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-cuda-llvm      disable CUDA compilation using clang [autodetect]
 326   --disable-cuvid          disable Nvidia CUVID support [autodetect]
 327   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
 328   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
 329   --disable-ffnvcodec      disable dynamically linked Nvidia code [autodetect]
 330   --enable-libdrm          enable DRM code (Linux) [no]
 331   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
 332   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
 333   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
 334   --disable-nvdec          disable Nvidia video decoding acceleration (via hwaccel) [autodetect]
 335   --disable-nvenc          disable Nvidia video encoding code [autodetect]
 336   --enable-omx             enable OpenMAX IL code [no]
 337   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
 338   --enable-rkmpp           enable Rockchip Media Process Platform code [no]
 339   --disable-v4l2-m2m       disable V4L2 mem2mem code [autodetect]
 340   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
 341   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
 342   --disable-videotoolbox   disable VideoToolbox code [autodetect]
 343
 344 Toolchain options:
 345   --arch=ARCH              select architecture [$arch]
 346   --cpu=CPU                select the minimum required CPU (affects
 347                            instruction selection, may crash on older CPUs)
 348   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 349   --progs-suffix=SUFFIX    program name suffix []
 350   --enable-cross-compile   assume a cross-compiler is used
 351   --sysroot=PATH           root of cross-build tree
 352   --sysinclude=PATH        location of cross-build system headers
 353   --target-os=OS           compiler targets OS [$target_os]
 354   --target-exec=CMD        command to run executables on target
 355   --target-path=DIR        path to view of build directory on target
 356   --target-samples=DIR     path to samples directory on target
 357   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 358   --toolchain=NAME         set tool defaults according to NAME
 359                            (gcc-asan, clang-asan, gcc-msan, clang-msan,
 360                            gcc-tsan, clang-tsan, gcc-usan, clang-usan,
 361                            valgrind-massif, valgrind-memcheck,
 362                            msvc, icl, gcov, llvm-cov, hardened)
 363   --nm=NM                  use nm tool NM [$nm_default]
 364   --ar=AR                  use archive tool AR [$ar_default]
 365   --as=AS                  use assembler AS [$as_default]
 366   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
 367   --strip=STRIP            use strip tool STRIP [$strip_default]
 368   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 369   --x86asmexe=EXE          use nasm-compatible assembler EXE [$x86asmexe_default]
 370   --cc=CC                  use C compiler CC [$cc_default]
 371   --cxx=CXX                use C compiler CXX [$cxx_default]
 372   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 373   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 374   --nvcc=NVCC              use Nvidia CUDA compiler NVCC or clang [$nvcc_default]
 375   --ld=LD                  use linker LD [$ld_default]
 376   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 377   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 378   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 379   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 380   --host-cc=HOSTCC         use host C compiler HOSTCC
 381   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 382   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 383   --host-ld=HOSTLD         use host linker HOSTLD
 384   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 385   --host-extralibs=HLIBS   use libs HLIBS when linking for host
 386   --host-os=OS             compiler host OS [$target_os]
 387   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 388   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 389   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 390   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 391   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 392   --extra-ldsoflags=ELDFLAGS add ELDFLAGS to LDSOFLAGS [$LDSOFLAGS]
 393   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 394   --extra-version=STRING   version string suffix []
 395   --optflags=OPTFLAGS      override optimization-related compiler flags
 396   --nvccflags=NVCCFLAGS    override nvcc flags [$nvccflags_default]
 397   --build-suffix=SUFFIX    library name suffix []
 398   --enable-pic             build position-independent code
 399   --enable-thumb           compile for Thumb instruction set
 400   --enable-lto             use link-time optimization
 401   --env="ENV=override"     override the environment variables
 402
 403 Advanced options (experts only):
 404   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 405   --custom-allocator=NAME  use a supported custom allocator
 406   --disable-symver         disable symbol versioning
 407   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 408   --disable-safe-bitstream-reader
 409                            disable buffer boundary checking in bitreaders
 410                            (faster, but may crash)
 411   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 412
 413 Optimization options (experts only):
 414   --disable-asm            disable all assembly optimizations
 415   --disable-altivec        disable AltiVec optimizations
 416   --disable-vsx            disable VSX optimizations
 417   --disable-power8         disable POWER8 optimizations
 418   --disable-amd3dnow       disable 3DNow! optimizations
 419   --disable-amd3dnowext    disable 3DNow! extended optimizations
 420   --disable-mmx            disable MMX optimizations
 421   --disable-mmxext         disable MMXEXT optimizations
 422   --disable-sse            disable SSE optimizations
 423   --disable-sse2           disable SSE2 optimizations
 424   --disable-sse3           disable SSE3 optimizations
 425   --disable-ssse3          disable SSSE3 optimizations
 426   --disable-sse4           disable SSE4 optimizations
 427   --disable-sse42          disable SSE4.2 optimizations
 428   --disable-avx            disable AVX optimizations
 429   --disable-xop            disable XOP optimizations
 430   --disable-fma3           disable FMA3 optimizations
 431   --disable-fma4           disable FMA4 optimizations
 432   --disable-avx2           disable AVX2 optimizations
 433   --disable-avx512         disable AVX-512 optimizations
 434   --disable-aesni          disable AESNI optimizations
 435   --disable-armv5te        disable armv5te optimizations
 436   --disable-armv6          disable armv6 optimizations
 437   --disable-armv6t2        disable armv6t2 optimizations
 438   --disable-vfp            disable VFP optimizations
 439   --disable-neon           disable NEON optimizations
 440   --disable-inline-asm     disable use of inline assembly
 441   --disable-x86asm         disable use of standalone x86 assembly
 442   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
 443   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 444   --disable-msa            disable MSA optimizations
 445   --disable-msa2           disable MSA2 optimizations
 446   --disable-mipsfpu        disable floating point MIPS optimizations
 447   --disable-mmi            disable Loongson SIMD optimizations
 448   --disable-fast-unaligned consider unaligned accesses slow
 449
 450 Developer options (useful when working on FFmpeg itself):
 451   --disable-debug          disable debugging symbols
 452   --enable-debug=LEVEL     set the debug level [$debuglevel]
 453   --disable-optimizations  disable compiler optimizations
 454   --enable-extra-warnings  enable more compiler warnings
 455   --disable-stripping      disable stripping of executables and shared libraries
 456   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 457                            2 causes a slowdown at runtime.
 458   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 459   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 460                            leaks and errors, using the specified valgrind binary.
 461                            Cannot be combined with --target-exec
 462   --enable-ftrapv          Trap arithmetic overflows
 463   --samples=PATH           location of test samples for FATE, if not set use
 464                            \$FATE_SAMPLES at make invocation time.
 465   --enable-neon-clobber-test check NEON registers for clobbering (should be
 466                            used only for debugging purposes)
 467   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 468                            should be used only for debugging purposes)
 469   --enable-random          randomly enable/disable components
 470   --disable-random
 471   --enable-random=LIST     randomly enable/disable specific components or
 472   --disable-random=LIST    component groups. LIST is a comma-separated list
 473                            of NAME[:PROB] entries where NAME is a component
 474                            (group) and PROB the probability associated with
 475                            NAME (default 0.5).
 476   --random-seed=VALUE      seed value for --enable/disable-random
 477   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 478                            (only applies to --disable-optimizations builds)
 479   --enable-ossfuzz         Enable building fuzzer tool
 480   --libfuzzer=PATH         path to libfuzzer
 481   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
 482                            in the name) of tests whose result is ignored
 483   --enable-linux-perf      enable Linux Performance Monitor API
 484
 485 NOTE: Object files are built at the place where configure is launched.
 486 EOF
 487   exit 0
 488 }
 489
 490 if test -t 1 && which tput >/dev/null 2>&1; then
 491     ncolors=$(tput colors)
 492     if test -n "$ncolors" && test $ncolors -ge 8; then
 493         bold_color=$(tput bold)
 494         warn_color=$(tput setaf 3)
 495         error_color=$(tput setaf 1)
 496         reset_color=$(tput sgr0)
 497     fi
 498     # 72 used instead of 80 since that's the default of pr
 499     ncols=$(tput cols)
 500 fi
 501 : ${ncols:=72}
 502
 503 log(){
 504     echo "$@" >> $logfile
 505 }
 506
 507 log_file(){
 508     log BEGIN "$1"
 509     log_file_i=1
 510     while IFS= read -r log_file_line; do
 511         printf '%5d\t%s\n' "$log_file_i" "$log_file_line"
 512         log_file_i=$(($log_file_i+1))
 513     done < "$1" >> "$logfile"
 514     log END "$1"
 515 }
 516
 517 warn(){
 518     log "WARNING: $*"
 519     WARNINGS="${WARNINGS}WARNING: $*\n"
 520 }
 521
 522 die(){
 523     log "$@"
 524     echo "$error_color$bold_color$@$reset_color"
 525     cat <<EOF
 526
 527 If you think configure made a mistake, make sure you are using the latest
 528 version from Git.  If the latest version fails, report the problem to the
 529 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 530 EOF
 531     if disabled logging; then
 532         cat <<EOF
 533 Rerun configure with logging enabled (do not use --disable-logging), and
 534 include the log this produces with your report.
 535 EOF
 536     else
 537         cat <<EOF
 538 Include the log file "$logfile" produced by configure as this will help
 539 solve the problem.
 540 EOF
 541     fi
 542     exit 1
 543 }
 544
 545 # Avoid locale weirdness, besides we really just want to translate ASCII.
 546 toupper(){
 547     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 548 }
 549
 550 tolower(){
 551     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 552 }
 553
 554 c_escape(){
 555     echo "$*" | sed 's/["\\]/\\\0/g'
 556 }
 557
 558 sh_quote(){
 559     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 560     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 561     echo "$v"
 562 }
 563
 564 cleanws(){
 565     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 566 }
 567
 568 filter(){
 569     pat=$1
 570     shift
 571     for v; do
 572         eval "case '$v' in $pat) printf '%s ' '$v' ;; esac"
 573     done
 574 }
 575
 576 filter_out(){
 577     pat=$1
 578     shift
 579     for v; do
 580         eval "case '$v' in $pat) ;; *) printf '%s ' '$v' ;; esac"
 581     done
 582 }
 583
 584 map(){
 585     m=$1
 586     shift
 587     for v; do eval $m; done
 588 }
 589
 590 add_suffix(){
 591     suffix=$1
 592     shift
 593     for v; do echo ${v}${suffix}; done
 594 }
 595
 596 remove_suffix(){
 597     suffix=$1
 598     shift
 599     for v; do echo ${v%$suffix}; done
 600 }
 601
 602 set_all(){
 603     value=$1
 604     shift
 605     for var in $*; do
 606         eval $var=$value
 607     done
 608 }
 609
 610 set_weak(){
 611     value=$1
 612     shift
 613     for var; do
 614         eval : \${$var:=$value}
 615     done
 616 }
 617
 618 sanitize_var_name(){
 619     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 620 }
 621
 622 set_sanitized(){
 623     var=$1
 624     shift
 625     eval $(sanitize_var_name "$var")='$*'
 626 }
 627
 628 get_sanitized(){
 629     eval echo \$$(sanitize_var_name "$1")
 630 }
 631
 632 pushvar(){
 633     for pvar in $*; do
 634         eval level=\${${pvar}_level:=0}
 635         eval ${pvar}_${level}="\$$pvar"
 636         eval ${pvar}_level=$(($level+1))
 637     done
 638 }
 639
 640 popvar(){
 641     for pvar in $*; do
 642         eval level=\${${pvar}_level:-0}
 643         test $level = 0 && continue
 644         eval level=$(($level-1))
 645         eval $pvar="\${${pvar}_${level}}"
 646         eval ${pvar}_level=$level
 647         eval unset ${pvar}_${level}
 648     done
 649 }
 650
 651 request(){
 652     for var in $*; do
 653         eval ${var}_requested=yes
 654         eval $var=
 655     done
 656 }
 657
 658 warn_if_gets_disabled(){
 659     for var in $*; do
 660         WARN_IF_GETS_DISABLED_LIST="$WARN_IF_GETS_DISABLED_LIST $var"
 661     done
 662 }
 663
 664 enable(){
 665     set_all yes $*
 666 }
 667
 668 disable(){
 669     set_all no $*
 670 }
 671
 672 disable_with_reason(){
 673     disable $1
 674     eval "${1}_disable_reason=\"$2\""
 675     if requested $1; then
 676         die "ERROR: $1 requested, but $2"
 677     fi
 678 }
 679
 680 enable_weak(){
 681     set_weak yes $*
 682 }
 683
 684 disable_weak(){
 685     set_weak no $*
 686 }
 687
 688 enable_sanitized(){
 689     for var; do
 690         enable $(sanitize_var_name $var)
 691     done
 692 }
 693
 694 disable_sanitized(){
 695     for var; do
 696         disable $(sanitize_var_name $var)
 697     done
 698 }
 699
 700 do_enable_deep(){
 701     for var; do
 702         enabled $var && continue
 703         set -- $var
 704         eval enable_deep \$${var}_select
 705         var=$1
 706         eval enable_deep_weak \$${var}_suggest
 707     done
 708 }
 709
 710 enable_deep(){
 711     do_enable_deep $*
 712     enable $*
 713 }
 714
 715 enable_deep_weak(){
 716     for var; do
 717         disabled $var && continue
 718         set -- $var
 719         do_enable_deep $var
 720         var=$1
 721         enable_weak $var
 722     done
 723 }
 724
 725 requested(){
 726     test "${1#!}" = "$1" && op="=" || op="!="
 727     eval test "x\$${1#!}_requested" $op "xyes"
 728 }
 729
 730 enabled(){
 731     test "${1#!}" = "$1" && op="=" || op="!="
 732     eval test "x\$${1#!}" $op "xyes"
 733 }
 734
 735 disabled(){
 736     test "${1#!}" = "$1" && op="=" || op="!="
 737     eval test "x\$${1#!}" $op "xno"
 738 }
 739
 740 enabled_all(){
 741     for opt; do
 742         enabled $opt || return 1
 743     done
 744 }
 745
 746 disabled_all(){
 747     for opt; do
 748         disabled $opt || return 1
 749     done
 750 }
 751
 752 enabled_any(){
 753     for opt; do
 754         enabled $opt && return 0
 755     done
 756 }
 757
 758 disabled_any(){
 759     for opt; do
 760         disabled $opt && return 0
 761     done
 762     return 1
 763 }
 764
 765 set_default(){
 766     for opt; do
 767         eval : \${$opt:=\$${opt}_default}
 768     done
 769 }
 770
 771 is_in(){
 772     value=$1
 773     shift
 774     for var in $*; do
 775         [ $var = $value ] && return 0
 776     done
 777     return 1
 778 }
 779
 780 # The cfg loop is very hot (several thousands iterations), and in bash also
 781 # potentialy quite slow. Try to abort the iterations early, preferably without
 782 # calling functions. 70%+ of the time cfg is already done or without deps.
 783 check_deps(){
 784     for cfg; do
 785         eval [ x\$${cfg}_checking = xdone ] && continue
 786         eval [ x\$${cfg}_checking = xinprogress ] && die "Circular dependency for $cfg."
 787
 788         eval "
 789         dep_all=\$${cfg}_deps
 790         dep_any=\$${cfg}_deps_any
 791         dep_con=\$${cfg}_conflict
 792         dep_sel=\$${cfg}_select
 793         dep_sgs=\$${cfg}_suggest
 794         dep_ifa=\$${cfg}_if
 795         dep_ifn=\$${cfg}_if_any
 796         "
 797
 798         # most of the time here $cfg has no deps - avoid costly no-op work
 799         if [ "$dep_all$dep_any$dep_con$dep_sel$dep_sgs$dep_ifa$dep_ifn" ]; then
 800             eval ${cfg}_checking=inprogress
 801
 802             set -- $cfg "$dep_all" "$dep_any" "$dep_con" "$dep_sel" "$dep_sgs" "$dep_ifa" "$dep_ifn"
 803             check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
 804             cfg=$1; dep_all=$2; dep_any=$3; dep_con=$4; dep_sel=$5 dep_sgs=$6; dep_ifa=$7; dep_ifn=$8
 805
 806             [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 807             [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 808             enabled_all  $dep_all || { disable_with_reason $cfg "not all dependencies are satisfied: $dep_all"; }
 809             enabled_any  $dep_any || { disable_with_reason $cfg "not any dependency is satisfied: $dep_any"; }
 810             disabled_all $dep_con || { disable_with_reason $cfg "some conflicting dependencies are unsatisfied: $dep_con"; }
 811             disabled_any $dep_sel && { disable_with_reason $cfg "some selected dependency is unsatisfied: $dep_sel"; }
 812
 813             enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
 814
 815             for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
 816                 # filter out library deps, these do not belong in extralibs
 817                 is_in $dep $LIBRARY_LIST && continue
 818                 enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
 819             done
 820         fi
 821
 822         eval ${cfg}_checking=done
 823     done
 824 }
 825
 826 print_config(){
 827     pfx=$1
 828     files=$2
 829     shift 2
 830     map 'eval echo "$v \${$v:-no}"' "$@" |
 831     awk "BEGIN { split(\"$files\", files) }
 832         {
 833             c = \"$pfx\" toupper(\$1);
 834             v = \$2;
 835             sub(/yes/, 1, v);
 836             sub(/no/,  0, v);
 837             for (f in files) {
 838                 file = files[f];
 839                 if (file ~ /\\.h\$/) {
 840                     printf(\"#define %s %d\\n\", c, v) >>file;
 841                 } else if (file ~ /\\.asm\$/) {
 842                     printf(\"%%define %s %d\\n\", c, v) >>file;
 843                 } else if (file ~ /\\.mak\$/) {
 844                     n = -v ? \"\" : \"!\";
 845                     printf(\"%s%s=yes\\n\", n, c) >>file;
 846                 } else if (file ~ /\\.texi\$/) {
 847                     pre = -v ? \"\" : \"@c \";
 848                     yesno = \$2;
 849                     c2 = tolower(c);
 850                     gsub(/_/, \"-\", c2);
 851                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 852                 }
 853             }
 854         }"
 855 }
 856
 857 print_enabled(){
 858     suf=$1
 859     shift
 860     for v; do
 861         enabled $v && printf "%s\n" ${v%$suf}
 862     done
 863 }
 864
 865 append(){
 866     var=$1
 867     shift
 868     eval "$var=\"\$$var $*\""
 869 }
 870
 871 prepend(){
 872     var=$1
 873     shift
 874     eval "$var=\"$* \$$var\""
 875 }
 876
 877 reverse () {
 878     eval '
 879         reverse_out=
 880         for v in $'$1'; do
 881             reverse_out="$v $reverse_out"
 882         done
 883         '$1'=$reverse_out
 884     '
 885 }
 886
 887 # keeps the last occurence of each non-unique item
 888 unique(){
 889     unique_out=
 890     eval unique_in=\$$1
 891     reverse unique_in
 892     for v in $unique_in; do
 893         # " $unique_out" +space such that every item is surrounded with spaces
 894         case " $unique_out" in *" $v "*) continue; esac  # already in list
 895         unique_out="$unique_out$v "
 896     done
 897     reverse unique_out
 898     eval $1=\$unique_out
 899 }
 900
 901 resolve(){
 902     resolve_out=
 903     eval resolve_in=\$$1
 904     for v in $resolve_in; do
 905         eval 'resolve_out="$resolve_out$'$v' "'
 906     done
 907     eval $1=\$resolve_out
 908 }
 909
 910 add_cppflags(){
 911     append CPPFLAGS "$@"
 912 }
 913
 914 add_cflags(){
 915     append CFLAGS $($cflags_filter "$@")
 916 }
 917
 918 add_cflags_headers(){
 919     append CFLAGS_HEADERS $($cflags_filter "$@")
 920 }
 921
 922 add_cxxflags(){
 923     append CXXFLAGS $($cflags_filter "$@")
 924 }
 925
 926 add_objcflags(){
 927     append OBJCFLAGS $($objcflags_filter "$@")
 928 }
 929
 930 add_asflags(){
 931     append ASFLAGS $($asflags_filter "$@")
 932 }
 933
 934 add_ldflags(){
 935     append LDFLAGS $($ldflags_filter "$@")
 936 }
 937
 938 add_ldexeflags(){
 939     append LDEXEFLAGS $($ldflags_filter "$@")
 940 }
 941
 942 add_ldsoflags(){
 943     append LDSOFLAGS $($ldflags_filter "$@")
 944 }
 945
 946 add_extralibs(){
 947     prepend extralibs $($ldflags_filter "$@")
 948 }
 949
 950 add_stripflags(){
 951     append ASMSTRIPFLAGS "$@"
 952 }
 953
 954 add_host_cppflags(){
 955     append host_cppflags "$@"
 956 }
 957
 958 add_host_cflags(){
 959     append host_cflags $($host_cflags_filter "$@")
 960 }
 961
 962 add_host_ldflags(){
 963     append host_ldflags $($host_ldflags_filter "$@")
 964 }
 965
 966 add_compat(){
 967     append compat_objs $1
 968     shift
 969     map 'add_cppflags -D$v' "$@"
 970 }
 971
 972 test_cmd(){
 973     log "$@"
 974     "$@" >> $logfile 2>&1
 975 }
 976
 977 test_stat(){
 978     log test_stat "$@"
 979     stat "$1" >> $logfile 2>&1
 980 }
 981
 982 cc_e(){
 983     eval printf '%s\\n' $CC_E
 984 }
 985
 986 cc_o(){
 987     eval printf '%s\\n' $CC_O
 988 }
 989
 990 as_o(){
 991     eval printf '%s\\n' $AS_O
 992 }
 993
 994 x86asm_o(){
 995     eval printf '%s\\n' $X86ASM_O
 996 }
 997
 998 ld_o(){
 999     eval printf '%s\\n' $LD_O
1000 }
1001
1002 hostcc_e(){
1003     eval printf '%s\\n' $HOSTCC_E
1004 }
1005
1006 hostcc_o(){
1007     eval printf '%s\\n' $HOSTCC_O
1008 }
1009
1010 nvcc_o(){
1011     eval printf '%s\\n' $NVCC_O
1012 }
1013
1014 test_cc(){
1015     log test_cc "$@"
1016     cat > $TMPC
1017     log_file $TMPC
1018     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
1019 }
1020
1021 test_cxx(){
1022     log test_cxx "$@"
1023     cat > $TMPCPP
1024     log_file $TMPCPP
1025     test_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
1026 }
1027
1028 test_objcc(){
1029     log test_objcc "$@"
1030     cat > $TMPM
1031     log_file $TMPM
1032     test_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
1033 }
1034
1035 test_nvcc(){
1036     log test_nvcc "$@"
1037     cat > $TMPCU
1038     log_file $TMPCU
1039     tmpcu_=$TMPCU
1040     tmpo_=$TMPO
1041     [ -x "$(command -v cygpath)" ] && tmpcu_=$(cygpath -m $tmpcu_) && tmpo_=$(cygpath -m $tmpo_)
1042     test_cmd $nvcc $nvccflags "$@" $NVCC_C $(nvcc_o $tmpo_) $tmpcu_
1043 }
1044
1045 check_nvcc() {
1046     log check_nvcc "$@"
1047     name=$1
1048     shift 1
1049     disabled $name && return
1050     disable $name
1051     test_nvcc "$@" <<EOF && enable $name
1052 extern "C" {
1053     __global__ void hello(unsigned char *data) {}
1054 }
1055 EOF
1056 }
1057
1058 test_cpp(){
1059     log test_cpp "$@"
1060     cat > $TMPC
1061     log_file $TMPC
1062     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
1063 }
1064
1065 test_as(){
1066     log test_as "$@"
1067     cat > $TMPS
1068     log_file $TMPS
1069     test_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
1070 }
1071
1072 test_x86asm(){
1073     log test_x86asm "$@"
1074     echo "$1" > $TMPASM
1075     log_file $TMPASM
1076     shift
1077     test_cmd $x86asmexe $X86ASMFLAGS -Werror "$@" $(x86asm_o $TMPO) $TMPASM
1078 }
1079
1080 check_cmd(){
1081     log check_cmd "$@"
1082     cmd=$1
1083     disabled $cmd && return
1084     disable $cmd
1085     test_cmd $@ && enable $cmd
1086 }
1087
1088 check_as(){
1089     log check_as "$@"
1090     name=$1
1091     code=$2
1092     shift 2
1093     disable $name
1094     test_as $@ <<EOF && enable $name
1095 $code
1096 EOF
1097 }
1098
1099 check_inline_asm(){
1100     log check_inline_asm "$@"
1101     name="$1"
1102     code="$2"
1103     shift 2
1104     disable $name
1105     test_cc "$@" <<EOF && enable $name
1106 void foo(void){ __asm__ volatile($code); }
1107 EOF
1108 }
1109
1110 check_inline_asm_flags(){
1111     log check_inline_asm_flags "$@"
1112     name="$1"
1113     code="$2"
1114     flags=''
1115     shift 2
1116     while [ "$1" != "" ]; do
1117       append flags $1
1118       shift
1119     done;
1120     disable $name
1121     cat > $TMPC <<EOF
1122 void foo(void){ __asm__ volatile($code); }
1123 EOF
1124     log_file $TMPC
1125     test_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
1126     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
1127 }
1128
1129 check_insn(){
1130     log check_insn "$@"
1131     check_inline_asm ${1}_inline "\"$2\""
1132     check_as ${1}_external "$2"
1133 }
1134
1135 check_x86asm(){
1136     log check_x86asm "$@"
1137     name=$1
1138     shift
1139     disable $name
1140     test_x86asm "$@" && enable $name
1141 }
1142
1143 test_ld(){
1144     log test_ld "$@"
1145     type=$1
1146     shift 1
1147     flags=$(filter_out '-l*|*.so' $@)
1148     libs=$(filter '-l*|*.so' $@)
1149     test_$type $($cflags_filter $flags) || return
1150     flags=$($ldflags_filter $flags)
1151     libs=$($ldflags_filter $libs)
1152     test_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1153 }
1154
1155 check_ld(){
1156     log check_ld "$@"
1157     type=$1
1158     name=$2
1159     shift 2
1160     disable $name
1161     test_ld $type $@ && enable $name
1162 }
1163
1164 print_include(){
1165     hdr=$1
1166     test "${hdr%.h}" = "${hdr}" &&
1167         echo "#include $hdr"    ||
1168         echo "#include <$hdr>"
1169 }
1170
1171 test_code(){
1172     log test_code "$@"
1173     check=$1
1174     headers=$2
1175     code=$3
1176     shift 3
1177     {
1178         for hdr in $headers; do
1179             print_include $hdr
1180         done
1181         echo "int main(void) { $code; return 0; }"
1182     } | test_$check "$@"
1183 }
1184
1185 check_cppflags(){
1186     log check_cppflags "$@"
1187     test_cpp "$@" <<EOF && append CPPFLAGS "$@"
1188 #include <stdlib.h>
1189 EOF
1190 }
1191
1192 test_cflags(){
1193     log test_cflags "$@"
1194     set -- $($cflags_filter "$@")
1195     test_cc "$@" <<EOF
1196 int x;
1197 EOF
1198 }
1199
1200 check_cflags(){
1201     log check_cflags "$@"
1202     test_cflags "$@" && add_cflags "$@"
1203 }
1204
1205 check_cxxflags(){
1206     log check_cxxflags "$@"
1207     set -- $($cflags_filter "$@")
1208     test_cxx "$@" <<EOF && append CXXFLAGS "$@"
1209 int x;
1210 EOF
1211 }
1212
1213 test_objcflags(){
1214     log test_objcflags "$@"
1215     set -- $($objcflags_filter "$@")
1216     test_objcc "$@" <<EOF
1217 int x;
1218 EOF
1219 }
1220
1221 check_objcflags(){
1222     log check_objcflags "$@"
1223     test_objcflags "$@" && add_objcflags "$@"
1224 }
1225
1226 test_ldflags(){
1227     log test_ldflags "$@"
1228     set -- $($ldflags_filter "$@")
1229     test_ld "cc" "$@" <<EOF
1230 int main(void){ return 0; }
1231 EOF
1232 }
1233
1234 check_ldflags(){
1235     log check_ldflags "$@"
1236     test_ldflags "$@" && add_ldflags "$@"
1237 }
1238
1239 test_stripflags(){
1240     log test_stripflags "$@"
1241     # call test_cc to get a fresh TMPO
1242     test_cc <<EOF
1243 int main(void) { return 0; }
1244 EOF
1245     test_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1246 }
1247
1248 check_stripflags(){
1249     log check_stripflags "$@"
1250     test_stripflags "$@" && add_stripflags "$@"
1251 }
1252
1253 check_headers(){
1254     log check_headers "$@"
1255     headers=$1
1256     shift
1257     disable_sanitized $headers
1258     {
1259         for hdr in $headers; do
1260             print_include $hdr
1261         done
1262         echo "int x;"
1263     } | test_cpp "$@" && enable_sanitized $headers
1264 }
1265
1266 check_header_objcc(){
1267     log check_header_objcc "$@"
1268     rm -f -- "$TMPO"
1269     header=$1
1270     shift
1271     disable_sanitized $header
1272     {
1273        echo "#include <$header>"
1274        echo "int main(void) { return 0; }"
1275     } | test_objcc && test_stat "$TMPO" && enable_sanitized $header
1276 }
1277
1278 check_apple_framework(){
1279     log check_apple_framework "$@"
1280     framework="$1"
1281     name="$(tolower $framework)"
1282     header="${framework}/${framework}.h"
1283     disable $name
1284     check_header_objcc $header &&
1285         enable $name && eval ${name}_extralibs='"-framework $framework"'
1286 }
1287
1288 check_func(){
1289     log check_func "$@"
1290     func=$1
1291     shift
1292     disable $func
1293     test_ld "cc" "$@" <<EOF && enable $func
1294 extern int $func();
1295 int main(void){ $func(); }
1296 EOF
1297 }
1298
1299 check_complexfunc(){
1300     log check_complexfunc "$@"
1301     func=$1
1302     narg=$2
1303     shift 2
1304     test $narg = 2 && args="f, g" || args="f * I"
1305     disable $func
1306     test_ld "cc" "$@" <<EOF && enable $func
1307 #include <complex.h>
1308 #include <math.h>
1309 float foo(complex float f, complex float g) { return $func($args); }
1310 int main(void){ return (int) foo; }
1311 EOF
1312 }
1313
1314 check_mathfunc(){
1315     log check_mathfunc "$@"
1316     func=$1
1317     narg=$2
1318     shift 2
1319     test $narg = 2 && args="f, g" || args="f"
1320     disable $func
1321     test_ld "cc" "$@" <<EOF && enable $func
1322 #include <math.h>
1323 float foo(float f, float g) { return $func($args); }
1324 int main(void){ return (int) foo; }
1325 EOF
1326 }
1327
1328 check_func_headers(){
1329     log check_func_headers "$@"
1330     headers=$1
1331     funcs=$2
1332     shift 2
1333     {
1334         for hdr in $headers; do
1335             print_include $hdr
1336         done
1337         echo "#include <stdint.h>"
1338         for func in $funcs; do
1339             echo "long check_$func(void) { return (long) $func; }"
1340         done
1341         echo "int main(void) { int ret = 0;"
1342         # LTO could optimize out the test functions without this
1343         for func in $funcs; do
1344             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1345         done
1346         echo "return ret; }"
1347     } | test_ld "cc" "$@" && enable $funcs && enable_sanitized $headers
1348 }
1349
1350 check_class_headers_cpp(){
1351     log check_class_headers_cpp "$@"
1352     headers=$1
1353     classes=$2
1354     shift 2
1355     {
1356         for hdr in $headers; do
1357             echo "#include <$hdr>"
1358         done
1359         echo "int main(void) { "
1360         i=1
1361         for class in $classes; do
1362             echo "$class obj$i;"
1363             i=$(expr $i + 1)
1364         done
1365         echo "return 0; }"
1366     } | test_ld "cxx" "$@" && enable $funcs && enable_sanitized $headers
1367 }
1368
1369 test_cpp_condition(){
1370     log test_cpp_condition "$@"
1371     header=$1
1372     condition=$2
1373     shift 2
1374     test_cpp "$@" <<EOF
1375 #include <$header>
1376 #if !($condition)
1377 #error "unsatisfied condition: $condition"
1378 #endif
1379 EOF
1380 }
1381
1382 check_cpp_condition(){
1383     log check_cpp_condition "$@"
1384     name=$1
1385     shift 1
1386     disable $name
1387     test_cpp_condition "$@" && enable $name
1388 }
1389
1390 test_cflags_cc(){
1391     log test_cflags_cc "$@"
1392     flags=$1
1393     header=$2
1394     condition=$3
1395     shift 3
1396     set -- $($cflags_filter "$flags")
1397     test_cc "$@" <<EOF
1398 #include <$header>
1399 #if !($condition)
1400 #error "unsatisfied condition: $condition"
1401 #endif
1402 EOF
1403 }
1404
1405 check_lib(){
1406     log check_lib "$@"
1407     name="$1"
1408     headers="$2"
1409     funcs="$3"
1410     shift 3
1411     disable $name
1412     check_func_headers "$headers" "$funcs" "$@" &&
1413         enable $name && eval ${name}_extralibs="\$@"
1414 }
1415
1416 check_lib_cpp(){
1417     log check_lib_cpp "$@"
1418     name="$1"
1419     headers="$2"
1420     classes="$3"
1421     shift 3
1422     disable $name
1423     check_class_headers_cpp "$headers" "$classes" "$@" &&
1424         enable $name && eval ${name}_extralibs="\$@"
1425 }
1426
1427 test_pkg_config(){
1428     log test_pkg_config "$@"
1429     name="$1"
1430     pkg_version="$2"
1431     pkg="${2%% *}"
1432     headers="$3"
1433     funcs="$4"
1434     shift 4
1435     disable $name
1436     test_cmd $pkg_config --exists --print-errors $pkg_version || return
1437     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1438     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1439     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1440         enable $name &&
1441         set_sanitized "${name}_cflags"    $pkg_cflags &&
1442         set_sanitized "${name}_extralibs" $pkg_libs
1443 }
1444
1445 check_pkg_config(){
1446     log check_pkg_config "$@"
1447     name="$1"
1448     test_pkg_config "$@" &&
1449         eval add_cflags \$${name}_cflags
1450 }
1451
1452 test_exec(){
1453     test_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1454 }
1455
1456 check_exec_crash(){
1457     log check_exec_crash "$@"
1458     code=$(cat)
1459
1460     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1461     # are safe but may not be available everywhere.  Thus we use
1462     # raise(SIGTERM) instead.  The check is run in a subshell so we
1463     # can redirect the "Terminated" message from the shell.  SIGBUS
1464     # is not defined by standard C so it is used conditionally.
1465
1466     (test_exec "$@") >> $logfile 2>&1 <<EOF
1467 #include <signal.h>
1468 static void sighandler(int sig){
1469     raise(SIGTERM);
1470 }
1471 int foo(void){
1472     $code
1473 }
1474 int (*func_ptr)(void) = foo;
1475 int main(void){
1476     signal(SIGILL, sighandler);
1477     signal(SIGFPE, sighandler);
1478     signal(SIGSEGV, sighandler);
1479 #ifdef SIGBUS
1480     signal(SIGBUS, sighandler);
1481 #endif
1482     return func_ptr();
1483 }
1484 EOF
1485 }
1486
1487 check_type(){
1488     log check_type "$@"
1489     headers=$1
1490     type=$2
1491     shift 2
1492     disable_sanitized "$type"
1493     test_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1494 }
1495
1496 check_struct(){
1497     log check_struct "$@"
1498     headers=$1
1499     struct=$2
1500     member=$3
1501     shift 3
1502     disable_sanitized "${struct}_${member}"
1503     test_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1504         enable_sanitized "${struct}_${member}"
1505 }
1506
1507 check_builtin(){
1508     log check_builtin "$@"
1509     name=$1
1510     headers=$2
1511     builtin=$3
1512     shift 3
1513     disable "$name"
1514     test_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1515 }
1516
1517 check_compile_assert(){
1518     log check_compile_assert "$@"
1519     name=$1
1520     headers=$2
1521     condition=$3
1522     shift 3
1523     disable "$name"
1524     test_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1525 }
1526
1527 check_cc(){
1528     log check_cc "$@"
1529     name=$1
1530     shift
1531     disable "$name"
1532     test_code cc "$@" && enable "$name"
1533 }
1534
1535 require(){
1536     log require "$@"
1537     name_version="$1"
1538     name="${1%% *}"
1539     shift
1540     check_lib $name "$@" || die "ERROR: $name_version not found"
1541 }
1542
1543 require_cc(){
1544     log require_cc "$@"
1545     name="$1"
1546     check_cc "$@" || die "ERROR: $name failed"
1547 }
1548
1549 require_cpp(){
1550     name="$1"
1551     headers="$2"
1552     classes="$3"
1553     shift 3
1554     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1555 }
1556
1557 require_headers(){
1558     log require_headers "$@"
1559     headers="$1"
1560     check_headers "$@" || die "ERROR: $headers not found"
1561 }
1562
1563 require_cpp_condition(){
1564     log require_cpp_condition "$@"
1565     condition="$3"
1566     check_cpp_condition "$@" || die "ERROR: $condition not satisfied"
1567 }
1568
1569 require_pkg_config(){
1570     log require_pkg_config "$@"
1571     pkg_version="$2"
1572     check_pkg_config "$@" || die "ERROR: $pkg_version not found using pkg-config$pkg_config_fail_message"
1573 }
1574
1575 test_host_cc(){
1576     log test_host_cc "$@"
1577     cat > $TMPC
1578     log_file $TMPC
1579     test_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1580 }
1581
1582 test_host_cpp(){
1583     log test_host_cpp "$@"
1584     cat > $TMPC
1585     log_file $TMPC
1586     test_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1587 }
1588
1589 check_host_cppflags(){
1590     log check_host_cppflags "$@"
1591     test_host_cpp "$@" <<EOF && append host_cppflags "$@"
1592 #include <stdlib.h>
1593 EOF
1594 }
1595
1596 check_host_cflags(){
1597     log check_host_cflags "$@"
1598     set -- $($host_cflags_filter "$@")
1599     test_host_cc "$@" <<EOF && append host_cflags "$@"
1600 int x;
1601 EOF
1602 }
1603
1604 test_host_cpp_condition(){
1605     log test_host_cpp_condition "$@"
1606     header=$1
1607     condition=$2
1608     shift 2
1609     test_host_cpp "$@" <<EOF
1610 #include <$header>
1611 #if !($condition)
1612 #error "unsatisfied condition: $condition"
1613 #endif
1614 EOF
1615 }
1616
1617 check_host_cpp_condition(){
1618     log check_host_cpp_condition "$@"
1619     name=$1
1620     shift 1
1621     disable $name
1622     test_host_cpp_condition "$@" && enable $name
1623 }
1624
1625 cp_if_changed(){
1626     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1627     mkdir -p "$(dirname $2)"
1628     cp -f "$1" "$2"
1629 }
1630
1631 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1632 # system-dependent things.
1633
1634 AVCODEC_COMPONENTS="
1635     bsfs
1636     decoders
1637     encoders
1638     hwaccels
1639     parsers
1640 "
1641
1642 AVDEVICE_COMPONENTS="
1643     indevs
1644     outdevs
1645 "
1646
1647 AVFILTER_COMPONENTS="
1648     filters
1649 "
1650
1651 AVFORMAT_COMPONENTS="
1652     demuxers
1653     muxers
1654     protocols
1655 "
1656
1657 COMPONENT_LIST="
1658     $AVCODEC_COMPONENTS
1659     $AVDEVICE_COMPONENTS
1660     $AVFILTER_COMPONENTS
1661     $AVFORMAT_COMPONENTS
1662 "
1663
1664 EXAMPLE_LIST="
1665     avio_dir_cmd_example
1666     avio_reading_example
1667     decode_audio_example
1668     decode_video_example
1669     demuxing_decoding_example
1670     encode_audio_example
1671     encode_video_example
1672     extract_mvs_example
1673     filter_audio_example
1674     filtering_audio_example
1675     filtering_video_example
1676     http_multiclient_example
1677     hw_decode_example
1678     metadata_example
1679     muxing_example
1680     qsvdec_example
1681     remuxing_example
1682     resampling_audio_example
1683     scaling_video_example
1684     transcode_aac_example
1685     transcoding_example
1686     vaapi_encode_example
1687     vaapi_transcode_example
1688 "
1689
1690 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1691     alsa
1692     appkit
1693     avfoundation
1694     bzlib
1695     coreimage
1696     iconv
1697     libxcb
1698     libxcb_shm
1699     libxcb_shape
1700     libxcb_xfixes
1701     lzma
1702     schannel
1703     sdl2
1704     securetransport
1705     sndio
1706     xlib
1707     zlib
1708 "
1709
1710 EXTERNAL_LIBRARY_GPL_LIST="
1711     avisynth
1712     frei0r
1713     libcdio
1714     libdavs2
1715     librubberband
1716     libvidstab
1717     libx264
1718     libx265
1719     libxavs
1720     libxavs2
1721     libxvid
1722 "
1723
1724 EXTERNAL_LIBRARY_NONFREE_LIST="
1725     decklink
1726     libfdk_aac
1727     openssl
1728     libtls
1729 "
1730
1731 EXTERNAL_LIBRARY_VERSION3_LIST="
1732     gmp
1733     libaribb24
1734     liblensfun
1735     libopencore_amrnb
1736     libopencore_amrwb
1737     libvmaf
1738     libvo_amrwbenc
1739     mbedtls
1740     rkmpp
1741 "
1742
1743 EXTERNAL_LIBRARY_GPLV3_LIST="
1744     libsmbclient
1745 "
1746
1747 EXTERNAL_LIBRARY_LIST="
1748     $EXTERNAL_LIBRARY_GPL_LIST
1749     $EXTERNAL_LIBRARY_NONFREE_LIST
1750     $EXTERNAL_LIBRARY_VERSION3_LIST
1751     $EXTERNAL_LIBRARY_GPLV3_LIST
1752     chromaprint
1753     gcrypt
1754     gnutls
1755     jni
1756     ladspa
1757     libaom
1758     libass
1759     libbluray
1760     libbs2b
1761     libcaca
1762     libcelt
1763     libcodec2
1764     libdav1d
1765     libdc1394
1766     libdrm
1767     libflite
1768     libfontconfig
1769     libfreetype
1770     libfribidi
1771     libgme
1772     libgsm
1773     libiec61883
1774     libilbc
1775     libjack
1776     libklvanc
1777     libkvazaar
1778     libmodplug
1779     libmp3lame
1780     libmysofa
1781     libopencv
1782     libopenh264
1783     libopenjpeg
1784     libopenmpt
1785     libopus
1786     libpulse
1787     librsvg
1788     librtmp
1789     libshine
1790     libsmbclient
1791     libsnappy
1792     libsoxr
1793     libspeex
1794     libsrt
1795     libssh
1796     libtensorflow
1797     libtesseract
1798     libtheora
1799     libtwolame
1800     libv4l2
1801     libvorbis
1802     libvpx
1803     libwavpack
1804     libwebp
1805     libxml2
1806     libzimg
1807     libzmq
1808     libzvbi
1809     lv2
1810     mediacodec
1811     openal
1812     opengl
1813     pocketsphinx
1814     vapoursynth
1815 "
1816
1817 HWACCEL_AUTODETECT_LIBRARY_LIST="
1818     amf
1819     audiotoolbox
1820     crystalhd
1821     cuda
1822     cuda_llvm
1823     cuvid
1824     d3d11va
1825     dxva2
1826     ffnvcodec
1827     nvdec
1828     nvenc
1829     vaapi
1830     vdpau
1831     videotoolbox
1832     v4l2_m2m
1833     xvmc
1834 "
1835
1836 # catchall list of things that require external libs to link
1837 EXTRALIBS_LIST="
1838     cpu_init
1839     cws2fws
1840 "
1841
1842 HWACCEL_LIBRARY_NONFREE_LIST="
1843     cuda_nvcc
1844     cuda_sdk
1845     libnpp
1846 "
1847
1848 HWACCEL_LIBRARY_LIST="
1849     $HWACCEL_LIBRARY_NONFREE_LIST
1850     libmfx
1851     mmal
1852     omx
1853     opencl
1854 "
1855
1856 DOCUMENT_LIST="
1857     doc
1858     htmlpages
1859     manpages
1860     podpages
1861     txtpages
1862 "
1863
1864 FEATURE_LIST="
1865     ftrapv
1866     gray
1867     hardcoded_tables
1868     omx_rpi
1869     runtime_cpudetect
1870     safe_bitstream_reader
1871     shared
1872     small
1873     static
1874     swscale_alpha
1875 "
1876
1877 # this list should be kept in linking order
1878 LIBRARY_LIST="
1879     avdevice
1880     avfilter
1881     swscale
1882     postproc
1883     avformat
1884     avcodec
1885     swresample
1886     avresample
1887     avutil
1888 "
1889
1890 LICENSE_LIST="
1891     gpl
1892     nonfree
1893     version3
1894 "
1895
1896 PROGRAM_LIST="
1897     ffplay
1898     ffprobe
1899     ffmpeg
1900 "
1901
1902 SUBSYSTEM_LIST="
1903     dct
1904     dwt
1905     error_resilience
1906     faan
1907     fast_unaligned
1908     fft
1909     lsp
1910     lzo
1911     mdct
1912     pixelutils
1913     network
1914     rdft
1915 "
1916
1917 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1918 CONFIG_LIST="
1919     $DOCUMENT_LIST
1920     $EXAMPLE_LIST
1921     $EXTERNAL_LIBRARY_LIST
1922     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1923     $HWACCEL_LIBRARY_LIST
1924     $HWACCEL_AUTODETECT_LIBRARY_LIST
1925     $FEATURE_LIST
1926     $LICENSE_LIST
1927     $LIBRARY_LIST
1928     $PROGRAM_LIST
1929     $SUBSYSTEM_LIST
1930     autodetect
1931     fontconfig
1932     linux_perf
1933     memory_poisoning
1934     neon_clobber_test
1935     ossfuzz
1936     pic
1937     thumb
1938     valgrind_backtrace
1939     xmm_clobber_test
1940     $COMPONENT_LIST
1941 "
1942
1943 THREADS_LIST="
1944     pthreads
1945     os2threads
1946     w32threads
1947 "
1948
1949 ATOMICS_LIST="
1950     atomics_gcc
1951     atomics_suncc
1952     atomics_win32
1953 "
1954
1955 AUTODETECT_LIBS="
1956     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1957     $HWACCEL_AUTODETECT_LIBRARY_LIST
1958     $THREADS_LIST
1959 "
1960
1961 ARCH_LIST="
1962     aarch64
1963     alpha
1964     arm
1965     avr32
1966     avr32_ap
1967     avr32_uc
1968     bfin
1969     ia64
1970     m68k
1971     mips
1972     mips64
1973     parisc
1974     ppc
1975     ppc64
1976     s390
1977     sh4
1978     sparc
1979     sparc64
1980     tilegx
1981     tilepro
1982     tomi
1983     x86
1984     x86_32
1985     x86_64
1986 "
1987
1988 ARCH_EXT_LIST_ARM="
1989     armv5te
1990     armv6
1991     armv6t2
1992     armv8
1993     neon
1994     vfp
1995     vfpv3
1996     setend
1997 "
1998
1999 ARCH_EXT_LIST_MIPS="
2000     mipsfpu
2001     mips32r2
2002     mips32r5
2003     mips64r2
2004     mips32r6
2005     mips64r6
2006     mipsdsp
2007     mipsdspr2
2008     msa
2009     msa2
2010 "
2011
2012 ARCH_EXT_LIST_LOONGSON="
2013     loongson2
2014     loongson3
2015     mmi
2016 "
2017
2018 ARCH_EXT_LIST_X86_SIMD="
2019     aesni
2020     amd3dnow
2021     amd3dnowext
2022     avx
2023     avx2
2024     avx512
2025     fma3
2026     fma4
2027     mmx
2028     mmxext
2029     sse
2030     sse2
2031     sse3
2032     sse4
2033     sse42
2034     ssse3
2035     xop
2036 "
2037
2038 ARCH_EXT_LIST_PPC="
2039     altivec
2040     dcbzl
2041     ldbrx
2042     power8
2043     ppc4xx
2044     vsx
2045 "
2046
2047 ARCH_EXT_LIST_X86="
2048     $ARCH_EXT_LIST_X86_SIMD
2049     cpunop
2050     i686
2051 "
2052
2053 ARCH_EXT_LIST="
2054     $ARCH_EXT_LIST_ARM
2055     $ARCH_EXT_LIST_PPC
2056     $ARCH_EXT_LIST_X86
2057     $ARCH_EXT_LIST_MIPS
2058     $ARCH_EXT_LIST_LOONGSON
2059 "
2060
2061 ARCH_FEATURES="
2062     aligned_stack
2063     fast_64bit
2064     fast_clz
2065     fast_cmov
2066     local_aligned
2067     simd_align_16
2068     simd_align_32
2069     simd_align_64
2070 "
2071
2072 BUILTIN_LIST="
2073     atomic_cas_ptr
2074     machine_rw_barrier
2075     MemoryBarrier
2076     mm_empty
2077     rdtsc
2078     sem_timedwait
2079     sync_val_compare_and_swap
2080 "
2081 HAVE_LIST_CMDLINE="
2082     inline_asm
2083     symver
2084     x86asm
2085 "
2086
2087 HAVE_LIST_PUB="
2088     bigendian
2089     fast_unaligned
2090 "
2091
2092 HEADERS_LIST="
2093     arpa_inet_h
2094     asm_types_h
2095     cdio_paranoia_h
2096     cdio_paranoia_paranoia_h
2097     cuda_h
2098     dispatch_dispatch_h
2099     dev_bktr_ioctl_bt848_h
2100     dev_bktr_ioctl_meteor_h
2101     dev_ic_bt8xx_h
2102     dev_video_bktr_ioctl_bt848_h
2103     dev_video_meteor_ioctl_meteor_h
2104     direct_h
2105     dirent_h
2106     dxgidebug_h
2107     dxva_h
2108     ES2_gl_h
2109     gsm_h
2110     io_h
2111     linux_perf_event_h
2112     machine_ioctl_bt848_h
2113     machine_ioctl_meteor_h
2114     malloc_h
2115     opencv2_core_core_c_h
2116     OpenGL_gl3_h
2117     poll_h
2118     sys_param_h
2119     sys_resource_h
2120     sys_select_h
2121     sys_soundcard_h
2122     sys_time_h
2123     sys_un_h
2124     sys_videoio_h
2125     termios_h
2126     udplite_h
2127     unistd_h
2128     valgrind_valgrind_h
2129     windows_h
2130     winsock2_h
2131 "
2132
2133 INTRINSICS_LIST="
2134     intrinsics_neon
2135 "
2136
2137 COMPLEX_FUNCS="
2138     cabs
2139     cexp
2140 "
2141
2142 MATH_FUNCS="
2143     atanf
2144     atan2f
2145     cbrt
2146     cbrtf
2147     copysign
2148     cosf
2149     erf
2150     exp2
2151     exp2f
2152     expf
2153     hypot
2154     isfinite
2155     isinf
2156     isnan
2157     ldexpf
2158     llrint
2159     llrintf
2160     log2
2161     log2f
2162     log10f
2163     lrint
2164     lrintf
2165     powf
2166     rint
2167     round
2168     roundf
2169     sinf
2170     trunc
2171     truncf
2172 "
2173
2174 SYSTEM_FEATURES="
2175     dos_paths
2176     libc_msvcrt
2177     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2178     section_data_rel_ro
2179     threads
2180     uwp
2181     winrt
2182 "
2183
2184 SYSTEM_FUNCS="
2185     access
2186     aligned_malloc
2187     arc4random
2188     clock_gettime
2189     closesocket
2190     CommandLineToArgvW
2191     fcntl
2192     getaddrinfo
2193     gethrtime
2194     getopt
2195     GetProcessAffinityMask
2196     GetProcessMemoryInfo
2197     GetProcessTimes
2198     getrusage
2199     GetSystemTimeAsFileTime
2200     gettimeofday
2201     glob
2202     glXGetProcAddress
2203     gmtime_r
2204     inet_aton
2205     isatty
2206     kbhit
2207     localtime_r
2208     lstat
2209     lzo1x_999_compress
2210     mach_absolute_time
2211     MapViewOfFile
2212     memalign
2213     mkstemp
2214     mmap
2215     mprotect
2216     nanosleep
2217     PeekNamedPipe
2218     posix_memalign
2219     pthread_cancel
2220     sched_getaffinity
2221     SecItemImport
2222     SetConsoleTextAttribute
2223     SetConsoleCtrlHandler
2224     setmode
2225     setrlimit
2226     Sleep
2227     strerror_r
2228     sysconf
2229     sysctl
2230     usleep
2231     UTGetOSTypeFromString
2232     VirtualAlloc
2233     wglGetProcAddress
2234 "
2235
2236 SYSTEM_LIBRARIES="
2237     bcrypt
2238     vaapi_drm
2239     vaapi_x11
2240     vdpau_x11
2241 "
2242
2243 TOOLCHAIN_FEATURES="
2244     as_arch_directive
2245     as_dn_directive
2246     as_fpu_directive
2247     as_func
2248     as_object_arch
2249     asm_mod_q
2250     blocks_extension
2251     ebp_available
2252     ebx_available
2253     gnu_as
2254     gnu_windres
2255     ibm_asm
2256     inline_asm_direct_symbol_refs
2257     inline_asm_labels
2258     inline_asm_nonlocal_labels
2259     pragma_deprecated
2260     rsync_contimeout
2261     symver_asm_label
2262     symver_gnu_asm
2263     vfp_args
2264     xform_asm
2265     xmm_clobbers
2266 "
2267
2268 TYPES_LIST="
2269     kCMVideoCodecType_HEVC
2270     kCVPixelFormatType_420YpCbCr10BiPlanarVideoRange
2271     socklen_t
2272     struct_addrinfo
2273     struct_group_source_req
2274     struct_ip_mreq_source
2275     struct_ipv6_mreq
2276     struct_msghdr_msg_flags
2277     struct_pollfd
2278     struct_rusage_ru_maxrss
2279     struct_sctp_event_subscribe
2280     struct_sockaddr_in6
2281     struct_sockaddr_sa_len
2282     struct_sockaddr_storage
2283     struct_stat_st_mtim_tv_nsec
2284     struct_v4l2_frmivalenum_discrete
2285 "
2286
2287 HAVE_LIST="
2288     $ARCH_EXT_LIST
2289     $(add_suffix _external $ARCH_EXT_LIST)
2290     $(add_suffix _inline   $ARCH_EXT_LIST)
2291     $ARCH_FEATURES
2292     $BUILTIN_LIST
2293     $COMPLEX_FUNCS
2294     $HAVE_LIST_CMDLINE
2295     $HAVE_LIST_PUB
2296     $HEADERS_LIST
2297     $INTRINSICS_LIST
2298     $MATH_FUNCS
2299     $SYSTEM_FEATURES
2300     $SYSTEM_FUNCS
2301     $SYSTEM_LIBRARIES
2302     $THREADS_LIST
2303     $TOOLCHAIN_FEATURES
2304     $TYPES_LIST
2305     makeinfo
2306     makeinfo_html
2307     opencl_d3d11
2308     opencl_drm_arm
2309     opencl_drm_beignet
2310     opencl_dxva2
2311     opencl_vaapi_beignet
2312     opencl_vaapi_intel_media
2313     perl
2314     pod2man
2315     texi2html
2316 "
2317
2318 # options emitted with CONFIG_ prefix but not available on the command line
2319 CONFIG_EXTRA="
2320     aandcttables
2321     ac3dsp
2322     adts_header
2323     audio_frame_queue
2324     audiodsp
2325     blockdsp
2326     bswapdsp
2327     cabac
2328     cbs
2329     cbs_av1
2330     cbs_h264
2331     cbs_h265
2332     cbs_jpeg
2333     cbs_mpeg2
2334     cbs_vp9
2335     dirac_parse
2336     dnn
2337     dvprofile
2338     exif
2339     faandct
2340     faanidct
2341     fdctdsp
2342     flacdsp
2343     fmtconvert
2344     frame_thread_encoder
2345     g722dsp
2346     golomb
2347     gplv3
2348     h263dsp
2349     h264chroma
2350     h264dsp
2351     h264parse
2352     h264pred
2353     h264qpel
2354     hevcparse
2355     hpeldsp
2356     huffman
2357     huffyuvdsp
2358     huffyuvencdsp
2359     idctdsp
2360     iirfilter
2361     mdct15
2362     intrax8
2363     iso_media
2364     ividsp
2365     jpegtables
2366     lgplv3
2367     libx262
2368     llauddsp
2369     llviddsp
2370     llvidencdsp
2371     lpc
2372     lzf
2373     me_cmp
2374     mpeg_er
2375     mpegaudio
2376     mpegaudiodsp
2377     mpegaudioheader
2378     mpegvideo
2379     mpegvideoenc
2380     mss34dsp
2381     pixblockdsp
2382     qpeldsp
2383     qsv
2384     qsvdec
2385     qsvenc
2386     qsvvpp
2387     rangecoder
2388     riffdec
2389     riffenc
2390     rtpdec
2391     rtpenc_chain
2392     rv34dsp
2393     scene_sad
2394     sinewin
2395     snappy
2396     srtp
2397     startcode
2398     texturedsp
2399     texturedspenc
2400     tpeldsp
2401     vaapi_1
2402     vaapi_encode
2403     vc1dsp
2404     videodsp
2405     vp3dsp
2406     vp56dsp
2407     vp8dsp
2408     wma_freqs
2409     wmv2dsp
2410 "
2411
2412 CMDLINE_SELECT="
2413     $ARCH_EXT_LIST
2414     $CONFIG_LIST
2415     $HAVE_LIST_CMDLINE
2416     $THREADS_LIST
2417     asm
2418     cross_compile
2419     debug
2420     extra_warnings
2421     logging
2422     lto
2423     optimizations
2424     rpath
2425     stripping
2426 "
2427
2428 PATHS_LIST="
2429     bindir
2430     datadir
2431     docdir
2432     incdir
2433     libdir
2434     mandir
2435     pkgconfigdir
2436     prefix
2437     shlibdir
2438     install_name_dir
2439 "
2440
2441 CMDLINE_SET="
2442     $PATHS_LIST
2443     ar
2444     arch
2445     as
2446     assert_level
2447     build_suffix
2448     cc
2449     objcc
2450     cpu
2451     cross_prefix
2452     custom_allocator
2453     cxx
2454     dep_cc
2455     doxygen
2456     env
2457     extra_version
2458     gas
2459     host_cc
2460     host_cflags
2461     host_extralibs
2462     host_ld
2463     host_ldflags
2464     host_os
2465     ignore_tests
2466     install
2467     ld
2468     ln_s
2469     logfile
2470     malloc_prefix
2471     nm
2472     optflags
2473     nvcc
2474     nvccflags
2475     pkg_config
2476     pkg_config_flags
2477     progs_suffix
2478     random_seed
2479     ranlib
2480     samples
2481     strip
2482     sws_max_filter_size
2483     sysinclude
2484     sysroot
2485     target_exec
2486     target_os
2487     target_path
2488     target_samples
2489     tempprefix
2490     toolchain
2491     valgrind
2492     windres
2493     x86asmexe
2494 "
2495
2496 CMDLINE_APPEND="
2497     extra_cflags
2498     extra_cxxflags
2499     extra_objcflags
2500     host_cppflags
2501 "
2502
2503 # code dependency declarations
2504
2505 # architecture extensions
2506
2507 armv5te_deps="arm"
2508 armv6_deps="arm"
2509 armv6t2_deps="arm"
2510 armv8_deps="aarch64"
2511 neon_deps_any="aarch64 arm"
2512 intrinsics_neon_deps="neon"
2513 vfp_deps_any="aarch64 arm"
2514 vfpv3_deps="vfp"
2515 setend_deps="arm"
2516
2517 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2518
2519 altivec_deps="ppc"
2520 dcbzl_deps="ppc"
2521 ldbrx_deps="ppc"
2522 ppc4xx_deps="ppc"
2523 vsx_deps="altivec"
2524 power8_deps="vsx"
2525
2526 loongson2_deps="mips"
2527 loongson3_deps="mips"
2528 mips32r2_deps="mips"
2529 mips32r5_deps="mips"
2530 mips32r6_deps="mips"
2531 mips64r2_deps="mips"
2532 mips64r6_deps="mips"
2533 mipsfpu_deps="mips"
2534 mipsdsp_deps="mips"
2535 mipsdspr2_deps="mips"
2536 mmi_deps="mips"
2537 msa_deps="mipsfpu"
2538 msa2_deps="msa"
2539
2540 cpunop_deps="i686"
2541 x86_64_select="i686"
2542 x86_64_suggest="fast_cmov"
2543
2544 amd3dnow_deps="mmx"
2545 amd3dnowext_deps="amd3dnow"
2546 i686_deps="x86"
2547 mmx_deps="x86"
2548 mmxext_deps="mmx"
2549 sse_deps="mmxext"
2550 sse2_deps="sse"
2551 sse3_deps="sse2"
2552 ssse3_deps="sse3"
2553 sse4_deps="ssse3"
2554 sse42_deps="sse4"
2555 aesni_deps="sse42"
2556 avx_deps="sse42"
2557 xop_deps="avx"
2558 fma3_deps="avx"
2559 fma4_deps="avx"
2560 avx2_deps="avx"
2561 avx512_deps="avx2"
2562
2563 mmx_external_deps="x86asm"
2564 mmx_inline_deps="inline_asm x86"
2565 mmx_suggest="mmx_external mmx_inline"
2566
2567 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2568     eval dep=\$${ext}_deps
2569     eval ${ext}_external_deps='"${dep}_external"'
2570     eval ${ext}_inline_deps='"${dep}_inline"'
2571     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2572 done
2573
2574 aligned_stack_if_any="aarch64 ppc x86"
2575 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2576 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2577 fast_unaligned_if_any="aarch64 ppc x86"
2578 simd_align_16_if_any="altivec neon sse"
2579 simd_align_32_if_any="avx"
2580 simd_align_64_if_any="avx512"
2581
2582 # system capabilities
2583 linux_perf_deps="linux_perf_event_h"
2584 symver_if_any="symver_asm_label symver_gnu_asm"
2585 valgrind_backtrace_conflict="optimizations"
2586 valgrind_backtrace_deps="valgrind_valgrind_h"
2587
2588 # threading support
2589 atomics_gcc_if="sync_val_compare_and_swap"
2590 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2591 atomics_win32_if="MemoryBarrier"
2592 atomics_native_if_any="$ATOMICS_LIST"
2593 w32threads_deps="atomics_native"
2594 threads_if_any="$THREADS_LIST"
2595
2596 # subsystems
2597 cbs_av1_select="cbs"
2598 cbs_h264_select="cbs"
2599 cbs_h265_select="cbs"
2600 cbs_jpeg_select="cbs"
2601 cbs_mpeg2_select="cbs"
2602 cbs_vp9_select="cbs"
2603 dct_select="rdft"
2604 dirac_parse_select="golomb"
2605 dnn_suggest="libtensorflow"
2606 error_resilience_select="me_cmp"
2607 faandct_deps="faan"
2608 faandct_select="fdctdsp"
2609 faanidct_deps="faan"
2610 faanidct_select="idctdsp"
2611 h264dsp_select="startcode"
2612 hevcparse_select="golomb"
2613 frame_thread_encoder_deps="encoders threads"
2614 intrax8_select="blockdsp idctdsp"
2615 mdct_select="fft"
2616 mdct15_select="fft"
2617 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2618 mpeg_er_select="error_resilience"
2619 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2620 mpegaudiodsp_select="dct"
2621 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2622 mpegvideoenc_select="aandcttables me_cmp mpegvideo pixblockdsp qpeldsp"
2623 vc1dsp_select="h264chroma qpeldsp startcode"
2624 rdft_select="fft"
2625
2626 # decoders / encoders
2627 aac_decoder_select="adts_header mdct15 mdct sinewin"
2628 aac_fixed_decoder_select="adts_header mdct sinewin"
2629 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2630 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2631 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2632 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2633 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2634 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2635 adpcm_g722_decoder_select="g722dsp"
2636 adpcm_g722_encoder_select="g722dsp"
2637 aic_decoder_select="golomb idctdsp"
2638 alac_encoder_select="lpc"
2639 als_decoder_select="bswapdsp"
2640 amrnb_decoder_select="lsp"
2641 amrwb_decoder_select="lsp"
2642 amv_decoder_select="sp5x_decoder exif"
2643 amv_encoder_select="jpegtables mpegvideoenc"
2644 ape_decoder_select="bswapdsp llauddsp"
2645 apng_decoder_deps="zlib"
2646 apng_encoder_deps="zlib"
2647 apng_encoder_select="llvidencdsp"
2648 aptx_decoder_select="audio_frame_queue"
2649 aptx_encoder_select="audio_frame_queue"
2650 aptx_hd_decoder_select="audio_frame_queue"
2651 aptx_hd_encoder_select="audio_frame_queue"
2652 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2653 asv1_encoder_select="aandcttables bswapdsp fdctdsp pixblockdsp"
2654 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2655 asv2_encoder_select="aandcttables bswapdsp fdctdsp pixblockdsp"
2656 atrac1_decoder_select="mdct sinewin"
2657 atrac3_decoder_select="mdct"
2658 atrac3p_decoder_select="mdct sinewin"
2659 atrac9_decoder_select="mdct"
2660 avrn_decoder_select="exif jpegtables"
2661 bink_decoder_select="blockdsp hpeldsp"
2662 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2663 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2664 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2665 clearvideo_decoder_select="idctdsp"
2666 cllc_decoder_select="bswapdsp"
2667 comfortnoise_encoder_select="lpc"
2668 cook_decoder_select="audiodsp mdct sinewin"
2669 cscd_decoder_select="lzo"
2670 cscd_decoder_suggest="zlib"
2671 dca_decoder_select="mdct"
2672 dds_decoder_select="texturedsp"
2673 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2674 dnxhd_decoder_select="blockdsp idctdsp"
2675 dnxhd_encoder_select="blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2676 dolby_e_decoder_select="mdct"
2677 dvvideo_decoder_select="dvprofile idctdsp"
2678 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2679 dxa_decoder_deps="zlib"
2680 dxv_decoder_select="lzf texturedsp"
2681 eac3_decoder_select="ac3_decoder"
2682 eac3_encoder_select="ac3_encoder"
2683 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2684 eatgq_decoder_select="aandcttables"
2685 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2686 exr_decoder_deps="zlib"
2687 ffv1_decoder_select="rangecoder"
2688 ffv1_encoder_select="rangecoder"
2689 ffvhuff_decoder_select="huffyuv_decoder"
2690 ffvhuff_encoder_select="huffyuv_encoder"
2691 fic_decoder_select="golomb"
2692 flac_decoder_select="flacdsp"
2693 flac_encoder_select="bswapdsp flacdsp lpc"
2694 flashsv2_decoder_deps="zlib"
2695 flashsv2_encoder_deps="zlib"
2696 flashsv_decoder_deps="zlib"
2697 flashsv_encoder_deps="zlib"
2698 flv_decoder_select="h263_decoder"
2699 flv_encoder_select="h263_encoder"
2700 fourxm_decoder_select="blockdsp bswapdsp"
2701 fraps_decoder_select="bswapdsp huffman"
2702 g2m_decoder_deps="zlib"
2703 g2m_decoder_select="blockdsp idctdsp jpegtables"
2704 g729_decoder_select="audiodsp"
2705 h261_decoder_select="mpegvideo"
2706 h261_encoder_select="mpegvideoenc"
2707 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2708 h263_encoder_select="h263dsp mpegvideoenc"
2709 h263i_decoder_select="h263_decoder"
2710 h263p_decoder_select="h263_decoder"
2711 h263p_encoder_select="h263_encoder"
2712 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2713 h264_decoder_suggest="error_resilience"
2714 hap_decoder_select="snappy texturedsp"
2715 hap_encoder_deps="libsnappy"
2716 hap_encoder_select="texturedspenc"
2717 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2718 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2719 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2720 hymt_decoder_select="huffyuv_decoder"
2721 iac_decoder_select="imc_decoder"
2722 imc_decoder_select="bswapdsp fft mdct sinewin"
2723 indeo3_decoder_select="hpeldsp"
2724 indeo4_decoder_select="ividsp"
2725 indeo5_decoder_select="ividsp"
2726 interplay_video_decoder_select="hpeldsp"
2727 jpegls_decoder_select="mjpeg_decoder"
2728 jv_decoder_select="blockdsp"
2729 lagarith_decoder_select="llviddsp"
2730 ljpeg_encoder_select="idctdsp jpegtables mpegvideoenc"
2731 lscr_decoder_deps="zlib"
2732 magicyuv_decoder_select="llviddsp"
2733 magicyuv_encoder_select="llvidencdsp"
2734 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2735 metasound_decoder_select="lsp mdct sinewin"
2736 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2737 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2738 mjpeg_encoder_select="jpegtables mpegvideoenc"
2739 mjpegb_decoder_select="mjpeg_decoder"
2740 mlp_decoder_select="mlp_parser"
2741 mlp_encoder_select="lpc audio_frame_queue"
2742 motionpixels_decoder_select="bswapdsp"
2743 mp1_decoder_select="mpegaudio"
2744 mp1float_decoder_select="mpegaudio"
2745 mp2_decoder_select="mpegaudio"
2746 mp2float_decoder_select="mpegaudio"
2747 mp3_decoder_select="mpegaudio"
2748 mp3adu_decoder_select="mpegaudio"
2749 mp3adufloat_decoder_select="mpegaudio"
2750 mp3float_decoder_select="mpegaudio"
2751 mp3on4_decoder_select="mpegaudio"
2752 mp3on4float_decoder_select="mpegaudio"
2753 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2754 mpc8_decoder_select="mpegaudiodsp"
2755 mpegvideo_decoder_select="mpegvideo"
2756 mpeg1video_decoder_select="mpegvideo"
2757 mpeg1video_encoder_select="mpegvideoenc h263dsp"
2758 mpeg2video_decoder_select="mpegvideo"
2759 mpeg2video_encoder_select="mpegvideoenc h263dsp"
2760 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2761 mpeg4_encoder_select="h263_encoder"
2762 msa1_decoder_select="mss34dsp"
2763 mscc_decoder_deps="zlib"
2764 msmpeg4v1_decoder_select="h263_decoder"
2765 msmpeg4v2_decoder_select="h263_decoder"
2766 msmpeg4v2_encoder_select="h263_encoder"
2767 msmpeg4v3_decoder_select="h263_decoder"
2768 msmpeg4v3_encoder_select="h263_encoder"
2769 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2770 mts2_decoder_select="mss34dsp"
2771 mwsc_decoder_deps="zlib"
2772 mxpeg_decoder_select="mjpeg_decoder"
2773 nellymoser_decoder_select="mdct sinewin"
2774 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2775 nuv_decoder_select="idctdsp lzo"
2776 on2avc_decoder_select="mdct"
2777 opus_decoder_deps="swresample"
2778 opus_decoder_select="mdct15"
2779 opus_encoder_select="audio_frame_queue mdct15"
2780 png_decoder_deps="zlib"
2781 png_encoder_deps="zlib"
2782 png_encoder_select="llvidencdsp"
2783 prores_decoder_select="blockdsp idctdsp"
2784 prores_encoder_select="fdctdsp"
2785 qcelp_decoder_select="lsp"
2786 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2787 ra_144_decoder_select="audiodsp"
2788 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2789 ralf_decoder_select="golomb"
2790 rasc_decoder_deps="zlib"
2791 rawvideo_decoder_select="bswapdsp"
2792 rscc_decoder_deps="zlib"
2793 rtjpeg_decoder_select="me_cmp"
2794 rv10_decoder_select="h263_decoder"
2795 rv10_encoder_select="h263_encoder"
2796 rv20_decoder_select="h263_decoder"
2797 rv20_encoder_select="h263_encoder"
2798 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2799 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2800 screenpresso_decoder_deps="zlib"
2801 shorten_decoder_select="bswapdsp"
2802 sipr_decoder_select="lsp"
2803 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2804 snow_encoder_select="dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2805 sonic_decoder_select="golomb rangecoder"
2806 sonic_encoder_select="golomb rangecoder"
2807 sonic_ls_encoder_select="golomb rangecoder"
2808 sp5x_decoder_select="mjpeg_decoder"
2809 speedhq_decoder_select="mpegvideo"
2810 srgc_decoder_deps="zlib"
2811 svq1_decoder_select="hpeldsp"
2812 svq1_encoder_select="hpeldsp me_cmp mpegvideoenc"
2813 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2814 svq3_decoder_suggest="zlib"
2815 tak_decoder_select="audiodsp"
2816 tdsc_decoder_deps="zlib"
2817 tdsc_decoder_select="mjpeg_decoder"
2818 theora_decoder_select="vp3_decoder"
2819 thp_decoder_select="mjpeg_decoder"
2820 tiff_decoder_suggest="zlib lzma"
2821 tiff_encoder_suggest="zlib"
2822 truehd_decoder_select="mlp_parser"
2823 truehd_encoder_select="lpc audio_frame_queue"
2824 truemotion2_decoder_select="bswapdsp"
2825 truespeech_decoder_select="bswapdsp"
2826 tscc_decoder_deps="zlib"
2827 twinvq_decoder_select="mdct lsp sinewin"
2828 txd_decoder_select="texturedsp"
2829 utvideo_decoder_select="bswapdsp llviddsp"
2830 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2831 vble_decoder_select="llviddsp"
2832 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2833 vc1image_decoder_select="vc1_decoder"
2834 vorbis_decoder_select="mdct"
2835 vorbis_encoder_select="audio_frame_queue mdct"
2836 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2837 vp4_decoder_select="vp3_decoder"
2838 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2839 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2840 vp6a_decoder_select="vp6_decoder"
2841 vp6f_decoder_select="vp6_decoder"
2842 vp7_decoder_select="h264pred videodsp vp8dsp"
2843 vp8_decoder_select="h264pred videodsp vp8dsp"
2844 vp9_decoder_select="videodsp vp9_parser vp9_superframe_split_bsf"
2845 wcmv_decoder_deps="zlib"
2846 webp_decoder_select="vp8_decoder exif"
2847 wmalossless_decoder_select="llauddsp"
2848 wmapro_decoder_select="mdct sinewin wma_freqs"
2849 wmav1_decoder_select="mdct sinewin wma_freqs"
2850 wmav1_encoder_select="mdct sinewin wma_freqs"
2851 wmav2_decoder_select="mdct sinewin wma_freqs"
2852 wmav2_encoder_select="mdct sinewin wma_freqs"
2853 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2854 wmv1_decoder_select="h263_decoder"
2855 wmv1_encoder_select="h263_encoder"
2856 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2857 wmv2_encoder_select="h263_encoder wmv2dsp"
2858 wmv3_decoder_select="vc1_decoder"
2859 wmv3image_decoder_select="wmv3_decoder"
2860 xma1_decoder_select="wmapro_decoder"
2861 xma2_decoder_select="wmapro_decoder"
2862 zerocodec_decoder_deps="zlib"
2863 zlib_decoder_deps="zlib"
2864 zlib_encoder_deps="zlib"
2865 zmbv_decoder_deps="zlib"
2866 zmbv_encoder_deps="zlib"
2867
2868 # hardware accelerators
2869 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2870 cuda_deps="ffnvcodec"
2871 cuvid_deps="ffnvcodec"
2872 d3d11va_deps="dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2873 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2874 ffnvcodec_deps_any="libdl LoadLibrary"
2875 nvdec_deps="ffnvcodec"
2876 vaapi_x11_deps="xlib"
2877 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2878 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2879 xvmc_deps="X11_extensions_XvMClib_h"
2880
2881 h263_vaapi_hwaccel_deps="vaapi"
2882 h263_vaapi_hwaccel_select="h263_decoder"
2883 h263_videotoolbox_hwaccel_deps="videotoolbox"
2884 h263_videotoolbox_hwaccel_select="h263_decoder"
2885 h264_d3d11va_hwaccel_deps="d3d11va"
2886 h264_d3d11va_hwaccel_select="h264_decoder"
2887 h264_d3d11va2_hwaccel_deps="d3d11va"
2888 h264_d3d11va2_hwaccel_select="h264_decoder"
2889 h264_dxva2_hwaccel_deps="dxva2"
2890 h264_dxva2_hwaccel_select="h264_decoder"
2891 h264_nvdec_hwaccel_deps="nvdec"
2892 h264_nvdec_hwaccel_select="h264_decoder"
2893 h264_vaapi_hwaccel_deps="vaapi"
2894 h264_vaapi_hwaccel_select="h264_decoder"
2895 h264_vdpau_hwaccel_deps="vdpau"
2896 h264_vdpau_hwaccel_select="h264_decoder"
2897 h264_videotoolbox_hwaccel_deps="videotoolbox"
2898 h264_videotoolbox_hwaccel_select="h264_decoder"
2899 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2900 hevc_d3d11va_hwaccel_select="hevc_decoder"
2901 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2902 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2903 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2904 hevc_dxva2_hwaccel_select="hevc_decoder"
2905 hevc_nvdec_hwaccel_deps="nvdec"
2906 hevc_nvdec_hwaccel_select="hevc_decoder"
2907 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2908 hevc_vaapi_hwaccel_select="hevc_decoder"
2909 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2910 hevc_vdpau_hwaccel_select="hevc_decoder"
2911 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2912 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2913 mjpeg_nvdec_hwaccel_deps="nvdec"
2914 mjpeg_nvdec_hwaccel_select="mjpeg_decoder"
2915 mjpeg_vaapi_hwaccel_deps="vaapi"
2916 mjpeg_vaapi_hwaccel_select="mjpeg_decoder"
2917 mpeg_xvmc_hwaccel_deps="xvmc"
2918 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2919 mpeg1_nvdec_hwaccel_deps="nvdec"
2920 mpeg1_nvdec_hwaccel_select="mpeg1video_decoder"
2921 mpeg1_vdpau_hwaccel_deps="vdpau"
2922 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2923 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2924 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2925 mpeg1_xvmc_hwaccel_deps="xvmc"
2926 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2927 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2928 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2929 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2930 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2931 mpeg2_dxva2_hwaccel_deps="dxva2"
2932 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2933 mpeg2_nvdec_hwaccel_deps="nvdec"
2934 mpeg2_nvdec_hwaccel_select="mpeg2video_decoder"
2935 mpeg2_vaapi_hwaccel_deps="vaapi"
2936 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2937 mpeg2_vdpau_hwaccel_deps="vdpau"
2938 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2939 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2940 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2941 mpeg2_xvmc_hwaccel_deps="xvmc"
2942 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2943 mpeg4_nvdec_hwaccel_deps="nvdec"
2944 mpeg4_nvdec_hwaccel_select="mpeg4_decoder"
2945 mpeg4_vaapi_hwaccel_deps="vaapi"
2946 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2947 mpeg4_vdpau_hwaccel_deps="vdpau"
2948 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2949 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2950 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2951 vc1_d3d11va_hwaccel_deps="d3d11va"
2952 vc1_d3d11va_hwaccel_select="vc1_decoder"
2953 vc1_d3d11va2_hwaccel_deps="d3d11va"
2954 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2955 vc1_dxva2_hwaccel_deps="dxva2"
2956 vc1_dxva2_hwaccel_select="vc1_decoder"
2957 vc1_nvdec_hwaccel_deps="nvdec"
2958 vc1_nvdec_hwaccel_select="vc1_decoder"
2959 vc1_vaapi_hwaccel_deps="vaapi"
2960 vc1_vaapi_hwaccel_select="vc1_decoder"
2961 vc1_vdpau_hwaccel_deps="vdpau"
2962 vc1_vdpau_hwaccel_select="vc1_decoder"
2963 vp8_nvdec_hwaccel_deps="nvdec"
2964 vp8_nvdec_hwaccel_select="vp8_decoder"
2965 vp8_vaapi_hwaccel_deps="vaapi"
2966 vp8_vaapi_hwaccel_select="vp8_decoder"
2967 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2968 vp9_d3d11va_hwaccel_select="vp9_decoder"
2969 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2970 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2971 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2972 vp9_dxva2_hwaccel_select="vp9_decoder"
2973 vp9_nvdec_hwaccel_deps="nvdec"
2974 vp9_nvdec_hwaccel_select="vp9_decoder"
2975 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2976 vp9_vaapi_hwaccel_select="vp9_decoder"
2977 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2978 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2979 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2980 wmv3_nvdec_hwaccel_select="vc1_nvdec_hwaccel"
2981 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2982 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2983
2984 # hardware-accelerated codecs
2985 omx_deps="libdl pthreads"
2986 omx_rpi_select="omx"
2987 qsv_deps="libmfx"
2988 qsvdec_select="qsv"
2989 qsvenc_select="qsv"
2990 qsvvpp_select="qsv"
2991 vaapi_encode_deps="vaapi"
2992 v4l2_m2m_deps="linux_videodev2_h sem_timedwait"
2993
2994 hwupload_cuda_filter_deps="ffnvcodec"
2995 scale_npp_filter_deps="ffnvcodec libnpp"
2996 scale_cuda_filter_deps="ffnvcodec"
2997 scale_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
2998 thumbnail_cuda_filter_deps="ffnvcodec"
2999 thumbnail_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3000 transpose_npp_filter_deps="ffnvcodec libnpp"
3001
3002 amf_deps_any="libdl LoadLibrary"
3003 nvenc_deps="ffnvcodec"
3004 nvenc_deps_any="libdl LoadLibrary"
3005 nvenc_encoder_deps="nvenc"
3006
3007 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
3008 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
3009 h264_amf_encoder_deps="amf"
3010 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
3011 h264_cuvid_decoder_deps="cuvid"
3012 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
3013 h264_mediacodec_decoder_deps="mediacodec"
3014 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
3015 h264_mmal_decoder_deps="mmal"
3016 h264_nvenc_encoder_deps="nvenc"
3017 h264_omx_encoder_deps="omx"
3018 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec"
3019 h264_qsv_encoder_select="qsvenc"
3020 h264_rkmpp_decoder_deps="rkmpp"
3021 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
3022 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
3023 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
3024 h264_v4l2m2m_decoder_select="h264_mp4toannexb_bsf"
3025 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
3026 hevc_amf_encoder_deps="amf"
3027 hevc_cuvid_decoder_deps="cuvid"
3028 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
3029 hevc_mediacodec_decoder_deps="mediacodec"
3030 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
3031 hevc_nvenc_encoder_deps="nvenc"
3032 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec"
3033 hevc_qsv_encoder_select="hevcparse qsvenc"
3034 hevc_rkmpp_decoder_deps="rkmpp"
3035 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
3036 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
3037 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
3038 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
3039 hevc_v4l2m2m_decoder_select="hevc_mp4toannexb_bsf"
3040 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
3041 mjpeg_cuvid_decoder_deps="cuvid"
3042 mjpeg_qsv_encoder_deps="libmfx"
3043 mjpeg_qsv_encoder_select="qsvenc"
3044 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
3045 mjpeg_vaapi_encoder_select="cbs_jpeg jpegtables vaapi_encode"
3046 mpeg1_cuvid_decoder_deps="cuvid"
3047 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
3048 mpeg2_crystalhd_decoder_select="crystalhd"
3049 mpeg2_cuvid_decoder_deps="cuvid"
3050 mpeg2_mmal_decoder_deps="mmal"
3051 mpeg2_mediacodec_decoder_deps="mediacodec"
3052 mpeg2_qsv_decoder_select="qsvdec mpegvideo_parser"
3053 mpeg2_qsv_encoder_select="qsvenc"
3054 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
3055 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
3056 mpeg4_crystalhd_decoder_select="crystalhd"
3057 mpeg4_cuvid_decoder_deps="cuvid"
3058 mpeg4_mediacodec_decoder_deps="mediacodec"
3059 mpeg4_mmal_decoder_deps="mmal"
3060 mpeg4_omx_encoder_deps="omx"
3061 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
3062 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
3063 msmpeg4_crystalhd_decoder_select="crystalhd"
3064 nvenc_h264_encoder_select="h264_nvenc_encoder"
3065 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
3066 vc1_crystalhd_decoder_select="crystalhd"
3067 vc1_cuvid_decoder_deps="cuvid"
3068 vc1_mmal_decoder_deps="mmal"
3069 vc1_qsv_decoder_select="qsvdec vc1_parser"
3070 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
3071 vp8_cuvid_decoder_deps="cuvid"
3072 vp8_mediacodec_decoder_deps="mediacodec"
3073 vp8_qsv_decoder_select="qsvdec vp8_parser"
3074 vp8_rkmpp_decoder_deps="rkmpp"
3075 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
3076 vp8_vaapi_encoder_select="vaapi_encode"
3077 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
3078 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
3079 vp9_cuvid_decoder_deps="cuvid"
3080 vp9_mediacodec_decoder_deps="mediacodec"
3081 vp9_rkmpp_decoder_deps="rkmpp"
3082 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
3083 vp9_vaapi_encoder_select="vaapi_encode"
3084 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
3085 wmv3_crystalhd_decoder_select="crystalhd"
3086
3087 # parsers
3088 aac_parser_select="adts_header"
3089 av1_parser_select="cbs_av1"
3090 h264_parser_select="golomb h264dsp h264parse"
3091 hevc_parser_select="hevcparse"
3092 mpegaudio_parser_select="mpegaudioheader"
3093 mpegvideo_parser_select="mpegvideo"
3094 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
3095 vc1_parser_select="vc1dsp"
3096
3097 # bitstream_filters
3098 aac_adtstoasc_bsf_select="adts_header"
3099 av1_frame_split_bsf_select="cbs_av1"
3100 av1_metadata_bsf_select="cbs_av1"
3101 eac3_core_bsf_select="ac3_parser"
3102 filter_units_bsf_select="cbs"
3103 h264_metadata_bsf_deps="const_nan"
3104 h264_metadata_bsf_select="cbs_h264"
3105 h264_redundant_pps_bsf_select="cbs_h264"
3106 hevc_metadata_bsf_select="cbs_h265"
3107 mjpeg2jpeg_bsf_select="jpegtables"
3108 mpeg2_metadata_bsf_select="cbs_mpeg2"
3109 trace_headers_bsf_select="cbs"
3110 vp9_metadata_bsf_select="cbs_vp9"
3111
3112 # external libraries
3113 aac_at_decoder_deps="audiotoolbox"
3114 aac_at_decoder_select="aac_adtstoasc_bsf"
3115 ac3_at_decoder_deps="audiotoolbox"
3116 ac3_at_decoder_select="ac3_parser"
3117 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
3118 alac_at_decoder_deps="audiotoolbox"
3119 amr_nb_at_decoder_deps="audiotoolbox"
3120 avisynth_deps_any="libdl LoadLibrary"
3121 avisynth_demuxer_deps="avisynth"
3122 avisynth_demuxer_select="riffdec"
3123 eac3_at_decoder_deps="audiotoolbox"
3124 eac3_at_decoder_select="ac3_parser"
3125 gsm_ms_at_decoder_deps="audiotoolbox"
3126 ilbc_at_decoder_deps="audiotoolbox"
3127 mp1_at_decoder_deps="audiotoolbox"
3128 mp2_at_decoder_deps="audiotoolbox"
3129 mp3_at_decoder_deps="audiotoolbox"
3130 mp1_at_decoder_select="mpegaudioheader"
3131 mp2_at_decoder_select="mpegaudioheader"
3132 mp3_at_decoder_select="mpegaudioheader"
3133 pcm_alaw_at_decoder_deps="audiotoolbox"
3134 pcm_mulaw_at_decoder_deps="audiotoolbox"
3135 qdmc_at_decoder_deps="audiotoolbox"
3136 qdm2_at_decoder_deps="audiotoolbox"
3137 aac_at_encoder_deps="audiotoolbox"
3138 aac_at_encoder_select="audio_frame_queue"
3139 alac_at_encoder_deps="audiotoolbox"
3140 alac_at_encoder_select="audio_frame_queue"
3141 ilbc_at_encoder_deps="audiotoolbox"
3142 ilbc_at_encoder_select="audio_frame_queue"
3143 pcm_alaw_at_encoder_deps="audiotoolbox"
3144 pcm_alaw_at_encoder_select="audio_frame_queue"
3145 pcm_mulaw_at_encoder_deps="audiotoolbox"
3146 pcm_mulaw_at_encoder_select="audio_frame_queue"
3147 chromaprint_muxer_deps="chromaprint"
3148 h264_videotoolbox_encoder_deps="pthreads"
3149 h264_videotoolbox_encoder_select="videotoolbox_encoder"
3150 hevc_videotoolbox_encoder_deps="pthreads"
3151 hevc_videotoolbox_encoder_select="videotoolbox_encoder"
3152 libaom_av1_decoder_deps="libaom"
3153 libaom_av1_encoder_deps="libaom"
3154 libaom_av1_encoder_select="extract_extradata_bsf"
3155 libaribb24_decoder_deps="libaribb24"
3156 libcelt_decoder_deps="libcelt"
3157 libcodec2_decoder_deps="libcodec2"
3158 libcodec2_encoder_deps="libcodec2"
3159 libdav1d_decoder_deps="libdav1d"
3160 libdavs2_decoder_deps="libdavs2"
3161 libfdk_aac_decoder_deps="libfdk_aac"
3162 libfdk_aac_encoder_deps="libfdk_aac"
3163 libfdk_aac_encoder_select="audio_frame_queue"
3164 libgme_demuxer_deps="libgme"
3165 libgsm_decoder_deps="libgsm"
3166 libgsm_encoder_deps="libgsm"
3167 libgsm_ms_decoder_deps="libgsm"
3168 libgsm_ms_encoder_deps="libgsm"
3169 libilbc_decoder_deps="libilbc"
3170 libilbc_encoder_deps="libilbc"
3171 libkvazaar_encoder_deps="libkvazaar"
3172 libmodplug_demuxer_deps="libmodplug"
3173 libmp3lame_encoder_deps="libmp3lame"
3174 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
3175 libopencore_amrnb_decoder_deps="libopencore_amrnb"
3176 libopencore_amrnb_encoder_deps="libopencore_amrnb"
3177 libopencore_amrnb_encoder_select="audio_frame_queue"
3178 libopencore_amrwb_decoder_deps="libopencore_amrwb"
3179 libopenh264_decoder_deps="libopenh264"
3180 libopenh264_decoder_select="h264_mp4toannexb_bsf"
3181 libopenh264_encoder_deps="libopenh264"
3182 libopenjpeg_decoder_deps="libopenjpeg"
3183 libopenjpeg_encoder_deps="libopenjpeg"
3184 libopenmpt_demuxer_deps="libopenmpt"
3185 libopus_decoder_deps="libopus"
3186 libopus_encoder_deps="libopus"
3187 libopus_encoder_select="audio_frame_queue"
3188 librsvg_decoder_deps="librsvg"
3189 libshine_encoder_deps="libshine"
3190 libshine_encoder_select="audio_frame_queue"
3191 libspeex_decoder_deps="libspeex"
3192 libspeex_encoder_deps="libspeex"
3193 libspeex_encoder_select="audio_frame_queue"
3194 libtheora_encoder_deps="libtheora"
3195 libtwolame_encoder_deps="libtwolame"
3196 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
3197 libvorbis_decoder_deps="libvorbis"
3198 libvorbis_encoder_deps="libvorbis libvorbisenc"
3199 libvorbis_encoder_select="audio_frame_queue"
3200 libvpx_vp8_decoder_deps="libvpx"
3201 libvpx_vp8_encoder_deps="libvpx"
3202 libvpx_vp9_decoder_deps="libvpx"
3203 libvpx_vp9_encoder_deps="libvpx"
3204 libwavpack_encoder_deps="libwavpack"
3205 libwavpack_encoder_select="audio_frame_queue"
3206 libwebp_encoder_deps="libwebp"
3207 libwebp_anim_encoder_deps="libwebp"
3208 libx262_encoder_deps="libx262"
3209 libx264_encoder_deps="libx264"
3210 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
3211 libx264rgb_encoder_select="libx264_encoder"
3212 libx265_encoder_deps="libx265"
3213 libxavs_encoder_deps="libxavs"
3214 libxavs2_encoder_deps="libxavs2"
3215 libxvid_encoder_deps="libxvid"
3216 libzvbi_teletext_decoder_deps="libzvbi"
3217 vapoursynth_demuxer_deps="vapoursynth"
3218 videotoolbox_suggest="coreservices"
3219 videotoolbox_deps="corefoundation coremedia corevideo"
3220 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
3221
3222 # demuxers / muxers
3223 ac3_demuxer_select="ac3_parser"
3224 aiff_muxer_select="iso_media"
3225 asf_demuxer_select="riffdec"
3226 asf_o_demuxer_select="riffdec"
3227 asf_muxer_select="riffenc"
3228 asf_stream_muxer_select="asf_muxer"
3229 avi_demuxer_select="iso_media riffdec exif"
3230 avi_muxer_select="riffenc"
3231 caf_demuxer_select="iso_media riffdec"
3232 caf_muxer_select="iso_media"
3233 dash_muxer_select="mp4_muxer"
3234 dash_demuxer_deps="libxml2"
3235 dirac_demuxer_select="dirac_parser"
3236 dts_demuxer_select="dca_parser"
3237 dtshd_demuxer_select="dca_parser"
3238 dv_demuxer_select="dvprofile"
3239 dv_muxer_select="dvprofile"
3240 dxa_demuxer_select="riffdec"
3241 eac3_demuxer_select="ac3_parser"
3242 f4v_muxer_select="mov_muxer"
3243 fifo_muxer_deps="threads"
3244 flac_demuxer_select="flac_parser"
3245 hds_muxer_select="flv_muxer"
3246 hls_muxer_select="mpegts_muxer"
3247 hls_muxer_suggest="gcrypt openssl"
3248 image2_alias_pix_demuxer_select="image2_demuxer"
3249 image2_brender_pix_demuxer_select="image2_demuxer"
3250 ipod_muxer_select="mov_muxer"
3251 ismv_muxer_select="mov_muxer"
3252 ivf_muxer_select="av1_metadata_bsf vp9_superframe_bsf"
3253 matroska_audio_muxer_select="matroska_muxer"
3254 matroska_demuxer_select="iso_media riffdec"
3255 matroska_demuxer_suggest="bzlib lzo zlib"
3256 matroska_muxer_select="iso_media riffenc"
3257 mmf_muxer_select="riffenc"
3258 mov_demuxer_select="iso_media riffdec"
3259 mov_demuxer_suggest="zlib"
3260 mov_muxer_select="iso_media riffenc rtpenc_chain"
3261 mp3_demuxer_select="mpegaudio_parser"
3262 mp3_muxer_select="mpegaudioheader"
3263 mp4_muxer_select="mov_muxer"
3264 mpegts_demuxer_select="iso_media"
3265 mpegts_muxer_select="adts_muxer latm_muxer"
3266 mpegtsraw_demuxer_select="mpegts_demuxer"
3267 mxf_d10_muxer_select="mxf_muxer"
3268 mxf_opatom_muxer_select="mxf_muxer"
3269 nut_muxer_select="riffenc"
3270 nuv_demuxer_select="riffdec"
3271 oga_muxer_select="ogg_muxer"
3272 ogg_demuxer_select="dirac_parse"
3273 ogv_muxer_select="ogg_muxer"
3274 opus_muxer_select="ogg_muxer"
3275 psp_muxer_select="mov_muxer"
3276 rtp_demuxer_select="sdp_demuxer"
3277 rtp_muxer_select="golomb"
3278 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3279 rtsp_demuxer_select="http_protocol rtpdec"
3280 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3281 sap_demuxer_select="sdp_demuxer"
3282 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3283 sdp_demuxer_select="rtpdec"
3284 smoothstreaming_muxer_select="ismv_muxer"
3285 spdif_demuxer_select="adts_header"
3286 spdif_muxer_select="adts_header"
3287 spx_muxer_select="ogg_muxer"
3288 swf_demuxer_suggest="zlib"
3289 tak_demuxer_select="tak_parser"
3290 tg2_muxer_select="mov_muxer"
3291 tgp_muxer_select="mov_muxer"
3292 vobsub_demuxer_select="mpegps_demuxer"
3293 w64_demuxer_select="wav_demuxer"
3294 w64_muxer_select="wav_muxer"
3295 wav_demuxer_select="riffdec"
3296 wav_muxer_select="riffenc"
3297 webm_muxer_select="iso_media riffenc"
3298 webm_dash_manifest_demuxer_select="matroska_demuxer"
3299 wtv_demuxer_select="mpegts_demuxer riffdec"
3300 wtv_muxer_select="mpegts_muxer riffenc"
3301 xmv_demuxer_select="riffdec"
3302 xwma_demuxer_select="riffdec"
3303
3304 # indevs / outdevs
3305 android_camera_indev_deps="android camera2ndk mediandk pthreads"
3306 android_camera_indev_extralibs="-landroid -lcamera2ndk -lmediandk"
3307 alsa_indev_deps="alsa"
3308 alsa_outdev_deps="alsa"
3309 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3310 avfoundation_indev_suggest="coregraphics applicationservices"
3311 avfoundation_indev_extralibs="-framework Foundation"
3312 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3313 caca_outdev_deps="libcaca"
3314 decklink_deps_any="libdl LoadLibrary"
3315 decklink_indev_deps="decklink threads"
3316 decklink_indev_extralibs="-lstdc++"
3317 decklink_outdev_deps="decklink threads"
3318 decklink_outdev_suggest="libklvanc"
3319 decklink_outdev_extralibs="-lstdc++"
3320 dshow_indev_deps="IBaseFilter"
3321 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3322 fbdev_indev_deps="linux_fb_h"
3323 fbdev_outdev_deps="linux_fb_h"
3324 gdigrab_indev_deps="CreateDIBSection"
3325 gdigrab_indev_extralibs="-lgdi32"
3326 gdigrab_indev_select="bmp_decoder"
3327 iec61883_indev_deps="libiec61883"
3328 jack_indev_deps="libjack"
3329 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3330 kmsgrab_indev_deps="libdrm"
3331 lavfi_indev_deps="avfilter"
3332 libcdio_indev_deps="libcdio"
3333 libdc1394_indev_deps="libdc1394"
3334 openal_indev_deps="openal"
3335 opengl_outdev_deps="opengl"
3336 opengl_outdev_suggest="sdl2"
3337 oss_indev_deps_any="sys_soundcard_h"
3338 oss_outdev_deps_any="sys_soundcard_h"
3339 pulse_indev_deps="libpulse"
3340 pulse_outdev_deps="libpulse"
3341 sdl2_outdev_deps="sdl2"
3342 sndio_indev_deps="sndio"
3343 sndio_outdev_deps="sndio"
3344 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3345 v4l2_indev_suggest="libv4l2"
3346 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3347 v4l2_outdev_suggest="libv4l2"
3348 vfwcap_indev_deps="vfw32 vfwcap_defines"
3349 xcbgrab_indev_deps="libxcb"
3350 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3351 xv_outdev_deps="xlib"
3352
3353 # protocols
3354 async_protocol_deps="threads"
3355 bluray_protocol_deps="libbluray"
3356 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3357 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl mbedtls"
3358 ffrtmpcrypt_protocol_select="tcp_protocol"
3359 ffrtmphttp_protocol_conflict="librtmp_protocol"
3360 ffrtmphttp_protocol_select="http_protocol"
3361 ftp_protocol_select="tcp_protocol"
3362 gopher_protocol_select="network"
3363 http_protocol_select="tcp_protocol"
3364 http_protocol_suggest="zlib"
3365 httpproxy_protocol_select="tcp_protocol"
3366 httpproxy_protocol_suggest="zlib"
3367 https_protocol_select="tls_protocol"
3368 https_protocol_suggest="zlib"
3369 icecast_protocol_select="http_protocol"
3370 mmsh_protocol_select="http_protocol"
3371 mmst_protocol_select="network"
3372 rtmp_protocol_conflict="librtmp_protocol"
3373 rtmp_protocol_select="tcp_protocol"
3374 rtmp_protocol_suggest="zlib"
3375 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3376 rtmpe_protocol_suggest="zlib"
3377 rtmps_protocol_conflict="librtmp_protocol"
3378 rtmps_protocol_select="tls_protocol"
3379 rtmps_protocol_suggest="zlib"
3380 rtmpt_protocol_select="ffrtmphttp_protocol"
3381 rtmpt_protocol_suggest="zlib"
3382 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3383 rtmpte_protocol_suggest="zlib"
3384 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3385 rtmpts_protocol_suggest="zlib"
3386 rtp_protocol_select="udp_protocol"
3387 schannel_conflict="openssl gnutls libtls mbedtls"
3388 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3389 sctp_protocol_select="network"
3390 securetransport_conflict="openssl gnutls libtls mbedtls"
3391 srtp_protocol_select="rtp_protocol srtp"
3392 tcp_protocol_select="network"
3393 tls_protocol_deps_any="gnutls openssl schannel securetransport libtls mbedtls"
3394 tls_protocol_select="tcp_protocol"
3395 udp_protocol_select="network"
3396 udplite_protocol_select="network"
3397 unix_protocol_deps="sys_un_h"
3398 unix_protocol_select="network"
3399
3400 # external library protocols
3401 librtmp_protocol_deps="librtmp"
3402 librtmpe_protocol_deps="librtmp"
3403 librtmps_protocol_deps="librtmp"
3404 librtmpt_protocol_deps="librtmp"
3405 librtmpte_protocol_deps="librtmp"
3406 libsmbclient_protocol_deps="libsmbclient gplv3"
3407 libsrt_protocol_deps="libsrt"
3408 libsrt_protocol_select="network"
3409 libssh_protocol_deps="libssh"
3410 libtls_conflict="openssl gnutls mbedtls"
3411
3412 # filters
3413 afftdn_filter_deps="avcodec"
3414 afftdn_filter_select="fft"
3415 afftfilt_filter_deps="avcodec"
3416 afftfilt_filter_select="fft"
3417 afir_filter_deps="avcodec"
3418 afir_filter_select="fft"
3419 amovie_filter_deps="avcodec avformat"
3420 aresample_filter_deps="swresample"
3421 asr_filter_deps="pocketsphinx"
3422 ass_filter_deps="libass"
3423 atempo_filter_deps="avcodec"
3424 atempo_filter_select="rdft"
3425 avgblur_opencl_filter_deps="opencl"
3426 azmq_filter_deps="libzmq"
3427 blackframe_filter_deps="gpl"
3428 bm3d_filter_deps="avcodec"
3429 bm3d_filter_select="dct"
3430 boxblur_filter_deps="gpl"
3431 boxblur_opencl_filter_deps="opencl gpl"
3432 bs2b_filter_deps="libbs2b"
3433 colorkey_opencl_filter_deps="opencl"
3434 colormatrix_filter_deps="gpl"
3435 convolution_opencl_filter_deps="opencl"
3436 convolve_filter_deps="avcodec"
3437 convolve_filter_select="fft"
3438 coreimage_filter_deps="coreimage appkit"
3439 coreimage_filter_extralibs="-framework OpenGL"
3440 coreimagesrc_filter_deps="coreimage appkit"
3441 coreimagesrc_filter_extralibs="-framework OpenGL"
3442 cover_rect_filter_deps="avcodec avformat gpl"
3443 cropdetect_filter_deps="gpl"
3444 deconvolve_filter_deps="avcodec"
3445 deconvolve_filter_select="fft"
3446 deinterlace_qsv_filter_deps="libmfx"
3447 deinterlace_vaapi_filter_deps="vaapi"
3448 delogo_filter_deps="gpl"
3449 denoise_vaapi_filter_deps="vaapi"
3450 derain_filter_select="dnn"
3451 deshake_filter_select="pixelutils"
3452 dilation_opencl_filter_deps="opencl"
3453 drawtext_filter_deps="libfreetype"
3454 drawtext_filter_suggest="libfontconfig libfribidi"
3455 elbg_filter_deps="avcodec"
3456 eq_filter_deps="gpl"
3457 erosion_opencl_filter_deps="opencl"
3458 fftfilt_filter_deps="avcodec"
3459 fftfilt_filter_select="rdft"
3460 fftdnoiz_filter_deps="avcodec"
3461 fftdnoiz_filter_select="fft"
3462 find_rect_filter_deps="avcodec avformat gpl"
3463 firequalizer_filter_deps="avcodec"
3464 firequalizer_filter_select="rdft"
3465 flite_filter_deps="libflite"
3466 framerate_filter_select="scene_sad"
3467 freezedetect_filter_select="scene_sad"
3468 frei0r_filter_deps="frei0r libdl"
3469 frei0r_src_filter_deps="frei0r libdl"
3470 fspp_filter_deps="gpl"
3471 geq_filter_deps="gpl"
3472 histeq_filter_deps="gpl"
3473 hqdn3d_filter_deps="gpl"
3474 interlace_filter_deps="gpl"
3475 kerndeint_filter_deps="gpl"
3476 ladspa_filter_deps="ladspa libdl"
3477 lensfun_filter_deps="liblensfun version3"
3478 lv2_filter_deps="lv2"
3479 mcdeint_filter_deps="avcodec gpl"
3480 movie_filter_deps="avcodec avformat"
3481 mpdecimate_filter_deps="gpl"
3482 mpdecimate_filter_select="pixelutils"
3483 minterpolate_filter_select="scene_sad"
3484 mptestsrc_filter_deps="gpl"
3485 negate_filter_deps="lut_filter"
3486 nlmeans_opencl_filter_deps="opencl"
3487 nnedi_filter_deps="gpl"
3488 ocr_filter_deps="libtesseract"
3489 ocv_filter_deps="libopencv"
3490 openclsrc_filter_deps="opencl"
3491 overlay_opencl_filter_deps="opencl"
3492 overlay_qsv_filter_deps="libmfx"
3493 overlay_qsv_filter_select="qsvvpp"
3494 owdenoise_filter_deps="gpl"
3495 pan_filter_deps="swresample"
3496 perspective_filter_deps="gpl"
3497 phase_filter_deps="gpl"
3498 pp7_filter_deps="gpl"
3499 pp_filter_deps="gpl postproc"
3500 prewitt_opencl_filter_deps="opencl"
3501 procamp_vaapi_filter_deps="vaapi"
3502 program_opencl_filter_deps="opencl"
3503 pullup_filter_deps="gpl"
3504 removelogo_filter_deps="avcodec avformat swscale"
3505 repeatfields_filter_deps="gpl"
3506 resample_filter_deps="avresample"
3507 roberts_opencl_filter_deps="opencl"
3508 rubberband_filter_deps="librubberband"
3509 sab_filter_deps="gpl swscale"
3510 scale2ref_filter_deps="swscale"
3511 scale_filter_deps="swscale"
3512 scale_qsv_filter_deps="libmfx"
3513 select_filter_select="scene_sad"
3514 sharpness_vaapi_filter_deps="vaapi"
3515 showcqt_filter_deps="avcodec avformat swscale"
3516 showcqt_filter_suggest="libfontconfig libfreetype"
3517 showcqt_filter_select="fft"
3518 showfreqs_filter_deps="avcodec"
3519 showfreqs_filter_select="fft"
3520 showspectrum_filter_deps="avcodec"
3521 showspectrum_filter_select="fft"
3522 showspectrumpic_filter_deps="avcodec"
3523 showspectrumpic_filter_select="fft"
3524 signature_filter_deps="gpl avcodec avformat"
3525 smartblur_filter_deps="gpl swscale"
3526 sobel_opencl_filter_deps="opencl"
3527 sofalizer_filter_deps="libmysofa avcodec"
3528 sofalizer_filter_select="fft"
3529 spectrumsynth_filter_deps="avcodec"
3530 spectrumsynth_filter_select="fft"
3531 spp_filter_deps="gpl avcodec"
3532 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3533 sr_filter_deps="avformat swscale"
3534 sr_filter_select="dnn"
3535 stereo3d_filter_deps="gpl"
3536 subtitles_filter_deps="avformat avcodec libass"
3537 super2xsai_filter_deps="gpl"
3538 pixfmts_super2xsai_test_deps="super2xsai_filter"
3539 tinterlace_filter_deps="gpl"
3540 tinterlace_merge_test_deps="tinterlace_filter"
3541 tinterlace_pad_test_deps="tinterlace_filter"
3542 tonemap_filter_deps="const_nan"
3543 tonemap_opencl_filter_deps="opencl const_nan"
3544 transpose_opencl_filter_deps="opencl"
3545 transpose_vaapi_filter_deps="vaapi VAProcPipelineCaps_rotation_flags"
3546 unsharp_opencl_filter_deps="opencl"
3547 uspp_filter_deps="gpl avcodec"
3548 vaguedenoiser_filter_deps="gpl"
3549 vidstabdetect_filter_deps="libvidstab"
3550 vidstabtransform_filter_deps="libvidstab"
3551 libvmaf_filter_deps="libvmaf pthreads"
3552 zmq_filter_deps="libzmq"
3553 zoompan_filter_deps="swscale"
3554 zscale_filter_deps="libzimg const_nan"
3555 scale_vaapi_filter_deps="vaapi"
3556 vpp_qsv_filter_deps="libmfx"
3557 vpp_qsv_filter_select="qsvvpp"
3558 yadif_cuda_filter_deps="ffnvcodec"
3559 yadif_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3560
3561 # examples
3562 avio_dir_cmd_deps="avformat avutil"
3563 avio_reading_deps="avformat avcodec avutil"
3564 decode_audio_example_deps="avcodec avutil"
3565 decode_video_example_deps="avcodec avutil"
3566 demuxing_decoding_example_deps="avcodec avformat avutil"
3567 encode_audio_example_deps="avcodec avutil"
3568 encode_video_example_deps="avcodec avutil"
3569 extract_mvs_example_deps="avcodec avformat avutil"
3570 filter_audio_example_deps="avfilter avutil"
3571 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3572 filtering_video_example_deps="avfilter avcodec avformat avutil"
3573 http_multiclient_example_deps="avformat avutil fork"
3574 hw_decode_example_deps="avcodec avformat avutil"
3575 metadata_example_deps="avformat avutil"
3576 muxing_example_deps="avcodec avformat avutil swscale"
3577 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3578 remuxing_example_deps="avcodec avformat avutil"
3579 resampling_audio_example_deps="avutil swresample"
3580 scaling_video_example_deps="avutil swscale"
3581 transcode_aac_example_deps="avcodec avformat swresample"
3582 transcoding_example_deps="avfilter avcodec avformat avutil"
3583 vaapi_encode_example_deps="avcodec avutil h264_vaapi_encoder"
3584 vaapi_transcode_example_deps="avcodec avformat avutil h264_vaapi_encoder"
3585
3586 # EXTRALIBS_LIST
3587 cpu_init_extralibs="pthreads_extralibs"
3588 cws2fws_extralibs="zlib_extralibs"
3589
3590 # libraries, in any order
3591 avcodec_deps="avutil"
3592 avcodec_suggest="libm"
3593 avcodec_select="null_bsf"
3594 avdevice_deps="avformat avcodec avutil"
3595 avdevice_suggest="libm"
3596 avfilter_deps="avutil"
3597 avfilter_suggest="libm"
3598 avformat_deps="avcodec avutil"
3599 avformat_suggest="libm network zlib"
3600 avresample_deps="avutil"
3601 avresample_suggest="libm"
3602 avutil_suggest="clock_gettime ffnvcodec libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia bcrypt"
3603 postproc_deps="avutil gpl"
3604 postproc_suggest="libm"
3605 swresample_deps="avutil"
3606 swresample_suggest="libm libsoxr"
3607 swscale_deps="avutil"
3608 swscale_suggest="libm"
3609
3610 avcodec_extralibs="pthreads_extralibs iconv_extralibs dxva2_extralibs"
3611 avfilter_extralibs="pthreads_extralibs"
3612 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3613
3614 # programs
3615 ffmpeg_deps="avcodec avfilter avformat"
3616 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3617                hflip_filter null_filter
3618                transpose_filter trim_filter vflip_filter"
3619 ffmpeg_suggest="ole32 psapi shell32"
3620 ffplay_deps="avcodec avformat swscale swresample sdl2"
3621 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3622 ffplay_suggest="shell32"
3623 ffprobe_deps="avcodec avformat"
3624 ffprobe_suggest="shell32"
3625
3626 # documentation
3627 podpages_deps="perl"
3628 manpages_deps="perl pod2man"
3629 htmlpages_deps="perl"
3630 htmlpages_deps_any="makeinfo_html texi2html"
3631 txtpages_deps="perl makeinfo"
3632 doc_deps_any="manpages htmlpages podpages txtpages"
3633
3634 # default parameters
3635
3636 logfile="ffbuild/config.log"
3637
3638 # installation paths
3639 prefix_default="/usr/local"
3640 bindir_default='${prefix}/bin'
3641 datadir_default='${prefix}/share/ffmpeg'
3642 docdir_default='${prefix}/share/doc/ffmpeg'
3643 incdir_default='${prefix}/include'
3644 libdir_default='${prefix}/lib'
3645 mandir_default='${prefix}/share/man'
3646
3647 # toolchain
3648 ar_default="ar"
3649 cc_default="gcc"
3650 cxx_default="g++"
3651 host_cc_default="gcc"
3652 doxygen_default="doxygen"
3653 install="install"
3654 ln_s_default="ln -s -f"
3655 nm_default="nm -g"
3656 pkg_config_default=pkg-config
3657 ranlib_default="ranlib"
3658 strip_default="strip"
3659 version_script='--version-script'
3660 objformat="elf32"
3661 x86asmexe_default="nasm"
3662 windres_default="windres"
3663 striptype="direct"
3664
3665 # OS
3666 target_os_default=$(tolower $(uname -s))
3667 host_os=$target_os_default
3668
3669 # machine
3670 if test "$target_os_default" = aix; then
3671     arch_default=$(uname -p)
3672     strip_default="strip -X32_64"
3673     nm_default="nm -g -X32_64"
3674 else
3675     arch_default=$(uname -m)
3676 fi
3677 cpu="generic"
3678 intrinsics="none"
3679
3680 # configurable options
3681 enable $PROGRAM_LIST
3682 enable $DOCUMENT_LIST
3683 enable $EXAMPLE_LIST
3684 enable $(filter_out avresample $LIBRARY_LIST)
3685 enable stripping
3686
3687 enable asm
3688 enable debug
3689 enable doc
3690 enable faan faandct faanidct
3691 enable optimizations
3692 enable runtime_cpudetect
3693 enable safe_bitstream_reader
3694 enable static
3695 enable swscale_alpha
3696 enable valgrind_backtrace
3697
3698 sws_max_filter_size_default=256
3699 set_default sws_max_filter_size
3700
3701 # internal components are enabled by default
3702 enable $EXTRALIBS_LIST
3703
3704 # Avoid external, non-system, libraries getting enabled by dependency resolution
3705 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3706
3707 # build settings
3708 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3709 LIBPREF="lib"
3710 LIBSUF=".a"
3711 FULLNAME='$(NAME)$(BUILDSUF)'
3712 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3713 SLIBPREF="lib"
3714 SLIBSUF=".so"
3715 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3716 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3717 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3718 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3719 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3720 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3721 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3722
3723 asflags_filter=echo
3724 cflags_filter=echo
3725 ldflags_filter=echo
3726
3727 AS_C='-c'
3728 AS_O='-o $@'
3729 CC_C='-c'
3730 CC_E='-E -o $@'
3731 CC_O='-o $@'
3732 CXX_C='-c'
3733 CXX_O='-o $@'
3734 OBJCC_C='-c'
3735 OBJCC_E='-E -o $@'
3736 OBJCC_O='-o $@'
3737 X86ASM_O='-o $@'
3738 LD_O='-o $@'
3739 LD_LIB='-l%'
3740 LD_PATH='-L'
3741 HOSTCC_C='-c'
3742 HOSTCC_E='-E -o $@'
3743 HOSTCC_O='-o $@'
3744 HOSTLD_O='-o $@'
3745 NVCC_C='-c'
3746 NVCC_O='-o $@'
3747
3748 host_extralibs='-lm'
3749 host_cflags_filter=echo
3750 host_ldflags_filter=echo
3751
3752 target_path='$(CURDIR)'
3753
3754 # since the object filename is not given with the -MM flag, the compiler
3755 # is only able to print the basename, and we must add the path ourselves
3756 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3757 DEPFLAGS='-MM'
3758
3759 mkdir -p ffbuild
3760
3761 # find source path
3762 if test -f configure; then
3763     source_path=.
3764 elif test -f src/configure; then
3765     source_path=src
3766 else
3767     source_path=$(cd $(dirname "$0"); pwd)
3768     case "$source_path" in
3769         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3770     esac
3771     test -e "$source_path/config.h" &&
3772         die "Out of tree builds are impossible with config.h in source dir."
3773 fi
3774
3775 for v in "$@"; do
3776     r=${v#*=}
3777     l=${v%"$r"}
3778     r=$(sh_quote "$r")
3779     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3780 done
3781
3782 find_things_extern(){
3783     thing=$1
3784     pattern=$2
3785     file=$source_path/$3
3786     out=${4:-$thing}
3787     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$out/p" "$file"
3788 }
3789
3790 find_filters_extern(){
3791     file=$source_path/$1
3792     sed -n 's/^extern AVFilter ff_[avfsinkrc]\{2,5\}_\([[:alnum:]_]\{1,\}\);/\1_filter/p' $file
3793 }
3794
3795 FILTER_LIST=$(find_filters_extern libavfilter/allfilters.c)
3796 OUTDEV_LIST=$(find_things_extern muxer AVOutputFormat libavdevice/alldevices.c outdev)
3797 INDEV_LIST=$(find_things_extern demuxer AVInputFormat libavdevice/alldevices.c indev)
3798 MUXER_LIST=$(find_things_extern muxer AVOutputFormat libavformat/allformats.c)
3799 DEMUXER_LIST=$(find_things_extern demuxer AVInputFormat libavformat/allformats.c)
3800 ENCODER_LIST=$(find_things_extern encoder AVCodec libavcodec/allcodecs.c)
3801 DECODER_LIST=$(find_things_extern decoder AVCodec libavcodec/allcodecs.c)
3802 CODEC_LIST="
3803     $ENCODER_LIST
3804     $DECODER_LIST
3805 "
3806 PARSER_LIST=$(find_things_extern parser AVCodecParser libavcodec/parsers.c)
3807 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3808 HWACCEL_LIST=$(find_things_extern hwaccel AVHWAccel libavcodec/hwaccels.h)
3809 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3810
3811 AVCODEC_COMPONENTS_LIST="
3812     $BSF_LIST
3813     $DECODER_LIST
3814     $ENCODER_LIST
3815     $HWACCEL_LIST
3816     $PARSER_LIST
3817 "
3818
3819 AVDEVICE_COMPONENTS_LIST="
3820     $INDEV_LIST
3821     $OUTDEV_LIST
3822 "
3823
3824 AVFILTER_COMPONENTS_LIST="
3825     $FILTER_LIST
3826 "
3827
3828 AVFORMAT_COMPONENTS_LIST="
3829     $DEMUXER_LIST
3830     $MUXER_LIST
3831     $PROTOCOL_LIST
3832 "
3833
3834 ALL_COMPONENTS="
3835     $AVCODEC_COMPONENTS_LIST
3836     $AVDEVICE_COMPONENTS_LIST
3837     $AVFILTER_COMPONENTS_LIST
3838     $AVFORMAT_COMPONENTS_LIST
3839 "
3840
3841 for n in $COMPONENT_LIST; do
3842     v=$(toupper ${n%s})_LIST
3843     eval enable \$$v
3844     eval ${n}_if_any="\$$v"
3845 done
3846
3847 enable $ARCH_EXT_LIST
3848
3849 die_unknown(){
3850     echo "Unknown option \"$1\"."
3851     echo "See $0 --help for available options."
3852     exit 1
3853 }
3854
3855 print_in_columns() {
3856     tr ' ' '\n' | sort | tr '\r\n' '  ' | awk -v col_width=24 -v width="$ncols" '
3857     {
3858         num_cols = width > col_width ? int(width / col_width) : 1;
3859         num_rows = int((NF + num_cols-1) / num_cols);
3860         y = x = 1;
3861         for (y = 1; y <= num_rows; y++) {
3862             i = y;
3863             for (x = 1; x <= num_cols; x++) {
3864                 if (i <= NF) {
3865                   line = sprintf("%s%-" col_width "s", line, $i);
3866                 }
3867                 i = i + num_rows;
3868             }
3869             print line; line = "";
3870         }
3871     }' | sed 's/ *$//'
3872 }
3873
3874 show_list() {
3875     suffix=_$1
3876     shift
3877     echo $* | sed s/$suffix//g | print_in_columns
3878     exit 0
3879 }
3880
3881 rand_list(){
3882     IFS=', '
3883     set -- $*
3884     unset IFS
3885     for thing; do
3886         comp=${thing%:*}
3887         prob=${thing#$comp}
3888         prob=${prob#:}
3889         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3890         echo "prob ${prob:-0.5}"
3891         printf '%s\n' $comp
3892     done
3893 }
3894
3895 do_random(){
3896     action=$1
3897     shift
3898     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3899     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3900 }
3901
3902 for opt do
3903     optval="${opt#*=}"
3904     case "$opt" in
3905         --extra-ldflags=*)
3906             add_ldflags $optval
3907         ;;
3908         --extra-ldexeflags=*)
3909             add_ldexeflags $optval
3910         ;;
3911         --extra-ldsoflags=*)
3912             add_ldsoflags $optval
3913         ;;
3914         --extra-ldlibflags=*)
3915             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3916                  "removed in the future. Use --extra-ldsoflags instead."
3917             add_ldsoflags $optval
3918         ;;
3919         --extra-libs=*)
3920             add_extralibs $optval
3921         ;;
3922         --disable-devices)
3923             disable $INDEV_LIST $OUTDEV_LIST
3924         ;;
3925         --enable-debug=*)
3926             debuglevel="$optval"
3927         ;;
3928         --disable-programs)
3929             disable $PROGRAM_LIST
3930         ;;
3931         --disable-everything)
3932             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3933         ;;
3934         --disable-all)
3935             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3936             disable $LIBRARY_LIST $PROGRAM_LIST doc
3937             enable avutil
3938         ;;
3939         --enable-random|--disable-random)
3940             action=${opt%%-random}
3941             do_random ${action#--} $COMPONENT_LIST
3942         ;;
3943         --enable-random=*|--disable-random=*)
3944             action=${opt%%-random=*}
3945             do_random ${action#--} $optval
3946         ;;
3947         --enable-sdl)
3948             enable sdl2
3949         ;;
3950         --enable-*=*|--disable-*=*)
3951             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3952             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3953             eval list=\$$(toupper $thing)_LIST
3954             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3955             list=$(filter "$name" $list)
3956             [ "$list" = "" ] && warn "Option $opt did not match anything"
3957             test $action = enable && warn_if_gets_disabled $list
3958             $action $list
3959         ;;
3960         --enable-yasm|--disable-yasm)
3961             warn "The ${opt} option is only provided for compatibility and will be\n"\
3962                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3963             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3964         ;;
3965         --yasmexe=*)
3966             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3967                  "removed in the future. Use --x86asmexe instead."
3968             x86asmexe="$optval"
3969         ;;
3970         --enable-?*|--disable-?*)
3971             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3972             if is_in $option $COMPONENT_LIST; then
3973                 test $action = disable && action=unset
3974                 eval $action \$$(toupper ${option%s})_LIST
3975             elif is_in $option $CMDLINE_SELECT; then
3976                 $action $option
3977             else
3978                 die_unknown $opt
3979             fi
3980         ;;
3981         --list-*)
3982             NAME="${opt#--list-}"
3983             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3984             NAME=${NAME%s}
3985             eval show_list $NAME \$$(toupper $NAME)_LIST
3986         ;;
3987         --help|-h) show_help
3988         ;;
3989         --quiet|-q) quiet=yes
3990         ;;
3991         --fatal-warnings) enable fatal_warnings
3992         ;;
3993         --libfuzzer=*)
3994             libfuzzer_path="$optval"
3995         ;;
3996         *)
3997             optname="${opt%%=*}"
3998             optname="${optname#--}"
3999             optname=$(echo "$optname" | sed 's/-/_/g')
4000             if is_in $optname $CMDLINE_SET; then
4001                 eval $optname='$optval'
4002             elif is_in $optname $CMDLINE_APPEND; then
4003                 append $optname "$optval"
4004             else
4005                 die_unknown $opt
4006             fi
4007         ;;
4008     esac
4009 done
4010
4011 for e in $env; do
4012     eval "export $e"
4013 done
4014
4015 if disabled autodetect; then
4016
4017     # Unless iconv is explicitely disabled by the user, we still want to probe
4018     # for the iconv from the libc.
4019     disabled iconv || enable libc_iconv
4020
4021     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
4022     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
4023 fi
4024 # Mark specifically enabled, but normally autodetected libraries as requested.
4025 for lib in $AUTODETECT_LIBS; do
4026     enabled $lib && request $lib
4027 done
4028 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
4029 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
4030 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
4031
4032 disabled logging && logfile=/dev/null
4033
4034 # command line configuration sanity checks
4035
4036 # we need to build at least one lib type
4037 if ! enabled_any static shared; then
4038     cat <<EOF
4039 At least one library type must be built.
4040 Specify --enable-static to build the static libraries or --enable-shared to
4041 build the shared libraries as well. To only build the shared libraries specify
4042 --disable-static in addition to --enable-shared.
4043 EOF
4044     exit 1
4045 fi
4046
4047 die_license_disabled() {
4048     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
4049 }
4050
4051 die_license_disabled_gpl() {
4052     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
4053 }
4054
4055 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
4056 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
4057
4058 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
4059 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
4060
4061 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4062
4063 if enabled nonfree; then
4064     license="nonfree and unredistributable"
4065 elif enabled gplv3; then
4066     license="GPL version 3 or later"
4067 elif enabled lgplv3; then
4068     license="LGPL version 3 or later"
4069 elif enabled gpl; then
4070     license="GPL version 2 or later"
4071 else
4072     license="LGPL version 2.1 or later"
4073 fi
4074
4075 enabled_all gnutls openssl &&
4076     die "GnuTLS and OpenSSL must not be enabled at the same time."
4077
4078 enabled_all gnutls mbedtls &&
4079     die "GnuTLS and mbedTLS must not be enabled at the same time."
4080
4081 enabled_all openssl mbedtls &&
4082     die "OpenSSL and mbedTLS must not be enabled at the same time."
4083
4084 # Disable all the library-specific components if the library itself
4085 # is disabled, see AVCODEC_LIST and following _LIST variables.
4086
4087 disable_components(){
4088     disabled ${1} && disable $(
4089         eval components="\$$(toupper ${1})_COMPONENTS"
4090         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
4091     )
4092 }
4093
4094 map 'disable_components $v' $LIBRARY_LIST
4095
4096 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
4097 set >> $logfile
4098
4099 test -n "$valgrind" && toolchain="valgrind-memcheck"
4100
4101 enabled ossfuzz && ! echo $CFLAGS | grep -q -- "-fsanitize="  && ! echo $CFLAGS | grep -q -- "-fcoverage-mapping" &&{
4102     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
4103     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
4104 }
4105
4106 case "$toolchain" in
4107     *-asan)
4108         cc_default="${toolchain%-asan}"
4109         add_cflags  -fsanitize=address
4110         add_ldflags -fsanitize=address
4111     ;;
4112     *-msan)
4113         cc_default="${toolchain%-msan}"
4114         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
4115         add_ldflags -fsanitize=memory
4116     ;;
4117     *-tsan)
4118         cc_default="${toolchain%-tsan}"
4119         add_cflags  -fsanitize=thread
4120         add_ldflags -fsanitize=thread
4121         case "$toolchain" in
4122             gcc-tsan)
4123                 add_cflags  -fPIC
4124                 add_ldflags -fPIC
4125                 ;;
4126         esac
4127     ;;
4128     *-usan)
4129         cc_default="${toolchain%-usan}"
4130         add_cflags  -fsanitize=undefined
4131         add_ldflags -fsanitize=undefined
4132     ;;
4133     valgrind-*)
4134         target_exec_default="valgrind"
4135         case "$toolchain" in
4136             valgrind-massif)
4137                 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"
4138                 ;;
4139             valgrind-memcheck)
4140                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
4141                 ;;
4142         esac
4143     ;;
4144     msvc)
4145         # Check whether the current MSVC version needs the C99 converter.
4146         # From MSVC 2013 (compiler major version 18) onwards, it does actually
4147         # support enough of C99 to build ffmpeg. Default to the new
4148         # behaviour if the regexp was unable to match anything, since this
4149         # successfully parses the version number of existing supported
4150         # versions that require the converter (MSVC 2010 and 2012).
4151         cl_major_ver=$(cl.exe 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
4152         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
4153             cc_default="cl.exe"
4154             cxx_default="cl.exe"
4155         else
4156             die "Unsupported MSVC version (2013 or newer required)"
4157         fi
4158         ld_default="$source_path/compat/windows/mslink"
4159         nm_default="dumpbin.exe -symbols"
4160         ar_default="lib.exe"
4161         case "$arch" in
4162         aarch64|arm64)
4163             as_default="armasm64.exe"
4164             ;;
4165         arm*)
4166             as_default="armasm.exe"
4167             ;;
4168         esac
4169         target_os_default="win32"
4170         # Use a relative path for TMPDIR. This makes sure all the
4171         # ffconf temp files are written with a relative path, avoiding
4172         # issues with msys/win32 path conversion for MSVC parameters
4173         # such as -Fo<file> or -out:<file>.
4174         TMPDIR=.
4175     ;;
4176     icl)
4177         cc_default="icl"
4178         ld_default="xilink"
4179         nm_default="dumpbin -symbols"
4180         ar_default="xilib"
4181         target_os_default="win32"
4182         TMPDIR=.
4183     ;;
4184     gcov)
4185         add_cflags  -fprofile-arcs -ftest-coverage
4186         add_ldflags -fprofile-arcs -ftest-coverage
4187     ;;
4188     llvm-cov)
4189         add_cflags -fprofile-arcs -ftest-coverage
4190         add_ldflags --coverage
4191     ;;
4192     hardened)
4193         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
4194         add_cflags   -fno-strict-overflow -fstack-protector-all
4195         add_ldflags  -Wl,-z,relro -Wl,-z,now
4196         add_cflags   -fPIE
4197         add_ldexeflags -fPIE -pie
4198     ;;
4199     ?*)
4200         die "Unknown toolchain $toolchain"
4201     ;;
4202 esac
4203
4204 if test -n "$cross_prefix"; then
4205     test -n "$arch" && test -n "$target_os" ||
4206         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
4207     enable cross_compile
4208 fi
4209
4210 set_default target_os
4211 if test "$target_os" = android; then
4212     cc_default="clang"
4213 fi
4214
4215 ar_default="${cross_prefix}${ar_default}"
4216 cc_default="${cross_prefix}${cc_default}"
4217 cxx_default="${cross_prefix}${cxx_default}"
4218 nm_default="${cross_prefix}${nm_default}"
4219 pkg_config_default="${cross_prefix}${pkg_config_default}"
4220 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
4221     ranlib_default="${cross_prefix}${ranlib_default} -D"
4222 else
4223     ranlib_default="${cross_prefix}${ranlib_default}"
4224 fi
4225 strip_default="${cross_prefix}${strip_default}"
4226 windres_default="${cross_prefix}${windres_default}"
4227
4228 sysinclude_default="${sysroot}/usr/include"
4229
4230 if enabled cuda_sdk; then
4231     warn "Option --enable-cuda-sdk is deprecated. Use --enable-cuda-nvcc instead."
4232     enable cuda_nvcc
4233 fi
4234
4235 if enabled cuda_nvcc; then
4236     nvcc_default="nvcc"
4237     nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
4238 else
4239     nvcc_default="clang"
4240     nvccflags_default="--cuda-gpu-arch=sm_30 -O2"
4241     NVCC_C=""
4242 fi
4243
4244 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
4245     target_exec x86asmexe nvcc
4246 enabled cross_compile || host_cc_default=$cc
4247 set_default host_cc
4248
4249 pkg_config_fail_message=""
4250 if ! $pkg_config --version >/dev/null 2>&1; then
4251     warn "$pkg_config not found, library detection may fail."
4252     pkg_config=false
4253 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
4254     pkg_config_fail_message="
4255 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
4256 fi
4257
4258 if test $doxygen != $doxygen_default && \
4259   ! $doxygen --version >/dev/null 2>&1; then
4260     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
4261 fi
4262
4263 exesuf() {
4264     case $1 in
4265         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
4266     esac
4267 }
4268
4269 EXESUF=$(exesuf $target_os)
4270 HOSTEXESUF=$(exesuf $host_os)
4271
4272 # set temporary file name
4273 : ${TMPDIR:=$TEMPDIR}
4274 : ${TMPDIR:=$TMP}
4275 : ${TMPDIR:=/tmp}
4276
4277 if [ -n "$tempprefix" ] ; then
4278     mktemp(){
4279         tmpname="$tempprefix.${HOSTNAME}.${UID}"
4280         echo "$tmpname"
4281         mkdir "$tmpname"
4282     }
4283 elif ! test_cmd mktemp -u XXXXXX; then
4284     # simple replacement for missing mktemp
4285     # NOT SAFE FOR GENERAL USE
4286     mktemp(){
4287         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
4288         echo "$tmpname"
4289         mkdir "$tmpname"
4290     }
4291 fi
4292
4293 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
4294     die "Unable to create temporary directory in $TMPDIR."
4295
4296 tmpfile(){
4297     tmp="${FFTMPDIR}/test"$2
4298     (set -C; exec > $tmp) 2> /dev/null ||
4299         die "Unable to create temporary file in $FFTMPDIR."
4300     eval $1=$tmp
4301 }
4302
4303 trap 'rm -rf -- "$FFTMPDIR"' EXIT
4304 trap 'exit 2' INT
4305
4306 tmpfile TMPASM .asm
4307 tmpfile TMPC   .c
4308 tmpfile TMPCPP .cpp
4309 tmpfile TMPE   $EXESUF
4310 tmpfile TMPH   .h
4311 tmpfile TMPM   .m
4312 tmpfile TMPCU  .cu
4313 tmpfile TMPO   .o
4314 tmpfile TMPS   .S
4315 tmpfile TMPSH  .sh
4316 tmpfile TMPV   .ver
4317
4318 unset -f mktemp
4319
4320 chmod +x $TMPE
4321
4322 # make sure we can execute files in $TMPDIR
4323 cat > $TMPSH 2>> $logfile <<EOF
4324 #! /bin/sh
4325 EOF
4326 chmod +x $TMPSH >> $logfile 2>&1
4327 if ! $TMPSH >> $logfile 2>&1; then
4328     cat <<EOF
4329 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
4330 variable to another directory and make sure that it is not mounted noexec.
4331 EOF
4332     die "Sanity test failed."
4333 fi
4334
4335 armasm_flags(){
4336     for flag; do
4337         case $flag in
4338             # Filter out MSVC cl.exe options from cflags that shouldn't
4339             # be passed to gas-preprocessor
4340             -M[TD]*)                                            ;;
4341             *)                  echo $flag                      ;;
4342         esac
4343    done
4344 }
4345
4346 cparser_flags(){
4347     for flag; do
4348         case $flag in
4349             -Wno-switch)             echo -Wno-switch-enum ;;
4350             -Wno-format-zero-length) ;;
4351             -Wdisabled-optimization) ;;
4352             -Wno-pointer-sign)       echo -Wno-other ;;
4353             *)                       echo $flag ;;
4354         esac
4355     done
4356 }
4357
4358 msvc_common_flags(){
4359     for flag; do
4360         case $flag in
4361             # In addition to specifying certain flags under the compiler
4362             # specific filters, they must be specified here as well or else the
4363             # generic catch all at the bottom will print the original flag.
4364             -Wall)                ;;
4365             -Wextra)              ;;
4366             -std=c99)             ;;
4367             # Common flags
4368             -fomit-frame-pointer) ;;
4369             -g)                   echo -Z7 ;;
4370             -fno-math-errno)      ;;
4371             -fno-common)          ;;
4372             -fno-signed-zeros)    ;;
4373             -fPIC)                ;;
4374             -mthumb)              ;;
4375             -march=*)             ;;
4376             -lz)                  echo zlib.lib ;;
4377             -lx264)               echo libx264.lib ;;
4378             -lstdc++)             ;;
4379             -l*)                  echo ${flag#-l}.lib ;;
4380             -LARGEADDRESSAWARE)   echo $flag ;;
4381             -L*)                  echo -libpath:${flag#-L} ;;
4382             *)                    echo $flag ;;
4383         esac
4384     done
4385 }
4386
4387 msvc_flags(){
4388     msvc_common_flags "$@"
4389     for flag; do
4390         case $flag in
4391             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4392                                        -wd4554 ;;
4393             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4394                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4395                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4396                                        -wd4307 \
4397                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4398         esac
4399     done
4400 }
4401
4402 icl_flags(){
4403     msvc_common_flags "$@"
4404     for flag; do
4405         case $flag in
4406             # Despite what Intel's documentation says -Wall, which is supported
4407             # on Windows, does enable remarks so disable them here.
4408             -Wall)                echo $flag -Qdiag-disable:remark ;;
4409             -std=c99)             echo -Qstd=c99 ;;
4410             -flto)                echo -ipo ;;
4411         esac
4412     done
4413 }
4414
4415 icc_flags(){
4416     for flag; do
4417         case $flag in
4418             -flto)                echo -ipo ;;
4419             *)                    echo $flag ;;
4420         esac
4421     done
4422 }
4423
4424 suncc_flags(){
4425     for flag; do
4426         case $flag in
4427             -march=*|-mcpu=*)
4428                 case "${flag#*=}" in
4429                     native)                   echo -xtarget=native       ;;
4430                     v9|niagara)               echo -xarch=sparc          ;;
4431                     ultrasparc)               echo -xarch=sparcvis       ;;
4432                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4433                     i586|pentium)             echo -xchip=pentium        ;;
4434                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4435                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4436                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4437                     pentium4*)          echo -xtarget=pentium4           ;;
4438                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4439                     *-sse3)             echo -xarch=sse3                 ;;
4440                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4441                     bonnell)                   echo -xarch=ssse3         ;;
4442                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4443                     westmere)                  echo -xtarget=westmere    ;;
4444                     silvermont)                echo -xarch=sse4_2        ;;
4445                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4446                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4447                                                echo -xarch=avx           ;;
4448                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4449                     btver1)                    echo -xarch=amdsse4a      ;;
4450                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4451                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4452                     k8|opteron|athlon64|athlon-fx)
4453                                                echo -xarch=sse2a         ;;
4454                     athlon*)                   echo -xarch=pentium_proa  ;;
4455                 esac
4456                 ;;
4457             -std=c99)             echo -xc99              ;;
4458             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4459             -fPIC)                echo -KPIC -xcode=pic32 ;;
4460             -W*,*)                echo $flag              ;;
4461             -f*-*|-W*|-mimpure-text)                      ;;
4462             -shared)              echo -G                 ;;
4463             *)                    echo $flag              ;;
4464         esac
4465     done
4466 }
4467
4468 probe_cc(){
4469     pfx=$1
4470     _cc=$2
4471     first=$3
4472
4473     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4474     unset _ld_o _ldflags _ld_lib _ld_path
4475     unset _depflags _DEPCMD _DEPFLAGS
4476     _flags_filter=echo
4477
4478     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4479         true # no-op to avoid reading stdin in following checks
4480     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4481         _type=llvm_gcc
4482         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4483         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4484         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4485         _cflags_speed='-O3'
4486         _cflags_size='-Os'
4487     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4488         _type=gcc
4489         gcc_version=$($_cc --version | head -n1)
4490         gcc_basever=$($_cc -dumpversion)
4491         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4492         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4493         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4494         case $gcc_basever in
4495             2) ;;
4496             2.*) ;;
4497             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4498         esac
4499         if [ "$first" = true ]; then
4500             case $gcc_basever in
4501                 4.2*)
4502                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4503             esac
4504         fi
4505         _cflags_speed='-O3'
4506         _cflags_size='-Os'
4507     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4508         _type=icc
4509         _ident=$($_cc --version | head -n1)
4510         _depflags='-MMD'
4511         _cflags_speed='-O3'
4512         _cflags_size='-Os'
4513         _cflags_noopt='-O1'
4514         _flags_filter=icc_flags
4515     elif $_cc -v 2>&1 | grep -q xlc; then
4516         _type=xlc
4517         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4518         _cflags_speed='-O5'
4519         _cflags_size='-O5 -qcompact'
4520     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4521         test -d "$sysroot" || die "No valid sysroot specified."
4522         _type=armcc
4523         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4524         armcc_conf="$PWD/armcc.conf"
4525         $_cc --arm_linux_configure                 \
4526              --arm_linux_config_file="$armcc_conf" \
4527              --configure_sysroot="$sysroot"        \
4528              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4529              die "Error creating armcc configuration file."
4530         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4531         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4532         as_default="${cross_prefix}gcc"
4533         _depflags='-MMD'
4534         _cflags_speed='-O3'
4535         _cflags_size='-Os'
4536     elif $_cc -v 2>&1 | grep -q clang && ! $_cc -? > /dev/null 2>&1; then
4537         _type=clang
4538         _ident=$($_cc --version 2>/dev/null | head -n1)
4539         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4540         _cflags_speed='-O3'
4541         _cflags_size='-Oz'
4542     elif $_cc -V 2>&1 | grep -q Sun; then
4543         _type=suncc
4544         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4545         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4546         _DEPFLAGS='-xM1 -xc99'
4547         _ldflags='-std=c99'
4548         _cflags_speed='-O5'
4549         _cflags_size='-O5 -xspace'
4550         _flags_filter=suncc_flags
4551     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4552         _type=pathscale
4553         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4554         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4555         _cflags_speed='-O2'
4556         _cflags_size='-Os'
4557         _flags_filter='filter_out -Wdisabled-optimization'
4558     elif $_cc -v 2>&1 | grep -q Open64; then
4559         _type=open64
4560         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4561         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4562         _cflags_speed='-O2'
4563         _cflags_size='-Os'
4564         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4565     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4566         _type=armasm
4567         _ident=$($_cc | head -n1)
4568         # 4509: "This form of conditional instruction is deprecated"
4569         _flags="-nologo -ignore 4509"
4570         _flags_filter=armasm_flags
4571     elif $_cc 2>&1 | grep -q Intel; then
4572         _type=icl
4573         _ident=$($_cc 2>&1 | head -n1)
4574         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4575         # Not only is O3 broken on 13.x+ but it is slower on all previous
4576         # versions (tested) as well.
4577         _cflags_speed="-O2"
4578         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4579         if $_cc 2>&1 | grep -q Linker; then
4580             _ld_o='-out:$@'
4581         else
4582             _ld_o='-Fe$@'
4583         fi
4584         _cc_o='-Fo$@'
4585         _cc_e='-P'
4586         _flags_filter=icl_flags
4587         _ld_lib='lib%.a'
4588         _ld_path='-libpath:'
4589         # -Qdiag-error to make icl error when seeing certain unknown arguments
4590         _flags='-nologo -Qdiag-error:4044,10157'
4591         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4592         # with MSVC which enables it by default.
4593         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4594         disable stripping
4595     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4596         # lld can emulate multiple different linkers; in ms link.exe mode,
4597         # the -? parameter gives the help output which contains an identifyable
4598         # string, while it gives an error in other modes.
4599         _type=lld-link
4600         # The link.exe mode doesn't have a switch for getting the version,
4601         # but we can force it back to gnu mode and get the version from there.
4602         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4603         _ld_o='-out:$@'
4604         _flags_filter=msvc_flags
4605         _ld_lib='lib%.a'
4606         _ld_path='-libpath:'
4607     elif $_cc -nologo- 2>&1 | grep -q Microsoft || { $_cc -v 2>&1 | grep -q clang && $_cc -? > /dev/null 2>&1; }; then
4608         _type=msvc
4609         _ident=$($_cc 2>&1 | head -n1 | tr -d '\r')
4610         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4611         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4612         _cflags_speed="-O2"
4613         _cflags_size="-O1"
4614         _cflags_noopt="-O1"
4615         if $_cc -nologo- 2>&1 | grep -q Linker; then
4616             _ld_o='-out:$@'
4617         else
4618             _ld_o='-Fe$@'
4619         fi
4620         _cc_o='-Fo$@'
4621         _cc_e='-P -Fi$@'
4622         _flags_filter=msvc_flags
4623         _ld_lib='lib%.a'
4624         _ld_path='-libpath:'
4625         _flags='-nologo'
4626         disable stripping
4627     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4628         _type=cparser
4629         _ident=$($_cc --version | head -n1)
4630         _depflags='-MMD'
4631         _cflags_speed='-O4'
4632         _cflags_size='-O2'
4633         _flags_filter=cparser_flags
4634     fi
4635
4636     eval ${pfx}_type=\$_type
4637     eval ${pfx}_ident=\$_ident
4638 }
4639
4640 set_ccvars(){
4641     eval ${1}_C=\${_cc_c-\${${1}_C}}
4642     eval ${1}_E=\${_cc_e-\${${1}_E}}
4643     eval ${1}_O=\${_cc_o-\${${1}_O}}
4644
4645     if [ -n "$_depflags" ]; then
4646         eval ${1}_DEPFLAGS=\$_depflags
4647     else
4648         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4649         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4650         eval DEP${1}FLAGS=\$_flags
4651     fi
4652 }
4653
4654 probe_cc cc "$cc" "true"
4655 cflags_filter=$_flags_filter
4656 cflags_speed=$_cflags_speed
4657 cflags_size=$_cflags_size
4658 cflags_noopt=$_cflags_noopt
4659 add_cflags $_flags $_cflags
4660 cc_ldflags=$_ldflags
4661 set_ccvars CC
4662 set_ccvars CXX
4663
4664 probe_cc hostcc "$host_cc"
4665 host_cflags_filter=$_flags_filter
4666 host_cflags_speed=$_cflags_speed
4667 add_host_cflags  $_flags $_cflags
4668 set_ccvars HOSTCC
4669
4670 test -n "$cc_type" && enable $cc_type ||
4671     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4672
4673 : ${as_default:=$cc}
4674 : ${objcc_default:=$cc}
4675 : ${dep_cc_default:=$cc}
4676 : ${ld_default:=$cc}
4677 : ${host_ld_default:=$host_cc}
4678 set_default ar as objcc dep_cc ld ln_s host_ld windres
4679
4680 probe_cc as "$as"
4681 asflags_filter=$_flags_filter
4682 add_asflags $_flags $_cflags
4683 set_ccvars AS
4684
4685 probe_cc objcc "$objcc"
4686 objcflags_filter=$_flags_filter
4687 add_objcflags $_flags $_cflags
4688 set_ccvars OBJC
4689
4690 probe_cc ld "$ld"
4691 ldflags_filter=$_flags_filter
4692 add_ldflags $_flags $_ldflags
4693 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4694 LD_O=${_ld_o-$LD_O}
4695 LD_LIB=${_ld_lib-$LD_LIB}
4696 LD_PATH=${_ld_path-$LD_PATH}
4697
4698 probe_cc hostld "$host_ld"
4699 host_ldflags_filter=$_flags_filter
4700 add_host_ldflags $_flags $_ldflags
4701 HOSTLD_O=${_ld_o-$HOSTLD_O}
4702
4703 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4704     probe_cc depcc "$dep_cc"
4705     CCDEP=${_DEPCMD:-$DEPCMD}
4706     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4707     DEPCCFLAGS=$_flags
4708 fi
4709
4710 if $ar 2>&1 | grep -q Microsoft; then
4711     arflags="-nologo"
4712     ar_o='-out:$@'
4713 elif $ar 2>&1 | grep -q "\[D\] "; then
4714     arflags="rcD"
4715     ar_o='$@'
4716 else
4717     arflags="rc"
4718     ar_o='$@'
4719 fi
4720
4721 add_cflags $extra_cflags
4722 add_cxxflags $extra_cxxflags
4723 add_objcflags $extra_objcflags
4724 add_asflags $extra_cflags
4725
4726 if test -n "$sysroot"; then
4727     case "$cc_type" in
4728         gcc|llvm_gcc|clang)
4729             add_cppflags --sysroot="$sysroot"
4730             add_ldflags --sysroot="$sysroot"
4731         ;;
4732     esac
4733 fi
4734
4735 if test "$cpu" = host; then
4736     enabled cross_compile &&
4737         die "--cpu=host makes no sense when cross-compiling."
4738
4739     case "$cc_type" in
4740         gcc|llvm_gcc)
4741             check_native(){
4742                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4743                 sed -n "/cc1.*$1=/{
4744                             s/.*$1=\\([^ ]*\\).*/\\1/
4745                             p
4746                             q
4747                         }" $TMPE
4748             }
4749             cpu=$(check_native -march || check_native -mcpu)
4750         ;;
4751         clang)
4752             check_native(){
4753                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4754                 sed -n "/cc1.*-target-cpu /{
4755                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4756                             p
4757                             q
4758                         }" $TMPE
4759             }
4760             cpu=$(check_native -march)
4761         ;;
4762     esac
4763
4764     test "${cpu:-host}" = host &&
4765         die "--cpu=host not supported with compiler $cc"
4766 fi
4767
4768 # Deal with common $arch aliases
4769 case "$arch" in
4770     aarch64|arm64)
4771         arch="aarch64"
4772     ;;
4773     arm*|iPad*|iPhone*)
4774         arch="arm"
4775     ;;
4776     mips*|IP*)
4777         case "$arch" in
4778         *el)
4779             add_cppflags -EL
4780             add_ldflags -EL
4781         ;;
4782         *eb)
4783             add_cppflags -EB
4784             add_ldflags -EB
4785         ;;
4786         esac
4787         arch="mips"
4788     ;;
4789     parisc*|hppa*)
4790         arch="parisc"
4791     ;;
4792     "Power Macintosh"|ppc*|powerpc*)
4793         arch="ppc"
4794     ;;
4795     s390|s390x)
4796         arch="s390"
4797     ;;
4798     sh4|sh)
4799         arch="sh4"
4800     ;;
4801     sun4*|sparc*)
4802         arch="sparc"
4803     ;;
4804     tilegx|tile-gx)
4805         arch="tilegx"
4806     ;;
4807     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4808         arch="x86"
4809     ;;
4810 esac
4811
4812 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4813 enable $arch
4814
4815 # Add processor-specific flags
4816 if enabled aarch64; then
4817
4818     case $cpu in
4819         armv*)
4820             cpuflags="-march=$cpu"
4821         ;;
4822         *)
4823             cpuflags="-mcpu=$cpu"
4824         ;;
4825     esac
4826
4827 elif enabled alpha; then
4828
4829     cpuflags="-mcpu=$cpu"
4830
4831 elif enabled arm; then
4832
4833     check_arm_arch() {
4834         test_cpp_condition stddef.h \
4835             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4836             $cpuflags
4837     }
4838
4839     probe_arm_arch() {
4840         if   check_arm_arch 4;        then echo armv4
4841         elif check_arm_arch 4T;       then echo armv4t
4842         elif check_arm_arch 5;        then echo armv5
4843         elif check_arm_arch 5E;       then echo armv5e
4844         elif check_arm_arch 5T;       then echo armv5t
4845         elif check_arm_arch 5TE;      then echo armv5te
4846         elif check_arm_arch 5TEJ;     then echo armv5te
4847         elif check_arm_arch 6;        then echo armv6
4848         elif check_arm_arch 6J;       then echo armv6j
4849         elif check_arm_arch 6K;       then echo armv6k
4850         elif check_arm_arch 6Z;       then echo armv6z
4851         elif check_arm_arch 6KZ;      then echo armv6zk
4852         elif check_arm_arch 6ZK;      then echo armv6zk
4853         elif check_arm_arch 6T2;      then echo armv6t2
4854         elif check_arm_arch 7;        then echo armv7
4855         elif check_arm_arch 7A  7_A;  then echo armv7-a
4856         elif check_arm_arch 7S;       then echo armv7-a
4857         elif check_arm_arch 7R  7_R;  then echo armv7-r
4858         elif check_arm_arch 7M  7_M;  then echo armv7-m
4859         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4860         elif check_arm_arch 8A  8_A;  then echo armv8-a
4861         fi
4862     }
4863
4864     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4865
4866     case $cpu in
4867         armv*)
4868             cpuflags="-march=$cpu"
4869             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4870         ;;
4871         *)
4872             cpuflags="-mcpu=$cpu"
4873             case $cpu in
4874                 cortex-a*)                               subarch=armv7a  ;;
4875                 cortex-r*)                               subarch=armv7r  ;;
4876                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4877                 arm11*)                                  subarch=armv6   ;;
4878                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4879                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4880                 *)                             subarch=$(probe_arm_arch) ;;
4881             esac
4882         ;;
4883     esac
4884
4885     case "$subarch" in
4886         armv5t*)    enable fast_clz                ;;
4887         armv[6-8]*)
4888             enable fast_clz
4889             disabled fast_unaligned || enable fast_unaligned
4890             ;;
4891     esac
4892
4893 elif enabled avr32; then
4894
4895     case $cpu in
4896         ap7[02]0[0-2])
4897             subarch="avr32_ap"
4898             cpuflags="-mpart=$cpu"
4899         ;;
4900         ap)
4901             subarch="avr32_ap"
4902             cpuflags="-march=$cpu"
4903         ;;
4904         uc3[ab]*)
4905             subarch="avr32_uc"
4906             cpuflags="-mcpu=$cpu"
4907         ;;
4908         uc)
4909             subarch="avr32_uc"
4910             cpuflags="-march=$cpu"
4911         ;;
4912     esac
4913
4914 elif enabled bfin; then
4915
4916     cpuflags="-mcpu=$cpu"
4917
4918 elif enabled mips; then
4919
4920     cpuflags="-march=$cpu"
4921
4922     if [ "$cpu" != "generic" ]; then
4923         disable mips32r2
4924         disable mips32r5
4925         disable mips64r2
4926         disable mips32r6
4927         disable mips64r6
4928         disable loongson2
4929         disable loongson3
4930
4931         case $cpu in
4932             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4933                 enable mips32r2
4934                 disable msa
4935             ;;
4936             p5600|i6400|p6600)
4937                 disable mipsdsp
4938                 disable mipsdspr2
4939             ;;
4940             loongson*)
4941                 enable loongson2
4942                 enable loongson3
4943                 enable local_aligned
4944                 enable simd_align_16
4945                 enable fast_64bit
4946                 enable fast_clz
4947                 enable fast_cmov
4948                 enable fast_unaligned
4949                 disable aligned_stack
4950                 disable mipsdsp
4951                 disable mipsdspr2
4952                 # When gcc version less than 5.3.0, add -fno-expensive-optimizations flag.
4953                 if [ $cc == gcc ]; then
4954                     gcc_version=$(gcc -dumpversion)
4955                     if [ "$(echo "$gcc_version 5.3.0" | tr " " "\n" | sort -rV | head -n 1)" == "$gcc_version" ]; then
4956                         expensive_optimization_flag=""
4957                     else
4958                         expensive_optimization_flag="-fno-expensive-optimizations"
4959                     fi
4960                 fi
4961                 case $cpu in
4962                     loongson3*)
4963                         cpuflags="-march=loongson3a -mhard-float $expensive_optimization_flag"
4964                     ;;
4965                     loongson2e)
4966                         cpuflags="-march=loongson2e -mhard-float $expensive_optimization_flag"
4967                     ;;
4968                     loongson2f)
4969                         cpuflags="-march=loongson2f -mhard-float $expensive_optimization_flag"
4970                     ;;
4971                 esac
4972             ;;
4973             *)
4974                 # Unknown CPU. Disable everything.
4975                 warn "unknown CPU. Disabling all MIPS optimizations."
4976                 disable mipsfpu
4977                 disable mipsdsp
4978                 disable mipsdspr2
4979                 disable msa
4980                 disable mmi
4981             ;;
4982         esac
4983
4984         case $cpu in
4985             24kc)
4986                 disable mipsfpu
4987                 disable mipsdsp
4988                 disable mipsdspr2
4989             ;;
4990             24kf*)
4991                 disable mipsdsp
4992                 disable mipsdspr2
4993             ;;
4994             24kec|34kc|1004kc)
4995                 disable mipsfpu
4996                 disable mipsdspr2
4997             ;;
4998             24kef*|34kf*|1004kf*)
4999                 disable mipsdspr2
5000             ;;
5001             74kc)
5002                 disable mipsfpu
5003             ;;
5004             p5600)
5005                 enable mips32r5
5006                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
5007             ;;
5008             i6400)
5009                 enable mips64r6
5010                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
5011             ;;
5012             p6600)
5013                 enable mips64r6
5014                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
5015             ;;
5016         esac
5017     else
5018         # We do not disable anything. Is up to the user to disable the unwanted features.
5019         warn 'generic cpu selected'
5020     fi
5021
5022 elif enabled ppc; then
5023
5024     disable ldbrx
5025
5026     case $(tolower $cpu) in
5027         601|ppc601|powerpc601)
5028             cpuflags="-mcpu=601"
5029             disable altivec
5030         ;;
5031         603*|ppc603*|powerpc603*)
5032             cpuflags="-mcpu=603"
5033             disable altivec
5034         ;;
5035         604*|ppc604*|powerpc604*)
5036             cpuflags="-mcpu=604"
5037             disable altivec
5038         ;;
5039         g3|75*|ppc75*|powerpc75*)
5040             cpuflags="-mcpu=750"
5041             disable altivec
5042         ;;
5043         g4|745*|ppc745*|powerpc745*)
5044             cpuflags="-mcpu=7450"
5045             disable vsx
5046         ;;
5047         74*|ppc74*|powerpc74*)
5048             cpuflags="-mcpu=7400"
5049             disable vsx
5050         ;;
5051         g5|970|ppc970|powerpc970)
5052             cpuflags="-mcpu=970"
5053             disable vsx
5054         ;;
5055         power[3-6]*)
5056             cpuflags="-mcpu=$cpu"
5057             disable vsx
5058         ;;
5059         power[7-8]*)
5060             cpuflags="-mcpu=$cpu"
5061         ;;
5062         cell)
5063             cpuflags="-mcpu=cell"
5064             enable ldbrx
5065             disable vsx
5066         ;;
5067         e500mc)
5068             cpuflags="-mcpu=e500mc"
5069             disable altivec
5070         ;;
5071         e500v2)
5072             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
5073             disable altivec
5074             disable dcbzl
5075         ;;
5076         e500)
5077             cpuflags="-mcpu=8540 -mhard-float"
5078             disable altivec
5079             disable dcbzl
5080         ;;
5081     esac
5082
5083 elif enabled sparc; then
5084
5085     case $cpu in
5086         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
5087             cpuflags="-mcpu=$cpu"
5088         ;;
5089         ultrasparc*|niagara[234])
5090             cpuflags="-mcpu=$cpu"
5091         ;;
5092     esac
5093
5094 elif enabled x86; then
5095
5096     case $cpu in
5097         i[345]86|pentium)
5098             cpuflags="-march=$cpu"
5099             disable i686
5100             disable mmx
5101         ;;
5102         # targets that do NOT support nopl and conditional mov (cmov)
5103         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
5104             cpuflags="-march=$cpu"
5105             disable i686
5106         ;;
5107         # targets that do support nopl and conditional mov (cmov)
5108         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
5109         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
5110         |amdfam10|barcelona|b[dt]ver*|znver*)
5111             cpuflags="-march=$cpu"
5112             enable i686
5113             enable fast_cmov
5114         ;;
5115         # targets that do support conditional mov but on which it's slow
5116         pentium4|pentium4m|prescott|nocona)
5117             cpuflags="-march=$cpu"
5118             enable i686
5119             disable fast_cmov
5120         ;;
5121     esac
5122
5123 fi
5124
5125 if [ "$cpu" != generic ]; then
5126     add_cflags  $cpuflags
5127     add_asflags $cpuflags
5128     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
5129 fi
5130
5131 # compiler sanity check
5132 test_exec <<EOF
5133 int main(void){ return 0; }
5134 EOF
5135 if test "$?" != 0; then
5136     echo "$cc is unable to create an executable file."
5137     if test -z "$cross_prefix" && ! enabled cross_compile ; then
5138         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
5139         echo "Only do this if you know what cross compiling means."
5140     fi
5141     die "C compiler test failed."
5142 fi
5143
5144 add_cppflags -D_ISOC99_SOURCE
5145 add_cxxflags -D__STDC_CONSTANT_MACROS
5146 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
5147
5148 # some compilers silently accept -std=c11, so we also need to check that the
5149 # version macro is defined properly
5150 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
5151     add_cflags -std=c11 ||
5152     check_cflags -std=c99
5153
5154 check_cppflags -D_FILE_OFFSET_BITS=64
5155 check_cppflags -D_LARGEFILE_SOURCE
5156
5157 add_host_cppflags -D_ISOC99_SOURCE
5158 check_host_cflags -std=c99
5159 check_host_cflags -Wall
5160 check_host_cflags $host_cflags_speed
5161
5162 check_64bit(){
5163     arch32=$1
5164     arch64=$2
5165     expr=${3:-'sizeof(void *) > 4'}
5166     test_code cc "" "int test[2*($expr) - 1]" &&
5167         subarch=$arch64 || subarch=$arch32
5168     enable $subarch
5169 }
5170
5171 case "$arch" in
5172     aarch64|alpha|ia64)
5173         enabled shared && enable_weak pic
5174     ;;
5175     mips)
5176         check_64bit mips mips64 '_MIPS_SIM > 1'
5177         enabled shared && enable_weak pic
5178     ;;
5179     parisc)
5180         check_64bit parisc parisc64
5181         enabled shared && enable_weak pic
5182     ;;
5183     ppc)
5184         check_64bit ppc ppc64
5185         enabled shared && enable_weak pic
5186     ;;
5187     s390)
5188         check_64bit s390 s390x
5189         enabled shared && enable_weak pic
5190     ;;
5191     sparc)
5192         check_64bit sparc sparc64
5193         enabled shared && enable_weak pic
5194     ;;
5195     x86)
5196         check_64bit x86_32 x86_64
5197         # Treat x32 as x64 for now. Note it also needs pic if shared
5198         test "$subarch" = "x86_32" && test_cpp_condition stddef.h 'defined(__x86_64__)' &&
5199             subarch=x86_64 && enable x86_64 && disable x86_32
5200         if enabled x86_64; then
5201             enabled shared && enable_weak pic
5202             objformat=elf64
5203         fi
5204     ;;
5205 esac
5206
5207 # OS specific
5208 case $target_os in
5209     aix)
5210         SHFLAGS=-shared
5211         add_cppflags '-I\$(SRC_PATH)/compat/aix'
5212         enabled shared && add_ldflags -Wl,-brtl
5213         arflags='-Xany -r -c'
5214         striptype=""
5215         ;;
5216     android)
5217         disable symver
5218         enable section_data_rel_ro
5219         add_cflags -fPIE
5220         add_ldexeflags -fPIE -pie
5221         SLIB_INSTALL_NAME='$(SLIBNAME)'
5222         SLIB_INSTALL_LINKS=
5223         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
5224         ;;
5225     haiku)
5226         prefix_default="/boot/common"
5227         network_extralibs="-lnetwork"
5228         host_extralibs=
5229         ;;
5230     sunos)
5231         SHFLAGS='-shared -Wl,-h,$$(@F)'
5232         enabled x86 && append SHFLAGS -mimpure-text
5233         network_extralibs="-lsocket -lnsl"
5234         add_cppflags -D__EXTENSIONS__
5235         # When using suncc to build, the Solaris linker will mark
5236         # an executable with each instruction set encountered by
5237         # the Solaris assembler.  As our libraries contain their own
5238         # guards for processor-specific code, instead suppress
5239         # generation of the HWCAPS ELF section on Solaris x86 only.
5240         enabled_all suncc x86 &&
5241             echo "hwcap_1 = OVERRIDE;" > mapfile &&
5242             add_ldflags -Wl,-M,mapfile
5243         nm_default='nm -P -g'
5244         striptype=""
5245         version_script='-M'
5246         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
5247         ;;
5248     netbsd)
5249         disable symver
5250         oss_indev_extralibs="-lossaudio"
5251         oss_outdev_extralibs="-lossaudio"
5252         enabled gcc || check_ldflags -Wl,-zmuldefs
5253         ;;
5254     openbsd|bitrig)
5255         disable symver
5256         striptype=""
5257         SHFLAGS='-shared'
5258         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
5259         SLIB_INSTALL_LINKS=
5260         oss_indev_extralibs="-lossaudio"
5261         oss_outdev_extralibs="-lossaudio"
5262         ;;
5263     dragonfly)
5264         disable symver
5265         ;;
5266     freebsd)
5267         ;;
5268     bsd/os)
5269         add_extralibs -lpoll -lgnugetopt
5270         strip="strip -d"
5271         ;;
5272     darwin)
5273         enabled ppc && add_asflags -force_cpusubtype_ALL
5274         install_name_dir_default='$(SHLIBDIR)'
5275         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
5276         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
5277         strip="${strip} -x"
5278         add_ldflags -Wl,-dynamic,-search_paths_first
5279         check_cflags -Werror=partial-availability
5280         SLIBSUF=".dylib"
5281         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
5282         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
5283         enabled x86_64 && objformat="macho64" || objformat="macho32"
5284         enabled_any pic shared x86_64 ||
5285             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
5286         check_headers dispatch/dispatch.h &&
5287             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
5288         if test -n "$sysroot"; then
5289             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
5290             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
5291         fi
5292         version_script='-exported_symbols_list'
5293         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
5294         ;;
5295     msys*)
5296         die "Native MSYS builds are discouraged, please use the MINGW environment."
5297         ;;
5298     mingw32*|mingw64*)
5299         target_os=mingw32
5300         LIBTARGET=i386
5301         if enabled x86_64; then
5302             LIBTARGET="i386:x86-64"
5303         elif enabled arm; then
5304             LIBTARGET="arm"
5305         elif enabled aarch64; then
5306             LIBTARGET="arm64"
5307         fi
5308         if enabled shared; then
5309             # Cannot build both shared and static libs when using dllimport.
5310             disable static
5311         fi
5312         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5313         enabled x86_32 && check_ldflags -Wl,--large-address-aware
5314         shlibdir_default="$bindir_default"
5315         SLIBPREF=""
5316         SLIBSUF=".dll"
5317         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5318         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5319         if test_cmd lib.exe -list; then
5320             SLIB_EXTRA_CMD=-'lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5321             if enabled x86_64; then
5322                 LIBTARGET=x64
5323             fi
5324         else
5325             SLIB_EXTRA_CMD=-'$(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
5326         fi
5327         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5328         SLIB_INSTALL_LINKS=
5329         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5330         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5331         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5332         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--disable-auto-image-base $$(@:$(SLIBSUF)=.def)'
5333         enabled x86_64 && objformat="win64" || objformat="win32"
5334         dlltool="${cross_prefix}dlltool"
5335         ranlib=:
5336         enable dos_paths
5337         check_ldflags -Wl,--nxcompat,--dynamicbase
5338         # Lets work around some stupidity in binutils.
5339         # ld will strip relocations from executables even though we need them
5340         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
5341         # however ld then forgets what the entry point should be (oops) so we
5342         # have to manually (re)set it.
5343         if enabled x86_32; then
5344             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
5345         elif enabled x86_64; then
5346             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
5347             check_ldflags -Wl,--high-entropy-va # binutils 2.25
5348             # Set image base >4GB for extra entropy with HEASLR
5349             add_ldexeflags -Wl,--image-base,0x140000000
5350             append SHFLAGS -Wl,--image-base,0x180000000
5351         fi
5352         ;;
5353     win32|win64)
5354         disable symver
5355         if enabled shared; then
5356             # Link to the import library instead of the normal static library
5357             # for shared libs.
5358             LD_LIB='%.lib'
5359             # Cannot build both shared and static libs with MSVC or icl.
5360             disable static
5361         fi
5362         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
5363         shlibdir_default="$bindir_default"
5364         SLIBPREF=""
5365         SLIBSUF=".dll"
5366         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5367         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5368         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5369         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5370         SLIB_INSTALL_LINKS=
5371         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5372         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5373         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5374         enabled x86_64 && objformat="win64" || objformat="win32"
5375         ranlib=:
5376         enable dos_paths
5377         ;;
5378     cygwin*)
5379         target_os=cygwin
5380         shlibdir_default="$bindir_default"
5381         SLIBPREF="cyg"
5382         SLIBSUF=".dll"
5383         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5384         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5385         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5386         SLIB_INSTALL_LINKS=
5387         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5388         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5389         enabled x86_64 && objformat="win64" || objformat="win32"
5390         enable dos_paths
5391         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5392         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5393         ;;
5394     *-dos|freedos|opendos)
5395         network_extralibs="-lsocket"
5396         objformat="coff"
5397         enable dos_paths
5398         ;;
5399     linux)
5400         enable section_data_rel_ro
5401         enabled_any arm aarch64 && enable_weak linux_perf
5402         ;;
5403     irix*)
5404         target_os=irix
5405         ranlib="echo ignoring ranlib"
5406         ;;
5407     os/2*)
5408         strip="lxlite -CS"
5409         striptype=""
5410         objformat="aout"
5411         add_cppflags -D_GNU_SOURCE
5412         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5413         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5414         LIBSUF="_s.a"
5415         SLIBPREF=""
5416         SLIBSUF=".dll"
5417         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5418         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5419         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5420             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5421             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5422             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5423             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5424         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5425             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5426         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5427         SLIB_INSTALL_LINKS=
5428         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5429         enable dos_paths
5430         enable_weak os2threads
5431         ;;
5432     gnu/kfreebsd)
5433         add_cppflags -D_BSD_SOURCE
5434         ;;
5435     gnu)
5436         ;;
5437     qnx)
5438         add_cppflags -D_QNX_SOURCE
5439         network_extralibs="-lsocket"
5440         ;;
5441     symbian)
5442         SLIBSUF=".dll"
5443         enable dos_paths
5444         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5445         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5446         add_ldflags -Wl,--target1-abs,--no-undefined \
5447                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5448                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5449         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5450                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5451                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5452         ;;
5453     minix)
5454         ;;
5455     none)
5456         ;;
5457     *)
5458         die "Unknown OS '$target_os'."
5459         ;;
5460 esac
5461
5462 # test if creating links works
5463 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5464 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5465 mkdir "$link_dest"
5466 $ln_s "$link_dest" "$link_name"
5467 touch "$link_dest/test_file"
5468 if [ "$source_path" != "." ] && [ "$source_path" != "src" ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5469     # create link to source path
5470     [ -e src ] && rm src
5471     $ln_s "$source_path" src
5472     source_link=src
5473 else
5474     # creating directory links doesn't work
5475     # fall back to using the full source path
5476     source_link="$source_path"
5477 fi
5478 # cleanup
5479 rm -r "$link_dest"
5480 rm -r "$link_name"
5481
5482 # determine libc flavour
5483
5484 probe_libc(){
5485     pfx=$1
5486     pfx_no_=${pfx%_}
5487     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5488     if test_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5489         eval ${pfx}libc_type=uclibc
5490         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5491     elif test_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5492         eval ${pfx}libc_type=glibc
5493         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5494     # MinGW headers can be installed on Cygwin, so check for newlib first.
5495     elif test_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5496         eval ${pfx}libc_type=newlib
5497         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5498     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5499     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5500         eval ${pfx}libc_type=mingw64
5501         if test_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5502             add_compat msvcrt/snprintf.o
5503             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5504         fi
5505         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5506         eval test \$${pfx_no_}cc_type = "gcc" &&
5507             add_${pfx}cppflags -D__printf__=__gnu_printf__
5508         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5509             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5510         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5511     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5512          test_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5513         eval ${pfx}libc_type=mingw32
5514         test_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5515             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5516             die "ERROR: MinGW32 runtime version must be >= 3.15."
5517         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5518         test_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5519             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5520         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5521             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5522         eval test \$${pfx_no_}cc_type = "gcc" &&
5523             add_${pfx}cppflags -D__printf__=__gnu_printf__
5524         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5525     elif test_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5526         eval ${pfx}libc_type=msvcrt
5527         if test_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5528             if [ "$pfx" = host_ ]; then
5529                 add_host_cppflags -Dsnprintf=_snprintf
5530             else
5531                 add_compat strtod.o strtod=avpriv_strtod
5532                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5533                                              _snprintf=avpriv_snprintf  \
5534                                              vsnprintf=avpriv_vsnprintf
5535             fi
5536         fi
5537         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5538         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5539         # 0x601 by default unless something else is set by the user.
5540         # This can easily lead to us detecting functions only present
5541         # in such new versions and producing binaries requiring windows 7.0.
5542         # Therefore explicitly set the default to Vista unless the user has
5543         # set something else on the command line.
5544         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5545         # family. For these cases, configure is free to use any functions
5546         # found in the SDK headers by default. (Alternatively, we could force
5547         # _WIN32_WINNT to 0x0602 in that case.)
5548         test_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5549             { test_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0600; }
5550 #ifdef WINAPI_FAMILY
5551 #include <winapifamily.h>
5552 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5553 #error not desktop
5554 #endif
5555 #endif
5556 EOF
5557         if [ "$pfx" = "" ]; then
5558             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5559             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5560         fi
5561     elif test_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5562         eval ${pfx}libc_type=klibc
5563     elif test_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5564         eval ${pfx}libc_type=bionic
5565     elif test_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5566         eval ${pfx}libc_type=solaris
5567         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5568     elif test_${pfx}cpp_condition sys/version.h "defined __DJGPP__"; then
5569         eval ${pfx}libc_type=djgpp
5570         add_cppflags -U__STRICT_ANSI__
5571         add_cflags "-include $source_path/compat/djgpp/math.h"
5572         add_compat djgpp/math.o
5573     fi
5574     test_${pfx}cc <<EOF
5575 #include <time.h>
5576 void *v = localtime_r;
5577 EOF
5578 test "$?" != 0 && test_${pfx}cc -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 <<EOF && add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5579 #include <time.h>
5580 void *v = localtime_r;
5581 EOF
5582
5583     eval test -n "\${${pfx}libc_type}" && enable ${pfx}libc_${libc_type}
5584 }
5585
5586 probe_libc
5587 probe_libc host_
5588
5589 # hacks for compiler/libc/os combinations
5590
5591 case $libc_type in
5592     bionic)
5593         add_compat strtod.o strtod=avpriv_strtod
5594         ;;
5595 esac
5596
5597 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5598     add_cppflags '-I\$(SRC_PATH)/compat/float'
5599
5600 test_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5601
5602 set_default libdir
5603 : ${shlibdir_default:="$libdir"}
5604 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5605
5606 set_default $PATHS_LIST
5607 set_default nm
5608
5609 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5610
5611 enable_weak_pic() {
5612     disabled pic && return
5613     enable pic
5614     add_cppflags -DPIC
5615     case "$target_os" in
5616     mingw*|cygwin*|win*)
5617         ;;
5618     *)
5619         add_cflags -fPIC
5620         add_asflags -fPIC
5621         ;;
5622     esac
5623 }
5624
5625 enabled pic && enable_weak_pic
5626
5627 test_cc <<EOF || die "Symbol mangling check failed."
5628 int ff_extern;
5629 EOF
5630 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5631 extern_prefix=${sym%%ff_extern*}
5632
5633 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
5634
5635 for restrict_keyword in restrict __restrict__ __restrict ""; do
5636     test_code cc "" "char * $restrict_keyword p" && break
5637 done
5638
5639 check_cc pragma_deprecated "" '_Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"")'
5640
5641 # The global variable ensures the bits appear unchanged in the object file.
5642 test_cc <<EOF || die "endian test failed"
5643 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5644 EOF
5645 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5646
5647 check_cc const_nan math.h "struct { double d; } static const bar[] = { { NAN } }"
5648
5649 if ! enabled ppc64 || enabled bigendian; then
5650     disable vsx
5651 fi
5652
5653 check_gas() {
5654     log "check_gas using '$as' as AS"
5655     # :vararg is used on aarch64, arm and ppc altivec
5656     check_as vararg "
5657 .macro m n, y:vararg=0
5658 \n: .int \y
5659 .endm
5660 m x" || return 1
5661     # .altmacro is only used in arm asm
5662     ! enabled arm || check_as gnu_as ".altmacro"
5663 }
5664
5665 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5666     nogas=:
5667     enabled_any arm aarch64 && nogas=die
5668     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5669     as_noop=-v
5670
5671     case $as_type in
5672         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5673         gcc)  gaspp_as_type=gas ;;
5674         *)    gaspp_as_type=$as_type ;;
5675     esac
5676
5677     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5678
5679     test "${as#*gas-preprocessor.pl}" != "$as" ||
5680     test_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5681         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5682
5683     if ! check_gas ; then
5684         as=${gas:=$as}
5685         check_gas || \
5686             $nogas "GNU assembler not found, install/update gas-preprocessor"
5687     fi
5688
5689     check_as as_func ".func test
5690                       .endfunc"
5691 fi
5692
5693 check_inline_asm inline_asm_labels '"1:\n"'
5694
5695 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5696
5697 if enabled aarch64; then
5698     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5699     # internal assembler in clang 3.3 does not support this instruction
5700     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5701     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5702
5703     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5704
5705 elif enabled alpha; then
5706
5707     check_cflags -mieee
5708
5709 elif enabled arm; then
5710
5711     enabled msvc && check_cpp_condition thumb stddef.h "defined _M_ARMT"
5712     test_cpp_condition stddef.h "defined __thumb__" && test_cc <<EOF && enable_weak thumb
5713 float func(float a, float b){ return a+b; }
5714 EOF
5715     enabled thumb && check_cflags -mthumb || check_cflags -marm
5716
5717     if check_cpp_condition vfp_args stddef.h "defined __ARM_PCS_VFP"; then
5718         :
5719     elif check_cpp_condition vfp_args stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5720         :
5721     elif ! test_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5722         case "${cross_prefix:-$cc}" in
5723             *hardfloat*) enable vfp_args; fpabi=vfp ;;
5724             *) check_ld "cc" vfp_args <<EOF && fpabi=vfp || fpabi=soft ;;
5725 __asm__ (".eabi_attribute 28, 1");
5726 int main(void) { return 0; }
5727 EOF
5728         esac
5729         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5730     fi
5731
5732     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5733     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5734     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5735     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5736     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5737     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5738     enabled setend  && check_insn setend  'setend be'
5739
5740     [ $target_os = linux ] || [ $target_os = android ] ||
5741         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5742             $ARCH_EXT_LIST_ARM
5743
5744     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5745
5746     check_as as_arch_directive ".arch armv7-a"
5747     check_as as_dn_directive   "ra .dn d0.i16"
5748     check_as as_fpu_directive  ".fpu neon"
5749
5750     # llvm's integrated assembler supports .object_arch from llvm 3.5
5751     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5752         check_as as_object_arch ".object_arch armv4"
5753
5754     # MS armasm fails to assemble our PIC constructs
5755     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5756
5757 elif enabled mips; then
5758
5759     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5760     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5761     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5762
5763     # Enable minimum ISA based on selected options
5764     if enabled mips64; then
5765         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5766         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5767         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5768     else
5769         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5770         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5771         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5772         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5773     fi
5774
5775     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5776     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5777     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_headers msa.h || disable msa
5778     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5779     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5780     enabled msa && enabled msa2 && check_inline_asm_flags msa2 '"nxbits.any.b $w0, $w0"' '-mmsa2' && check_headers msa2.h || disable msa2
5781
5782     if enabled bigendian && enabled msa; then
5783         disable msa
5784     fi
5785
5786 elif enabled parisc; then
5787
5788     if enabled gcc; then
5789         case $($cc -dumpversion) in
5790             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5791         esac
5792     fi
5793
5794 elif enabled ppc; then
5795
5796     enable local_aligned
5797
5798     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5799     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5800     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5801     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5802
5803     if enabled altivec; then
5804         check_cflags -maltivec -mabi=altivec
5805
5806         # check if our compiler supports Motorola AltiVec C API
5807         check_cc altivec altivec.h "vector signed int v1 = (vector signed int) { 0 };
5808                                     vector signed int v2 = (vector signed int) { 1 };
5809                                     v1 = vec_add(v1, v2);"
5810
5811         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5812     fi
5813
5814     if enabled vsx; then
5815         check_cflags -mvsx &&
5816         check_cc vsx altivec.h "int v[4] = { 0 };
5817                                 vector signed int v1 = vec_vsx_ld(0, v);"
5818     fi
5819
5820     if enabled power8; then
5821         check_cpp_condition power8 "altivec.h" "defined(_ARCH_PWR8)"
5822     fi
5823
5824 elif enabled x86; then
5825
5826     check_builtin rdtsc    intrin.h   "__rdtsc()"
5827     check_builtin mm_empty mmintrin.h "_mm_empty()"
5828
5829     enable local_aligned
5830
5831     # check whether EBP is available on x86
5832     # As 'i' is stored on the stack, this program will crash
5833     # if the base pointer is used to access it because the
5834     # base pointer is cleared in the inline assembly code.
5835     check_exec_crash <<EOF && enable ebp_available
5836 volatile int i=0;
5837 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5838 return i;
5839 EOF
5840
5841     # check whether EBX is available on x86
5842     check_inline_asm ebx_available '""::"b"(0)' &&
5843         check_inline_asm ebx_available '"":::"%ebx"'
5844
5845     # check whether xmm clobbers are supported
5846     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5847
5848     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5849         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5850
5851     # check whether binutils is new enough to compile SSSE3/MMXEXT
5852     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5853     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5854
5855     probe_x86asm(){
5856         x86asmexe_probe=$1
5857         if test_cmd $x86asmexe_probe -v; then
5858             x86asmexe=$x86asmexe_probe
5859             x86asm_type=nasm
5860             x86asm_debug="-g -F dwarf"
5861             X86ASMDEP=
5862             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5863         elif test_cmd $x86asmexe_probe --version; then
5864             x86asmexe=$x86asmexe_probe
5865             x86asm_type=yasm
5866             x86asm_debug="-g dwarf2"
5867             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
5868             X86ASM_DEPFLAGS=
5869         fi
5870         check_x86asm x86asm "movbe ecx, [5]"
5871     }
5872
5873     if ! disabled_any asm mmx x86asm; then
5874         disable x86asm
5875         for program in $x86asmexe nasm yasm; do
5876             probe_x86asm $program && break
5877         done
5878         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
5879         X86ASMFLAGS="-f $objformat"
5880         enabled pic               && append X86ASMFLAGS "-DPIC"
5881         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
5882         case "$objformat" in
5883             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
5884         esac
5885
5886         check_x86asm avx512_external "vmovdqa32 [eax]{k1}{z}, zmm0"
5887         check_x86asm avx2_external   "vextracti128 xmm0, ymm0, 0"
5888         check_x86asm xop_external    "vpmacsdd xmm0, xmm1, xmm2, xmm3"
5889         check_x86asm fma4_external   "vfmaddps ymm0, ymm1, ymm2, ymm3"
5890         check_x86asm cpunop          "CPU amdnop"
5891     fi
5892
5893     case "$cpu" in
5894         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5895             disable fast_clz
5896         ;;
5897     esac
5898
5899 fi
5900
5901 check_cc intrinsics_neon arm_neon.h "int16x8_t test = vdupq_n_s16(0)"
5902
5903 check_ldflags -Wl,--as-needed
5904 check_ldflags -Wl,-z,noexecstack
5905
5906 if ! disabled network; then
5907     check_func getaddrinfo $network_extralibs
5908     check_func inet_aton $network_extralibs
5909
5910     check_type netdb.h "struct addrinfo"
5911     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5912     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5913     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5914     check_type poll.h "struct pollfd"
5915     check_type netinet/sctp.h "struct sctp_event_subscribe"
5916     check_struct "sys/socket.h" "struct msghdr" msg_flags
5917     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5918     check_type netinet/in.h "struct sockaddr_in6"
5919     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5920     check_type "sys/types.h sys/socket.h" socklen_t
5921
5922     # Prefer arpa/inet.h over winsock2
5923     if check_headers arpa/inet.h ; then
5924         check_func closesocket
5925     elif check_headers winsock2.h ; then
5926         check_func_headers winsock2.h closesocket -lws2 &&
5927             network_extralibs="-lws2" ||
5928         { check_func_headers winsock2.h closesocket -lws2_32 &&
5929             network_extralibs="-lws2_32"; } || disable winsock2_h network
5930         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5931
5932         check_type ws2tcpip.h socklen_t
5933         check_type ws2tcpip.h "struct addrinfo"
5934         check_type ws2tcpip.h "struct group_source_req"
5935         check_type ws2tcpip.h "struct ip_mreq_source"
5936         check_type ws2tcpip.h "struct ipv6_mreq"
5937         check_type winsock2.h "struct pollfd"
5938         check_struct winsock2.h "struct sockaddr" sa_len
5939         check_type ws2tcpip.h "struct sockaddr_in6"
5940         check_type ws2tcpip.h "struct sockaddr_storage"
5941     else
5942         disable network
5943     fi
5944 fi
5945
5946 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5947 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5948 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5949 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5950 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5951 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5952 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5953
5954 case "$custom_allocator" in
5955     jemalloc)
5956         # jemalloc by default does not use a prefix
5957         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5958     ;;
5959     tcmalloc)
5960         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
5961         malloc_prefix=tc_
5962     ;;
5963 esac
5964
5965 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5966 check_func  ${malloc_prefix}memalign            && enable memalign
5967 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5968
5969 check_func  access
5970 check_func_headers stdlib.h arc4random
5971 check_lib   clock_gettime time.h clock_gettime || check_lib clock_gettime time.h clock_gettime -lrt
5972 check_func  fcntl
5973 check_func  fork
5974 check_func  gethrtime
5975 check_func  getopt
5976 check_func  getrusage
5977 check_func  gettimeofday
5978 check_func  isatty
5979 check_func  mkstemp
5980 check_func  mmap
5981 check_func  mprotect
5982 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5983 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
5984 check_func  sched_getaffinity
5985 check_func  setrlimit
5986 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5987 check_func  strerror_r
5988 check_func  sysconf
5989 check_func  sysctl
5990 check_func  usleep
5991
5992 check_func_headers conio.h kbhit
5993 check_func_headers io.h setmode
5994 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5995 check_func_headers mach/mach_time.h mach_absolute_time
5996 check_func_headers stdlib.h getenv
5997 check_func_headers sys/stat.h lstat
5998
5999 check_func_headers windows.h GetProcessAffinityMask
6000 check_func_headers windows.h GetProcessTimes
6001 check_func_headers windows.h GetSystemTimeAsFileTime
6002 check_func_headers windows.h LoadLibrary
6003 check_func_headers windows.h MapViewOfFile
6004 check_func_headers windows.h PeekNamedPipe
6005 check_func_headers windows.h SetConsoleTextAttribute
6006 check_func_headers windows.h SetConsoleCtrlHandler
6007 check_func_headers windows.h Sleep
6008 check_func_headers windows.h VirtualAlloc
6009 check_func_headers glob.h glob
6010 enabled xlib &&
6011     check_lib xlib "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
6012
6013 check_headers direct.h
6014 check_headers dirent.h
6015 check_headers dxgidebug.h
6016 check_headers dxva.h
6017 check_headers dxva2api.h -D_WIN32_WINNT=0x0600
6018 check_headers io.h
6019 check_headers linux/perf_event.h
6020 check_headers libcrystalhd/libcrystalhd_if.h
6021 check_headers malloc.h
6022 check_headers net/udplite.h
6023 check_headers poll.h
6024 check_headers sys/param.h
6025 check_headers sys/resource.h
6026 check_headers sys/select.h
6027 check_headers sys/time.h
6028 check_headers sys/un.h
6029 check_headers termios.h
6030 check_headers unistd.h
6031 check_headers valgrind/valgrind.h
6032 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
6033 check_headers windows.h
6034 check_headers X11/extensions/XvMClib.h
6035 check_headers asm/types.h
6036
6037 # it seems there are versions of clang in some distros that try to use the
6038 # gcc headers, which explodes for stdatomic
6039 # so we also check that atomics actually work here
6040 check_builtin stdatomic stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0); foo += bar"
6041
6042 check_lib advapi32 "windows.h"            RegCloseKey          -ladvapi32
6043 check_lib bcrypt   "windows.h bcrypt.h"   BCryptGenRandom      -lbcrypt &&
6044     check_cpp_condition bcrypt bcrypt.h "defined BCRYPT_RNG_ALGORITHM"
6045 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
6046 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
6047 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
6048
6049 check_lib android android/native_window.h ANativeWindow_acquire -landroid
6050 check_lib mediandk "stdint.h media/NdkImage.h" AImage_delete -lmediandk
6051 check_lib camera2ndk "stdbool.h stdint.h camera/NdkCameraManager.h" ACameraManager_create -lcamera2ndk
6052
6053 enabled appkit       && check_apple_framework AppKit
6054 enabled audiotoolbox && check_apple_framework AudioToolbox
6055 enabled avfoundation && check_apple_framework AVFoundation
6056 enabled coreimage    && check_apple_framework CoreImage
6057 enabled videotoolbox && check_apple_framework VideoToolbox
6058
6059 check_apple_framework CoreFoundation
6060 check_apple_framework CoreMedia
6061 check_apple_framework CoreVideo
6062
6063 enabled avfoundation && {
6064     disable coregraphics applicationservices
6065     check_lib coregraphics        CoreGraphics/CoreGraphics.h               CGGetActiveDisplayList "-framework CoreGraphics" ||
6066     check_lib applicationservices ApplicationServices/ApplicationServices.h CGGetActiveDisplayList "-framework ApplicationServices"; }
6067
6068 enabled videotoolbox && {
6069     check_lib coreservices CoreServices/CoreServices.h UTGetOSTypeFromString "-framework CoreServices"
6070     check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_HEVC "-framework CoreMedia"
6071     check_func_headers CoreVideo/CVPixelBuffer.h kCVPixelFormatType_420YpCbCr10BiPlanarVideoRange "-framework CoreVideo"
6072 }
6073
6074 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
6075
6076 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
6077 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
6078 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
6079 check_type "windows.h d3d11.h" "ID3D11VideoContext"
6080 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
6081
6082 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
6083
6084 if [ -z "$nvccflags" ]; then
6085     nvccflags=$nvccflags_default
6086 fi
6087
6088 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6089     nvccflags="$nvccflags -m64"
6090 else
6091     nvccflags="$nvccflags -m32"
6092 fi
6093
6094 if enabled cuda_nvcc; then
6095     nvccflags="$nvccflags -ptx"
6096 else
6097     nvccflags="$nvccflags -S -nocudalib -nocudainc --cuda-device-only -include${source_link}/compat/cuda/cuda_runtime.h"
6098     check_nvcc cuda_llvm
6099 fi
6100
6101 if ! disabled ffnvcodec; then
6102     ffnv_hdr_list="ffnvcodec/nvEncodeAPI.h ffnvcodec/dynlink_cuda.h ffnvcodec/dynlink_cuviddec.h ffnvcodec/dynlink_nvcuvid.h"
6103     check_pkg_config ffnvcodec "ffnvcodec >= 9.0.18.0" "$ffnv_hdr_list" "" || \
6104       check_pkg_config ffnvcodec "ffnvcodec >= 8.2.15.8 ffnvcodec < 8.3" "$ffnv_hdr_list" "" || \
6105       check_pkg_config ffnvcodec "ffnvcodec >= 8.1.24.9 ffnvcodec < 8.2" "$ffnv_hdr_list" "" || \
6106       check_pkg_config ffnvcodec "ffnvcodec >= 8.0.14.9 ffnvcodec < 8.1" "$ffnv_hdr_list" ""
6107 fi
6108
6109 check_cpp_condition winrt windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)"
6110
6111 if ! disabled w32threads && ! enabled pthreads; then
6112     check_func_headers "windows.h process.h" _beginthreadex &&
6113         check_type "windows.h" CONDITION_VARIABLE &&
6114         check_type "windows.h" INIT_ONCE &&
6115         enable w32threads || disable w32threads
6116     if ! enabled w32threads && enabled winrt; then
6117         check_func_headers "windows.h" CreateThread &&
6118             enable w32threads || disable w32threads
6119     fi
6120 fi
6121
6122 # check for some common methods of building with pthread support
6123 # do this before the optional library checks as some of them require pthreads
6124 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
6125     if check_lib pthreads pthread.h pthread_join   -pthread &&
6126        check_lib pthreads pthread.h pthread_create -pthread; then
6127         add_cflags -pthread
6128     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
6129          check_lib pthreads pthread.h pthread_create -pthreads; then
6130         add_cflags -pthreads
6131     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
6132          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
6133         add_cflags -ldl -pthread
6134     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
6135          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
6136         :
6137     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
6138          check_lib pthreads pthread.h pthread_create -lpthread; then
6139         :
6140     elif check_func pthread_join && check_func pthread_create; then
6141         enable pthreads
6142     fi
6143     check_cc pthreads "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER"
6144
6145     if enabled pthreads; then
6146         check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
6147         check_func pthread_cancel $pthreads_extralibs
6148     fi
6149 fi
6150
6151 enabled  zlib && { check_pkg_config zlib zlib "zlib.h" zlibVersion ||
6152                    check_lib zlib   zlib.h      zlibVersion    -lz; }
6153 enabled bzlib && check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
6154 enabled  lzma && check_lib lzma   lzma.h lzma_version_number -llzma
6155
6156 # On some systems dynamic loading requires no extra linker flags
6157 check_lib libdl dlfcn.h "dlopen dlsym" || check_lib libdl dlfcn.h "dlopen dlsym" -ldl
6158
6159 check_lib libm math.h sin -lm
6160
6161 atan2f_args=2
6162 copysign_args=2
6163 hypot_args=2
6164 ldexpf_args=2
6165 powf_args=2
6166
6167 for func in $MATH_FUNCS; do
6168     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
6169 done
6170
6171 for func in $COMPLEX_FUNCS; do
6172     eval check_complexfunc $func \${${func}_args:-1}
6173 done
6174
6175 # these are off by default, so fail if requested and not available
6176 enabled cuda_nvcc         && { check_nvcc cuda_nvcc || die "ERROR: failed checking for nvcc."; }
6177 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
6178 enabled decklink          && { require_headers DeckLinkAPI.h &&
6179                                { test_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a090500" || die "ERROR: Decklink API version must be >= 10.9.5."; } }
6180 enabled frei0r            && require_headers "frei0r.h dlfcn.h"
6181 enabled gmp               && require gmp gmp.h mpz_export -lgmp
6182 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
6183 enabled jni               && { [ $target_os = "android" ] && check_headers jni.h && enabled pthreads || die "ERROR: jni not found"; }
6184 enabled ladspa            && require_headers "ladspa.h dlfcn.h"
6185 enabled libaom            && require_pkg_config libaom "aom >= 1.0.0" aom/aom_codec.h aom_codec_version
6186 enabled libaribb24        && { check_pkg_config libaribb24 "aribb24 > 1.0.3" "aribb24/aribb24.h" arib_instance_new ||
6187                                { enabled gpl && require_pkg_config libaribb24 aribb24 "aribb24/aribb24.h" arib_instance_new; } ||
6188                                die "ERROR: libaribb24 requires version higher than 1.0.3 or --enable-gpl."; }
6189 enabled lv2               && require_pkg_config lv2 lilv-0 "lilv/lilv.h" lilv_world_new
6190 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
6191 enabled libass            && require_pkg_config libass libass ass/ass.h ass_library_init
6192 enabled libbluray         && require_pkg_config libbluray libbluray libbluray/bluray.h bd_open
6193 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
6194 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
6195                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
6196                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
6197 enabled libcaca           && require_pkg_config libcaca caca caca.h caca_create_canvas
6198 enabled libcodec2         && require libcodec2 codec2/codec2.h codec2_create -lcodec2
6199 enabled libdav1d          && require_pkg_config libdav1d "dav1d >= 0.2.1" "dav1d/dav1d.h" dav1d_version
6200 enabled libdavs2          && require_pkg_config libdavs2 "davs2 >= 1.6.0" davs2.h davs2_decoder_open
6201 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
6202 enabled libdrm            && require_pkg_config libdrm libdrm xf86drm.h drmGetVersion
6203 enabled libfdk_aac        && { check_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
6204                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
6205                                  warn "using libfdk without pkg-config"; } }
6206 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"
6207 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
6208 enabled fontconfig        && enable libfontconfig
6209 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
6210 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
6211 enabled libfribidi        && require_pkg_config libfribidi fribidi fribidi.h fribidi_version_info
6212 enabled libgme            && { check_pkg_config libgme libgme gme/gme.h gme_new_emu ||
6213                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }
6214 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
6215                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
6216                                done || die "ERROR: libgsm not found"; }
6217 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc $pthreads_extralibs
6218 enabled libklvanc         && require libklvanc libklvanc/vanc.h klvanc_context_create -lklvanc
6219 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
6220 enabled liblensfun        && require_pkg_config liblensfun lensfun lensfun.h lf_db_new
6221 # While it may appear that require is being used as a pkg-config
6222 # fallback for libmfx, it is actually being used to detect a different
6223 # installation route altogether.  If libmfx is installed via the Intel
6224 # Media SDK or Intel Media Server Studio, these don't come with
6225 # pkg-config support.  Instead, users should make sure that the build
6226 # can find the libraries and headers through other means.
6227 enabled libmfx            && { check_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit ||
6228                                { require libmfx "mfx/mfxvideo.h" MFXInit "-llibmfx $advapi32_extralibs" && warn "using libmfx without pkg-config"; } }
6229 enabled libmodplug        && require_pkg_config libmodplug libmodplug libmodplug/modplug.h ModPlug_Load
6230 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame $libm_extralibs
6231 enabled libmysofa         && { check_pkg_config libmysofa libmysofa mysofa.h mysofa_load ||
6232                                require libmysofa mysofa.h mysofa_load -lmysofa $zlib_extralibs; }
6233 enabled libnpp            && { check_lib libnpp npp.h nppGetLibVersion -lnppig -lnppicc -lnppc -lnppidei ||
6234                                check_lib libnpp npp.h nppGetLibVersion -lnppi -lnppc -lnppidei ||
6235                                die "ERROR: libnpp not found"; }
6236 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
6237 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
6238 enabled libopencv         && { check_headers opencv2/core/core_c.h &&
6239                                { check_pkg_config libopencv opencv opencv2/core/core_c.h cvCreateImageHeader ||
6240                                  require libopencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
6241                                require_pkg_config libopencv opencv opencv/cxcore.h cvCreateImageHeader; }
6242 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
6243 enabled libopenjpeg       && { check_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version ||
6244                                { require_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } }
6245 enabled libopenmpt        && require_pkg_config libopenmpt "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create -lstdc++ && append libopenmpt_extralibs "-lstdc++"
6246 enabled libopus           && {
6247     enabled libopus_decoder && {
6248         require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
6249     }
6250     enabled libopus_encoder && {
6251         require_pkg_config libopus opus opus_multistream.h opus_multistream_surround_encoder_create
6252     }
6253 }
6254 enabled libpulse          && require_pkg_config libpulse libpulse pulse/pulseaudio.h pa_context_new
6255 enabled librsvg           && require_pkg_config librsvg librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
6256 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
6257 enabled librubberband     && require_pkg_config librubberband "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new -lstdc++ && append librubberband_extralibs "-lstdc++"
6258 enabled libshine          && require_pkg_config libshine shine shine/layer3.h shine_encode_buffer
6259 enabled libsmbclient      && { check_pkg_config libsmbclient smbclient libsmbclient.h smbc_init ||
6260                                require libsmbclient libsmbclient.h smbc_init -lsmbclient; }
6261 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy -lstdc++
6262 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
6263 enabled libssh            && require_pkg_config libssh libssh libssh/sftp.h sftp_init
6264 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init
6265 enabled libsrt            && require_pkg_config libsrt "srt >= 1.3.0" srt/srt.h srt_socket
6266 enabled libtensorflow     && require libtensorflow tensorflow/c/c_api.h TF_Version -ltensorflow
6267 enabled libtesseract      && require_pkg_config libtesseract tesseract tesseract/capi.h TessBaseAPICreate
6268 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
6269 enabled libtls            && require_pkg_config libtls libtls tls.h tls_configure
6270 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
6271                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
6272                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
6273 enabled libv4l2           && require_pkg_config libv4l2 libv4l2 libv4l2.h v4l2_ioctl
6274 enabled libvidstab        && require_pkg_config libvidstab "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
6275 enabled libvmaf           && require_pkg_config libvmaf "libvmaf >= 1.3.9" libvmaf.h compute_vmaf
6276 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
6277 enabled libvorbis         && require_pkg_config libvorbis vorbis vorbis/codec.h vorbis_info_init &&
6278                              require_pkg_config libvorbisenc vorbisenc vorbis/vorbisenc.h vorbis_encode_init
6279
6280 enabled libvpx            && {
6281     enabled libvpx_vp8_decoder && {
6282         check_pkg_config libvpx_vp8_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
6283             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"
6284     }
6285     enabled libvpx_vp8_encoder && {
6286         check_pkg_config libvpx_vp8_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
6287             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"
6288     }
6289     enabled libvpx_vp9_decoder && {
6290         check_pkg_config libvpx_vp9_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
6291             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"
6292     }
6293     enabled libvpx_vp9_encoder && {
6294         check_pkg_config libvpx_vp9_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
6295             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"
6296     }
6297     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
6298         die "libvpx enabled but no supported decoders found"
6299     fi
6300 }
6301
6302 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
6303 enabled libwebp           && {
6304     enabled libwebp_encoder      && require_pkg_config libwebp "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
6305     enabled libwebp_anim_encoder && check_pkg_config libwebp_anim_encoder "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit; }
6306 enabled libx264           && { check_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode ||
6307                                { require libx264 "stdint.h x264.h" x264_encoder_encode "-lx264 $pthreads_extralibs $libm_extralibs" &&
6308                                  warn "using libx264 without pkg-config"; } } &&
6309                              require_cpp_condition libx264 x264.h "X264_BUILD >= 118" &&
6310                              check_cpp_condition libx262 x264.h "X264_MPEG2"
6311 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
6312                              require_cpp_condition libx265 x265.h "X265_BUILD >= 68"
6313 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode "-lxavs $pthreads_extralibs $libm_extralibs"
6314 enabled libxavs2          && require_pkg_config libxavs2 "xavs2 >= 1.3.0" "stdint.h xavs2.h" xavs2_api_get
6315 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
6316 enabled libzimg           && require_pkg_config libzimg "zimg >= 2.7.0" zimg.h zimg_get_api_version
6317 enabled libzmq            && require_pkg_config libzmq libzmq zmq.h zmq_ctx_new
6318 enabled libzvbi           && require_pkg_config libzvbi zvbi-0.2 libzvbi.h vbi_decoder_new &&
6319                              { test_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
6320                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
6321 enabled libxml2           && require_pkg_config libxml2 libxml-2.0 libxml2/libxml/xmlversion.h xmlCheckVersion
6322 enabled mbedtls           && { check_pkg_config mbedtls mbedtls mbedtls/x509_crt.h mbedtls_x509_crt_init ||
6323                                check_pkg_config mbedtls mbedtls mbedtls/ssl.h mbedtls_ssl_init ||
6324                                check_lib mbedtls mbedtls/ssl.h mbedtls_ssl_init -lmbedtls -lmbedx509 -lmbedcrypto ||
6325                                die "ERROR: mbedTLS not found"; }
6326 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
6327 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
6328                                { ! enabled cross_compile &&
6329                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
6330                                  add_ldflags -L/opt/vc/lib/ &&
6331                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
6332                                die "ERROR: mmal not found" &&
6333                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
6334 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
6335                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
6336                                die "ERROR: openal not found"; } &&
6337                              { test_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
6338                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
6339 enabled opencl            && { check_pkg_config opencl OpenCL CL/cl.h clEnqueueNDRangeKernel ||
6340                                check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
6341                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
6342                                die "ERROR: opencl not found"; } &&
6343                              { test_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
6344                                test_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
6345                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
6346 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
6347                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
6348                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
6349                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
6350                                die "ERROR: opengl not found."
6351                              }
6352 enabled omx               && require_headers OMX_Core.h
6353 enabled omx_rpi           && { check_headers OMX_Core.h ||
6354                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_headers OMX_Core.h ; } ||
6355                                die "ERROR: OpenMAX IL headers not found"; } && enable omx
6356 enabled openssl           && { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
6357                                check_pkg_config openssl openssl openssl/ssl.h SSL_library_init ||
6358                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
6359                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
6360                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
6361                                die "ERROR: openssl not found"; }
6362 enabled pocketsphinx      && require_pkg_config pocketsphinx pocketsphinx pocketsphinx/pocketsphinx.h ps_init
6363 enabled rkmpp             && { require_pkg_config rkmpp rockchip_mpp  rockchip/rk_mpi.h mpp_create &&
6364                                require_pkg_config rockchip_mpp "rockchip_mpp >= 1.3.7" rockchip/rk_mpi.h mpp_create &&
6365                                { enabled libdrm ||
6366                                  die "ERROR: rkmpp requires --enable-libdrm"; }
6367                              }
6368 enabled vapoursynth       && require_pkg_config vapoursynth "vapoursynth-script >= 42" VSScript.h vsscript_init
6369
6370
6371 if enabled gcrypt; then
6372     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
6373     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
6374         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
6375         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
6376         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
6377             die "ERROR: gcrypt not found"
6378         add_cflags $gcrypt_cflags
6379     else
6380         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
6381     fi
6382 fi
6383
6384 if enabled sdl2; then
6385     SDL2_CONFIG="${cross_prefix}sdl2-config"
6386     test_pkg_config sdl2 "sdl2 >= 2.0.1 sdl2 < 2.1.0" SDL_events.h SDL_PollEvent
6387     if disabled sdl2 && "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6388         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6389         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6390         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6391         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6392         check_func_headers SDL_events.h SDL_PollEvent $sdl2_extralibs $sdl2_cflags &&
6393             enable sdl2
6394     fi
6395     if test $target_os = "mingw32"; then
6396         sdl2_extralibs=$(filter_out '-mwindows' $sdl2_extralibs)
6397     fi
6398 fi
6399
6400 if enabled decklink; then
6401     case $target_os in
6402         mingw32*|mingw64*|win32|win64)
6403             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6404             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6405             ;;
6406     esac
6407 fi
6408
6409 enabled securetransport &&
6410     check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6411     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" ||
6412         disable securetransport
6413
6414 enabled securetransport &&
6415     check_func SecItemImport "-Wl,-framework,CoreFoundation -Wl,-framework,Security"
6416
6417 enabled schannel &&
6418     check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6419     test_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" &&
6420     schannel_extralibs="-lsecur32" ||
6421         disable schannel
6422
6423 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6424 enabled makeinfo \
6425     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6426     && enable makeinfo_html || disable makeinfo_html
6427 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6428 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6429 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6430 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6431
6432 # check V4L2 codecs available in the API
6433 check_headers linux/fb.h
6434 check_headers linux/videodev2.h
6435 test_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6436 check_cc v4l2_m2m linux/videodev2.h "int i = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_VIDEO_M2M | V4L2_BUF_FLAG_LAST;"
6437 check_cc vc1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VC1_ANNEX_G;"
6438 check_cc mpeg1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG1;"
6439 check_cc mpeg2_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG2;"
6440 check_cc mpeg4_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG4;"
6441 check_cc hevc_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_HEVC;"
6442 check_cc h263_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H263;"
6443 check_cc h264_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H264;"
6444 check_cc vp8_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP8;"
6445 check_cc vp9_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP9;"
6446
6447 check_headers sys/videoio.h
6448 test_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6449
6450 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6451 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6452 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6453 # w32api 3.12 had it defined wrong
6454 check_cpp_condition vfwcap_defines vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER"
6455
6456 check_type "dshow.h" IBaseFilter
6457
6458 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6459 check_headers "dev/bktr/ioctl_meteor.h dev/bktr/ioctl_bt848.h"                   ||
6460     check_headers "machine/ioctl_meteor.h machine/ioctl_bt848.h"                 ||
6461     check_headers "dev/video/meteor/ioctl_meteor.h dev/video/bktr/ioctl_bt848.h" ||
6462     check_headers "dev/ic/bt8xx.h"
6463
6464 if check_struct sys/soundcard.h audio_buf_info bytes; then
6465     enable_sanitized sys/soundcard.h
6466 else
6467     test_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_sanitized sys/soundcard.h
6468     #include <sys/soundcard.h>
6469     audio_buf_info abc;
6470 EOF
6471 fi
6472
6473 enabled alsa && check_pkg_config alsa alsa "alsa/asoundlib.h" snd_pcm_htimestamp ||
6474     check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
6475
6476 enabled libjack &&
6477     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
6478
6479 enabled sndio && check_lib sndio sndio.h sio_open -lsndio
6480
6481 if enabled libcdio; then
6482     check_pkg_config libcdio libcdio_paranoia "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open ||
6483     check_pkg_config libcdio libcdio_paranoia "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open ||
6484     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6485     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6486     die "ERROR: No usable libcdio/cdparanoia found"
6487 fi
6488
6489 enabled libxcb && check_pkg_config libxcb "xcb >= 1.4" xcb/xcb.h xcb_connect ||
6490     disable libxcb_shm libxcb_shape libxcb_xfixes
6491
6492 if enabled libxcb; then
6493     enabled libxcb_shm    && check_pkg_config libxcb_shm    xcb-shm    xcb/shm.h    xcb_shm_attach
6494     enabled libxcb_shape  && check_pkg_config libxcb_shape  xcb-shape  xcb/shape.h  xcb_shape_get_rectangles
6495     enabled libxcb_xfixes && check_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
6496 fi
6497
6498 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6499
6500 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6501 # the desktop api partition
6502 test_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
6503 #ifdef WINAPI_FAMILY
6504 #include <winapifamily.h>
6505 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
6506 #error desktop, not uwp
6507 #else
6508 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
6509 #endif
6510 #else
6511 #error no family set
6512 #endif
6513 EOF
6514
6515 enabled vaapi &&
6516     check_pkg_config vaapi "libva >= 0.35.0" "va/va.h" vaInitialize
6517
6518 if enabled vaapi; then
6519     check_pkg_config vaapi_drm "libva-drm" "va/va_drm.h" vaGetDisplayDRM
6520
6521     if enabled xlib; then
6522         check_pkg_config vaapi_x11 "libva-x11" "va/va_x11.h" vaGetDisplay
6523     fi
6524
6525     check_cpp_condition vaapi_1 "va/va.h" "VA_CHECK_VERSION(1, 0, 0)"
6526
6527     check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
6528     check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
6529     check_struct "va/va.h va/va_vpp.h" "VAProcPipelineCaps" rotation_flags
6530     check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
6531     check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
6532     check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
6533     check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
6534 fi
6535
6536 if enabled_all opencl libdrm ; then
6537     check_type "CL/cl_intel.h" "clCreateImageFromFdINTEL_fn" &&
6538         enable opencl_drm_beignet
6539     check_func_headers "CL/cl_ext.h" clImportMemoryARM &&
6540         enable opencl_drm_arm
6541 fi
6542
6543 if enabled_all opencl vaapi ; then
6544     if enabled opencl_drm_beignet ; then
6545         enable opencl_vaapi_beignet
6546     else
6547         check_type "CL/cl.h CL/cl_va_api_media_sharing_intel.h" "clCreateFromVA_APIMediaSurfaceINTEL_fn" &&
6548             enable opencl_vaapi_intel_media
6549     fi
6550 fi
6551
6552 if enabled_all opencl dxva2 ; then
6553     check_type "CL/cl_dx9_media_sharing.h" cl_dx9_surface_info_khr &&
6554         enable opencl_dxva2
6555 fi
6556
6557 if enabled_all opencl d3d11va ; then
6558     check_type "CL/cl_d3d11.h" clGetDeviceIDsFromD3D11KHR_fn &&
6559         enable opencl_d3d11
6560 fi
6561
6562 enabled vdpau &&
6563     check_cpp_condition vdpau vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP"
6564
6565 enabled vdpau &&
6566     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6567
6568 enabled crystalhd && check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
6569
6570 if enabled x86; then
6571     case $target_os in
6572         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6573             ;;
6574         *)
6575             disable ffnvcodec cuvid nvdec nvenc
6576             ;;
6577     esac
6578 elif enabled ppc64 && ! enabled bigendian; then
6579     case $target_os in
6580         linux)
6581             ;;
6582         *)
6583             disable ffnvcodec cuvid nvdec nvenc
6584             ;;
6585     esac
6586 else
6587     disable ffnvcodec cuvid nvdec nvenc
6588 fi
6589
6590 enabled ffnvcodec && enable cuda
6591
6592 enabled nvenc &&
6593     test_cc -I$source_path <<EOF || disable nvenc
6594 #include <ffnvcodec/nvEncodeAPI.h>
6595 NV_ENCODE_API_FUNCTION_LIST flist;
6596 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6597 int main(void) { return 0; }
6598 EOF
6599
6600 enabled amf &&
6601     check_cpp_condition amf "AMF/core/Version.h" \
6602         "(AMF_VERSION_MAJOR << 48 | AMF_VERSION_MINOR << 32 | AMF_VERSION_RELEASE << 16 | AMF_VERSION_BUILD_NUM) >= 0x0001000400040001"
6603
6604 # Funny iconv installations are not unusual, so check it after all flags have been set
6605 if enabled libc_iconv; then
6606     check_func_headers iconv.h iconv
6607 elif enabled iconv; then
6608     check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6609 fi
6610
6611 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6612
6613 # add some useful compiler flags if supported
6614 check_cflags -Wdeclaration-after-statement
6615 check_cflags -Wall
6616 check_cflags -Wdisabled-optimization
6617 check_cflags -Wpointer-arith
6618 check_cflags -Wredundant-decls
6619 check_cflags -Wwrite-strings
6620 check_cflags -Wtype-limits
6621 check_cflags -Wundef
6622 check_cflags -Wmissing-prototypes
6623 check_cflags -Wno-pointer-to-int-cast
6624 check_cflags -Wstrict-prototypes
6625 check_cflags -Wempty-body
6626
6627 if enabled extra_warnings; then
6628     check_cflags -Wcast-qual
6629     check_cflags -Wextra
6630     check_cflags -Wpedantic
6631 fi
6632
6633 check_disable_warning(){
6634     warning_flag=-W${1#-Wno-}
6635     test_cflags $unknown_warning_flags $warning_flag && add_cflags $1
6636 }
6637
6638 test_cflags -Werror=unused-command-line-argument &&
6639     append unknown_warning_flags "-Werror=unused-command-line-argument"
6640 test_cflags -Werror=unknown-warning-option &&
6641     append unknown_warning_flags "-Werror=unknown-warning-option"
6642
6643 check_disable_warning -Wno-parentheses
6644 check_disable_warning -Wno-switch
6645 check_disable_warning -Wno-format-zero-length
6646 check_disable_warning -Wno-pointer-sign
6647 check_disable_warning -Wno-unused-const-variable
6648 check_disable_warning -Wno-bool-operation
6649 check_disable_warning -Wno-char-subscripts
6650
6651 check_disable_warning_headers(){
6652     warning_flag=-W${1#-Wno-}
6653     test_cflags $warning_flag && add_cflags_headers $1
6654 }
6655
6656 check_disable_warning_headers -Wno-deprecated-declarations
6657 check_disable_warning_headers -Wno-unused-variable
6658
6659 test_cc <<EOF && enable blocks_extension
6660 void (^block)(void);
6661 EOF
6662
6663 # add some linker flags
6664 check_ldflags -Wl,--warn-common
6665 check_ldflags -Wl,-rpath-link=:libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6666 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir && add_ldsoflags -Wl,-rpath,$libdir
6667 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6668
6669 # add some strip flags
6670 check_stripflags -x
6671
6672 enabled neon_clobber_test &&
6673     check_ldflags -Wl,--wrap,avcodec_open2              \
6674                   -Wl,--wrap,avcodec_decode_audio4      \
6675                   -Wl,--wrap,avcodec_decode_video2      \
6676                   -Wl,--wrap,avcodec_decode_subtitle2   \
6677                   -Wl,--wrap,avcodec_encode_audio2      \
6678                   -Wl,--wrap,avcodec_encode_video2      \
6679                   -Wl,--wrap,avcodec_encode_subtitle    \
6680                   -Wl,--wrap,avcodec_send_packet        \
6681                   -Wl,--wrap,avcodec_receive_packet     \
6682                   -Wl,--wrap,avcodec_send_frame         \
6683                   -Wl,--wrap,avcodec_receive_frame      \
6684                   -Wl,--wrap,swr_convert                \
6685                   -Wl,--wrap,avresample_convert ||
6686     disable neon_clobber_test
6687
6688 enabled xmm_clobber_test &&
6689     check_ldflags -Wl,--wrap,avcodec_open2              \
6690                   -Wl,--wrap,avcodec_decode_audio4      \
6691                   -Wl,--wrap,avcodec_decode_video2      \
6692                   -Wl,--wrap,avcodec_decode_subtitle2   \
6693                   -Wl,--wrap,avcodec_encode_audio2      \
6694                   -Wl,--wrap,avcodec_encode_video2      \
6695                   -Wl,--wrap,avcodec_encode_subtitle    \
6696                   -Wl,--wrap,avcodec_send_packet        \
6697                   -Wl,--wrap,avcodec_receive_packet     \
6698                   -Wl,--wrap,avcodec_send_frame         \
6699                   -Wl,--wrap,avcodec_receive_frame      \
6700                   -Wl,--wrap,swr_convert                \
6701                   -Wl,--wrap,avresample_convert         \
6702                   -Wl,--wrap,sws_scale ||
6703     disable xmm_clobber_test
6704
6705 check_ld "cc" proper_dce <<EOF
6706 extern const int array[512];
6707 static inline int func(void) { return array[0]; }
6708 int main(void) { return 0; }
6709 EOF
6710
6711 if enabled proper_dce; then
6712     echo "X { local: *; };" > $TMPV
6713     if test_ldflags -Wl,${version_script},$TMPV; then
6714         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6715         quotes='""'
6716         test_cc <<EOF && enable symver_asm_label
6717 void ff_foo(void) __asm__ ("av_foo@VERSION");
6718 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6719 EOF
6720         test_cc <<EOF && enable symver_gnu_asm
6721 __asm__(".symver ff_foo,av_foo@VERSION");
6722 void ff_foo(void) {}
6723 EOF
6724     fi
6725 fi
6726
6727 if [ -z "$optflags" ]; then
6728     if enabled small; then
6729         optflags=$cflags_size
6730     elif enabled optimizations; then
6731         optflags=$cflags_speed
6732     else
6733         optflags=$cflags_noopt
6734     fi
6735 fi
6736
6737 check_optflags(){
6738     check_cflags "$@"
6739     enabled lto && check_ldflags "$@"
6740 }
6741
6742 check_optflags $optflags
6743 check_optflags -fno-math-errno
6744 check_optflags -fno-signed-zeros
6745
6746 if enabled lto; then
6747     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6748     check_cflags  -flto
6749     check_ldflags -flto $cpuflags
6750     disable inline_asm_direct_symbol_refs
6751 fi
6752
6753 enabled ftrapv && check_cflags -ftrapv
6754
6755 test_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6756 int x;
6757 EOF
6758
6759
6760 if enabled icc; then
6761     # Just warnings, no remarks
6762     check_cflags -w1
6763     # -wd: Disable following warnings
6764     # 144, 167, 556: -Wno-pointer-sign
6765     # 188: enumerated type mixed with another type
6766     # 1292: attribute "foo" ignored
6767     # 1419: external declaration in primary source file
6768     # 10006: ignoring unknown option -fno-signed-zeros
6769     # 10148: ignoring unknown option -Wno-parentheses
6770     # 10156: ignoring option '-W'; no argument required
6771     # 13200: No EMMS instruction before call to function
6772     # 13203: No EMMS instruction before return from function
6773     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6774     # 11030: Warning unknown option --as-needed
6775     # 10156: ignoring option '-export'; no argument required
6776     check_ldflags -wd10156,11030
6777     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6778     enable ebp_available
6779     # The test above does not test linking
6780     enabled lto && disable symver_asm_label
6781     if enabled x86_32; then
6782         icc_version=$($cc -dumpversion)
6783         test ${icc_version%%.*} -ge 11 &&
6784             check_cflags -falign-stack=maintain-16-byte ||
6785             disable aligned_stack
6786     fi
6787 elif enabled gcc; then
6788     check_optflags -fno-tree-vectorize
6789     check_cflags -Werror=format-security
6790     check_cflags -Werror=implicit-function-declaration
6791     check_cflags -Werror=missing-prototypes
6792     check_cflags -Werror=return-type
6793     check_cflags -Werror=vla
6794     check_cflags -Wformat
6795     check_cflags -fdiagnostics-color=auto
6796     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6797     if enabled x86_32; then
6798         case $target_os in
6799         *bsd*)
6800             # BSDs don't guarantee a 16 byte aligned stack, but we can
6801             # request GCC to try to maintain 16 byte alignment throughout
6802             # function calls. Library entry points that might call assembly
6803             # functions align the stack. (The parameter means 2^4 bytes.)
6804             check_cflags -mpreferred-stack-boundary=4
6805             ;;
6806         esac
6807     fi
6808 elif enabled llvm_gcc; then
6809     check_cflags -mllvm -stack-alignment=16
6810 elif enabled clang; then
6811     if enabled x86_32; then
6812         # Clang doesn't support maintaining alignment without assuming the
6813         # same alignment in every function. If 16 byte alignment would be
6814         # enabled, one would also have to either add attribute_align_arg on
6815         # every single entry point into the libraries or enable -mstackrealign
6816         # (doing stack realignment in every single function).
6817         case $target_os in
6818         mingw32|win32|*bsd*)
6819             disable aligned_stack
6820             ;;
6821         *)
6822             check_cflags -mllvm -stack-alignment=16
6823             check_cflags -mstack-alignment=16
6824             ;;
6825         esac
6826     else
6827         check_cflags -mllvm -stack-alignment=16
6828         check_cflags -mstack-alignment=16
6829     fi
6830     check_cflags -Qunused-arguments
6831     check_cflags -Werror=implicit-function-declaration
6832     check_cflags -Werror=missing-prototypes
6833     check_cflags -Werror=return-type
6834 elif enabled cparser; then
6835     add_cflags -Wno-missing-variable-declarations
6836     add_cflags -Wno-empty-statement
6837 elif enabled armcc; then
6838     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6839     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6840     # 2523: use of inline assembly is deprecated
6841     add_cflags -W${armcc_opt},--diag_suppress=2523
6842     add_cflags -W${armcc_opt},--diag_suppress=1207
6843     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6844     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6845     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6846     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6847 elif enabled pathscale; then
6848     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6849     disable inline_asm
6850 elif enabled_any msvc icl; then
6851     enabled x86_32 && disable aligned_stack
6852     enabled_all x86_32 debug && add_cflags -Oy-
6853     enabled debug && add_ldflags -debug
6854     enable pragma_deprecated
6855     if enabled icl; then
6856         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6857         # (correctly) on icl 13.x.
6858         test_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6859             add_cflags -Qansi-alias
6860         # Some inline asm is not compilable in debug
6861         if enabled debug; then
6862             disable ebp_available
6863             disable ebx_available
6864         fi
6865     fi
6866     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6867     check_cpp_condition log2 crtversion.h "_VC_CRT_MAJOR_VERSION >= 12"
6868     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6869     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6870     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6871     # MSVC 2013 and newer can handle it fine.
6872     # If this declspec fails, force including stdlib.h before the restrict redefinition
6873     # happens in config.h.
6874     if [ $restrict_keyword != restrict ]; then
6875         test_cc <<EOF || add_cflags -FIstdlib.h
6876 __declspec($restrict_keyword) void *foo(int);
6877 EOF
6878     fi
6879     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6880     # Issue has been fixed in MSVC v19.00.24218.
6881     test_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6882         check_cflags -d2SSAOptimizer-
6883     # enable utf-8 source processing on VS2015 U2 and newer
6884     test_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6885         add_cflags -utf-8
6886 fi
6887
6888 for pfx in "" host_; do
6889     varname=${pfx%_}cc_type
6890     eval "type=\$$varname"
6891     if [ "$type" = "msvc" ]; then
6892         test_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6893 static inline int foo(int a) { return a; }
6894 EOF
6895     fi
6896 done
6897
6898 case $as_type in
6899     clang)
6900         add_asflags -Qunused-arguments
6901     ;;
6902 esac
6903
6904 case $ld_type in
6905     clang)
6906         check_ldflags -Qunused-arguments
6907     ;;
6908 esac
6909
6910 enable frame_thread_encoder
6911
6912 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6913
6914 check_deps $CONFIG_LIST       \
6915            $CONFIG_EXTRA      \
6916            $HAVE_LIST         \
6917            $ALL_COMPONENTS    \
6918
6919 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"
6920 enabled avresample && warn "Building with deprecated library libavresample"
6921
6922 case $target_os in
6923 haiku)
6924     disable memalign
6925     disable posix_memalign
6926     ;;
6927 *-dos|freedos|opendos)
6928     if test_cpp_condition sys/version.h "defined(__DJGPP__) && __DJGPP__ == 2 && __DJGPP_MINOR__ == 5"; then
6929         disable memalign
6930     fi
6931     ;;
6932 esac
6933
6934 flatten_extralibs(){
6935     nested_entries=
6936     list_name=$1
6937     eval list=\$${1}
6938     for entry in $list; do
6939         entry_copy=$entry
6940         resolve entry_copy
6941         flat_entries=
6942         for e in $entry_copy; do
6943             case $e in
6944                 *_extralibs) nested_entries="$nested_entries$e ";;
6945                           *) flat_entries="$flat_entries$e ";;
6946             esac
6947         done
6948         eval $entry="\$flat_entries"
6949     done
6950     append $list_name "$nested_entries"
6951
6952     resolve nested_entries
6953     if test -n "$(filter '*_extralibs' $nested_entries)"; then
6954         flatten_extralibs $list_name
6955     fi
6956 }
6957
6958 flatten_extralibs_wrapper(){
6959     list_name=$1
6960     flatten_extralibs $list_name
6961     unique $list_name
6962     resolve $list_name
6963     eval $list_name=\$\(\$ldflags_filter \$$list_name\)
6964     eval printf \''%s'\' \""\$$list_name"\"
6965 }
6966
6967 for linkunit in $LIBRARY_LIST; do
6968     unset current_extralibs
6969     eval components=\$$(toupper ${linkunit})_COMPONENTS_LIST
6970     for comp in ${components}; do
6971         enabled $comp || continue
6972         comp_extralibs="${comp}_extralibs"
6973         append current_extralibs $comp_extralibs
6974     done
6975     eval prepend ${linkunit}_extralibs $current_extralibs
6976 done
6977
6978 for linkunit in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
6979     eval ${linkunit}_extralibs=\$\(flatten_extralibs_wrapper ${linkunit}_extralibs\)
6980 done
6981
6982 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6983
6984 for thread in $THREADS_LIST; do
6985     if enabled $thread; then
6986         test -n "$thread_type" &&
6987             die "ERROR: Only one thread type must be selected." ||
6988             thread_type="$thread"
6989     fi
6990 done
6991
6992 if disabled stdatomic; then
6993     if enabled atomics_gcc; then
6994         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6995     elif enabled atomics_win32; then
6996         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6997     elif enabled atomics_suncc; then
6998         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6999     elif enabled pthreads; then
7000         add_compat atomics/pthread/stdatomic.o
7001         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
7002     else
7003         enabled threads && die "Threading is enabled, but no atomics are available"
7004         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
7005     fi
7006 fi
7007
7008 # Check if requested libraries were found.
7009 for lib in $AUTODETECT_LIBS; do
7010     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
7011 done
7012
7013 enabled zlib && add_cppflags -DZLIB_CONST
7014
7015 # conditional library dependencies, in any order
7016 enabled afftdn_filter       && prepend avfilter_deps "avcodec"
7017 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
7018 enabled afir_filter         && prepend avfilter_deps "avcodec"
7019 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
7020 enabled aresample_filter    && prepend avfilter_deps "swresample"
7021 enabled atempo_filter       && prepend avfilter_deps "avcodec"
7022 enabled bm3d_filter         && prepend avfilter_deps "avcodec"
7023 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
7024 enabled convolve_filter     && prepend avfilter_deps "avcodec"
7025 enabled deconvolve_filter   && prepend avfilter_deps "avcodec"
7026 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
7027 enabled elbg_filter         && prepend avfilter_deps "avcodec"
7028 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
7029 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
7030 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
7031 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
7032 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
7033 enabled pan_filter          && prepend avfilter_deps "swresample"
7034 enabled pp_filter           && prepend avfilter_deps "postproc"
7035 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
7036 enabled resample_filter && prepend avfilter_deps "avresample"
7037 enabled sab_filter          && prepend avfilter_deps "swscale"
7038 enabled scale_filter    && prepend avfilter_deps "swscale"
7039 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
7040 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
7041 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
7042 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
7043 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
7044 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
7045 enabled smartblur_filter    && prepend avfilter_deps "swscale"
7046 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
7047 enabled spp_filter          && prepend avfilter_deps "avcodec"
7048 enabled sr_filter           && prepend avfilter_deps "avformat swscale"
7049 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
7050 enabled uspp_filter         && prepend avfilter_deps "avcodec"
7051 enabled zoompan_filter      && prepend avfilter_deps "swscale"
7052
7053 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
7054
7055 #FIXME
7056 enabled_any sdl2_outdev opengl_outdev && enabled sdl2 &&
7057     add_cflags $(filter_out '-Dmain=SDL_main' $sdl2_cflags)
7058
7059 enabled opus_decoder    && prepend avcodec_deps "swresample"
7060
7061 # reorder the items at var $1 to align with the items order at var $2 .
7062 # die if an item at $1 is not at $2 .
7063 reorder_by(){
7064     eval rb_in=\$$1
7065     eval rb_ordered=\$$2
7066
7067     for rb in $rb_in; do
7068         is_in $rb $rb_ordered || die "$rb at \$$1 is not at \$$2"
7069     done
7070
7071     rb_out=
7072     for rb in $rb_ordered; do
7073         is_in $rb $rb_in && rb_out="$rb_out$rb "
7074     done
7075     eval $1=\$rb_out
7076 }
7077
7078 # deps-expand fflib $1:  N x {append all expanded deps; unique}
7079 # within a set of N items, N expansions are enough to expose a cycle.
7080 expand_deps(){
7081     unique ${1}_deps  # required for the early break test.
7082     for dummy in $LIBRARY_LIST; do  # N iteratios
7083         eval deps=\$${1}_deps
7084         append ${1}_deps $(map 'eval echo \$${v}_deps' $deps)
7085         unique ${1}_deps
7086         eval '[ ${#deps} = ${#'${1}_deps'} ]' && break  # doesn't expand anymore
7087     done
7088
7089     eval is_in $1 \$${1}_deps && die "Dependency cycle at ${1}_deps"
7090     reorder_by ${1}_deps LIBRARY_LIST  # linking order is expected later
7091 }
7092
7093 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
7094 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
7095
7096 map 'expand_deps $v' $LIBRARY_LIST
7097
7098 if test "$quiet" != "yes"; then
7099
7100 echo "install prefix            $prefix"
7101 echo "source path               $source_path"
7102 echo "C compiler                $cc"
7103 echo "C library                 $libc_type"
7104 if test "$host_cc" != "$cc"; then
7105     echo "host C compiler           $host_cc"
7106     echo "host C library            $host_libc_type"
7107 fi
7108 echo "ARCH                      $arch ($cpu)"
7109 if test "$build_suffix" != ""; then
7110     echo "build suffix              $build_suffix"
7111 fi
7112 if test "$progs_suffix" != ""; then
7113     echo "progs suffix              $progs_suffix"
7114 fi
7115 if test "$extra_version" != ""; then
7116     echo "version string suffix     $extra_version"
7117 fi
7118 echo "big-endian                ${bigendian-no}"
7119 echo "runtime cpu detection     ${runtime_cpudetect-no}"
7120 if enabled x86; then
7121     echo "standalone assembly       ${x86asm-no}"
7122     echo "x86 assembler             ${x86asmexe}"
7123     echo "MMX enabled               ${mmx-no}"
7124     echo "MMXEXT enabled            ${mmxext-no}"
7125     echo "3DNow! enabled            ${amd3dnow-no}"
7126     echo "3DNow! extended enabled   ${amd3dnowext-no}"
7127     echo "SSE enabled               ${sse-no}"
7128     echo "SSSE3 enabled             ${ssse3-no}"
7129     echo "AESNI enabled             ${aesni-no}"
7130     echo "AVX enabled               ${avx-no}"
7131     echo "AVX2 enabled              ${avx2-no}"
7132     echo "AVX-512 enabled           ${avx512-no}"
7133     echo "XOP enabled               ${xop-no}"
7134     echo "FMA3 enabled              ${fma3-no}"
7135     echo "FMA4 enabled              ${fma4-no}"
7136     echo "i686 features enabled     ${i686-no}"
7137     echo "CMOV is fast              ${fast_cmov-no}"
7138     echo "EBX available             ${ebx_available-no}"
7139     echo "EBP available             ${ebp_available-no}"
7140 fi
7141 if enabled aarch64; then
7142     echo "NEON enabled              ${neon-no}"
7143     echo "VFP enabled               ${vfp-no}"
7144 fi
7145 if enabled arm; then
7146     echo "ARMv5TE enabled           ${armv5te-no}"
7147     echo "ARMv6 enabled             ${armv6-no}"
7148     echo "ARMv6T2 enabled           ${armv6t2-no}"
7149     echo "VFP enabled               ${vfp-no}"
7150     echo "NEON enabled              ${neon-no}"
7151     echo "THUMB enabled             ${thumb-no}"
7152 fi
7153 if enabled mips; then
7154     echo "MIPS FPU enabled          ${mipsfpu-no}"
7155     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
7156     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
7157     echo "MIPS MSA enabled          ${msa-no}"
7158     echo "MIPS MSA2 enabled         ${msa2-no}"
7159     echo "LOONGSON MMI enabled      ${mmi-no}"
7160 fi
7161 if enabled ppc; then
7162     echo "AltiVec enabled           ${altivec-no}"
7163     echo "VSX enabled               ${vsx-no}"
7164     echo "POWER8 enabled            ${power8-no}"
7165     echo "PPC 4xx optimizations     ${ppc4xx-no}"
7166     echo "dcbzl available           ${dcbzl-no}"
7167 fi
7168 echo "debug symbols             ${debug-no}"
7169 echo "strip symbols             ${stripping-no}"
7170 echo "optimize for size         ${small-no}"
7171 echo "optimizations             ${optimizations-no}"
7172 echo "static                    ${static-no}"
7173 echo "shared                    ${shared-no}"
7174 echo "postprocessing support    ${postproc-no}"
7175 echo "network support           ${network-no}"
7176 echo "threading support         ${thread_type-no}"
7177 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
7178 echo "texi2html enabled         ${texi2html-no}"
7179 echo "perl enabled              ${perl-no}"
7180 echo "pod2man enabled           ${pod2man-no}"
7181 echo "makeinfo enabled          ${makeinfo-no}"
7182 echo "makeinfo supports HTML    ${makeinfo_html-no}"
7183 test -n "$random_seed" &&
7184     echo "random seed               ${random_seed}"
7185 echo
7186
7187 echo "External libraries:"
7188 print_enabled '' $EXTERNAL_LIBRARY_LIST $EXTERNAL_AUTODETECT_LIBRARY_LIST | print_in_columns
7189 echo
7190
7191 echo "External libraries providing hardware acceleration:"
7192 print_enabled '' $HWACCEL_LIBRARY_LIST $HWACCEL_AUTODETECT_LIBRARY_LIST | print_in_columns
7193 echo
7194
7195 echo "Libraries:"
7196 print_enabled '' $LIBRARY_LIST | print_in_columns
7197 echo
7198
7199 echo "Programs:"
7200 print_enabled '' $PROGRAM_LIST | print_in_columns
7201 echo
7202
7203 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
7204     echo "Enabled ${type}s:"
7205     eval list=\$$(toupper $type)_LIST
7206     print_enabled '_*' $list | print_in_columns
7207     echo
7208 done
7209
7210 if test -n "$ignore_tests"; then
7211     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
7212     echo "Ignored FATE tests:"
7213     echo $ignore_tests | print_in_columns
7214     echo
7215 fi
7216
7217 echo "License: $license"
7218
7219 fi # test "$quiet" != "yes"
7220
7221 if test -n "$WARN_IF_GETS_DISABLED_LIST"; then
7222     for cfg in $WARN_IF_GETS_DISABLED_LIST; do
7223         if disabled $cfg; then
7224             varname=${cfg}_disable_reason
7225             eval "warn \"Disabled $cfg because \$$varname\""
7226         fi
7227     done
7228 fi
7229
7230 if test -n "$WARNINGS"; then
7231     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
7232     enabled fatal_warnings && exit 1
7233 fi
7234
7235 test -e Makefile || echo "include $source_path/Makefile" > Makefile
7236
7237 esc(){
7238     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
7239 }
7240
7241 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
7242
7243 enabled stripping || strip="echo skipping strip"
7244 enabled stripping || striptype=""
7245
7246 config_files="$TMPH ffbuild/config.mak doc/config.texi"
7247
7248 cat > ffbuild/config.mak <<EOF
7249 # Automatically generated by configure - do not modify!
7250 ifndef FFMPEG_CONFIG_MAK
7251 FFMPEG_CONFIG_MAK=1
7252 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
7253 prefix=$prefix
7254 LIBDIR=\$(DESTDIR)$libdir
7255 SHLIBDIR=\$(DESTDIR)$shlibdir
7256 INCDIR=\$(DESTDIR)$incdir
7257 BINDIR=\$(DESTDIR)$bindir
7258 DATADIR=\$(DESTDIR)$datadir
7259 DOCDIR=\$(DESTDIR)$docdir
7260 MANDIR=\$(DESTDIR)$mandir
7261 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
7262 INSTALL_NAME_DIR=$install_name_dir
7263 SRC_PATH=$source_path
7264 SRC_LINK=$source_link
7265 ifndef MAIN_MAKEFILE
7266 SRC_PATH:=\$(SRC_PATH:.%=..%)
7267 endif
7268 CC_IDENT=$cc_ident
7269 ARCH=$arch
7270 INTRINSICS=$intrinsics
7271 EXTERN_PREFIX=$extern_prefix
7272 CC=$cc
7273 CXX=$cxx
7274 AS=$as
7275 OBJCC=$objcc
7276 LD=$ld
7277 DEPCC=$dep_cc
7278 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
7279 DEPAS=$as
7280 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
7281 X86ASM=$x86asmexe
7282 DEPX86ASM=$x86asmexe
7283 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
7284 AR=$ar
7285 ARFLAGS=$arflags
7286 AR_O=$ar_o
7287 AR_CMD=$ar
7288 NM_CMD=$nm
7289 RANLIB=$ranlib
7290 STRIP=$strip
7291 STRIPTYPE=$striptype
7292 NVCC=$nvcc
7293 CP=cp -p
7294 LN_S=$ln_s
7295 CPPFLAGS=$CPPFLAGS
7296 CFLAGS=$CFLAGS
7297 CXXFLAGS=$CXXFLAGS
7298 OBJCFLAGS=$OBJCFLAGS
7299 ASFLAGS=$ASFLAGS
7300 NVCCFLAGS=$nvccflags
7301 AS_C=$AS_C
7302 AS_O=$AS_O
7303 OBJCC_C=$OBJCC_C
7304 OBJCC_E=$OBJCC_E
7305 OBJCC_O=$OBJCC_O
7306 CC_C=$CC_C
7307 CC_E=$CC_E
7308 CC_O=$CC_O
7309 CXX_C=$CXX_C
7310 CXX_O=$CXX_O
7311 NVCC_C=$NVCC_C
7312 NVCC_O=$NVCC_O
7313 LD_O=$LD_O
7314 X86ASM_O=$X86ASM_O
7315 LD_LIB=$LD_LIB
7316 LD_PATH=$LD_PATH
7317 DLLTOOL=$dlltool
7318 WINDRES=$windres
7319 DEPWINDRES=$dep_cc
7320 DOXYGEN=$doxygen
7321 LDFLAGS=$LDFLAGS
7322 LDEXEFLAGS=$LDEXEFLAGS
7323 LDSOFLAGS=$LDSOFLAGS
7324 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
7325 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
7326 X86ASMFLAGS=$X86ASMFLAGS
7327 BUILDSUF=$build_suffix
7328 PROGSSUF=$progs_suffix
7329 FULLNAME=$FULLNAME
7330 LIBPREF=$LIBPREF
7331 LIBSUF=$LIBSUF
7332 LIBNAME=$LIBNAME
7333 SLIBPREF=$SLIBPREF
7334 SLIBSUF=$SLIBSUF
7335 EXESUF=$EXESUF
7336 EXTRA_VERSION=$extra_version
7337 CCDEP=$CCDEP
7338 CXXDEP=$CXXDEP
7339 CCDEP_FLAGS=$CCDEP_FLAGS
7340 ASDEP=$ASDEP
7341 ASDEP_FLAGS=$ASDEP_FLAGS
7342 X86ASMDEP=$X86ASMDEP
7343 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
7344 CC_DEPFLAGS=$CC_DEPFLAGS
7345 AS_DEPFLAGS=$AS_DEPFLAGS
7346 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
7347 HOSTCC=$host_cc
7348 HOSTLD=$host_ld
7349 HOSTCFLAGS=$host_cflags
7350 HOSTCPPFLAGS=$host_cppflags
7351 HOSTEXESUF=$HOSTEXESUF
7352 HOSTLDFLAGS=$host_ldflags
7353 HOSTEXTRALIBS=$host_extralibs
7354 DEPHOSTCC=$host_cc
7355 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
7356 HOSTCCDEP=$HOSTCCDEP
7357 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
7358 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
7359 HOSTCC_C=$HOSTCC_C
7360 HOSTCC_O=$HOSTCC_O
7361 HOSTLD_O=$HOSTLD_O
7362 TARGET_EXEC=$target_exec $target_exec_args
7363 TARGET_PATH=$target_path
7364 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
7365 CFLAGS-ffplay=${sdl2_cflags}
7366 CFLAGS_HEADERS=$CFLAGS_HEADERS
7367 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
7368 EXTRALIBS=$extralibs
7369 COMPAT_OBJS=$compat_objs
7370 INSTALL=$install
7371 LIBTARGET=${LIBTARGET}
7372 SLIBNAME=${SLIBNAME}
7373 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
7374 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
7375 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
7376 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
7377 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
7378 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
7379 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
7380 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
7381 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
7382 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
7383 NOREDZONE_FLAGS=$noredzone_flags
7384 LIBFUZZER_PATH=$libfuzzer_path
7385 IGNORE_TESTS=$ignore_tests
7386 EOF
7387
7388 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
7389
7390 for entry in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
7391     eval echo "EXTRALIBS-${entry}=\$${entry}_extralibs" >> ffbuild/config.mak
7392 done
7393
7394 cat > $TMPH <<EOF
7395 /* Automatically generated by configure - do not modify! */
7396 #ifndef FFMPEG_CONFIG_H
7397 #define FFMPEG_CONFIG_H
7398 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
7399 #define FFMPEG_LICENSE "$(c_escape $license)"
7400 #define CONFIG_THIS_YEAR 2019
7401 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
7402 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
7403 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
7404 #define av_restrict $restrict_keyword
7405 #define EXTERN_PREFIX "${extern_prefix}"
7406 #define EXTERN_ASM ${extern_prefix}
7407 #define BUILDSUF "$build_suffix"
7408 #define SLIBSUF "$SLIBSUF"
7409 #define HAVE_MMX2 HAVE_MMXEXT
7410 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
7411 EOF
7412
7413 test -n "$assert_level" &&
7414     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
7415
7416 test -n "$malloc_prefix" &&
7417     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
7418
7419 if enabled x86asm; then
7420     append config_files $TMPASM
7421     cat > $TMPASM <<EOF
7422 ; Automatically generated by configure - do not modify!
7423 EOF
7424 fi
7425
7426 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
7427
7428
7429 mkdir -p doc
7430 mkdir -p tests
7431 mkdir -p tests/api
7432 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
7433
7434 print_config ARCH_   "$config_files" $ARCH_LIST
7435 print_config HAVE_   "$config_files" $HAVE_LIST
7436 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
7437                                      $CONFIG_EXTRA      \
7438                                      $ALL_COMPONENTS    \
7439
7440 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
7441 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
7442
7443 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
7444 cp_if_changed $TMPH config.h
7445 touch ffbuild/.config
7446
7447 enabled x86asm && cp_if_changed $TMPASM config.asm
7448
7449 cat > $TMPH <<EOF
7450 /* Generated by ffmpeg configure */
7451 #ifndef AVUTIL_AVCONFIG_H
7452 #define AVUTIL_AVCONFIG_H
7453 EOF
7454
7455 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
7456
7457 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
7458
7459 cp_if_changed $TMPH libavutil/avconfig.h
7460
7461 # full_filter_name_foo=vf_foo
7462 # full_filter_name_bar=asrc_bar
7463 # ...
7464 eval "$(sed -n "s/^extern AVFilter ff_\([avfsinkrc]\{2,5\}\)_\(.*\);/full_filter_name_\2=\1_\2/p" $source_path/libavfilter/allfilters.c)"
7465
7466 # generate the lists of enabled components
7467 print_enabled_components(){
7468     file=$1
7469     struct_name=$2
7470     name=$3
7471     shift 3
7472     echo "static const $struct_name * const $name[] = {" > $TMPH
7473     for c in $*; do
7474         if enabled $c; then
7475             case $name in
7476                 filter_list)
7477                     eval c=\$full_filter_name_${c%_filter}
7478                 ;;
7479                 indev_list)
7480                     c=${c%_indev}_demuxer
7481                 ;;
7482                 outdev_list)
7483                     c=${c%_outdev}_muxer
7484                 ;;
7485             esac
7486             printf "    &ff_%s,\n" $c >> $TMPH
7487         fi
7488     done
7489     if [ "$name" = "filter_list" ]; then
7490         for c in asrc_abuffer vsrc_buffer asink_abuffer vsink_buffer; do
7491             printf "    &ff_%s,\n" $c >> $TMPH
7492         done
7493     fi
7494     echo "    NULL };" >> $TMPH
7495     cp_if_changed $TMPH $file
7496 }
7497
7498 print_enabled_components libavfilter/filter_list.c AVFilter filter_list $FILTER_LIST
7499 print_enabled_components libavcodec/codec_list.c AVCodec codec_list $CODEC_LIST
7500 print_enabled_components libavcodec/parser_list.c AVCodecParser parser_list $PARSER_LIST
7501 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
7502 print_enabled_components libavformat/demuxer_list.c AVInputFormat demuxer_list $DEMUXER_LIST
7503 print_enabled_components libavformat/muxer_list.c AVOutputFormat muxer_list $MUXER_LIST
7504 print_enabled_components libavdevice/indev_list.c AVInputFormat indev_list $INDEV_LIST
7505 print_enabled_components libavdevice/outdev_list.c AVOutputFormat outdev_list $OUTDEV_LIST
7506 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
7507
7508 # Settings for pkg-config files
7509
7510 cat > $TMPH <<EOF
7511 # Automatically generated by configure - do not modify!
7512 shared=$shared
7513 build_suffix=$build_suffix
7514 prefix=$prefix
7515 libdir=$libdir
7516 incdir=$incdir
7517 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
7518 source_path=${source_path}
7519 LIBPREF=${LIBPREF}
7520 LIBSUF=${LIBSUF}
7521 extralibs_avutil="$avutil_extralibs"
7522 extralibs_avcodec="$avcodec_extralibs"
7523 extralibs_avformat="$avformat_extralibs"
7524 extralibs_avdevice="$avdevice_extralibs"
7525 extralibs_avfilter="$avfilter_extralibs"
7526 extralibs_avresample="$avresample_extralibs"
7527 extralibs_postproc="$postproc_extralibs"
7528 extralibs_swscale="$swscale_extralibs"
7529 extralibs_swresample="$swresample_extralibs"
7530 EOF
7531
7532 for lib in $LIBRARY_LIST; do
7533     lib_deps="$(eval echo \$${lib}_deps)"
7534     echo ${lib}_deps=\"$lib_deps\" >> $TMPH
7535 done
7536
7537 cp_if_changed $TMPH ffbuild/config.sh