enabled_any  $dep_any || { disable_with_reason $cfg "not any dependency is satisfied: $dep_any"; }
 808             disabled_all $dep_con || { disable_with_reason $cfg "some conflicting dependencies are unsatisfied: $dep_con"; }
 809             disabled_any $dep_sel && { disable_with_reason $cfg "some selected dependency is unsatisfied: $dep_sel"; }
 810
 811             enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
 812
 813             for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
 814                 # filter out library deps, these do not belong in extralibs
 815                 is_in $dep $LIBRARY_LIST && continue
 816                 enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
 817             done
 818         fi
 819
 820         eval ${cfg}_checking=done
 821     done
 822 }
 823
 824 print_config(){
 825     pfx=$1
 826     files=$2
 827     shift 2
 828     map 'eval echo "$v \${$v:-no}"' "$@" |
 829     awk "BEGIN { split(\"$files\", files) }
 830         {
 831             c = \"$pfx\" toupper(\$1);
 832             v = \$2;
 833             sub(/yes/, 1, v);
 834             sub(/no/,  0, v);
 835             for (f in files) {
 836                 file = files[f];
 837                 if (file ~ /\\.h\$/) {
 838                     printf(\"#define %s %d\\n\", c, v) >>file;
 839                 } else if (file ~ /\\.asm\$/) {
 840                     printf(\"%%define %s %d\\n\", c, v) >>file;
 841                 } else if (file ~ /\\.mak\$/) {
 842                     n = -v ? \"\" : \"!\";
 843                     printf(\"%s%s=yes\\n\", n, c) >>file;
 844                 } else if (file ~ /\\.texi\$/) {
 845                     pre = -v ? \"\" : \"@c \";
 846                     yesno = \$2;
 847                     c2 = tolower(c);
 848                     gsub(/_/, \"-\", c2);
 849                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 850                 }
 851             }
 852         }"
 853 }
 854
 855 print_enabled(){
 856     suf=$1
 857     shift
 858     for v; do
 859         enabled $v && printf "%s\n" ${v%$suf}
 860     done
 861 }
 862
 863 append(){
 864     var=$1
 865     shift
 866     eval "$var=\"\$$var $*\""
 867 }
 868
 869 prepend(){
 870     var=$1
 871     shift
 872     eval "$var=\"$* \$$var\""
 873 }
 874
 875 reverse () {
 876     eval '
 877         reverse_out=
 878         for v in $'$1'; do
 879             reverse_out="$v $reverse_out"
 880         done
 881         '$1'=$reverse_out
 882     '
 883 }
 884
 885 # keeps the last occurence of each non-unique item
 886 unique(){
 887     unique_out=
 888     eval unique_in=\$$1
 889     reverse unique_in
 890     for v in $unique_in; do
 891         # " $unique_out" +space such that every item is surrounded with spaces
 892         case " $unique_out" in *" $v "*) continue; esac  # already in list
 893         unique_out="$unique_out$v "
 894     done
 895     reverse unique_out
 896     eval $1=\$unique_out
 897 }
 898
 899 resolve(){
 900     resolve_out=
 901     eval resolve_in=\$$1
 902     for v in $resolve_in; do
 903         eval 'resolve_out="$resolve_out$'$v' "'
 904     done
 905     eval $1=\$resolve_out
 906 }
 907
 908 add_cppflags(){
 909     append CPPFLAGS "$@"
 910 }
 911
 912 add_cflags(){
 913     append CFLAGS $($cflags_filter "$@")
 914 }
 915
 916 add_cflags_headers(){
 917     append CFLAGS_HEADERS $($cflags_filter "$@")
 918 }
 919
 920 add_cxxflags(){
 921     append CXXFLAGS $($cflags_filter "$@")
 922 }
 923
 924 add_objcflags(){
 925     append OBJCFLAGS $($objcflags_filter "$@")
 926 }
 927
 928 add_asflags(){
 929     append ASFLAGS $($asflags_filter "$@")
 930 }
 931
 932 add_ldflags(){
 933     append LDFLAGS $($ldflags_filter "$@")
 934 }
 935
 936 add_ldexeflags(){
 937     append LDEXEFLAGS $($ldflags_filter "$@")
 938 }
 939
 940 add_ldsoflags(){
 941     append LDSOFLAGS $($ldflags_filter "$@")
 942 }
 943
 944 add_extralibs(){
 945     prepend extralibs $($ldflags_filter "$@")
 946 }
 947
 948 add_stripflags(){
 949     append ASMSTRIPFLAGS "$@"
 950 }
 951
 952 add_host_cppflags(){
 953     append host_cppflags "$@"
 954 }
 955
 956 add_host_cflags(){
 957     append host_cflags $($host_cflags_filter "$@")
 958 }
 959
 960 add_host_ldflags(){
 961     append host_ldflags $($host_ldflags_filter "$@")
 962 }
 963
 964 add_compat(){
 965     append compat_objs $1
 966     shift
 967     map 'add_cppflags -D$v' "$@"
 968 }
 969
 970 test_cmd(){
 971     log "$@"
 972     "$@" >> $logfile 2>&1
 973 }
 974
 975 test_stat(){
 976     log test_stat "$@"
 977     stat "$1" >> $logfile 2>&1
 978 }
 979
 980 cc_e(){
 981     eval printf '%s\\n' $CC_E
 982 }
 983
 984 cc_o(){
 985     eval printf '%s\\n' $CC_O
 986 }
 987
 988 as_o(){
 989     eval printf '%s\\n' $AS_O
 990 }
 991
 992 x86asm_o(){
 993     eval printf '%s\\n' $X86ASM_O
 994 }
 995
 996 ld_o(){
 997     eval printf '%s\\n' $LD_O
 998 }
 999
1000 hostcc_e(){
1001     eval printf '%s\\n' $HOSTCC_E
1002 }
1003
1004 hostcc_o(){
1005     eval printf '%s\\n' $HOSTCC_O
1006 }
1007
1008 nvcc_o(){
1009     eval printf '%s\\n' $NVCC_O
1010 }
1011
1012 test_cc(){
1013     log test_cc "$@"
1014     cat > $TMPC
1015     log_file $TMPC
1016     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
1017 }
1018
1019 test_cxx(){
1020     log test_cxx "$@"
1021     cat > $TMPCPP
1022     log_file $TMPCPP
1023     test_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
1024 }
1025
1026 test_objcc(){
1027     log test_objcc "$@"
1028     cat > $TMPM
1029     log_file $TMPM
1030     test_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
1031 }
1032
1033 test_nvcc(){
1034     log test_nvcc "$@"
1035     cat > $TMPCU
1036     log_file $TMPCU
1037     tmpcu_=$TMPCU
1038     tmpo_=$TMPO
1039     [ -x "$(command -v cygpath)" ] && tmpcu_=$(cygpath -m $tmpcu_) && tmpo_=$(cygpath -m $tmpo_)
1040     test_cmd $nvcc -ptx $NVCCFLAGS "$@" $NVCC_C $(nvcc_o $tmpo_) $tmpcu_
1041 }
1042
1043 check_nvcc() {
1044     log check_nvcc "$@"
1045     test_nvcc <<EOF
1046 extern "C" {
1047     __global__ void hello(unsigned char *data) {}
1048 }
1049 EOF
1050 }
1051
1052 test_cpp(){
1053     log test_cpp "$@"
1054     cat > $TMPC
1055     log_file $TMPC
1056     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
1057 }
1058
1059 test_as(){
1060     log test_as "$@"
1061     cat > $TMPS
1062     log_file $TMPS
1063     test_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
1064 }
1065
1066 test_x86asm(){
1067     log test_x86asm "$@"
1068     echo "$1" > $TMPASM
1069     log_file $TMPASM
1070     shift
1071     test_cmd $x86asmexe $X86ASMFLAGS -Werror "$@" $(x86asm_o $TMPO) $TMPASM
1072 }
1073
1074 check_cmd(){
1075     log check_cmd "$@"
1076     cmd=$1
1077     disabled $cmd && return
1078     disable $cmd
1079     test_cmd $@ && enable $cmd
1080 }
1081
1082 check_as(){
1083     log check_as "$@"
1084     name=$1
1085     code=$2
1086     shift 2
1087     disable $name
1088     test_as $@ <<EOF && enable $name
1089 $code
1090 EOF
1091 }
1092
1093 check_inline_asm(){
1094     log check_inline_asm "$@"
1095     name="$1"
1096     code="$2"
1097     shift 2
1098     disable $name
1099     test_cc "$@" <<EOF && enable $name
1100 void foo(void){ __asm__ volatile($code); }
1101 EOF
1102 }
1103
1104 check_inline_asm_flags(){
1105     log check_inline_asm_flags "$@"
1106     name="$1"
1107     code="$2"
1108     flags=''
1109     shift 2
1110     while [ "$1" != "" ]; do
1111       append flags $1
1112       shift
1113     done;
1114     disable $name
1115     cat > $TMPC <<EOF
1116 void foo(void){ __asm__ volatile($code); }
1117 EOF
1118     log_file $TMPC
1119     test_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
1120     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
1121 }
1122
1123 check_insn(){
1124     log check_insn "$@"
1125     check_inline_asm ${1}_inline "\"$2\""
1126     check_as ${1}_external "$2"
1127 }
1128
1129 check_x86asm(){
1130     log check_x86asm "$@"
1131     name=$1
1132     shift
1133     disable $name
1134     test_x86asm "$@" && enable $name
1135 }
1136
1137 test_ld(){
1138     log test_ld "$@"
1139     type=$1
1140     shift 1
1141     flags=$(filter_out '-l*|*.so' $@)
1142     libs=$(filter '-l*|*.so' $@)
1143     test_$type $($cflags_filter $flags) || return
1144     flags=$($ldflags_filter $flags)
1145     libs=$($ldflags_filter $libs)
1146     test_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1147 }
1148
1149 check_ld(){
1150     log check_ld "$@"
1151     type=$1
1152     name=$2
1153     shift 2
1154     disable $name
1155     test_ld $type $@ && enable $name
1156 }
1157
1158 print_include(){
1159     hdr=$1
1160     test "${hdr%.h}" = "${hdr}" &&
1161         echo "#include $hdr"    ||
1162         echo "#include <$hdr>"
1163 }
1164
1165 test_code(){
1166     log test_code "$@"
1167     check=$1
1168     headers=$2
1169     code=$3
1170     shift 3
1171     {
1172         for hdr in $headers; do
1173             print_include $hdr
1174         done
1175         echo "int main(void) { $code; return 0; }"
1176     } | test_$check "$@"
1177 }
1178
1179 check_cppflags(){
1180     log check_cppflags "$@"
1181     test_cpp "$@" <<EOF && append CPPFLAGS "$@"
1182 #include <stdlib.h>
1183 EOF
1184 }
1185
1186 test_cflags(){
1187     log test_cflags "$@"
1188     set -- $($cflags_filter "$@")
1189     test_cc "$@" <<EOF
1190 int x;
1191 EOF
1192 }
1193
1194 check_cflags(){
1195     log check_cflags "$@"
1196     test_cflags "$@" && add_cflags "$@"
1197 }
1198
1199 check_cxxflags(){
1200     log check_cxxflags "$@"
1201     set -- $($cflags_filter "$@")
1202     test_cxx "$@" <<EOF && append CXXFLAGS "$@"
1203 int x;
1204 EOF
1205 }
1206
1207 test_objcflags(){
1208     log test_objcflags "$@"
1209     set -- $($objcflags_filter "$@")
1210     test_objcc "$@" <<EOF
1211 int x;
1212 EOF
1213 }
1214
1215 check_objcflags(){
1216     log check_objcflags "$@"
1217     test_objcflags "$@" && add_objcflags "$@"
1218 }
1219
1220 test_ldflags(){
1221     log test_ldflags "$@"
1222     set -- $($ldflags_filter "$@")
1223     test_ld "cc" "$@" <<EOF
1224 int main(void){ return 0; }
1225 EOF
1226 }
1227
1228 check_ldflags(){
1229     log check_ldflags "$@"
1230     test_ldflags "$@" && add_ldflags "$@"
1231 }
1232
1233 test_stripflags(){
1234     log test_stripflags "$@"
1235     # call test_cc to get a fresh TMPO
1236     test_cc <<EOF
1237 int main(void) { return 0; }
1238 EOF
1239     test_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1240 }
1241
1242 check_stripflags(){
1243     log check_stripflags "$@"
1244     test_stripflags "$@" && add_stripflags "$@"
1245 }
1246
1247 check_headers(){
1248     log check_headers "$@"
1249     headers=$1
1250     shift
1251     disable_sanitized $headers
1252     {
1253         for hdr in $headers; do
1254             print_include $hdr
1255         done
1256         echo "int x;"
1257     } | test_cpp "$@" && enable_sanitized $headers
1258 }
1259
1260 check_header_objcc(){
1261     log check_header_objcc "$@"
1262     rm -f -- "$TMPO"
1263     header=$1
1264     shift
1265     disable_sanitized $header
1266     {
1267        echo "#include <$header>"
1268        echo "int main(void) { return 0; }"
1269     } | test_objcc && test_stat "$TMPO" && enable_sanitized $header
1270 }
1271
1272 check_apple_framework(){
1273     log check_apple_framework "$@"
1274     framework="$1"
1275     name="$(tolower $framework)"
1276     header="${framework}/${framework}.h"
1277     disable $name
1278     check_header_objcc $header &&
1279         enable $name && eval ${name}_extralibs='"-framework $framework"'
1280 }
1281
1282 check_func(){
1283     log check_func "$@"
1284     func=$1
1285     shift
1286     disable $func
1287     test_ld "cc" "$@" <<EOF && enable $func
1288 extern int $func();
1289 int main(void){ $func(); }
1290 EOF
1291 }
1292
1293 check_complexfunc(){
1294     log check_complexfunc "$@"
1295     func=$1
1296     narg=$2
1297     shift 2
1298     test $narg = 2 && args="f, g" || args="f * I"
1299     disable $func
1300     test_ld "cc" "$@" <<EOF && enable $func
1301 #include <complex.h>
1302 #include <math.h>
1303 float foo(complex float f, complex float g) { return $func($args); }
1304 int main(void){ return (int) foo; }
1305 EOF
1306 }
1307
1308 check_mathfunc(){
1309     log check_mathfunc "$@"
1310     func=$1
1311     narg=$2
1312     shift 2
1313     test $narg = 2 && args="f, g" || args="f"
1314     disable $func
1315     test_ld "cc" "$@" <<EOF && enable $func
1316 #include <math.h>
1317 float foo(float f, float g) { return $func($args); }
1318 int main(void){ return (int) foo; }
1319 EOF
1320 }
1321
1322 check_func_headers(){
1323     log check_func_headers "$@"
1324     headers=$1
1325     funcs=$2
1326     shift 2
1327     {
1328         for hdr in $headers; do
1329             print_include $hdr
1330         done
1331         echo "#include <stdint.h>"
1332         for func in $funcs; do
1333             echo "long check_$func(void) { return (long) $func; }"
1334         done
1335         echo "int main(void) { int ret = 0;"
1336         # LTO could optimize out the test functions without this
1337         for func in $funcs; do
1338             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1339         done
1340         echo "return ret; }"
1341     } | test_ld "cc" "$@" && enable $funcs && enable_sanitized $headers
1342 }
1343
1344 check_class_headers_cpp(){
1345     log check_class_headers_cpp "$@"
1346     headers=$1
1347     classes=$2
1348     shift 2
1349     {
1350         for hdr in $headers; do
1351             echo "#include <$hdr>"
1352         done
1353         echo "int main(void) { "
1354         i=1
1355         for class in $classes; do
1356             echo "$class obj$i;"
1357             i=$(expr $i + 1)
1358         done
1359         echo "return 0; }"
1360     } | test_ld "cxx" "$@" && enable $funcs && enable_sanitized $headers
1361 }
1362
1363 test_cpp_condition(){
1364     log test_cpp_condition "$@"
1365     header=$1
1366     condition=$2
1367     shift 2
1368     test_cpp "$@" <<EOF
1369 #include <$header>
1370 #if !($condition)
1371 #error "unsatisfied condition: $condition"
1372 #endif
1373 EOF
1374 }
1375
1376 check_cpp_condition(){
1377     log check_cpp_condition "$@"
1378     name=$1
1379     shift 1
1380     disable $name
1381     test_cpp_condition "$@" && enable $name
1382 }
1383
1384 test_cflags_cc(){
1385     log test_cflags_cc "$@"
1386     flags=$1
1387     header=$2
1388     condition=$3
1389     shift 3
1390     set -- $($cflags_filter "$flags")
1391     test_cc "$@" <<EOF
1392 #include <$header>
1393 #if !($condition)
1394 #error "unsatisfied condition: $condition"
1395 #endif
1396 EOF
1397 }
1398
1399 check_lib(){
1400     log check_lib "$@"
1401     name="$1"
1402     headers="$2"
1403     funcs="$3"
1404     shift 3
1405     disable $name
1406     check_func_headers "$headers" "$funcs" "$@" &&
1407         enable $name && eval ${name}_extralibs="\$@"
1408 }
1409
1410 check_lib_cpp(){
1411     log check_lib_cpp "$@"
1412     name="$1"
1413     headers="$2"
1414     classes="$3"
1415     shift 3
1416     disable $name
1417     check_class_headers_cpp "$headers" "$classes" "$@" &&
1418         enable $name && eval ${name}_extralibs="\$@"
1419 }
1420
1421 test_pkg_config(){
1422     log test_pkg_config "$@"
1423     name="$1"
1424     pkg_version="$2"
1425     pkg="${2%% *}"
1426     headers="$3"
1427     funcs="$4"
1428     shift 4
1429     disable $name
1430     test_cmd $pkg_config --exists --print-errors $pkg_version || return
1431     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1432     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1433     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1434         enable $name &&
1435         set_sanitized "${name}_cflags"    $pkg_cflags &&
1436         set_sanitized "${name}_extralibs" $pkg_libs
1437 }
1438
1439 check_pkg_config(){
1440     log check_pkg_config "$@"
1441     name="$1"
1442     test_pkg_config "$@" &&
1443         eval add_cflags \$${name}_cflags
1444 }
1445
1446 test_exec(){
1447     test_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1448 }
1449
1450 check_exec_crash(){
1451     log check_exec_crash "$@"
1452     code=$(cat)
1453
1454     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1455     # are safe but may not be available everywhere.  Thus we use
1456     # raise(SIGTERM) instead.  The check is run in a subshell so we
1457     # can redirect the "Terminated" message from the shell.  SIGBUS
1458     # is not defined by standard C so it is used conditionally.
1459
1460     (test_exec "$@") >> $logfile 2>&1 <<EOF
1461 #include <signal.h>
1462 static void sighandler(int sig){
1463     raise(SIGTERM);
1464 }
1465 int foo(void){
1466     $code
1467 }
1468 int (*func_ptr)(void) = foo;
1469 int main(void){
1470     signal(SIGILL, sighandler);
1471     signal(SIGFPE, sighandler);
1472     signal(SIGSEGV, sighandler);
1473 #ifdef SIGBUS
1474     signal(SIGBUS, sighandler);
1475 #endif
1476     return func_ptr();
1477 }
1478 EOF
1479 }
1480
1481 check_type(){
1482     log check_type "$@"
1483     headers=$1
1484     type=$2
1485     shift 2
1486     disable_sanitized "$type"
1487     test_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1488 }
1489
1490 check_struct(){
1491     log check_struct "$@"
1492     headers=$1
1493     struct=$2
1494     member=$3
1495     shift 3
1496     disable_sanitized "${struct}_${member}"
1497     test_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1498         enable_sanitized "${struct}_${member}"
1499 }
1500
1501 check_builtin(){
1502     log check_builtin "$@"
1503     name=$1
1504     headers=$2
1505     builtin=$3
1506     shift 3
1507     disable "$name"
1508     test_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1509 }
1510
1511 check_compile_assert(){
1512     log check_compile_assert "$@"
1513     name=$1
1514     headers=$2
1515     condition=$3
1516     shift 3
1517     disable "$name"
1518     test_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1519 }
1520
1521 check_cc(){
1522     log check_cc "$@"
1523     name=$1
1524     shift
1525     disable "$name"
1526     test_code cc "$@" && enable "$name"
1527 }
1528
1529 require(){
1530     log require "$@"
1531     name_version="$1"
1532     name="${1%% *}"
1533     shift
1534     check_lib $name "$@" || die "ERROR: $name_version not found"
1535 }
1536
1537 require_cc(){
1538     log require_cc "$@"
1539     name="$1"
1540     check_cc "$@" || die "ERROR: $name failed"
1541 }
1542
1543 require_cpp(){
1544     name="$1"
1545     headers="$2"
1546     classes="$3"
1547     shift 3
1548     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1549 }
1550
1551 require_headers(){
1552     log require_headers "$@"
1553     headers="$1"
1554     check_headers "$@" || die "ERROR: $headers not found"
1555 }
1556
1557 require_cpp_condition(){
1558     log require_cpp_condition "$@"
1559     condition="$3"
1560     check_cpp_condition "$@" || die "ERROR: $condition not satisfied"
1561 }
1562
1563 require_pkg_config(){
1564     log require_pkg_config "$@"
1565     pkg_version="$2"
1566     check_pkg_config "$@" || die "ERROR: $pkg_version not found using pkg-config$pkg_config_fail_message"
1567 }
1568
1569 test_host_cc(){
1570     log test_host_cc "$@"
1571     cat > $TMPC
1572     log_file $TMPC
1573     test_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1574 }
1575
1576 test_host_cpp(){
1577     log test_host_cpp "$@"
1578     cat > $TMPC
1579     log_file $TMPC
1580     test_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1581 }
1582
1583 check_host_cppflags(){
1584     log check_host_cppflags "$@"
1585     test_host_cpp "$@" <<EOF && append host_cppflags "$@"
1586 #include <stdlib.h>
1587 EOF
1588 }
1589
1590 check_host_cflags(){
1591     log check_host_cflags "$@"
1592     set -- $($host_cflags_filter "$@")
1593     test_host_cc "$@" <<EOF && append host_cflags "$@"
1594 int x;
1595 EOF
1596 }
1597
1598 test_host_cpp_condition(){
1599     log test_host_cpp_condition "$@"
1600     header=$1
1601     condition=$2
1602     shift 2
1603     test_host_cpp "$@" <<EOF
1604 #include <$header>
1605 #if !($condition)
1606 #error "unsatisfied condition: $condition"
1607 #endif
1608 EOF
1609 }
1610
1611 check_host_cpp_condition(){
1612     log check_host_cpp_condition "$@"
1613     name=$1
1614     shift 1
1615     disable $name
1616     test_host_cpp_condition "$@" && enable $name
1617 }
1618
1619 cp_if_changed(){
1620     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1621     mkdir -p "$(dirname $2)"
1622     cp -f "$1" "$2"
1623 }
1624
1625 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1626 # system-dependent things.
1627
1628 AVCODEC_COMPONENTS="
1629     bsfs
1630     decoders
1631     encoders
1632     hwaccels
1633     parsers
1634 "
1635
1636 AVDEVICE_COMPONENTS="
1637     indevs
1638     outdevs
1639 "
1640
1641 AVFILTER_COMPONENTS="
1642     filters
1643 "
1644
1645 AVFORMAT_COMPONENTS="
1646     demuxers
1647     muxers
1648     protocols
1649 "
1650
1651 COMPONENT_LIST="
1652     $AVCODEC_COMPONENTS
1653     $AVDEVICE_COMPONENTS
1654     $AVFILTER_COMPONENTS
1655     $AVFORMAT_COMPONENTS
1656 "
1657
1658 EXAMPLE_LIST="
1659     avio_dir_cmd_example
1660     avio_reading_example
1661     decode_audio_example
1662     decode_video_example
1663     demuxing_decoding_example
1664     encode_audio_example
1665     encode_video_example
1666     extract_mvs_example
1667     filter_audio_example
1668     filtering_audio_example
1669     filtering_video_example
1670     http_multiclient_example
1671     hw_decode_example
1672     metadata_example
1673     muxing_example
1674     qsvdec_example
1675     remuxing_example
1676     resampling_audio_example
1677     scaling_video_example
1678     transcode_aac_example
1679     transcoding_example
1680     vaapi_encode_example
1681     vaapi_transcode_example
1682 "
1683
1684 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1685     alsa
1686     appkit
1687     avfoundation
1688     bzlib
1689     coreimage
1690     iconv
1691     libxcb
1692     libxcb_shm
1693     libxcb_shape
1694     libxcb_xfixes
1695     lzma
1696     schannel
1697     sdl2
1698     securetransport
1699     sndio
1700     xlib
1701     zlib
1702 "
1703
1704 EXTERNAL_LIBRARY_GPL_LIST="
1705     avisynth
1706     frei0r
1707     libcdio
1708     libdavs2
1709     librubberband
1710     libvidstab
1711     libx264
1712     libx265
1713     libxavs
1714     libxavs2
1715     libxvid
1716 "
1717
1718 EXTERNAL_LIBRARY_NONFREE_LIST="
1719     decklink
1720     libfdk_aac
1721     openssl
1722     libtls
1723 "
1724
1725 EXTERNAL_LIBRARY_VERSION3_LIST="
1726     gmp
1727     libaribb24
1728     liblensfun
1729     libopencore_amrnb
1730     libopencore_amrwb
1731     libvmaf
1732     libvo_amrwbenc
1733     mbedtls
1734     rkmpp
1735 "
1736
1737 EXTERNAL_LIBRARY_GPLV3_LIST="
1738     libsmbclient
1739 "
1740
1741 EXTERNAL_LIBRARY_LIST="
1742     $EXTERNAL_LIBRARY_GPL_LIST
1743     $EXTERNAL_LIBRARY_NONFREE_LIST
1744     $EXTERNAL_LIBRARY_VERSION3_LIST
1745     $EXTERNAL_LIBRARY_GPLV3_LIST
1746     chromaprint
1747     gcrypt
1748     gnutls
1749     jni
1750     ladspa
1751     libaom
1752     libass
1753     libbluray
1754     libbs2b
1755     libcaca
1756     libcelt
1757     libcodec2
1758     libdav1d
1759     libdc1394
1760     libdrm
1761     libflite
1762     libfontconfig
1763     libfreetype
1764     libfribidi
1765     libgme
1766     libgsm
1767     libiec61883
1768     libilbc
1769     libjack
1770     libklvanc
1771     libkvazaar
1772     libmodplug
1773     libmp3lame
1774     libmysofa
1775     libopencv
1776     libopenh264
1777     libopenjpeg
1778     libopenmpt
1779     libopus
1780     libpulse
1781     librsvg
1782     librtmp
1783     libshine
1784     libsmbclient
1785     libsnappy
1786     libsoxr
1787     libspeex
1788     libsrt
1789     libssh
1790     libtensorflow
1791     libtesseract
1792     libtheora
1793     libtwolame
1794     libv4l2
1795     libvorbis
1796     libvpx
1797     libwavpack
1798     libwebp
1799     libxml2
1800     libzimg
1801     libzmq
1802     libzvbi
1803     lv2
1804     mediacodec
1805     openal
1806     opengl
1807     pocketsphinx
1808     vapoursynth
1809 "
1810
1811 HWACCEL_AUTODETECT_LIBRARY_LIST="
1812     amf
1813     audiotoolbox
1814     crystalhd
1815     cuda
1816     cuvid
1817     d3d11va
1818     dxva2
1819     ffnvcodec
1820     nvdec
1821     nvenc
1822     vaapi
1823     vdpau
1824     videotoolbox
1825     v4l2_m2m
1826     xvmc
1827 "
1828
1829 # catchall list of things that require external libs to link
1830 EXTRALIBS_LIST="
1831     cpu_init
1832     cws2fws
1833 "
1834
1835 HWACCEL_LIBRARY_NONFREE_LIST="
1836     cuda_nvcc
1837     cuda_sdk
1838     libnpp
1839 "
1840
1841 HWACCEL_LIBRARY_LIST="
1842     $HWACCEL_LIBRARY_NONFREE_LIST
1843     libmfx
1844     mmal
1845     omx
1846     opencl
1847 "
1848
1849 DOCUMENT_LIST="
1850     doc
1851     htmlpages
1852     manpages
1853     podpages
1854     txtpages
1855 "
1856
1857 FEATURE_LIST="
1858     ftrapv
1859     gray
1860     hardcoded_tables
1861     omx_rpi
1862     runtime_cpudetect
1863     safe_bitstream_reader
1864     shared
1865     small
1866     static
1867     swscale_alpha
1868 "
1869
1870 # this list should be kept in linking order
1871 LIBRARY_LIST="
1872     avdevice
1873     avfilter
1874     swscale
1875     postproc
1876     avformat
1877     avcodec
1878     swresample
1879     avresample
1880     avutil
1881 "
1882
1883 LICENSE_LIST="
1884     gpl
1885     nonfree
1886     version3
1887 "
1888
1889 PROGRAM_LIST="
1890     ffplay
1891     ffprobe
1892     ffmpeg
1893 "
1894
1895 SUBSYSTEM_LIST="
1896     dct
1897     dwt
1898     error_resilience
1899     faan
1900     fast_unaligned
1901     fft
1902     lsp
1903     lzo
1904     mdct
1905     pixelutils
1906     network
1907     rdft
1908 "
1909
1910 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1911 CONFIG_LIST="
1912     $DOCUMENT_LIST
1913     $EXAMPLE_LIST
1914     $EXTERNAL_LIBRARY_LIST
1915     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1916     $HWACCEL_LIBRARY_LIST
1917     $HWACCEL_AUTODETECT_LIBRARY_LIST
1918     $FEATURE_LIST
1919     $LICENSE_LIST
1920     $LIBRARY_LIST
1921     $PROGRAM_LIST
1922     $SUBSYSTEM_LIST
1923     autodetect
1924     fontconfig
1925     linux_perf
1926     memory_poisoning
1927     neon_clobber_test
1928     ossfuzz
1929     pic
1930     thumb
1931     valgrind_backtrace
1932     xmm_clobber_test
1933     $COMPONENT_LIST
1934 "
1935
1936 THREADS_LIST="
1937     pthreads
1938     os2threads
1939     w32threads
1940 "
1941
1942 ATOMICS_LIST="
1943     atomics_gcc
1944     atomics_suncc
1945     atomics_win32
1946 "
1947
1948 AUTODETECT_LIBS="
1949     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1950     $HWACCEL_AUTODETECT_LIBRARY_LIST
1951     $THREADS_LIST
1952 "
1953
1954 ARCH_LIST="
1955     aarch64
1956     alpha
1957     arm
1958     avr32
1959     avr32_ap
1960     avr32_uc
1961     bfin
1962     ia64
1963     m68k
1964     mips
1965     mips64
1966     parisc
1967     ppc
1968     ppc64
1969     s390
1970     sh4
1971     sparc
1972     sparc64
1973     tilegx
1974     tilepro
1975     tomi
1976     x86
1977     x86_32
1978     x86_64
1979 "
1980
1981 ARCH_EXT_LIST_ARM="
1982     armv5te
1983     armv6
1984     armv6t2
1985     armv8
1986     neon
1987     vfp
1988     vfpv3
1989     setend
1990 "
1991
1992 ARCH_EXT_LIST_MIPS="
1993     mipsfpu
1994     mips32r2
1995     mips32r5
1996     mips64r2
1997     mips32r6
1998     mips64r6
1999     mipsdsp
2000     mipsdspr2
2001     msa
2002 "
2003
2004 ARCH_EXT_LIST_LOONGSON="
2005     loongson2
2006     loongson3
2007     mmi
2008 "
2009
2010 ARCH_EXT_LIST_X86_SIMD="
2011     aesni
2012     amd3dnow
2013     amd3dnowext
2014     avx
2015     avx2
2016     avx512
2017     fma3
2018     fma4
2019     mmx
2020     mmxext
2021     sse
2022     sse2
2023     sse3
2024     sse4
2025     sse42
2026     ssse3
2027     xop
2028 "
2029
2030 ARCH_EXT_LIST_PPC="
2031     altivec
2032     dcbzl
2033     ldbrx
2034     power8
2035     ppc4xx
2036     vsx
2037 "
2038
2039 ARCH_EXT_LIST_X86="
2040     $ARCH_EXT_LIST_X86_SIMD
2041     cpunop
2042     i686
2043 "
2044
2045 ARCH_EXT_LIST="
2046     $ARCH_EXT_LIST_ARM
2047     $ARCH_EXT_LIST_PPC
2048     $ARCH_EXT_LIST_X86
2049     $ARCH_EXT_LIST_MIPS
2050     $ARCH_EXT_LIST_LOONGSON
2051 "
2052
2053 ARCH_FEATURES="
2054     aligned_stack
2055     fast_64bit
2056     fast_clz
2057     fast_cmov
2058     local_aligned
2059     simd_align_16
2060     simd_align_32
2061     simd_align_64
2062 "
2063
2064 BUILTIN_LIST="
2065     atomic_cas_ptr
2066     machine_rw_barrier
2067     MemoryBarrier
2068     mm_empty
2069     rdtsc
2070     sem_timedwait
2071     sync_val_compare_and_swap
2072 "
2073 HAVE_LIST_CMDLINE="
2074     inline_asm
2075     symver
2076     x86asm
2077 "
2078
2079 HAVE_LIST_PUB="
2080     bigendian
2081     fast_unaligned
2082 "
2083
2084 HEADERS_LIST="
2085     arpa_inet_h
2086     asm_types_h
2087     cdio_paranoia_h
2088     cdio_paranoia_paranoia_h
2089     cuda_h
2090     dispatch_dispatch_h
2091     dev_bktr_ioctl_bt848_h
2092     dev_bktr_ioctl_meteor_h
2093     dev_ic_bt8xx_h
2094     dev_video_bktr_ioctl_bt848_h
2095     dev_video_meteor_ioctl_meteor_h
2096     direct_h
2097     dirent_h
2098     dxgidebug_h
2099     dxva_h
2100     ES2_gl_h
2101     gsm_h
2102     io_h
2103     linux_perf_event_h
2104     machine_ioctl_bt848_h
2105     machine_ioctl_meteor_h
2106     malloc_h
2107     opencv2_core_core_c_h
2108     OpenGL_gl3_h
2109     poll_h
2110     sys_param_h
2111     sys_resource_h
2112     sys_select_h
2113     sys_soundcard_h
2114     sys_time_h
2115     sys_un_h
2116     sys_videoio_h
2117     termios_h
2118     udplite_h
2119     unistd_h
2120     valgrind_valgrind_h
2121     windows_h
2122     winsock2_h
2123 "
2124
2125 INTRINSICS_LIST="
2126     intrinsics_neon
2127 "
2128
2129 COMPLEX_FUNCS="
2130     cabs
2131     cexp
2132 "
2133
2134 MATH_FUNCS="
2135     atanf
2136     atan2f
2137     cbrt
2138     cbrtf
2139     copysign
2140     cosf
2141     erf
2142     exp2
2143     exp2f
2144     expf
2145     hypot
2146     isfinite
2147     isinf
2148     isnan
2149     ldexpf
2150     llrint
2151     llrintf
2152     log2
2153     log2f
2154     log10f
2155     lrint
2156     lrintf
2157     powf
2158     rint
2159     round
2160     roundf
2161     sinf
2162     trunc
2163     truncf
2164 "
2165
2166 SYSTEM_FEATURES="
2167     dos_paths
2168     libc_msvcrt
2169     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2170     section_data_rel_ro
2171     threads
2172     uwp
2173     winrt
2174 "
2175
2176 SYSTEM_FUNCS="
2177     access
2178     aligned_malloc
2179     arc4random
2180     clock_gettime
2181     closesocket
2182     CommandLineToArgvW
2183     fcntl
2184     getaddrinfo
2185     gethrtime
2186     getopt
2187     GetProcessAffinityMask
2188     GetProcessMemoryInfo
2189     GetProcessTimes
2190     getrusage
2191     GetSystemTimeAsFileTime
2192     gettimeofday
2193     glob
2194     glXGetProcAddress
2195     gmtime_r
2196     inet_aton
2197     isatty
2198     kbhit
2199     localtime_r
2200     lstat
2201     lzo1x_999_compress
2202     mach_absolute_time
2203     MapViewOfFile
2204     memalign
2205     mkstemp
2206     mmap
2207     mprotect
2208     nanosleep
2209     PeekNamedPipe
2210     posix_memalign
2211     pthread_cancel
2212     sched_getaffinity
2213     SecItemImport
2214     SetConsoleTextAttribute
2215     SetConsoleCtrlHandler
2216     setmode
2217     setrlimit
2218     Sleep
2219     strerror_r
2220     sysconf
2221     sysctl
2222     usleep
2223     UTGetOSTypeFromString
2224     VirtualAlloc
2225     wglGetProcAddress
2226 "
2227
2228 SYSTEM_LIBRARIES="
2229     bcrypt
2230     vaapi_drm
2231     vaapi_x11
2232     vdpau_x11
2233 "
2234
2235 TOOLCHAIN_FEATURES="
2236     as_arch_directive
2237     as_dn_directive
2238     as_fpu_directive
2239     as_func
2240     as_object_arch
2241     asm_mod_q
2242     blocks_extension
2243     ebp_available
2244     ebx_available
2245     gnu_as
2246     gnu_windres
2247     ibm_asm
2248     inline_asm_direct_symbol_refs
2249     inline_asm_labels
2250     inline_asm_nonlocal_labels
2251     pragma_deprecated
2252     rsync_contimeout
2253     symver_asm_label
2254     symver_gnu_asm
2255     vfp_args
2256     xform_asm
2257     xmm_clobbers
2258 "
2259
2260 TYPES_LIST="
2261     kCMVideoCodecType_HEVC
2262     kCVPixelFormatType_420YpCbCr10BiPlanarVideoRange
2263     socklen_t
2264     struct_addrinfo
2265     struct_group_source_req
2266     struct_ip_mreq_source
2267     struct_ipv6_mreq
2268     struct_msghdr_msg_flags
2269     struct_pollfd
2270     struct_rusage_ru_maxrss
2271     struct_sctp_event_subscribe
2272     struct_sockaddr_in6
2273     struct_sockaddr_sa_len
2274     struct_sockaddr_storage
2275     struct_stat_st_mtim_tv_nsec
2276     struct_v4l2_frmivalenum_discrete
2277 "
2278
2279 HAVE_LIST="
2280     $ARCH_EXT_LIST
2281     $(add_suffix _external $ARCH_EXT_LIST)
2282     $(add_suffix _inline   $ARCH_EXT_LIST)
2283     $ARCH_FEATURES
2284     $BUILTIN_LIST
2285     $COMPLEX_FUNCS
2286     $HAVE_LIST_CMDLINE
2287     $HAVE_LIST_PUB
2288     $HEADERS_LIST
2289     $INTRINSICS_LIST
2290     $MATH_FUNCS
2291     $SYSTEM_FEATURES
2292     $SYSTEM_FUNCS
2293     $SYSTEM_LIBRARIES
2294     $THREADS_LIST
2295     $TOOLCHAIN_FEATURES
2296     $TYPES_LIST
2297     makeinfo
2298     makeinfo_html
2299     opencl_d3d11
2300     opencl_drm_arm
2301     opencl_drm_beignet
2302     opencl_dxva2
2303     opencl_vaapi_beignet
2304     opencl_vaapi_intel_media
2305     perl
2306     pod2man
2307     texi2html
2308 "
2309
2310 # options emitted with CONFIG_ prefix but not available on the command line
2311 CONFIG_EXTRA="
2312     aandcttables
2313     ac3dsp
2314     adts_header
2315     audio_frame_queue
2316     audiodsp
2317     blockdsp
2318     bswapdsp
2319     cabac
2320     cbs
2321     cbs_av1
2322     cbs_h264
2323     cbs_h265
2324     cbs_jpeg
2325     cbs_mpeg2
2326     cbs_vp9
2327     dirac_parse
2328     dnn
2329     dvprofile
2330     exif
2331     faandct
2332     faanidct
2333     fdctdsp
2334     flacdsp
2335     fmtconvert
2336     frame_thread_encoder
2337     g722dsp
2338     golomb
2339     gplv3
2340     h263dsp
2341     h264chroma
2342     h264dsp
2343     h264parse
2344     h264pred
2345     h264qpel
2346     hevcparse
2347     hpeldsp
2348     huffman
2349     huffyuvdsp
2350     huffyuvencdsp
2351     idctdsp
2352     iirfilter
2353     mdct15
2354     intrax8
2355     iso_media
2356     ividsp
2357     jpegtables
2358     lgplv3
2359     libx262
2360     llauddsp
2361     llviddsp
2362     llvidencdsp
2363     lpc
2364     lzf
2365     me_cmp
2366     mpeg_er
2367     mpegaudio
2368     mpegaudiodsp
2369     mpegaudioheader
2370     mpegvideo
2371     mpegvideoenc
2372     mss34dsp
2373     pixblockdsp
2374     qpeldsp
2375     qsv
2376     qsvdec
2377     qsvenc
2378     qsvvpp
2379     rangecoder
2380     riffdec
2381     riffenc
2382     rtpdec
2383     rtpenc_chain
2384     rv34dsp
2385     scene_sad
2386     sinewin
2387     snappy
2388     srtp
2389     startcode
2390     texturedsp
2391     texturedspenc
2392     tpeldsp
2393     vaapi_1
2394     vaapi_encode
2395     vc1dsp
2396     videodsp
2397     vp3dsp
2398     vp56dsp
2399     vp8dsp
2400     wma_freqs
2401     wmv2dsp
2402 "
2403
2404 CMDLINE_SELECT="
2405     $ARCH_EXT_LIST
2406     $CONFIG_LIST
2407     $HAVE_LIST_CMDLINE
2408     $THREADS_LIST
2409     asm
2410     cross_compile
2411     debug
2412     extra_warnings
2413     logging
2414     lto
2415     optimizations
2416     rpath
2417     stripping
2418 "
2419
2420 PATHS_LIST="
2421     bindir
2422     datadir
2423     docdir
2424     incdir
2425     libdir
2426     mandir
2427     pkgconfigdir
2428     prefix
2429     shlibdir
2430     install_name_dir
2431 "
2432
2433 CMDLINE_SET="
2434     $PATHS_LIST
2435     ar
2436     arch
2437     as
2438     assert_level
2439     build_suffix
2440     cc
2441     objcc
2442     cpu
2443     cross_prefix
2444     custom_allocator
2445     cxx
2446     dep_cc
2447     doxygen
2448     env
2449     extra_version
2450     gas
2451     host_cc
2452     host_cflags
2453     host_extralibs
2454     host_ld
2455     host_ldflags
2456     host_os
2457     ignore_tests
2458     install
2459     ld
2460     ln_s
2461     logfile
2462     malloc_prefix
2463     nm
2464     optflags
2465     nvcc
2466     nvccflags
2467     pkg_config
2468     pkg_config_flags
2469     progs_suffix
2470     random_seed
2471     ranlib
2472     samples
2473     strip
2474     sws_max_filter_size
2475     sysinclude
2476     sysroot
2477     target_exec
2478     target_os
2479     target_path
2480     target_samples
2481     tempprefix
2482     toolchain
2483     valgrind
2484     windres
2485     x86asmexe
2486 "
2487
2488 CMDLINE_APPEND="
2489     extra_cflags
2490     extra_cxxflags
2491     extra_objcflags
2492     host_cppflags
2493 "
2494
2495 # code dependency declarations
2496
2497 # architecture extensions
2498
2499 armv5te_deps="arm"
2500 armv6_deps="arm"
2501 armv6t2_deps="arm"
2502 armv8_deps="aarch64"
2503 neon_deps_any="aarch64 arm"
2504 intrinsics_neon_deps="neon"
2505 vfp_deps_any="aarch64 arm"
2506 vfpv3_deps="vfp"
2507 setend_deps="arm"
2508
2509 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2510
2511 altivec_deps="ppc"
2512 dcbzl_deps="ppc"
2513 ldbrx_deps="ppc"
2514 ppc4xx_deps="ppc"
2515 vsx_deps="altivec"
2516 power8_deps="vsx"
2517
2518 loongson2_deps="mips"
2519 loongson3_deps="mips"
2520 mips32r2_deps="mips"
2521 mips32r5_deps="mips"
2522 mips32r6_deps="mips"
2523 mips64r2_deps="mips"
2524 mips64r6_deps="mips"
2525 mipsfpu_deps="mips"
2526 mipsdsp_deps="mips"
2527 mipsdspr2_deps="mips"
2528 mmi_deps="mips"
2529 msa_deps="mipsfpu"
2530
2531 cpunop_deps="i686"
2532 x86_64_select="i686"
2533 x86_64_suggest="fast_cmov"
2534
2535 amd3dnow_deps="mmx"
2536 amd3dnowext_deps="amd3dnow"
2537 i686_deps="x86"
2538 mmx_deps="x86"
2539 mmxext_deps="mmx"
2540 sse_deps="mmxext"
2541 sse2_deps="sse"
2542 sse3_deps="sse2"
2543 ssse3_deps="sse3"
2544 sse4_deps="ssse3"
2545 sse42_deps="sse4"
2546 aesni_deps="sse42"
2547 avx_deps="sse42"
2548 xop_deps="avx"
2549 fma3_deps="avx"
2550 fma4_deps="avx"
2551 avx2_deps="avx"
2552 avx512_deps="avx2"
2553
2554 mmx_external_deps="x86asm"
2555 mmx_inline_deps="inline_asm x86"
2556 mmx_suggest="mmx_external mmx_inline"
2557
2558 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2559     eval dep=\$${ext}_deps
2560     eval ${ext}_external_deps='"${dep}_external"'
2561     eval ${ext}_inline_deps='"${dep}_inline"'
2562     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2563 done
2564
2565 aligned_stack_if_any="aarch64 ppc x86"
2566 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2567 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2568 fast_unaligned_if_any="aarch64 ppc x86"
2569 simd_align_16_if_any="altivec neon sse"
2570 simd_align_32_if_any="avx"
2571 simd_align_64_if_any="avx512"
2572
2573 # system capabilities
2574 linux_perf_deps="linux_perf_event_h"
2575 symver_if_any="symver_asm_label symver_gnu_asm"
2576 valgrind_backtrace_conflict="optimizations"
2577 valgrind_backtrace_deps="valgrind_valgrind_h"
2578
2579 # threading support
2580 atomics_gcc_if="sync_val_compare_and_swap"
2581 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2582 atomics_win32_if="MemoryBarrier"
2583 atomics_native_if_any="$ATOMICS_LIST"
2584 w32threads_deps="atomics_native"
2585 threads_if_any="$THREADS_LIST"
2586
2587 # subsystems
2588 cbs_av1_select="cbs"
2589 cbs_h264_select="cbs golomb"
2590 cbs_h265_select="cbs golomb"
2591 cbs_jpeg_select="cbs"
2592 cbs_mpeg2_select="cbs"
2593 cbs_vp9_select="cbs"
2594 dct_select="rdft"
2595 dirac_parse_select="golomb"
2596 dnn_suggest="libtensorflow"
2597 error_resilience_select="me_cmp"
2598 faandct_deps="faan"
2599 faandct_select="fdctdsp"
2600 faanidct_deps="faan"
2601 faanidct_select="idctdsp"
2602 h264dsp_select="startcode"
2603 hevcparse_select="golomb"
2604 frame_thread_encoder_deps="encoders threads"
2605 intrax8_select="blockdsp idctdsp"
2606 mdct_select="fft"
2607 mdct15_select="fft"
2608 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2609 mpeg_er_select="error_resilience"
2610 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2611 mpegaudiodsp_select="dct"
2612 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2613 mpegvideoenc_select="aandcttables me_cmp mpegvideo pixblockdsp qpeldsp"
2614 vc1dsp_select="h264chroma qpeldsp startcode"
2615 rdft_select="fft"
2616
2617 # decoders / encoders
2618 aac_decoder_select="adts_header mdct15 mdct sinewin"
2619 aac_fixed_decoder_select="adts_header mdct sinewin"
2620 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2621 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2622 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2623 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2624 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2625 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2626 adpcm_g722_decoder_select="g722dsp"
2627 adpcm_g722_encoder_select="g722dsp"
2628 aic_decoder_select="golomb idctdsp"
2629 alac_encoder_select="lpc"
2630 als_decoder_select="bswapdsp"
2631 amrnb_decoder_select="lsp"
2632 amrwb_decoder_select="lsp"
2633 amv_decoder_select="sp5x_decoder exif"
2634 amv_encoder_select="jpegtables mpegvideoenc"
2635 ape_decoder_select="bswapdsp llauddsp"
2636 apng_decoder_deps="zlib"
2637 apng_encoder_deps="zlib"
2638 apng_encoder_select="llvidencdsp"
2639 aptx_decoder_select="audio_frame_queue"
2640 aptx_encoder_select="audio_frame_queue"
2641 aptx_hd_decoder_select="audio_frame_queue"
2642 aptx_hd_encoder_select="audio_frame_queue"
2643 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2644 asv1_encoder_select="aandcttables bswapdsp fdctdsp pixblockdsp"
2645 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2646 asv2_encoder_select="aandcttables bswapdsp fdctdsp pixblockdsp"
2647 atrac1_decoder_select="mdct sinewin"
2648 atrac3_decoder_select="mdct"
2649 atrac3p_decoder_select="mdct sinewin"
2650 atrac9_decoder_select="mdct"
2651 avrn_decoder_select="exif jpegtables"
2652 bink_decoder_select="blockdsp hpeldsp"
2653 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2654 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2655 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2656 clearvideo_decoder_select="idctdsp"
2657 cllc_decoder_select="bswapdsp"
2658 comfortnoise_encoder_select="lpc"
2659 cook_decoder_select="audiodsp mdct sinewin"
2660 cscd_decoder_select="lzo"
2661 cscd_decoder_suggest="zlib"
2662 dca_decoder_select="mdct"
2663 dds_decoder_select="texturedsp"
2664 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2665 dnxhd_decoder_select="blockdsp idctdsp"
2666 dnxhd_encoder_select="blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2667 dolby_e_decoder_select="mdct"
2668 dvvideo_decoder_select="dvprofile idctdsp"
2669 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2670 dxa_decoder_deps="zlib"
2671 dxv_decoder_select="lzf texturedsp"
2672 eac3_decoder_select="ac3_decoder"
2673 eac3_encoder_select="ac3_encoder"
2674 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2675 eatgq_decoder_select="aandcttables"
2676 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2677 exr_decoder_deps="zlib"
2678 ffv1_decoder_select="rangecoder"
2679 ffv1_encoder_select="rangecoder"
2680 ffvhuff_decoder_select="huffyuv_decoder"
2681 ffvhuff_encoder_select="huffyuv_encoder"
2682 fic_decoder_select="golomb"
2683 flac_decoder_select="flacdsp"
2684 flac_encoder_select="bswapdsp flacdsp lpc"
2685 flashsv2_decoder_deps="zlib"
2686 flashsv2_encoder_deps="zlib"
2687 flashsv_decoder_deps="zlib"
2688 flashsv_encoder_deps="zlib"
2689 flv_decoder_select="h263_decoder"
2690 flv_encoder_select="h263_encoder"
2691 fourxm_decoder_select="blockdsp bswapdsp"
2692 fraps_decoder_select="bswapdsp huffman"
2693 g2m_decoder_deps="zlib"
2694 g2m_decoder_select="blockdsp idctdsp jpegtables"
2695 g729_decoder_select="audiodsp"
2696 h261_decoder_select="mpegvideo"
2697 h261_encoder_select="mpegvideoenc"
2698 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2699 h263_encoder_select="h263dsp mpegvideoenc"
2700 h263i_decoder_select="h263_decoder"
2701 h263p_decoder_select="h263_decoder"
2702 h263p_encoder_select="h263_encoder"
2703 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2704 h264_decoder_suggest="error_resilience"
2705 hap_decoder_select="snappy texturedsp"
2706 hap_encoder_deps="libsnappy"
2707 hap_encoder_select="texturedspenc"
2708 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2709 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2710 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2711 hymt_decoder_select="huffyuv_decoder"
2712 iac_decoder_select="imc_decoder"
2713 imc_decoder_select="bswapdsp fft mdct sinewin"
2714 indeo3_decoder_select="hpeldsp"
2715 indeo4_decoder_select="ividsp"
2716 indeo5_decoder_select="ividsp"
2717 interplay_video_decoder_select="hpeldsp"
2718 jpegls_decoder_select="mjpeg_decoder"
2719 jv_decoder_select="blockdsp"
2720 lagarith_decoder_select="llviddsp"
2721 ljpeg_encoder_select="idctdsp jpegtables mpegvideoenc"
2722 lscr_decoder_deps="zlib"
2723 magicyuv_decoder_select="llviddsp"
2724 magicyuv_encoder_select="llvidencdsp"
2725 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2726 metasound_decoder_select="lsp mdct sinewin"
2727 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2728 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2729 mjpeg_encoder_select="jpegtables mpegvideoenc"
2730 mjpegb_decoder_select="mjpeg_decoder"
2731 mlp_decoder_select="mlp_parser"
2732 mlp_encoder_select="lpc audio_frame_queue"
2733 motionpixels_decoder_select="bswapdsp"
2734 mp1_decoder_select="mpegaudio"
2735 mp1float_decoder_select="mpegaudio"
2736 mp2_decoder_select="mpegaudio"
2737 mp2float_decoder_select="mpegaudio"
2738 mp3_decoder_select="mpegaudio"
2739 mp3adu_decoder_select="mpegaudio"
2740 mp3adufloat_decoder_select="mpegaudio"
2741 mp3float_decoder_select="mpegaudio"
2742 mp3on4_decoder_select="mpegaudio"
2743 mp3on4float_decoder_select="mpegaudio"
2744 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2745 mpc8_decoder_select="mpegaudiodsp"
2746 mpegvideo_decoder_select="mpegvideo"
2747 mpeg1video_decoder_select="mpegvideo"
2748 mpeg1video_encoder_select="mpegvideoenc h263dsp"
2749 mpeg2video_decoder_select="mpegvideo"
2750 mpeg2video_encoder_select="mpegvideoenc h263dsp"
2751 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2752 mpeg4_encoder_select="h263_encoder"
2753 msa1_decoder_select="mss34dsp"
2754 mscc_decoder_deps="zlib"
2755 msmpeg4v1_decoder_select="h263_decoder"
2756 msmpeg4v2_decoder_select="h263_decoder"
2757 msmpeg4v2_encoder_select="h263_encoder"
2758 msmpeg4v3_decoder_select="h263_decoder"
2759 msmpeg4v3_encoder_select="h263_encoder"
2760 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2761 mts2_decoder_select="mss34dsp"
2762 mwsc_decoder_deps="zlib"
2763 mxpeg_decoder_select="mjpeg_decoder"
2764 nellymoser_decoder_select="mdct sinewin"
2765 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2766 nuv_decoder_select="idctdsp lzo"
2767 on2avc_decoder_select="mdct"
2768 opus_decoder_deps="swresample"
2769 opus_decoder_select="mdct15"
2770 opus_encoder_select="audio_frame_queue mdct15"
2771 png_decoder_deps="zlib"
2772 png_encoder_deps="zlib"
2773 png_encoder_select="llvidencdsp"
2774 prores_decoder_select="blockdsp idctdsp"
2775 prores_encoder_select="fdctdsp"
2776 qcelp_decoder_select="lsp"
2777 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2778 ra_144_decoder_select="audiodsp"
2779 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2780 ralf_decoder_select="golomb"
2781 rasc_decoder_deps="zlib"
2782 rawvideo_decoder_select="bswapdsp"
2783 rscc_decoder_deps="zlib"
2784 rtjpeg_decoder_select="me_cmp"
2785 rv10_decoder_select="h263_decoder"
2786 rv10_encoder_select="h263_encoder"
2787 rv20_decoder_select="h263_decoder"
2788 rv20_encoder_select="h263_encoder"
2789 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2790 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2791 screenpresso_decoder_deps="zlib"
2792 shorten_decoder_select="bswapdsp"
2793 sipr_decoder_select="lsp"
2794 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2795 snow_encoder_select="dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2796 sonic_decoder_select="golomb rangecoder"
2797 sonic_encoder_select="golomb rangecoder"
2798 sonic_ls_encoder_select="golomb rangecoder"
2799 sp5x_decoder_select="mjpeg_decoder"
2800 speedhq_decoder_select="mpegvideo"
2801 srgc_decoder_deps="zlib"
2802 svq1_decoder_select="hpeldsp"
2803 svq1_encoder_select="hpeldsp me_cmp mpegvideoenc"
2804 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2805 svq3_decoder_suggest="zlib"
2806 tak_decoder_select="audiodsp"
2807 tdsc_decoder_deps="zlib"
2808 tdsc_decoder_select="mjpeg_decoder"
2809 theora_decoder_select="vp3_decoder"
2810 thp_decoder_select="mjpeg_decoder"
2811 tiff_decoder_suggest="zlib lzma"
2812 tiff_encoder_suggest="zlib"
2813 truehd_decoder_select="mlp_parser"
2814 truehd_encoder_select="lpc audio_frame_queue"
2815 truemotion2_decoder_select="bswapdsp"
2816 truespeech_decoder_select="bswapdsp"
2817 tscc_decoder_deps="zlib"
2818 twinvq_decoder_select="mdct lsp sinewin"
2819 txd_decoder_select="texturedsp"
2820 utvideo_decoder_select="bswapdsp llviddsp"
2821 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2822 vble_decoder_select="llviddsp"
2823 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2824 vc1image_decoder_select="vc1_decoder"
2825 vorbis_decoder_select="mdct"
2826 vorbis_encoder_select="audio_frame_queue mdct"
2827 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2828 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2829 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2830 vp6a_decoder_select="vp6_decoder"
2831 vp6f_decoder_select="vp6_decoder"
2832 vp7_decoder_select="h264pred videodsp vp8dsp"
2833 vp8_decoder_select="h264pred videodsp vp8dsp"
2834 vp9_decoder_select="videodsp vp9_parser vp9_superframe_split_bsf"
2835 wcmv_decoder_deps="zlib"
2836 webp_decoder_select="vp8_decoder exif"
2837 wmalossless_decoder_select="llauddsp"
2838 wmapro_decoder_select="mdct sinewin wma_freqs"
2839 wmav1_decoder_select="mdct sinewin wma_freqs"
2840 wmav1_encoder_select="mdct sinewin wma_freqs"
2841 wmav2_decoder_select="mdct sinewin wma_freqs"
2842 wmav2_encoder_select="mdct sinewin wma_freqs"
2843 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2844 wmv1_decoder_select="h263_decoder"
2845 wmv1_encoder_select="h263_encoder"
2846 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2847 wmv2_encoder_select="h263_encoder wmv2dsp"
2848 wmv3_decoder_select="vc1_decoder"
2849 wmv3image_decoder_select="wmv3_decoder"
2850 xma1_decoder_select="wmapro_decoder"
2851 xma2_decoder_select="wmapro_decoder"
2852 zerocodec_decoder_deps="zlib"
2853 zlib_decoder_deps="zlib"
2854 zlib_encoder_deps="zlib"
2855 zmbv_decoder_deps="zlib"
2856 zmbv_encoder_deps="zlib"
2857
2858 # hardware accelerators
2859 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2860 cuda_deps="ffnvcodec"
2861 cuvid_deps="ffnvcodec"
2862 d3d11va_deps="dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2863 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2864 ffnvcodec_deps_any="libdl LoadLibrary"
2865 nvdec_deps="ffnvcodec"
2866 vaapi_x11_deps="xlib"
2867 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2868 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2869 xvmc_deps="X11_extensions_XvMClib_h"
2870
2871 h263_vaapi_hwaccel_deps="vaapi"
2872 h263_vaapi_hwaccel_select="h263_decoder"
2873 h263_videotoolbox_hwaccel_deps="videotoolbox"
2874 h263_videotoolbox_hwaccel_select="h263_decoder"
2875 h264_d3d11va_hwaccel_deps="d3d11va"
2876 h264_d3d11va_hwaccel_select="h264_decoder"
2877 h264_d3d11va2_hwaccel_deps="d3d11va"
2878 h264_d3d11va2_hwaccel_select="h264_decoder"
2879 h264_dxva2_hwaccel_deps="dxva2"
2880 h264_dxva2_hwaccel_select="h264_decoder"
2881 h264_nvdec_hwaccel_deps="nvdec"
2882 h264_nvdec_hwaccel_select="h264_decoder"
2883 h264_vaapi_hwaccel_deps="vaapi"
2884 h264_vaapi_hwaccel_select="h264_decoder"
2885 h264_vdpau_hwaccel_deps="vdpau"
2886 h264_vdpau_hwaccel_select="h264_decoder"
2887 h264_videotoolbox_hwaccel_deps="videotoolbox"
2888 h264_videotoolbox_hwaccel_select="h264_decoder"
2889 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2890 hevc_d3d11va_hwaccel_select="hevc_decoder"
2891 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2892 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2893 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2894 hevc_dxva2_hwaccel_select="hevc_decoder"
2895 hevc_nvdec_hwaccel_deps="nvdec"
2896 hevc_nvdec_hwaccel_select="hevc_decoder"
2897 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2898 hevc_vaapi_hwaccel_select="hevc_decoder"
2899 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2900 hevc_vdpau_hwaccel_select="hevc_decoder"
2901 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2902 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2903 mjpeg_nvdec_hwaccel_deps="nvdec"
2904 mjpeg_nvdec_hwaccel_select="mjpeg_decoder"
2905 mjpeg_vaapi_hwaccel_deps="vaapi"
2906 mjpeg_vaapi_hwaccel_select="mjpeg_decoder"
2907 mpeg_xvmc_hwaccel_deps="xvmc"
2908 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2909 mpeg1_nvdec_hwaccel_deps="nvdec"
2910 mpeg1_nvdec_hwaccel_select="mpeg1video_decoder"
2911 mpeg1_vdpau_hwaccel_deps="vdpau"
2912 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2913 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2914 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2915 mpeg1_xvmc_hwaccel_deps="xvmc"
2916 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2917 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2918 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2919 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2920 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2921 mpeg2_dxva2_hwaccel_deps="dxva2"
2922 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2923 mpeg2_nvdec_hwaccel_deps="nvdec"
2924 mpeg2_nvdec_hwaccel_select="mpeg2video_decoder"
2925 mpeg2_vaapi_hwaccel_deps="vaapi"
2926 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2927 mpeg2_vdpau_hwaccel_deps="vdpau"
2928 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2929 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2930 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2931 mpeg2_xvmc_hwaccel_deps="xvmc"
2932 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2933 mpeg4_nvdec_hwaccel_deps="nvdec"
2934 mpeg4_nvdec_hwaccel_select="mpeg4_decoder"
2935 mpeg4_vaapi_hwaccel_deps="vaapi"
2936 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2937 mpeg4_vdpau_hwaccel_deps="vdpau"
2938 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2939 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2940 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2941 vc1_d3d11va_hwaccel_deps="d3d11va"
2942 vc1_d3d11va_hwaccel_select="vc1_decoder"
2943 vc1_d3d11va2_hwaccel_deps="d3d11va"
2944 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2945 vc1_dxva2_hwaccel_deps="dxva2"
2946 vc1_dxva2_hwaccel_select="vc1_decoder"
2947 vc1_nvdec_hwaccel_deps="nvdec"
2948 vc1_nvdec_hwaccel_select="vc1_decoder"
2949 vc1_vaapi_hwaccel_deps="vaapi"
2950 vc1_vaapi_hwaccel_select="vc1_decoder"
2951 vc1_vdpau_hwaccel_deps="vdpau"
2952 vc1_vdpau_hwaccel_select="vc1_decoder"
2953 vp8_nvdec_hwaccel_deps="nvdec"
2954 vp8_nvdec_hwaccel_select="vp8_decoder"
2955 vp8_vaapi_hwaccel_deps="vaapi"
2956 vp8_vaapi_hwaccel_select="vp8_decoder"
2957 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2958 vp9_d3d11va_hwaccel_select="vp9_decoder"
2959 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2960 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2961 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2962 vp9_dxva2_hwaccel_select="vp9_decoder"
2963 vp9_nvdec_hwaccel_deps="nvdec"
2964 vp9_nvdec_hwaccel_select="vp9_decoder"
2965 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2966 vp9_vaapi_hwaccel_select="vp9_decoder"
2967 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2968 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2969 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2970 wmv3_nvdec_hwaccel_select="vc1_nvdec_hwaccel"
2971 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2972 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2973
2974 # hardware-accelerated codecs
2975 omx_deps="libdl pthreads"
2976 omx_rpi_select="omx"
2977 qsv_deps="libmfx"
2978 qsvdec_select="qsv"
2979 qsvenc_select="qsv"
2980 qsvvpp_select="qsv"
2981 vaapi_encode_deps="vaapi"
2982 v4l2_m2m_deps="linux_videodev2_h sem_timedwait"
2983
2984 hwupload_cuda_filter_deps="ffnvcodec"
2985 scale_npp_filter_deps="ffnvcodec libnpp"
2986 scale_cuda_filter_deps="ffnvcodec cuda_nvcc"
2987 thumbnail_cuda_filter_deps="ffnvcodec cuda_nvcc"
2988 transpose_npp_filter_deps="ffnvcodec libnpp"
2989
2990 amf_deps_any="libdl LoadLibrary"
2991 nvenc_deps="ffnvcodec"
2992 nvenc_deps_any="libdl LoadLibrary"
2993 nvenc_encoder_deps="nvenc"
2994
2995 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
2996 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
2997 h264_amf_encoder_deps="amf"
2998 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2999 h264_cuvid_decoder_deps="cuvid"
3000 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
3001 h264_mediacodec_decoder_deps="mediacodec"
3002 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
3003 h264_mmal_decoder_deps="mmal"
3004 h264_nvenc_encoder_deps="nvenc"
3005 h264_omx_encoder_deps="omx"
3006 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec"
3007 h264_qsv_encoder_select="qsvenc"
3008 h264_rkmpp_decoder_deps="rkmpp"
3009 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
3010 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
3011 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
3012 h264_v4l2m2m_decoder_select="h264_mp4toannexb_bsf"
3013 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
3014 hevc_amf_encoder_deps="amf"
3015 hevc_cuvid_decoder_deps="cuvid"
3016 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
3017 hevc_mediacodec_decoder_deps="mediacodec"
3018 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
3019 hevc_nvenc_encoder_deps="nvenc"
3020 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec"
3021 hevc_qsv_encoder_select="hevcparse qsvenc"
3022 hevc_rkmpp_decoder_deps="rkmpp"
3023 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
3024 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
3025 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
3026 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
3027 hevc_v4l2m2m_decoder_select="hevc_mp4toannexb_bsf"
3028 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
3029 mjpeg_cuvid_decoder_deps="cuvid"
3030 mjpeg_qsv_encoder_deps="libmfx"
3031 mjpeg_qsv_encoder_select="qsvenc"
3032 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
3033 mjpeg_vaapi_encoder_select="cbs_jpeg jpegtables vaapi_encode"
3034 mpeg1_cuvid_decoder_deps="cuvid"
3035 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
3036 mpeg2_crystalhd_decoder_select="crystalhd"
3037 mpeg2_cuvid_decoder_deps="cuvid"
3038 mpeg2_mmal_decoder_deps="mmal"
3039 mpeg2_mediacodec_decoder_deps="mediacodec"
3040 mpeg2_qsv_decoder_select="qsvdec mpegvideo_parser"
3041 mpeg2_qsv_encoder_select="qsvenc"
3042 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
3043 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
3044 mpeg4_crystalhd_decoder_select="crystalhd"
3045 mpeg4_cuvid_decoder_deps="cuvid"
3046 mpeg4_mediacodec_decoder_deps="mediacodec"
3047 mpeg4_mmal_decoder_deps="mmal"
3048 mpeg4_omx_encoder_deps="omx"
3049 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
3050 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
3051 msmpeg4_crystalhd_decoder_select="crystalhd"
3052 nvenc_h264_encoder_select="h264_nvenc_encoder"
3053 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
3054 vc1_crystalhd_decoder_select="crystalhd"
3055 vc1_cuvid_decoder_deps="cuvid"
3056 vc1_mmal_decoder_deps="mmal"
3057 vc1_qsv_decoder_select="qsvdec vc1_parser"
3058 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
3059 vp8_cuvid_decoder_deps="cuvid"
3060 vp8_mediacodec_decoder_deps="mediacodec"
3061 vp8_qsv_decoder_select="qsvdec vp8_parser"
3062 vp8_rkmpp_decoder_deps="rkmpp"
3063 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
3064 vp8_vaapi_encoder_select="vaapi_encode"
3065 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
3066 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
3067 vp9_cuvid_decoder_deps="cuvid"
3068 vp9_mediacodec_decoder_deps="mediacodec"
3069 vp9_rkmpp_decoder_deps="rkmpp"
3070 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
3071 vp9_vaapi_encoder_select="vaapi_encode"
3072 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
3073 wmv3_crystalhd_decoder_select="crystalhd"
3074
3075 # parsers
3076 aac_parser_select="adts_header"
3077 av1_parser_select="cbs_av1"
3078 h264_parser_select="golomb h264dsp h264parse"
3079 hevc_parser_select="hevcparse"
3080 mpegaudio_parser_select="mpegaudioheader"
3081 mpegvideo_parser_select="mpegvideo"
3082 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
3083 vc1_parser_select="vc1dsp"
3084
3085 # bitstream_filters
3086 aac_adtstoasc_bsf_select="adts_header"
3087 av1_frame_split_bsf_select="cbs_av1"
3088 av1_metadata_bsf_select="cbs_av1"
3089 eac3_core_bsf_select="ac3_parser"
3090 filter_units_bsf_select="cbs"
3091 h264_metadata_bsf_deps="const_nan"
3092 h264_metadata_bsf_select="cbs_h264"
3093 h264_redundant_pps_bsf_select="cbs_h264"
3094 hevc_metadata_bsf_select="cbs_h265"
3095 mjpeg2jpeg_bsf_select="jpegtables"
3096 mpeg2_metadata_bsf_select="cbs_mpeg2"
3097 trace_headers_bsf_select="cbs"
3098 vp9_metadata_bsf_select="cbs_vp9"
3099
3100 # external libraries
3101 aac_at_decoder_deps="audiotoolbox"
3102 aac_at_decoder_select="aac_adtstoasc_bsf"
3103 ac3_at_decoder_deps="audiotoolbox"
3104 ac3_at_decoder_select="ac3_parser"
3105 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
3106 alac_at_decoder_deps="audiotoolbox"
3107 amr_nb_at_decoder_deps="audiotoolbox"
3108 avisynth_deps_any="libdl LoadLibrary"
3109 avisynth_demuxer_deps="avisynth"
3110 avisynth_demuxer_select="riffdec"
3111 eac3_at_decoder_deps="audiotoolbox"
3112 eac3_at_decoder_select="ac3_parser"
3113 gsm_ms_at_decoder_deps="audiotoolbox"
3114 ilbc_at_decoder_deps="audiotoolbox"
3115 mp1_at_decoder_deps="audiotoolbox"
3116 mp2_at_decoder_deps="audiotoolbox"
3117 mp3_at_decoder_deps="audiotoolbox"
3118 mp1_at_decoder_select="mpegaudioheader"
3119 mp2_at_decoder_select="mpegaudioheader"
3120 mp3_at_decoder_select="mpegaudioheader"
3121 pcm_alaw_at_decoder_deps="audiotoolbox"
3122 pcm_mulaw_at_decoder_deps="audiotoolbox"
3123 qdmc_at_decoder_deps="audiotoolbox"
3124 qdm2_at_decoder_deps="audiotoolbox"
3125 aac_at_encoder_deps="audiotoolbox"
3126 aac_at_encoder_select="audio_frame_queue"
3127 alac_at_encoder_deps="audiotoolbox"
3128 alac_at_encoder_select="audio_frame_queue"
3129 ilbc_at_encoder_deps="audiotoolbox"
3130 ilbc_at_encoder_select="audio_frame_queue"
3131 pcm_alaw_at_encoder_deps="audiotoolbox"
3132 pcm_alaw_at_encoder_select="audio_frame_queue"
3133 pcm_mulaw_at_encoder_deps="audiotoolbox"
3134 pcm_mulaw_at_encoder_select="audio_frame_queue"
3135 chromaprint_muxer_deps="chromaprint"
3136 h264_videotoolbox_encoder_deps="pthreads"
3137 h264_videotoolbox_encoder_select="videotoolbox_encoder"
3138 hevc_videotoolbox_encoder_deps="pthreads"
3139 hevc_videotoolbox_encoder_select="videotoolbox_encoder"
3140 libaom_av1_decoder_deps="libaom"
3141 libaom_av1_encoder_deps="libaom"
3142 libaom_av1_encoder_select="extract_extradata_bsf"
3143 libaribb24_decoder_deps="libaribb24"
3144 libcelt_decoder_deps="libcelt"
3145 libcodec2_decoder_deps="libcodec2"
3146 libcodec2_encoder_deps="libcodec2"
3147 libdav1d_decoder_deps="libdav1d"
3148 libdavs2_decoder_deps="libdavs2"
3149 libfdk_aac_decoder_deps="libfdk_aac"
3150 libfdk_aac_encoder_deps="libfdk_aac"
3151 libfdk_aac_encoder_select="audio_frame_queue"
3152 libgme_demuxer_deps="libgme"
3153 libgsm_decoder_deps="libgsm"
3154 libgsm_encoder_deps="libgsm"
3155 libgsm_ms_decoder_deps="libgsm"
3156 libgsm_ms_encoder_deps="libgsm"
3157 libilbc_decoder_deps="libilbc"
3158 libilbc_encoder_deps="libilbc"
3159 libkvazaar_encoder_deps="libkvazaar"
3160 libmodplug_demuxer_deps="libmodplug"
3161 libmp3lame_encoder_deps="libmp3lame"
3162 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
3163 libopencore_amrnb_decoder_deps="libopencore_amrnb"
3164 libopencore_amrnb_encoder_deps="libopencore_amrnb"
3165 libopencore_amrnb_encoder_select="audio_frame_queue"
3166 libopencore_amrwb_decoder_deps="libopencore_amrwb"
3167 libopenh264_decoder_deps="libopenh264"
3168 libopenh264_decoder_select="h264_mp4toannexb_bsf"
3169 libopenh264_encoder_deps="libopenh264"
3170 libopenjpeg_decoder_deps="libopenjpeg"
3171 libopenjpeg_encoder_deps="libopenjpeg"
3172 libopenmpt_demuxer_deps="libopenmpt"
3173 libopus_decoder_deps="libopus"
3174 libopus_encoder_deps="libopus"
3175 libopus_encoder_select="audio_frame_queue"
3176 librsvg_decoder_deps="librsvg"
3177 libshine_encoder_deps="libshine"
3178 libshine_encoder_select="audio_frame_queue"
3179 libspeex_decoder_deps="libspeex"
3180 libspeex_encoder_deps="libspeex"
3181 libspeex_encoder_select="audio_frame_queue"
3182 libtheora_encoder_deps="libtheora"
3183 libtwolame_encoder_deps="libtwolame"
3184 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
3185 libvorbis_decoder_deps="libvorbis"
3186 libvorbis_encoder_deps="libvorbis libvorbisenc"
3187 libvorbis_encoder_select="audio_frame_queue"
3188 libvpx_vp8_decoder_deps="libvpx"
3189 libvpx_vp8_encoder_deps="libvpx"
3190 libvpx_vp9_decoder_deps="libvpx"
3191 libvpx_vp9_encoder_deps="libvpx"
3192 libwavpack_encoder_deps="libwavpack"
3193 libwavpack_encoder_select="audio_frame_queue"
3194 libwebp_encoder_deps="libwebp"
3195 libwebp_anim_encoder_deps="libwebp"
3196 libx262_encoder_deps="libx262"
3197 libx264_encoder_deps="libx264"
3198 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
3199 libx264rgb_encoder_select="libx264_encoder"
3200 libx265_encoder_deps="libx265"
3201 libxavs_encoder_deps="libxavs"
3202 libxavs2_encoder_deps="libxavs2"
3203 libxvid_encoder_deps="libxvid"
3204 libzvbi_teletext_decoder_deps="libzvbi"
3205 vapoursynth_demuxer_deps="vapoursynth"
3206 videotoolbox_suggest="coreservices"
3207 videotoolbox_deps="corefoundation coremedia corevideo"
3208 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
3209
3210 # demuxers / muxers
3211 ac3_demuxer_select="ac3_parser"
3212 aiff_muxer_select="iso_media"
3213 asf_demuxer_select="riffdec"
3214 asf_o_demuxer_select="riffdec"
3215 asf_muxer_select="riffenc"
3216 asf_stream_muxer_select="asf_muxer"
3217 avi_demuxer_select="iso_media riffdec exif"
3218 avi_muxer_select="riffenc"
3219 caf_demuxer_select="iso_media riffdec"
3220 caf_muxer_select="iso_media"
3221 dash_muxer_select="mp4_muxer"
3222 dash_demuxer_deps="libxml2"
3223 dirac_demuxer_select="dirac_parser"
3224 dts_demuxer_select="dca_parser"
3225 dtshd_demuxer_select="dca_parser"
3226 dv_demuxer_select="dvprofile"
3227 dv_muxer_select="dvprofile"
3228 dxa_demuxer_select="riffdec"
3229 eac3_demuxer_select="ac3_parser"
3230 f4v_muxer_select="mov_muxer"
3231 fifo_muxer_deps="threads"
3232 flac_demuxer_select="flac_parser"
3233 hds_muxer_select="flv_muxer"
3234 hls_muxer_select="mpegts_muxer"
3235 hls_muxer_suggest="gcrypt openssl"
3236 image2_alias_pix_demuxer_select="image2_demuxer"
3237 image2_brender_pix_demuxer_select="image2_demuxer"
3238 ipod_muxer_select="mov_muxer"
3239 ismv_muxer_select="mov_muxer"
3240 ivf_muxer_select="av1_metadata_bsf vp9_superframe_bsf"
3241 matroska_audio_muxer_select="matroska_muxer"
3242 matroska_demuxer_select="iso_media riffdec"
3243 matroska_demuxer_suggest="bzlib lzo zlib"
3244 matroska_muxer_select="iso_media riffenc"
3245 mmf_muxer_select="riffenc"
3246 mov_demuxer_select="iso_media riffdec"
3247 mov_demuxer_suggest="zlib"
3248 mov_muxer_select="iso_media riffenc rtpenc_chain"
3249 mp3_demuxer_select="mpegaudio_parser"
3250 mp3_muxer_select="mpegaudioheader"
3251 mp4_muxer_select="mov_muxer"
3252 mpegts_demuxer_select="iso_media"
3253 mpegts_muxer_select="adts_muxer latm_muxer"
3254 mpegtsraw_demuxer_select="mpegts_demuxer"
3255 mxf_d10_muxer_select="mxf_muxer"
3256 mxf_opatom_muxer_select="mxf_muxer"
3257 nut_muxer_select="riffenc"
3258 nuv_demuxer_select="riffdec"
3259 oga_muxer_select="ogg_muxer"
3260 ogg_demuxer_select="dirac_parse"
3261 ogv_muxer_select="ogg_muxer"
3262 opus_muxer_select="ogg_muxer"
3263 psp_muxer_select="mov_muxer"
3264 rtp_demuxer_select="sdp_demuxer"
3265 rtp_muxer_select="golomb"
3266 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3267 rtsp_demuxer_select="http_protocol rtpdec"
3268 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3269 sap_demuxer_select="sdp_demuxer"
3270 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3271 sdp_demuxer_select="rtpdec"
3272 smoothstreaming_muxer_select="ismv_muxer"
3273 spdif_demuxer_select="adts_header"
3274 spdif_muxer_select="adts_header"
3275 spx_muxer_select="ogg_muxer"
3276 swf_demuxer_suggest="zlib"
3277 tak_demuxer_select="tak_parser"
3278 tg2_muxer_select="mov_muxer"
3279 tgp_muxer_select="mov_muxer"
3280 vobsub_demuxer_select="mpegps_demuxer"
3281 w64_demuxer_select="wav_demuxer"
3282 w64_muxer_select="wav_muxer"
3283 wav_demuxer_select="riffdec"
3284 wav_muxer_select="riffenc"
3285 webm_muxer_select="iso_media riffenc"
3286 webm_dash_manifest_demuxer_select="matroska_demuxer"
3287 wtv_demuxer_select="mpegts_demuxer riffdec"
3288 wtv_muxer_select="mpegts_muxer riffenc"
3289 xmv_demuxer_select="riffdec"
3290 xwma_demuxer_select="riffdec"
3291
3292 # indevs / outdevs
3293 android_camera_indev_deps="android camera2ndk mediandk pthreads"
3294 android_camera_indev_extralibs="-landroid -lcamera2ndk -lmediandk"
3295 alsa_indev_deps="alsa"
3296 alsa_outdev_deps="alsa"
3297 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3298 avfoundation_indev_suggest="coregraphics applicationservices"
3299 avfoundation_indev_extralibs="-framework Foundation"
3300 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3301 caca_outdev_deps="libcaca"
3302 decklink_deps_any="libdl LoadLibrary"
3303 decklink_indev_deps="decklink threads"
3304 decklink_indev_extralibs="-lstdc++"
3305 decklink_outdev_deps="decklink threads"
3306 decklink_outdev_suggest="libklvanc"
3307 decklink_outdev_extralibs="-lstdc++"
3308 dshow_indev_deps="IBaseFilter"
3309 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3310 fbdev_indev_deps="linux_fb_h"
3311 fbdev_outdev_deps="linux_fb_h"
3312 gdigrab_indev_deps="CreateDIBSection"
3313 gdigrab_indev_extralibs="-lgdi32"
3314 gdigrab_indev_select="bmp_decoder"
3315 iec61883_indev_deps="libiec61883"
3316 jack_indev_deps="libjack"
3317 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3318 kmsgrab_indev_deps="libdrm"
3319 lavfi_indev_deps="avfilter"
3320 libcdio_indev_deps="libcdio"
3321 libdc1394_indev_deps="libdc1394"
3322 openal_indev_deps="openal"
3323 opengl_outdev_deps="opengl"
3324 opengl_outdev_suggest="sdl2"
3325 oss_indev_deps_any="sys_soundcard_h"
3326 oss_outdev_deps_any="sys_soundcard_h"
3327 pulse_indev_deps="libpulse"
3328 pulse_outdev_deps="libpulse"
3329 sdl2_outdev_deps="sdl2"
3330 sndio_indev_deps="sndio"
3331 sndio_outdev_deps="sndio"
3332 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3333 v4l2_indev_suggest="libv4l2"
3334 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3335 v4l2_outdev_suggest="libv4l2"
3336 vfwcap_indev_deps="vfw32 vfwcap_defines"
3337 xcbgrab_indev_deps="libxcb"
3338 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3339 xv_outdev_deps="xlib"
3340
3341 # protocols
3342 async_protocol_deps="threads"
3343 bluray_protocol_deps="libbluray"
3344 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3345 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl mbedtls"
3346 ffrtmpcrypt_protocol_select="tcp_protocol"
3347 ffrtmphttp_protocol_conflict="librtmp_protocol"
3348 ffrtmphttp_protocol_select="http_protocol"
3349 ftp_protocol_select="tcp_protocol"
3350 gopher_protocol_select="network"
3351 http_protocol_select="tcp_protocol"
3352 http_protocol_suggest="zlib"
3353 httpproxy_protocol_select="tcp_protocol"
3354 httpproxy_protocol_suggest="zlib"
3355 https_protocol_select="tls_protocol"
3356 https_protocol_suggest="zlib"
3357 icecast_protocol_select="http_protocol"
3358 mmsh_protocol_select="http_protocol"
3359 mmst_protocol_select="network"
3360 rtmp_protocol_conflict="librtmp_protocol"
3361 rtmp_protocol_select="tcp_protocol"
3362 rtmp_protocol_suggest="zlib"
3363 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3364 rtmpe_protocol_suggest="zlib"
3365 rtmps_protocol_conflict="librtmp_protocol"
3366 rtmps_protocol_select="tls_protocol"
3367 rtmps_protocol_suggest="zlib"
3368 rtmpt_protocol_select="ffrtmphttp_protocol"
3369 rtmpt_protocol_suggest="zlib"
3370 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3371 rtmpte_protocol_suggest="zlib"
3372 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3373 rtmpts_protocol_suggest="zlib"
3374 rtp_protocol_select="udp_protocol"
3375 schannel_conflict="openssl gnutls libtls mbedtls"
3376 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3377 sctp_protocol_select="network"
3378 securetransport_conflict="openssl gnutls libtls mbedtls"
3379 srtp_protocol_select="rtp_protocol srtp"
3380 tcp_protocol_select="network"
3381 tls_protocol_deps_any="gnutls openssl schannel securetransport libtls mbedtls"
3382 tls_protocol_select="tcp_protocol"
3383 udp_protocol_select="network"
3384 udplite_protocol_select="network"
3385 unix_protocol_deps="sys_un_h"
3386 unix_protocol_select="network"
3387
3388 # external library protocols
3389 librtmp_protocol_deps="librtmp"
3390 librtmpe_protocol_deps="librtmp"
3391 librtmps_protocol_deps="librtmp"
3392 librtmpt_protocol_deps="librtmp"
3393 librtmpte_protocol_deps="librtmp"
3394 libsmbclient_protocol_deps="libsmbclient gplv3"
3395 libsrt_protocol_deps="libsrt"
3396 libsrt_protocol_select="network"
3397 libssh_protocol_deps="libssh"
3398 libtls_conflict="openssl gnutls mbedtls"
3399
3400 # filters
3401 afftdn_filter_deps="avcodec"
3402 afftdn_filter_select="fft"
3403 afftfilt_filter_deps="avcodec"
3404 afftfilt_filter_select="fft"
3405 afir_filter_deps="avcodec"
3406 afir_filter_select="fft"
3407 amovie_filter_deps="avcodec avformat"
3408 aresample_filter_deps="swresample"
3409 asr_filter_deps="pocketsphinx"
3410 ass_filter_deps="libass"
3411 atempo_filter_deps="avcodec"
3412 atempo_filter_select="rdft"
3413 avgblur_opencl_filter_deps="opencl"
3414 azmq_filter_deps="libzmq"
3415 blackframe_filter_deps="gpl"
3416 bm3d_filter_deps="avcodec"
3417 bm3d_filter_select="dct"
3418 boxblur_filter_deps="gpl"
3419 boxblur_opencl_filter_deps="opencl gpl"
3420 bs2b_filter_deps="libbs2b"
3421 colorkey_opencl_filter_deps="opencl"
3422 colormatrix_filter_deps="gpl"
3423 convolution_opencl_filter_deps="opencl"
3424 convolve_filter_deps="avcodec"
3425 convolve_filter_select="fft"
3426 coreimage_filter_deps="coreimage appkit"
3427 coreimage_filter_extralibs="-framework OpenGL"
3428 coreimagesrc_filter_deps="coreimage appkit"
3429 coreimagesrc_filter_extralibs="-framework OpenGL"
3430 cover_rect_filter_deps="avcodec avformat gpl"
3431 cropdetect_filter_deps="gpl"
3432 deconvolve_filter_deps="avcodec"
3433 deconvolve_filter_select="fft"
3434 deinterlace_qsv_filter_deps="libmfx"
3435 deinterlace_vaapi_filter_deps="vaapi"
3436 delogo_filter_deps="gpl"
3437 denoise_vaapi_filter_deps="vaapi"
3438 deshake_filter_select="pixelutils"
3439 dilation_opencl_filter_deps="opencl"
3440 drawtext_filter_deps="libfreetype"
3441 drawtext_filter_suggest="libfontconfig libfribidi"
3442 elbg_filter_deps="avcodec"
3443 eq_filter_deps="gpl"
3444 erosion_opencl_filter_deps="opencl"
3445 fftfilt_filter_deps="avcodec"
3446 fftfilt_filter_select="rdft"
3447 fftdnoiz_filter_deps="avcodec"
3448 fftdnoiz_filter_select="fft"
3449 find_rect_filter_deps="avcodec avformat gpl"
3450 firequalizer_filter_deps="avcodec"
3451 firequalizer_filter_select="rdft"
3452 flite_filter_deps="libflite"
3453 framerate_filter_select="scene_sad"
3454 freezedetect_filter_select="scene_sad"
3455 frei0r_filter_deps="frei0r libdl"
3456 frei0r_src_filter_deps="frei0r libdl"
3457 fspp_filter_deps="gpl"
3458 geq_filter_deps="gpl"
3459 histeq_filter_deps="gpl"
3460 hqdn3d_filter_deps="gpl"
3461 interlace_filter_deps="gpl"
3462 kerndeint_filter_deps="gpl"
3463 ladspa_filter_deps="ladspa libdl"
3464 lensfun_filter_deps="liblensfun version3"
3465 lv2_filter_deps="lv2"
3466 mcdeint_filter_deps="avcodec gpl"
3467 movie_filter_deps="avcodec avformat"
3468 mpdecimate_filter_deps="gpl"
3469 mpdecimate_filter_select="pixelutils"
3470 minterpolate_filter_select="scene_sad"
3471 mptestsrc_filter_deps="gpl"
3472 negate_filter_deps="lut_filter"
3473 nlmeans_opencl_filter_deps="opencl"
3474 nnedi_filter_deps="gpl"
3475 ocr_filter_deps="libtesseract"
3476 ocv_filter_deps="libopencv"
3477 openclsrc_filter_deps="opencl"
3478 overlay_opencl_filter_deps="opencl"
3479 overlay_qsv_filter_deps="libmfx"
3480 overlay_qsv_filter_select="qsvvpp"
3481 owdenoise_filter_deps="gpl"
3482 pan_filter_deps="swresample"
3483 perspective_filter_deps="gpl"
3484 phase_filter_deps="gpl"
3485 pp7_filter_deps="gpl"
3486 pp_filter_deps="gpl postproc"
3487 prewitt_opencl_filter_deps="opencl"
3488 procamp_vaapi_filter_deps="vaapi"
3489 program_opencl_filter_deps="opencl"
3490 pullup_filter_deps="gpl"
3491 removelogo_filter_deps="avcodec avformat swscale"
3492 repeatfields_filter_deps="gpl"
3493 resample_filter_deps="avresample"
3494 roberts_opencl_filter_deps="opencl"
3495 rubberband_filter_deps="librubberband"
3496 sab_filter_deps="gpl swscale"
3497 scale2ref_filter_deps="swscale"
3498 scale_filter_deps="swscale"
3499 scale_qsv_filter_deps="libmfx"
3500 select_filter_select="scene_sad"
3501 sharpness_vaapi_filter_deps="vaapi"
3502 showcqt_filter_deps="avcodec avformat swscale"
3503 showcqt_filter_suggest="libfontconfig libfreetype"
3504 showcqt_filter_select="fft"
3505 showfreqs_filter_deps="avcodec"
3506 showfreqs_filter_select="fft"
3507 showspectrum_filter_deps="avcodec"
3508 showspectrum_filter_select="fft"
3509 showspectrumpic_filter_deps="avcodec"
3510 showspectrumpic_filter_select="fft"
3511 signature_filter_deps="gpl avcodec avformat"
3512 smartblur_filter_deps="gpl swscale"
3513 sobel_opencl_filter_deps="opencl"
3514 sofalizer_filter_deps="libmysofa avcodec"
3515 sofalizer_filter_select="fft"
3516 spectrumsynth_filter_deps="avcodec"
3517 spectrumsynth_filter_select="fft"
3518 spp_filter_deps="gpl avcodec"
3519 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3520 sr_filter_deps="avformat swscale"
3521 sr_filter_select="dnn"
3522 stereo3d_filter_deps="gpl"
3523 subtitles_filter_deps="avformat avcodec libass"
3524 super2xsai_filter_deps="gpl"
3525 pixfmts_super2xsai_test_deps="super2xsai_filter"
3526 tinterlace_filter_deps="gpl"
3527 tinterlace_merge_test_deps="tinterlace_filter"
3528 tinterlace_pad_test_deps="tinterlace_filter"
3529 tonemap_filter_deps="const_nan"
3530 tonemap_opencl_filter_deps="opencl const_nan"
3531 transpose_opencl_filter_deps="opencl"
3532 transpose_vaapi_filter_deps="vaapi VAProcPipelineCaps_rotation_flags"
3533 unsharp_opencl_filter_deps="opencl"
3534 uspp_filter_deps="gpl avcodec"
3535 vaguedenoiser_filter_deps="gpl"
3536 vidstabdetect_filter_deps="libvidstab"
3537 vidstabtransform_filter_deps="libvidstab"
3538 libvmaf_filter_deps="libvmaf pthreads"
3539 zmq_filter_deps="libzmq"
3540 zoompan_filter_deps="swscale"
3541 zscale_filter_deps="libzimg const_nan"
3542 scale_vaapi_filter_deps="vaapi"
3543 vpp_qsv_filter_deps="libmfx"
3544 vpp_qsv_filter_select="qsvvpp"
3545 yadif_cuda_filter_deps="ffnvcodec cuda_nvcc"
3546
3547 # examples
3548 avio_dir_cmd_deps="avformat avutil"
3549 avio_reading_deps="avformat avcodec avutil"
3550 decode_audio_example_deps="avcodec avutil"
3551 decode_video_example_deps="avcodec avutil"
3552 demuxing_decoding_example_deps="avcodec avformat avutil"
3553 encode_audio_example_deps="avcodec avutil"
3554 encode_video_example_deps="avcodec avutil"
3555 extract_mvs_example_deps="avcodec avformat avutil"
3556 filter_audio_example_deps="avfilter avutil"
3557 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3558 filtering_video_example_deps="avfilter avcodec avformat avutil"
3559 http_multiclient_example_deps="avformat avutil fork"
3560 hw_decode_example_deps="avcodec avformat avutil"
3561 metadata_example_deps="avformat avutil"
3562 muxing_example_deps="avcodec avformat avutil swscale"
3563 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3564 remuxing_example_deps="avcodec avformat avutil"
3565 resampling_audio_example_deps="avutil swresample"
3566 scaling_video_example_deps="avutil swscale"
3567 transcode_aac_example_deps="avcodec avformat swresample"
3568 transcoding_example_deps="avfilter avcodec avformat avutil"
3569 vaapi_encode_example_deps="avcodec avutil h264_vaapi_encoder"
3570 vaapi_transcode_example_deps="avcodec avformat avutil h264_vaapi_encoder"
3571
3572 # EXTRALIBS_LIST
3573 cpu_init_extralibs="pthreads_extralibs"
3574 cws2fws_extralibs="zlib_extralibs"
3575
3576 # libraries, in any order
3577 avcodec_deps="avutil"
3578 avcodec_suggest="libm"
3579 avcodec_select="null_bsf"
3580 avdevice_deps="avformat avcodec avutil"
3581 avdevice_suggest="libm"
3582 avfilter_deps="avutil"
3583 avfilter_suggest="libm"
3584 avformat_deps="avcodec avutil"
3585 avformat_suggest="libm network zlib"
3586 avresample_deps="avutil"
3587 avresample_suggest="libm"
3588 avutil_suggest="clock_gettime ffnvcodec libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia bcrypt"
3589 postproc_deps="avutil gpl"
3590 postproc_suggest="libm"
3591 swresample_deps="avutil"
3592 swresample_suggest="libm libsoxr"
3593 swscale_deps="avutil"
3594 swscale_suggest="libm"
3595
3596 avcodec_extralibs="pthreads_extralibs iconv_extralibs dxva2_extralibs"
3597 avfilter_extralibs="pthreads_extralibs"
3598 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3599
3600 # programs
3601 ffmpeg_deps="avcodec avfilter avformat"
3602 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3603                hflip_filter null_filter
3604                transpose_filter trim_filter vflip_filter"
3605 ffmpeg_suggest="ole32 psapi shell32"
3606 ffplay_deps="avcodec avformat swscale swresample sdl2"
3607 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3608 ffplay_suggest="shell32"
3609 ffprobe_deps="avcodec avformat"
3610 ffprobe_suggest="shell32"
3611
3612 # documentation
3613 podpages_deps="perl"
3614 manpages_deps="perl pod2man"
3615 htmlpages_deps="perl"
3616 htmlpages_deps_any="makeinfo_html texi2html"
3617 txtpages_deps="perl makeinfo"
3618 doc_deps_any="manpages htmlpages podpages txtpages"
3619
3620 # default parameters
3621
3622 logfile="ffbuild/config.log"
3623
3624 # installation paths
3625 prefix_default="/usr/local"
3626 bindir_default='${prefix}/bin'
3627 datadir_default='${prefix}/share/ffmpeg'
3628 docdir_default='${prefix}/share/doc/ffmpeg'
3629 incdir_default='${prefix}/include'
3630 libdir_default='${prefix}/lib'
3631 mandir_default='${prefix}/share/man'
3632
3633 # toolchain
3634 ar_default="ar"
3635 cc_default="gcc"
3636 cxx_default="g++"
3637 host_cc_default="gcc"
3638 doxygen_default="doxygen"
3639 install="install"
3640 ln_s_default="ln -s -f"
3641 nm_default="nm -g"
3642 pkg_config_default=pkg-config
3643 ranlib_default="ranlib"
3644 strip_default="strip"
3645 version_script='--version-script'
3646 objformat="elf32"
3647 x86asmexe_default="nasm"
3648 windres_default="windres"
3649 nvcc_default="nvcc"
3650 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3651 striptype="direct"
3652
3653 # OS
3654 target_os_default=$(tolower $(uname -s))
3655 host_os=$target_os_default
3656
3657 # machine
3658 if test "$target_os_default" = aix; then
3659     arch_default=$(uname -p)
3660     strip_default="strip -X32_64"
3661     nm_default="nm -g -X32_64"
3662 else
3663     arch_default=$(uname -m)
3664 fi
3665 cpu="generic"
3666 intrinsics="none"
3667
3668 # configurable options
3669 enable $PROGRAM_LIST
3670 enable $DOCUMENT_LIST
3671 enable $EXAMPLE_LIST
3672 enable $(filter_out avresample $LIBRARY_LIST)
3673 enable stripping
3674
3675 enable asm
3676 enable debug
3677 enable doc
3678 enable faan faandct faanidct
3679 enable optimizations
3680 enable runtime_cpudetect
3681 enable safe_bitstream_reader
3682 enable static
3683 enable swscale_alpha
3684 enable valgrind_backtrace
3685
3686 sws_max_filter_size_default=256
3687 set_default sws_max_filter_size
3688
3689 # internal components are enabled by default
3690 enable $EXTRALIBS_LIST
3691
3692 # Avoid external, non-system, libraries getting enabled by dependency resolution
3693 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3694
3695 # build settings
3696 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3697 LIBPREF="lib"
3698 LIBSUF=".a"
3699 FULLNAME='$(NAME)$(BUILDSUF)'
3700 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3701 SLIBPREF="lib"
3702 SLIBSUF=".so"
3703 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3704 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3705 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3706 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3707 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3708 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3709 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3710
3711 asflags_filter=echo
3712 cflags_filter=echo
3713 ldflags_filter=echo
3714
3715 AS_C='-c'
3716 AS_O='-o $@'
3717 CC_C='-c'
3718 CC_E='-E -o $@'
3719 CC_O='-o $@'
3720 CXX_C='-c'
3721 CXX_O='-o $@'
3722 OBJCC_C='-c'
3723 OBJCC_E='-E -o $@'
3724 OBJCC_O='-o $@'
3725 X86ASM_O='-o $@'
3726 LD_O='-o $@'
3727 LD_LIB='-l%'
3728 LD_PATH='-L'
3729 HOSTCC_C='-c'
3730 HOSTCC_E='-E -o $@'
3731 HOSTCC_O='-o $@'
3732 HOSTLD_O='-o $@'
3733 NVCC_C='-c'
3734 NVCC_O='-o $@'
3735
3736 host_extralibs='-lm'
3737 host_cflags_filter=echo
3738 host_ldflags_filter=echo
3739
3740 target_path='$(CURDIR)'
3741
3742 # since the object filename is not given with the -MM flag, the compiler
3743 # is only able to print the basename, and we must add the path ourselves
3744 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3745 DEPFLAGS='-MM'
3746
3747 mkdir -p ffbuild
3748
3749 # find source path
3750 if test -f configure; then
3751     source_path=.
3752 elif test -f src/configure; then
3753     source_path=src
3754 else
3755     source_path=$(cd $(dirname "$0"); pwd)
3756     case "$source_path" in
3757         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3758     esac
3759     test -e "$source_path/config.h" &&
3760         die "Out of tree builds are impossible with config.h in source dir."
3761 fi
3762
3763 for v in "$@"; do
3764     r=${v#*=}
3765     l=${v%"$r"}
3766     r=$(sh_quote "$r")
3767     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3768 done
3769
3770 find_things_extern(){
3771     thing=$1
3772     pattern=$2
3773     file=$source_path/$3
3774     out=${4:-$thing}
3775     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$out/p" "$file"
3776 }
3777
3778 find_filters_extern(){
3779     file=$source_path/$1
3780     sed -n 's/^extern AVFilter ff_[avfsinkrc]\{2,5\}_\([[:alnum:]_]\{1,\}\);/\1_filter/p' $file
3781 }
3782
3783 FILTER_LIST=$(find_filters_extern libavfilter/allfilters.c)
3784 OUTDEV_LIST=$(find_things_extern muxer AVOutputFormat libavdevice/alldevices.c outdev)
3785 INDEV_LIST=$(find_things_extern demuxer AVInputFormat libavdevice/alldevices.c indev)
3786 MUXER_LIST=$(find_things_extern muxer AVOutputFormat libavformat/allformats.c)
3787 DEMUXER_LIST=$(find_things_extern demuxer AVInputFormat libavformat/allformats.c)
3788 ENCODER_LIST=$(find_things_extern encoder AVCodec libavcodec/allcodecs.c)
3789 DECODER_LIST=$(find_things_extern decoder AVCodec libavcodec/allcodecs.c)
3790 CODEC_LIST="
3791     $ENCODER_LIST
3792     $DECODER_LIST
3793 "
3794 PARSER_LIST=$(find_things_extern parser AVCodecParser libavcodec/parsers.c)
3795 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3796 HWACCEL_LIST=$(find_things_extern hwaccel AVHWAccel libavcodec/hwaccels.h)
3797 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3798
3799 AVCODEC_COMPONENTS_LIST="
3800     $BSF_LIST
3801     $DECODER_LIST
3802     $ENCODER_LIST
3803     $HWACCEL_LIST
3804     $PARSER_LIST
3805 "
3806
3807 AVDEVICE_COMPONENTS_LIST="
3808     $INDEV_LIST
3809     $OUTDEV_LIST
3810 "
3811
3812 AVFILTER_COMPONENTS_LIST="
3813     $FILTER_LIST
3814 "
3815
3816 AVFORMAT_COMPONENTS_LIST="
3817     $DEMUXER_LIST
3818     $MUXER_LIST
3819     $PROTOCOL_LIST
3820 "
3821
3822 ALL_COMPONENTS="
3823     $AVCODEC_COMPONENTS_LIST
3824     $AVDEVICE_COMPONENTS_LIST
3825     $AVFILTER_COMPONENTS_LIST
3826     $AVFORMAT_COMPONENTS_LIST
3827 "
3828
3829 for n in $COMPONENT_LIST; do
3830     v=$(toupper ${n%s})_LIST
3831     eval enable \$$v
3832     eval ${n}_if_any="\$$v"
3833 done
3834
3835 enable $ARCH_EXT_LIST
3836
3837 die_unknown(){
3838     echo "Unknown option \"$1\"."
3839     echo "See $0 --help for available options."
3840     exit 1
3841 }
3842
3843 print_in_columns() {
3844     cols=$(expr $ncols / 24)
3845     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3846 }
3847
3848 show_list() {
3849     suffix=_$1
3850     shift
3851     echo $* | sed s/$suffix//g | print_in_columns
3852     exit 0
3853 }
3854
3855 rand_list(){
3856     IFS=', '
3857     set -- $*
3858     unset IFS
3859     for thing; do
3860         comp=${thing%:*}
3861         prob=${thing#$comp}
3862         prob=${prob#:}
3863         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3864         echo "prob ${prob:-0.5}"
3865         printf '%s\n' $comp
3866     done
3867 }
3868
3869 do_random(){
3870     action=$1
3871     shift
3872     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3873     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3874 }
3875
3876 for opt do
3877     optval="${opt#*=}"
3878     case "$opt" in
3879         --extra-ldflags=*)
3880             add_ldflags $optval
3881         ;;
3882         --extra-ldexeflags=*)
3883             add_ldexeflags $optval
3884         ;;
3885         --extra-ldsoflags=*)
3886             add_ldsoflags $optval
3887         ;;
3888         --extra-ldlibflags=*)
3889             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3890                  "removed in the future. Use --extra-ldsoflags instead."
3891             add_ldsoflags $optval
3892         ;;
3893         --extra-libs=*)
3894             add_extralibs $optval
3895         ;;
3896         --disable-devices)
3897             disable $INDEV_LIST $OUTDEV_LIST
3898         ;;
3899         --enable-debug=*)
3900             debuglevel="$optval"
3901         ;;
3902         --disable-programs)
3903             disable $PROGRAM_LIST
3904         ;;
3905         --disable-everything)
3906             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3907         ;;
3908         --disable-all)
3909             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3910             disable $LIBRARY_LIST $PROGRAM_LIST doc
3911             enable avutil
3912         ;;
3913         --enable-random|--disable-random)
3914             action=${opt%%-random}
3915             do_random ${action#--} $COMPONENT_LIST
3916         ;;
3917         --enable-random=*|--disable-random=*)
3918             action=${opt%%-random=*}
3919             do_random ${action#--} $optval
3920         ;;
3921         --enable-sdl)
3922             enable sdl2
3923         ;;
3924         --enable-*=*|--disable-*=*)
3925             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3926             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3927             eval list=\$$(toupper $thing)_LIST
3928             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3929             list=$(filter "$name" $list)
3930             [ "$list" = "" ] && warn "Option $opt did not match anything"
3931             test $action = enable && warn_if_gets_disabled $list
3932             $action $list
3933         ;;
3934         --enable-yasm|--disable-yasm)
3935             warn "The ${opt} option is only provided for compatibility and will be\n"\
3936                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3937             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3938         ;;
3939         --yasmexe=*)
3940             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3941                  "removed in the future. Use --x86asmexe instead."
3942             x86asmexe="$optval"
3943         ;;
3944         --enable-?*|--disable-?*)
3945             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3946             if is_in $option $COMPONENT_LIST; then
3947                 test $action = disable && action=unset
3948                 eval $action \$$(toupper ${option%s})_LIST
3949             elif is_in $option $CMDLINE_SELECT; then
3950                 $action $option
3951             else
3952                 die_unknown $opt
3953             fi
3954         ;;
3955         --list-*)
3956             NAME="${opt#--list-}"
3957             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3958             NAME=${NAME%s}
3959             eval show_list $NAME \$$(toupper $NAME)_LIST
3960         ;;
3961         --help|-h) show_help
3962         ;;
3963         --quiet|-q) quiet=yes
3964         ;;
3965         --fatal-warnings) enable fatal_warnings
3966         ;;
3967         --libfuzzer=*)
3968             libfuzzer_path="$optval"
3969         ;;
3970         *)
3971             optname="${opt%%=*}"
3972             optname="${optname#--}"
3973             optname=$(echo "$optname" | sed 's/-/_/g')
3974             if is_in $optname $CMDLINE_SET; then
3975                 eval $optname='$optval'
3976             elif is_in $optname $CMDLINE_APPEND; then
3977                 append $optname "$optval"
3978             else
3979                 die_unknown $opt
3980             fi
3981         ;;
3982     esac
3983 done
3984
3985 for e in $env; do
3986     eval "export $e"
3987 done
3988
3989 if disabled autodetect; then
3990
3991     # Unless iconv is explicitely disabled by the user, we still want to probe
3992     # for the iconv from the libc.
3993     disabled iconv || enable libc_iconv
3994
3995     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3996     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3997 fi
3998 # Mark specifically enabled, but normally autodetected libraries as requested.
3999 for lib in $AUTODETECT_LIBS; do
4000     enabled $lib && request $lib
4001 done
4002 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
4003 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
4004 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
4005
4006 disabled logging && logfile=/dev/null
4007
4008 # command line configuration sanity checks
4009
4010 # we need to build at least one lib type
4011 if ! enabled_any static shared; then
4012     cat <<EOF
4013 At least one library type must be built.
4014 Specify --enable-static to build the static libraries or --enable-shared to
4015 build the shared libraries as well. To only build the shared libraries specify
4016 --disable-static in addition to --enable-shared.
4017 EOF
4018     exit 1
4019 fi
4020
4021 die_license_disabled() {
4022     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
4023 }
4024
4025 die_license_disabled_gpl() {
4026     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
4027 }
4028
4029 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
4030 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
4031
4032 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
4033 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
4034
4035 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4036
4037 if enabled nonfree; then
4038     license="nonfree and unredistributable"
4039 elif enabled gplv3; then
4040     license="GPL version 3 or later"
4041 elif enabled lgplv3; then
4042     license="LGPL version 3 or later"
4043 elif enabled gpl; then
4044     license="GPL version 2 or later"
4045 else
4046     license="LGPL version 2.1 or later"
4047 fi
4048
4049 enabled_all gnutls openssl &&
4050     die "GnuTLS and OpenSSL must not be enabled at the same time."
4051
4052 enabled_all gnutls mbedtls &&
4053     die "GnuTLS and mbedTLS must not be enabled at the same time."
4054
4055 enabled_all openssl mbedtls &&
4056     die "OpenSSL and mbedTLS must not be enabled at the same time."
4057
4058 # Disable all the library-specific components if the library itself
4059 # is disabled, see AVCODEC_LIST and following _LIST variables.
4060
4061 disable_components(){
4062     disabled ${1} && disable $(
4063         eval components="\$$(toupper ${1})_COMPONENTS"
4064         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
4065     )
4066 }
4067
4068 map 'disable_components $v' $LIBRARY_LIST
4069
4070 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
4071 set >> $logfile
4072
4073 test -n "$valgrind" && toolchain="valgrind-memcheck"
4074
4075 enabled ossfuzz && ! echo $CFLAGS | grep -q -- "-fsanitize="  && ! echo $CFLAGS | grep -q -- "-fcoverage-mapping" &&{
4076     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
4077     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
4078 }
4079
4080 case "$toolchain" in
4081     *-asan)
4082         cc_default="${toolchain%-asan}"
4083         add_cflags  -fsanitize=address
4084         add_ldflags -fsanitize=address
4085     ;;
4086     *-msan)
4087         cc_default="${toolchain%-msan}"
4088         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
4089         add_ldflags -fsanitize=memory
4090     ;;
4091     *-tsan)
4092         cc_default="${toolchain%-tsan}"
4093         add_cflags  -fsanitize=thread
4094         add_ldflags -fsanitize=thread
4095         case "$toolchain" in
4096             gcc-tsan)
4097                 add_cflags  -fPIC
4098                 add_ldflags -fPIC
4099                 ;;
4100         esac
4101     ;;
4102     *-usan)
4103         cc_default="${toolchain%-usan}"
4104         add_cflags  -fsanitize=undefined
4105         add_ldflags -fsanitize=undefined
4106     ;;
4107     valgrind-*)
4108         target_exec_default="valgrind"
4109         case "$toolchain" in
4110             valgrind-massif)
4111                 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"
4112                 ;;
4113             valgrind-memcheck)
4114                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
4115                 ;;
4116         esac
4117     ;;
4118     msvc)
4119         # Check whether the current MSVC version needs the C99 converter.
4120         # From MSVC 2013 (compiler major version 18) onwards, it does actually
4121         # support enough of C99 to build ffmpeg. Default to the new
4122         # behaviour if the regexp was unable to match anything, since this
4123         # successfully parses the version number of existing supported
4124         # versions that require the converter (MSVC 2010 and 2012).
4125         cl_major_ver=$(cl.exe 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
4126         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
4127             cc_default="cl.exe"
4128             cxx_default="cl.exe"
4129         else
4130             die "Unsupported MSVC version (2013 or newer required)"
4131         fi
4132         ld_default="$source_path/compat/windows/mslink"
4133         nm_default="dumpbin.exe -symbols"
4134         ar_default="lib.exe"
4135         case "$arch" in
4136         aarch64|arm64)
4137             as_default="armasm64.exe"
4138             ;;
4139         arm*)
4140             as_default="armasm.exe"
4141             ;;
4142         esac
4143         target_os_default="win32"
4144         # Use a relative path for TMPDIR. This makes sure all the
4145         # ffconf temp files are written with a relative path, avoiding
4146         # issues with msys/win32 path conversion for MSVC parameters
4147         # such as -Fo<file> or -out:<file>.
4148         TMPDIR=.
4149     ;;
4150     icl)
4151         cc_default="icl"
4152         ld_default="xilink"
4153         nm_default="dumpbin -symbols"
4154         ar_default="xilib"
4155         target_os_default="win32"
4156         TMPDIR=.
4157     ;;
4158     gcov)
4159         add_cflags  -fprofile-arcs -ftest-coverage
4160         add_ldflags -fprofile-arcs -ftest-coverage
4161     ;;
4162     llvm-cov)
4163         add_cflags -fprofile-arcs -ftest-coverage
4164         add_ldflags --coverage
4165     ;;
4166     hardened)
4167         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
4168         add_cflags   -fno-strict-overflow -fstack-protector-all
4169         add_ldflags  -Wl,-z,relro -Wl,-z,now
4170         add_cflags   -fPIE
4171         add_ldexeflags -fPIE -pie
4172     ;;
4173     ?*)
4174         die "Unknown toolchain $toolchain"
4175     ;;
4176 esac
4177
4178 if test -n "$cross_prefix"; then
4179     test -n "$arch" && test -n "$target_os" ||
4180         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
4181     enable cross_compile
4182 fi
4183
4184 set_default target_os
4185 if test "$target_os" = android; then
4186     cc_default="clang"
4187 fi
4188
4189 ar_default="${cross_prefix}${ar_default}"
4190 cc_default="${cross_prefix}${cc_default}"
4191 cxx_default="${cross_prefix}${cxx_default}"
4192 nm_default="${cross_prefix}${nm_default}"
4193 pkg_config_default="${cross_prefix}${pkg_config_default}"
4194 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
4195     ranlib_default="${cross_prefix}${ranlib_default} -D"
4196 else
4197     ranlib_default="${cross_prefix}${ranlib_default}"
4198 fi
4199 strip_default="${cross_prefix}${strip_default}"
4200 windres_default="${cross_prefix}${windres_default}"
4201
4202 sysinclude_default="${sysroot}/usr/include"
4203
4204 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
4205     target_exec x86asmexe nvcc
4206 enabled cross_compile || host_cc_default=$cc
4207 set_default host_cc
4208
4209 pkg_config_fail_message=""
4210 if ! $pkg_config --version >/dev/null 2>&1; then
4211     warn "$pkg_config not found, library detection may fail."
4212     pkg_config=false
4213 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
4214     pkg_config_fail_message="
4215 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
4216 fi
4217
4218 if test $doxygen != $doxygen_default && \
4219   ! $doxygen --version >/dev/null 2>&1; then
4220     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
4221 fi
4222
4223 exesuf() {
4224     case $1 in
4225         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
4226     esac
4227 }
4228
4229 EXESUF=$(exesuf $target_os)
4230 HOSTEXESUF=$(exesuf $host_os)
4231
4232 # set temporary file name
4233 : ${TMPDIR:=$TEMPDIR}
4234 : ${TMPDIR:=$TMP}
4235 : ${TMPDIR:=/tmp}
4236
4237 if [ -n "$tempprefix" ] ; then
4238     mktemp(){
4239         tmpname="$tempprefix.${HOSTNAME}.${UID}"
4240         echo "$tmpname"
4241         mkdir "$tmpname"
4242     }
4243 elif ! test_cmd mktemp -u XXXXXX; then
4244     # simple replacement for missing mktemp
4245     # NOT SAFE FOR GENERAL USE
4246     mktemp(){
4247         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
4248         echo "$tmpname"
4249         mkdir "$tmpname"
4250     }
4251 fi
4252
4253 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
4254     die "Unable to create temporary directory in $TMPDIR."
4255
4256 tmpfile(){
4257     tmp="${FFTMPDIR}/test"$2
4258     (set -C; exec > $tmp) 2> /dev/null ||
4259         die "Unable to create temporary file in $FFTMPDIR."
4260     eval $1=$tmp
4261 }
4262
4263 trap 'rm -rf -- "$FFTMPDIR"' EXIT
4264 trap 'exit 2' INT
4265
4266 tmpfile TMPASM .asm
4267 tmpfile TMPC   .c
4268 tmpfile TMPCPP .cpp
4269 tmpfile TMPE   $EXESUF
4270 tmpfile TMPH   .h
4271 tmpfile TMPM   .m
4272 tmpfile TMPCU  .cu
4273 tmpfile TMPO   .o
4274 tmpfile TMPS   .S
4275 tmpfile TMPSH  .sh
4276 tmpfile TMPV   .ver
4277
4278 unset -f mktemp
4279
4280 chmod +x $TMPE
4281
4282 # make sure we can execute files in $TMPDIR
4283 cat > $TMPSH 2>> $logfile <<EOF
4284 #! /bin/sh
4285 EOF
4286 chmod +x $TMPSH >> $logfile 2>&1
4287 if ! $TMPSH >> $logfile 2>&1; then
4288     cat <<EOF
4289 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
4290 variable to another directory and make sure that it is not mounted noexec.
4291 EOF
4292     die "Sanity test failed."
4293 fi
4294
4295 armasm_flags(){
4296     for flag; do
4297         case $flag in
4298             # Filter out MSVC cl.exe options from cflags that shouldn't
4299             # be passed to gas-preprocessor
4300             -M[TD]*)                                            ;;
4301             *)                  echo $flag                      ;;
4302         esac
4303    done
4304 }
4305
4306 cparser_flags(){
4307     for flag; do
4308         case $flag in
4309             -Wno-switch)             echo -Wno-switch-enum ;;
4310             -Wno-format-zero-length) ;;
4311             -Wdisabled-optimization) ;;
4312             -Wno-pointer-sign)       echo -Wno-other ;;
4313             *)                       echo $flag ;;
4314         esac
4315     done
4316 }
4317
4318 msvc_common_flags(){
4319     for flag; do
4320         case $flag in
4321             # In addition to specifying certain flags under the compiler
4322             # specific filters, they must be specified here as well or else the
4323             # generic catch all at the bottom will print the original flag.
4324             -Wall)                ;;
4325             -Wextra)              ;;
4326             -std=c99)             ;;
4327             # Common flags
4328             -fomit-frame-pointer) ;;
4329             -g)                   echo -Z7 ;;
4330             -fno-math-errno)      ;;
4331             -fno-common)          ;;
4332             -fno-signed-zeros)    ;;
4333             -fPIC)                ;;
4334             -mthumb)              ;;
4335             -march=*)             ;;
4336             -lz)                  echo zlib.lib ;;
4337             -lx264)               echo libx264.lib ;;
4338             -lstdc++)             ;;
4339             -l*)                  echo ${flag#-l}.lib ;;
4340             -LARGEADDRESSAWARE)   echo $flag ;;
4341             -L*)                  echo -libpath:${flag#-L} ;;
4342             *)                    echo $flag ;;
4343         esac
4344     done
4345 }
4346
4347 msvc_flags(){
4348     msvc_common_flags "$@"
4349     for flag; do
4350         case $flag in
4351             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4352                                        -wd4554 ;;
4353             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4354                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4355                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4356                                        -wd4307 \
4357                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4358         esac
4359     done
4360 }
4361
4362 icl_flags(){
4363     msvc_common_flags "$@"
4364     for flag; do
4365         case $flag in
4366             # Despite what Intel's documentation says -Wall, which is supported
4367             # on Windows, does enable remarks so disable them here.
4368             -Wall)                echo $flag -Qdiag-disable:remark ;;
4369             -std=c99)             echo -Qstd=c99 ;;
4370             -flto)                echo -ipo ;;
4371         esac
4372     done
4373 }
4374
4375 icc_flags(){
4376     for flag; do
4377         case $flag in
4378             -flto)                echo -ipo ;;
4379             *)                    echo $flag ;;
4380         esac
4381     done
4382 }
4383
4384 suncc_flags(){
4385     for flag; do
4386         case $flag in
4387             -march=*|-mcpu=*)
4388                 case "${flag#*=}" in
4389                     native)                   echo -xtarget=native       ;;
4390                     v9|niagara)               echo -xarch=sparc          ;;
4391                     ultrasparc)               echo -xarch=sparcvis       ;;
4392                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4393                     i586|pentium)             echo -xchip=pentium        ;;
4394                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4395                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4396                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4397                     pentium4*)          echo -xtarget=pentium4           ;;
4398                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4399                     *-sse3)             echo -xarch=sse3                 ;;
4400                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4401                     bonnell)                   echo -xarch=ssse3         ;;
4402                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4403                     westmere)                  echo -xtarget=westmere    ;;
4404                     silvermont)                echo -xarch=sse4_2        ;;
4405                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4406                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4407                                                echo -xarch=avx           ;;
4408                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4409                     btver1)                    echo -xarch=amdsse4a      ;;
4410                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4411                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4412                     k8|opteron|athlon64|athlon-fx)
4413                                                echo -xarch=sse2a         ;;
4414                     athlon*)                   echo -xarch=pentium_proa  ;;
4415                 esac
4416                 ;;
4417             -std=c99)             echo -xc99              ;;
4418             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4419             -fPIC)                echo -KPIC -xcode=pic32 ;;
4420             -W*,*)                echo $flag              ;;
4421             -f*-*|-W*|-mimpure-text)                      ;;
4422             -shared)              echo -G                 ;;
4423             *)                    echo $flag              ;;
4424         esac
4425     done
4426 }
4427
4428 probe_cc(){
4429     pfx=$1
4430     _cc=$2
4431     first=$3
4432
4433     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4434     unset _ld_o _ldflags _ld_lib _ld_path
4435     unset _depflags _DEPCMD _DEPFLAGS
4436     _flags_filter=echo
4437
4438     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4439         true # no-op to avoid reading stdin in following checks
4440     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4441         _type=llvm_gcc
4442         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4443         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4444         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4445         _cflags_speed='-O3'
4446         _cflags_size='-Os'
4447     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4448         _type=gcc
4449         gcc_version=$($_cc --version | head -n1)
4450         gcc_basever=$($_cc -dumpversion)
4451         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4452         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4453         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4454         case $gcc_basever in
4455             2) ;;
4456             2.*) ;;
4457             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4458         esac
4459         if [ "$first" = true ]; then
4460             case $gcc_basever in
4461                 4.2*)
4462                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4463             esac
4464         fi
4465         _cflags_speed='-O3'
4466         _cflags_size='-Os'
4467     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4468         _type=icc
4469         _ident=$($_cc --version | head -n1)
4470         _depflags='-MMD'
4471         _cflags_speed='-O3'
4472         _cflags_size='-Os'
4473         _cflags_noopt='-O1'
4474         _flags_filter=icc_flags
4475     elif $_cc -v 2>&1 | grep -q xlc; then
4476         _type=xlc
4477         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4478         _cflags_speed='-O5'
4479         _cflags_size='-O5 -qcompact'
4480     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4481         test -d "$sysroot" || die "No valid sysroot specified."
4482         _type=armcc
4483         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4484         armcc_conf="$PWD/armcc.conf"
4485         $_cc --arm_linux_configure                 \
4486              --arm_linux_config_file="$armcc_conf" \
4487              --configure_sysroot="$sysroot"        \
4488              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4489              die "Error creating armcc configuration file."
4490         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4491         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4492         as_default="${cross_prefix}gcc"
4493         _depflags='-MMD'
4494         _cflags_speed='-O3'
4495         _cflags_size='-Os'
4496     elif $_cc -v 2>&1 | grep -q clang && ! $_cc -? > /dev/null 2>&1; then
4497         _type=clang
4498         _ident=$($_cc --version 2>/dev/null | head -n1)
4499         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4500         _cflags_speed='-O3'
4501         _cflags_size='-Oz'
4502     elif $_cc -V 2>&1 | grep -q Sun; then
4503         _type=suncc
4504         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4505         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4506         _DEPFLAGS='-xM1 -xc99'
4507         _ldflags='-std=c99'
4508         _cflags_speed='-O5'
4509         _cflags_size='-O5 -xspace'
4510         _flags_filter=suncc_flags
4511     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4512         _type=pathscale
4513         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4514         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4515         _cflags_speed='-O2'
4516         _cflags_size='-Os'
4517         _flags_filter='filter_out -Wdisabled-optimization'
4518     elif $_cc -v 2>&1 | grep -q Open64; then
4519         _type=open64
4520         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4521         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4522         _cflags_speed='-O2'
4523         _cflags_size='-Os'
4524         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4525     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4526         _type=armasm
4527         _ident=$($_cc | head -n1)
4528         # 4509: "This form of conditional instruction is deprecated"
4529         _flags="-nologo -ignore 4509"
4530         _flags_filter=armasm_flags
4531     elif $_cc 2>&1 | grep -q Intel; then
4532         _type=icl
4533         _ident=$($_cc 2>&1 | head -n1)
4534         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4535         # Not only is O3 broken on 13.x+ but it is slower on all previous
4536         # versions (tested) as well.
4537         _cflags_speed="-O2"
4538         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4539         if $_cc 2>&1 | grep -q Linker; then
4540             _ld_o='-out:$@'
4541         else
4542             _ld_o='-Fe$@'
4543         fi
4544         _cc_o='-Fo$@'
4545         _cc_e='-P'
4546         _flags_filter=icl_flags
4547         _ld_lib='lib%.a'
4548         _ld_path='-libpath:'
4549         # -Qdiag-error to make icl error when seeing certain unknown arguments
4550         _flags='-nologo -Qdiag-error:4044,10157'
4551         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4552         # with MSVC which enables it by default.
4553         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4554         disable stripping
4555     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4556         # lld can emulate multiple different linkers; in ms link.exe mode,
4557         # the -? parameter gives the help output which contains an identifyable
4558         # string, while it gives an error in other modes.
4559         _type=lld-link
4560         # The link.exe mode doesn't have a switch for getting the version,
4561         # but we can force it back to gnu mode and get the version from there.
4562         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4563         _ld_o='-out:$@'
4564         _flags_filter=msvc_flags
4565         _ld_lib='lib%.a'
4566         _ld_path='-libpath:'
4567     elif $_cc -nologo- 2>&1 | grep -q Microsoft || { $_cc -v 2>&1 | grep -q clang && $_cc -? > /dev/null 2>&1; }; then
4568         _type=msvc
4569         _ident=$($_cc 2>&1 | head -n1 | tr -d '\r')
4570         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4571         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4572         _cflags_speed="-O2"
4573         _cflags_size="-O1"
4574         _cflags_noopt="-O1"
4575         if $_cc -nologo- 2>&1 | grep -q Linker; then
4576             _ld_o='-out:$@'
4577         else
4578             _ld_o='-Fe$@'
4579         fi
4580         _cc_o='-Fo$@'
4581         _cc_e='-P -Fi$@'
4582         _flags_filter=msvc_flags
4583         _ld_lib='lib%.a'
4584         _ld_path='-libpath:'
4585         _flags='-nologo'
4586         disable stripping
4587     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4588         _type=cparser
4589         _ident=$($_cc --version | head -n1)
4590         _depflags='-MMD'
4591         _cflags_speed='-O4'
4592         _cflags_size='-O2'
4593         _flags_filter=cparser_flags
4594     fi
4595
4596     eval ${pfx}_type=\$_type
4597     eval ${pfx}_ident=\$_ident
4598 }
4599
4600 set_ccvars(){
4601     eval ${1}_C=\${_cc_c-\${${1}_C}}
4602     eval ${1}_E=\${_cc_e-\${${1}_E}}
4603     eval ${1}_O=\${_cc_o-\${${1}_O}}
4604
4605     if [ -n "$_depflags" ]; then
4606         eval ${1}_DEPFLAGS=\$_depflags
4607     else
4608         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4609         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4610         eval DEP${1}FLAGS=\$_flags
4611     fi
4612 }
4613
4614 probe_cc cc "$cc" "true"
4615 cflags_filter=$_flags_filter
4616 cflags_speed=$_cflags_speed
4617 cflags_size=$_cflags_size
4618 cflags_noopt=$_cflags_noopt
4619 add_cflags $_flags $_cflags
4620 cc_ldflags=$_ldflags
4621 set_ccvars CC
4622 set_ccvars CXX
4623
4624 probe_cc hostcc "$host_cc"
4625 host_cflags_filter=$_flags_filter
4626 host_cflags_speed=$_cflags_speed
4627 add_host_cflags  $_flags $_cflags
4628 set_ccvars HOSTCC
4629
4630 test -n "$cc_type" && enable $cc_type ||
4631     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4632
4633 : ${as_default:=$cc}
4634 : ${objcc_default:=$cc}
4635 : ${dep_cc_default:=$cc}
4636 : ${ld_default:=$cc}
4637 : ${host_ld_default:=$host_cc}
4638 set_default ar as objcc dep_cc ld ln_s host_ld windres
4639
4640 probe_cc as "$as"
4641 asflags_filter=$_flags_filter
4642 add_asflags $_flags $_cflags
4643 set_ccvars AS
4644
4645 probe_cc objcc "$objcc"
4646 objcflags_filter=$_flags_filter
4647 add_objcflags $_flags $_cflags
4648 set_ccvars OBJC
4649
4650 probe_cc ld "$ld"
4651 ldflags_filter=$_flags_filter
4652 add_ldflags $_flags $_ldflags
4653 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4654 LD_O=${_ld_o-$LD_O}
4655 LD_LIB=${_ld_lib-$LD_LIB}
4656 LD_PATH=${_ld_path-$LD_PATH}
4657
4658 probe_cc hostld "$host_ld"
4659 host_ldflags_filter=$_flags_filter
4660 add_host_ldflags $_flags $_ldflags
4661 HOSTLD_O=${_ld_o-$HOSTLD_O}
4662
4663 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4664     probe_cc depcc "$dep_cc"
4665     CCDEP=${_DEPCMD:-$DEPCMD}
4666     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4667     DEPCCFLAGS=$_flags
4668 fi
4669
4670 if $ar 2>&1 | grep -q Microsoft; then
4671     arflags="-nologo"
4672     ar_o='-out:$@'
4673 elif $ar 2>&1 | grep -q "\[D\] "; then
4674     arflags="rcD"
4675     ar_o='$@'
4676 else
4677     arflags="rc"
4678     ar_o='$@'
4679 fi
4680
4681 add_cflags $extra_cflags
4682 add_cxxflags $extra_cxxflags
4683 add_objcflags $extra_objcflags
4684 add_asflags $extra_cflags
4685
4686 if test -n "$sysroot"; then
4687     case "$cc_type" in
4688         gcc|llvm_gcc|clang)
4689             add_cppflags --sysroot="$sysroot"
4690             add_ldflags --sysroot="$sysroot"
4691         ;;
4692     esac
4693 fi
4694
4695 if test "$cpu" = host; then
4696     enabled cross_compile &&
4697         die "--cpu=host makes no sense when cross-compiling."
4698
4699     case "$cc_type" in
4700         gcc|llvm_gcc)
4701             check_native(){
4702                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4703                 sed -n "/cc1.*$1=/{
4704                             s/.*$1=\\([^ ]*\\).*/\\1/
4705                             p
4706                             q
4707                         }" $TMPE
4708             }
4709             cpu=$(check_native -march || check_native -mcpu)
4710         ;;
4711         clang)
4712             check_native(){
4713                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4714                 sed -n "/cc1.*-target-cpu /{
4715                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4716                             p
4717                             q
4718                         }" $TMPE
4719             }
4720             cpu=$(check_native -march)
4721         ;;
4722     esac
4723
4724     test "${cpu:-host}" = host &&
4725         die "--cpu=host not supported with compiler $cc"
4726 fi
4727
4728 # Deal with common $arch aliases
4729 case "$arch" in
4730     aarch64|arm64)
4731         arch="aarch64"
4732     ;;
4733     arm*|iPad*|iPhone*)
4734         arch="arm"
4735     ;;
4736     mips*|IP*)
4737         case "$arch" in
4738         *el)
4739             add_cppflags -EL
4740             add_ldflags -EL
4741         ;;
4742         *eb)
4743             add_cppflags -EB
4744             add_ldflags -EB
4745         ;;
4746         esac
4747         arch="mips"
4748     ;;
4749     parisc*|hppa*)
4750         arch="parisc"
4751     ;;
4752     "Power Macintosh"|ppc*|powerpc*)
4753         arch="ppc"
4754     ;;
4755     s390|s390x)
4756         arch="s390"
4757     ;;
4758     sh4|sh)
4759         arch="sh4"
4760     ;;
4761     sun4*|sparc*)
4762         arch="sparc"
4763     ;;
4764     tilegx|tile-gx)
4765         arch="tilegx"
4766     ;;
4767     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4768         arch="x86"
4769     ;;
4770 esac
4771
4772 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4773 enable $arch
4774
4775 # Add processor-specific flags
4776 if enabled aarch64; then
4777
4778     case $cpu in
4779         armv*)
4780             cpuflags="-march=$cpu"
4781         ;;
4782         *)
4783             cpuflags="-mcpu=$cpu"
4784         ;;
4785     esac
4786
4787 elif enabled alpha; then
4788
4789     cpuflags="-mcpu=$cpu"
4790
4791 elif enabled arm; then
4792
4793     check_arm_arch() {
4794         test_cpp_condition stddef.h \
4795             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4796             $cpuflags
4797     }
4798
4799     probe_arm_arch() {
4800         if   check_arm_arch 4;        then echo armv4
4801         elif check_arm_arch 4T;       then echo armv4t
4802         elif check_arm_arch 5;        then echo armv5
4803         elif check_arm_arch 5E;       then echo armv5e
4804         elif check_arm_arch 5T;       then echo armv5t
4805         elif check_arm_arch 5TE;      then echo armv5te
4806         elif check_arm_arch 5TEJ;     then echo armv5te
4807         elif check_arm_arch 6;        then echo armv6
4808         elif check_arm_arch 6J;       then echo armv6j
4809         elif check_arm_arch 6K;       then echo armv6k
4810         elif check_arm_arch 6Z;       then echo armv6z
4811         elif check_arm_arch 6KZ;      then echo armv6zk
4812         elif check_arm_arch 6ZK;      then echo armv6zk
4813         elif check_arm_arch 6T2;      then echo armv6t2
4814         elif check_arm_arch 7;        then echo armv7
4815         elif check_arm_arch 7A  7_A;  then echo armv7-a
4816         elif check_arm_arch 7S;       then echo armv7-a
4817         elif check_arm_arch 7R  7_R;  then echo armv7-r
4818         elif check_arm_arch 7M  7_M;  then echo armv7-m
4819         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4820         elif check_arm_arch 8A  8_A;  then echo armv8-a
4821         fi
4822     }
4823
4824     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4825
4826     case $cpu in
4827         armv*)
4828             cpuflags="-march=$cpu"
4829             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4830         ;;
4831         *)
4832             cpuflags="-mcpu=$cpu"
4833             case $cpu in
4834                 cortex-a*)                               subarch=armv7a  ;;
4835                 cortex-r*)                               subarch=armv7r  ;;
4836                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4837                 arm11*)                                  subarch=armv6   ;;
4838                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4839                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4840                 *)                             subarch=$(probe_arm_arch) ;;
4841             esac
4842         ;;
4843     esac
4844
4845     case "$subarch" in
4846         armv5t*)    enable fast_clz                ;;
4847         armv[6-8]*)
4848             enable fast_clz
4849             disabled fast_unaligned || enable fast_unaligned
4850             ;;
4851     esac
4852
4853 elif enabled avr32; then
4854
4855     case $cpu in
4856         ap7[02]0[0-2])
4857             subarch="avr32_ap"
4858             cpuflags="-mpart=$cpu"
4859         ;;
4860         ap)
4861             subarch="avr32_ap"
4862             cpuflags="-march=$cpu"
4863         ;;
4864         uc3[ab]*)
4865             subarch="avr32_uc"
4866             cpuflags="-mcpu=$cpu"
4867         ;;
4868         uc)
4869             subarch="avr32_uc"
4870             cpuflags="-march=$cpu"
4871         ;;
4872     esac
4873
4874 elif enabled bfin; then
4875
4876     cpuflags="-mcpu=$cpu"
4877
4878 elif enabled mips; then
4879
4880     cpuflags="-march=$cpu"
4881
4882     if [ "$cpu" != "generic" ]; then
4883         disable mips32r2
4884         disable mips32r5
4885         disable mips64r2
4886         disable mips32r6
4887         disable mips64r6
4888         disable loongson2
4889         disable loongson3
4890
4891         case $cpu in
4892             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4893                 enable mips32r2
4894                 disable msa
4895             ;;
4896             p5600|i6400|p6600)
4897                 disable mipsdsp
4898                 disable mipsdspr2
4899             ;;
4900             loongson*)
4901                 enable loongson2
4902                 enable loongson3
4903                 enable local_aligned
4904                 enable simd_align_16
4905                 enable fast_64bit
4906                 enable fast_clz
4907                 enable fast_cmov
4908                 enable fast_unaligned
4909                 disable aligned_stack
4910                 disable mipsdsp
4911                 disable mipsdspr2
4912                 # When gcc version less than 5.3.0, add -fno-expensive-optimizations flag.
4913                 if [ $cc == gcc ]; then
4914                     gcc_version=$(gcc -dumpversion)
4915                     if [ "$(echo "$gcc_version 5.3.0" | tr " " "\n" | sort -rV | head -n 1)" == "$gcc_version" ]; then
4916                         expensive_optimization_flag=""
4917                     else
4918                         expensive_optimization_flag="-fno-expensive-optimizations"
4919                     fi
4920                 fi
4921                 case $cpu in
4922                     loongson3*)
4923                         cpuflags="-march=loongson3a -mhard-float $expensive_optimization_flag"
4924                     ;;
4925                     loongson2e)
4926                         cpuflags="-march=loongson2e -mhard-float $expensive_optimization_flag"
4927                     ;;
4928                     loongson2f)
4929                         cpuflags="-march=loongson2f -mhard-float $expensive_optimization_flag"
4930                     ;;
4931                 esac
4932             ;;
4933             *)
4934                 # Unknown CPU. Disable everything.
4935                 warn "unknown CPU. Disabling all MIPS optimizations."
4936                 disable mipsfpu
4937                 disable mipsdsp
4938                 disable mipsdspr2
4939                 disable msa
4940                 disable mmi
4941             ;;
4942         esac
4943
4944         case $cpu in
4945             24kc)
4946                 disable mipsfpu
4947                 disable mipsdsp
4948                 disable mipsdspr2
4949             ;;
4950             24kf*)
4951                 disable mipsdsp
4952                 disable mipsdspr2
4953             ;;
4954             24kec|34kc|1004kc)
4955                 disable mipsfpu
4956                 disable mipsdspr2
4957             ;;
4958             24kef*|34kf*|1004kf*)
4959                 disable mipsdspr2
4960             ;;
4961             74kc)
4962                 disable mipsfpu
4963             ;;
4964             p5600)
4965                 enable mips32r5
4966                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4967             ;;
4968             i6400)
4969                 enable mips64r6
4970                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4971             ;;
4972             p6600)
4973                 enable mips64r6
4974                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4975             ;;
4976         esac
4977     else
4978         # We do not disable anything. Is up to the user to disable the unwanted features.
4979         warn 'generic cpu selected'
4980     fi
4981
4982 elif enabled ppc; then
4983
4984     disable ldbrx
4985
4986     case $(tolower $cpu) in
4987         601|ppc601|powerpc601)
4988             cpuflags="-mcpu=601"
4989             disable altivec
4990         ;;
4991         603*|ppc603*|powerpc603*)
4992             cpuflags="-mcpu=603"
4993             disable altivec
4994         ;;
4995         604*|ppc604*|powerpc604*)
4996             cpuflags="-mcpu=604"
4997             disable altivec
4998         ;;
4999         g3|75*|ppc75*|powerpc75*)
5000             cpuflags="-mcpu=750"
5001             disable altivec
5002         ;;
5003         g4|745*|ppc745*|powerpc745*)
5004             cpuflags="-mcpu=7450"
5005             disable vsx
5006         ;;
5007         74*|ppc74*|powerpc74*)
5008             cpuflags="-mcpu=7400"
5009             disable vsx
5010         ;;
5011         g5|970|ppc970|powerpc970)
5012             cpuflags="-mcpu=970"
5013             disable vsx
5014         ;;
5015         power[3-6]*)
5016             cpuflags="-mcpu=$cpu"
5017             disable vsx
5018         ;;
5019         power[7-8]*)
5020             cpuflags="-mcpu=$cpu"
5021         ;;
5022         cell)
5023             cpuflags="-mcpu=cell"
5024             enable ldbrx
5025             disable vsx
5026         ;;
5027         e500mc)
5028             cpuflags="-mcpu=e500mc"
5029             disable altivec
5030         ;;
5031         e500v2)
5032             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
5033             disable altivec
5034             disable dcbzl
5035         ;;
5036         e500)
5037             cpuflags="-mcpu=8540 -mhard-float"
5038             disable altivec
5039             disable dcbzl
5040         ;;
5041     esac
5042
5043 elif enabled sparc; then
5044
5045     case $cpu in
5046         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
5047             cpuflags="-mcpu=$cpu"
5048         ;;
5049         ultrasparc*|niagara[234])
5050             cpuflags="-mcpu=$cpu"
5051         ;;
5052     esac
5053
5054 elif enabled x86; then
5055
5056     case $cpu in
5057         i[345]86|pentium)
5058             cpuflags="-march=$cpu"
5059             disable i686
5060             disable mmx
5061         ;;
5062         # targets that do NOT support nopl and conditional mov (cmov)
5063         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
5064             cpuflags="-march=$cpu"
5065             disable i686
5066         ;;
5067         # targets that do support nopl and conditional mov (cmov)
5068         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
5069         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
5070         |amdfam10|barcelona|b[dt]ver*|znver*)
5071             cpuflags="-march=$cpu"
5072             enable i686
5073             enable fast_cmov
5074         ;;
5075         # targets that do support conditional mov but on which it's slow
5076         pentium4|pentium4m|prescott|nocona)
5077             cpuflags="-march=$cpu"
5078             enable i686
5079             disable fast_cmov
5080         ;;
5081     esac
5082
5083 fi
5084
5085 if [ "$cpu" != generic ]; then
5086     add_cflags  $cpuflags
5087     add_asflags $cpuflags
5088     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
5089 fi
5090
5091 # compiler sanity check
5092 test_exec <<EOF
5093 int main(void){ return 0; }
5094 EOF
5095 if test "$?" != 0; then
5096     echo "$cc is unable to create an executable file."
5097     if test -z "$cross_prefix" && ! enabled cross_compile ; then
5098         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
5099         echo "Only do this if you know what cross compiling means."
5100     fi
5101     die "C compiler test failed."
5102 fi
5103
5104 add_cppflags -D_ISOC99_SOURCE
5105 add_cxxflags -D__STDC_CONSTANT_MACROS
5106 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
5107
5108 # some compilers silently accept -std=c11, so we also need to check that the
5109 # version macro is defined properly
5110 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
5111     add_cflags -std=c11 ||
5112     check_cflags -std=c99
5113
5114 check_cppflags -D_FILE_OFFSET_BITS=64
5115 check_cppflags -D_LARGEFILE_SOURCE
5116
5117 add_host_cppflags -D_ISOC99_SOURCE
5118 check_host_cflags -std=c99
5119 check_host_cflags -Wall
5120 check_host_cflags $host_cflags_speed
5121
5122 check_64bit(){
5123     arch32=$1
5124     arch64=$2
5125     expr=${3:-'sizeof(void *) > 4'}
5126     test_code cc "" "int test[2*($expr) - 1]" &&
5127         subarch=$arch64 || subarch=$arch32
5128     enable $subarch
5129 }
5130
5131 case "$arch" in
5132     aarch64|alpha|ia64)
5133         enabled shared && enable_weak pic
5134     ;;
5135     mips)
5136         check_64bit mips mips64 '_MIPS_SIM > 1'
5137         enabled shared && enable_weak pic
5138     ;;
5139     parisc)
5140         check_64bit parisc parisc64
5141         enabled shared && enable_weak pic
5142     ;;
5143     ppc)
5144         check_64bit ppc ppc64
5145         enabled shared && enable_weak pic
5146     ;;
5147     s390)
5148         check_64bit s390 s390x
5149         enabled shared && enable_weak pic
5150     ;;
5151     sparc)
5152         check_64bit sparc sparc64
5153         enabled shared && enable_weak pic
5154     ;;
5155     x86)
5156         check_64bit x86_32 x86_64
5157         # Treat x32 as x64 for now. Note it also needs pic if shared
5158         test "$subarch" = "x86_32" && test_cpp_condition stddef.h 'defined(__x86_64__)' &&
5159             subarch=x86_64 && enable x86_64 && disable x86_32
5160         if enabled x86_64; then
5161             enabled shared && enable_weak pic
5162             objformat=elf64
5163         fi
5164     ;;
5165 esac
5166
5167 # OS specific
5168 case $target_os in
5169     aix)
5170         SHFLAGS=-shared
5171         add_cppflags '-I\$(SRC_PATH)/compat/aix'
5172         enabled shared && add_ldflags -Wl,-brtl
5173         arflags='-Xany -r -c'
5174         striptype=""
5175         ;;
5176     android)
5177         disable symver
5178         enable section_data_rel_ro
5179         add_cflags -fPIE
5180         add_ldexeflags -fPIE -pie
5181         SLIB_INSTALL_NAME='$(SLIBNAME)'
5182         SLIB_INSTALL_LINKS=
5183         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
5184         ;;
5185     haiku)
5186         prefix_default="/boot/common"
5187         network_extralibs="-lnetwork"
5188         host_extralibs=
5189         ;;
5190     sunos)
5191         SHFLAGS='-shared -Wl,-h,$$(@F)'
5192         enabled x86 && append SHFLAGS -mimpure-text
5193         network_extralibs="-lsocket -lnsl"
5194         add_cppflags -D__EXTENSIONS__
5195         # When using suncc to build, the Solaris linker will mark
5196         # an executable with each instruction set encountered by
5197         # the Solaris assembler.  As our libraries contain their own
5198         # guards for processor-specific code, instead suppress
5199         # generation of the HWCAPS ELF section on Solaris x86 only.
5200         enabled_all suncc x86 &&
5201             echo "hwcap_1 = OVERRIDE;" > mapfile &&
5202             add_ldflags -Wl,-M,mapfile
5203         nm_default='nm -P -g'
5204         striptype=""
5205         version_script='-M'
5206         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
5207         ;;
5208     netbsd)
5209         disable symver
5210         oss_indev_extralibs="-lossaudio"
5211         oss_outdev_extralibs="-lossaudio"
5212         enabled gcc || check_ldflags -Wl,-zmuldefs
5213         ;;
5214     openbsd|bitrig)
5215         disable symver
5216         striptype=""
5217         SHFLAGS='-shared'
5218         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
5219         SLIB_INSTALL_LINKS=
5220         oss_indev_extralibs="-lossaudio"
5221         oss_outdev_extralibs="-lossaudio"
5222         ;;
5223     dragonfly)
5224         disable symver
5225         ;;
5226     freebsd)
5227         ;;
5228     bsd/os)
5229         add_extralibs -lpoll -lgnugetopt
5230         strip="strip -d"
5231         ;;
5232     darwin)
5233         enabled ppc && add_asflags -force_cpusubtype_ALL
5234         install_name_dir_default='$(SHLIBDIR)'
5235         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
5236         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
5237         strip="${strip} -x"
5238         add_ldflags -Wl,-dynamic,-search_paths_first
5239         check_cflags -Werror=partial-availability
5240         SLIBSUF=".dylib"
5241         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
5242         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
5243         enabled x86_64 && objformat="macho64" || objformat="macho32"
5244         enabled_any pic shared x86_64 ||
5245             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
5246         check_headers dispatch/dispatch.h &&
5247             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
5248         if test -n "$sysroot"; then
5249             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
5250             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
5251         fi
5252         version_script='-exported_symbols_list'
5253         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
5254         ;;
5255     msys*)
5256         die "Native MSYS builds are discouraged, please use the MINGW environment."
5257         ;;
5258     mingw32*|mingw64*)
5259         target_os=mingw32
5260         LIBTARGET=i386
5261         if enabled x86_64; then
5262             LIBTARGET="i386:x86-64"
5263         elif enabled arm; then
5264             LIBTARGET="arm"
5265         elif enabled aarch64; then
5266             LIBTARGET="arm64"
5267         fi
5268         if enabled shared; then
5269             # Cannot build both shared and static libs when using dllimport.
5270             disable static
5271         fi
5272         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5273         enabled x86_32 && check_ldflags -Wl,--large-address-aware
5274         shlibdir_default="$bindir_default"
5275         SLIBPREF=""
5276         SLIBSUF=".dll"
5277         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5278         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5279         if test_cmd lib.exe -list; then
5280             SLIB_EXTRA_CMD=-'lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5281             if enabled x86_64; then
5282                 LIBTARGET=x64
5283             fi
5284         else
5285             SLIB_EXTRA_CMD=-'$(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
5286         fi
5287         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5288         SLIB_INSTALL_LINKS=
5289         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5290         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5291         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5292         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--disable-auto-image-base $$(@:$(SLIBSUF)=.def)'
5293         enabled x86_64 && objformat="win64" || objformat="win32"
5294         dlltool="${cross_prefix}dlltool"
5295         ranlib=:
5296         enable dos_paths
5297         check_ldflags -Wl,--nxcompat,--dynamicbase
5298         # Lets work around some stupidity in binutils.
5299         # ld will strip relocations from executables even though we need them
5300         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
5301         # however ld then forgets what the entry point should be (oops) so we
5302         # have to manually (re)set it.
5303         if enabled x86_32; then
5304             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
5305         elif enabled x86_64; then
5306             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
5307             check_ldflags -Wl,--high-entropy-va # binutils 2.25
5308             # Set image base >4GB for extra entropy with HEASLR
5309             add_ldexeflags -Wl,--image-base,0x140000000
5310             append SHFLAGS -Wl,--image-base,0x180000000
5311         fi
5312         ;;
5313     win32|win64)
5314         disable symver
5315         if enabled shared; then
5316             # Link to the import library instead of the normal static library
5317             # for shared libs.
5318             LD_LIB='%.lib'
5319             # Cannot build both shared and static libs with MSVC or icl.
5320             disable static
5321         fi
5322         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
5323         shlibdir_default="$bindir_default"
5324         SLIBPREF=""
5325         SLIBSUF=".dll"
5326         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5327         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5328         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5329         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5330         SLIB_INSTALL_LINKS=
5331         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5332         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5333         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5334         enabled x86_64 && objformat="win64" || objformat="win32"
5335         ranlib=:
5336         enable dos_paths
5337         ;;
5338     cygwin*)
5339         target_os=cygwin
5340         shlibdir_default="$bindir_default"
5341         SLIBPREF="cyg"
5342         SLIBSUF=".dll"
5343         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5344         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5345         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5346         SLIB_INSTALL_LINKS=
5347         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5348         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5349         enabled x86_64 && objformat="win64" || objformat="win32"
5350         enable dos_paths
5351         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5352         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5353         ;;
5354     *-dos|freedos|opendos)
5355         network_extralibs="-lsocket"
5356         objformat="coff"
5357         enable dos_paths
5358         ;;
5359     linux)
5360         enable section_data_rel_ro
5361         enabled_any arm aarch64 && enable_weak linux_perf
5362         ;;
5363     irix*)
5364         target_os=irix
5365         ranlib="echo ignoring ranlib"
5366         ;;
5367     os/2*)
5368         strip="lxlite -CS"
5369         striptype=""
5370         objformat="aout"
5371         add_cppflags -D_GNU_SOURCE
5372         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5373         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5374         LIBSUF="_s.a"
5375         SLIBPREF=""
5376         SLIBSUF=".dll"
5377         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5378         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5379         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5380             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5381             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5382             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5383             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5384         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5385             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5386         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5387         SLIB_INSTALL_LINKS=
5388         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5389         enable dos_paths
5390         enable_weak os2threads
5391         ;;
5392     gnu/kfreebsd)
5393         add_cppflags -D_BSD_SOURCE
5394         ;;
5395     gnu)
5396         ;;
5397     qnx)
5398         add_cppflags -D_QNX_SOURCE
5399         network_extralibs="-lsocket"
5400         ;;
5401     symbian)
5402         SLIBSUF=".dll"
5403         enable dos_paths
5404         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5405         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5406         add_ldflags -Wl,--target1-abs,--no-undefined \
5407                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5408                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5409         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5410                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5411                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5412         ;;
5413     minix)
5414         ;;
5415     none)
5416         ;;
5417     *)
5418         die "Unknown OS '$target_os'."
5419         ;;
5420 esac
5421
5422 # test if creating links works
5423 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5424 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5425 mkdir "$link_dest"
5426 $ln_s "$link_dest" "$link_name"
5427 touch "$link_dest/test_file"
5428 if [ "$source_path" != "." ] && [ "$source_path" != "src" ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5429     # create link to source path
5430     [ -e src ] && rm src
5431     $ln_s "$source_path" src
5432     source_link=src
5433 else
5434     # creating directory links doesn't work
5435     # fall back to using the full source path
5436     source_link="$source_path"
5437 fi
5438 # cleanup
5439 rm -r "$link_dest"
5440 rm -r "$link_name"
5441
5442 # determine libc flavour
5443
5444 probe_libc(){
5445     pfx=$1
5446     pfx_no_=${pfx%_}
5447     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5448     if test_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5449         eval ${pfx}libc_type=uclibc
5450         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5451     elif test_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5452         eval ${pfx}libc_type=glibc
5453         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5454     # MinGW headers can be installed on Cygwin, so check for newlib first.
5455     elif test_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5456         eval ${pfx}libc_type=newlib
5457         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5458     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5459     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5460         eval ${pfx}libc_type=mingw64
5461         if test_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5462             add_compat msvcrt/snprintf.o
5463             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5464         fi
5465         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5466         eval test \$${pfx_no_}cc_type = "gcc" &&
5467             add_${pfx}cppflags -D__printf__=__gnu_printf__
5468         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5469             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5470         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5471     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5472          test_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5473         eval ${pfx}libc_type=mingw32
5474         test_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5475             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5476             die "ERROR: MinGW32 runtime version must be >= 3.15."
5477         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5478         test_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5479             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5480         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5481             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5482         eval test \$${pfx_no_}cc_type = "gcc" &&
5483             add_${pfx}cppflags -D__printf__=__gnu_printf__
5484         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5485     elif test_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5486         eval ${pfx}libc_type=msvcrt
5487         if test_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5488             if [ "$pfx" = host_ ]; then
5489                 add_host_cppflags -Dsnprintf=_snprintf
5490             else
5491                 add_compat strtod.o strtod=avpriv_strtod
5492                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5493                                              _snprintf=avpriv_snprintf  \
5494                                              vsnprintf=avpriv_vsnprintf
5495             fi
5496         fi
5497         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5498         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5499         # 0x601 by default unless something else is set by the user.
5500         # This can easily lead to us detecting functions only present
5501         # in such new versions and producing binaries requiring windows 7.0.
5502         # Therefore explicitly set the default to Vista unless the user has
5503         # set something else on the command line.
5504         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5505         # family. For these cases, configure is free to use any functions
5506         # found in the SDK headers by default. (Alternatively, we could force
5507         # _WIN32_WINNT to 0x0602 in that case.)
5508         test_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5509             { test_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0600; }
5510 #ifdef WINAPI_FAMILY
5511 #include <winapifamily.h>
5512 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5513 #error not desktop
5514 #endif
5515 #endif
5516 EOF
5517         if [ "$pfx" = "" ]; then
5518             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5519             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5520         fi
5521     elif test_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5522         eval ${pfx}libc_type=klibc
5523     elif test_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5524         eval ${pfx}libc_type=bionic
5525     elif test_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5526         eval ${pfx}libc_type=solaris
5527         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5528     elif test_${pfx}cpp_condition sys/version.h "defined __DJGPP__"; then
5529         eval ${pfx}libc_type=djgpp
5530         add_cppflags -U__STRICT_ANSI__
5531         add_cflags "-include $source_path/compat/djgpp/math.h"
5532         add_compat djgpp/math.o
5533     fi
5534     test_${pfx}cc <<EOF
5535 #include <time.h>
5536 void *v = localtime_r;
5537 EOF
5538 test "$?" != 0 && test_${pfx}cc -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 <<EOF && add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5539 #include <time.h>
5540 void *v = localtime_r;
5541 EOF
5542
5543     eval test -n "\${${pfx}libc_type}" && enable ${pfx}libc_${libc_type}
5544 }
5545
5546 probe_libc
5547 probe_libc host_
5548
5549 # hacks for compiler/libc/os combinations
5550
5551 case $libc_type in
5552     bionic)
5553         add_compat strtod.o strtod=avpriv_strtod
5554         ;;
5555 esac
5556
5557 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5558     add_cppflags '-I\$(SRC_PATH)/compat/float'
5559
5560 test_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5561
5562 set_default libdir
5563 : ${shlibdir_default:="$libdir"}
5564 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5565
5566 set_default $PATHS_LIST
5567 set_default nm
5568
5569 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5570
5571 enable_weak_pic() {
5572     disabled pic && return
5573     enable pic
5574     add_cppflags -DPIC
5575     case "$target_os" in
5576     mingw*|cygwin*|win*)
5577         ;;
5578     *)
5579         add_cflags -fPIC
5580         add_asflags -fPIC
5581         ;;
5582     esac
5583 }
5584
5585 enabled pic && enable_weak_pic
5586
5587 test_cc <<EOF || die "Symbol mangling check failed."
5588 int ff_extern;
5589 EOF
5590 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5591 extern_prefix=${sym%%ff_extern*}
5592
5593 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
5594
5595 for restrict_keyword in restrict __restrict__ __restrict ""; do
5596     test_code cc "" "char * $restrict_keyword p" && break
5597 done
5598
5599 check_cc pragma_deprecated "" '_Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"")'
5600
5601 # The global variable ensures the bits appear unchanged in the object file.
5602 test_cc <<EOF || die "endian test failed"
5603 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5604 EOF
5605 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5606
5607 check_cc const_nan math.h "struct { double d; } static const bar[] = { { NAN } }"
5608
5609 if ! enabled ppc64 || enabled bigendian; then
5610     disable vsx
5611 fi
5612
5613 check_gas() {
5614     log "check_gas using '$as' as AS"
5615     # :vararg is used on aarch64, arm and ppc altivec
5616     check_as vararg "
5617 .macro m n, y:vararg=0
5618 \n: .int \y
5619 .endm
5620 m x" || return 1
5621     # .altmacro is only used in arm asm
5622     ! enabled arm || check_as gnu_as ".altmacro"
5623 }
5624
5625 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5626     nogas=:
5627     enabled_any arm aarch64 && nogas=die
5628     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5629     as_noop=-v
5630
5631     case $as_type in
5632         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5633         gcc)  gaspp_as_type=gas ;;
5634         *)    gaspp_as_type=$as_type ;;
5635     esac
5636
5637     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5638
5639     test "${as#*gas-preprocessor.pl}" != "$as" ||
5640     test_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5641         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5642
5643     if ! check_gas ; then
5644         as=${gas:=$as}
5645         check_gas || \
5646             $nogas "GNU assembler not found, install/update gas-preprocessor"
5647     fi
5648
5649     check_as as_func ".func test
5650                       .endfunc"
5651 fi
5652
5653 check_inline_asm inline_asm_labels '"1:\n"'
5654
5655 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5656
5657 if enabled aarch64; then
5658     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5659     # internal assembler in clang 3.3 does not support this instruction
5660     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5661     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5662
5663     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5664
5665 elif enabled alpha; then
5666
5667     check_cflags -mieee
5668
5669 elif enabled arm; then
5670
5671     enabled msvc && check_cpp_condition thumb stddef.h "defined _M_ARMT"
5672     test_cpp_condition stddef.h "defined __thumb__" && test_cc <<EOF && enable_weak thumb
5673 float func(float a, float b){ return a+b; }
5674 EOF
5675     enabled thumb && check_cflags -mthumb || check_cflags -marm
5676
5677     if check_cpp_condition vfp_args stddef.h "defined __ARM_PCS_VFP"; then
5678         :
5679     elif check_cpp_condition vfp_args stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5680         :
5681     elif ! test_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5682         case "${cross_prefix:-$cc}" in
5683             *hardfloat*) enable vfp_args; fpabi=vfp ;;
5684             *) check_ld "cc" vfp_args <<EOF && fpabi=vfp || fpabi=soft ;;
5685 __asm__ (".eabi_attribute 28, 1");
5686 int main(void) { return 0; }
5687 EOF
5688         esac
5689         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5690     fi
5691
5692     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5693     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5694     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5695     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5696     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5697     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5698     enabled setend  && check_insn setend  'setend be'
5699
5700     [ $target_os = linux ] || [ $target_os = android ] ||
5701         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5702             $ARCH_EXT_LIST_ARM
5703
5704     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5705
5706     check_as as_arch_directive ".arch armv7-a"
5707     check_as as_dn_directive   "ra .dn d0.i16"
5708     check_as as_fpu_directive  ".fpu neon"
5709
5710     # llvm's integrated assembler supports .object_arch from llvm 3.5
5711     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5712         check_as as_object_arch ".object_arch armv4"
5713
5714     # MS armasm fails to assemble our PIC constructs
5715     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5716
5717 elif enabled mips; then
5718
5719     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5720     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5721     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5722
5723     # Enable minimum ISA based on selected options
5724     if enabled mips64; then
5725         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5726         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5727         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5728     else
5729         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5730         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5731         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5732         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5733     fi
5734
5735     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5736     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5737     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_headers msa.h || disable msa
5738     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5739     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5740
5741     if enabled bigendian && enabled msa; then
5742         disable msa
5743     fi
5744
5745 elif enabled parisc; then
5746
5747     if enabled gcc; then
5748         case $($cc -dumpversion) in
5749             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5750         esac
5751     fi
5752
5753 elif enabled ppc; then
5754
5755     enable local_aligned
5756
5757     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5758     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5759     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5760     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5761
5762     if enabled altivec; then
5763         check_cflags -maltivec -mabi=altivec
5764
5765         # check if our compiler supports Motorola AltiVec C API
5766         check_cc altivec altivec.h "vector signed int v1 = (vector signed int) { 0 };
5767                                     vector signed int v2 = (vector signed int) { 1 };
5768                                     v1 = vec_add(v1, v2);"
5769
5770         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5771     fi
5772
5773     if enabled vsx; then
5774         check_cflags -mvsx &&
5775         check_cc vsx altivec.h "int v[4] = { 0 };
5776                                 vector signed int v1 = vec_vsx_ld(0, v);"
5777     fi
5778
5779     if enabled power8; then
5780         check_cpp_condition power8 "altivec.h" "defined(_ARCH_PWR8)"
5781     fi
5782
5783 elif enabled x86; then
5784
5785     check_builtin rdtsc    intrin.h   "__rdtsc()"
5786     check_builtin mm_empty mmintrin.h "_mm_empty()"
5787
5788     enable local_aligned
5789
5790     # check whether EBP is available on x86
5791     # As 'i' is stored on the stack, this program will crash
5792     # if the base pointer is used to access it because the
5793     # base pointer is cleared in the inline assembly code.
5794     check_exec_crash <<EOF && enable ebp_available
5795 volatile int i=0;
5796 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5797 return i;
5798 EOF
5799
5800     # check whether EBX is available on x86
5801     check_inline_asm ebx_available '""::"b"(0)' &&
5802         check_inline_asm ebx_available '"":::"%ebx"'
5803
5804     # check whether xmm clobbers are supported
5805     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5806
5807     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5808         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5809
5810     # check whether binutils is new enough to compile SSSE3/MMXEXT
5811     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5812     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5813
5814     probe_x86asm(){
5815         x86asmexe_probe=$1
5816         if test_cmd $x86asmexe_probe -v; then
5817             x86asmexe=$x86asmexe_probe
5818             x86asm_type=nasm
5819             x86asm_debug="-g -F dwarf"
5820             X86ASMDEP=
5821             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5822         elif test_cmd $x86asmexe_probe --version; then
5823             x86asmexe=$x86asmexe_probe
5824             x86asm_type=yasm
5825             x86asm_debug="-g dwarf2"
5826             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
5827             X86ASM_DEPFLAGS=
5828         fi
5829         check_x86asm x86asm "movbe ecx, [5]"
5830     }
5831
5832     if ! disabled_any asm mmx x86asm; then
5833         disable x86asm
5834         for program in $x86asmexe nasm yasm; do
5835             probe_x86asm $program && break
5836         done
5837         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
5838         X86ASMFLAGS="-f $objformat"
5839         enabled pic               && append X86ASMFLAGS "-DPIC"
5840         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
5841         case "$objformat" in
5842             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
5843         esac
5844
5845         check_x86asm avx512_external "vmovdqa32 [eax]{k1}{z}, zmm0"
5846         check_x86asm avx2_external   "vextracti128 xmm0, ymm0, 0"
5847         check_x86asm xop_external    "vpmacsdd xmm0, xmm1, xmm2, xmm3"
5848         check_x86asm fma4_external   "vfmaddps ymm0, ymm1, ymm2, ymm3"
5849         check_x86asm cpunop          "CPU amdnop"
5850     fi
5851
5852     case "$cpu" in
5853         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5854             disable fast_clz
5855         ;;
5856     esac
5857
5858 fi
5859
5860 check_cc intrinsics_neon arm_neon.h "int16x8_t test = vdupq_n_s16(0)"
5861
5862 check_ldflags -Wl,--as-needed
5863 check_ldflags -Wl,-z,noexecstack
5864
5865 if ! disabled network; then
5866     check_func getaddrinfo $network_extralibs
5867     check_func inet_aton $network_extralibs
5868
5869     check_type netdb.h "struct addrinfo"
5870     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5871     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5872     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5873     check_type poll.h "struct pollfd"
5874     check_type netinet/sctp.h "struct sctp_event_subscribe"
5875     check_struct "sys/socket.h" "struct msghdr" msg_flags
5876     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5877     check_type netinet/in.h "struct sockaddr_in6"
5878     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5879     check_type "sys/types.h sys/socket.h" socklen_t
5880
5881     # Prefer arpa/inet.h over winsock2
5882     if check_headers arpa/inet.h ; then
5883         check_func closesocket
5884     elif check_headers winsock2.h ; then
5885         check_func_headers winsock2.h closesocket -lws2 &&
5886             network_extralibs="-lws2" ||
5887         { check_func_headers winsock2.h closesocket -lws2_32 &&
5888             network_extralibs="-lws2_32"; } || disable winsock2_h network
5889         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5890
5891         check_type ws2tcpip.h socklen_t
5892         check_type ws2tcpip.h "struct addrinfo"
5893         check_type ws2tcpip.h "struct group_source_req"
5894         check_type ws2tcpip.h "struct ip_mreq_source"
5895         check_type ws2tcpip.h "struct ipv6_mreq"
5896         check_type winsock2.h "struct pollfd"
5897         check_struct winsock2.h "struct sockaddr" sa_len
5898         check_type ws2tcpip.h "struct sockaddr_in6"
5899         check_type ws2tcpip.h "struct sockaddr_storage"
5900     else
5901         disable network
5902     fi
5903 fi
5904
5905 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5906 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5907 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5908 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5909 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5910 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5911 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5912
5913 case "$custom_allocator" in
5914     jemalloc)
5915         # jemalloc by default does not use a prefix
5916         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5917     ;;
5918     tcmalloc)
5919         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
5920         malloc_prefix=tc_
5921     ;;
5922 esac
5923
5924 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5925 check_func  ${malloc_prefix}memalign            && enable memalign
5926 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5927
5928 check_func  access
5929 check_func_headers stdlib.h arc4random
5930 check_lib   clock_gettime time.h clock_gettime || check_lib clock_gettime time.h clock_gettime -lrt
5931 check_func  fcntl
5932 check_func  fork
5933 check_func  gethrtime
5934 check_func  getopt
5935 check_func  getrusage
5936 check_func  gettimeofday
5937 check_func  isatty
5938 check_func  mkstemp
5939 check_func  mmap
5940 check_func  mprotect
5941 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5942 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
5943 check_func  sched_getaffinity
5944 check_func  setrlimit
5945 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5946 check_func  strerror_r
5947 check_func  sysconf
5948 check_func  sysctl
5949 check_func  usleep
5950
5951 check_func_headers conio.h kbhit
5952 check_func_headers io.h setmode
5953 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5954 check_func_headers mach/mach_time.h mach_absolute_time
5955 check_func_headers stdlib.h getenv
5956 check_func_headers sys/stat.h lstat
5957
5958 check_func_headers windows.h GetProcessAffinityMask
5959 check_func_headers windows.h GetProcessTimes
5960 check_func_headers windows.h GetSystemTimeAsFileTime
5961 check_func_headers windows.h LoadLibrary
5962 check_func_headers windows.h MapViewOfFile
5963 check_func_headers windows.h PeekNamedPipe
5964 check_func_headers windows.h SetConsoleTextAttribute
5965 check_func_headers windows.h SetConsoleCtrlHandler
5966 check_func_headers windows.h Sleep
5967 check_func_headers windows.h VirtualAlloc
5968 check_func_headers glob.h glob
5969 enabled xlib &&
5970     check_lib xlib "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5971
5972 check_headers direct.h
5973 check_headers dirent.h
5974 check_headers dxgidebug.h
5975 check_headers dxva.h
5976 check_headers dxva2api.h -D_WIN32_WINNT=0x0600
5977 check_headers io.h
5978 check_headers linux/perf_event.h
5979 check_headers libcrystalhd/libcrystalhd_if.h
5980 check_headers malloc.h
5981 check_headers net/udplite.h
5982 check_headers poll.h
5983 check_headers sys/param.h
5984 check_headers sys/resource.h
5985 check_headers sys/select.h
5986 check_headers sys/time.h
5987 check_headers sys/un.h
5988 check_headers termios.h
5989 check_headers unistd.h
5990 check_headers valgrind/valgrind.h
5991 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5992 check_headers windows.h
5993 check_headers X11/extensions/XvMClib.h
5994 check_headers asm/types.h
5995
5996 # it seems there are versions of clang in some distros that try to use the
5997 # gcc headers, which explodes for stdatomic
5998 # so we also check that atomics actually work here
5999 check_builtin stdatomic stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0); foo += bar"
6000
6001 check_lib advapi32 "windows.h"            RegCloseKey          -ladvapi32
6002 check_lib bcrypt   "windows.h bcrypt.h"   BCryptGenRandom      -lbcrypt &&
6003     check_cpp_condition bcrypt bcrypt.h "defined BCRYPT_RNG_ALGORITHM"
6004 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
6005 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
6006 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
6007
6008 check_lib android android/native_window.h ANativeWindow_acquire -landroid
6009 check_lib mediandk "stdint.h media/NdkImage.h" AImage_delete -lmediandk
6010 check_lib camera2ndk "stdbool.h stdint.h camera/NdkCameraManager.h" ACameraManager_create -lcamera2ndk
6011
6012 enabled appkit       && check_apple_framework AppKit
6013 enabled audiotoolbox && check_apple_framework AudioToolbox
6014 enabled avfoundation && check_apple_framework AVFoundation
6015 enabled coreimage    && check_apple_framework CoreImage
6016 enabled videotoolbox && check_apple_framework VideoToolbox
6017
6018 check_apple_framework CoreFoundation
6019 check_apple_framework CoreMedia
6020 check_apple_framework CoreVideo
6021
6022 enabled avfoundation && {
6023     disable coregraphics applicationservices
6024     check_lib coregraphics        CoreGraphics/CoreGraphics.h               CGGetActiveDisplayList "-framework CoreGraphics" ||
6025     check_lib applicationservices ApplicationServices/ApplicationServices.h CGGetActiveDisplayList "-framework ApplicationServices"; }
6026
6027 enabled videotoolbox && {
6028     check_lib coreservices CoreServices/CoreServices.h UTGetOSTypeFromString "-framework CoreServices"
6029     check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_HEVC "-framework CoreMedia"
6030     check_func_headers CoreVideo/CVPixelBuffer.h kCVPixelFormatType_420YpCbCr10BiPlanarVideoRange "-framework CoreVideo"
6031 }
6032
6033 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
6034
6035 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
6036 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
6037 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
6038 check_type "windows.h d3d11.h" "ID3D11VideoContext"
6039 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
6040
6041 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
6042
6043 if enabled cuda_sdk; then
6044     warn "Option --enable-cuda-sdk is deprecated. Use --enable-cuda-nvcc instead."
6045     enable cuda_nvcc
6046 fi
6047
6048 if ! disabled ffnvcodec; then
6049     ffnv_hdr_list="ffnvcodec/nvEncodeAPI.h ffnvcodec/dynlink_cuda.h ffnvcodec/dynlink_cuviddec.h ffnvcodec/dynlink_nvcuvid.h"
6050     check_pkg_config ffnvcodec "ffnvcodec >= 9.0.18.0" "$ffnv_hdr_list" "" || \
6051       check_pkg_config ffnvcodec "ffnvcodec >= 8.2.15.8 ffnvcodec < 8.3" "$ffnv_hdr_list" "" || \
6052       check_pkg_config ffnvcodec "ffnvcodec >= 8.1.24.9 ffnvcodec < 8.2" "$ffnv_hdr_list" "" || \
6053       check_pkg_config ffnvcodec "ffnvcodec >= 8.0.14.9 ffnvcodec < 8.1" "$ffnv_hdr_list" ""
6054 fi
6055
6056 check_cpp_condition winrt windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)"
6057
6058 if ! disabled w32threads && ! enabled pthreads; then
6059     check_func_headers "windows.h process.h" _beginthreadex &&
6060         check_type "windows.h" CONDITION_VARIABLE &&
6061         check_type "windows.h" INIT_ONCE &&
6062         enable w32threads || disable w32threads
6063     if ! enabled w32threads && enabled winrt; then
6064         check_func_headers "windows.h" CreateThread &&
6065             enable w32threads || disable w32threads
6066     fi
6067 fi
6068
6069 # check for some common methods of building with pthread support
6070 # do this before the optional library checks as some of them require pthreads
6071 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
6072     if check_lib pthreads pthread.h pthread_join   -pthread &&
6073        check_lib pthreads pthread.h pthread_create -pthread; then
6074         add_cflags -pthread
6075     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
6076          check_lib pthreads pthread.h pthread_create -pthreads; then
6077         add_cflags -pthreads
6078     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
6079          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
6080         add_cflags -ldl -pthread
6081     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
6082          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
6083         :
6084     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
6085          check_lib pthreads pthread.h pthread_create -lpthread; then
6086         :
6087     elif check_func pthread_join && check_func pthread_create; then
6088         enable pthreads
6089     fi
6090     check_cc pthreads "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER"
6091
6092     if enabled pthreads; then
6093         check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
6094         check_func pthread_cancel $pthreads_extralibs
6095     fi
6096 fi
6097
6098 enabled  zlib && { check_pkg_config zlib zlib "zlib.h" zlibVersion ||
6099                    check_lib zlib   zlib.h      zlibVersion    -lz; }
6100 enabled bzlib && check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
6101 enabled  lzma && check_lib lzma   lzma.h lzma_version_number -llzma
6102
6103 # On some systems dynamic loading requires no extra linker flags
6104 check_lib libdl dlfcn.h "dlopen dlsym" || check_lib libdl dlfcn.h "dlopen dlsym" -ldl
6105
6106 check_lib libm math.h sin -lm
6107
6108 atan2f_args=2
6109 copysign_args=2
6110 hypot_args=2
6111 ldexpf_args=2
6112 powf_args=2
6113
6114 for func in $MATH_FUNCS; do
6115     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
6116 done
6117
6118 for func in $COMPLEX_FUNCS; do
6119     eval check_complexfunc $func \${${func}_args:-1}
6120 done
6121
6122 # these are off by default, so fail if requested and not available
6123 enabled cuda_nvcc         && { check_nvcc || die "ERROR: failed checking for nvcc."; }
6124 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
6125 enabled decklink          && { require_headers DeckLinkAPI.h &&
6126                                { test_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a090500" || die "ERROR: Decklink API version must be >= 10.9.5."; } }
6127 enabled frei0r            && require_headers "frei0r.h dlfcn.h"
6128 enabled gmp               && require gmp gmp.h mpz_export -lgmp
6129 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
6130 enabled jni               && { [ $target_os = "android" ] && check_headers jni.h && enabled pthreads || die "ERROR: jni not found"; }
6131 enabled ladspa            && require_headers "ladspa.h dlfcn.h"
6132 enabled libaom            && require_pkg_config libaom "aom >= 1.0.0" aom/aom_codec.h aom_codec_version
6133 enabled libaribb24        && { check_pkg_config libaribb24 "aribb24 > 1.0.3" "aribb24/aribb24.h" arib_instance_new ||
6134                                { enabled gpl && require_pkg_config libaribb24 aribb24 "aribb24/aribb24.h" arib_instance_new; } ||
6135                                die "ERROR: libaribb24 requires version higher than 1.0.3 or --enable-gpl."; }
6136 enabled lv2               && require_pkg_config lv2 lilv-0 "lilv/lilv.h" lilv_world_new
6137 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
6138 enabled libass            && require_pkg_config libass libass ass/ass.h ass_library_init
6139 enabled libbluray         && require_pkg_config libbluray libbluray libbluray/bluray.h bd_open
6140 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
6141 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
6142                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
6143                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
6144 enabled libcaca           && require_pkg_config libcaca caca caca.h caca_create_canvas
6145 enabled libcodec2         && require libcodec2 codec2/codec2.h codec2_create -lcodec2
6146 enabled libdav1d          && require_pkg_config libdav1d "dav1d >= 0.2.1" "dav1d/dav1d.h" dav1d_version
6147 enabled libdavs2          && require_pkg_config libdavs2 "davs2 >= 1.6.0" davs2.h davs2_decoder_open
6148 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
6149 enabled libdrm            && require_pkg_config libdrm libdrm xf86drm.h drmGetVersion
6150 enabled libfdk_aac        && { check_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
6151                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
6152                                  warn "using libfdk without pkg-config"; } }
6153 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"
6154 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
6155 enabled fontconfig        && enable libfontconfig
6156 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
6157 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
6158 enabled libfribidi        && require_pkg_config libfribidi fribidi fribidi.h fribidi_version_info
6159 enabled libgme            && { check_pkg_config libgme libgme gme/gme.h gme_new_emu ||
6160                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }
6161 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
6162                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
6163                                done || die "ERROR: libgsm not found"; }
6164 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc $pthreads_extralibs
6165 enabled libklvanc         && require libklvanc libklvanc/vanc.h klvanc_context_create -lklvanc
6166 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
6167 enabled liblensfun        && require_pkg_config liblensfun lensfun lensfun.h lf_db_new
6168 # While it may appear that require is being used as a pkg-config
6169 # fallback for libmfx, it is actually being used to detect a different
6170 # installation route altogether.  If libmfx is installed via the Intel
6171 # Media SDK or Intel Media Server Studio, these don't come with
6172 # pkg-config support.  Instead, users should make sure that the build
6173 # can find the libraries and headers through other means.
6174 enabled libmfx            && { check_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit ||
6175                                { require libmfx "mfx/mfxvideo.h" MFXInit "-llibmfx $advapi32_extralibs" && warn "using libmfx without pkg-config"; } }
6176 enabled libmodplug        && require_pkg_config libmodplug libmodplug libmodplug/modplug.h ModPlug_Load
6177 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame $libm_extralibs
6178 enabled libmysofa         && { check_pkg_config libmysofa libmysofa mysofa.h mysofa_load ||
6179                                require libmysofa mysofa.h mysofa_load -lmysofa $zlib_extralibs; }
6180 enabled libnpp            && { check_lib libnpp npp.h nppGetLibVersion -lnppig -lnppicc -lnppc -lnppidei ||
6181                                check_lib libnpp npp.h nppGetLibVersion -lnppi -lnppc -lnppidei ||
6182                                die "ERROR: libnpp not found"; }
6183 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
6184 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
6185 enabled libopencv         && { check_headers opencv2/core/core_c.h &&
6186                                { check_pkg_config libopencv opencv opencv2/core/core_c.h cvCreateImageHeader ||
6187                                  require libopencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
6188                                require_pkg_config libopencv opencv opencv/cxcore.h cvCreateImageHeader; }
6189 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
6190 enabled libopenjpeg       && { check_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version ||
6191                                { require_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } }
6192 enabled libopenmpt        && require_pkg_config libopenmpt "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create -lstdc++ && append libopenmpt_extralibs "-lstdc++"
6193 enabled libopus           && {
6194     enabled libopus_decoder && {
6195         require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
6196     }
6197     enabled libopus_encoder && {
6198         require_pkg_config libopus opus opus_multistream.h opus_multistream_surround_encoder_create
6199     }
6200 }
6201 enabled libpulse          && require_pkg_config libpulse libpulse pulse/pulseaudio.h pa_context_new
6202 enabled librsvg           && require_pkg_config librsvg librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
6203 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
6204 enabled librubberband     && require_pkg_config librubberband "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new -lstdc++ && append librubberband_extralibs "-lstdc++"
6205 enabled libshine          && require_pkg_config libshine shine shine/layer3.h shine_encode_buffer
6206 enabled libsmbclient      && { check_pkg_config libsmbclient smbclient libsmbclient.h smbc_init ||
6207                                require libsmbclient libsmbclient.h smbc_init -lsmbclient; }
6208 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy -lstdc++
6209 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
6210 enabled libssh            && require_pkg_config libssh libssh libssh/sftp.h sftp_init
6211 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init
6212 enabled libsrt            && require_pkg_config libsrt "srt >= 1.3.0" srt/srt.h srt_socket
6213 enabled libtensorflow     && require libtensorflow tensorflow/c/c_api.h TF_Version -ltensorflow
6214 enabled libtesseract      && require_pkg_config libtesseract tesseract tesseract/capi.h TessBaseAPICreate
6215 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
6216 enabled libtls            && require_pkg_config libtls libtls tls.h tls_configure
6217 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
6218                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
6219                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
6220 enabled libv4l2           && require_pkg_config libv4l2 libv4l2 libv4l2.h v4l2_ioctl
6221 enabled libvidstab        && require_pkg_config libvidstab "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
6222 enabled libvmaf           && require_pkg_config libvmaf "libvmaf >= 1.3.9" libvmaf.h compute_vmaf
6223 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
6224 enabled libvorbis         && require_pkg_config libvorbis vorbis vorbis/codec.h vorbis_info_init &&
6225                              require_pkg_config libvorbisenc vorbisenc vorbis/vorbisenc.h vorbis_encode_init
6226
6227 enabled libvpx            && {
6228     enabled libvpx_vp8_decoder && {
6229         check_pkg_config libvpx_vp8_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
6230             check_lib libvpx_vp8_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp8_dx VPX_IMG_FMT_HIGHBITDEPTH" "-lvpx $libm_extralibs $pthreads_extralibs"
6231     }
6232     enabled libvpx_vp8_encoder && {
6233         check_pkg_config libvpx_vp8_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
6234             check_lib libvpx_vp8_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp8_cx VPX_IMG_FMT_HIGHBITDEPTH" "-lvpx $libm_extralibs $pthreads_extralibs"
6235     }
6236     enabled libvpx_vp9_decoder && {
6237         check_pkg_config libvpx_vp9_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
6238             check_lib libvpx_vp9_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx VPX_IMG_FMT_HIGHBITDEPTH" "-lvpx $libm_extralibs $pthreads_extralibs"
6239     }
6240     enabled libvpx_vp9_encoder && {
6241         check_pkg_config libvpx_vp9_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
6242             check_lib libvpx_vp9_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VPX_IMG_FMT_HIGHBITDEPTH" "-lvpx $libm_extralibs $pthreads_extralibs"
6243     }
6244     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
6245         die "libvpx enabled but no supported decoders found"
6246     fi
6247 }
6248
6249 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
6250 enabled libwebp           && {
6251     enabled libwebp_encoder      && require_pkg_config libwebp "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
6252     enabled libwebp_anim_encoder && check_pkg_config libwebp_anim_encoder "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit; }
6253 enabled libx264           && { check_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode ||
6254                                { require libx264 "stdint.h x264.h" x264_encoder_encode "-lx264 $pthreads_extralibs $libm_extralibs" &&
6255                                  warn "using libx264 without pkg-config"; } } &&
6256                              require_cpp_condition libx264 x264.h "X264_BUILD >= 118" &&
6257                              check_cpp_condition libx262 x264.h "X264_MPEG2"
6258 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
6259                              require_cpp_condition libx265 x265.h "X265_BUILD >= 68"
6260 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode "-lxavs $pthreads_extralibs $libm_extralibs"
6261 enabled libxavs2          && require_pkg_config libxavs2 "xavs2 >= 1.3.0" "stdint.h xavs2.h" xavs2_api_get
6262 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
6263 enabled libzimg           && require_pkg_config libzimg "zimg >= 2.7.0" zimg.h zimg_get_api_version
6264 enabled libzmq            && require_pkg_config libzmq libzmq zmq.h zmq_ctx_new
6265 enabled libzvbi           && require_pkg_config libzvbi zvbi-0.2 libzvbi.h vbi_decoder_new &&
6266                              { test_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
6267                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
6268 enabled libxml2           && require_pkg_config libxml2 libxml-2.0 libxml2/libxml/xmlversion.h xmlCheckVersion
6269 enabled mbedtls           && { check_pkg_config mbedtls mbedtls mbedtls/x509_crt.h mbedtls_x509_crt_init ||
6270                                check_pkg_config mbedtls mbedtls mbedtls/ssl.h mbedtls_ssl_init ||
6271                                check_lib mbedtls mbedtls/ssl.h mbedtls_ssl_init -lmbedtls -lmbedx509 -lmbedcrypto ||
6272                                die "ERROR: mbedTLS not found"; }
6273 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
6274 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
6275                                { ! enabled cross_compile &&
6276                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
6277                                  add_ldflags -L/opt/vc/lib/ &&
6278                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
6279                                die "ERROR: mmal not found" &&
6280                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
6281 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
6282                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
6283                                die "ERROR: openal not found"; } &&
6284                              { test_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
6285                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
6286 enabled opencl            && { check_pkg_config opencl OpenCL CL/cl.h clEnqueueNDRangeKernel ||
6287                                check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
6288                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
6289                                die "ERROR: opencl not found"; } &&
6290                              { test_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
6291                                test_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
6292                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
6293 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
6294                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
6295                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
6296                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
6297                                die "ERROR: opengl not found."
6298                              }
6299 enabled omx               && require_headers OMX_Core.h
6300 enabled omx_rpi           && { check_headers OMX_Core.h ||
6301                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_headers OMX_Core.h ; } ||
6302                                die "ERROR: OpenMAX IL headers not found"; } && enable omx
6303 enabled openssl           && { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
6304                                check_pkg_config openssl openssl openssl/ssl.h SSL_library_init ||
6305                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
6306                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
6307                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
6308                                die "ERROR: openssl not found"; }
6309 enabled pocketsphinx      && require_pkg_config pocketsphinx pocketsphinx pocketsphinx/pocketsphinx.h ps_init
6310 enabled rkmpp             && { require_pkg_config rkmpp rockchip_mpp  rockchip/rk_mpi.h mpp_create &&
6311                                require_pkg_config rockchip_mpp "rockchip_mpp >= 1.3.7" rockchip/rk_mpi.h mpp_create &&
6312                                { enabled libdrm ||
6313                                  die "ERROR: rkmpp requires --enable-libdrm"; }
6314                              }
6315 enabled vapoursynth       && require_pkg_config vapoursynth "vapoursynth-script >= 42" VSScript.h vsscript_init
6316
6317
6318 if enabled gcrypt; then
6319     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
6320     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
6321         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
6322         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
6323         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
6324             die "ERROR: gcrypt not found"
6325         add_cflags $gcrypt_cflags
6326     else
6327         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
6328     fi
6329 fi
6330
6331 if enabled sdl2; then
6332     SDL2_CONFIG="${cross_prefix}sdl2-config"
6333     test_pkg_config sdl2 "sdl2 >= 2.0.1 sdl2 < 2.1.0" SDL_events.h SDL_PollEvent
6334     if disabled sdl2 && "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6335         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6336         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6337         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6338         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6339         check_func_headers SDL_events.h SDL_PollEvent $sdl2_extralibs $sdl2_cflags &&
6340             enable sdl2
6341     fi
6342     if test $target_os = "mingw32"; then
6343         sdl2_extralibs=$(filter_out '-mwindows' $sdl2_extralibs)
6344     fi
6345 fi
6346
6347 if enabled decklink; then
6348     case $target_os in
6349         mingw32*|mingw64*|win32|win64)
6350             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6351             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6352             ;;
6353     esac
6354 fi
6355
6356 enabled securetransport &&
6357     check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6358     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" ||
6359         disable securetransport
6360
6361 enabled securetransport &&
6362     check_func SecItemImport "-Wl,-framework,CoreFoundation -Wl,-framework,Security"
6363
6364 enabled schannel &&
6365     check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6366     test_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" &&
6367     schannel_extralibs="-lsecur32" ||
6368         disable schannel
6369
6370 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6371 enabled makeinfo \
6372     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6373     && enable makeinfo_html || disable makeinfo_html
6374 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6375 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6376 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6377 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6378
6379 # check V4L2 codecs available in the API
6380 check_headers linux/fb.h
6381 check_headers linux/videodev2.h
6382 test_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6383 check_cc v4l2_m2m linux/videodev2.h "int i = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_VIDEO_M2M | V4L2_BUF_FLAG_LAST;"
6384 check_cc vc1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VC1_ANNEX_G;"
6385 check_cc mpeg1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG1;"
6386 check_cc mpeg2_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG2;"
6387 check_cc mpeg4_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG4;"
6388 check_cc hevc_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_HEVC;"
6389 check_cc h263_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H263;"
6390 check_cc h264_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H264;"
6391 check_cc vp8_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP8;"
6392 check_cc vp9_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP9;"
6393
6394 check_headers sys/videoio.h
6395 test_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6396
6397 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6398 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6399 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6400 # w32api 3.12 had it defined wrong
6401 check_cpp_condition vfwcap_defines vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER"
6402
6403 check_type "dshow.h" IBaseFilter
6404
6405 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6406 check_headers "dev/bktr/ioctl_meteor.h dev/bktr/ioctl_bt848.h"                   ||
6407     check_headers "machine/ioctl_meteor.h machine/ioctl_bt848.h"                 ||
6408     check_headers "dev/video/meteor/ioctl_meteor.h dev/video/bktr/ioctl_bt848.h" ||
6409     check_headers "dev/ic/bt8xx.h"
6410
6411 if check_struct sys/soundcard.h audio_buf_info bytes; then
6412     enable_sanitized sys/soundcard.h
6413 else
6414     test_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_sanitized sys/soundcard.h
6415     #include <sys/soundcard.h>
6416     audio_buf_info abc;
6417 EOF
6418 fi
6419
6420 enabled alsa && check_pkg_config alsa alsa "alsa/asoundlib.h" snd_pcm_htimestamp ||
6421     check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
6422
6423 enabled libjack &&
6424     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
6425
6426 enabled sndio && check_lib sndio sndio.h sio_open -lsndio
6427
6428 if enabled libcdio; then
6429     check_pkg_config libcdio libcdio_paranoia "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open ||
6430     check_pkg_config libcdio libcdio_paranoia "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open ||
6431     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6432     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6433     die "ERROR: No usable libcdio/cdparanoia found"
6434 fi
6435
6436 enabled libxcb && check_pkg_config libxcb "xcb >= 1.4" xcb/xcb.h xcb_connect ||
6437     disable libxcb_shm libxcb_shape libxcb_xfixes
6438
6439 if enabled libxcb; then
6440     enabled libxcb_shm    && check_pkg_config libxcb_shm    xcb-shm    xcb/shm.h    xcb_shm_attach
6441     enabled libxcb_shape  && check_pkg_config libxcb_shape  xcb-shape  xcb/shape.h  xcb_shape_get_rectangles
6442     enabled libxcb_xfixes && check_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
6443 fi
6444
6445 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6446
6447 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6448 # the desktop api partition
6449 test_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
6450 #ifdef WINAPI_FAMILY
6451 #include <winapifamily.h>
6452 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
6453 #error desktop, not uwp
6454 #else
6455 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
6456 #endif
6457 #else
6458 #error no family set
6459 #endif
6460 EOF
6461
6462 enabled vaapi &&
6463     check_pkg_config vaapi "libva >= 0.35.0" "va/va.h" vaInitialize
6464
6465 if enabled vaapi; then
6466     check_pkg_config vaapi_drm "libva-drm" "va/va_drm.h" vaGetDisplayDRM
6467
6468     if enabled xlib; then
6469         check_pkg_config vaapi_x11 "libva-x11" "va/va_x11.h" vaGetDisplay
6470     fi
6471
6472     check_cpp_condition vaapi_1 "va/va.h" "VA_CHECK_VERSION(1, 0, 0)"
6473
6474     check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
6475     check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
6476     check_struct "va/va.h va/va_vpp.h" "VAProcPipelineCaps" rotation_flags
6477     check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
6478     check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
6479     check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
6480     check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
6481 fi
6482
6483 if enabled_all opencl libdrm ; then
6484     check_type "CL/cl_intel.h" "clCreateImageFromFdINTEL_fn" &&
6485         enable opencl_drm_beignet
6486     check_func_headers "CL/cl_ext.h" clImportMemoryARM &&
6487         enable opencl_drm_arm
6488 fi
6489
6490 if enabled_all opencl vaapi ; then
6491     if enabled opencl_drm_beignet ; then
6492         enable opencl_vaapi_beignet
6493     else
6494         check_type "CL/cl.h CL/cl_va_api_media_sharing_intel.h" "clCreateFromVA_APIMediaSurfaceINTEL_fn" &&
6495             enable opencl_vaapi_intel_media
6496     fi
6497 fi
6498
6499 if enabled_all opencl dxva2 ; then
6500     check_type "CL/cl_dx9_media_sharing.h" cl_dx9_surface_info_khr &&
6501         enable opencl_dxva2
6502 fi
6503
6504 if enabled_all opencl d3d11va ; then
6505     check_type "CL/cl_d3d11.h" clGetDeviceIDsFromD3D11KHR_fn &&
6506         enable opencl_d3d11
6507 fi
6508
6509 enabled vdpau &&
6510     check_cpp_condition vdpau vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP"
6511
6512 enabled vdpau &&
6513     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6514
6515 enabled crystalhd && check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
6516
6517 if enabled x86; then
6518     case $target_os in
6519         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6520             ;;
6521         *)
6522             disable ffnvcodec cuvid nvdec nvenc
6523             ;;
6524     esac
6525 elif enabled ppc64 && ! enabled bigendian; then
6526     case $target_os in
6527         linux)
6528             ;;
6529         *)
6530             disable ffnvcodec cuvid nvdec nvenc
6531             ;;
6532     esac
6533 else
6534     disable ffnvcodec cuvid nvdec nvenc
6535 fi
6536
6537 enabled ffnvcodec && enable cuda
6538
6539 enabled nvenc &&
6540     test_cc -I$source_path <<EOF || disable nvenc
6541 #include <ffnvcodec/nvEncodeAPI.h>
6542 NV_ENCODE_API_FUNCTION_LIST flist;
6543 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6544 int main(void) { return 0; }
6545 EOF
6546
6547 enabled amf &&
6548     check_cpp_condition amf "AMF/core/Version.h" \
6549         "(AMF_VERSION_MAJOR << 48 | AMF_VERSION_MINOR << 32 | AMF_VERSION_RELEASE << 16 | AMF_VERSION_BUILD_NUM) >= 0x0001000400040001"
6550
6551 # Funny iconv installations are not unusual, so check it after all flags have been set
6552 if enabled libc_iconv; then
6553     check_func_headers iconv.h iconv
6554 elif enabled iconv; then
6555     check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6556 fi
6557
6558 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6559
6560 # add some useful compiler flags if supported
6561 check_cflags -Wdeclaration-after-statement
6562 check_cflags -Wall
6563 check_cflags -Wdisabled-optimization
6564 check_cflags -Wpointer-arith
6565 check_cflags -Wredundant-decls
6566 check_cflags -Wwrite-strings
6567 check_cflags -Wtype-limits
6568 check_cflags -Wundef
6569 check_cflags -Wmissing-prototypes
6570 check_cflags -Wno-pointer-to-int-cast
6571 check_cflags -Wstrict-prototypes
6572 check_cflags -Wempty-body
6573
6574 if enabled extra_warnings; then
6575     check_cflags -Wcast-qual
6576     check_cflags -Wextra
6577     check_cflags -Wpedantic
6578 fi
6579
6580 check_disable_warning(){
6581     warning_flag=-W${1#-Wno-}
6582     test_cflags $unknown_warning_flags $warning_flag && add_cflags $1
6583 }
6584
6585 test_cflags -Werror=unused-command-line-argument &&
6586     append unknown_warning_flags "-Werror=unused-command-line-argument"
6587 test_cflags -Werror=unknown-warning-option &&
6588     append unknown_warning_flags "-Werror=unknown-warning-option"
6589
6590 check_disable_warning -Wno-parentheses
6591 check_disable_warning -Wno-switch
6592 check_disable_warning -Wno-format-zero-length
6593 check_disable_warning -Wno-pointer-sign
6594 check_disable_warning -Wno-unused-const-variable
6595 check_disable_warning -Wno-bool-operation
6596 check_disable_warning -Wno-char-subscripts
6597
6598 check_disable_warning_headers(){
6599     warning_flag=-W${1#-Wno-}
6600     test_cflags $warning_flag && add_cflags_headers $1
6601 }
6602
6603 check_disable_warning_headers -Wno-deprecated-declarations
6604 check_disable_warning_headers -Wno-unused-variable
6605
6606 test_cc <<EOF && enable blocks_extension
6607 void (^block)(void);
6608 EOF
6609
6610 # add some linker flags
6611 check_ldflags -Wl,--warn-common
6612 check_ldflags -Wl,-rpath-link=:libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6613 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir && add_ldsoflags -Wl,-rpath,$libdir
6614 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6615
6616 # add some strip flags
6617 check_stripflags -x
6618
6619 enabled neon_clobber_test &&
6620     check_ldflags -Wl,--wrap,avcodec_open2              \
6621                   -Wl,--wrap,avcodec_decode_audio4      \
6622                   -Wl,--wrap,avcodec_decode_video2      \
6623                   -Wl,--wrap,avcodec_decode_subtitle2   \
6624                   -Wl,--wrap,avcodec_encode_audio2      \
6625                   -Wl,--wrap,avcodec_encode_video2      \
6626                   -Wl,--wrap,avcodec_encode_subtitle    \
6627                   -Wl,--wrap,avcodec_send_packet        \
6628                   -Wl,--wrap,avcodec_receive_packet     \
6629                   -Wl,--wrap,avcodec_send_frame         \
6630                   -Wl,--wrap,avcodec_receive_frame      \
6631                   -Wl,--wrap,swr_convert                \
6632                   -Wl,--wrap,avresample_convert ||
6633     disable neon_clobber_test
6634
6635 enabled xmm_clobber_test &&
6636     check_ldflags -Wl,--wrap,avcodec_open2              \
6637                   -Wl,--wrap,avcodec_decode_audio4      \
6638                   -Wl,--wrap,avcodec_decode_video2      \
6639                   -Wl,--wrap,avcodec_decode_subtitle2   \
6640                   -Wl,--wrap,avcodec_encode_audio2      \
6641                   -Wl,--wrap,avcodec_encode_video2      \
6642                   -Wl,--wrap,avcodec_encode_subtitle    \
6643                   -Wl,--wrap,avcodec_send_packet        \
6644                   -Wl,--wrap,avcodec_receive_packet     \
6645                   -Wl,--wrap,avcodec_send_frame         \
6646                   -Wl,--wrap,avcodec_receive_frame      \
6647                   -Wl,--wrap,swr_convert                \
6648                   -Wl,--wrap,avresample_convert         \
6649                   -Wl,--wrap,sws_scale ||
6650     disable xmm_clobber_test
6651
6652 check_ld "cc" proper_dce <<EOF
6653 extern const int array[512];
6654 static inline int func(void) { return array[0]; }
6655 int main(void) { return 0; }
6656 EOF
6657
6658 if enabled proper_dce; then
6659     echo "X { local: *; };" > $TMPV
6660     if test_ldflags -Wl,${version_script},$TMPV; then
6661         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6662         quotes='""'
6663         test_cc <<EOF && enable symver_asm_label
6664 void ff_foo(void) __asm__ ("av_foo@VERSION");
6665 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6666 EOF
6667         test_cc <<EOF && enable symver_gnu_asm
6668 __asm__(".symver ff_foo,av_foo@VERSION");
6669 void ff_foo(void) {}
6670 EOF
6671     fi
6672 fi
6673
6674 if [ -z "$optflags" ]; then
6675     if enabled small; then
6676         optflags=$cflags_size
6677     elif enabled optimizations; then
6678         optflags=$cflags_speed
6679     else
6680         optflags=$cflags_noopt
6681     fi
6682 fi
6683
6684 if [ -z "$nvccflags" ]; then
6685     nvccflags=$nvccflags_default
6686 fi
6687
6688 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6689     nvccflags="$nvccflags -m64"
6690 else
6691     nvccflags="$nvccflags -m32"
6692 fi
6693
6694 check_optflags(){
6695     check_cflags "$@"
6696     enabled lto && check_ldflags "$@"
6697 }
6698
6699 check_optflags $optflags
6700 check_optflags -fno-math-errno
6701 check_optflags -fno-signed-zeros
6702
6703 if enabled lto; then
6704     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6705     check_cflags  -flto
6706     check_ldflags -flto $cpuflags
6707     disable inline_asm_direct_symbol_refs
6708 fi
6709
6710 enabled ftrapv && check_cflags -ftrapv
6711
6712 test_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6713 int x;
6714 EOF
6715
6716
6717 if enabled icc; then
6718     # Just warnings, no remarks
6719     check_cflags -w1
6720     # -wd: Disable following warnings
6721     # 144, 167, 556: -Wno-pointer-sign
6722     # 188: enumerated type mixed with another type
6723     # 1292: attribute "foo" ignored
6724     # 1419: external declaration in primary source file
6725     # 10006: ignoring unknown option -fno-signed-zeros
6726     # 10148: ignoring unknown option -Wno-parentheses
6727     # 10156: ignoring option '-W'; no argument required
6728     # 13200: No EMMS instruction before call to function
6729     # 13203: No EMMS instruction before return from function
6730     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6731     # 11030: Warning unknown option --as-needed
6732     # 10156: ignoring option '-export'; no argument required
6733     check_ldflags -wd10156,11030
6734     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6735     enable ebp_available
6736     # The test above does not test linking
6737     enabled lto && disable symver_asm_label
6738     if enabled x86_32; then
6739         icc_version=$($cc -dumpversion)
6740         test ${icc_version%%.*} -ge 11 &&
6741             check_cflags -falign-stack=maintain-16-byte ||
6742             disable aligned_stack
6743     fi
6744 elif enabled gcc; then
6745     check_optflags -fno-tree-vectorize
6746     check_cflags -Werror=format-security
6747     check_cflags -Werror=implicit-function-declaration
6748     check_cflags -Werror=missing-prototypes
6749     check_cflags -Werror=return-type
6750     check_cflags -Werror=vla
6751     check_cflags -Wformat
6752     check_cflags -fdiagnostics-color=auto
6753     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6754     if enabled x86_32; then
6755         case $target_os in
6756         *bsd*)
6757             # BSDs don't guarantee a 16 byte aligned stack, but we can
6758             # request GCC to try to maintain 16 byte alignment throughout
6759             # function calls. Library entry points that might call assembly
6760             # functions align the stack. (The parameter means 2^4 bytes.)
6761             check_cflags -mpreferred-stack-boundary=4
6762             ;;
6763         esac
6764     fi
6765 elif enabled llvm_gcc; then
6766     check_cflags -mllvm -stack-alignment=16
6767 elif enabled clang; then
6768     if enabled x86_32; then
6769         # Clang doesn't support maintaining alignment without assuming the
6770         # same alignment in every function. If 16 byte alignment would be
6771         # enabled, one would also have to either add attribute_align_arg on
6772         # every single entry point into the libraries or enable -mstackrealign
6773         # (doing stack realignment in every single function).
6774         case $target_os in
6775         mingw32|win32|*bsd*)
6776             disable aligned_stack
6777             ;;
6778         *)
6779             check_cflags -mllvm -stack-alignment=16
6780             check_cflags -mstack-alignment=16
6781             ;;
6782         esac
6783     else
6784         check_cflags -mllvm -stack-alignment=16
6785         check_cflags -mstack-alignment=16
6786     fi
6787     check_cflags -Qunused-arguments
6788     check_cflags -Werror=implicit-function-declaration
6789     check_cflags -Werror=missing-prototypes
6790     check_cflags -Werror=return-type
6791 elif enabled cparser; then
6792     add_cflags -Wno-missing-variable-declarations
6793     add_cflags -Wno-empty-statement
6794 elif enabled armcc; then
6795     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6796     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6797     # 2523: use of inline assembly is deprecated
6798     add_cflags -W${armcc_opt},--diag_suppress=2523
6799     add_cflags -W${armcc_opt},--diag_suppress=1207
6800     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6801     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6802     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6803     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6804 elif enabled pathscale; then
6805     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6806     disable inline_asm
6807 elif enabled_any msvc icl; then
6808     enabled x86_32 && disable aligned_stack
6809     enabled_all x86_32 debug && add_cflags -Oy-
6810     enabled debug && add_ldflags -debug
6811     enable pragma_deprecated
6812     if enabled icl; then
6813         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6814         # (correctly) on icl 13.x.
6815         test_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6816             add_cflags -Qansi-alias
6817         # Some inline asm is not compilable in debug
6818         if enabled debug; then
6819             disable ebp_available
6820             disable ebx_available
6821         fi
6822     fi
6823     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6824     check_cpp_condition log2 crtversion.h "_VC_CRT_MAJOR_VERSION >= 12"
6825     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6826     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6827     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6828     # MSVC 2013 and newer can handle it fine.
6829     # If this declspec fails, force including stdlib.h before the restrict redefinition
6830     # happens in config.h.
6831     if [ $restrict_keyword != restrict ]; then
6832         test_cc <<EOF || add_cflags -FIstdlib.h
6833 __declspec($restrict_keyword) void *foo(int);
6834 EOF
6835     fi
6836     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6837     # Issue has been fixed in MSVC v19.00.24218.
6838     test_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6839         check_cflags -d2SSAOptimizer-
6840     # enable utf-8 source processing on VS2015 U2 and newer
6841     test_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6842         add_cflags -utf-8
6843 fi
6844
6845 for pfx in "" host_; do
6846     varname=${pfx%_}cc_type
6847     eval "type=\$$varname"
6848     if [ "$type" = "msvc" ]; then
6849         test_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6850 static inline int foo(int a) { return a; }
6851 EOF
6852     fi
6853 done
6854
6855 case $as_type in
6856     clang)
6857         add_asflags -Qunused-arguments
6858     ;;
6859 esac
6860
6861 case $ld_type in
6862     clang)
6863         check_ldflags -Qunused-arguments
6864     ;;
6865 esac
6866
6867 enable frame_thread_encoder
6868
6869 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6870
6871 check_deps $CONFIG_LIST       \
6872            $CONFIG_EXTRA      \
6873            $HAVE_LIST         \
6874            $ALL_COMPONENTS    \
6875
6876 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"
6877 enabled avresample && warn "Building with deprecated library libavresample"
6878
6879 case $target_os in
6880 haiku)
6881     disable memalign
6882     disable posix_memalign
6883     ;;
6884 *-dos|freedos|opendos)
6885     if test_cpp_condition sys/version.h "defined(__DJGPP__) && __DJGPP__ == 2 && __DJGPP_MINOR__ == 5"; then
6886         disable memalign
6887     fi
6888     ;;
6889 esac
6890
6891 flatten_extralibs(){
6892     nested_entries=
6893     list_name=$1
6894     eval list=\$${1}
6895     for entry in $list; do
6896         entry_copy=$entry
6897         resolve entry_copy
6898         flat_entries=
6899         for e in $entry_copy; do
6900             case $e in
6901                 *_extralibs) nested_entries="$nested_entries$e ";;
6902                           *) flat_entries="$flat_entries$e ";;
6903             esac
6904         done
6905         eval $entry="\$flat_entries"
6906     done
6907     append $list_name "$nested_entries"
6908
6909     resolve nested_entries
6910     if test -n "$(filter '*_extralibs' $nested_entries)"; then
6911         flatten_extralibs $list_name
6912     fi
6913 }
6914
6915 flatten_extralibs_wrapper(){
6916     list_name=$1
6917     flatten_extralibs $list_name
6918     unique $list_name
6919     resolve $list_name
6920     eval $list_name=\$\(\$ldflags_filter \$$list_name\)
6921     eval printf \''%s'\' \""\$$list_name"\"
6922 }
6923
6924 for linkunit in $LIBRARY_LIST; do
6925     unset current_extralibs
6926     eval components=\$$(toupper ${linkunit})_COMPONENTS_LIST
6927     for comp in ${components}; do
6928         enabled $comp || continue
6929         comp_extralibs="${comp}_extralibs"
6930         append current_extralibs $comp_extralibs
6931     done
6932     eval prepend ${linkunit}_extralibs $current_extralibs
6933 done
6934
6935 for linkunit in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
6936     eval ${linkunit}_extralibs=\$\(flatten_extralibs_wrapper ${linkunit}_extralibs\)
6937 done
6938
6939 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6940
6941 for thread in $THREADS_LIST; do
6942     if enabled $thread; then
6943         test -n "$thread_type" &&
6944             die "ERROR: Only one thread type must be selected." ||
6945             thread_type="$thread"
6946     fi
6947 done
6948
6949 if disabled stdatomic; then
6950     if enabled atomics_gcc; then
6951         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6952     elif enabled atomics_win32; then
6953         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6954     elif enabled atomics_suncc; then
6955         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6956     elif enabled pthreads; then
6957         add_compat atomics/pthread/stdatomic.o
6958         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6959     else
6960         enabled threads && die "Threading is enabled, but no atomics are available"
6961         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6962     fi
6963 fi
6964
6965 # Check if requested libraries were found.
6966 for lib in $AUTODETECT_LIBS; do
6967     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6968 done
6969
6970 enabled zlib && add_cppflags -DZLIB_CONST
6971
6972 # conditional library dependencies, in any order
6973 enabled afftdn_filter       && prepend avfilter_deps "avcodec"
6974 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6975 enabled afir_filter         && prepend avfilter_deps "avcodec"
6976 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6977 enabled aresample_filter    && prepend avfilter_deps "swresample"
6978 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6979 enabled bm3d_filter         && prepend avfilter_deps "avcodec"
6980 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6981 enabled convolve_filter     && prepend avfilter_deps "avcodec"
6982 enabled deconvolve_filter   && prepend avfilter_deps "avcodec"
6983 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6984 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6985 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6986 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6987 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
6988 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6989 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6990 enabled pan_filter          && prepend avfilter_deps "swresample"
6991 enabled pp_filter           && prepend avfilter_deps "postproc"
6992 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6993 enabled resample_filter && prepend avfilter_deps "avresample"
6994 enabled sab_filter          && prepend avfilter_deps "swscale"
6995 enabled scale_filter    && prepend avfilter_deps "swscale"
6996 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6997 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6998 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6999 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
7000 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
7001 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
7002 enabled smartblur_filter    && prepend avfilter_deps "swscale"
7003 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
7004 enabled spp_filter          && prepend avfilter_deps "avcodec"
7005 enabled sr_filter           && prepend avfilter_deps "avformat swscale"
7006 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
7007 enabled uspp_filter         && prepend avfilter_deps "avcodec"
7008 enabled zoompan_filter      && prepend avfilter_deps "swscale"
7009
7010 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
7011
7012 #FIXME
7013 enabled_any sdl2_outdev opengl_outdev && enabled sdl2 &&
7014     add_cflags $(filter_out '-Dmain=SDL_main' $sdl2_cflags)
7015
7016 enabled opus_decoder    && prepend avcodec_deps "swresample"
7017
7018 # reorder the items at var $1 to align with the items order at var $2 .
7019 # die if an item at $1 is not at $2 .
7020 reorder_by(){
7021     eval rb_in=\$$1
7022     eval rb_ordered=\$$2
7023
7024     for rb in $rb_in; do
7025         is_in $rb $rb_ordered || die "$rb at \$$1 is not at \$$2"
7026     done
7027
7028     rb_out=
7029     for rb in $rb_ordered; do
7030         is_in $rb $rb_in && rb_out="$rb_out$rb "
7031     done
7032     eval $1=\$rb_out
7033 }
7034
7035 # deps-expand fflib $1:  N x {append all expanded deps; unique}
7036 # within a set of N items, N expansions are enough to expose a cycle.
7037 expand_deps(){
7038     unique ${1}_deps  # required for the early break test.
7039     for dummy in $LIBRARY_LIST; do  # N iteratios
7040         eval deps=\$${1}_deps
7041         append ${1}_deps $(map 'eval echo \$${v}_deps' $deps)
7042         unique ${1}_deps
7043         eval '[ ${#deps} = ${#'${1}_deps'} ]' && break  # doesn't expand anymore
7044     done
7045
7046     eval is_in $1 \$${1}_deps && die "Dependency cycle at ${1}_deps"
7047     reorder_by ${1}_deps LIBRARY_LIST  # linking order is expected later
7048 }
7049
7050 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
7051 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
7052
7053 map 'expand_deps $v' $LIBRARY_LIST
7054
7055 if test "$quiet" != "yes"; then
7056
7057 echo "install prefix            $prefix"
7058 echo "source path               $source_path"
7059 echo "C compiler                $cc"
7060 echo "C library                 $libc_type"
7061 if test "$host_cc" != "$cc"; then
7062     echo "host C compiler           $host_cc"
7063     echo "host C library            $host_libc_type"
7064 fi
7065 echo "ARCH                      $arch ($cpu)"
7066 if test "$build_suffix" != ""; then
7067     echo "build suffix              $build_suffix"
7068 fi
7069 if test "$progs_suffix" != ""; then
7070     echo "progs suffix              $progs_suffix"
7071 fi
7072 if test "$extra_version" != ""; then
7073     echo "version string suffix     $extra_version"
7074 fi
7075 echo "big-endian                ${bigendian-no}"
7076 echo "runtime cpu detection     ${runtime_cpudetect-no}"
7077 if enabled x86; then
7078     echo "standalone assembly       ${x86asm-no}"
7079     echo "x86 assembler             ${x86asmexe}"
7080     echo "MMX enabled               ${mmx-no}"
7081     echo "MMXEXT enabled            ${mmxext-no}"
7082     echo "3DNow! enabled            ${amd3dnow-no}"
7083     echo "3DNow! extended enabled   ${amd3dnowext-no}"
7084     echo "SSE enabled               ${sse-no}"
7085     echo "SSSE3 enabled             ${ssse3-no}"
7086     echo "AESNI enabled             ${aesni-no}"
7087     echo "AVX enabled               ${avx-no}"
7088     echo "AVX2 enabled              ${avx2-no}"
7089     echo "AVX-512 enabled           ${avx512-no}"
7090     echo "XOP enabled               ${xop-no}"
7091     echo "FMA3 enabled              ${fma3-no}"
7092     echo "FMA4 enabled              ${fma4-no}"
7093     echo "i686 features enabled     ${i686-no}"
7094     echo "CMOV is fast              ${fast_cmov-no}"
7095     echo "EBX available             ${ebx_available-no}"
7096     echo "EBP available             ${ebp_available-no}"
7097 fi
7098 if enabled aarch64; then
7099     echo "NEON enabled              ${neon-no}"
7100     echo "VFP enabled               ${vfp-no}"
7101 fi
7102 if enabled arm; then
7103     echo "ARMv5TE enabled           ${armv5te-no}"
7104     echo "ARMv6 enabled             ${armv6-no}"
7105     echo "ARMv6T2 enabled           ${armv6t2-no}"
7106     echo "VFP enabled               ${vfp-no}"
7107     echo "NEON enabled              ${neon-no}"
7108     echo "THUMB enabled             ${thumb-no}"
7109 fi
7110 if enabled mips; then
7111     echo "MIPS FPU enabled          ${mipsfpu-no}"
7112     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
7113     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
7114     echo "MIPS MSA enabled          ${msa-no}"
7115     echo "LOONGSON MMI enabled      ${mmi-no}"
7116 fi
7117 if enabled ppc; then
7118     echo "AltiVec enabled           ${altivec-no}"
7119     echo "VSX enabled               ${vsx-no}"
7120     echo "POWER8 enabled            ${power8-no}"
7121     echo "PPC 4xx optimizations     ${ppc4xx-no}"
7122     echo "dcbzl available           ${dcbzl-no}"
7123 fi
7124 echo "debug symbols             ${debug-no}"
7125 echo "strip symbols             ${stripping-no}"
7126 echo "optimize for size         ${small-no}"
7127 echo "optimizations             ${optimizations-no}"
7128 echo "static                    ${static-no}"
7129 echo "shared                    ${shared-no}"
7130 echo "postprocessing support    ${postproc-no}"
7131 echo "network support           ${network-no}"
7132 echo "threading support         ${thread_type-no}"
7133 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
7134 echo "texi2html enabled         ${texi2html-no}"
7135 echo "perl enabled              ${perl-no}"
7136 echo "pod2man enabled           ${pod2man-no}"
7137 echo "makeinfo enabled          ${makeinfo-no}"
7138 echo "makeinfo supports HTML    ${makeinfo_html-no}"
7139 test -n "$random_seed" &&
7140     echo "random seed               ${random_seed}"
7141 echo
7142
7143 echo "External libraries:"
7144 print_enabled '' $EXTERNAL_LIBRARY_LIST $EXTERNAL_AUTODETECT_LIBRARY_LIST | print_in_columns
7145 echo
7146
7147 echo "External libraries providing hardware acceleration:"
7148 print_enabled '' $HWACCEL_LIBRARY_LIST $HWACCEL_AUTODETECT_LIBRARY_LIST | print_in_columns
7149 echo
7150
7151 echo "Libraries:"
7152 print_enabled '' $LIBRARY_LIST | print_in_columns
7153 echo
7154
7155 echo "Programs:"
7156 print_enabled '' $PROGRAM_LIST | print_in_columns
7157 echo
7158
7159 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
7160     echo "Enabled ${type}s:"
7161     eval list=\$$(toupper $type)_LIST
7162     print_enabled '_*' $list | print_in_columns
7163     echo
7164 done
7165
7166 if test -n "$ignore_tests"; then
7167     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
7168     echo "Ignored FATE tests:"
7169     echo $ignore_tests | print_in_columns
7170     echo
7171 fi
7172
7173 echo "License: $license"
7174
7175 fi # test "$quiet" != "yes"
7176
7177 if test -n "$WARN_IF_GETS_DISABLED_LIST"; then
7178     for cfg in $WARN_IF_GETS_DISABLED_LIST; do
7179         if disabled $cfg; then
7180             varname=${cfg}_disable_reason
7181             eval "warn \"Disabled $cfg because \$$varname\""
7182         fi
7183     done
7184 fi
7185
7186 if test -n "$WARNINGS"; then
7187     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
7188     enabled fatal_warnings && exit 1
7189 fi
7190
7191 test -e Makefile || echo "include $source_path/Makefile" > Makefile
7192
7193 esc(){
7194     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
7195 }
7196
7197 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
7198
7199 enabled stripping || strip="echo skipping strip"
7200 enabled stripping || striptype=""
7201
7202 config_files="$TMPH ffbuild/config.mak doc/config.texi"
7203
7204 cat > ffbuild/config.mak <<EOF
7205 # Automatically generated by configure - do not modify!
7206 ifndef FFMPEG_CONFIG_MAK
7207 FFMPEG_CONFIG_MAK=1
7208 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
7209 prefix=$prefix
7210 LIBDIR=\$(DESTDIR)$libdir
7211 SHLIBDIR=\$(DESTDIR)$shlibdir
7212 INCDIR=\$(DESTDIR)$incdir
7213 BINDIR=\$(DESTDIR)$bindir
7214 DATADIR=\$(DESTDIR)$datadir
7215 DOCDIR=\$(DESTDIR)$docdir
7216 MANDIR=\$(DESTDIR)$mandir
7217 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
7218 INSTALL_NAME_DIR=$install_name_dir
7219 SRC_PATH=$source_path
7220 SRC_LINK=$source_link
7221 ifndef MAIN_MAKEFILE
7222 SRC_PATH:=\$(SRC_PATH:.%=..%)
7223 endif
7224 CC_IDENT=$cc_ident
7225 ARCH=$arch
7226 INTRINSICS=$intrinsics
7227 EXTERN_PREFIX=$extern_prefix
7228 CC=$cc
7229 CXX=$cxx
7230 AS=$as
7231 OBJCC=$objcc
7232 LD=$ld
7233 DEPCC=$dep_cc
7234 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
7235 DEPAS=$as
7236 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
7237 X86ASM=$x86asmexe
7238 DEPX86ASM=$x86asmexe
7239 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
7240 AR=$ar
7241 ARFLAGS=$arflags
7242 AR_O=$ar_o
7243 AR_CMD=$ar
7244 NM_CMD=$nm
7245 RANLIB=$ranlib
7246 STRIP=$strip
7247 STRIPTYPE=$striptype
7248 NVCC=$nvcc
7249 CP=cp -p
7250 LN_S=$ln_s
7251 CPPFLAGS=$CPPFLAGS
7252 CFLAGS=$CFLAGS
7253 CXXFLAGS=$CXXFLAGS
7254 OBJCFLAGS=$OBJCFLAGS
7255 ASFLAGS=$ASFLAGS
7256 NVCCFLAGS=$nvccflags
7257 AS_C=$AS_C
7258 AS_O=$AS_O
7259 OBJCC_C=$OBJCC_C
7260 OBJCC_E=$OBJCC_E
7261 OBJCC_O=$OBJCC_O
7262 CC_C=$CC_C
7263 CC_E=$CC_E
7264 CC_O=$CC_O
7265 CXX_C=$CXX_C
7266 CXX_O=$CXX_O
7267 NVCC_C=$NVCC_C
7268 NVCC_O=$NVCC_O
7269 LD_O=$LD_O
7270 X86ASM_O=$X86ASM_O
7271 LD_LIB=$LD_LIB
7272 LD_PATH=$LD_PATH
7273 DLLTOOL=$dlltool
7274 WINDRES=$windres
7275 DEPWINDRES=$dep_cc
7276 DOXYGEN=$doxygen
7277 LDFLAGS=$LDFLAGS
7278 LDEXEFLAGS=$LDEXEFLAGS
7279 LDSOFLAGS=$LDSOFLAGS
7280 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
7281 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
7282 X86ASMFLAGS=$X86ASMFLAGS
7283 BUILDSUF=$build_suffix
7284 PROGSSUF=$progs_suffix
7285 FULLNAME=$FULLNAME
7286 LIBPREF=$LIBPREF
7287 LIBSUF=$LIBSUF
7288 LIBNAME=$LIBNAME
7289 SLIBPREF=$SLIBPREF
7290 SLIBSUF=$SLIBSUF
7291 EXESUF=$EXESUF
7292 EXTRA_VERSION=$extra_version
7293 CCDEP=$CCDEP
7294 CXXDEP=$CXXDEP
7295 CCDEP_FLAGS=$CCDEP_FLAGS
7296 ASDEP=$ASDEP
7297 ASDEP_FLAGS=$ASDEP_FLAGS
7298 X86ASMDEP=$X86ASMDEP
7299 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
7300 CC_DEPFLAGS=$CC_DEPFLAGS
7301 AS_DEPFLAGS=$AS_DEPFLAGS
7302 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
7303 HOSTCC=$host_cc
7304 HOSTLD=$host_ld
7305 HOSTCFLAGS=$host_cflags
7306 HOSTCPPFLAGS=$host_cppflags
7307 HOSTEXESUF=$HOSTEXESUF
7308 HOSTLDFLAGS=$host_ldflags
7309 HOSTEXTRALIBS=$host_extralibs
7310 DEPHOSTCC=$host_cc
7311 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
7312 HOSTCCDEP=$HOSTCCDEP
7313 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
7314 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
7315 HOSTCC_C=$HOSTCC_C
7316 HOSTCC_O=$HOSTCC_O
7317 HOSTLD_O=$HOSTLD_O
7318 TARGET_EXEC=$target_exec $target_exec_args
7319 TARGET_PATH=$target_path
7320 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
7321 CFLAGS-ffplay=${sdl2_cflags}
7322 CFLAGS_HEADERS=$CFLAGS_HEADERS
7323 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
7324 EXTRALIBS=$extralibs
7325 COMPAT_OBJS=$compat_objs
7326 INSTALL=$install
7327 LIBTARGET=${LIBTARGET}
7328 SLIBNAME=${SLIBNAME}
7329 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
7330 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
7331 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
7332 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
7333 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
7334 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
7335 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
7336 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
7337 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
7338 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
7339 NOREDZONE_FLAGS=$noredzone_flags
7340 LIBFUZZER_PATH=$libfuzzer_path
7341 IGNORE_TESTS=$ignore_tests
7342 EOF
7343
7344 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
7345
7346 for entry in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
7347     eval echo "EXTRALIBS-${entry}=\$${entry}_extralibs" >> ffbuild/config.mak
7348 done
7349
7350 cat > $TMPH <<EOF
7351 /* Automatically generated by configure - do not modify! */
7352 #ifndef FFMPEG_CONFIG_H
7353 #define FFMPEG_CONFIG_H
7354 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
7355 #define FFMPEG_LICENSE "$(c_escape $license)"
7356 #define CONFIG_THIS_YEAR 2019
7357 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
7358 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
7359 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
7360 #define av_restrict $restrict_keyword
7361 #define EXTERN_PREFIX "${extern_prefix}"
7362 #define EXTERN_ASM ${extern_prefix}
7363 #define BUILDSUF "$build_suffix"
7364 #define SLIBSUF "$SLIBSUF"
7365 #define HAVE_MMX2 HAVE_MMXEXT
7366 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
7367 EOF
7368
7369 test -n "$assert_level" &&
7370     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
7371
7372 test -n "$malloc_prefix" &&
7373     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
7374
7375 if enabled x86asm; then
7376     append config_files $TMPASM
7377     cat > $TMPASM <<EOF
7378 ; Automatically generated by configure - do not modify!
7379 EOF
7380 fi
7381
7382 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
7383
7384
7385 mkdir -p doc
7386 mkdir -p tests
7387 mkdir -p tests/api
7388 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
7389
7390 print_config ARCH_   "$config_files" $ARCH_LIST
7391 print_config HAVE_   "$config_files" $HAVE_LIST
7392 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
7393                                      $CONFIG_EXTRA      \
7394                                      $ALL_COMPONENTS    \
7395
7396 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
7397 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
7398
7399 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
7400 cp_if_changed $TMPH config.h
7401 touch ffbuild/.config
7402
7403 enabled x86asm && cp_if_changed $TMPASM config.asm
7404
7405 cat > $TMPH <<EOF
7406 /* Generated by ffmpeg configure */
7407 #ifndef AVUTIL_AVCONFIG_H
7408 #define AVUTIL_AVCONFIG_H
7409 EOF
7410
7411 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
7412
7413 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
7414
7415 cp_if_changed $TMPH libavutil/avconfig.h
7416
7417 # full_filter_name_foo=vf_foo
7418 # full_filter_name_bar=asrc_bar
7419 # ...
7420 eval "$(sed -n "s/^extern AVFilter ff_\([avfsinkrc]\{2,5\}\)_\(.*\);/full_filter_name_\2=\1_\2/p" $source_path/libavfilter/allfilters.c)"
7421
7422 # generate the lists of enabled components
7423 print_enabled_components(){
7424     file=$1
7425     struct_name=$2
7426     name=$3
7427     shift 3
7428     echo "static const $struct_name * const $name[] = {" > $TMPH
7429     for c in $*; do
7430         if enabled $c; then
7431             case $name in
7432                 filter_list)
7433                     eval c=\$full_filter_name_${c%_filter}
7434                 ;;
7435                 indev_list)
7436                     c=${c%_indev}_demuxer
7437                 ;;
7438                 outdev_list)
7439                     c=${c%_outdev}_muxer
7440                 ;;
7441             esac
7442             printf "    &ff_%s,\n" $c >> $TMPH
7443         fi
7444     done
7445     if [ "$name" = "filter_list" ]; then
7446         for c in asrc_abuffer vsrc_buffer asink_abuffer vsink_buffer; do
7447             printf "    &ff_%s,\n" $c >> $TMPH
7448         done
7449     fi
7450     echo "    NULL };" >> $TMPH
7451     cp_if_changed $TMPH $file
7452 }
7453
7454 print_enabled_components libavfilter/filter_list.c AVFilter filter_list $FILTER_LIST
7455 print_enabled_components libavcodec/codec_list.c AVCodec codec_list $CODEC_LIST
7456 print_enabled_components libavcodec/parser_list.c AVCodecParser parser_list $PARSER_LIST
7457 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
7458 print_enabled_components libavformat/demuxer_list.c AVInputFormat demuxer_list $DEMUXER_LIST
7459 print_enabled_components libavformat/muxer_list.c AVOutputFormat muxer_list $MUXER_LIST
7460 print_enabled_components libavdevice/indev_list.c AVInputFormat indev_list $INDEV_LIST
7461 print_enabled_components libavdevice/outdev_list.c AVOutputFormat outdev_list $OUTDEV_LIST
7462 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
7463
7464 # Settings for pkg-config files
7465
7466 cat > $TMPH <<EOF
7467 # Automatically generated by configure - do not modify!
7468 shared=$shared
7469 build_suffix=$build_suffix
7470 prefix=$prefix
7471 libdir=$libdir
7472 incdir=$incdir
7473 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
7474 source_path=${source_path}
7475 LIBPREF=${LIBPREF}
7476 LIBSUF=${LIBSUF}
7477 extralibs_avutil="$avutil_extralibs"
7478 extralibs_avcodec="$avcodec_extralibs"
7479 extralibs_avformat="$avformat_extralibs"
7480 extralibs_avdevice="$avdevice_extralibs"
7481 extralibs_avfilter="$avfilter_extralibs"
7482 extralibs_avresample="$avresample_extralibs"
7483 extralibs_postproc="$postproc_extralibs"
7484 extralibs_swscale="$swscale_extralibs"
7485 extralibs_swresample="$swresample_extralibs"
7486 EOF
7487
7488 for lib in $LIBRARY_LIST; do
7489     lib_deps="$(eval echo \$${lib}_deps)"
7490     echo ${lib}_deps=\"$lib_deps\" >> $TMPH
7491 done
7492
7493 cp_if_changed $TMPH ffbuild/config.sh