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

   1 #!/bin/sh
   2 #
   3 # FFmpeg configure script
   4 #
   5 # Copyright (c) 2000-2002 Fabrice Bellard
   6 # Copyright (c) 2005-2008 Diego Biurrun
   7 # Copyright (c) 2005-2008 Mans Rullgard
   8 #
   9
  10 # Prevent locale nonsense from breaking basic text processing.
  11 LC_ALL=C
  12 export LC_ALL
  13
  14 # make sure we are running under a compatible shell
  15 # try to make this part work with most shells
  16
  17 try_exec(){
  18     echo "Trying shell $1"
  19     type "$1" > /dev/null 2>&1 && exec "$@"
  20 }
  21
  22 unset foo
  23 (: ${foo%%bar}) 2> /dev/null
  24 E1="$?"
  25
  26 (: ${foo?}) 2> /dev/null
  27 E2="$?"
  28
  29 if test "$E1" != 0 || test "$E2" = 0; then
  30     echo "Broken shell detected.  Trying alternatives."
  31     export FF_CONF_EXEC
  32     if test "0$FF_CONF_EXEC" -lt 1; then
  33         FF_CONF_EXEC=1
  34         try_exec bash "$0" "$@"
  35     fi
  36     if test "0$FF_CONF_EXEC" -lt 2; then
  37         FF_CONF_EXEC=2
  38         try_exec ksh "$0" "$@"
  39     fi
  40     if test "0$FF_CONF_EXEC" -lt 3; then
  41         FF_CONF_EXEC=3
  42         try_exec /usr/xpg4/bin/sh "$0" "$@"
  43     fi
  44     echo "No compatible shell script interpreter found."
  45     echo "This configure script requires a POSIX-compatible shell"
  46     echo "such as bash or ksh."
  47     echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
  48     echo "Instead, install a working POSIX-compatible shell."
  49     echo "Disabling this configure test will create a broken FFmpeg."
  50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
  51         echo "This bash version ($BASH_VERSION) is broken on your platform."
  52         echo "Upgrade to a later version if available."
  53     fi
  54     exit 1
  55 fi
  56
  57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
  58
  59 show_help(){
  60     cat <<EOF
  61 Usage: configure [options]
  62 Options: [defaults in brackets after descriptions]
  63
  64 Help options:
  65   --help                   print this message
  66   --quiet                  Suppress showing informative output
  67   --list-decoders          show all available decoders
  68   --list-encoders          show all available encoders
  69   --list-hwaccels          show all available hardware accelerators
  70   --list-demuxers          show all available demuxers
  71   --list-muxers            show all available muxers
  72   --list-parsers           show all available parsers
  73   --list-protocols         show all available protocols
  74   --list-bsfs              show all available bitstream filters
  75   --list-indevs            show all available input devices
  76   --list-outdevs           show all available output devices
  77   --list-filters           show all available filters
  78
  79 Standard options:
  80   --logfile=FILE           log tests and output to FILE [ffbuild/config.log]
  81   --disable-logging        do not log configure debug information
  82   --fatal-warnings         fail if any configure warning is generated
  83   --prefix=PREFIX          install in PREFIX [$prefix_default]
  84   --bindir=DIR             install binaries in DIR [PREFIX/bin]
  85   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
  86   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
  87   --libdir=DIR             install libs in DIR [PREFIX/lib]
  88   --shlibdir=DIR           install shared libs in DIR [LIBDIR]
  89   --incdir=DIR             install includes in DIR [PREFIX/include]
  90   --mandir=DIR             install man page in DIR [PREFIX/share/man]
  91   --pkgconfigdir=DIR       install pkg-config files in DIR [LIBDIR/pkgconfig]
  92   --enable-rpath           use rpath to allow installing libraries in paths
  93                            not part of the dynamic linker search path
  94                            use rpath when linking programs (USE WITH CARE)
  95   --install-name-dir=DIR   Darwin directory name for installed targets
  96
  97 Licensing options:
  98   --enable-gpl             allow use of GPL code, the resulting libs
  99                            and binaries will be under GPL [no]
 100   --enable-version3        upgrade (L)GPL to version 3 [no]
 101   --enable-nonfree         allow use of nonfree code, the resulting libs
 102                            and binaries will be unredistributable [no]
 103
 104 Configuration options:
 105   --disable-static         do not build static libraries [no]
 106   --enable-shared          build shared libraries [no]
 107   --enable-small           optimize for size instead of speed
 108   --disable-runtime-cpudetect disable detecting CPU capabilities at runtime (smaller binary)
 109   --enable-gray            enable full grayscale support (slower color)
 110   --disable-swscale-alpha  disable alpha channel support in swscale
 111   --disable-all            disable building components, libraries and programs
 112   --disable-autodetect     disable automatically detected external libraries [no]
 113
 114 Program options:
 115   --disable-programs       do not build command line programs
 116   --disable-ffmpeg         disable ffmpeg build
 117   --disable-ffplay         disable ffplay build
 118   --disable-ffprobe        disable ffprobe build
 119
 120 Documentation options:
 121   --disable-doc            do not build documentation
 122   --disable-htmlpages      do not build HTML documentation pages
 123   --disable-manpages       do not build man documentation pages
 124   --disable-podpages       do not build POD documentation pages
 125   --disable-txtpages       do not build text documentation pages
 126
 127 Component options:
 128   --disable-avdevice       disable libavdevice build
 129   --disable-avcodec        disable libavcodec build
 130   --disable-avformat       disable libavformat build
 131   --disable-swresample     disable libswresample build
 132   --disable-swscale        disable libswscale build
 133   --disable-postproc       disable libpostproc build
 134   --disable-avfilter       disable libavfilter build
 135   --enable-avresample      enable libavresample build (deprecated) [no]
 136   --disable-pthreads       disable pthreads [autodetect]
 137   --disable-w32threads     disable Win32 threads [autodetect]
 138   --disable-os2threads     disable OS/2 threads [autodetect]
 139   --disable-network        disable network support [no]
 140   --disable-dct            disable DCT code
 141   --disable-dwt            disable DWT code
 142   --disable-error-resilience disable error resilience code
 143   --disable-lsp            disable LSP code
 144   --disable-lzo            disable LZO decoder code
 145   --disable-mdct           disable MDCT code
 146   --disable-rdft           disable RDFT code
 147   --disable-fft            disable FFT code
 148   --disable-faan           disable floating point AAN (I)DCT code
 149   --disable-pixelutils     disable pixel utils in libavutil
 150
 151 Individual component options:
 152   --disable-everything     disable all components listed below
 153   --disable-encoder=NAME   disable encoder NAME
 154   --enable-encoder=NAME    enable encoder NAME
 155   --disable-encoders       disable all encoders
 156   --disable-decoder=NAME   disable decoder NAME
 157   --enable-decoder=NAME    enable decoder NAME
 158   --disable-decoders       disable all decoders
 159   --disable-hwaccel=NAME   disable hwaccel NAME
 160   --enable-hwaccel=NAME    enable hwaccel NAME
 161   --disable-hwaccels       disable all hwaccels
 162   --disable-muxer=NAME     disable muxer NAME
 163   --enable-muxer=NAME      enable muxer NAME
 164   --disable-muxers         disable all muxers
 165   --disable-demuxer=NAME   disable demuxer NAME
 166   --enable-demuxer=NAME    enable demuxer NAME
 167   --disable-demuxers       disable all demuxers
 168   --enable-parser=NAME     enable parser NAME
 169   --disable-parser=NAME    disable parser NAME
 170   --disable-parsers        disable all parsers
 171   --enable-bsf=NAME        enable bitstream filter NAME
 172   --disable-bsf=NAME       disable bitstream filter NAME
 173   --disable-bsfs           disable all bitstream filters
 174   --enable-protocol=NAME   enable protocol NAME
 175   --disable-protocol=NAME  disable protocol NAME
 176   --disable-protocols      disable all protocols
 177   --enable-indev=NAME      enable input device NAME
 178   --disable-indev=NAME     disable input device NAME
 179   --disable-indevs         disable input devices
 180   --enable-outdev=NAME     enable output device NAME
 181   --disable-outdev=NAME    disable output device NAME
 182   --disable-outdevs        disable output devices
 183   --disable-devices        disable all devices
 184   --enable-filter=NAME     enable filter NAME
 185   --disable-filter=NAME    disable filter NAME
 186   --disable-filters        disable all filters
 187
 188 External library support:
 189
 190   Using any of the following switches will allow FFmpeg to link to the
 191   corresponding external library. All the components depending on that library
 192   will become enabled, if all their other dependencies are met and they are not
 193   explicitly disabled. E.g. --enable-libwavpack will enable linking to
 194   libwavpack and allow the libwavpack encoder to be built, unless it is
 195   specifically disabled with --disable-encoder=libwavpack.
 196
 197   Note that only the system libraries are auto-detected. All the other external
 198   libraries must be explicitly enabled.
 199
 200   Also note that the following help text describes the purpose of the libraries
 201   themselves, not all their features will necessarily be usable by FFmpeg.
 202
 203   --disable-alsa           disable ALSA support [autodetect]
 204   --disable-appkit         disable Apple AppKit framework [autodetect]
 205   --disable-avfoundation   disable Apple AVFoundation framework [autodetect]
 206   --enable-avisynth        enable reading of AviSynth script files [no]
 207   --disable-bzlib          disable bzlib [autodetect]
 208   --disable-coreimage      disable Apple CoreImage framework [autodetect]
 209   --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
 210   --enable-frei0r          enable frei0r video filtering [no]
 211   --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
 212                            if openssl, librtmp or gmp is not used [no]
 213   --enable-gmp             enable gmp, needed for rtmp(t)e support
 214                            if openssl or librtmp is not used [no]
 215   --enable-gnutls          enable gnutls, needed for https support
 216                            if openssl, libtls or mbedtls is not used [no]
 217   --disable-iconv          disable iconv [autodetect]
 218   --enable-jni             enable JNI support [no]
 219   --enable-ladspa          enable LADSPA audio filtering [no]
 220   --enable-libaom          enable AV1 video encoding/decoding via libaom [no]
 221   --enable-libaribb24      enable ARIB text and caption decoding via libaribb24 [no]
 222   --enable-libass          enable libass subtitles rendering,
 223                            needed for subtitles and ass filter [no]
 224   --enable-libbluray       enable BluRay reading using libbluray [no]
 225   --enable-libbs2b         enable bs2b DSP library [no]
 226   --enable-libcaca         enable textual display using libcaca [no]
 227   --enable-libcelt         enable CELT decoding via libcelt [no]
 228   --enable-libcdio         enable audio CD grabbing with libcdio [no]
 229   --enable-libcodec2       enable codec2 en/decoding using libcodec2 [no]
 230   --enable-libdav1d        enable AV1 decoding via libdav1d [no]
 231   --enable-libdavs2        enable AVS2 decoding via libdavs2 [no]
 232   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 233                            and libraw1394 [no]
 234   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 235   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 236   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
 237   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
 238   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
 239   --enable-libgme          enable Game Music Emu via libgme [no]
 240   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 241   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 242   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 243   --enable-libjack         enable JACK audio sound server [no]
 244   --enable-libklvanc       enable Kernel Labs VANC processing [no]
 245   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
 246   --enable-liblensfun      enable lensfun lens correction [no]
 247   --enable-libmodplug      enable ModPlug via libmodplug [no]
 248   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 249   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 250   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 251   --enable-libopencv       enable video filtering via libopencv [no]
 252   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 253   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 254   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
 255   --enable-libopus         enable Opus de/encoding via libopus [no]
 256   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 257   --enable-librav1e        enable AV1 encoding via rav1e [no]
 258   --enable-librsvg         enable SVG rasterization via librsvg [no]
 259   --enable-librubberband   enable rubberband needed for rubberband filter [no]
 260   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 261   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 262   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 263   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
 264   --enable-libsoxr         enable Include libsoxr resampling [no]
 265   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 266   --enable-libsrt          enable Haivision SRT protocol via libsrt [no]
 267   --enable-libssh          enable SFTP protocol via libssh [no]
 268   --enable-libtensorflow   enable TensorFlow as a DNN module backend
 269                            for DNN based filters like sr [no]
 270   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
 271   --enable-libtheora       enable Theora encoding via libtheora [no]
 272   --enable-libtls          enable LibreSSL (via libtls), needed for https support
 273                            if openssl, gnutls or mbedtls is not used [no]
 274   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 275   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 276   --enable-libvidstab      enable video stabilization using vid.stab [no]
 277   --enable-libvmaf         enable vmaf filter via libvmaf [no]
 278   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 279   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 280                            native implementation exists [no]
 281   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 282   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 283   --enable-libwebp         enable WebP encoding via libwebp [no]
 284   --enable-libx264         enable H.264 encoding via x264 [no]
 285   --enable-libx265         enable HEVC encoding via x265 [no]
 286   --enable-libxavs         enable AVS encoding via xavs [no]
 287   --enable-libxavs2        enable AVS2 encoding via xavs2 [no]
 288   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
 289   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
 290   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
 291   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
 292   --enable-libxvid         enable Xvid encoding via xvidcore,
 293                            native MPEG-4/Xvid encoder exists [no]
 294   --enable-libxml2         enable XML parsing using the C library libxml2, needed
 295                            for dash demuxing support [no]
 296   --enable-libzimg         enable z.lib, needed for zscale filter [no]
 297   --enable-libzmq          enable message passing via libzmq [no]
 298   --enable-libzvbi         enable teletext support via libzvbi [no]
 299   --enable-lv2             enable LV2 audio filtering [no]
 300   --disable-lzma           disable lzma [autodetect]
 301   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
 302   --enable-mbedtls         enable mbedTLS, needed for https support
 303                            if openssl, gnutls or libtls is not used [no]
 304   --enable-mediacodec      enable Android MediaCodec support [no]
 305   --enable-libmysofa       enable libmysofa, needed for sofalizer filter [no]
 306   --enable-openal          enable OpenAL 1.1 capture support [no]
 307   --enable-opencl          enable OpenCL processing [no]
 308   --enable-opengl          enable OpenGL rendering [no]
 309   --enable-openssl         enable openssl, needed for https support
 310                            if gnutls, libtls or mbedtls is not used [no]
 311   --enable-pocketsphinx    enable PocketSphinx, needed for asr filter [no]
 312   --disable-sndio          disable sndio support [autodetect]
 313   --disable-schannel       disable SChannel SSP, needed for TLS support on
 314                            Windows if openssl and gnutls are not used [autodetect]
 315   --disable-sdl2           disable sdl2 [autodetect]
 316   --disable-securetransport disable Secure Transport, needed for TLS support
 317                            on OSX if openssl and gnutls are not used [autodetect]
 318   --enable-vapoursynth     enable VapourSynth demuxer [no]
 319   --disable-xlib           disable xlib [autodetect]
 320   --disable-zlib           disable zlib [autodetect]
 321
 322   The following libraries provide various hardware acceleration features:
 323   --disable-amf            disable AMF video encoding code [autodetect]
 324   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
 325   --enable-cuda-nvcc       enable Nvidia CUDA compiler [no]
 326   --disable-cuda-llvm      disable CUDA compilation using clang [autodetect]
 327   --disable-cuvid          disable Nvidia CUVID support [autodetect]
 328   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
 329   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
 330   --disable-ffnvcodec      disable dynamically linked Nvidia code [autodetect]
 331   --enable-libdrm          enable DRM code (Linux) [no]
 332   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
 333   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
 334   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
 335   --disable-nvdec          disable Nvidia video decoding acceleration (via hwaccel) [autodetect]
 336   --disable-nvenc          disable Nvidia video encoding code [autodetect]
 337   --enable-omx             enable OpenMAX IL code [no]
 338   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
 339   --enable-rkmpp           enable Rockchip Media Process Platform code [no]
 340   --disable-v4l2-m2m       disable V4L2 mem2mem code [autodetect]
 341   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
 342   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
 343   --disable-videotoolbox   disable VideoToolbox code [autodetect]
 344
 345 Toolchain options:
 346   --arch=ARCH              select architecture [$arch]
 347   --cpu=CPU                select the minimum required CPU (affects
 348                            instruction selection, may crash on older CPUs)
 349   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 350   --progs-suffix=SUFFIX    program name suffix []
 351   --enable-cross-compile   assume a cross-compiler is used
 352   --sysroot=PATH           root of cross-build tree
 353   --sysinclude=PATH        location of cross-build system headers
 354   --target-os=OS           compiler targets OS [$target_os]
 355   --target-exec=CMD        command to run executables on target
 356   --target-path=DIR        path to view of build directory on target
 357   --target-samples=DIR     path to samples directory on target
 358   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 359   --toolchain=NAME         set tool defaults according to NAME
 360                            (gcc-asan, clang-asan, gcc-msan, clang-msan,
 361                            gcc-tsan, clang-tsan, gcc-usan, clang-usan,
 362                            valgrind-massif, valgrind-memcheck,
 363                            msvc, icl, gcov, llvm-cov, hardened)
 364   --nm=NM                  use nm tool NM [$nm_default]
 365   --ar=AR                  use archive tool AR [$ar_default]
 366   --as=AS                  use assembler AS [$as_default]
 367   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
 368   --strip=STRIP            use strip tool STRIP [$strip_default]
 369   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 370   --x86asmexe=EXE          use nasm-compatible assembler EXE [$x86asmexe_default]
 371   --cc=CC                  use C compiler CC [$cc_default]
 372   --cxx=CXX                use C compiler CXX [$cxx_default]
 373   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 374   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 375   --nvcc=NVCC              use Nvidia CUDA compiler NVCC or clang [$nvcc_default]
 376   --ld=LD                  use linker LD [$ld_default]
 377   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 378   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 379   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 380   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 381   --host-cc=HOSTCC         use host C compiler HOSTCC
 382   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 383   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 384   --host-ld=HOSTLD         use host linker HOSTLD
 385   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 386   --host-extralibs=HLIBS   use libs HLIBS when linking for host
 387   --host-os=OS             compiler host OS [$target_os]
 388   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 389   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 390   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 391   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 392   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 393   --extra-ldsoflags=ELDFLAGS add ELDFLAGS to LDSOFLAGS [$LDSOFLAGS]
 394   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 395   --extra-version=STRING   version string suffix []
 396   --optflags=OPTFLAGS      override optimization-related compiler flags
 397   --nvccflags=NVCCFLAGS    override nvcc flags [$nvccflags_default]
 398   --build-suffix=SUFFIX    library name suffix []
 399   --enable-pic             build position-independent code
 400   --enable-thumb           compile for Thumb instruction set
 401   --enable-lto             use link-time optimization
 402   --env="ENV=override"     override the environment variables
 403
 404 Advanced options (experts only):
 405   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 406   --custom-allocator=NAME  use a supported custom allocator
 407   --disable-symver         disable symbol versioning
 408   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 409   --disable-safe-bitstream-reader
 410                            disable buffer boundary checking in bitreaders
 411                            (faster, but may crash)
 412   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 413
 414 Optimization options (experts only):
 415   --disable-asm            disable all assembly optimizations
 416   --disable-altivec        disable AltiVec optimizations
 417   --disable-vsx            disable VSX optimizations
 418   --disable-power8         disable POWER8 optimizations
 419   --disable-amd3dnow       disable 3DNow! optimizations
 420   --disable-amd3dnowext    disable 3DNow! extended optimizations
 421   --disable-mmx            disable MMX optimizations
 422   --disable-mmxext         disable MMXEXT optimizations
 423   --disable-sse            disable SSE optimizations
 424   --disable-sse2           disable SSE2 optimizations
 425   --disable-sse3           disable SSE3 optimizations
 426   --disable-ssse3          disable SSSE3 optimizations
 427   --disable-sse4           disable SSE4 optimizations
 428   --disable-sse42          disable SSE4.2 optimizations
 429   --disable-avx            disable AVX optimizations
 430   --disable-xop            disable XOP optimizations
 431   --disable-fma3           disable FMA3 optimizations
 432   --disable-fma4           disable FMA4 optimizations
 433   --disable-avx2           disable AVX2 optimizations
 434   --disable-avx512         disable AVX-512 optimizations
 435   --disable-aesni          disable AESNI optimizations
 436   --disable-armv5te        disable armv5te optimizations
 437   --disable-armv6          disable armv6 optimizations
 438   --disable-armv6t2        disable armv6t2 optimizations
 439   --disable-vfp            disable VFP optimizations
 440   --disable-neon           disable NEON optimizations
 441   --disable-inline-asm     disable use of inline assembly
 442   --disable-x86asm         disable use of standalone x86 assembly
 443   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
 444   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 445   --disable-msa            disable MSA optimizations
 446   --disable-msa2           disable MSA2 optimizations
 447   --disable-mipsfpu        disable floating point MIPS optimizations
 448   --disable-mmi            disable Loongson SIMD optimizations
 449   --disable-fast-unaligned consider unaligned accesses slow
 450
 451 Developer options (useful when working on FFmpeg itself):
 452   --disable-debug          disable debugging symbols
 453   --enable-debug=LEVEL     set the debug level [$debuglevel]
 454   --disable-optimizations  disable compiler optimizations
 455   --enable-extra-warnings  enable more compiler warnings
 456   --disable-stripping      disable stripping of executables and shared libraries
 457   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 458                            2 causes a slowdown at runtime.
 459   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 460   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 461                            leaks and errors, using the specified valgrind binary.
 462                            Cannot be combined with --target-exec
 463   --enable-ftrapv          Trap arithmetic overflows
 464   --samples=PATH           location of test samples for FATE, if not set use
 465                            \$FATE_SAMPLES at make invocation time.
 466   --enable-neon-clobber-test check NEON registers for clobbering (should be
 467                            used only for debugging purposes)
 468   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 469                            should be used only for debugging purposes)
 470   --enable-random          randomly enable/disable components
 471   --disable-random
 472   --enable-random=LIST     randomly enable/disable specific components or
 473   --disable-random=LIST    component groups. LIST is a comma-separated list
 474                            of NAME[:PROB] entries where NAME is a component
 475                            (group) and PROB the probability associated with
 476                            NAME (default 0.5).
 477   --random-seed=VALUE      seed value for --enable/disable-random
 478   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 479                            (only applies to --disable-optimizations builds)
 480   --enable-ossfuzz         Enable building fuzzer tool
 481   --libfuzzer=PATH         path to libfuzzer
 482   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
 483                            in the name) of tests whose result is ignored
 484   --enable-linux-perf      enable Linux Performance Monitor API
 485
 486 NOTE: Object files are built at the place where configure is launched.
 487 EOF
 488   exit 0
 489 }
 490
 491 if test -t 1 && which tput >/dev/null 2>&1; then
 492     ncolors=$(tput colors)
 493     if test -n "$ncolors" && test $ncolors -ge 8; then
 494         bold_color=$(tput bold)
 495         warn_color=$(tput setaf 3)
 496         error_color=$(tput setaf 1)
 497         reset_color=$(tput sgr0)
 498     fi
 499     # 72 used instead of 80 since that's the default of pr
 500     ncols=$(tput cols)
 501 fi
 502 : ${ncols:=72}
 503
 504 log(){
 505     echo "$@" >> $logfile
 506 }
 507
 508 log_file(){
 509     log BEGIN "$1"
 510     log_file_i=1
 511     while IFS= read -r log_file_line; do
 512         printf '%5d\t%s\n' "$log_file_i" "$log_file_line"
 513         log_file_i=$(($log_file_i+1))
 514     done < "$1" >> "$logfile"
 515     log END "$1"
 516 }
 517
 518 warn(){
 519     log "WARNING: $*"
 520     WARNINGS="${WARNINGS}WARNING: $*\n"
 521 }
 522
 523 die(){
 524     log "$@"
 525     echo "$error_color$bold_color$@$reset_color"
 526     cat <<EOF
 527
 528 If you think configure made a mistake, make sure you are using the latest
 529 version from Git.  If the latest version fails, report the problem to the
 530 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 531 EOF
 532     if disabled logging; then
 533         cat <<EOF
 534 Rerun configure with logging enabled (do not use --disable-logging), and
 535 include the log this produces with your report.
 536 EOF
 537     else
 538         cat <<EOF
 539 Include the log file "$logfile" produced by configure as this will help
 540 solve the problem.
 541 EOF
 542     fi
 543     exit 1
 544 }
 545
 546 # Avoid locale weirdness, besides we really just want to translate ASCII.
 547 toupper(){
 548     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 549 }
 550
 551 tolower(){
 552     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 553 }
 554
 555 c_escape(){
 556     echo "$*" | sed 's/["\\]/\\\0/g'
 557 }
 558
 559 sh_quote(){
 560     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 561     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 562     echo "$v"
 563 }
 564
 565 cleanws(){
 566     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 567 }
 568
 569 filter(){
 570     pat=$1
 571     shift
 572     for v; do
 573         eval "case '$v' in $pat) printf '%s ' '$v' ;; esac"
 574     done
 575 }
 576
 577 filter_out(){
 578     pat=$1
 579     shift
 580     for v; do
 581         eval "case '$v' in $pat) ;; *) printf '%s ' '$v' ;; esac"
 582     done
 583 }
 584
 585 map(){
 586     m=$1
 587     shift
 588     for v; do eval $m; done
 589 }
 590
 591 add_suffix(){
 592     suffix=$1
 593     shift
 594     for v; do echo ${v}${suffix}; done
 595 }
 596
 597 remove_suffix(){
 598     suffix=$1
 599     shift
 600     for v; do echo ${v%$suffix}; done
 601 }
 602
 603 set_all(){
 604     value=$1
 605     shift
 606     for var in $*; do
 607         eval $var=$value
 608     done
 609 }
 610
 611 set_weak(){
 612     value=$1
 613     shift
 614     for var; do
 615         eval : \${$var:=$value}
 616     done
 617 }
 618
 619 sanitize_var_name(){
 620     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 621 }
 622
 623 set_sanitized(){
 624     var=$1
 625     shift
 626     eval $(sanitize_var_name "$var")='$*'
 627 }
 628
 629 get_sanitized(){
 630     eval echo \$$(sanitize_var_name "$1")
 631 }
 632
 633 pushvar(){
 634     for pvar in $*; do
 635         eval level=\${${pvar}_level:=0}
 636         eval ${pvar}_${level}="\$$pvar"
 637         eval ${pvar}_level=$(($level+1))
 638     done
 639 }
 640
 641 popvar(){
 642     for pvar in $*; do
 643         eval level=\${${pvar}_level:-0}
 644         test $level = 0 && continue
 645         eval level=$(($level-1))
 646         eval $pvar="\${${pvar}_${level}}"
 647         eval ${pvar}_level=$level
 648         eval unset ${pvar}_${level}
 649     done
 650 }
 651
 652 request(){
 653     for var in $*; do
 654         eval ${var}_requested=yes
 655         eval $var=
 656     done
 657 }
 658
 659 warn_if_gets_disabled(){
 660     for var in $*; do
 661         WARN_IF_GETS_DISABLED_LIST="$WARN_IF_GETS_DISABLED_LIST $var"
 662     done
 663 }
 664
 665 enable(){
 666     set_all yes $*
 667 }
 668
 669 disable(){
 670     set_all no $*
 671 }
 672
 673 disable_with_reason(){
 674     disable $1
 675     eval "${1}_disable_reason=\"$2\""
 676     if requested $1; then
 677         die "ERROR: $1 requested, but $2"
 678     fi
 679 }
 680
 681 enable_weak(){
 682     set_weak yes $*
 683 }
 684
 685 disable_weak(){
 686     set_weak no $*
 687 }
 688
 689 enable_sanitized(){
 690     for var; do
 691         enable $(sanitize_var_name $var)
 692     done
 693 }
 694
 695 disable_sanitized(){
 696     for var; do
 697         disable $(sanitize_var_name $var)
 698     done
 699 }
 700
 701 do_enable_deep(){
 702     for var; do
 703         enabled $var && continue
 704         set -- $var
 705         eval enable_deep \$${var}_select
 706         var=$1
 707         eval enable_deep_weak \$${var}_suggest
 708     done
 709 }
 710
 711 enable_deep(){
 712     do_enable_deep $*
 713     enable $*
 714 }
 715
 716 enable_deep_weak(){
 717     for var; do
 718         disabled $var && continue
 719         set -- $var
 720         do_enable_deep $var
 721         var=$1
 722         enable_weak $var
 723     done
 724 }
 725
 726 requested(){
 727     test "${1#!}" = "$1" && op="=" || op="!="
 728     eval test "x\$${1#!}_requested" $op "xyes"
 729 }
 730
 731 enabled(){
 732     test "${1#!}" = "$1" && op="=" || op="!="
 733     eval test "x\$${1#!}" $op "xyes"
 734 }
 735
 736 disabled(){
 737     test "${1#!}" = "$1" && op="=" || op="!="
 738     eval test "x\$${1#!}" $op "xno"
 739 }
 740
 741 enabled_all(){
 742     for opt; do
 743         enabled $opt || return 1
 744     done
 745 }
 746
 747 disabled_all(){
 748     for opt; do
 749         disabled $opt || return 1
 750     done
 751 }
 752
 753 enabled_any(){
 754     for opt; do
 755         enabled $opt && return 0
 756     done
 757 }
 758
 759 disabled_any(){
 760     for opt; do
 761         disabled $opt && return 0
 762     done
 763     return 1
 764 }
 765
 766 set_default(){
 767     for opt; do
 768         eval : \${$opt:=\$${opt}_default}
 769     done
 770 }
 771
 772 is_in(){
 773     value=$1
 774     shift
 775     for var in $*; do
 776         [ $var = $value ] && return 0
 777     done
 778     return 1
 779 }
 780
 781 # The cfg loop is very hot (several thousands iterations), and in bash also
 782 # potentialy quite slow. Try to abort the iterations early, preferably without
 783 # calling functions. 70%+ of the time cfg is already done or without deps.
 784 check_deps(){
 785     for cfg; do
 786         eval [ x\$${cfg}_checking = xdone ] && continue
 787         eval [ x\$${cfg}_checking = xinprogress ] && die "Circular dependency for $cfg."
 788
 789         eval "
 790         dep_all=\$${cfg}_deps
 791         dep_any=\$${cfg}_deps_any
 792         dep_con=\$${cfg}_conflict
 793         dep_sel=\$${cfg}_select
 794         dep_sgs=\$${cfg}_suggest
 795         dep_ifa=\$${cfg}_if
 796         dep_ifn=\$${cfg}_if_any
 797         "
 798
 799         # most of the time here $cfg has no deps - avoid costly no-op work
 800         if [ "$dep_all$dep_any$dep_con$dep_sel$dep_sgs$dep_ifa$dep_ifn" ]; then
 801             eval ${cfg}_checking=inprogress
 802
 803             set -- $cfg "$dep_all" "$dep_any" "$dep_con" "$dep_sel" "$dep_sgs" "$dep_ifa" "$dep_ifn"
 804             check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
 805             cfg=$1; dep_all=$2; dep_any=$3; dep_con=$4; dep_sel=$5 dep_sgs=$6; dep_ifa=$7; dep_ifn=$8
 806
 807             [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 808             [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 809             enabled_all  $dep_all || { disable_with_reason $cfg "not all dependencies are satisfied: $dep_all"; }
 810             enabled_any  $dep_any || { disable_with_reason $cfg "not any dependency is satisfied: $dep_any"; }
 811             disabled_all $dep_con || { disable_with_reason $cfg "some conflicting dependencies are unsatisfied: $dep_con"; }
 812             disabled_any $dep_sel && { disable_with_reason $cfg "some selected dependency is unsatisfied: $dep_sel"; }
 813
 814             enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
 815
 816             for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
 817                 # filter out library deps, these do not belong in extralibs
 818                 is_in $dep $LIBRARY_LIST && continue
 819                 enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
 820             done
 821         fi
 822
 823         eval ${cfg}_checking=done
 824     done
 825 }
 826
 827 print_config(){
 828     pfx=$1
 829     files=$2
 830     shift 2
 831     map 'eval echo "$v \${$v:-no}"' "$@" |
 832     awk "BEGIN { split(\"$files\", files) }
 833         {
 834             c = \"$pfx\" toupper(\$1);
 835             v = \$2;
 836             sub(/yes/, 1, v);
 837             sub(/no/,  0, v);
 838             for (f in files) {
 839                 file = files[f];
 840                 if (file ~ /\\.h\$/) {
 841                     printf(\"#define %s %d\\n\", c, v) >>file;
 842                 } else if (file ~ /\\.asm\$/) {
 843                     printf(\"%%define %s %d\\n\", c, v) >>file;
 844                 } else if (file ~ /\\.mak\$/) {
 845                     n = -v ? \"\" : \"!\";
 846                     printf(\"%s%s=yes\\n\", n, c) >>file;
 847                 } else if (file ~ /\\.texi\$/) {
 848                     pre = -v ? \"\" : \"@c \";
 849                     yesno = \$2;
 850                     c2 = tolower(c);
 851                     gsub(/_/, \"-\", c2);
 852                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 853                 }
 854             }
 855         }"
 856 }
 857
 858 print_enabled(){
 859     suf=$1
 860     shift
 861     for v; do
 862         enabled $v && printf "%s\n" ${v%$suf}
 863     done
 864 }
 865
 866 append(){
 867     var=$1
 868     shift
 869     eval "$var=\"\$$var $*\""
 870 }
 871
 872 prepend(){
 873     var=$1
 874     shift
 875     eval "$var=\"$* \$$var\""
 876 }
 877
 878 reverse () {
 879     eval '
 880         reverse_out=
 881         for v in $'$1'; do
 882             reverse_out="$v $reverse_out"
 883         done
 884         '$1'=$reverse_out
 885     '
 886 }
 887
 888 # keeps the last occurence of each non-unique item
 889 unique(){
 890     unique_out=
 891     eval unique_in=\$$1
 892     reverse unique_in
 893     for v in $unique_in; do
 894         # " $unique_out" +space such that every item is surrounded with spaces
 895         case " $unique_out" in *" $v "*) continue; esac  # already in list
 896         unique_out="$unique_out$v "
 897     done
 898     reverse unique_out
 899     eval $1=\$unique_out
 900 }
 901
 902 resolve(){
 903     resolve_out=
 904     eval resolve_in=\$$1
 905     for v in $resolve_in; do
 906         eval 'resolve_out="$resolve_out$'$v' "'
 907     done
 908     eval $1=\$resolve_out
 909 }
 910
 911 add_cppflags(){
 912     append CPPFLAGS "$@"
 913 }
 914
 915 add_cflags(){
 916     append CFLAGS $($cflags_filter "$@")
 917 }
 918
 919 add_cflags_headers(){
 920     append CFLAGS_HEADERS $($cflags_filter "$@")
 921 }
 922
 923 add_cxxflags(){
 924     append CXXFLAGS $($cflags_filter "$@")
 925 }
 926
 927 add_objcflags(){
 928     append OBJCFLAGS $($objcflags_filter "$@")
 929 }
 930
 931 add_asflags(){
 932     append ASFLAGS $($asflags_filter "$@")
 933 }
 934
 935 add_ldflags(){
 936     append LDFLAGS $($ldflags_filter "$@")
 937 }
 938
 939 add_ldexeflags(){
 940     append LDEXEFLAGS $($ldflags_filter "$@")
 941 }
 942
 943 add_ldsoflags(){
 944     append LDSOFLAGS $($ldflags_filter "$@")
 945 }
 946
 947 add_extralibs(){
 948     prepend extralibs $($ldflags_filter "$@")
 949 }
 950
 951 add_stripflags(){
 952     append ASMSTRIPFLAGS "$@"
 953 }
 954
 955 add_host_cppflags(){
 956     append host_cppflags "$@"
 957 }
 958
 959 add_host_cflags(){
 960     append host_cflags $($host_cflags_filter "$@")
 961 }
 962
 963 add_host_ldflags(){
 964     append host_ldflags $($host_ldflags_filter "$@")
 965 }
 966
 967 add_compat(){
 968     append compat_objs $1
 969     shift
 970     map 'add_cppflags -D$v' "$@"
 971 }
 972
 973 test_cmd(){
 974     log "$@"
 975     "$@" >> $logfile 2>&1
 976 }
 977
 978 test_stat(){
 979     log test_stat "$@"
 980     stat "$1" >> $logfile 2>&1
 981 }
 982
 983 cc_e(){
 984     eval printf '%s\\n' $CC_E
 985 }
 986
 987 cc_o(){
 988     eval printf '%s\\n' $CC_O
 989 }
 990
 991 as_o(){
 992     eval printf '%s\\n' $AS_O
 993 }
 994
 995 x86asm_o(){
 996     eval printf '%s\\n' $X86ASM_O
 997 }
 998
 999 ld_o(){
1000     eval printf '%s\\n' $LD_O
1001 }
1002
1003 hostcc_e(){
1004     eval printf '%s\\n' $HOSTCC_E
1005 }
1006
1007 hostcc_o(){
1008     eval printf '%s\\n' $HOSTCC_O
1009 }
1010
1011 nvcc_o(){
1012     eval printf '%s\\n' $NVCC_O
1013 }
1014
1015 test_cc(){
1016     log test_cc "$@"
1017     cat > $TMPC
1018     log_file $TMPC
1019     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
1020 }
1021
1022 test_cxx(){
1023     log test_cxx "$@"
1024     cat > $TMPCPP
1025     log_file $TMPCPP
1026     test_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
1027 }
1028
1029 test_objcc(){
1030     log test_objcc "$@"
1031     cat > $TMPM
1032     log_file $TMPM
1033     test_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
1034 }
1035
1036 test_nvcc(){
1037     log test_nvcc "$@"
1038     cat > $TMPCU
1039     log_file $TMPCU
1040     tmpcu_=$TMPCU
1041     tmpo_=$TMPO
1042     [ -x "$(command -v cygpath)" ] && tmpcu_=$(cygpath -m $tmpcu_) && tmpo_=$(cygpath -m $tmpo_)
1043     test_cmd $nvcc $nvccflags "$@" $NVCC_C $(nvcc_o $tmpo_) $tmpcu_
1044 }
1045
1046 check_nvcc() {
1047     log check_nvcc "$@"
1048     name=$1
1049     shift 1
1050     disabled $name && return
1051     disable $name
1052     test_nvcc "$@" <<EOF && enable $name
1053 extern "C" {
1054     __global__ void hello(unsigned char *data) {}
1055 }
1056 EOF
1057 }
1058
1059 test_cpp(){
1060     log test_cpp "$@"
1061     cat > $TMPC
1062     log_file $TMPC
1063     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
1064 }
1065
1066 test_as(){
1067     log test_as "$@"
1068     cat > $TMPS
1069     log_file $TMPS
1070     test_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
1071 }
1072
1073 test_x86asm(){
1074     log test_x86asm "$@"
1075     echo "$1" > $TMPASM
1076     log_file $TMPASM
1077     shift
1078     test_cmd $x86asmexe $X86ASMFLAGS -Werror "$@" $(x86asm_o $TMPO) $TMPASM
1079 }
1080
1081 check_cmd(){
1082     log check_cmd "$@"
1083     cmd=$1
1084     disabled $cmd && return
1085     disable $cmd
1086     test_cmd $@ && enable $cmd
1087 }
1088
1089 check_as(){
1090     log check_as "$@"
1091     name=$1
1092     code=$2
1093     shift 2
1094     disable $name
1095     test_as $@ <<EOF && enable $name
1096 $code
1097 EOF
1098 }
1099
1100 check_inline_asm(){
1101     log check_inline_asm "$@"
1102     name="$1"
1103     code="$2"
1104     shift 2
1105     disable $name
1106     test_cc "$@" <<EOF && enable $name
1107 void foo(void){ __asm__ volatile($code); }
1108 EOF
1109 }
1110
1111 check_inline_asm_flags(){
1112     log check_inline_asm_flags "$@"
1113     name="$1"
1114     code="$2"
1115     flags=''
1116     shift 2
1117     while [ "$1" != "" ]; do
1118       append flags $1
1119       shift
1120     done;
1121     disable $name
1122     cat > $TMPC <<EOF
1123 void foo(void){ __asm__ volatile($code); }
1124 EOF
1125     log_file $TMPC
1126     test_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
1127     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
1128 }
1129
1130 check_insn(){
1131     log check_insn "$@"
1132     check_inline_asm ${1}_inline "\"$2\""
1133     check_as ${1}_external "$2"
1134 }
1135
1136 check_x86asm(){
1137     log check_x86asm "$@"
1138     name=$1
1139     shift
1140     disable $name
1141     test_x86asm "$@" && enable $name
1142 }
1143
1144 test_ld(){
1145     log test_ld "$@"
1146     type=$1
1147     shift 1
1148     flags=$(filter_out '-l*|*.so' $@)
1149     libs=$(filter '-l*|*.so' $@)
1150     test_$type $($cflags_filter $flags) || return
1151     flags=$($ldflags_filter $flags)
1152     libs=$($ldflags_filter $libs)
1153     test_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1154 }
1155
1156 check_ld(){
1157     log check_ld "$@"
1158     type=$1
1159     name=$2
1160     shift 2
1161     disable $name
1162     test_ld $type $@ && enable $name
1163 }
1164
1165 print_include(){
1166     hdr=$1
1167     test "${hdr%.h}" = "${hdr}" &&
1168         echo "#include $hdr"    ||
1169         echo "#include <$hdr>"
1170 }
1171
1172 test_code(){
1173     log test_code "$@"
1174     check=$1
1175     headers=$2
1176     code=$3
1177     shift 3
1178     {
1179         for hdr in $headers; do
1180             print_include $hdr
1181         done
1182         echo "int main(void) { $code; return 0; }"
1183     } | test_$check "$@"
1184 }
1185
1186 check_cppflags(){
1187     log check_cppflags "$@"
1188     test_cpp "$@" <<EOF && append CPPFLAGS "$@"
1189 #include <stdlib.h>
1190 EOF
1191 }
1192
1193 test_cflags(){
1194     log test_cflags "$@"
1195     set -- $($cflags_filter "$@")
1196     test_cc "$@" <<EOF
1197 int x;
1198 EOF
1199 }
1200
1201 check_cflags(){
1202     log check_cflags "$@"
1203     test_cflags "$@" && add_cflags "$@"
1204 }
1205
1206 check_cxxflags(){
1207     log check_cxxflags "$@"
1208     set -- $($cflags_filter "$@")
1209     test_cxx "$@" <<EOF && append CXXFLAGS "$@"
1210 int x;
1211 EOF
1212 }
1213
1214 test_objcflags(){
1215     log test_objcflags "$@"
1216     set -- $($objcflags_filter "$@")
1217     test_objcc "$@" <<EOF
1218 int x;
1219 EOF
1220 }
1221
1222 check_objcflags(){
1223     log check_objcflags "$@"
1224     test_objcflags "$@" && add_objcflags "$@"
1225 }
1226
1227 test_ldflags(){
1228     log test_ldflags "$@"
1229     set -- $($ldflags_filter "$@")
1230     test_ld "cc" "$@" <<EOF
1231 int main(void){ return 0; }
1232 EOF
1233 }
1234
1235 check_ldflags(){
1236     log check_ldflags "$@"
1237     test_ldflags "$@" && add_ldflags "$@"
1238 }
1239
1240 test_stripflags(){
1241     log test_stripflags "$@"
1242     # call test_cc to get a fresh TMPO
1243     test_cc <<EOF
1244 int main(void) { return 0; }
1245 EOF
1246     test_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1247 }
1248
1249 check_stripflags(){
1250     log check_stripflags "$@"
1251     test_stripflags "$@" && add_stripflags "$@"
1252 }
1253
1254 check_headers(){
1255     log check_headers "$@"
1256     headers=$1
1257     shift
1258     disable_sanitized $headers
1259     {
1260         for hdr in $headers; do
1261             print_include $hdr
1262         done
1263         echo "int x;"
1264     } | test_cpp "$@" && enable_sanitized $headers
1265 }
1266
1267 check_header_objcc(){
1268     log check_header_objcc "$@"
1269     rm -f -- "$TMPO"
1270     header=$1
1271     shift
1272     disable_sanitized $header
1273     {
1274        echo "#include <$header>"
1275        echo "int main(void) { return 0; }"
1276     } | test_objcc && test_stat "$TMPO" && enable_sanitized $header
1277 }
1278
1279 check_apple_framework(){
1280     log check_apple_framework "$@"
1281     framework="$1"
1282     name="$(tolower $framework)"
1283     header="${framework}/${framework}.h"
1284     disable $name
1285     check_header_objcc $header &&
1286         enable $name && eval ${name}_extralibs='"-framework $framework"'
1287 }
1288
1289 check_func(){
1290     log check_func "$@"
1291     func=$1
1292     shift
1293     disable $func
1294     test_ld "cc" "$@" <<EOF && enable $func
1295 extern int $func();
1296 int main(void){ $func(); }
1297 EOF
1298 }
1299
1300 check_complexfunc(){
1301     log check_complexfunc "$@"
1302     func=$1
1303     narg=$2
1304     shift 2
1305     test $narg = 2 && args="f, g" || args="f * I"
1306     disable $func
1307     test_ld "cc" "$@" <<EOF && enable $func
1308 #include <complex.h>
1309 #include <math.h>
1310 float foo(complex float f, complex float g) { return $func($args); }
1311 int main(void){ return (int) foo; }
1312 EOF
1313 }
1314
1315 check_mathfunc(){
1316     log check_mathfunc "$@"
1317     func=$1
1318     narg=$2
1319     shift 2
1320     test $narg = 2 && args="f, g" || args="f"
1321     disable $func
1322     test_ld "cc" "$@" <<EOF && enable $func
1323 #include <math.h>
1324 float foo(float f, float g) { return $func($args); }
1325 int main(void){ return (int) foo; }
1326 EOF
1327 }
1328
1329 check_func_headers(){
1330     log check_func_headers "$@"
1331     headers=$1
1332     funcs=$2
1333     shift 2
1334     {
1335         for hdr in $headers; do
1336             print_include $hdr
1337         done
1338         echo "#include <stdint.h>"
1339         for func in $funcs; do
1340             echo "long check_$func(void) { return (long) $func; }"
1341         done
1342         echo "int main(void) { int ret = 0;"
1343         # LTO could optimize out the test functions without this
1344         for func in $funcs; do
1345             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1346         done
1347         echo "return ret; }"
1348     } | test_ld "cc" "$@" && enable $funcs && enable_sanitized $headers
1349 }
1350
1351 check_class_headers_cpp(){
1352     log check_class_headers_cpp "$@"
1353     headers=$1
1354     classes=$2
1355     shift 2
1356     {
1357         for hdr in $headers; do
1358             echo "#include <$hdr>"
1359         done
1360         echo "int main(void) { "
1361         i=1
1362         for class in $classes; do
1363             echo "$class obj$i;"
1364             i=$(expr $i + 1)
1365         done
1366         echo "return 0; }"
1367     } | test_ld "cxx" "$@" && enable $funcs && enable_sanitized $headers
1368 }
1369
1370 test_cpp_condition(){
1371     log test_cpp_condition "$@"
1372     header=$1
1373     condition=$2
1374     shift 2
1375     test_cpp "$@" <<EOF
1376 #include <$header>
1377 #if !($condition)
1378 #error "unsatisfied condition: $condition"
1379 #endif
1380 EOF
1381 }
1382
1383 check_cpp_condition(){
1384     log check_cpp_condition "$@"
1385     name=$1
1386     shift 1
1387     disable $name
1388     test_cpp_condition "$@" && enable $name
1389 }
1390
1391 test_cflags_cc(){
1392     log test_cflags_cc "$@"
1393     flags=$1
1394     header=$2
1395     condition=$3
1396     shift 3
1397     set -- $($cflags_filter "$flags")
1398     test_cc "$@" <<EOF
1399 #include <$header>
1400 #if !($condition)
1401 #error "unsatisfied condition: $condition"
1402 #endif
1403 EOF
1404 }
1405
1406 check_lib(){
1407     log check_lib "$@"
1408     name="$1"
1409     headers="$2"
1410     funcs="$3"
1411     shift 3
1412     disable $name
1413     check_func_headers "$headers" "$funcs" "$@" &&
1414         enable $name && eval ${name}_extralibs="\$@"
1415 }
1416
1417 check_lib_cpp(){
1418     log check_lib_cpp "$@"
1419     name="$1"
1420     headers="$2"
1421     classes="$3"
1422     shift 3
1423     disable $name
1424     check_class_headers_cpp "$headers" "$classes" "$@" &&
1425         enable $name && eval ${name}_extralibs="\$@"
1426 }
1427
1428 test_pkg_config(){
1429     log test_pkg_config "$@"
1430     name="$1"
1431     pkg_version="$2"
1432     pkg="${2%% *}"
1433     headers="$3"
1434     funcs="$4"
1435     shift 4
1436     disable $name
1437     test_cmd $pkg_config --exists --print-errors $pkg_version || return
1438     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1439     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1440     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1441         enable $name &&
1442         set_sanitized "${name}_cflags"    $pkg_cflags &&
1443         set_sanitized "${name}_extralibs" $pkg_libs
1444 }
1445
1446 check_pkg_config(){
1447     log check_pkg_config "$@"
1448     name="$1"
1449     test_pkg_config "$@" &&
1450         eval add_cflags \$${name}_cflags
1451 }
1452
1453 test_exec(){
1454     test_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1455 }
1456
1457 check_exec_crash(){
1458     log check_exec_crash "$@"
1459     code=$(cat)
1460
1461     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1462     # are safe but may not be available everywhere.  Thus we use
1463     # raise(SIGTERM) instead.  The check is run in a subshell so we
1464     # can redirect the "Terminated" message from the shell.  SIGBUS
1465     # is not defined by standard C so it is used conditionally.
1466
1467     (test_exec "$@") >> $logfile 2>&1 <<EOF
1468 #include <signal.h>
1469 static void sighandler(int sig){
1470     raise(SIGTERM);
1471 }
1472 int foo(void){
1473     $code
1474 }
1475 int (*func_ptr)(void) = foo;
1476 int main(void){
1477     signal(SIGILL, sighandler);
1478     signal(SIGFPE, sighandler);
1479     signal(SIGSEGV, sighandler);
1480 #ifdef SIGBUS
1481     signal(SIGBUS, sighandler);
1482 #endif
1483     return func_ptr();
1484 }
1485 EOF
1486 }
1487
1488 check_type(){
1489     log check_type "$@"
1490     headers=$1
1491     type=$2
1492     shift 2
1493     disable_sanitized "$type"
1494     test_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1495 }
1496
1497 check_struct(){
1498     log check_struct "$@"
1499     headers=$1
1500     struct=$2
1501     member=$3
1502     shift 3
1503     disable_sanitized "${struct}_${member}"
1504     test_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1505         enable_sanitized "${struct}_${member}"
1506 }
1507
1508 check_builtin(){
1509     log check_builtin "$@"
1510     name=$1
1511     headers=$2
1512     builtin=$3
1513     shift 3
1514     disable "$name"
1515     test_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1516 }
1517
1518 check_compile_assert(){
1519     log check_compile_assert "$@"
1520     name=$1
1521     headers=$2
1522     condition=$3
1523     shift 3
1524     disable "$name"
1525     test_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1526 }
1527
1528 check_cc(){
1529     log check_cc "$@"
1530     name=$1
1531     shift
1532     disable "$name"
1533     test_code cc "$@" && enable "$name"
1534 }
1535
1536 require(){
1537     log require "$@"
1538     name_version="$1"
1539     name="${1%% *}"
1540     shift
1541     check_lib $name "$@" || die "ERROR: $name_version not found"
1542 }
1543
1544 require_cc(){
1545     log require_cc "$@"
1546     name="$1"
1547     check_cc "$@" || die "ERROR: $name failed"
1548 }
1549
1550 require_cpp(){
1551     name="$1"
1552     headers="$2"
1553     classes="$3"
1554     shift 3
1555     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1556 }
1557
1558 require_headers(){
1559     log require_headers "$@"
1560     headers="$1"
1561     check_headers "$@" || die "ERROR: $headers not found"
1562 }
1563
1564 require_cpp_condition(){
1565     log require_cpp_condition "$@"
1566     condition="$3"
1567     check_cpp_condition "$@" || die "ERROR: $condition not satisfied"
1568 }
1569
1570 require_pkg_config(){
1571     log require_pkg_config "$@"
1572     pkg_version="$2"
1573     check_pkg_config "$@" || die "ERROR: $pkg_version not found using pkg-config$pkg_config_fail_message"
1574 }
1575
1576 test_host_cc(){
1577     log test_host_cc "$@"
1578     cat > $TMPC
1579     log_file $TMPC
1580     test_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1581 }
1582
1583 test_host_cpp(){
1584     log test_host_cpp "$@"
1585     cat > $TMPC
1586     log_file $TMPC
1587     test_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1588 }
1589
1590 check_host_cppflags(){
1591     log check_host_cppflags "$@"
1592     test_host_cpp "$@" <<EOF && append host_cppflags "$@"
1593 #include <stdlib.h>
1594 EOF
1595 }
1596
1597 check_host_cflags(){
1598     log check_host_cflags "$@"
1599     set -- $($host_cflags_filter "$@")
1600     test_host_cc "$@" <<EOF && append host_cflags "$@"
1601 int x;
1602 EOF
1603 }
1604
1605 test_host_cpp_condition(){
1606     log test_host_cpp_condition "$@"
1607     header=$1
1608     condition=$2
1609     shift 2
1610     test_host_cpp "$@" <<EOF
1611 #include <$header>
1612 #if !($condition)
1613 #error "unsatisfied condition: $condition"
1614 #endif
1615 EOF
1616 }
1617
1618 check_host_cpp_condition(){
1619     log check_host_cpp_condition "$@"
1620     name=$1
1621     shift 1
1622     disable $name
1623     test_host_cpp_condition "$@" && enable $name
1624 }
1625
1626 cp_if_changed(){
1627     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1628     mkdir -p "$(dirname $2)"
1629     cp -f "$1" "$2"
1630 }
1631
1632 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1633 # system-dependent things.
1634
1635 AVCODEC_COMPONENTS="
1636     bsfs
1637     decoders
1638     encoders
1639     hwaccels
1640     parsers
1641 "
1642
1643 AVDEVICE_COMPONENTS="
1644     indevs
1645     outdevs
1646 "
1647
1648 AVFILTER_COMPONENTS="
1649     filters
1650 "
1651
1652 AVFORMAT_COMPONENTS="
1653     demuxers
1654     muxers
1655     protocols
1656 "
1657
1658 COMPONENT_LIST="
1659     $AVCODEC_COMPONENTS
1660     $AVDEVICE_COMPONENTS
1661     $AVFILTER_COMPONENTS
1662     $AVFORMAT_COMPONENTS
1663 "
1664
1665 EXAMPLE_LIST="
1666     avio_dir_cmd_example
1667     avio_reading_example
1668     decode_audio_example
1669     decode_video_example
1670     demuxing_decoding_example
1671     encode_audio_example
1672     encode_video_example
1673     extract_mvs_example
1674     filter_audio_example
1675     filtering_audio_example
1676     filtering_video_example
1677     http_multiclient_example
1678     hw_decode_example
1679     metadata_example
1680     muxing_example
1681     qsvdec_example
1682     remuxing_example
1683     resampling_audio_example
1684     scaling_video_example
1685     transcode_aac_example
1686     transcoding_example
1687     vaapi_encode_example
1688     vaapi_transcode_example
1689 "
1690
1691 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1692     alsa
1693     appkit
1694     avfoundation
1695     bzlib
1696     coreimage
1697     iconv
1698     libxcb
1699     libxcb_shm
1700     libxcb_shape
1701     libxcb_xfixes
1702     lzma
1703     schannel
1704     sdl2
1705     securetransport
1706     sndio
1707     xlib
1708     zlib
1709 "
1710
1711 EXTERNAL_LIBRARY_GPL_LIST="
1712     avisynth
1713     frei0r
1714     libcdio
1715     libdavs2
1716     librubberband
1717     libvidstab
1718     libx264
1719     libx265
1720     libxavs
1721     libxavs2
1722     libxvid
1723 "
1724
1725 EXTERNAL_LIBRARY_NONFREE_LIST="
1726     decklink
1727     libfdk_aac
1728     openssl
1729     libtls
1730 "
1731
1732 EXTERNAL_LIBRARY_VERSION3_LIST="
1733     gmp
1734     libaribb24
1735     liblensfun
1736     libopencore_amrnb
1737     libopencore_amrwb
1738     libvmaf
1739     libvo_amrwbenc
1740     mbedtls
1741     rkmpp
1742 "
1743
1744 EXTERNAL_LIBRARY_GPLV3_LIST="
1745     libsmbclient
1746 "
1747
1748 EXTERNAL_LIBRARY_LIST="
1749     $EXTERNAL_LIBRARY_GPL_LIST
1750     $EXTERNAL_LIBRARY_NONFREE_LIST
1751     $EXTERNAL_LIBRARY_VERSION3_LIST
1752     $EXTERNAL_LIBRARY_GPLV3_LIST
1753     chromaprint
1754     gcrypt
1755     gnutls
1756     jni
1757     ladspa
1758     libaom
1759     libass
1760     libbluray
1761     libbs2b
1762     libcaca
1763     libcelt
1764     libcodec2
1765     libdav1d
1766     libdc1394
1767     libdrm
1768     libflite
1769     libfontconfig
1770     libfreetype
1771     libfribidi
1772     libgme
1773     libgsm
1774     libiec61883
1775     libilbc
1776     libjack
1777     libklvanc
1778     libkvazaar
1779     libmodplug
1780     libmp3lame
1781     libmysofa
1782     libopencv
1783     libopenh264
1784     libopenjpeg
1785     libopenmpt
1786     libopus
1787     libpulse
1788     librav1e
1789     librsvg
1790     librtmp
1791     libshine
1792     libsmbclient
1793     libsnappy
1794     libsoxr
1795     libspeex
1796     libsrt
1797     libssh
1798     libtensorflow
1799     libtesseract
1800     libtheora
1801     libtwolame
1802     libv4l2
1803     libvorbis
1804     libvpx
1805     libwavpack
1806     libwebp
1807     libxml2
1808     libzimg
1809     libzmq
1810     libzvbi
1811     lv2
1812     mediacodec
1813     openal
1814     opengl
1815     pocketsphinx
1816     vapoursynth
1817 "
1818
1819 HWACCEL_AUTODETECT_LIBRARY_LIST="
1820     amf
1821     audiotoolbox
1822     crystalhd
1823     cuda
1824     cuda_llvm
1825     cuvid
1826     d3d11va
1827     dxva2
1828     ffnvcodec
1829     nvdec
1830     nvenc
1831     vaapi
1832     vdpau
1833     videotoolbox
1834     v4l2_m2m
1835     xvmc
1836 "
1837
1838 # catchall list of things that require external libs to link
1839 EXTRALIBS_LIST="
1840     cpu_init
1841     cws2fws
1842 "
1843
1844 HWACCEL_LIBRARY_NONFREE_LIST="
1845     cuda_nvcc
1846     cuda_sdk
1847     libnpp
1848 "
1849
1850 HWACCEL_LIBRARY_LIST="
1851     $HWACCEL_LIBRARY_NONFREE_LIST
1852     libmfx
1853     mmal
1854     omx
1855     opencl
1856 "
1857
1858 DOCUMENT_LIST="
1859     doc
1860     htmlpages
1861     manpages
1862     podpages
1863     txtpages
1864 "
1865
1866 FEATURE_LIST="
1867     ftrapv
1868     gray
1869     hardcoded_tables
1870     omx_rpi
1871     runtime_cpudetect
1872     safe_bitstream_reader
1873     shared
1874     small
1875     static
1876     swscale_alpha
1877 "
1878
1879 # this list should be kept in linking order
1880 LIBRARY_LIST="
1881     avdevice
1882     avfilter
1883     swscale
1884     postproc
1885     avformat
1886     avcodec
1887     swresample
1888     avresample
1889     avutil
1890 "
1891
1892 LICENSE_LIST="
1893     gpl
1894     nonfree
1895     version3
1896 "
1897
1898 PROGRAM_LIST="
1899     ffplay
1900     ffprobe
1901     ffmpeg
1902 "
1903
1904 SUBSYSTEM_LIST="
1905     dct
1906     dwt
1907     error_resilience
1908     faan
1909     fast_unaligned
1910     fft
1911     lsp
1912     lzo
1913     mdct
1914     pixelutils
1915     network
1916     rdft
1917 "
1918
1919 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1920 CONFIG_LIST="
1921     $DOCUMENT_LIST
1922     $EXAMPLE_LIST
1923     $EXTERNAL_LIBRARY_LIST
1924     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1925     $HWACCEL_LIBRARY_LIST
1926     $HWACCEL_AUTODETECT_LIBRARY_LIST
1927     $FEATURE_LIST
1928     $LICENSE_LIST
1929     $LIBRARY_LIST
1930     $PROGRAM_LIST
1931     $SUBSYSTEM_LIST
1932     autodetect
1933     fontconfig
1934     linux_perf
1935     memory_poisoning
1936     neon_clobber_test
1937     ossfuzz
1938     pic
1939     thumb
1940     valgrind_backtrace
1941     xmm_clobber_test
1942     $COMPONENT_LIST
1943 "
1944
1945 THREADS_LIST="
1946     pthreads
1947     os2threads
1948     w32threads
1949 "
1950
1951 ATOMICS_LIST="
1952     atomics_gcc
1953     atomics_suncc
1954     atomics_win32
1955 "
1956
1957 AUTODETECT_LIBS="
1958     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1959     $HWACCEL_AUTODETECT_LIBRARY_LIST
1960     $THREADS_LIST
1961 "
1962
1963 ARCH_LIST="
1964     aarch64
1965     alpha
1966     arm
1967     avr32
1968     avr32_ap
1969     avr32_uc
1970     bfin
1971     ia64
1972     m68k
1973     mips
1974     mips64
1975     parisc
1976     ppc
1977     ppc64
1978     s390
1979     sh4
1980     sparc
1981     sparc64
1982     tilegx
1983     tilepro
1984     tomi
1985     x86
1986     x86_32
1987     x86_64
1988 "
1989
1990 ARCH_EXT_LIST_ARM="
1991     armv5te
1992     armv6
1993     armv6t2
1994     armv8
1995     neon
1996     vfp
1997     vfpv3
1998     setend
1999 "
2000
2001 ARCH_EXT_LIST_MIPS="
2002     mipsfpu
2003     mips32r2
2004     mips32r5
2005     mips64r2
2006     mips32r6
2007     mips64r6
2008     mipsdsp
2009     mipsdspr2
2010     msa
2011     msa2
2012 "
2013
2014 ARCH_EXT_LIST_LOONGSON="
2015     loongson2
2016     loongson3
2017     mmi
2018 "
2019
2020 ARCH_EXT_LIST_X86_SIMD="
2021     aesni
2022     amd3dnow
2023     amd3dnowext
2024     avx
2025     avx2
2026     avx512
2027     fma3
2028     fma4
2029     mmx
2030     mmxext
2031     sse
2032     sse2
2033     sse3
2034     sse4
2035     sse42
2036     ssse3
2037     xop
2038 "
2039
2040 ARCH_EXT_LIST_PPC="
2041     altivec
2042     dcbzl
2043     ldbrx
2044     power8
2045     ppc4xx
2046     vsx
2047 "
2048
2049 ARCH_EXT_LIST_X86="
2050     $ARCH_EXT_LIST_X86_SIMD
2051     cpunop
2052     i686
2053 "
2054
2055 ARCH_EXT_LIST="
2056     $ARCH_EXT_LIST_ARM
2057     $ARCH_EXT_LIST_PPC
2058     $ARCH_EXT_LIST_X86
2059     $ARCH_EXT_LIST_MIPS
2060     $ARCH_EXT_LIST_LOONGSON
2061 "
2062
2063 ARCH_FEATURES="
2064     aligned_stack
2065     fast_64bit
2066     fast_clz
2067     fast_cmov
2068     local_aligned
2069     simd_align_16
2070     simd_align_32
2071     simd_align_64
2072 "
2073
2074 BUILTIN_LIST="
2075     atomic_cas_ptr
2076     machine_rw_barrier
2077     MemoryBarrier
2078     mm_empty
2079     rdtsc
2080     sem_timedwait
2081     sync_val_compare_and_swap
2082 "
2083 HAVE_LIST_CMDLINE="
2084     inline_asm
2085     symver
2086     x86asm
2087 "
2088
2089 HAVE_LIST_PUB="
2090     bigendian
2091     fast_unaligned
2092 "
2093
2094 HEADERS_LIST="
2095     arpa_inet_h
2096     asm_types_h
2097     cdio_paranoia_h
2098     cdio_paranoia_paranoia_h
2099     cuda_h
2100     dispatch_dispatch_h
2101     dev_bktr_ioctl_bt848_h
2102     dev_bktr_ioctl_meteor_h
2103     dev_ic_bt8xx_h
2104     dev_video_bktr_ioctl_bt848_h
2105     dev_video_meteor_ioctl_meteor_h
2106     direct_h
2107     dirent_h
2108     dxgidebug_h
2109     dxva_h
2110     ES2_gl_h
2111     gsm_h
2112     io_h
2113     linux_perf_event_h
2114     machine_ioctl_bt848_h
2115     machine_ioctl_meteor_h
2116     malloc_h
2117     opencv2_core_core_c_h
2118     OpenGL_gl3_h
2119     poll_h
2120     sys_param_h
2121     sys_resource_h
2122     sys_select_h
2123     sys_soundcard_h
2124     sys_time_h
2125     sys_un_h
2126     sys_videoio_h
2127     termios_h
2128     udplite_h
2129     unistd_h
2130     valgrind_valgrind_h
2131     windows_h
2132     winsock2_h
2133 "
2134
2135 INTRINSICS_LIST="
2136     intrinsics_neon
2137 "
2138
2139 COMPLEX_FUNCS="
2140     cabs
2141     cexp
2142 "
2143
2144 MATH_FUNCS="
2145     atanf
2146     atan2f
2147     cbrt
2148     cbrtf
2149     copysign
2150     cosf
2151     erf
2152     exp2
2153     exp2f
2154     expf
2155     hypot
2156     isfinite
2157     isinf
2158     isnan
2159     ldexpf
2160     llrint
2161     llrintf
2162     log2
2163     log2f
2164     log10f
2165     lrint
2166     lrintf
2167     powf
2168     rint
2169     round
2170     roundf
2171     sinf
2172     trunc
2173     truncf
2174 "
2175
2176 SYSTEM_FEATURES="
2177     dos_paths
2178     libc_msvcrt
2179     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2180     section_data_rel_ro
2181     threads
2182     uwp
2183     winrt
2184 "
2185
2186 SYSTEM_FUNCS="
2187     access
2188     aligned_malloc
2189     arc4random
2190     clock_gettime
2191     closesocket
2192     CommandLineToArgvW
2193     fcntl
2194     getaddrinfo
2195     gethrtime
2196     getopt
2197     GetProcessAffinityMask
2198     GetProcessMemoryInfo
2199     GetProcessTimes
2200     getrusage
2201     GetSystemTimeAsFileTime
2202     gettimeofday
2203     glob
2204     glXGetProcAddress
2205     gmtime_r
2206     inet_aton
2207     isatty
2208     kbhit
2209     localtime_r
2210     lstat
2211     lzo1x_999_compress
2212     mach_absolute_time
2213     MapViewOfFile
2214     memalign
2215     mkstemp
2216     mmap
2217     mprotect
2218     nanosleep
2219     PeekNamedPipe
2220     posix_memalign
2221     pthread_cancel
2222     sched_getaffinity
2223     SecItemImport
2224     SetConsoleTextAttribute
2225     SetConsoleCtrlHandler
2226     setmode
2227     setrlimit
2228     Sleep
2229     strerror_r
2230     sysconf
2231     sysctl
2232     usleep
2233     UTGetOSTypeFromString
2234     VirtualAlloc
2235     wglGetProcAddress
2236 "
2237
2238 SYSTEM_LIBRARIES="
2239     bcrypt
2240     vaapi_drm
2241     vaapi_x11
2242     vdpau_x11
2243 "
2244
2245 TOOLCHAIN_FEATURES="
2246     as_arch_directive
2247     as_dn_directive
2248     as_fpu_directive
2249     as_func
2250     as_object_arch
2251     asm_mod_q
2252     blocks_extension
2253     ebp_available
2254     ebx_available
2255     gnu_as
2256     gnu_windres
2257     ibm_asm
2258     inline_asm_direct_symbol_refs
2259     inline_asm_labels
2260     inline_asm_nonlocal_labels
2261     pragma_deprecated
2262     rsync_contimeout
2263     symver_asm_label
2264     symver_gnu_asm
2265     vfp_args
2266     xform_asm
2267     xmm_clobbers
2268 "
2269
2270 TYPES_LIST="
2271     kCMVideoCodecType_HEVC
2272     kCVPixelFormatType_420YpCbCr10BiPlanarVideoRange
2273     kCVImageBufferTransferFunction_SMPTE_ST_2084_PQ
2274     kCVImageBufferTransferFunction_ITU_R_2100_HLG
2275     kCVImageBufferTransferFunction_Linear
2276     socklen_t
2277     struct_addrinfo
2278     struct_group_source_req
2279     struct_ip_mreq_source
2280     struct_ipv6_mreq
2281     struct_msghdr_msg_flags
2282     struct_pollfd
2283     struct_rusage_ru_maxrss
2284     struct_sctp_event_subscribe
2285     struct_sockaddr_in6
2286     struct_sockaddr_sa_len
2287     struct_sockaddr_storage
2288     struct_stat_st_mtim_tv_nsec
2289     struct_v4l2_frmivalenum_discrete
2290 "
2291
2292 HAVE_LIST="
2293     $ARCH_EXT_LIST
2294     $(add_suffix _external $ARCH_EXT_LIST)
2295     $(add_suffix _inline   $ARCH_EXT_LIST)
2296     $ARCH_FEATURES
2297     $BUILTIN_LIST
2298     $COMPLEX_FUNCS
2299     $HAVE_LIST_CMDLINE
2300     $HAVE_LIST_PUB
2301     $HEADERS_LIST
2302     $INTRINSICS_LIST
2303     $MATH_FUNCS
2304     $SYSTEM_FEATURES
2305     $SYSTEM_FUNCS
2306     $SYSTEM_LIBRARIES
2307     $THREADS_LIST
2308     $TOOLCHAIN_FEATURES
2309     $TYPES_LIST
2310     makeinfo
2311     makeinfo_html
2312     opencl_d3d11
2313     opencl_drm_arm
2314     opencl_drm_beignet
2315     opencl_dxva2
2316     opencl_vaapi_beignet
2317     opencl_vaapi_intel_media
2318     perl
2319     pod2man
2320     texi2html
2321 "
2322
2323 # options emitted with CONFIG_ prefix but not available on the command line
2324 CONFIG_EXTRA="
2325     aandcttables
2326     ac3dsp
2327     adts_header
2328     audio_frame_queue
2329     audiodsp
2330     blockdsp
2331     bswapdsp
2332     cabac
2333     cbs
2334     cbs_av1
2335     cbs_h264
2336     cbs_h265
2337     cbs_jpeg
2338     cbs_mpeg2
2339     cbs_vp9
2340     dirac_parse
2341     dnn
2342     dvprofile
2343     exif
2344     faandct
2345     faanidct
2346     fdctdsp
2347     flacdsp
2348     fmtconvert
2349     frame_thread_encoder
2350     g722dsp
2351     golomb
2352     gplv3
2353     h263dsp
2354     h264chroma
2355     h264dsp
2356     h264parse
2357     h264pred
2358     h264qpel
2359     hevcparse
2360     hpeldsp
2361     huffman
2362     huffyuvdsp
2363     huffyuvencdsp
2364     idctdsp
2365     iirfilter
2366     mdct15
2367     intrax8
2368     iso_media
2369     ividsp
2370     jpegtables
2371     lgplv3
2372     libx262
2373     llauddsp
2374     llviddsp
2375     llvidencdsp
2376     lpc
2377     lzf
2378     me_cmp
2379     mpeg_er
2380     mpegaudio
2381     mpegaudiodsp
2382     mpegaudioheader
2383     mpegvideo
2384     mpegvideoenc
2385     mss34dsp
2386     pixblockdsp
2387     qpeldsp
2388     qsv
2389     qsvdec
2390     qsvenc
2391     qsvvpp
2392     rangecoder
2393     riffdec
2394     riffenc
2395     rtpdec
2396     rtpenc_chain
2397     rv34dsp
2398     scene_sad
2399     sinewin
2400     snappy
2401     srtp
2402     startcode
2403     texturedsp
2404     texturedspenc
2405     tpeldsp
2406     vaapi_1
2407     vaapi_encode
2408     vc1dsp
2409     videodsp
2410     vp3dsp
2411     vp56dsp
2412     vp8dsp
2413     wma_freqs
2414     wmv2dsp
2415 "
2416
2417 CMDLINE_SELECT="
2418     $ARCH_EXT_LIST
2419     $CONFIG_LIST
2420     $HAVE_LIST_CMDLINE
2421     $THREADS_LIST
2422     asm
2423     cross_compile
2424     debug
2425     extra_warnings
2426     logging
2427     lto
2428     optimizations
2429     rpath
2430     stripping
2431 "
2432
2433 PATHS_LIST="
2434     bindir
2435     datadir
2436     docdir
2437     incdir
2438     libdir
2439     mandir
2440     pkgconfigdir
2441     prefix
2442     shlibdir
2443     install_name_dir
2444 "
2445
2446 CMDLINE_SET="
2447     $PATHS_LIST
2448     ar
2449     arch
2450     as
2451     assert_level
2452     build_suffix
2453     cc
2454     objcc
2455     cpu
2456     cross_prefix
2457     custom_allocator
2458     cxx
2459     dep_cc
2460     doxygen
2461     env
2462     extra_version
2463     gas
2464     host_cc
2465     host_cflags
2466     host_extralibs
2467     host_ld
2468     host_ldflags
2469     host_os
2470     ignore_tests
2471     install
2472     ld
2473     ln_s
2474     logfile
2475     malloc_prefix
2476     nm
2477     optflags
2478     nvcc
2479     nvccflags
2480     pkg_config
2481     pkg_config_flags
2482     progs_suffix
2483     random_seed
2484     ranlib
2485     samples
2486     strip
2487     sws_max_filter_size
2488     sysinclude
2489     sysroot
2490     target_exec
2491     target_os
2492     target_path
2493     target_samples
2494     tempprefix
2495     toolchain
2496     valgrind
2497     windres
2498     x86asmexe
2499 "
2500
2501 CMDLINE_APPEND="
2502     extra_cflags
2503     extra_cxxflags
2504     extra_objcflags
2505     host_cppflags
2506 "
2507
2508 # code dependency declarations
2509
2510 # architecture extensions
2511
2512 armv5te_deps="arm"
2513 armv6_deps="arm"
2514 armv6t2_deps="arm"
2515 armv8_deps="aarch64"
2516 neon_deps_any="aarch64 arm"
2517 intrinsics_neon_deps="neon"
2518 vfp_deps_any="aarch64 arm"
2519 vfpv3_deps="vfp"
2520 setend_deps="arm"
2521
2522 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2523
2524 altivec_deps="ppc"
2525 dcbzl_deps="ppc"
2526 ldbrx_deps="ppc"
2527 ppc4xx_deps="ppc"
2528 vsx_deps="altivec"
2529 power8_deps="vsx"
2530
2531 loongson2_deps="mips"
2532 loongson3_deps="mips"
2533 mips32r2_deps="mips"
2534 mips32r5_deps="mips"
2535 mips32r6_deps="mips"
2536 mips64r2_deps="mips"
2537 mips64r6_deps="mips"
2538 mipsfpu_deps="mips"
2539 mipsdsp_deps="mips"
2540 mipsdspr2_deps="mips"
2541 mmi_deps="mips"
2542 msa_deps="mipsfpu"
2543 msa2_deps="msa"
2544
2545 cpunop_deps="i686"
2546 x86_64_select="i686"
2547 x86_64_suggest="fast_cmov"
2548
2549 amd3dnow_deps="mmx"
2550 amd3dnowext_deps="amd3dnow"
2551 i686_deps="x86"
2552 mmx_deps="x86"
2553 mmxext_deps="mmx"
2554 sse_deps="mmxext"
2555 sse2_deps="sse"
2556 sse3_deps="sse2"
2557 ssse3_deps="sse3"
2558 sse4_deps="ssse3"
2559 sse42_deps="sse4"
2560 aesni_deps="sse42"
2561 avx_deps="sse42"
2562 xop_deps="avx"
2563 fma3_deps="avx"
2564 fma4_deps="avx"
2565 avx2_deps="avx"
2566 avx512_deps="avx2"
2567
2568 mmx_external_deps="x86asm"
2569 mmx_inline_deps="inline_asm x86"
2570 mmx_suggest="mmx_external mmx_inline"
2571
2572 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2573     eval dep=\$${ext}_deps
2574     eval ${ext}_external_deps='"${dep}_external"'
2575     eval ${ext}_inline_deps='"${dep}_inline"'
2576     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2577 done
2578
2579 aligned_stack_if_any="aarch64 ppc x86"
2580 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2581 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2582 fast_unaligned_if_any="aarch64 ppc x86"
2583 simd_align_16_if_any="altivec neon sse"
2584 simd_align_32_if_any="avx"
2585 simd_align_64_if_any="avx512"
2586
2587 # system capabilities
2588 linux_perf_deps="linux_perf_event_h"
2589 symver_if_any="symver_asm_label symver_gnu_asm"
2590 valgrind_backtrace_conflict="optimizations"
2591 valgrind_backtrace_deps="valgrind_valgrind_h"
2592
2593 # threading support
2594 atomics_gcc_if="sync_val_compare_and_swap"
2595 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2596 atomics_win32_if="MemoryBarrier"
2597 atomics_native_if_any="$ATOMICS_LIST"
2598 w32threads_deps="atomics_native"
2599 threads_if_any="$THREADS_LIST"
2600
2601 # subsystems
2602 cbs_av1_select="cbs"
2603 cbs_h264_select="cbs"
2604 cbs_h265_select="cbs"
2605 cbs_jpeg_select="cbs"
2606 cbs_mpeg2_select="cbs"
2607 cbs_vp9_select="cbs"
2608 dct_select="rdft"
2609 dirac_parse_select="golomb"
2610 dnn_suggest="libtensorflow"
2611 error_resilience_select="me_cmp"
2612 faandct_deps="faan"
2613 faandct_select="fdctdsp"
2614 faanidct_deps="faan"
2615 faanidct_select="idctdsp"
2616 h264dsp_select="startcode"
2617 hevcparse_select="golomb"
2618 frame_thread_encoder_deps="encoders threads"
2619 intrax8_select="blockdsp idctdsp"
2620 mdct_select="fft"
2621 mdct15_select="fft"
2622 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2623 mpeg_er_select="error_resilience"
2624 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2625 mpegaudiodsp_select="dct"
2626 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2627 mpegvideoenc_select="aandcttables me_cmp mpegvideo pixblockdsp qpeldsp"
2628 vc1dsp_select="h264chroma qpeldsp startcode"
2629 rdft_select="fft"
2630
2631 # decoders / encoders
2632 aac_decoder_select="adts_header mdct15 mdct sinewin"
2633 aac_fixed_decoder_select="adts_header mdct sinewin"
2634 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2635 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2636 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2637 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2638 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2639 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2640 acelp_kelvin_decoder_select="audiodsp"
2641 adpcm_g722_decoder_select="g722dsp"
2642 adpcm_g722_encoder_select="g722dsp"
2643 aic_decoder_select="golomb idctdsp"
2644 alac_encoder_select="lpc"
2645 als_decoder_select="bswapdsp"
2646 amrnb_decoder_select="lsp"
2647 amrwb_decoder_select="lsp"
2648 amv_decoder_select="sp5x_decoder exif"
2649 amv_encoder_select="jpegtables mpegvideoenc"
2650 ape_decoder_select="bswapdsp llauddsp"
2651 apng_decoder_deps="zlib"
2652 apng_encoder_deps="zlib"
2653 apng_encoder_select="llvidencdsp"
2654 aptx_decoder_select="audio_frame_queue"
2655 aptx_encoder_select="audio_frame_queue"
2656 aptx_hd_decoder_select="audio_frame_queue"
2657 aptx_hd_encoder_select="audio_frame_queue"
2658 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2659 asv1_encoder_select="aandcttables bswapdsp fdctdsp pixblockdsp"
2660 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2661 asv2_encoder_select="aandcttables bswapdsp fdctdsp pixblockdsp"
2662 atrac1_decoder_select="mdct sinewin"
2663 atrac3_decoder_select="mdct"
2664 atrac3al_decoder_select="mdct"
2665 atrac3p_decoder_select="mdct sinewin"
2666 atrac3pal_decoder_select="mdct sinewin"
2667 atrac9_decoder_select="mdct"
2668 avrn_decoder_select="exif jpegtables"
2669 bink_decoder_select="blockdsp hpeldsp"
2670 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2671 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2672 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2673 clearvideo_decoder_select="idctdsp"
2674 cllc_decoder_select="bswapdsp"
2675 comfortnoise_encoder_select="lpc"
2676 cook_decoder_select="audiodsp mdct sinewin"
2677 cscd_decoder_select="lzo"
2678 cscd_decoder_suggest="zlib"
2679 dca_decoder_select="mdct"
2680 dca_encoder_select="mdct"
2681 dds_decoder_select="texturedsp"
2682 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2683 dnxhd_decoder_select="blockdsp idctdsp"
2684 dnxhd_encoder_select="blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2685 dolby_e_decoder_select="mdct"
2686 dvvideo_decoder_select="dvprofile idctdsp"
2687 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2688 dxa_decoder_deps="zlib"
2689 dxv_decoder_select="lzf texturedsp"
2690 eac3_decoder_select="ac3_decoder"
2691 eac3_encoder_select="ac3_encoder"
2692 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2693 eatgq_decoder_select="aandcttables"
2694 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2695 exr_decoder_deps="zlib"
2696 ffv1_decoder_select="rangecoder"
2697 ffv1_encoder_select="rangecoder"
2698 ffvhuff_decoder_select="huffyuv_decoder"
2699 ffvhuff_encoder_select="huffyuv_encoder"
2700 fic_decoder_select="golomb"
2701 flac_decoder_select="flacdsp"
2702 flac_encoder_select="bswapdsp flacdsp lpc"
2703 flashsv2_decoder_deps="zlib"
2704 flashsv2_encoder_deps="zlib"
2705 flashsv_decoder_deps="zlib"
2706 flashsv_encoder_deps="zlib"
2707 flv_decoder_select="h263_decoder"
2708 flv_encoder_select="h263_encoder"
2709 fourxm_decoder_select="blockdsp bswapdsp"
2710 fraps_decoder_select="bswapdsp huffman"
2711 g2m_decoder_deps="zlib"
2712 g2m_decoder_select="blockdsp idctdsp jpegtables"
2713 g729_decoder_select="audiodsp"
2714 h261_decoder_select="mpegvideo"
2715 h261_encoder_select="mpegvideoenc"
2716 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2717 h263_encoder_select="h263dsp mpegvideoenc"
2718 h263i_decoder_select="h263_decoder"
2719 h263p_decoder_select="h263_decoder"
2720 h263p_encoder_select="h263_encoder"
2721 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2722 h264_decoder_suggest="error_resilience"
2723 hap_decoder_select="snappy texturedsp"
2724 hap_encoder_deps="libsnappy"
2725 hap_encoder_select="texturedspenc"
2726 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2727 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2728 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2729 hymt_decoder_select="huffyuv_decoder"
2730 iac_decoder_select="imc_decoder"
2731 imc_decoder_select="bswapdsp fft mdct sinewin"
2732 imm4_decoder_select="bswapdsp"
2733 imm5_decoder_select="h264_decoder hevc_decoder"
2734 indeo3_decoder_select="hpeldsp"
2735 indeo4_decoder_select="ividsp"
2736 indeo5_decoder_select="ividsp"
2737 interplay_video_decoder_select="hpeldsp"
2738 jpegls_decoder_select="mjpeg_decoder"
2739 jv_decoder_select="blockdsp"
2740 lagarith_decoder_select="llviddsp"
2741 ljpeg_encoder_select="idctdsp jpegtables mpegvideoenc"
2742 lscr_decoder_deps="zlib"
2743 magicyuv_decoder_select="llviddsp"
2744 magicyuv_encoder_select="llvidencdsp"
2745 mdec_decoder_select="blockdsp bswapdsp idctdsp mpegvideo"
2746 metasound_decoder_select="lsp mdct sinewin"
2747 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2748 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2749 mjpeg_encoder_select="jpegtables mpegvideoenc"
2750 mjpegb_decoder_select="mjpeg_decoder"
2751 mlp_decoder_select="mlp_parser"
2752 mlp_encoder_select="lpc audio_frame_queue"
2753 motionpixels_decoder_select="bswapdsp"
2754 mp1_decoder_select="mpegaudio"
2755 mp1float_decoder_select="mpegaudio"
2756 mp2_decoder_select="mpegaudio"
2757 mp2float_decoder_select="mpegaudio"
2758 mp3_decoder_select="mpegaudio"
2759 mp3adu_decoder_select="mpegaudio"
2760 mp3adufloat_decoder_select="mpegaudio"
2761 mp3float_decoder_select="mpegaudio"
2762 mp3on4_decoder_select="mpegaudio"
2763 mp3on4float_decoder_select="mpegaudio"
2764 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2765 mpc8_decoder_select="mpegaudiodsp"
2766 mpegvideo_decoder_select="mpegvideo"
2767 mpeg1video_decoder_select="mpegvideo"
2768 mpeg1video_encoder_select="mpegvideoenc h263dsp"
2769 mpeg2video_decoder_select="mpegvideo"
2770 mpeg2video_encoder_select="mpegvideoenc h263dsp"
2771 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2772 mpeg4_encoder_select="h263_encoder"
2773 msa1_decoder_select="mss34dsp"
2774 mscc_decoder_deps="zlib"
2775 msmpeg4v1_decoder_select="h263_decoder"
2776 msmpeg4v2_decoder_select="h263_decoder"
2777 msmpeg4v2_encoder_select="h263_encoder"
2778 msmpeg4v3_decoder_select="h263_decoder"
2779 msmpeg4v3_encoder_select="h263_encoder"
2780 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2781 mts2_decoder_select="mss34dsp"
2782 mwsc_decoder_deps="zlib"
2783 mxpeg_decoder_select="mjpeg_decoder"
2784 nellymoser_decoder_select="mdct sinewin"
2785 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2786 nuv_decoder_select="idctdsp lzo"
2787 on2avc_decoder_select="mdct"
2788 opus_decoder_deps="swresample"
2789 opus_decoder_select="mdct15"
2790 opus_encoder_select="audio_frame_queue mdct15"
2791 png_decoder_deps="zlib"
2792 png_encoder_deps="zlib"
2793 png_encoder_select="llvidencdsp"
2794 prores_decoder_select="blockdsp idctdsp"
2795 prores_encoder_select="fdctdsp"
2796 qcelp_decoder_select="lsp"
2797 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2798 ra_144_decoder_select="audiodsp"
2799 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2800 ralf_decoder_select="golomb"
2801 rasc_decoder_deps="zlib"
2802 rawvideo_decoder_select="bswapdsp"
2803 rscc_decoder_deps="zlib"
2804 rtjpeg_decoder_select="me_cmp"
2805 rv10_decoder_select="h263_decoder"
2806 rv10_encoder_select="h263_encoder"
2807 rv20_decoder_select="h263_decoder"
2808 rv20_encoder_select="h263_encoder"
2809 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2810 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2811 screenpresso_decoder_deps="zlib"
2812 shorten_decoder_select="bswapdsp"
2813 sipr_decoder_select="lsp"
2814 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2815 snow_encoder_select="dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2816 sonic_decoder_select="golomb rangecoder"
2817 sonic_encoder_select="golomb rangecoder"
2818 sonic_ls_encoder_select="golomb rangecoder"
2819 sp5x_decoder_select="mjpeg_decoder"
2820 speedhq_decoder_select="mpegvideo"
2821 srgc_decoder_deps="zlib"
2822 svq1_decoder_select="hpeldsp"
2823 svq1_encoder_select="hpeldsp me_cmp mpegvideoenc"
2824 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2825 svq3_decoder_suggest="zlib"
2826 tak_decoder_select="audiodsp"
2827 tdsc_decoder_deps="zlib"
2828 tdsc_decoder_select="mjpeg_decoder"
2829 theora_decoder_select="vp3_decoder"
2830 thp_decoder_select="mjpeg_decoder"
2831 tiff_decoder_select="mjpeg_decoder"
2832 tiff_decoder_suggest="zlib lzma"
2833 tiff_encoder_suggest="zlib"
2834 truehd_decoder_select="mlp_parser"
2835 truehd_encoder_select="lpc audio_frame_queue"
2836 truemotion2_decoder_select="bswapdsp"
2837 truespeech_decoder_select="bswapdsp"
2838 tscc_decoder_deps="zlib"
2839 twinvq_decoder_select="mdct lsp sinewin"
2840 txd_decoder_select="texturedsp"
2841 utvideo_decoder_select="bswapdsp llviddsp"
2842 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2843 vble_decoder_select="llviddsp"
2844 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2845 vc1image_decoder_select="vc1_decoder"
2846 vorbis_decoder_select="mdct"
2847 vorbis_encoder_select="audio_frame_queue mdct"
2848 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2849 vp4_decoder_select="vp3_decoder"
2850 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2851 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2852 vp6a_decoder_select="vp6_decoder"
2853 vp6f_decoder_select="vp6_decoder"
2854 vp7_decoder_select="h264pred videodsp vp8dsp"
2855 vp8_decoder_select="h264pred videodsp vp8dsp"
2856 vp9_decoder_select="videodsp vp9_parser vp9_superframe_split_bsf"
2857 wcmv_decoder_deps="zlib"
2858 webp_decoder_select="vp8_decoder exif"
2859 wmalossless_decoder_select="llauddsp"
2860 wmapro_decoder_select="mdct sinewin wma_freqs"
2861 wmav1_decoder_select="mdct sinewin wma_freqs"
2862 wmav1_encoder_select="mdct sinewin wma_freqs"
2863 wmav2_decoder_select="mdct sinewin wma_freqs"
2864 wmav2_encoder_select="mdct sinewin wma_freqs"
2865 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2866 wmv1_decoder_select="h263_decoder"
2867 wmv1_encoder_select="h263_encoder"
2868 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2869 wmv2_encoder_select="h263_encoder wmv2dsp"
2870 wmv3_decoder_select="vc1_decoder"
2871 wmv3image_decoder_select="wmv3_decoder"
2872 xma1_decoder_select="wmapro_decoder"
2873 xma2_decoder_select="wmapro_decoder"
2874 ylc_decoder_select="bswapdsp"
2875 zerocodec_decoder_deps="zlib"
2876 zlib_decoder_deps="zlib"
2877 zlib_encoder_deps="zlib"
2878 zmbv_decoder_deps="zlib"
2879 zmbv_encoder_deps="zlib"
2880
2881 # hardware accelerators
2882 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2883 cuda_deps="ffnvcodec"
2884 cuvid_deps="ffnvcodec"
2885 d3d11va_deps="dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2886 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2887 ffnvcodec_deps_any="libdl LoadLibrary"
2888 nvdec_deps="ffnvcodec"
2889 vaapi_x11_deps="xlib"
2890 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2891 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2892 xvmc_deps="X11_extensions_XvMClib_h"
2893
2894 h263_vaapi_hwaccel_deps="vaapi"
2895 h263_vaapi_hwaccel_select="h263_decoder"
2896 h263_videotoolbox_hwaccel_deps="videotoolbox"
2897 h263_videotoolbox_hwaccel_select="h263_decoder"
2898 h264_d3d11va_hwaccel_deps="d3d11va"
2899 h264_d3d11va_hwaccel_select="h264_decoder"
2900 h264_d3d11va2_hwaccel_deps="d3d11va"
2901 h264_d3d11va2_hwaccel_select="h264_decoder"
2902 h264_dxva2_hwaccel_deps="dxva2"
2903 h264_dxva2_hwaccel_select="h264_decoder"
2904 h264_nvdec_hwaccel_deps="nvdec"
2905 h264_nvdec_hwaccel_select="h264_decoder"
2906 h264_vaapi_hwaccel_deps="vaapi"
2907 h264_vaapi_hwaccel_select="h264_decoder"
2908 h264_vdpau_hwaccel_deps="vdpau"
2909 h264_vdpau_hwaccel_select="h264_decoder"
2910 h264_videotoolbox_hwaccel_deps="videotoolbox"
2911 h264_videotoolbox_hwaccel_select="h264_decoder"
2912 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2913 hevc_d3d11va_hwaccel_select="hevc_decoder"
2914 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2915 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2916 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2917 hevc_dxva2_hwaccel_select="hevc_decoder"
2918 hevc_nvdec_hwaccel_deps="nvdec"
2919 hevc_nvdec_hwaccel_select="hevc_decoder"
2920 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2921 hevc_vaapi_hwaccel_select="hevc_decoder"
2922 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2923 hevc_vdpau_hwaccel_select="hevc_decoder"
2924 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2925 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2926 mjpeg_nvdec_hwaccel_deps="nvdec"
2927 mjpeg_nvdec_hwaccel_select="mjpeg_decoder"
2928 mjpeg_vaapi_hwaccel_deps="vaapi"
2929 mjpeg_vaapi_hwaccel_select="mjpeg_decoder"
2930 mpeg_xvmc_hwaccel_deps="xvmc"
2931 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2932 mpeg1_nvdec_hwaccel_deps="nvdec"
2933 mpeg1_nvdec_hwaccel_select="mpeg1video_decoder"
2934 mpeg1_vdpau_hwaccel_deps="vdpau"
2935 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2936 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2937 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2938 mpeg1_xvmc_hwaccel_deps="xvmc"
2939 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2940 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2941 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2942 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2943 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2944 mpeg2_dxva2_hwaccel_deps="dxva2"
2945 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2946 mpeg2_nvdec_hwaccel_deps="nvdec"
2947 mpeg2_nvdec_hwaccel_select="mpeg2video_decoder"
2948 mpeg2_vaapi_hwaccel_deps="vaapi"
2949 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2950 mpeg2_vdpau_hwaccel_deps="vdpau"
2951 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2952 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2953 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2954 mpeg2_xvmc_hwaccel_deps="xvmc"
2955 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2956 mpeg4_nvdec_hwaccel_deps="nvdec"
2957 mpeg4_nvdec_hwaccel_select="mpeg4_decoder"
2958 mpeg4_vaapi_hwaccel_deps="vaapi"
2959 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2960 mpeg4_vdpau_hwaccel_deps="vdpau"
2961 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2962 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2963 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2964 vc1_d3d11va_hwaccel_deps="d3d11va"
2965 vc1_d3d11va_hwaccel_select="vc1_decoder"
2966 vc1_d3d11va2_hwaccel_deps="d3d11va"
2967 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2968 vc1_dxva2_hwaccel_deps="dxva2"
2969 vc1_dxva2_hwaccel_select="vc1_decoder"
2970 vc1_nvdec_hwaccel_deps="nvdec"
2971 vc1_nvdec_hwaccel_select="vc1_decoder"
2972 vc1_vaapi_hwaccel_deps="vaapi"
2973 vc1_vaapi_hwaccel_select="vc1_decoder"
2974 vc1_vdpau_hwaccel_deps="vdpau"
2975 vc1_vdpau_hwaccel_select="vc1_decoder"
2976 vp8_nvdec_hwaccel_deps="nvdec"
2977 vp8_nvdec_hwaccel_select="vp8_decoder"
2978 vp8_vaapi_hwaccel_deps="vaapi"
2979 vp8_vaapi_hwaccel_select="vp8_decoder"
2980 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2981 vp9_d3d11va_hwaccel_select="vp9_decoder"
2982 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2983 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2984 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2985 vp9_dxva2_hwaccel_select="vp9_decoder"
2986 vp9_nvdec_hwaccel_deps="nvdec"
2987 vp9_nvdec_hwaccel_select="vp9_decoder"
2988 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2989 vp9_vaapi_hwaccel_select="vp9_decoder"
2990 vp9_vdpau_hwaccel_deps="vdpau VdpPictureInfoVP9"
2991 vp9_vdpau_hwaccel_select="vp9_decoder"
2992 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2993 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2994 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2995 wmv3_nvdec_hwaccel_select="vc1_nvdec_hwaccel"
2996 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2997 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2998
2999 # hardware-accelerated codecs
3000 omx_deps="libdl pthreads"
3001 omx_rpi_select="omx"
3002 qsv_deps="libmfx"
3003 qsvdec_select="qsv"
3004 qsvenc_select="qsv"
3005 qsvvpp_select="qsv"
3006 vaapi_encode_deps="vaapi"
3007 v4l2_m2m_deps="linux_videodev2_h sem_timedwait"
3008
3009 hwupload_cuda_filter_deps="ffnvcodec"
3010 scale_npp_filter_deps="ffnvcodec libnpp"
3011 scale_cuda_filter_deps="ffnvcodec"
3012 scale_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3013 thumbnail_cuda_filter_deps="ffnvcodec"
3014 thumbnail_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3015 transpose_npp_filter_deps="ffnvcodec libnpp"
3016
3017 amf_deps_any="libdl LoadLibrary"
3018 nvenc_deps="ffnvcodec"
3019 nvenc_deps_any="libdl LoadLibrary"
3020 nvenc_encoder_deps="nvenc"
3021
3022 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
3023 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
3024 h264_amf_encoder_deps="amf"
3025 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
3026 h264_cuvid_decoder_deps="cuvid"
3027 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
3028 h264_mediacodec_decoder_deps="mediacodec"
3029 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
3030 h264_mmal_decoder_deps="mmal"
3031 h264_nvenc_encoder_deps="nvenc"
3032 h264_omx_encoder_deps="omx"
3033 h264_qsv_decoder_select="h264_mp4toannexb_bsf qsvdec"
3034 h264_qsv_encoder_select="qsvenc"
3035 h264_rkmpp_decoder_deps="rkmpp"
3036 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
3037 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
3038 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
3039 h264_v4l2m2m_decoder_select="h264_mp4toannexb_bsf"
3040 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
3041 hevc_amf_encoder_deps="amf"
3042 hevc_cuvid_decoder_deps="cuvid"
3043 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
3044 hevc_mediacodec_decoder_deps="mediacodec"
3045 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
3046 hevc_nvenc_encoder_deps="nvenc"
3047 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf qsvdec"
3048 hevc_qsv_encoder_select="hevcparse qsvenc"
3049 hevc_rkmpp_decoder_deps="rkmpp"
3050 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
3051 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
3052 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
3053 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
3054 hevc_v4l2m2m_decoder_select="hevc_mp4toannexb_bsf"
3055 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
3056 mjpeg_cuvid_decoder_deps="cuvid"
3057 mjpeg_qsv_decoder_select="qsvdec"
3058 mjpeg_qsv_encoder_deps="libmfx"
3059 mjpeg_qsv_encoder_select="qsvenc"
3060 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
3061 mjpeg_vaapi_encoder_select="cbs_jpeg jpegtables vaapi_encode"
3062 mpeg1_cuvid_decoder_deps="cuvid"
3063 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
3064 mpeg2_crystalhd_decoder_select="crystalhd"
3065 mpeg2_cuvid_decoder_deps="cuvid"
3066 mpeg2_mmal_decoder_deps="mmal"
3067 mpeg2_mediacodec_decoder_deps="mediacodec"
3068 mpeg2_qsv_decoder_select="qsvdec"
3069 mpeg2_qsv_encoder_select="qsvenc"
3070 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
3071 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
3072 mpeg4_crystalhd_decoder_select="crystalhd"
3073 mpeg4_cuvid_decoder_deps="cuvid"
3074 mpeg4_mediacodec_decoder_deps="mediacodec"
3075 mpeg4_mmal_decoder_deps="mmal"
3076 mpeg4_omx_encoder_deps="omx"
3077 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
3078 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
3079 msmpeg4_crystalhd_decoder_select="crystalhd"
3080 nvenc_h264_encoder_select="h264_nvenc_encoder"
3081 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
3082 vc1_crystalhd_decoder_select="crystalhd"
3083 vc1_cuvid_decoder_deps="cuvid"
3084 vc1_mmal_decoder_deps="mmal"
3085 vc1_qsv_decoder_select="qsvdec"
3086 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
3087 vp8_cuvid_decoder_deps="cuvid"
3088 vp8_mediacodec_decoder_deps="mediacodec"
3089 vp8_qsv_decoder_select="qsvdec"
3090 vp8_rkmpp_decoder_deps="rkmpp"
3091 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
3092 vp8_vaapi_encoder_select="vaapi_encode"
3093 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
3094 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
3095 vp9_cuvid_decoder_deps="cuvid"
3096 vp9_mediacodec_decoder_deps="mediacodec"
3097 vp9_qsv_decoder_select="qsvdec"
3098 vp9_rkmpp_decoder_deps="rkmpp"
3099 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
3100 vp9_vaapi_encoder_select="vaapi_encode"
3101 vp9_qsv_encoder_deps="libmfx MFX_CODEC_VP9"
3102 vp9_qsv_encoder_select="qsvenc"
3103 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
3104 wmv3_crystalhd_decoder_select="crystalhd"
3105
3106 # parsers
3107 aac_parser_select="adts_header"
3108 av1_parser_select="cbs_av1"
3109 h264_parser_select="golomb h264dsp h264parse"
3110 hevc_parser_select="hevcparse"
3111 mpegaudio_parser_select="mpegaudioheader"
3112 mpegvideo_parser_select="mpegvideo"
3113 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
3114 vc1_parser_select="vc1dsp"
3115
3116 # bitstream_filters
3117 aac_adtstoasc_bsf_select="adts_header"
3118 av1_frame_merge_bsf_select="cbs_av1"
3119 av1_frame_split_bsf_select="cbs_av1"
3120 av1_metadata_bsf_select="cbs_av1"
3121 eac3_core_bsf_select="ac3_parser"
3122 filter_units_bsf_select="cbs"
3123 h264_metadata_bsf_deps="const_nan"
3124 h264_metadata_bsf_select="cbs_h264"
3125 h264_redundant_pps_bsf_select="cbs_h264"
3126 hevc_metadata_bsf_select="cbs_h265"
3127 mjpeg2jpeg_bsf_select="jpegtables"
3128 mpeg2_metadata_bsf_select="cbs_mpeg2"
3129 trace_headers_bsf_select="cbs"
3130 vp9_metadata_bsf_select="cbs_vp9"
3131
3132 # external libraries
3133 aac_at_decoder_deps="audiotoolbox"
3134 aac_at_decoder_select="aac_adtstoasc_bsf"
3135 ac3_at_decoder_deps="audiotoolbox"
3136 ac3_at_decoder_select="ac3_parser"
3137 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
3138 alac_at_decoder_deps="audiotoolbox"
3139 amr_nb_at_decoder_deps="audiotoolbox"
3140 avisynth_deps_any="libdl LoadLibrary"
3141 avisynth_demuxer_deps="avisynth"
3142 avisynth_demuxer_select="riffdec"
3143 eac3_at_decoder_deps="audiotoolbox"
3144 eac3_at_decoder_select="ac3_parser"
3145 gsm_ms_at_decoder_deps="audiotoolbox"
3146 ilbc_at_decoder_deps="audiotoolbox"
3147 mp1_at_decoder_deps="audiotoolbox"
3148 mp2_at_decoder_deps="audiotoolbox"
3149 mp3_at_decoder_deps="audiotoolbox"
3150 mp1_at_decoder_select="mpegaudioheader"
3151 mp2_at_decoder_select="mpegaudioheader"
3152 mp3_at_decoder_select="mpegaudioheader"
3153 pcm_alaw_at_decoder_deps="audiotoolbox"
3154 pcm_mulaw_at_decoder_deps="audiotoolbox"
3155 qdmc_decoder_select="fft"
3156 qdmc_at_decoder_deps="audiotoolbox"
3157 qdm2_at_decoder_deps="audiotoolbox"
3158 aac_at_encoder_deps="audiotoolbox"
3159 aac_at_encoder_select="audio_frame_queue"
3160 alac_at_encoder_deps="audiotoolbox"
3161 alac_at_encoder_select="audio_frame_queue"
3162 ilbc_at_encoder_deps="audiotoolbox"
3163 ilbc_at_encoder_select="audio_frame_queue"
3164 pcm_alaw_at_encoder_deps="audiotoolbox"
3165 pcm_alaw_at_encoder_select="audio_frame_queue"
3166 pcm_mulaw_at_encoder_deps="audiotoolbox"
3167 pcm_mulaw_at_encoder_select="audio_frame_queue"
3168 chromaprint_muxer_deps="chromaprint"
3169 h264_videotoolbox_encoder_deps="pthreads"
3170 h264_videotoolbox_encoder_select="videotoolbox_encoder"
3171 hevc_videotoolbox_encoder_deps="pthreads"
3172 hevc_videotoolbox_encoder_select="videotoolbox_encoder"
3173 libaom_av1_decoder_deps="libaom"
3174 libaom_av1_encoder_deps="libaom"
3175 libaom_av1_encoder_select="extract_extradata_bsf"
3176 libaribb24_decoder_deps="libaribb24"
3177 libcelt_decoder_deps="libcelt"
3178 libcodec2_decoder_deps="libcodec2"
3179 libcodec2_encoder_deps="libcodec2"
3180 libdav1d_decoder_deps="libdav1d"
3181 libdavs2_decoder_deps="libdavs2"
3182 libfdk_aac_decoder_deps="libfdk_aac"
3183 libfdk_aac_encoder_deps="libfdk_aac"
3184 libfdk_aac_encoder_select="audio_frame_queue"
3185 libgme_demuxer_deps="libgme"
3186 libgsm_decoder_deps="libgsm"
3187 libgsm_encoder_deps="libgsm"
3188 libgsm_ms_decoder_deps="libgsm"
3189 libgsm_ms_encoder_deps="libgsm"
3190 libilbc_decoder_deps="libilbc"
3191 libilbc_encoder_deps="libilbc"
3192 libkvazaar_encoder_deps="libkvazaar"
3193 libmodplug_demuxer_deps="libmodplug"
3194 libmp3lame_encoder_deps="libmp3lame"
3195 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
3196 libopencore_amrnb_decoder_deps="libopencore_amrnb"
3197 libopencore_amrnb_encoder_deps="libopencore_amrnb"
3198 libopencore_amrnb_encoder_select="audio_frame_queue"
3199 libopencore_amrwb_decoder_deps="libopencore_amrwb"
3200 libopenh264_decoder_deps="libopenh264"
3201 libopenh264_decoder_select="h264_mp4toannexb_bsf"
3202 libopenh264_encoder_deps="libopenh264"
3203 libopenjpeg_decoder_deps="libopenjpeg"
3204 libopenjpeg_encoder_deps="libopenjpeg"
3205 libopenmpt_demuxer_deps="libopenmpt"
3206 libopus_decoder_deps="libopus"
3207 libopus_encoder_deps="libopus"
3208 libopus_encoder_select="audio_frame_queue"
3209 librav1e_encoder_deps="librav1e"
3210 librav1e_encoder_select="extract_extradata_bsf"
3211 librsvg_decoder_deps="librsvg"
3212 libshine_encoder_deps="libshine"
3213 libshine_encoder_select="audio_frame_queue"
3214 libspeex_decoder_deps="libspeex"
3215 libspeex_encoder_deps="libspeex"
3216 libspeex_encoder_select="audio_frame_queue"
3217 libtheora_encoder_deps="libtheora"
3218 libtwolame_encoder_deps="libtwolame"
3219 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
3220 libvorbis_decoder_deps="libvorbis"
3221 libvorbis_encoder_deps="libvorbis libvorbisenc"
3222 libvorbis_encoder_select="audio_frame_queue"
3223 libvpx_vp8_decoder_deps="libvpx"
3224 libvpx_vp8_encoder_deps="libvpx"
3225 libvpx_vp9_decoder_deps="libvpx"
3226 libvpx_vp9_encoder_deps="libvpx"
3227 libwavpack_encoder_deps="libwavpack"
3228 libwavpack_encoder_select="audio_frame_queue"
3229 libwebp_encoder_deps="libwebp"
3230 libwebp_anim_encoder_deps="libwebp"
3231 libx262_encoder_deps="libx262"
3232 libx264_encoder_deps="libx264"
3233 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
3234 libx264rgb_encoder_select="libx264_encoder"
3235 libx265_encoder_deps="libx265"
3236 libxavs_encoder_deps="libxavs"
3237 libxavs2_encoder_deps="libxavs2"
3238 libxvid_encoder_deps="libxvid"
3239 libzvbi_teletext_decoder_deps="libzvbi"
3240 vapoursynth_demuxer_deps="vapoursynth"
3241 videotoolbox_suggest="coreservices"
3242 videotoolbox_deps="corefoundation coremedia corevideo"
3243 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
3244
3245 # demuxers / muxers
3246 ac3_demuxer_select="ac3_parser"
3247 act_demuxer_select="riffdec"
3248 aiff_muxer_select="iso_media"
3249 asf_demuxer_select="riffdec"
3250 asf_o_demuxer_select="riffdec"
3251 asf_muxer_select="riffenc"
3252 asf_stream_muxer_select="asf_muxer"
3253 av1_demuxer_select="av1_frame_merge_bsf av1_parser"
3254 avi_demuxer_select="iso_media riffdec exif"
3255 avi_muxer_select="riffenc"
3256 caf_demuxer_select="iso_media riffdec"
3257 caf_muxer_select="iso_media"
3258 dash_muxer_select="mp4_muxer"
3259 dash_demuxer_deps="libxml2"
3260 dirac_demuxer_select="dirac_parser"
3261 dts_demuxer_select="dca_parser"
3262 dtshd_demuxer_select="dca_parser"
3263 dv_demuxer_select="dvprofile"
3264 dv_muxer_select="dvprofile"
3265 dxa_demuxer_select="riffdec"
3266 eac3_demuxer_select="ac3_parser"
3267 f4v_muxer_select="mov_muxer"
3268 fifo_muxer_deps="threads"
3269 flac_demuxer_select="flac_parser"
3270 hds_muxer_select="flv_muxer"
3271 hls_muxer_select="mpegts_muxer"
3272 hls_muxer_suggest="gcrypt openssl"
3273 image2_alias_pix_demuxer_select="image2_demuxer"
3274 image2_brender_pix_demuxer_select="image2_demuxer"
3275 ipod_muxer_select="mov_muxer"
3276 ismv_muxer_select="mov_muxer"
3277 ivf_muxer_select="av1_metadata_bsf vp9_superframe_bsf"
3278 matroska_audio_muxer_select="matroska_muxer"
3279 matroska_demuxer_select="iso_media riffdec"
3280 matroska_demuxer_suggest="bzlib lzo zlib"
3281 matroska_muxer_select="iso_media riffenc"
3282 mmf_muxer_select="riffenc"
3283 mov_demuxer_select="iso_media riffdec"
3284 mov_demuxer_suggest="zlib"
3285 mov_muxer_select="iso_media riffenc rtpenc_chain"
3286 mp3_demuxer_select="mpegaudio_parser"
3287 mp3_muxer_select="mpegaudioheader"
3288 mp4_muxer_select="mov_muxer"
3289 mpegts_demuxer_select="iso_media"
3290 mpegts_muxer_select="adts_muxer latm_muxer"
3291 mpegtsraw_demuxer_select="mpegts_demuxer"
3292 mxf_muxer_select="golomb"
3293 mxf_d10_muxer_select="mxf_muxer"
3294 mxf_opatom_muxer_select="mxf_muxer"
3295 nut_muxer_select="riffenc"
3296 nuv_demuxer_select="riffdec"
3297 oga_muxer_select="ogg_muxer"
3298 ogg_demuxer_select="dirac_parse"
3299 ogv_muxer_select="ogg_muxer"
3300 opus_muxer_select="ogg_muxer"
3301 psp_muxer_select="mov_muxer"
3302 rtp_demuxer_select="sdp_demuxer"
3303 rtp_muxer_select="golomb jpegtables"
3304 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3305 rtsp_demuxer_select="http_protocol rtpdec"
3306 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3307 sap_demuxer_select="sdp_demuxer"
3308 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3309 sdp_demuxer_select="rtpdec"
3310 smoothstreaming_muxer_select="ismv_muxer"
3311 spdif_demuxer_select="adts_header"
3312 spdif_muxer_select="adts_header"
3313 spx_muxer_select="ogg_muxer"
3314 swf_demuxer_suggest="zlib"
3315 tak_demuxer_select="tak_parser"
3316 tg2_muxer_select="mov_muxer"
3317 tgp_muxer_select="mov_muxer"
3318 vobsub_demuxer_select="mpegps_demuxer"
3319 w64_demuxer_select="wav_demuxer"
3320 w64_muxer_select="wav_muxer"
3321 wav_demuxer_select="riffdec"
3322 wav_muxer_select="riffenc"
3323 webm_muxer_select="iso_media riffenc"
3324 webm_dash_manifest_demuxer_select="matroska_demuxer"
3325 wtv_demuxer_select="mpegts_demuxer riffdec"
3326 wtv_muxer_select="mpegts_muxer riffenc"
3327 xmv_demuxer_select="riffdec"
3328 xwma_demuxer_select="riffdec"
3329
3330 # indevs / outdevs
3331 android_camera_indev_deps="android camera2ndk mediandk pthreads"
3332 android_camera_indev_extralibs="-landroid -lcamera2ndk -lmediandk"
3333 alsa_indev_deps="alsa"
3334 alsa_outdev_deps="alsa"
3335 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3336 avfoundation_indev_suggest="coregraphics applicationservices"
3337 avfoundation_indev_extralibs="-framework Foundation"
3338 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3339 caca_outdev_deps="libcaca"
3340 decklink_deps_any="libdl LoadLibrary"
3341 decklink_indev_deps="decklink threads"
3342 decklink_indev_extralibs="-lstdc++"
3343 decklink_outdev_deps="decklink threads"
3344 decklink_outdev_suggest="libklvanc"
3345 decklink_outdev_extralibs="-lstdc++"
3346 dshow_indev_deps="IBaseFilter"
3347 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3348 fbdev_indev_deps="linux_fb_h"
3349 fbdev_outdev_deps="linux_fb_h"
3350 gdigrab_indev_deps="CreateDIBSection"
3351 gdigrab_indev_extralibs="-lgdi32"
3352 gdigrab_indev_select="bmp_decoder"
3353 iec61883_indev_deps="libiec61883"
3354 jack_indev_deps="libjack"
3355 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3356 kmsgrab_indev_deps="libdrm"
3357 lavfi_indev_deps="avfilter"
3358 libcdio_indev_deps="libcdio"
3359 libdc1394_indev_deps="libdc1394"
3360 openal_indev_deps="openal"
3361 opengl_outdev_deps="opengl"
3362 opengl_outdev_suggest="sdl2"
3363 oss_indev_deps_any="sys_soundcard_h"
3364 oss_outdev_deps_any="sys_soundcard_h"
3365 pulse_indev_deps="libpulse"
3366 pulse_outdev_deps="libpulse"
3367 sdl2_outdev_deps="sdl2"
3368 sndio_indev_deps="sndio"
3369 sndio_outdev_deps="sndio"
3370 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3371 v4l2_indev_suggest="libv4l2"
3372 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3373 v4l2_outdev_suggest="libv4l2"
3374 vfwcap_indev_deps="vfw32 vfwcap_defines"
3375 xcbgrab_indev_deps="libxcb"
3376 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3377 xv_outdev_deps="xlib"
3378
3379 # protocols
3380 async_protocol_deps="threads"
3381 bluray_protocol_deps="libbluray"
3382 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3383 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl mbedtls"
3384 ffrtmpcrypt_protocol_select="tcp_protocol"
3385 ffrtmphttp_protocol_conflict="librtmp_protocol"
3386 ffrtmphttp_protocol_select="http_protocol"
3387 ftp_protocol_select="tcp_protocol"
3388 gopher_protocol_select="network"
3389 http_protocol_select="tcp_protocol"
3390 http_protocol_suggest="zlib"
3391 httpproxy_protocol_select="tcp_protocol"
3392 httpproxy_protocol_suggest="zlib"
3393 https_protocol_select="tls_protocol"
3394 https_protocol_suggest="zlib"
3395 icecast_protocol_select="http_protocol"
3396 mmsh_protocol_select="http_protocol"
3397 mmst_protocol_select="network"
3398 rtmp_protocol_conflict="librtmp_protocol"
3399 rtmp_protocol_select="tcp_protocol"
3400 rtmp_protocol_suggest="zlib"
3401 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3402 rtmpe_protocol_suggest="zlib"
3403 rtmps_protocol_conflict="librtmp_protocol"
3404 rtmps_protocol_select="tls_protocol"
3405 rtmps_protocol_suggest="zlib"
3406 rtmpt_protocol_select="ffrtmphttp_protocol"
3407 rtmpt_protocol_suggest="zlib"
3408 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3409 rtmpte_protocol_suggest="zlib"
3410 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3411 rtmpts_protocol_suggest="zlib"
3412 rtp_protocol_select="udp_protocol"
3413 schannel_conflict="openssl gnutls libtls mbedtls"
3414 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3415 sctp_protocol_select="network"
3416 securetransport_conflict="openssl gnutls libtls mbedtls"
3417 srtp_protocol_select="rtp_protocol srtp"
3418 tcp_protocol_select="network"
3419 tls_protocol_deps_any="gnutls openssl schannel securetransport libtls mbedtls"
3420 tls_protocol_select="tcp_protocol"
3421 udp_protocol_select="network"
3422 udplite_protocol_select="network"
3423 unix_protocol_deps="sys_un_h"
3424 unix_protocol_select="network"
3425
3426 # external library protocols
3427 librtmp_protocol_deps="librtmp"
3428 librtmpe_protocol_deps="librtmp"
3429 librtmps_protocol_deps="librtmp"
3430 librtmpt_protocol_deps="librtmp"
3431 librtmpte_protocol_deps="librtmp"
3432 libsmbclient_protocol_deps="libsmbclient gplv3"
3433 libsrt_protocol_deps="libsrt"
3434 libsrt_protocol_select="network"
3435 libssh_protocol_deps="libssh"
3436 libtls_conflict="openssl gnutls mbedtls"
3437 libzmq_protocol_deps="libzmq"
3438 libzmq_protocol_select="network"
3439
3440 # filters
3441 afftdn_filter_deps="avcodec"
3442 afftdn_filter_select="fft"
3443 afftfilt_filter_deps="avcodec"
3444 afftfilt_filter_select="fft"
3445 afir_filter_deps="avcodec"
3446 afir_filter_select="rdft"
3447 amovie_filter_deps="avcodec avformat"
3448 aresample_filter_deps="swresample"
3449 asr_filter_deps="pocketsphinx"
3450 ass_filter_deps="libass"
3451 atempo_filter_deps="avcodec"
3452 atempo_filter_select="rdft"
3453 avgblur_opencl_filter_deps="opencl"
3454 azmq_filter_deps="libzmq"
3455 blackframe_filter_deps="gpl"
3456 bm3d_filter_deps="avcodec"
3457 bm3d_filter_select="dct"
3458 boxblur_filter_deps="gpl"
3459 boxblur_opencl_filter_deps="opencl gpl"
3460 bs2b_filter_deps="libbs2b"
3461 colorkey_opencl_filter_deps="opencl"
3462 colormatrix_filter_deps="gpl"
3463 convolution_opencl_filter_deps="opencl"
3464 convolve_filter_deps="avcodec"
3465 convolve_filter_select="fft"
3466 coreimage_filter_deps="coreimage appkit"
3467 coreimage_filter_extralibs="-framework OpenGL"
3468 coreimagesrc_filter_deps="coreimage appkit"
3469 coreimagesrc_filter_extralibs="-framework OpenGL"
3470 cover_rect_filter_deps="avcodec avformat gpl"
3471 cropdetect_filter_deps="gpl"
3472 deconvolve_filter_deps="avcodec"
3473 deconvolve_filter_select="fft"
3474 deinterlace_qsv_filter_deps="libmfx"
3475 deinterlace_vaapi_filter_deps="vaapi"
3476 delogo_filter_deps="gpl"
3477 denoise_vaapi_filter_deps="vaapi"
3478 derain_filter_select="dnn"
3479 deshake_filter_select="pixelutils"
3480 deshake_opencl_filter_deps="opencl"
3481 dilation_opencl_filter_deps="opencl"
3482 dnn_processing_filter_select="dnn"
3483 drawtext_filter_deps="libfreetype"
3484 drawtext_filter_suggest="libfontconfig libfribidi"
3485 elbg_filter_deps="avcodec"
3486 eq_filter_deps="gpl"
3487 erosion_opencl_filter_deps="opencl"
3488 fftfilt_filter_deps="avcodec"
3489 fftfilt_filter_select="rdft"
3490 fftdnoiz_filter_deps="avcodec"
3491 fftdnoiz_filter_select="fft"
3492 find_rect_filter_deps="avcodec avformat gpl"
3493 firequalizer_filter_deps="avcodec"
3494 firequalizer_filter_select="rdft"
3495 flite_filter_deps="libflite"
3496 framerate_filter_select="scene_sad"
3497 freezedetect_filter_select="scene_sad"
3498 frei0r_filter_deps="frei0r libdl"
3499 frei0r_src_filter_deps="frei0r libdl"
3500 fspp_filter_deps="gpl"
3501 geq_filter_deps="gpl"
3502 histeq_filter_deps="gpl"
3503 hqdn3d_filter_deps="gpl"
3504 interlace_filter_deps="gpl"
3505 kerndeint_filter_deps="gpl"
3506 ladspa_filter_deps="ladspa libdl"
3507 lensfun_filter_deps="liblensfun version3"
3508 lv2_filter_deps="lv2"
3509 mcdeint_filter_deps="avcodec gpl"
3510 movie_filter_deps="avcodec avformat"
3511 mpdecimate_filter_deps="gpl"
3512 mpdecimate_filter_select="pixelutils"
3513 minterpolate_filter_select="scene_sad"
3514 mptestsrc_filter_deps="gpl"
3515 negate_filter_deps="lut_filter"
3516 nlmeans_opencl_filter_deps="opencl"
3517 nnedi_filter_deps="gpl"
3518 ocr_filter_deps="libtesseract"
3519 ocv_filter_deps="libopencv"
3520 openclsrc_filter_deps="opencl"
3521 overlay_opencl_filter_deps="opencl"
3522 overlay_qsv_filter_deps="libmfx"
3523 overlay_qsv_filter_select="qsvvpp"
3524 owdenoise_filter_deps="gpl"
3525 pan_filter_deps="swresample"
3526 perspective_filter_deps="gpl"
3527 phase_filter_deps="gpl"
3528 pp7_filter_deps="gpl"
3529 pp_filter_deps="gpl postproc"
3530 prewitt_opencl_filter_deps="opencl"
3531 procamp_vaapi_filter_deps="vaapi"
3532 program_opencl_filter_deps="opencl"
3533 pullup_filter_deps="gpl"
3534 removelogo_filter_deps="avcodec avformat swscale"
3535 repeatfields_filter_deps="gpl"
3536 resample_filter_deps="avresample"
3537 roberts_opencl_filter_deps="opencl"
3538 rubberband_filter_deps="librubberband"
3539 sab_filter_deps="gpl swscale"
3540 scale2ref_filter_deps="swscale"
3541 scale_filter_deps="swscale"
3542 scale_qsv_filter_deps="libmfx"
3543 select_filter_select="scene_sad"
3544 sharpness_vaapi_filter_deps="vaapi"
3545 showcqt_filter_deps="avcodec avformat swscale"
3546 showcqt_filter_suggest="libfontconfig libfreetype"
3547 showcqt_filter_select="fft"
3548 showfreqs_filter_deps="avcodec"
3549 showfreqs_filter_select="fft"
3550 showspectrum_filter_deps="avcodec"
3551 showspectrum_filter_select="fft"
3552 showspectrumpic_filter_deps="avcodec"
3553 showspectrumpic_filter_select="fft"
3554 signature_filter_deps="gpl avcodec avformat"
3555 sinc_filter_select="rdft"
3556 smartblur_filter_deps="gpl swscale"
3557 sobel_opencl_filter_deps="opencl"
3558 sofalizer_filter_deps="libmysofa avcodec"
3559 sofalizer_filter_select="fft"
3560 spectrumsynth_filter_deps="avcodec"
3561 spectrumsynth_filter_select="fft"
3562 spp_filter_deps="gpl avcodec"
3563 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3564 sr_filter_deps="avformat swscale"
3565 sr_filter_select="dnn"
3566 stereo3d_filter_deps="gpl"
3567 subtitles_filter_deps="avformat avcodec libass"
3568 super2xsai_filter_deps="gpl"
3569 pixfmts_super2xsai_test_deps="super2xsai_filter"
3570 superequalizer_filter_select="rdft"
3571 surround_filter_select="rdft"
3572 tinterlace_filter_deps="gpl"
3573 tinterlace_merge_test_deps="tinterlace_filter"
3574 tinterlace_pad_test_deps="tinterlace_filter"
3575 tonemap_filter_deps="const_nan"
3576 tonemap_opencl_filter_deps="opencl const_nan"
3577 transpose_opencl_filter_deps="opencl"
3578 transpose_vaapi_filter_deps="vaapi VAProcPipelineCaps_rotation_flags"
3579 unsharp_opencl_filter_deps="opencl"
3580 uspp_filter_deps="gpl avcodec"
3581 vaguedenoiser_filter_deps="gpl"
3582 vidstabdetect_filter_deps="libvidstab"
3583 vidstabtransform_filter_deps="libvidstab"
3584 libvmaf_filter_deps="libvmaf pthreads"
3585 zmq_filter_deps="libzmq"
3586 zoompan_filter_deps="swscale"
3587 zscale_filter_deps="libzimg const_nan"
3588 scale_vaapi_filter_deps="vaapi"
3589 vpp_qsv_filter_deps="libmfx"
3590 vpp_qsv_filter_select="qsvvpp"
3591 yadif_cuda_filter_deps="ffnvcodec"
3592 yadif_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3593
3594 # examples
3595 avio_dir_cmd_deps="avformat avutil"
3596 avio_reading_deps="avformat avcodec avutil"
3597 decode_audio_example_deps="avcodec avutil"
3598 decode_video_example_deps="avcodec avutil"
3599 demuxing_decoding_example_deps="avcodec avformat avutil"
3600 encode_audio_example_deps="avcodec avutil"
3601 encode_video_example_deps="avcodec avutil"
3602 extract_mvs_example_deps="avcodec avformat avutil"
3603 filter_audio_example_deps="avfilter avutil"
3604 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3605 filtering_video_example_deps="avfilter avcodec avformat avutil"
3606 http_multiclient_example_deps="avformat avutil fork"
3607 hw_decode_example_deps="avcodec avformat avutil"
3608 metadata_example_deps="avformat avutil"
3609 muxing_example_deps="avcodec avformat avutil swscale"
3610 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3611 remuxing_example_deps="avcodec avformat avutil"
3612 resampling_audio_example_deps="avutil swresample"
3613 scaling_video_example_deps="avutil swscale"
3614 transcode_aac_example_deps="avcodec avformat swresample"
3615 transcoding_example_deps="avfilter avcodec avformat avutil"
3616 vaapi_encode_example_deps="avcodec avutil h264_vaapi_encoder"
3617 vaapi_transcode_example_deps="avcodec avformat avutil h264_vaapi_encoder"
3618
3619 # EXTRALIBS_LIST
3620 cpu_init_extralibs="pthreads_extralibs"
3621 cws2fws_extralibs="zlib_extralibs"
3622
3623 # libraries, in any order
3624 avcodec_deps="avutil"
3625 avcodec_suggest="libm"
3626 avcodec_select="null_bsf"
3627 avdevice_deps="avformat avcodec avutil"
3628 avdevice_suggest="libm"
3629 avfilter_deps="avutil"
3630 avfilter_suggest="libm"
3631 avformat_deps="avcodec avutil"
3632 avformat_suggest="libm network zlib"
3633 avresample_deps="avutil"
3634 avresample_suggest="libm"
3635 avutil_suggest="clock_gettime ffnvcodec libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia bcrypt"
3636 postproc_deps="avutil gpl"
3637 postproc_suggest="libm"
3638 swresample_deps="avutil"
3639 swresample_suggest="libm libsoxr"
3640 swscale_deps="avutil"
3641 swscale_suggest="libm"
3642
3643 avcodec_extralibs="pthreads_extralibs iconv_extralibs dxva2_extralibs"
3644 avfilter_extralibs="pthreads_extralibs"
3645 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3646
3647 # programs
3648 ffmpeg_deps="avcodec avfilter avformat"
3649 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3650                hflip_filter null_filter
3651                transpose_filter trim_filter vflip_filter"
3652 ffmpeg_suggest="ole32 psapi shell32"
3653 ffplay_deps="avcodec avformat swscale swresample sdl2"
3654 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3655 ffplay_suggest="shell32"
3656 ffprobe_deps="avcodec avformat"
3657 ffprobe_suggest="shell32"
3658
3659 # documentation
3660 podpages_deps="perl"
3661 manpages_deps="perl pod2man"
3662 htmlpages_deps="perl"
3663 htmlpages_deps_any="makeinfo_html texi2html"
3664 txtpages_deps="perl makeinfo"
3665 doc_deps_any="manpages htmlpages podpages txtpages"
3666
3667 # default parameters
3668
3669 logfile="ffbuild/config.log"
3670
3671 # installation paths
3672 prefix_default="/usr/local"
3673 bindir_default='${prefix}/bin'
3674 datadir_default='${prefix}/share/ffmpeg'
3675 docdir_default='${prefix}/share/doc/ffmpeg'
3676 incdir_default='${prefix}/include'
3677 libdir_default='${prefix}/lib'
3678 mandir_default='${prefix}/share/man'
3679
3680 # toolchain
3681 ar_default="ar"
3682 cc_default="gcc"
3683 cxx_default="g++"
3684 host_cc_default="gcc"
3685 doxygen_default="doxygen"
3686 install="install"
3687 ln_s_default="ln -s -f"
3688 nm_default="nm -g"
3689 pkg_config_default=pkg-config
3690 ranlib_default="ranlib"
3691 strip_default="strip"
3692 version_script='--version-script'
3693 objformat="elf32"
3694 x86asmexe_default="nasm"
3695 windres_default="windres"
3696 striptype="direct"
3697
3698 # OS
3699 target_os_default=$(tolower $(uname -s))
3700 host_os=$target_os_default
3701
3702 # machine
3703 if test "$target_os_default" = aix; then
3704     arch_default=$(uname -p)
3705     strip_default="strip -X32_64"
3706     nm_default="nm -g -X32_64"
3707 else
3708     arch_default=$(uname -m)
3709 fi
3710 cpu="generic"
3711 intrinsics="none"
3712
3713 # configurable options
3714 enable $PROGRAM_LIST
3715 enable $DOCUMENT_LIST
3716 enable $EXAMPLE_LIST
3717 enable $(filter_out avresample $LIBRARY_LIST)
3718 enable stripping
3719
3720 enable asm
3721 enable debug
3722 enable doc
3723 enable faan faandct faanidct
3724 enable optimizations
3725 enable runtime_cpudetect
3726 enable safe_bitstream_reader
3727 enable static
3728 enable swscale_alpha
3729 enable valgrind_backtrace
3730
3731 sws_max_filter_size_default=256
3732 set_default sws_max_filter_size
3733
3734 # internal components are enabled by default
3735 enable $EXTRALIBS_LIST
3736
3737 # Avoid external, non-system, libraries getting enabled by dependency resolution
3738 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3739
3740 # build settings
3741 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3742 LIBPREF="lib"
3743 LIBSUF=".a"
3744 FULLNAME='$(NAME)$(BUILDSUF)'
3745 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3746 SLIBPREF="lib"
3747 SLIBSUF=".so"
3748 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3749 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3750 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3751 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3752 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3753 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3754 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3755
3756 asflags_filter=echo
3757 cflags_filter=echo
3758 ldflags_filter=echo
3759
3760 AS_C='-c'
3761 AS_O='-o $@'
3762 CC_C='-c'
3763 CC_E='-E -o $@'
3764 CC_O='-o $@'
3765 CXX_C='-c'
3766 CXX_O='-o $@'
3767 OBJCC_C='-c'
3768 OBJCC_E='-E -o $@'
3769 OBJCC_O='-o $@'
3770 X86ASM_O='-o $@'
3771 LD_O='-o $@'
3772 LD_LIB='-l%'
3773 LD_PATH='-L'
3774 HOSTCC_C='-c'
3775 HOSTCC_E='-E -o $@'
3776 HOSTCC_O='-o $@'
3777 HOSTLD_O='-o $@'
3778 NVCC_C='-c'
3779 NVCC_O='-o $@'
3780
3781 host_extralibs='-lm'
3782 host_cflags_filter=echo
3783 host_ldflags_filter=echo
3784
3785 target_path='$(CURDIR)'
3786
3787 # since the object filename is not given with the -MM flag, the compiler
3788 # is only able to print the basename, and we must add the path ourselves
3789 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3790 DEPFLAGS='-MM'
3791
3792 mkdir -p ffbuild
3793
3794 # find source path
3795 if test -f configure; then
3796     source_path=.
3797 elif test -f src/configure; then
3798     source_path=src
3799 else
3800     source_path=$(cd $(dirname "$0"); pwd)
3801     case "$source_path" in
3802         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3803     esac
3804     test -e "$source_path/config.h" &&
3805         die "Out of tree builds are impossible with config.h in source dir."
3806 fi
3807
3808 for v in "$@"; do
3809     r=${v#*=}
3810     l=${v%"$r"}
3811     r=$(sh_quote "$r")
3812     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3813 done
3814
3815 find_things_extern(){
3816     thing=$1
3817     pattern=$2
3818     file=$source_path/$3
3819     out=${4:-$thing}
3820     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$out/p" "$file"
3821 }
3822
3823 find_filters_extern(){
3824     file=$source_path/$1
3825     sed -n 's/^extern AVFilter ff_[avfsinkrc]\{2,5\}_\([[:alnum:]_]\{1,\}\);/\1_filter/p' $file
3826 }
3827
3828 FILTER_LIST=$(find_filters_extern libavfilter/allfilters.c)
3829 OUTDEV_LIST=$(find_things_extern muxer AVOutputFormat libavdevice/alldevices.c outdev)
3830 INDEV_LIST=$(find_things_extern demuxer AVInputFormat libavdevice/alldevices.c indev)
3831 MUXER_LIST=$(find_things_extern muxer AVOutputFormat libavformat/allformats.c)
3832 DEMUXER_LIST=$(find_things_extern demuxer AVInputFormat libavformat/allformats.c)
3833 ENCODER_LIST=$(find_things_extern encoder AVCodec libavcodec/allcodecs.c)
3834 DECODER_LIST=$(find_things_extern decoder AVCodec libavcodec/allcodecs.c)
3835 CODEC_LIST="
3836     $ENCODER_LIST
3837     $DECODER_LIST
3838 "
3839 PARSER_LIST=$(find_things_extern parser AVCodecParser libavcodec/parsers.c)
3840 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3841 HWACCEL_LIST=$(find_things_extern hwaccel AVHWAccel libavcodec/hwaccels.h)
3842 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3843
3844 AVCODEC_COMPONENTS_LIST="
3845     $BSF_LIST
3846     $DECODER_LIST
3847     $ENCODER_LIST
3848     $HWACCEL_LIST
3849     $PARSER_LIST
3850 "
3851
3852 AVDEVICE_COMPONENTS_LIST="
3853     $INDEV_LIST
3854     $OUTDEV_LIST
3855 "
3856
3857 AVFILTER_COMPONENTS_LIST="
3858     $FILTER_LIST
3859 "
3860
3861 AVFORMAT_COMPONENTS_LIST="
3862     $DEMUXER_LIST
3863     $MUXER_LIST
3864     $PROTOCOL_LIST
3865 "
3866
3867 ALL_COMPONENTS="
3868     $AVCODEC_COMPONENTS_LIST
3869     $AVDEVICE_COMPONENTS_LIST
3870     $AVFILTER_COMPONENTS_LIST
3871     $AVFORMAT_COMPONENTS_LIST
3872 "
3873
3874 for n in $COMPONENT_LIST; do
3875     v=$(toupper ${n%s})_LIST
3876     eval enable \$$v
3877     eval ${n}_if_any="\$$v"
3878 done
3879
3880 enable $ARCH_EXT_LIST
3881
3882 die_unknown(){
3883     echo "Unknown option \"$1\"."
3884     echo "See $0 --help for available options."
3885     exit 1
3886 }
3887
3888 print_in_columns() {
3889     tr ' ' '\n' | sort | tr '\r\n' '  ' | awk -v col_width=24 -v width="$ncols" '
3890     {
3891         num_cols = width > col_width ? int(width / col_width) : 1;
3892         num_rows = int((NF + num_cols-1) / num_cols);
3893         y = x = 1;
3894         for (y = 1; y <= num_rows; y++) {
3895             i = y;
3896             for (x = 1; x <= num_cols; x++) {
3897                 if (i <= NF) {
3898                   line = sprintf("%s%-" col_width "s", line, $i);
3899                 }
3900                 i = i + num_rows;
3901             }
3902             print line; line = "";
3903         }
3904     }' | sed 's/ *$//'
3905 }
3906
3907 show_list() {
3908     suffix=_$1
3909     shift
3910     echo $* | sed s/$suffix//g | print_in_columns
3911     exit 0
3912 }
3913
3914 rand_list(){
3915     IFS=', '
3916     set -- $*
3917     unset IFS
3918     for thing; do
3919         comp=${thing%:*}
3920         prob=${thing#$comp}
3921         prob=${prob#:}
3922         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3923         echo "prob ${prob:-0.5}"
3924         printf '%s\n' $comp
3925     done
3926 }
3927
3928 do_random(){
3929     action=$1
3930     shift
3931     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3932     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3933 }
3934
3935 for opt do
3936     optval="${opt#*=}"
3937     case "$opt" in
3938         --extra-ldflags=*)
3939             add_ldflags $optval
3940         ;;
3941         --extra-ldexeflags=*)
3942             add_ldexeflags $optval
3943         ;;
3944         --extra-ldsoflags=*)
3945             add_ldsoflags $optval
3946         ;;
3947         --extra-ldlibflags=*)
3948             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3949                  "removed in the future. Use --extra-ldsoflags instead."
3950             add_ldsoflags $optval
3951         ;;
3952         --extra-libs=*)
3953             add_extralibs $optval
3954         ;;
3955         --disable-devices)
3956             disable $INDEV_LIST $OUTDEV_LIST
3957         ;;
3958         --enable-debug=*)
3959             debuglevel="$optval"
3960         ;;
3961         --disable-programs)
3962             disable $PROGRAM_LIST
3963         ;;
3964         --disable-everything)
3965             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3966         ;;
3967         --disable-all)
3968             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3969             disable $LIBRARY_LIST $PROGRAM_LIST doc
3970             enable avutil
3971         ;;
3972         --enable-random|--disable-random)
3973             action=${opt%%-random}
3974             do_random ${action#--} $COMPONENT_LIST
3975         ;;
3976         --enable-random=*|--disable-random=*)
3977             action=${opt%%-random=*}
3978             do_random ${action#--} $optval
3979         ;;
3980         --enable-sdl)
3981             enable sdl2
3982         ;;
3983         --enable-*=*|--disable-*=*)
3984             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3985             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3986             eval list=\$$(toupper $thing)_LIST
3987             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3988             list=$(filter "$name" $list)
3989             [ "$list" = "" ] && warn "Option $opt did not match anything"
3990             test $action = enable && warn_if_gets_disabled $list
3991             $action $list
3992         ;;
3993         --enable-yasm|--disable-yasm)
3994             warn "The ${opt} option is only provided for compatibility and will be\n"\
3995                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3996             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3997         ;;
3998         --yasmexe=*)
3999             warn "The --yasmexe option is only provided for compatibility and will be\n"\
4000                  "removed in the future. Use --x86asmexe instead."
4001             x86asmexe="$optval"
4002         ;;
4003         --enable-?*|--disable-?*)
4004             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
4005             if is_in $option $COMPONENT_LIST; then
4006                 test $action = disable && action=unset
4007                 eval $action \$$(toupper ${option%s})_LIST
4008             elif is_in $option $CMDLINE_SELECT; then
4009                 $action $option
4010             else
4011                 die_unknown $opt
4012             fi
4013         ;;
4014         --list-*)
4015             NAME="${opt#--list-}"
4016             is_in $NAME $COMPONENT_LIST || die_unknown $opt
4017             NAME=${NAME%s}
4018             eval show_list $NAME \$$(toupper $NAME)_LIST
4019         ;;
4020         --help|-h) show_help
4021         ;;
4022         --quiet|-q) quiet=yes
4023         ;;
4024         --fatal-warnings) enable fatal_warnings
4025         ;;
4026         --libfuzzer=*)
4027             libfuzzer_path="$optval"
4028         ;;
4029         *)
4030             optname="${opt%%=*}"
4031             optname="${optname#--}"
4032             optname=$(echo "$optname" | sed 's/-/_/g')
4033             if is_in $optname $CMDLINE_SET; then
4034                 eval $optname='$optval'
4035             elif is_in $optname $CMDLINE_APPEND; then
4036                 append $optname "$optval"
4037             else
4038                 die_unknown $opt
4039             fi
4040         ;;
4041     esac
4042 done
4043
4044 for e in $env; do
4045     eval "export $e"
4046 done
4047
4048 if disabled autodetect; then
4049
4050     # Unless iconv is explicitely disabled by the user, we still want to probe
4051     # for the iconv from the libc.
4052     disabled iconv || enable libc_iconv
4053
4054     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
4055     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
4056 fi
4057 # Mark specifically enabled, but normally autodetected libraries as requested.
4058 for lib in $AUTODETECT_LIBS; do
4059     enabled $lib && request $lib
4060 done
4061 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
4062 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
4063 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
4064
4065 disabled logging && logfile=/dev/null
4066
4067 # command line configuration sanity checks
4068
4069 # we need to build at least one lib type
4070 if ! enabled_any static shared; then
4071     cat <<EOF
4072 At least one library type must be built.
4073 Specify --enable-static to build the static libraries or --enable-shared to
4074 build the shared libraries as well. To only build the shared libraries specify
4075 --disable-static in addition to --enable-shared.
4076 EOF
4077     exit 1
4078 fi
4079
4080 die_license_disabled() {
4081     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
4082 }
4083
4084 die_license_disabled_gpl() {
4085     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
4086 }
4087
4088 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
4089 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
4090
4091 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
4092 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
4093
4094 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4095
4096 if enabled nonfree; then
4097     license="nonfree and unredistributable"
4098 elif enabled gplv3; then
4099     license="GPL version 3 or later"
4100 elif enabled lgplv3; then
4101     license="LGPL version 3 or later"
4102 elif enabled gpl; then
4103     license="GPL version 2 or later"
4104 else
4105     license="LGPL version 2.1 or later"
4106 fi
4107
4108 enabled_all gnutls openssl &&
4109     die "GnuTLS and OpenSSL must not be enabled at the same time."
4110
4111 enabled_all gnutls mbedtls &&
4112     die "GnuTLS and mbedTLS must not be enabled at the same time."
4113
4114 enabled_all openssl mbedtls &&
4115     die "OpenSSL and mbedTLS must not be enabled at the same time."
4116
4117 # Disable all the library-specific components if the library itself
4118 # is disabled, see AVCODEC_LIST and following _LIST variables.
4119
4120 disable_components(){
4121     disabled ${1} && disable $(
4122         eval components="\$$(toupper ${1})_COMPONENTS"
4123         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
4124     )
4125 }
4126
4127 map 'disable_components $v' $LIBRARY_LIST
4128
4129 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
4130 set >> $logfile
4131
4132 test -n "$valgrind" && toolchain="valgrind-memcheck"
4133
4134 enabled ossfuzz && ! echo $CFLAGS | grep -q -- "-fsanitize="  && ! echo $CFLAGS | grep -q -- "-fcoverage-mapping" &&{
4135     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
4136     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
4137 }
4138
4139 case "$toolchain" in
4140     *-asan)
4141         cc_default="${toolchain%-asan}"
4142         add_cflags  -fsanitize=address
4143         add_ldflags -fsanitize=address
4144     ;;
4145     *-msan)
4146         cc_default="${toolchain%-msan}"
4147         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
4148         add_ldflags -fsanitize=memory
4149     ;;
4150     *-tsan)
4151         cc_default="${toolchain%-tsan}"
4152         add_cflags  -fsanitize=thread
4153         add_ldflags -fsanitize=thread
4154         case "$toolchain" in
4155             gcc-tsan)
4156                 add_cflags  -fPIC
4157                 add_ldflags -fPIC
4158                 ;;
4159         esac
4160     ;;
4161     *-usan)
4162         cc_default="${toolchain%-usan}"
4163         add_cflags  -fsanitize=undefined
4164         add_ldflags -fsanitize=undefined
4165     ;;
4166     valgrind-*)
4167         target_exec_default="valgrind"
4168         case "$toolchain" in
4169             valgrind-massif)
4170                 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"
4171                 ;;
4172             valgrind-memcheck)
4173                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
4174                 ;;
4175         esac
4176     ;;
4177     msvc)
4178         # Check whether the current MSVC version needs the C99 converter.
4179         # From MSVC 2013 (compiler major version 18) onwards, it does actually
4180         # support enough of C99 to build ffmpeg. Default to the new
4181         # behaviour if the regexp was unable to match anything, since this
4182         # successfully parses the version number of existing supported
4183         # versions that require the converter (MSVC 2010 and 2012).
4184         cl_major_ver=$(cl.exe 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
4185         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
4186             cc_default="cl.exe"
4187             cxx_default="cl.exe"
4188         else
4189             die "Unsupported MSVC version (2013 or newer required)"
4190         fi
4191         ld_default="$source_path/compat/windows/mslink"
4192         nm_default="dumpbin.exe -symbols"
4193         ar_default="lib.exe"
4194         case "$arch" in
4195         aarch64|arm64)
4196             as_default="armasm64.exe"
4197             ;;
4198         arm*)
4199             as_default="armasm.exe"
4200             ;;
4201         esac
4202         target_os_default="win32"
4203         # Use a relative path for TMPDIR. This makes sure all the
4204         # ffconf temp files are written with a relative path, avoiding
4205         # issues with msys/win32 path conversion for MSVC parameters
4206         # such as -Fo<file> or -out:<file>.
4207         TMPDIR=.
4208     ;;
4209     icl)
4210         cc_default="icl"
4211         ld_default="xilink"
4212         nm_default="dumpbin -symbols"
4213         ar_default="xilib"
4214         target_os_default="win32"
4215         TMPDIR=.
4216     ;;
4217     gcov)
4218         add_cflags  -fprofile-arcs -ftest-coverage
4219         add_ldflags -fprofile-arcs -ftest-coverage
4220     ;;
4221     llvm-cov)
4222         add_cflags -fprofile-arcs -ftest-coverage
4223         add_ldflags --coverage
4224     ;;
4225     hardened)
4226         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
4227         add_cflags   -fno-strict-overflow -fstack-protector-all
4228         add_ldflags  -Wl,-z,relro -Wl,-z,now
4229         add_cflags   -fPIE
4230         add_ldexeflags -fPIE -pie
4231     ;;
4232     ?*)
4233         die "Unknown toolchain $toolchain"
4234     ;;
4235 esac
4236
4237 if test -n "$cross_prefix"; then
4238     test -n "$arch" && test -n "$target_os" ||
4239         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
4240     enable cross_compile
4241 fi
4242
4243 set_default target_os
4244 if test "$target_os" = android; then
4245     cc_default="clang"
4246 fi
4247
4248 ar_default="${cross_prefix}${ar_default}"
4249 cc_default="${cross_prefix}${cc_default}"
4250 cxx_default="${cross_prefix}${cxx_default}"
4251 nm_default="${cross_prefix}${nm_default}"
4252 pkg_config_default="${cross_prefix}${pkg_config_default}"
4253 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
4254     ranlib_default="${cross_prefix}${ranlib_default} -D"
4255 else
4256     ranlib_default="${cross_prefix}${ranlib_default}"
4257 fi
4258 strip_default="${cross_prefix}${strip_default}"
4259 windres_default="${cross_prefix}${windres_default}"
4260
4261 sysinclude_default="${sysroot}/usr/include"
4262
4263 if enabled cuda_sdk; then
4264     warn "Option --enable-cuda-sdk is deprecated. Use --enable-cuda-nvcc instead."
4265     enable cuda_nvcc
4266 fi
4267
4268 if enabled cuda_nvcc; then
4269     nvcc_default="nvcc"
4270     nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
4271 else
4272     nvcc_default="clang"
4273     nvccflags_default="--cuda-gpu-arch=sm_30 -O2"
4274     NVCC_C=""
4275 fi
4276
4277 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
4278     target_exec x86asmexe nvcc
4279 enabled cross_compile || host_cc_default=$cc
4280 set_default host_cc
4281
4282 pkg_config_fail_message=""
4283 if ! $pkg_config --version >/dev/null 2>&1; then
4284     warn "$pkg_config not found, library detection may fail."
4285     pkg_config=false
4286 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
4287     pkg_config_fail_message="
4288 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
4289 fi
4290
4291 if test $doxygen != $doxygen_default && \
4292   ! $doxygen --version >/dev/null 2>&1; then
4293     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
4294 fi
4295
4296 exesuf() {
4297     case $1 in
4298         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
4299     esac
4300 }
4301
4302 EXESUF=$(exesuf $target_os)
4303 HOSTEXESUF=$(exesuf $host_os)
4304
4305 # set temporary file name
4306 : ${TMPDIR:=$TEMPDIR}
4307 : ${TMPDIR:=$TMP}
4308 : ${TMPDIR:=/tmp}
4309
4310 if [ -n "$tempprefix" ] ; then
4311     mktemp(){
4312         tmpname="$tempprefix.${HOSTNAME}.${UID}"
4313         echo "$tmpname"
4314         mkdir "$tmpname"
4315     }
4316 elif ! test_cmd mktemp -u XXXXXX; then
4317     # simple replacement for missing mktemp
4318     # NOT SAFE FOR GENERAL USE
4319     mktemp(){
4320         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
4321         echo "$tmpname"
4322         mkdir "$tmpname"
4323     }
4324 fi
4325
4326 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
4327     die "Unable to create temporary directory in $TMPDIR."
4328
4329 tmpfile(){
4330     tmp="${FFTMPDIR}/test"$2
4331     (set -C; exec > $tmp) 2> /dev/null ||
4332         die "Unable to create temporary file in $FFTMPDIR."
4333     eval $1=$tmp
4334 }
4335
4336 trap 'rm -rf -- "$FFTMPDIR"' EXIT
4337 trap 'exit 2' INT
4338
4339 tmpfile TMPASM .asm
4340 tmpfile TMPC   .c
4341 tmpfile TMPCPP .cpp
4342 tmpfile TMPE   $EXESUF
4343 tmpfile TMPH   .h
4344 tmpfile TMPM   .m
4345 tmpfile TMPCU  .cu
4346 tmpfile TMPO   .o
4347 tmpfile TMPS   .S
4348 tmpfile TMPSH  .sh
4349 tmpfile TMPV   .ver
4350
4351 unset -f mktemp
4352
4353 chmod +x $TMPE
4354
4355 # make sure we can execute files in $TMPDIR
4356 cat > $TMPSH 2>> $logfile <<EOF
4357 #! /bin/sh
4358 EOF
4359 chmod +x $TMPSH >> $logfile 2>&1
4360 if ! $TMPSH >> $logfile 2>&1; then
4361     cat <<EOF
4362 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
4363 variable to another directory and make sure that it is not mounted noexec.
4364 EOF
4365     die "Sanity test failed."
4366 fi
4367
4368 armasm_flags(){
4369     for flag; do
4370         case $flag in
4371             # Filter out MSVC cl.exe options from cflags that shouldn't
4372             # be passed to gas-preprocessor
4373             -M[TD]*)                                            ;;
4374             *)                  echo $flag                      ;;
4375         esac
4376    done
4377 }
4378
4379 cparser_flags(){
4380     for flag; do
4381         case $flag in
4382             -Wno-switch)             echo -Wno-switch-enum ;;
4383             -Wno-format-zero-length) ;;
4384             -Wdisabled-optimization) ;;
4385             -Wno-pointer-sign)       echo -Wno-other ;;
4386             *)                       echo $flag ;;
4387         esac
4388     done
4389 }
4390
4391 msvc_common_flags(){
4392     for flag; do
4393         case $flag in
4394             # In addition to specifying certain flags under the compiler
4395             # specific filters, they must be specified here as well or else the
4396             # generic catch all at the bottom will print the original flag.
4397             -Wall)                ;;
4398             -Wextra)              ;;
4399             -std=c99)             ;;
4400             # Common flags
4401             -fomit-frame-pointer) ;;
4402             -g)                   echo -Z7 ;;
4403             -fno-math-errno)      ;;
4404             -fno-common)          ;;
4405             -fno-signed-zeros)    ;;
4406             -fPIC)                ;;
4407             -mthumb)              ;;
4408             -march=*)             ;;
4409             -lz)                  echo zlib.lib ;;
4410             -lx264)               echo libx264.lib ;;
4411             -lstdc++)             ;;
4412             -l*)                  echo ${flag#-l}.lib ;;
4413             -LARGEADDRESSAWARE)   echo $flag ;;
4414             -L*)                  echo -libpath:${flag#-L} ;;
4415             *)                    echo $flag ;;
4416         esac
4417     done
4418 }
4419
4420 msvc_flags(){
4421     msvc_common_flags "$@"
4422     for flag; do
4423         case $flag in
4424             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4425                                        -wd4554 ;;
4426             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4427                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4428                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4429                                        -wd4307 \
4430                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4431         esac
4432     done
4433 }
4434
4435 icl_flags(){
4436     msvc_common_flags "$@"
4437     for flag; do
4438         case $flag in
4439             # Despite what Intel's documentation says -Wall, which is supported
4440             # on Windows, does enable remarks so disable them here.
4441             -Wall)                echo $flag -Qdiag-disable:remark ;;
4442             -std=c99)             echo -Qstd=c99 ;;
4443             -flto)                echo -ipo ;;
4444         esac
4445     done
4446 }
4447
4448 icc_flags(){
4449     for flag; do
4450         case $flag in
4451             -flto)                echo -ipo ;;
4452             *)                    echo $flag ;;
4453         esac
4454     done
4455 }
4456
4457 suncc_flags(){
4458     for flag; do
4459         case $flag in
4460             -march=*|-mcpu=*)
4461                 case "${flag#*=}" in
4462                     native)                   echo -xtarget=native       ;;
4463                     v9|niagara)               echo -xarch=sparc          ;;
4464                     ultrasparc)               echo -xarch=sparcvis       ;;
4465                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4466                     i586|pentium)             echo -xchip=pentium        ;;
4467                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4468                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4469                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4470                     pentium4*)          echo -xtarget=pentium4           ;;
4471                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4472                     *-sse3)             echo -xarch=sse3                 ;;
4473                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4474                     bonnell)                   echo -xarch=ssse3         ;;
4475                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4476                     westmere)                  echo -xtarget=westmere    ;;
4477                     silvermont)                echo -xarch=sse4_2        ;;
4478                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4479                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4480                                                echo -xarch=avx           ;;
4481                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4482                     btver1)                    echo -xarch=amdsse4a      ;;
4483                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4484                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4485                     k8|opteron|athlon64|athlon-fx)
4486                                                echo -xarch=sse2a         ;;
4487                     athlon*)                   echo -xarch=pentium_proa  ;;
4488                 esac
4489                 ;;
4490             -std=c99)             echo -xc99              ;;
4491             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4492             -fPIC)                echo -KPIC -xcode=pic32 ;;
4493             -W*,*)                echo $flag              ;;
4494             -f*-*|-W*|-mimpure-text)                      ;;
4495             -shared)              echo -G                 ;;
4496             *)                    echo $flag              ;;
4497         esac
4498     done
4499 }
4500
4501 probe_cc(){
4502     pfx=$1
4503     _cc=$2
4504     first=$3
4505
4506     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4507     unset _ld_o _ldflags _ld_lib _ld_path
4508     unset _depflags _DEPCMD _DEPFLAGS
4509     _flags_filter=echo
4510
4511     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4512         true # no-op to avoid reading stdin in following checks
4513     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4514         _type=llvm_gcc
4515         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4516         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4517         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4518         _cflags_speed='-O3'
4519         _cflags_size='-Os'
4520     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4521         _type=gcc
4522         gcc_version=$($_cc --version | head -n1)
4523         gcc_basever=$($_cc -dumpversion)
4524         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4525         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4526         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4527         case $gcc_basever in
4528             2) ;;
4529             2.*) ;;
4530             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4531         esac
4532         if [ "$first" = true ]; then
4533             case $gcc_basever in
4534                 4.2*)
4535                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4536             esac
4537         fi
4538         _cflags_speed='-O3'
4539         _cflags_size='-Os'
4540     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4541         _type=icc
4542         _ident=$($_cc --version | head -n1)
4543         _depflags='-MMD'
4544         _cflags_speed='-O3'
4545         _cflags_size='-Os'
4546         _cflags_noopt='-O1'
4547         _flags_filter=icc_flags
4548     elif $_cc -v 2>&1 | grep -q xlc; then
4549         _type=xlc
4550         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4551         _cflags_speed='-O5'
4552         _cflags_size='-O5 -qcompact'
4553     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4554         test -d "$sysroot" || die "No valid sysroot specified."
4555         _type=armcc
4556         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4557         armcc_conf="$PWD/armcc.conf"
4558         $_cc --arm_linux_configure                 \
4559              --arm_linux_config_file="$armcc_conf" \
4560              --configure_sysroot="$sysroot"        \
4561              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4562              die "Error creating armcc configuration file."
4563         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4564         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4565         as_default="${cross_prefix}gcc"
4566         _depflags='-MMD'
4567         _cflags_speed='-O3'
4568         _cflags_size='-Os'
4569     elif $_cc -v 2>&1 | grep -q clang && ! $_cc -? > /dev/null 2>&1; then
4570         _type=clang
4571         _ident=$($_cc --version 2>/dev/null | head -n1)
4572         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4573         _cflags_speed='-O3'
4574         _cflags_size='-Oz'
4575     elif $_cc -V 2>&1 | grep -q Sun; then
4576         _type=suncc
4577         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4578         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4579         _DEPFLAGS='-xM1 -xc99'
4580         _ldflags='-std=c99'
4581         _cflags_speed='-O5'
4582         _cflags_size='-O5 -xspace'
4583         _flags_filter=suncc_flags
4584     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4585         _type=pathscale
4586         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4587         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4588         _cflags_speed='-O2'
4589         _cflags_size='-Os'
4590         _flags_filter='filter_out -Wdisabled-optimization'
4591     elif $_cc -v 2>&1 | grep -q Open64; then
4592         _type=open64
4593         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4594         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4595         _cflags_speed='-O2'
4596         _cflags_size='-Os'
4597         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4598     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4599         _type=armasm
4600         _ident=$($_cc | head -n1)
4601         # 4509: "This form of conditional instruction is deprecated"
4602         _flags="-nologo -ignore 4509"
4603         _flags_filter=armasm_flags
4604     elif $_cc 2>&1 | grep -q Intel; then
4605         _type=icl
4606         _ident=$($_cc 2>&1 | head -n1)
4607         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4608         # Not only is O3 broken on 13.x+ but it is slower on all previous
4609         # versions (tested) as well.
4610         _cflags_speed="-O2"
4611         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4612         if $_cc 2>&1 | grep -q Linker; then
4613             _ld_o='-out:$@'
4614         else
4615             _ld_o='-Fe$@'
4616         fi
4617         _cc_o='-Fo$@'
4618         _cc_e='-P'
4619         _flags_filter=icl_flags
4620         _ld_lib='lib%.a'
4621         _ld_path='-libpath:'
4622         # -Qdiag-error to make icl error when seeing certain unknown arguments
4623         _flags='-nologo -Qdiag-error:4044,10157'
4624         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4625         # with MSVC which enables it by default.
4626         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4627         disable stripping
4628     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4629         # lld can emulate multiple different linkers; in ms link.exe mode,
4630         # the -? parameter gives the help output which contains an identifyable
4631         # string, while it gives an error in other modes.
4632         _type=lld-link
4633         # The link.exe mode doesn't have a switch for getting the version,
4634         # but we can force it back to gnu mode and get the version from there.
4635         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4636         _ld_o='-out:$@'
4637         _flags_filter=msvc_flags
4638         _ld_lib='lib%.a'
4639         _ld_path='-libpath:'
4640     elif $_cc -nologo- 2>&1 | grep -q Microsoft || { $_cc -v 2>&1 | grep -q clang && $_cc -? > /dev/null 2>&1; }; then
4641         _type=msvc
4642         _ident=$($_cc 2>&1 | head -n1 | tr -d '\r')
4643         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4644         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4645         _cflags_speed="-O2"
4646         _cflags_size="-O1"
4647         _cflags_noopt="-O1"
4648         if $_cc -nologo- 2>&1 | grep -q Linker; then
4649             _ld_o='-out:$@'
4650         else
4651             _ld_o='-Fe$@'
4652         fi
4653         _cc_o='-Fo$@'
4654         _cc_e='-P -Fi$@'
4655         _flags_filter=msvc_flags
4656         _ld_lib='lib%.a'
4657         _ld_path='-libpath:'
4658         _flags='-nologo'
4659         disable stripping
4660     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4661         _type=cparser
4662         _ident=$($_cc --version | head -n1)
4663         _depflags='-MMD'
4664         _cflags_speed='-O4'
4665         _cflags_size='-O2'
4666         _flags_filter=cparser_flags
4667     fi
4668
4669     eval ${pfx}_type=\$_type
4670     eval ${pfx}_ident=\$_ident
4671 }
4672
4673 set_ccvars(){
4674     eval ${1}_C=\${_cc_c-\${${1}_C}}
4675     eval ${1}_E=\${_cc_e-\${${1}_E}}
4676     eval ${1}_O=\${_cc_o-\${${1}_O}}
4677
4678     if [ -n "$_depflags" ]; then
4679         eval ${1}_DEPFLAGS=\$_depflags
4680     else
4681         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4682         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4683         eval DEP${1}FLAGS=\$_flags
4684     fi
4685 }
4686
4687 probe_cc cc "$cc" "true"
4688 cflags_filter=$_flags_filter
4689 cflags_speed=$_cflags_speed
4690 cflags_size=$_cflags_size
4691 cflags_noopt=$_cflags_noopt
4692 add_cflags $_flags $_cflags
4693 cc_ldflags=$_ldflags
4694 set_ccvars CC
4695 set_ccvars CXX
4696
4697 probe_cc hostcc "$host_cc"
4698 host_cflags_filter=$_flags_filter
4699 host_cflags_speed=$_cflags_speed
4700 add_host_cflags  $_flags $_cflags
4701 set_ccvars HOSTCC
4702
4703 test -n "$cc_type" && enable $cc_type ||
4704     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4705
4706 : ${as_default:=$cc}
4707 : ${objcc_default:=$cc}
4708 : ${dep_cc_default:=$cc}
4709 : ${ld_default:=$cc}
4710 : ${host_ld_default:=$host_cc}
4711 set_default ar as objcc dep_cc ld ln_s host_ld windres
4712
4713 probe_cc as "$as"
4714 asflags_filter=$_flags_filter
4715 add_asflags $_flags $_cflags
4716 set_ccvars AS
4717
4718 probe_cc objcc "$objcc"
4719 objcflags_filter=$_flags_filter
4720 add_objcflags $_flags $_cflags
4721 set_ccvars OBJC
4722
4723 probe_cc ld "$ld"
4724 ldflags_filter=$_flags_filter
4725 add_ldflags $_flags $_ldflags
4726 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4727 LD_O=${_ld_o-$LD_O}
4728 LD_LIB=${_ld_lib-$LD_LIB}
4729 LD_PATH=${_ld_path-$LD_PATH}
4730
4731 probe_cc hostld "$host_ld"
4732 host_ldflags_filter=$_flags_filter
4733 add_host_ldflags $_flags $_ldflags
4734 HOSTLD_O=${_ld_o-$HOSTLD_O}
4735
4736 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4737     probe_cc depcc "$dep_cc"
4738     CCDEP=${_DEPCMD:-$DEPCMD}
4739     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4740     DEPCCFLAGS=$_flags
4741 fi
4742
4743 if $ar 2>&1 | grep -q Microsoft; then
4744     arflags="-nologo"
4745     ar_o='-out:$@'
4746 elif $ar 2>&1 | grep -q "\[D\] "; then
4747     arflags="rcD"
4748     ar_o='$@'
4749 else
4750     arflags="rc"
4751     ar_o='$@'
4752 fi
4753
4754 add_cflags $extra_cflags
4755 add_cxxflags $extra_cxxflags
4756 add_objcflags $extra_objcflags
4757 add_asflags $extra_cflags
4758
4759 if test -n "$sysroot"; then
4760     case "$cc_type" in
4761         gcc|llvm_gcc|clang)
4762             add_cppflags --sysroot="$sysroot"
4763             add_ldflags --sysroot="$sysroot"
4764         ;;
4765     esac
4766 fi
4767
4768 if test "$cpu" = host; then
4769     enabled cross_compile &&
4770         die "--cpu=host makes no sense when cross-compiling."
4771
4772     case "$cc_type" in
4773         gcc|llvm_gcc)
4774             check_native(){
4775                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4776                 sed -n "/cc1.*$1=/{
4777                             s/.*$1=\\([^ ]*\\).*/\\1/
4778                             p
4779                             q
4780                         }" $TMPE
4781             }
4782             cpu=$(check_native -march || check_native -mcpu)
4783         ;;
4784         clang)
4785             check_native(){
4786                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4787                 sed -n "/cc1.*-target-cpu /{
4788                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4789                             p
4790                             q
4791                         }" $TMPE
4792             }
4793             cpu=$(check_native -march)
4794         ;;
4795     esac
4796
4797     test "${cpu:-host}" = host &&
4798         die "--cpu=host not supported with compiler $cc"
4799 fi
4800
4801 # Deal with common $arch aliases
4802 case "$arch" in
4803     aarch64|arm64)
4804         arch="aarch64"
4805     ;;
4806     arm*|iPad*|iPhone*)
4807         arch="arm"
4808     ;;
4809     mips*|IP*)
4810         case "$arch" in
4811         *el)
4812             add_cppflags -EL
4813             add_ldflags -EL
4814         ;;
4815         *eb)
4816             add_cppflags -EB
4817             add_ldflags -EB
4818         ;;
4819         esac
4820         arch="mips"
4821     ;;
4822     parisc*|hppa*)
4823         arch="parisc"
4824     ;;
4825     "Power Macintosh"|ppc*|powerpc*)
4826         arch="ppc"
4827     ;;
4828     s390|s390x)
4829         arch="s390"
4830     ;;
4831     sh4|sh)
4832         arch="sh4"
4833     ;;
4834     sun4*|sparc*)
4835         arch="sparc"
4836     ;;
4837     tilegx|tile-gx)
4838         arch="tilegx"
4839     ;;
4840     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4841         arch="x86"
4842     ;;
4843 esac
4844
4845 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4846 enable $arch
4847
4848 # Add processor-specific flags
4849 if enabled aarch64; then
4850
4851     case $cpu in
4852         armv*)
4853             cpuflags="-march=$cpu"
4854         ;;
4855         *)
4856             cpuflags="-mcpu=$cpu"
4857         ;;
4858     esac
4859
4860 elif enabled alpha; then
4861
4862     cpuflags="-mcpu=$cpu"
4863
4864 elif enabled arm; then
4865
4866     check_arm_arch() {
4867         test_cpp_condition stddef.h \
4868             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4869             $cpuflags
4870     }
4871
4872     probe_arm_arch() {
4873         if   check_arm_arch 4;        then echo armv4
4874         elif check_arm_arch 4T;       then echo armv4t
4875         elif check_arm_arch 5;        then echo armv5
4876         elif check_arm_arch 5E;       then echo armv5e
4877         elif check_arm_arch 5T;       then echo armv5t
4878         elif check_arm_arch 5TE;      then echo armv5te
4879         elif check_arm_arch 5TEJ;     then echo armv5te
4880         elif check_arm_arch 6;        then echo armv6
4881         elif check_arm_arch 6J;       then echo armv6j
4882         elif check_arm_arch 6K;       then echo armv6k
4883         elif check_arm_arch 6Z;       then echo armv6z
4884         elif check_arm_arch 6KZ;      then echo armv6zk
4885         elif check_arm_arch 6ZK;      then echo armv6zk
4886         elif check_arm_arch 6T2;      then echo armv6t2
4887         elif check_arm_arch 7;        then echo armv7
4888         elif check_arm_arch 7A  7_A;  then echo armv7-a
4889         elif check_arm_arch 7S;       then echo armv7-a
4890         elif check_arm_arch 7R  7_R;  then echo armv7-r
4891         elif check_arm_arch 7M  7_M;  then echo armv7-m
4892         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4893         elif check_arm_arch 8A  8_A;  then echo armv8-a
4894         fi
4895     }
4896
4897     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4898
4899     case $cpu in
4900         armv*)
4901             cpuflags="-march=$cpu"
4902             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4903         ;;
4904         *)
4905             cpuflags="-mcpu=$cpu"
4906             case $cpu in
4907                 cortex-a*)                               subarch=armv7a  ;;
4908                 cortex-r*)                               subarch=armv7r  ;;
4909                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4910                 arm11*)                                  subarch=armv6   ;;
4911                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4912                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4913                 *)                             subarch=$(probe_arm_arch) ;;
4914             esac
4915         ;;
4916     esac
4917
4918     case "$subarch" in
4919         armv5t*)    enable fast_clz                ;;
4920         armv[6-8]*)
4921             enable fast_clz
4922             disabled fast_unaligned || enable fast_unaligned
4923             ;;
4924     esac
4925
4926 elif enabled avr32; then
4927
4928     case $cpu in
4929         ap7[02]0[0-2])
4930             subarch="avr32_ap"
4931             cpuflags="-mpart=$cpu"
4932         ;;
4933         ap)
4934             subarch="avr32_ap"
4935             cpuflags="-march=$cpu"
4936         ;;
4937         uc3[ab]*)
4938             subarch="avr32_uc"
4939             cpuflags="-mcpu=$cpu"
4940         ;;
4941         uc)
4942             subarch="avr32_uc"
4943             cpuflags="-march=$cpu"
4944         ;;
4945     esac
4946
4947 elif enabled bfin; then
4948
4949     cpuflags="-mcpu=$cpu"
4950
4951 elif enabled mips; then
4952
4953     cpuflags="-march=$cpu"
4954
4955     if [ "$cpu" != "generic" ]; then
4956         disable mips32r2
4957         disable mips32r5
4958         disable mips64r2
4959         disable mips32r6
4960         disable mips64r6
4961         disable loongson2
4962         disable loongson3
4963
4964         case $cpu in
4965             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4966                 enable mips32r2
4967                 disable msa
4968             ;;
4969             p5600|i6400|p6600)
4970                 disable mipsdsp
4971                 disable mipsdspr2
4972             ;;
4973             loongson*)
4974                 enable loongson2
4975                 enable loongson3
4976                 enable local_aligned
4977                 enable simd_align_16
4978                 enable fast_64bit
4979                 enable fast_clz
4980                 enable fast_cmov
4981                 enable fast_unaligned
4982                 disable aligned_stack
4983                 disable mipsdsp
4984                 disable mipsdspr2
4985                 # When gcc version less than 5.3.0, add -fno-expensive-optimizations flag.
4986                 if [ $cc == gcc ]; then
4987                     gcc_version=$(gcc -dumpversion)
4988                     if [ "$(echo "$gcc_version 5.3.0" | tr " " "\n" | sort -rV | head -n 1)" == "$gcc_version" ]; then
4989                         expensive_optimization_flag=""
4990                     else
4991                         expensive_optimization_flag="-fno-expensive-optimizations"
4992                     fi
4993                 fi
4994                 case $cpu in
4995                     loongson3*)
4996                         cpuflags="-march=loongson3a -mhard-float $expensive_optimization_flag"
4997                     ;;
4998                     loongson2e)
4999                         cpuflags="-march=loongson2e -mhard-float $expensive_optimization_flag"
5000                     ;;
5001                     loongson2f)
5002                         cpuflags="-march=loongson2f -mhard-float $expensive_optimization_flag"
5003                     ;;
5004                 esac
5005             ;;
5006             *)
5007                 # Unknown CPU. Disable everything.
5008                 warn "unknown CPU. Disabling all MIPS optimizations."
5009                 disable mipsfpu
5010                 disable mipsdsp
5011                 disable mipsdspr2
5012                 disable msa
5013                 disable mmi
5014             ;;
5015         esac
5016
5017         case $cpu in
5018             24kc)
5019                 disable mipsfpu
5020                 disable mipsdsp
5021                 disable mipsdspr2
5022             ;;
5023             24kf*)
5024                 disable mipsdsp
5025                 disable mipsdspr2
5026             ;;
5027             24kec|34kc|1004kc)
5028                 disable mipsfpu
5029                 disable mipsdspr2
5030             ;;
5031             24kef*|34kf*|1004kf*)
5032                 disable mipsdspr2
5033             ;;
5034             74kc)
5035                 disable mipsfpu
5036             ;;
5037             p5600)
5038                 enable mips32r5
5039                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
5040             ;;
5041             i6400)
5042                 enable mips64r6
5043                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
5044             ;;
5045             p6600)
5046                 enable mips64r6
5047                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
5048             ;;
5049         esac
5050     else
5051         # We do not disable anything. Is up to the user to disable the unwanted features.
5052         warn 'generic cpu selected'
5053     fi
5054
5055 elif enabled ppc; then
5056
5057     disable ldbrx
5058
5059     case $(tolower $cpu) in
5060         601|ppc601|powerpc601)
5061             cpuflags="-mcpu=601"
5062             disable altivec
5063         ;;
5064         603*|ppc603*|powerpc603*)
5065             cpuflags="-mcpu=603"
5066             disable altivec
5067         ;;
5068         604*|ppc604*|powerpc604*)
5069             cpuflags="-mcpu=604"
5070             disable altivec
5071         ;;
5072         g3|75*|ppc75*|powerpc75*)
5073             cpuflags="-mcpu=750"
5074             disable altivec
5075         ;;
5076         g4|745*|ppc745*|powerpc745*)
5077             cpuflags="-mcpu=7450"
5078             disable vsx
5079         ;;
5080         74*|ppc74*|powerpc74*)
5081             cpuflags="-mcpu=7400"
5082             disable vsx
5083         ;;
5084         g5|970|ppc970|powerpc970)
5085             cpuflags="-mcpu=970"
5086             disable vsx
5087         ;;
5088         power[3-6]*)
5089             cpuflags="-mcpu=$cpu"
5090             disable vsx
5091         ;;
5092         power[7-8]*)
5093             cpuflags="-mcpu=$cpu"
5094         ;;
5095         cell)
5096             cpuflags="-mcpu=cell"
5097             enable ldbrx
5098             disable vsx
5099         ;;
5100         e500mc)
5101             cpuflags="-mcpu=e500mc"
5102             disable altivec
5103         ;;
5104         e500v2)
5105             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
5106             disable altivec
5107             disable dcbzl
5108         ;;
5109         e500)
5110             cpuflags="-mcpu=8540 -mhard-float"
5111             disable altivec
5112             disable dcbzl
5113         ;;
5114     esac
5115
5116 elif enabled sparc; then
5117
5118     case $cpu in
5119         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
5120             cpuflags="-mcpu=$cpu"
5121         ;;
5122         ultrasparc*|niagara[234])
5123             cpuflags="-mcpu=$cpu"
5124         ;;
5125     esac
5126
5127 elif enabled x86; then
5128
5129     case $cpu in
5130         i[345]86|pentium)
5131             cpuflags="-march=$cpu"
5132             disable i686
5133             disable mmx
5134         ;;
5135         # targets that do NOT support nopl and conditional mov (cmov)
5136         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
5137             cpuflags="-march=$cpu"
5138             disable i686
5139         ;;
5140         # targets that do support nopl and conditional mov (cmov)
5141         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
5142         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
5143         |amdfam10|barcelona|b[dt]ver*|znver*)
5144             cpuflags="-march=$cpu"
5145             enable i686
5146             enable fast_cmov
5147         ;;
5148         # targets that do support conditional mov but on which it's slow
5149         pentium4|pentium4m|prescott|nocona)
5150             cpuflags="-march=$cpu"
5151             enable i686
5152             disable fast_cmov
5153         ;;
5154     esac
5155
5156 fi
5157
5158 if [ "$cpu" != generic ]; then
5159     add_cflags  $cpuflags
5160     add_asflags $cpuflags
5161     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
5162 fi
5163
5164 # compiler sanity check
5165 test_exec <<EOF
5166 int main(void){ return 0; }
5167 EOF
5168 if test "$?" != 0; then
5169     echo "$cc is unable to create an executable file."
5170     if test -z "$cross_prefix" && ! enabled cross_compile ; then
5171         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
5172         echo "Only do this if you know what cross compiling means."
5173     fi
5174     die "C compiler test failed."
5175 fi
5176
5177 add_cppflags -D_ISOC99_SOURCE
5178 add_cxxflags -D__STDC_CONSTANT_MACROS
5179 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
5180
5181 # some compilers silently accept -std=c11, so we also need to check that the
5182 # version macro is defined properly
5183 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
5184     add_cflags -std=c11 ||
5185     check_cflags -std=c99
5186
5187 check_cppflags -D_FILE_OFFSET_BITS=64
5188 check_cppflags -D_LARGEFILE_SOURCE
5189
5190 add_host_cppflags -D_ISOC99_SOURCE
5191 check_host_cflags -std=c99
5192 check_host_cflags -Wall
5193 check_host_cflags $host_cflags_speed
5194
5195 check_64bit(){
5196     arch32=$1
5197     arch64=$2
5198     expr=${3:-'sizeof(void *) > 4'}
5199     test_code cc "" "int test[2*($expr) - 1]" &&
5200         subarch=$arch64 || subarch=$arch32
5201     enable $subarch
5202 }
5203
5204 case "$arch" in
5205     aarch64|alpha|ia64)
5206         enabled shared && enable_weak pic
5207     ;;
5208     mips)
5209         check_64bit mips mips64 '_MIPS_SIM > 1'
5210         enabled shared && enable_weak pic
5211     ;;
5212     parisc)
5213         check_64bit parisc parisc64
5214         enabled shared && enable_weak pic
5215     ;;
5216     ppc)
5217         check_64bit ppc ppc64
5218         enabled shared && enable_weak pic
5219     ;;
5220     s390)
5221         check_64bit s390 s390x
5222         enabled shared && enable_weak pic
5223     ;;
5224     sparc)
5225         check_64bit sparc sparc64
5226         enabled shared && enable_weak pic
5227     ;;
5228     x86)
5229         check_64bit x86_32 x86_64
5230         # Treat x32 as x64 for now. Note it also needs pic if shared
5231         test "$subarch" = "x86_32" && test_cpp_condition stddef.h 'defined(__x86_64__)' &&
5232             subarch=x86_64 && enable x86_64 && disable x86_32
5233         if enabled x86_64; then
5234             enabled shared && enable_weak pic
5235             objformat=elf64
5236         fi
5237     ;;
5238 esac
5239
5240 # OS specific
5241 case $target_os in
5242     aix)
5243         SHFLAGS=-shared
5244         add_cppflags '-I\$(SRC_PATH)/compat/aix'
5245         enabled shared && add_ldflags -Wl,-brtl
5246         arflags='-Xany -r -c'
5247         striptype=""
5248         ;;
5249     android)
5250         disable symver
5251         enable section_data_rel_ro
5252         add_cflags -fPIE
5253         add_ldexeflags -fPIE -pie
5254         SLIB_INSTALL_NAME='$(SLIBNAME)'
5255         SLIB_INSTALL_LINKS=
5256         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
5257         ;;
5258     haiku)
5259         prefix_default="/boot/common"
5260         network_extralibs="-lnetwork"
5261         host_extralibs=
5262         ;;
5263     sunos)
5264         SHFLAGS='-shared -Wl,-h,$$(@F)'
5265         enabled x86 && append SHFLAGS -mimpure-text
5266         network_extralibs="-lsocket -lnsl"
5267         add_cppflags -D__EXTENSIONS__
5268         # When using suncc to build, the Solaris linker will mark
5269         # an executable with each instruction set encountered by
5270         # the Solaris assembler.  As our libraries contain their own
5271         # guards for processor-specific code, instead suppress
5272         # generation of the HWCAPS ELF section on Solaris x86 only.
5273         enabled_all suncc x86 &&
5274             echo "hwcap_1 = OVERRIDE;" > mapfile &&
5275             add_ldflags -Wl,-M,mapfile
5276         nm_default='nm -P -g'
5277         striptype=""
5278         version_script='-M'
5279         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
5280         ;;
5281     netbsd)
5282         disable symver
5283         oss_indev_extralibs="-lossaudio"
5284         oss_outdev_extralibs="-lossaudio"
5285         enabled gcc || check_ldflags -Wl,-zmuldefs
5286         ;;
5287     openbsd|bitrig)
5288         disable symver
5289         striptype=""
5290         SHFLAGS='-shared'
5291         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
5292         SLIB_INSTALL_LINKS=
5293         oss_indev_extralibs="-lossaudio"
5294         oss_outdev_extralibs="-lossaudio"
5295         ;;
5296     dragonfly)
5297         disable symver
5298         ;;
5299     freebsd)
5300         ;;
5301     bsd/os)
5302         add_extralibs -lpoll -lgnugetopt
5303         strip="strip -d"
5304         ;;
5305     darwin)
5306         enabled ppc && add_asflags -force_cpusubtype_ALL
5307         install_name_dir_default='$(SHLIBDIR)'
5308         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
5309         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
5310         strip="${strip} -x"
5311         add_ldflags -Wl,-dynamic,-search_paths_first
5312         check_cflags -Werror=partial-availability
5313         SLIBSUF=".dylib"
5314         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
5315         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
5316         enabled x86_64 && objformat="macho64" || objformat="macho32"
5317         enabled_any pic shared x86_64 ||
5318             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
5319         check_headers dispatch/dispatch.h &&
5320             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
5321         if test -n "$sysroot"; then
5322             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
5323             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
5324         fi
5325         version_script='-exported_symbols_list'
5326         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
5327         ;;
5328     msys*)
5329         die "Native MSYS builds are discouraged, please use the MINGW environment."
5330         ;;
5331     mingw32*|mingw64*)
5332         target_os=mingw32
5333         LIBTARGET=i386
5334         if enabled x86_64; then
5335             LIBTARGET="i386:x86-64"
5336         elif enabled arm; then
5337             LIBTARGET="arm"
5338         elif enabled aarch64; then
5339             LIBTARGET="arm64"
5340         fi
5341         if enabled shared; then
5342             # Cannot build both shared and static libs when using dllimport.
5343             disable static
5344         fi
5345         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5346         enabled x86_32 && check_ldflags -Wl,--large-address-aware
5347         shlibdir_default="$bindir_default"
5348         SLIBPREF=""
5349         SLIBSUF=".dll"
5350         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5351         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5352         if test_cmd lib.exe -list; then
5353             SLIB_EXTRA_CMD=-'lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5354             if enabled x86_64; then
5355                 LIBTARGET=x64
5356             fi
5357         else
5358             SLIB_EXTRA_CMD=-'$(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
5359         fi
5360         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5361         SLIB_INSTALL_LINKS=
5362         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5363         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5364         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5365         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--disable-auto-image-base $$(@:$(SLIBSUF)=.def)'
5366         enabled x86_64 && objformat="win64" || objformat="win32"
5367         dlltool="${cross_prefix}dlltool"
5368         ranlib=:
5369         enable dos_paths
5370         check_ldflags -Wl,--nxcompat,--dynamicbase
5371         # Lets work around some stupidity in binutils.
5372         # ld will strip relocations from executables even though we need them
5373         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
5374         # however ld then forgets what the entry point should be (oops) so we
5375         # have to manually (re)set it.
5376         if enabled x86_32; then
5377             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
5378         elif enabled x86_64; then
5379             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
5380             check_ldflags -Wl,--high-entropy-va # binutils 2.25
5381             # Set image base >4GB for extra entropy with HEASLR
5382             add_ldexeflags -Wl,--image-base,0x140000000
5383             append SHFLAGS -Wl,--image-base,0x180000000
5384         fi
5385         ;;
5386     win32|win64)
5387         disable symver
5388         if enabled shared; then
5389             # Link to the import library instead of the normal static library
5390             # for shared libs.
5391             LD_LIB='%.lib'
5392             # Cannot build both shared and static libs with MSVC or icl.
5393             disable static
5394         fi
5395         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
5396         shlibdir_default="$bindir_default"
5397         SLIBPREF=""
5398         SLIBSUF=".dll"
5399         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5400         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5401         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5402         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5403         SLIB_INSTALL_LINKS=
5404         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5405         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5406         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5407         enabled x86_64 && objformat="win64" || objformat="win32"
5408         ranlib=:
5409         enable dos_paths
5410         ;;
5411     cygwin*)
5412         target_os=cygwin
5413         shlibdir_default="$bindir_default"
5414         SLIBPREF="cyg"
5415         SLIBSUF=".dll"
5416         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5417         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5418         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5419         SLIB_INSTALL_LINKS=
5420         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5421         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5422         enabled x86_64 && objformat="win64" || objformat="win32"
5423         enable dos_paths
5424         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5425         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5426         ;;
5427     *-dos|freedos|opendos)
5428         network_extralibs="-lsocket"
5429         objformat="coff"
5430         enable dos_paths
5431         ;;
5432     linux)
5433         enable section_data_rel_ro
5434         enabled_any arm aarch64 && enable_weak linux_perf
5435         ;;
5436     irix*)
5437         target_os=irix
5438         ranlib="echo ignoring ranlib"
5439         ;;
5440     os/2*)
5441         strip="lxlite -CS"
5442         striptype=""
5443         objformat="aout"
5444         add_cppflags -D_GNU_SOURCE
5445         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5446         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5447         LIBSUF="_s.a"
5448         SLIBPREF=""
5449         SLIBSUF=".dll"
5450         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5451         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5452         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5453             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5454             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5455             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5456             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5457         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5458             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5459         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5460         SLIB_INSTALL_LINKS=
5461         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5462         enable dos_paths
5463         enable_weak os2threads
5464         ;;
5465     gnu/kfreebsd)
5466         add_cppflags -D_BSD_SOURCE
5467         ;;
5468     gnu)
5469         ;;
5470     qnx)
5471         add_cppflags -D_QNX_SOURCE
5472         network_extralibs="-lsocket"
5473         ;;
5474     symbian)
5475         SLIBSUF=".dll"
5476         enable dos_paths
5477         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5478         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5479         add_ldflags -Wl,--target1-abs,--no-undefined \
5480                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5481                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5482         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5483                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5484                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5485         ;;
5486     minix)
5487         ;;
5488     none)
5489         ;;
5490     *)
5491         die "Unknown OS '$target_os'."
5492         ;;
5493 esac
5494
5495 # test if creating links works
5496 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5497 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5498 mkdir "$link_dest"
5499 $ln_s "$link_dest" "$link_name"
5500 touch "$link_dest/test_file"
5501 if [ "$source_path" != "." ] && [ "$source_path" != "src" ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5502     # create link to source path
5503     [ -e src ] && rm src
5504     $ln_s "$source_path" src
5505     source_link=src
5506 else
5507     # creating directory links doesn't work
5508     # fall back to using the full source path
5509     source_link="$source_path"
5510 fi
5511 # cleanup
5512 rm -r "$link_dest"
5513 rm -r "$link_name"
5514
5515 # determine libc flavour
5516
5517 probe_libc(){
5518     pfx=$1
5519     pfx_no_=${pfx%_}
5520     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5521     if test_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5522         eval ${pfx}libc_type=uclibc
5523         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5524     elif test_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5525         eval ${pfx}libc_type=glibc
5526         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5527     # MinGW headers can be installed on Cygwin, so check for newlib first.
5528     elif test_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5529         eval ${pfx}libc_type=newlib
5530         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5531     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5532     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5533         eval ${pfx}libc_type=mingw64
5534         if test_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5535             add_compat msvcrt/snprintf.o
5536             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5537         fi
5538         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5539         eval test \$${pfx_no_}cc_type = "gcc" &&
5540             add_${pfx}cppflags -D__printf__=__gnu_printf__
5541         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5542             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5543         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5544     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5545          test_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5546         eval ${pfx}libc_type=mingw32
5547         test_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5548             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5549             die "ERROR: MinGW32 runtime version must be >= 3.15."
5550         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5551         test_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5552             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5553         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5554             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5555         eval test \$${pfx_no_}cc_type = "gcc" &&
5556             add_${pfx}cppflags -D__printf__=__gnu_printf__
5557         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5558     elif test_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5559         eval ${pfx}libc_type=msvcrt
5560         if test_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5561             if [ "$pfx" = host_ ]; then
5562                 add_host_cppflags -Dsnprintf=_snprintf
5563             else
5564                 add_compat strtod.o strtod=avpriv_strtod
5565                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5566                                              _snprintf=avpriv_snprintf  \
5567                                              vsnprintf=avpriv_vsnprintf
5568             fi
5569         fi
5570         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5571         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5572         # 0x601 by default unless something else is set by the user.
5573         # This can easily lead to us detecting functions only present
5574         # in such new versions and producing binaries requiring windows 7.0.
5575         # Therefore explicitly set the default to Vista unless the user has
5576         # set something else on the command line.
5577         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5578         # family. For these cases, configure is free to use any functions
5579         # found in the SDK headers by default. (Alternatively, we could force
5580         # _WIN32_WINNT to 0x0602 in that case.)
5581         test_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5582             { test_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0600; }
5583 #ifdef WINAPI_FAMILY
5584 #include <winapifamily.h>
5585 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5586 #error not desktop
5587 #endif
5588 #endif
5589 EOF
5590         if [ "$pfx" = "" ]; then
5591             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5592             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5593         fi
5594     elif test_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5595         eval ${pfx}libc_type=klibc
5596     elif test_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5597         eval ${pfx}libc_type=bionic
5598     elif test_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5599         eval ${pfx}libc_type=solaris
5600         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5601     elif test_${pfx}cpp_condition sys/version.h "defined __DJGPP__"; then
5602         eval ${pfx}libc_type=djgpp
5603         add_cppflags -U__STRICT_ANSI__
5604         add_cflags "-include $source_path/compat/djgpp/math.h"
5605         add_compat djgpp/math.o
5606     fi
5607     test_${pfx}cc <<EOF
5608 #include <time.h>
5609 void *v = localtime_r;
5610 EOF
5611 test "$?" != 0 && test_${pfx}cc -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 <<EOF && add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5612 #include <time.h>
5613 void *v = localtime_r;
5614 EOF
5615
5616     eval test -n "\${${pfx}libc_type}" && enable ${pfx}libc_${libc_type}
5617 }
5618
5619 probe_libc
5620 probe_libc host_
5621
5622 # hacks for compiler/libc/os combinations
5623
5624 case $libc_type in
5625     bionic)
5626         add_compat strtod.o strtod=avpriv_strtod
5627         ;;
5628 esac
5629
5630 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5631     add_cppflags '-I\$(SRC_PATH)/compat/float'
5632
5633 test_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5634
5635 set_default libdir
5636 : ${shlibdir_default:="$libdir"}
5637 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5638
5639 set_default $PATHS_LIST
5640 set_default nm
5641
5642 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5643
5644 enable_weak_pic() {
5645     disabled pic && return
5646     enable pic
5647     add_cppflags -DPIC
5648     case "$target_os" in
5649     mingw*|cygwin*|win*)
5650         ;;
5651     *)
5652         add_cflags -fPIC
5653         add_asflags -fPIC
5654         ;;
5655     esac
5656 }
5657
5658 enabled pic && enable_weak_pic
5659
5660 test_cc <<EOF || die "Symbol mangling check failed."
5661 int ff_extern;
5662 EOF
5663 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5664 extern_prefix=${sym%%ff_extern*}
5665
5666 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
5667
5668 for restrict_keyword in restrict __restrict__ __restrict ""; do
5669     test_code cc "" "char * $restrict_keyword p" && break
5670 done
5671
5672 check_cc pragma_deprecated "" '_Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"")'
5673
5674 # The global variable ensures the bits appear unchanged in the object file.
5675 test_cc <<EOF || die "endian test failed"
5676 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5677 EOF
5678 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5679
5680 check_cc const_nan math.h "struct { double d; } static const bar[] = { { NAN } }"
5681
5682 if ! enabled ppc64 || enabled bigendian; then
5683     disable vsx
5684 fi
5685
5686 check_gas() {
5687     log "check_gas using '$as' as AS"
5688     # :vararg is used on aarch64, arm and ppc altivec
5689     check_as vararg "
5690 .macro m n, y:vararg=0
5691 \n: .int \y
5692 .endm
5693 m x" || return 1
5694     # .altmacro is only used in arm asm
5695     ! enabled arm || check_as gnu_as ".altmacro"
5696 }
5697
5698 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5699     nogas=:
5700     enabled_any arm aarch64 && nogas=die
5701     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5702     as_noop=-v
5703
5704     case $as_type in
5705         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5706         gcc)  gaspp_as_type=gas ;;
5707         *)    gaspp_as_type=$as_type ;;
5708     esac
5709
5710     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5711
5712     test "${as#*gas-preprocessor.pl}" != "$as" ||
5713     test_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5714         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5715
5716     if ! check_gas ; then
5717         as=${gas:=$as}
5718         check_gas || \
5719             $nogas "GNU assembler not found, install/update gas-preprocessor"
5720     fi
5721
5722     check_as as_func ".func test
5723                       .endfunc"
5724 fi
5725
5726 check_inline_asm inline_asm_labels '"1:\n"'
5727
5728 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5729
5730 if enabled aarch64; then
5731     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5732     # internal assembler in clang 3.3 does not support this instruction
5733     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5734     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5735
5736     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5737
5738 elif enabled alpha; then
5739
5740     check_cflags -mieee
5741
5742 elif enabled arm; then
5743
5744     enabled msvc && check_cpp_condition thumb stddef.h "defined _M_ARMT"
5745     test_cpp_condition stddef.h "defined __thumb__" && test_cc <<EOF && enable_weak thumb
5746 float func(float a, float b){ return a+b; }
5747 EOF
5748     enabled thumb && check_cflags -mthumb || check_cflags -marm
5749
5750     if check_cpp_condition vfp_args stddef.h "defined __ARM_PCS_VFP"; then
5751         :
5752     elif check_cpp_condition vfp_args stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5753         :
5754     elif ! test_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5755         case "${cross_prefix:-$cc}" in
5756             *hardfloat*) enable vfp_args; fpabi=vfp ;;
5757             *) check_ld "cc" vfp_args <<EOF && fpabi=vfp || fpabi=soft ;;
5758 __asm__ (".eabi_attribute 28, 1");
5759 int main(void) { return 0; }
5760 EOF
5761         esac
5762         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5763     fi
5764
5765     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5766     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5767     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5768     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5769     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5770     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5771     enabled setend  && check_insn setend  'setend be'
5772
5773     [ $target_os = linux ] || [ $target_os = android ] ||
5774         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5775             $ARCH_EXT_LIST_ARM
5776
5777     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5778
5779     check_as as_arch_directive ".arch armv7-a"
5780     check_as as_dn_directive   "ra .dn d0.i16"
5781     check_as as_fpu_directive  ".fpu neon"
5782
5783     # llvm's integrated assembler supports .object_arch from llvm 3.5
5784     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5785         check_as as_object_arch ".object_arch armv4"
5786
5787     # MS armasm fails to assemble our PIC constructs
5788     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5789
5790 elif enabled mips; then
5791
5792     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5793     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5794     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5795
5796     # Enable minimum ISA based on selected options
5797     if enabled mips64; then
5798         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5799         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5800         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5801     else
5802         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5803         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5804         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5805         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5806     fi
5807
5808     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5809     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5810     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_headers msa.h || disable msa
5811     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5812     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5813     enabled msa && enabled msa2 && check_inline_asm_flags msa2 '"nxbits.any.b $w0, $w0"' '-mmsa2' && check_headers msa2.h || disable msa2
5814
5815     if enabled bigendian && enabled msa; then
5816         disable msa
5817     fi
5818
5819 elif enabled parisc; then
5820
5821     if enabled gcc; then
5822         case $($cc -dumpversion) in
5823             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5824         esac
5825     fi
5826
5827 elif enabled ppc; then
5828
5829     enable local_aligned
5830
5831     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5832     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5833     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5834     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5835
5836     if enabled altivec; then
5837         check_cflags -maltivec -mabi=altivec
5838
5839         # check if our compiler supports Motorola AltiVec C API
5840         check_cc altivec altivec.h "vector signed int v1 = (vector signed int) { 0 };
5841                                     vector signed int v2 = (vector signed int) { 1 };
5842                                     v1 = vec_add(v1, v2);"
5843
5844         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5845     fi
5846
5847     if enabled vsx; then
5848         check_cflags -mvsx &&
5849         check_cc vsx altivec.h "int v[4] = { 0 };
5850                                 vector signed int v1 = vec_vsx_ld(0, v);"
5851     fi
5852
5853     if enabled power8; then
5854         check_cpp_condition power8 "altivec.h" "defined(_ARCH_PWR8)"
5855     fi
5856
5857 elif enabled x86; then
5858
5859     check_builtin rdtsc    intrin.h   "__rdtsc()"
5860     check_builtin mm_empty mmintrin.h "_mm_empty()"
5861
5862     enable local_aligned
5863
5864     # check whether EBP is available on x86
5865     # As 'i' is stored on the stack, this program will crash
5866     # if the base pointer is used to access it because the
5867     # base pointer is cleared in the inline assembly code.
5868     check_exec_crash <<EOF && enable ebp_available
5869 volatile int i=0;
5870 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5871 return i;
5872 EOF
5873
5874     # check whether EBX is available on x86
5875     check_inline_asm ebx_available '""::"b"(0)' &&
5876         check_inline_asm ebx_available '"":::"%ebx"'
5877
5878     # check whether xmm clobbers are supported
5879     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5880
5881     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5882         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5883
5884     # check whether binutils is new enough to compile SSSE3/MMXEXT
5885     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5886     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5887
5888     probe_x86asm(){
5889         x86asmexe_probe=$1
5890         if test_cmd $x86asmexe_probe -v; then
5891             x86asmexe=$x86asmexe_probe
5892             x86asm_type=nasm
5893             x86asm_debug="-g -F dwarf"
5894             X86ASMDEP=
5895             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5896         elif test_cmd $x86asmexe_probe --version; then
5897             x86asmexe=$x86asmexe_probe
5898             x86asm_type=yasm
5899             x86asm_debug="-g dwarf2"
5900             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
5901             X86ASM_DEPFLAGS=
5902         fi
5903         check_x86asm x86asm "movbe ecx, [5]"
5904     }
5905
5906     if ! disabled_any asm mmx x86asm; then
5907         disable x86asm
5908         for program in $x86asmexe nasm yasm; do
5909             probe_x86asm $program && break
5910         done
5911         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
5912         X86ASMFLAGS="-f $objformat"
5913         enabled pic               && append X86ASMFLAGS "-DPIC"
5914         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
5915         case "$objformat" in
5916             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
5917         esac
5918
5919         check_x86asm avx512_external "vmovdqa32 [eax]{k1}{z}, zmm0"
5920         check_x86asm avx2_external   "vextracti128 xmm0, ymm0, 0"
5921         check_x86asm xop_external    "vpmacsdd xmm0, xmm1, xmm2, xmm3"
5922         check_x86asm fma4_external   "vfmaddps ymm0, ymm1, ymm2, ymm3"
5923         check_x86asm cpunop          "CPU amdnop"
5924     fi
5925
5926     case "$cpu" in
5927         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5928             disable fast_clz
5929         ;;
5930     esac
5931
5932 fi
5933
5934 check_cc intrinsics_neon arm_neon.h "int16x8_t test = vdupq_n_s16(0)"
5935
5936 check_ldflags -Wl,--as-needed
5937 check_ldflags -Wl,-z,noexecstack
5938
5939 if ! disabled network; then
5940     check_func getaddrinfo $network_extralibs
5941     check_func inet_aton $network_extralibs
5942
5943     check_type netdb.h "struct addrinfo"
5944     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5945     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5946     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5947     check_type poll.h "struct pollfd"
5948     check_type netinet/sctp.h "struct sctp_event_subscribe"
5949     check_struct "sys/socket.h" "struct msghdr" msg_flags
5950     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5951     check_type netinet/in.h "struct sockaddr_in6"
5952     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5953     check_type "sys/types.h sys/socket.h" socklen_t
5954
5955     # Prefer arpa/inet.h over winsock2
5956     if check_headers arpa/inet.h ; then
5957         check_func closesocket
5958     elif check_headers winsock2.h ; then
5959         check_func_headers winsock2.h closesocket -lws2 &&
5960             network_extralibs="-lws2" ||
5961         { check_func_headers winsock2.h closesocket -lws2_32 &&
5962             network_extralibs="-lws2_32"; } || disable winsock2_h network
5963         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5964
5965         check_type ws2tcpip.h socklen_t
5966         check_type ws2tcpip.h "struct addrinfo"
5967         check_type ws2tcpip.h "struct group_source_req"
5968         check_type ws2tcpip.h "struct ip_mreq_source"
5969         check_type ws2tcpip.h "struct ipv6_mreq"
5970         check_type winsock2.h "struct pollfd"
5971         check_struct winsock2.h "struct sockaddr" sa_len
5972         check_type ws2tcpip.h "struct sockaddr_in6"
5973         check_type ws2tcpip.h "struct sockaddr_storage"
5974     else
5975         disable network
5976     fi
5977 fi
5978
5979 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5980 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5981 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5982 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5983 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5984 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5985 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5986
5987 case "$custom_allocator" in
5988     jemalloc)
5989         # jemalloc by default does not use a prefix
5990         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5991     ;;
5992     tcmalloc)
5993         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
5994         malloc_prefix=tc_
5995     ;;
5996 esac
5997
5998 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5999 check_func  ${malloc_prefix}memalign            && enable memalign
6000 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
6001
6002 check_func  access
6003 check_func_headers stdlib.h arc4random
6004 check_lib   clock_gettime time.h clock_gettime || check_lib clock_gettime time.h clock_gettime -lrt
6005 check_func  fcntl
6006 check_func  fork
6007 check_func  gethrtime
6008 check_func  getopt
6009 check_func  getrusage
6010 check_func  gettimeofday
6011 check_func  isatty
6012 check_func  mkstemp
6013 check_func  mmap
6014 check_func  mprotect
6015 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
6016 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
6017 check_func  sched_getaffinity
6018 check_func  setrlimit
6019 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
6020 check_func  strerror_r
6021 check_func  sysconf
6022 check_func  sysctl
6023 check_func  usleep
6024
6025 check_func_headers conio.h kbhit
6026 check_func_headers io.h setmode
6027 check_func_headers lzo/lzo1x.h lzo1x_999_compress
6028 check_func_headers mach/mach_time.h mach_absolute_time
6029 check_func_headers stdlib.h getenv
6030 check_func_headers sys/stat.h lstat
6031
6032 check_func_headers windows.h GetProcessAffinityMask
6033 check_func_headers windows.h GetProcessTimes
6034 check_func_headers windows.h GetSystemTimeAsFileTime
6035 check_func_headers windows.h LoadLibrary
6036 check_func_headers windows.h MapViewOfFile
6037 check_func_headers windows.h PeekNamedPipe
6038 check_func_headers windows.h SetConsoleTextAttribute
6039 check_func_headers windows.h SetConsoleCtrlHandler
6040 check_func_headers windows.h Sleep
6041 check_func_headers windows.h VirtualAlloc
6042 check_func_headers glob.h glob
6043 enabled xlib &&
6044     check_lib xlib "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
6045
6046 check_headers direct.h
6047 check_headers dirent.h
6048 check_headers dxgidebug.h
6049 check_headers dxva.h
6050 check_headers dxva2api.h -D_WIN32_WINNT=0x0600
6051 check_headers io.h
6052 check_headers linux/perf_event.h
6053 check_headers libcrystalhd/libcrystalhd_if.h
6054 check_headers malloc.h
6055 check_headers net/udplite.h
6056 check_headers poll.h
6057 check_headers sys/param.h
6058 check_headers sys/resource.h
6059 check_headers sys/select.h
6060 check_headers sys/time.h
6061 check_headers sys/un.h
6062 check_headers termios.h
6063 check_headers unistd.h
6064 check_headers valgrind/valgrind.h
6065 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
6066 check_headers windows.h
6067 check_headers X11/extensions/XvMClib.h
6068 check_headers asm/types.h
6069
6070 # it seems there are versions of clang in some distros that try to use the
6071 # gcc headers, which explodes for stdatomic
6072 # so we also check that atomics actually work here
6073 check_builtin stdatomic stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0); foo += bar"
6074
6075 check_lib advapi32 "windows.h"            RegCloseKey          -ladvapi32
6076 check_lib bcrypt   "windows.h bcrypt.h"   BCryptGenRandom      -lbcrypt &&
6077     check_cpp_condition bcrypt bcrypt.h "defined BCRYPT_RNG_ALGORITHM"
6078 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
6079 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
6080 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
6081
6082 check_lib android android/native_window.h ANativeWindow_acquire -landroid
6083 check_lib mediandk "stdint.h media/NdkImage.h" AImage_delete -lmediandk
6084 check_lib camera2ndk "stdbool.h stdint.h camera/NdkCameraManager.h" ACameraManager_create -lcamera2ndk
6085
6086 enabled appkit       && check_apple_framework AppKit
6087 enabled audiotoolbox && check_apple_framework AudioToolbox
6088 enabled avfoundation && check_apple_framework AVFoundation
6089 enabled coreimage    && check_apple_framework CoreImage
6090 enabled videotoolbox && check_apple_framework VideoToolbox
6091
6092 check_apple_framework CoreFoundation
6093 check_apple_framework CoreMedia
6094 check_apple_framework CoreVideo
6095
6096 enabled avfoundation && {
6097     disable coregraphics applicationservices
6098     check_lib coregraphics        CoreGraphics/CoreGraphics.h               CGGetActiveDisplayList "-framework CoreGraphics" ||
6099     check_lib applicationservices ApplicationServices/ApplicationServices.h CGGetActiveDisplayList "-framework ApplicationServices"; }
6100
6101 enabled videotoolbox && {
6102     check_lib coreservices CoreServices/CoreServices.h UTGetOSTypeFromString "-framework CoreServices"
6103     check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_HEVC "-framework CoreMedia"
6104     check_func_headers CoreVideo/CVPixelBuffer.h kCVPixelFormatType_420YpCbCr10BiPlanarVideoRange "-framework CoreVideo"
6105     check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferTransferFunction_SMPTE_ST_2084_PQ "-framework CoreVideo"
6106     check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferTransferFunction_ITU_R_2100_HLG "-framework CoreVideo"
6107     check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferTransferFunction_Linear "-framework CoreVideo"
6108 }
6109
6110 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
6111
6112 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
6113 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
6114 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
6115 check_type "windows.h d3d11.h" "ID3D11VideoContext"
6116 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
6117
6118 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
6119 check_type "vdpau/vdpau.h" "VdpPictureInfoVP9"
6120
6121 if [ -z "$nvccflags" ]; then
6122     nvccflags=$nvccflags_default
6123 fi
6124
6125 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6126     nvccflags="$nvccflags -m64"
6127 else
6128     nvccflags="$nvccflags -m32"
6129 fi
6130
6131 if enabled cuda_nvcc; then
6132     nvccflags="$nvccflags -ptx"
6133 else
6134     nvccflags="$nvccflags -S -nocudalib -nocudainc --cuda-device-only -include ${source_link}/compat/cuda/cuda_runtime.h"
6135     check_nvcc cuda_llvm
6136 fi
6137
6138 if ! disabled ffnvcodec; then
6139     ffnv_hdr_list="ffnvcodec/nvEncodeAPI.h ffnvcodec/dynlink_cuda.h ffnvcodec/dynlink_cuviddec.h ffnvcodec/dynlink_nvcuvid.h"
6140     check_pkg_config ffnvcodec "ffnvcodec >= 9.0.18.0" "$ffnv_hdr_list" "" || \
6141       check_pkg_config ffnvcodec "ffnvcodec >= 8.2.15.8 ffnvcodec < 8.3" "$ffnv_hdr_list" "" || \
6142       check_pkg_config ffnvcodec "ffnvcodec >= 8.1.24.9 ffnvcodec < 8.2" "$ffnv_hdr_list" "" || \
6143       check_pkg_config ffnvcodec "ffnvcodec >= 8.0.14.9 ffnvcodec < 8.1" "$ffnv_hdr_list" ""
6144 fi
6145
6146 check_cpp_condition winrt windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)"
6147
6148 if ! disabled w32threads && ! enabled pthreads; then
6149     check_func_headers "windows.h process.h" _beginthreadex &&
6150         check_type "windows.h" CONDITION_VARIABLE &&
6151         check_type "windows.h" INIT_ONCE &&
6152         enable w32threads || disable w32threads
6153     if ! enabled w32threads && enabled winrt; then
6154         check_func_headers "windows.h" CreateThread &&
6155             enable w32threads || disable w32threads
6156     fi
6157 fi
6158
6159 # check for some common methods of building with pthread support
6160 # do this before the optional library checks as some of them require pthreads
6161 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
6162     if check_lib pthreads pthread.h pthread_join   -pthread &&
6163        check_lib pthreads pthread.h pthread_create -pthread; then
6164         add_cflags -pthread
6165     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
6166          check_lib pthreads pthread.h pthread_create -pthreads; then
6167         add_cflags -pthreads
6168     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
6169          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
6170         add_cflags -ldl -pthread
6171     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
6172          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
6173         :
6174     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
6175          check_lib pthreads pthread.h pthread_create -lpthread; then
6176         :
6177     elif check_func pthread_join && check_func pthread_create; then
6178         enable pthreads
6179     fi
6180     check_cc pthreads "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER"
6181
6182     if enabled pthreads; then
6183         check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
6184         check_func pthread_cancel $pthreads_extralibs
6185     fi
6186 fi
6187
6188 enabled  zlib && { check_pkg_config zlib zlib "zlib.h" zlibVersion ||
6189                    check_lib zlib   zlib.h      zlibVersion    -lz; }
6190 enabled bzlib && check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
6191 enabled  lzma && check_lib lzma   lzma.h lzma_version_number -llzma
6192
6193 # On some systems dynamic loading requires no extra linker flags
6194 check_lib libdl dlfcn.h "dlopen dlsym" || check_lib libdl dlfcn.h "dlopen dlsym" -ldl
6195
6196 check_lib libm math.h sin -lm
6197
6198 atan2f_args=2
6199 copysign_args=2
6200 hypot_args=2
6201 ldexpf_args=2
6202 powf_args=2
6203
6204 for func in $MATH_FUNCS; do
6205     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
6206 done
6207
6208 for func in $COMPLEX_FUNCS; do
6209     eval check_complexfunc $func \${${func}_args:-1}
6210 done
6211
6212 # these are off by default, so fail if requested and not available
6213 enabled cuda_nvcc         && { check_nvcc cuda_nvcc || die "ERROR: failed checking for nvcc."; }
6214 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
6215 enabled decklink          && { require_headers DeckLinkAPI.h &&
6216                                { test_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a090500" || die "ERROR: Decklink API version must be >= 10.9.5."; } }
6217 enabled frei0r            && require_headers "frei0r.h dlfcn.h"
6218 enabled gmp               && require gmp gmp.h mpz_export -lgmp
6219 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
6220 enabled jni               && { [ $target_os = "android" ] && check_headers jni.h && enabled pthreads || die "ERROR: jni not found"; }
6221 enabled ladspa            && require_headers "ladspa.h dlfcn.h"
6222 enabled libaom            && require_pkg_config libaom "aom >= 1.0.0" aom/aom_codec.h aom_codec_version
6223 enabled libaribb24        && { check_pkg_config libaribb24 "aribb24 > 1.0.3" "aribb24/aribb24.h" arib_instance_new ||
6224                                { enabled gpl && require_pkg_config libaribb24 aribb24 "aribb24/aribb24.h" arib_instance_new; } ||
6225                                die "ERROR: libaribb24 requires version higher than 1.0.3 or --enable-gpl."; }
6226 enabled lv2               && require_pkg_config lv2 lilv-0 "lilv/lilv.h" lilv_world_new
6227 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
6228 enabled libass            && require_pkg_config libass libass ass/ass.h ass_library_init
6229 enabled libbluray         && require_pkg_config libbluray libbluray libbluray/bluray.h bd_open
6230 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
6231 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
6232                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
6233                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
6234 enabled libcaca           && require_pkg_config libcaca caca caca.h caca_create_canvas
6235 enabled libcodec2         && require libcodec2 codec2/codec2.h codec2_create -lcodec2
6236 enabled libdav1d          && require_pkg_config libdav1d "dav1d >= 0.4.0" "dav1d/dav1d.h" dav1d_version
6237 enabled libdavs2          && require_pkg_config libdavs2 "davs2 >= 1.6.0" davs2.h davs2_decoder_open
6238 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
6239 enabled libdrm            && require_pkg_config libdrm libdrm xf86drm.h drmGetVersion
6240 enabled libfdk_aac        && { check_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
6241                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
6242                                  warn "using libfdk without pkg-config"; } }
6243 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"
6244 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
6245 enabled fontconfig        && enable libfontconfig
6246 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
6247 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
6248 enabled libfribidi        && require_pkg_config libfribidi fribidi fribidi.h fribidi_version_info
6249 enabled libgme            && { check_pkg_config libgme libgme gme/gme.h gme_new_emu ||
6250                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }
6251 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
6252                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
6253                                done || die "ERROR: libgsm not found"; }
6254 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc $pthreads_extralibs
6255 enabled libklvanc         && require libklvanc libklvanc/vanc.h klvanc_context_create -lklvanc
6256 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
6257 enabled liblensfun        && require_pkg_config liblensfun lensfun lensfun.h lf_db_new
6258 # While it may appear that require is being used as a pkg-config
6259 # fallback for libmfx, it is actually being used to detect a different
6260 # installation route altogether.  If libmfx is installed via the Intel
6261 # Media SDK or Intel Media Server Studio, these don't come with
6262 # pkg-config support.  Instead, users should make sure that the build
6263 # can find the libraries and headers through other means.
6264 enabled libmfx            && { check_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit ||
6265                                { require libmfx "mfx/mfxvideo.h" MFXInit "-llibmfx $advapi32_extralibs" && warn "using libmfx without pkg-config"; } }
6266 if enabled libmfx; then
6267    check_cc MFX_CODEC_VP9 "mfx/mfxvp9.h mfx/mfxstructures.h" "MFX_CODEC_VP9"
6268 fi
6269
6270 enabled libmodplug        && require_pkg_config libmodplug libmodplug libmodplug/modplug.h ModPlug_Load
6271 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame $libm_extralibs
6272 enabled libmysofa         && { check_pkg_config libmysofa libmysofa mysofa.h mysofa_neighborhood_init_withstepdefine ||
6273                                require libmysofa mysofa.h mysofa_neighborhood_init_withstepdefine -lmysofa $zlib_extralibs; }
6274 enabled libnpp            && { check_lib libnpp npp.h nppGetLibVersion -lnppig -lnppicc -lnppc -lnppidei ||
6275                                check_lib libnpp npp.h nppGetLibVersion -lnppi -lnppc -lnppidei ||
6276                                die "ERROR: libnpp not found"; }
6277 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
6278 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
6279 enabled libopencv         && { check_headers opencv2/core/core_c.h &&
6280                                { check_pkg_config libopencv opencv opencv2/core/core_c.h cvCreateImageHeader ||
6281                                  require libopencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
6282                                require_pkg_config libopencv opencv opencv/cxcore.h cvCreateImageHeader; }
6283 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
6284 enabled libopenjpeg       && { check_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version ||
6285                                { require_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } }
6286 enabled libopenmpt        && require_pkg_config libopenmpt "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create -lstdc++ && append libopenmpt_extralibs "-lstdc++"
6287 enabled libopus           && {
6288     enabled libopus_decoder && {
6289         require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
6290     }
6291     enabled libopus_encoder && {
6292         require_pkg_config libopus opus opus_multistream.h opus_multistream_surround_encoder_create
6293     }
6294 }
6295 enabled libpulse          && require_pkg_config libpulse libpulse pulse/pulseaudio.h pa_context_new
6296 enabled librav1e          && require_pkg_config librav1e "rav1e >= 0.1.0" rav1e.h rav1e_context_new
6297 enabled librsvg           && require_pkg_config librsvg librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
6298 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
6299 enabled librubberband     && require_pkg_config librubberband "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new -lstdc++ && append librubberband_extralibs "-lstdc++"
6300 enabled libshine          && require_pkg_config libshine shine shine/layer3.h shine_encode_buffer
6301 enabled libsmbclient      && { check_pkg_config libsmbclient smbclient libsmbclient.h smbc_init ||
6302                                require libsmbclient libsmbclient.h smbc_init -lsmbclient; }
6303 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy -lstdc++
6304 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
6305 enabled libssh            && require_pkg_config libssh libssh libssh/sftp.h sftp_init
6306 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init
6307 enabled libsrt            && require_pkg_config libsrt "srt >= 1.3.0" srt/srt.h srt_socket
6308 enabled libtensorflow     && require libtensorflow tensorflow/c/c_api.h TF_Version -ltensorflow
6309 enabled libtesseract      && require_pkg_config libtesseract tesseract tesseract/capi.h TessBaseAPICreate
6310 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
6311 enabled libtls            && require_pkg_config libtls libtls tls.h tls_configure
6312 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
6313                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
6314                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
6315 enabled libv4l2           && require_pkg_config libv4l2 libv4l2 libv4l2.h v4l2_ioctl
6316 enabled libvidstab        && require_pkg_config libvidstab "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
6317 enabled libvmaf           && require_pkg_config libvmaf "libvmaf >= 1.3.9" libvmaf.h compute_vmaf
6318 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
6319 enabled libvorbis         && require_pkg_config libvorbis vorbis vorbis/codec.h vorbis_info_init &&
6320                              require_pkg_config libvorbisenc vorbisenc vorbis/vorbisenc.h vorbis_encode_init
6321
6322 enabled libvpx            && {
6323     enabled libvpx_vp8_decoder && {
6324         check_pkg_config libvpx_vp8_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
6325             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"
6326     }
6327     enabled libvpx_vp8_encoder && {
6328         check_pkg_config libvpx_vp8_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
6329             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"
6330     }
6331     enabled libvpx_vp9_decoder && {
6332         check_pkg_config libvpx_vp9_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
6333             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"
6334     }
6335     enabled libvpx_vp9_encoder && {
6336         check_pkg_config libvpx_vp9_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
6337             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"
6338     }
6339     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
6340         die "libvpx enabled but no supported decoders found"
6341     fi
6342 }
6343
6344 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
6345 enabled libwebp           && {
6346     enabled libwebp_encoder      && require_pkg_config libwebp "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
6347     enabled libwebp_anim_encoder && check_pkg_config libwebp_anim_encoder "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit; }
6348 enabled libx264           && { check_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode ||
6349                                { require libx264 "stdint.h x264.h" x264_encoder_encode "-lx264 $pthreads_extralibs $libm_extralibs" &&
6350                                  warn "using libx264 without pkg-config"; } } &&
6351                              require_cpp_condition libx264 x264.h "X264_BUILD >= 118" &&
6352                              check_cpp_condition libx262 x264.h "X264_MPEG2"
6353 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
6354                              require_cpp_condition libx265 x265.h "X265_BUILD >= 68"
6355 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode "-lxavs $pthreads_extralibs $libm_extralibs"
6356 enabled libxavs2          && require_pkg_config libxavs2 "xavs2 >= 1.3.0" "stdint.h xavs2.h" xavs2_api_get
6357 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
6358 enabled libzimg           && require_pkg_config libzimg "zimg >= 2.7.0" zimg.h zimg_get_api_version
6359 enabled libzmq            && require_pkg_config libzmq "libzmq >= 4.2.1" zmq.h zmq_ctx_new
6360 enabled libzvbi           && require_pkg_config libzvbi zvbi-0.2 libzvbi.h vbi_decoder_new &&
6361                              { test_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
6362                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
6363 enabled libxml2           && require_pkg_config libxml2 libxml-2.0 libxml2/libxml/xmlversion.h xmlCheckVersion
6364 enabled mbedtls           && { check_pkg_config mbedtls mbedtls mbedtls/x509_crt.h mbedtls_x509_crt_init ||
6365                                check_pkg_config mbedtls mbedtls mbedtls/ssl.h mbedtls_ssl_init ||
6366                                check_lib mbedtls mbedtls/ssl.h mbedtls_ssl_init -lmbedtls -lmbedx509 -lmbedcrypto ||
6367                                die "ERROR: mbedTLS not found"; }
6368 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
6369 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
6370                                { ! enabled cross_compile &&
6371                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
6372                                  add_ldflags -L/opt/vc/lib/ &&
6373                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
6374                                die "ERROR: mmal not found" &&
6375                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
6376 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
6377                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
6378                                die "ERROR: openal not found"; } &&
6379                              { test_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
6380                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
6381 enabled opencl            && { check_pkg_config opencl OpenCL CL/cl.h clEnqueueNDRangeKernel ||
6382                                check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
6383                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
6384                                die "ERROR: opencl not found"; } &&
6385                              { test_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
6386                                test_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
6387                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
6388 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
6389                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
6390                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
6391                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
6392                                die "ERROR: opengl not found."
6393                              }
6394 enabled omx_rpi           && { test_code cc OMX_Core.h OMX_IndexConfigBrcmVideoRequestIFrame ||
6395                                { ! enabled cross_compile &&
6396                                  add_cflags -isystem/opt/vc/include/IL &&
6397                                  test_code cc OMX_Core.h OMX_IndexConfigBrcmVideoRequestIFrame; } ||
6398                                die "ERROR: OpenMAX IL headers from raspberrypi/firmware not found"; } &&
6399                              enable omx
6400 enabled omx               && require_headers OMX_Core.h
6401 enabled openssl           && { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
6402                                check_pkg_config openssl openssl openssl/ssl.h SSL_library_init ||
6403                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
6404                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
6405                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
6406                                die "ERROR: openssl not found"; }
6407 enabled pocketsphinx      && require_pkg_config pocketsphinx pocketsphinx pocketsphinx/pocketsphinx.h ps_init
6408 enabled rkmpp             && { require_pkg_config rkmpp rockchip_mpp  rockchip/rk_mpi.h mpp_create &&
6409                                require_pkg_config rockchip_mpp "rockchip_mpp >= 1.3.7" rockchip/rk_mpi.h mpp_create &&
6410                                { enabled libdrm ||
6411                                  die "ERROR: rkmpp requires --enable-libdrm"; }
6412                              }
6413 enabled vapoursynth       && require_pkg_config vapoursynth "vapoursynth-script >= 42" VSScript.h vsscript_init
6414
6415
6416 if enabled gcrypt; then
6417     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
6418     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
6419         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
6420         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
6421         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
6422             die "ERROR: gcrypt not found"
6423         add_cflags $gcrypt_cflags
6424     else
6425         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
6426     fi
6427 fi
6428
6429 if enabled sdl2; then
6430     SDL2_CONFIG="${cross_prefix}sdl2-config"
6431     test_pkg_config sdl2 "sdl2 >= 2.0.1 sdl2 < 2.1.0" SDL_events.h SDL_PollEvent
6432     if disabled sdl2 && "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6433         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6434         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6435         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6436         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6437         check_func_headers SDL_events.h SDL_PollEvent $sdl2_extralibs $sdl2_cflags &&
6438             enable sdl2
6439     fi
6440     if test $target_os = "mingw32"; then
6441         sdl2_extralibs=$(filter_out '-mwindows' $sdl2_extralibs)
6442     fi
6443 fi
6444
6445 if enabled decklink; then
6446     case $target_os in
6447         mingw32*|mingw64*|win32|win64)
6448             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6449             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6450             ;;
6451     esac
6452 fi
6453
6454 enabled securetransport &&
6455     check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6456     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" ||
6457         disable securetransport
6458
6459 enabled securetransport &&
6460     check_func SecItemImport "-Wl,-framework,CoreFoundation -Wl,-framework,Security"
6461
6462 enabled schannel &&
6463     check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6464     test_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" &&
6465     schannel_extralibs="-lsecur32" ||
6466         disable schannel
6467
6468 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6469 enabled makeinfo \
6470     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6471     && enable makeinfo_html || disable makeinfo_html
6472 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6473 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6474 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6475 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6476
6477 # check V4L2 codecs available in the API
6478 if enabled v4l2_m2m; then
6479     check_headers linux/fb.h
6480     check_headers linux/videodev2.h
6481     test_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6482     check_cc v4l2_m2m linux/videodev2.h "int i = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_VIDEO_M2M | V4L2_BUF_FLAG_LAST;"
6483     check_cc vc1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VC1_ANNEX_G;"
6484     check_cc mpeg1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG1;"
6485     check_cc mpeg2_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG2;"
6486     check_cc mpeg4_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG4;"
6487     check_cc hevc_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_HEVC;"
6488     check_cc h263_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H263;"
6489     check_cc h264_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H264;"
6490     check_cc vp8_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP8;"
6491     check_cc vp9_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP9;"
6492 fi
6493
6494 check_headers sys/videoio.h
6495 test_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6496
6497 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6498 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6499 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6500 # w32api 3.12 had it defined wrong
6501 check_cpp_condition vfwcap_defines vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER"
6502
6503 check_type "dshow.h" IBaseFilter
6504
6505 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6506 check_headers "dev/bktr/ioctl_meteor.h dev/bktr/ioctl_bt848.h"                   ||
6507     check_headers "machine/ioctl_meteor.h machine/ioctl_bt848.h"                 ||
6508     check_headers "dev/video/meteor/ioctl_meteor.h dev/video/bktr/ioctl_bt848.h" ||
6509     check_headers "dev/ic/bt8xx.h"
6510
6511 if check_struct sys/soundcard.h audio_buf_info bytes; then
6512     enable_sanitized sys/soundcard.h
6513 else
6514     test_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_sanitized sys/soundcard.h
6515     #include <sys/soundcard.h>
6516     audio_buf_info abc;
6517 EOF
6518 fi
6519
6520 enabled alsa && { check_pkg_config alsa alsa "alsa/asoundlib.h" snd_pcm_htimestamp ||
6521                   check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound; }
6522
6523 enabled libjack &&
6524     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
6525
6526 enabled sndio && check_lib sndio sndio.h sio_open -lsndio
6527
6528 if enabled libcdio; then
6529     check_pkg_config libcdio libcdio_paranoia "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open ||
6530     check_pkg_config libcdio libcdio_paranoia "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open ||
6531     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6532     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6533     die "ERROR: No usable libcdio/cdparanoia found"
6534 fi
6535
6536 enabled libxcb && check_pkg_config libxcb "xcb >= 1.4" xcb/xcb.h xcb_connect ||
6537     disable libxcb_shm libxcb_shape libxcb_xfixes
6538
6539 if enabled libxcb; then
6540     enabled libxcb_shm    && check_pkg_config libxcb_shm    xcb-shm    xcb/shm.h    xcb_shm_attach
6541     enabled libxcb_shape  && check_pkg_config libxcb_shape  xcb-shape  xcb/shape.h  xcb_shape_get_rectangles
6542     enabled libxcb_xfixes && check_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
6543 fi
6544
6545 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6546
6547 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6548 # the desktop api partition
6549 test_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
6550 #ifdef WINAPI_FAMILY
6551 #include <winapifamily.h>
6552 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
6553 #error desktop, not uwp
6554 #else
6555 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
6556 #endif
6557 #else
6558 #error no family set
6559 #endif
6560 EOF
6561
6562 enabled vaapi &&
6563     check_pkg_config vaapi "libva >= 0.35.0" "va/va.h" vaInitialize
6564
6565 if enabled vaapi; then
6566     check_pkg_config vaapi_drm "libva-drm" "va/va_drm.h" vaGetDisplayDRM
6567
6568     if enabled xlib; then
6569         check_pkg_config vaapi_x11 "libva-x11" "va/va_x11.h" vaGetDisplay
6570     fi
6571
6572     check_cpp_condition vaapi_1 "va/va.h" "VA_CHECK_VERSION(1, 0, 0)"
6573
6574     check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
6575     check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
6576     check_struct "va/va.h va/va_vpp.h" "VAProcPipelineCaps" rotation_flags
6577     check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
6578     check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
6579     check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
6580     check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
6581 fi
6582
6583 if enabled_all opencl libdrm ; then
6584     check_type "CL/cl_intel.h" "clCreateImageFromFdINTEL_fn" &&
6585         enable opencl_drm_beignet
6586     check_func_headers "CL/cl_ext.h" clImportMemoryARM &&
6587         enable opencl_drm_arm
6588 fi
6589
6590 if enabled_all opencl vaapi ; then
6591     if enabled opencl_drm_beignet ; then
6592         enable opencl_vaapi_beignet
6593     else
6594         check_type "CL/cl.h CL/cl_va_api_media_sharing_intel.h" "clCreateFromVA_APIMediaSurfaceINTEL_fn" &&
6595             enable opencl_vaapi_intel_media
6596     fi
6597 fi
6598
6599 if enabled_all opencl dxva2 ; then
6600     check_type "CL/cl_dx9_media_sharing.h" cl_dx9_surface_info_khr &&
6601         enable opencl_dxva2
6602 fi
6603
6604 if enabled_all opencl d3d11va ; then
6605     check_type "CL/cl_d3d11.h" clGetDeviceIDsFromD3D11KHR_fn &&
6606         enable opencl_d3d11
6607 fi
6608
6609 enabled vdpau &&
6610     check_cpp_condition vdpau vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP"
6611
6612 enabled vdpau &&
6613     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6614
6615 enabled crystalhd && check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
6616
6617 if enabled x86; then
6618     case $target_os in
6619         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6620             ;;
6621         *)
6622             disable ffnvcodec cuvid nvdec nvenc
6623             ;;
6624     esac
6625 elif enabled ppc64 && ! enabled bigendian; then
6626     case $target_os in
6627         linux)
6628             ;;
6629         *)
6630             disable ffnvcodec cuvid nvdec nvenc
6631             ;;
6632     esac
6633 else
6634     disable ffnvcodec cuvid nvdec nvenc
6635 fi
6636
6637 enabled ffnvcodec && enable cuda
6638
6639 enabled nvenc &&
6640     test_cc -I$source_path <<EOF || disable nvenc
6641 #include <ffnvcodec/nvEncodeAPI.h>
6642 NV_ENCODE_API_FUNCTION_LIST flist;
6643 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6644 int main(void) { return 0; }
6645 EOF
6646
6647 enabled amf &&
6648     check_cpp_condition amf "AMF/core/Version.h" \
6649         "(AMF_VERSION_MAJOR << 48 | AMF_VERSION_MINOR << 32 | AMF_VERSION_RELEASE << 16 | AMF_VERSION_BUILD_NUM) >= 0x0001000400090000"
6650
6651 # Funny iconv installations are not unusual, so check it after all flags have been set
6652 if enabled libc_iconv; then
6653     check_func_headers iconv.h iconv
6654 elif enabled iconv; then
6655     check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6656 fi
6657
6658 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6659
6660 # add some useful compiler flags if supported
6661 check_cflags -Wdeclaration-after-statement
6662 check_cflags -Wall
6663 check_cflags -Wdisabled-optimization
6664 check_cflags -Wpointer-arith
6665 check_cflags -Wredundant-decls
6666 check_cflags -Wwrite-strings
6667 check_cflags -Wtype-limits
6668 check_cflags -Wundef
6669 check_cflags -Wmissing-prototypes
6670 check_cflags -Wno-pointer-to-int-cast
6671 check_cflags -Wstrict-prototypes
6672 check_cflags -Wempty-body
6673
6674 if enabled extra_warnings; then
6675     check_cflags -Wcast-qual
6676     check_cflags -Wextra
6677     check_cflags -Wpedantic
6678 fi
6679
6680 check_disable_warning(){
6681     warning_flag=-W${1#-Wno-}
6682     test_cflags $unknown_warning_flags $warning_flag && add_cflags $1
6683 }
6684
6685 test_cflags -Werror=unused-command-line-argument &&
6686     append unknown_warning_flags "-Werror=unused-command-line-argument"
6687 test_cflags -Werror=unknown-warning-option &&
6688     append unknown_warning_flags "-Werror=unknown-warning-option"
6689
6690 check_disable_warning -Wno-parentheses
6691 check_disable_warning -Wno-switch
6692 check_disable_warning -Wno-format-zero-length
6693 check_disable_warning -Wno-pointer-sign
6694 check_disable_warning -Wno-unused-const-variable
6695 check_disable_warning -Wno-bool-operation
6696 check_disable_warning -Wno-char-subscripts
6697
6698 check_disable_warning_headers(){
6699     warning_flag=-W${1#-Wno-}
6700     test_cflags $warning_flag && add_cflags_headers $1
6701 }
6702
6703 check_disable_warning_headers -Wno-deprecated-declarations
6704 check_disable_warning_headers -Wno-unused-variable
6705
6706 test_cc <<EOF && enable blocks_extension
6707 void (^block)(void);
6708 EOF
6709
6710 # add some linker flags
6711 check_ldflags -Wl,--warn-common
6712 check_ldflags -Wl,-rpath-link=:libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6713 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir && add_ldsoflags -Wl,-rpath,$libdir
6714 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6715
6716 # add some strip flags
6717 check_stripflags -x
6718
6719 enabled neon_clobber_test &&
6720     check_ldflags -Wl,--wrap,avcodec_open2              \
6721                   -Wl,--wrap,avcodec_decode_audio4      \
6722                   -Wl,--wrap,avcodec_decode_video2      \
6723                   -Wl,--wrap,avcodec_decode_subtitle2   \
6724                   -Wl,--wrap,avcodec_encode_audio2      \
6725                   -Wl,--wrap,avcodec_encode_video2      \
6726                   -Wl,--wrap,avcodec_encode_subtitle    \
6727                   -Wl,--wrap,avcodec_send_packet        \
6728                   -Wl,--wrap,avcodec_receive_packet     \
6729                   -Wl,--wrap,avcodec_send_frame         \
6730                   -Wl,--wrap,avcodec_receive_frame      \
6731                   -Wl,--wrap,swr_convert                \
6732                   -Wl,--wrap,avresample_convert ||
6733     disable neon_clobber_test
6734
6735 enabled xmm_clobber_test &&
6736     check_ldflags -Wl,--wrap,avcodec_open2              \
6737                   -Wl,--wrap,avcodec_decode_audio4      \
6738                   -Wl,--wrap,avcodec_decode_video2      \
6739                   -Wl,--wrap,avcodec_decode_subtitle2   \
6740                   -Wl,--wrap,avcodec_encode_audio2      \
6741                   -Wl,--wrap,avcodec_encode_video2      \
6742                   -Wl,--wrap,avcodec_encode_subtitle    \
6743                   -Wl,--wrap,avcodec_send_packet        \
6744                   -Wl,--wrap,avcodec_receive_packet     \
6745                   -Wl,--wrap,avcodec_send_frame         \
6746                   -Wl,--wrap,avcodec_receive_frame      \
6747                   -Wl,--wrap,swr_convert                \
6748                   -Wl,--wrap,avresample_convert         \
6749                   -Wl,--wrap,sws_scale ||
6750     disable xmm_clobber_test
6751
6752 check_ld "cc" proper_dce <<EOF
6753 extern const int array[512];
6754 static inline int func(void) { return array[0]; }
6755 int main(void) { return 0; }
6756 EOF
6757
6758 if enabled proper_dce; then
6759     echo "X { local: *; };" > $TMPV
6760     if test_ldflags -Wl,${version_script},$TMPV; then
6761         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6762         quotes='""'
6763         test_cc <<EOF && enable symver_asm_label
6764 void ff_foo(void) __asm__ ("av_foo@VERSION");
6765 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6766 EOF
6767         test_cc <<EOF && enable symver_gnu_asm
6768 __asm__(".symver ff_foo,av_foo@VERSION");
6769 void ff_foo(void) {}
6770 EOF
6771     fi
6772 fi
6773
6774 if [ -z "$optflags" ]; then
6775     if enabled small; then
6776         optflags=$cflags_size
6777     elif enabled optimizations; then
6778         optflags=$cflags_speed
6779     else
6780         optflags=$cflags_noopt
6781     fi
6782 fi
6783
6784 check_optflags(){
6785     check_cflags "$@"
6786     enabled lto && check_ldflags "$@"
6787 }
6788
6789 check_optflags $optflags
6790 check_optflags -fno-math-errno
6791 check_optflags -fno-signed-zeros
6792
6793 if enabled lto; then
6794     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6795     check_cflags  -flto
6796     check_ldflags -flto $cpuflags
6797     disable inline_asm_direct_symbol_refs
6798 fi
6799
6800 enabled ftrapv && check_cflags -ftrapv
6801
6802 test_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6803 int x;
6804 EOF
6805
6806
6807 if enabled icc; then
6808     # Just warnings, no remarks
6809     check_cflags -w1
6810     # -wd: Disable following warnings
6811     # 144, 167, 556: -Wno-pointer-sign
6812     # 188: enumerated type mixed with another type
6813     # 1292: attribute "foo" ignored
6814     # 1419: external declaration in primary source file
6815     # 10006: ignoring unknown option -fno-signed-zeros
6816     # 10148: ignoring unknown option -Wno-parentheses
6817     # 10156: ignoring option '-W'; no argument required
6818     # 13200: No EMMS instruction before call to function
6819     # 13203: No EMMS instruction before return from function
6820     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6821     # 11030: Warning unknown option --as-needed
6822     # 10156: ignoring option '-export'; no argument required
6823     check_ldflags -wd10156,11030
6824     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6825     enable ebp_available
6826     # The test above does not test linking
6827     enabled lto && disable symver_asm_label
6828     if enabled x86_32; then
6829         icc_version=$($cc -dumpversion)
6830         test ${icc_version%%.*} -ge 11 &&
6831             check_cflags -falign-stack=maintain-16-byte ||
6832             disable aligned_stack
6833     fi
6834 elif enabled gcc; then
6835     check_optflags -fno-tree-vectorize
6836     check_cflags -Werror=format-security
6837     check_cflags -Werror=implicit-function-declaration
6838     check_cflags -Werror=missing-prototypes
6839     check_cflags -Werror=return-type
6840     check_cflags -Werror=vla
6841     check_cflags -Wformat
6842     check_cflags -fdiagnostics-color=auto
6843     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6844     if enabled x86_32; then
6845         case $target_os in
6846         *bsd*)
6847             # BSDs don't guarantee a 16 byte aligned stack, but we can
6848             # request GCC to try to maintain 16 byte alignment throughout
6849             # function calls. Library entry points that might call assembly
6850             # functions align the stack. (The parameter means 2^4 bytes.)
6851             check_cflags -mpreferred-stack-boundary=4
6852             ;;
6853         esac
6854     fi
6855 elif enabled llvm_gcc; then
6856     check_cflags -mllvm -stack-alignment=16
6857 elif enabled clang; then
6858     if enabled x86_32; then
6859         # Clang doesn't support maintaining alignment without assuming the
6860         # same alignment in every function. If 16 byte alignment would be
6861         # enabled, one would also have to either add attribute_align_arg on
6862         # every single entry point into the libraries or enable -mstackrealign
6863         # (doing stack realignment in every single function).
6864         case $target_os in
6865         mingw32|win32|*bsd*)
6866             disable aligned_stack
6867             ;;
6868         *)
6869             check_cflags -mllvm -stack-alignment=16
6870             check_cflags -mstack-alignment=16
6871             ;;
6872         esac
6873     else
6874         check_cflags -mllvm -stack-alignment=16
6875         check_cflags -mstack-alignment=16
6876     fi
6877     check_cflags -Qunused-arguments
6878     check_cflags -Werror=implicit-function-declaration
6879     check_cflags -Werror=missing-prototypes
6880     check_cflags -Werror=return-type
6881 elif enabled cparser; then
6882     add_cflags -Wno-missing-variable-declarations
6883     add_cflags -Wno-empty-statement
6884 elif enabled armcc; then
6885     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6886     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6887     # 2523: use of inline assembly is deprecated
6888     add_cflags -W${armcc_opt},--diag_suppress=2523
6889     add_cflags -W${armcc_opt},--diag_suppress=1207
6890     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6891     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6892     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6893     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6894 elif enabled pathscale; then
6895     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6896     disable inline_asm
6897 elif enabled_any msvc icl; then
6898     enabled x86_32 && disable aligned_stack
6899     enabled_all x86_32 debug && add_cflags -Oy-
6900     enabled debug && add_ldflags -debug
6901     enable pragma_deprecated
6902     if enabled icl; then
6903         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6904         # (correctly) on icl 13.x.
6905         test_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6906             add_cflags -Qansi-alias
6907         # Some inline asm is not compilable in debug
6908         if enabled debug; then
6909             disable ebp_available
6910             disable ebx_available
6911         fi
6912     fi
6913     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6914     check_cpp_condition log2 crtversion.h "_VC_CRT_MAJOR_VERSION >= 12"
6915     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6916     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6917     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6918     # MSVC 2013 and newer can handle it fine.
6919     # If this declspec fails, force including stdlib.h before the restrict redefinition
6920     # happens in config.h.
6921     if [ $restrict_keyword != restrict ]; then
6922         test_cc <<EOF || add_cflags -FIstdlib.h
6923 __declspec($restrict_keyword) void *foo(int);
6924 EOF
6925     fi
6926     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6927     # Issue has been fixed in MSVC v19.00.24218.
6928     test_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6929         check_cflags -d2SSAOptimizer-
6930     # enable utf-8 source processing on VS2015 U2 and newer
6931     test_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6932         add_cflags -utf-8
6933 fi
6934
6935 for pfx in "" host_; do
6936     varname=${pfx%_}cc_type
6937     eval "type=\$$varname"
6938     if [ "$type" = "msvc" ]; then
6939         test_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6940 static inline int foo(int a) { return a; }
6941 EOF
6942     fi
6943 done
6944
6945 case $as_type in
6946     clang)
6947         add_asflags -Qunused-arguments
6948     ;;
6949 esac
6950
6951 case $ld_type in
6952     clang)
6953         check_ldflags -Qunused-arguments
6954     ;;
6955 esac
6956
6957 enable frame_thread_encoder
6958
6959 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6960
6961 check_deps $CONFIG_LIST       \
6962            $CONFIG_EXTRA      \
6963            $HAVE_LIST         \
6964            $ALL_COMPONENTS    \
6965
6966 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"
6967 enabled avresample && warn "Building with deprecated library libavresample"
6968
6969 case $target_os in
6970 haiku)
6971     disable memalign
6972     disable posix_memalign
6973     ;;
6974 *-dos|freedos|opendos)
6975     if test_cpp_condition sys/version.h "defined(__DJGPP__) && __DJGPP__ == 2 && __DJGPP_MINOR__ == 5"; then
6976         disable memalign
6977     fi
6978     ;;
6979 esac
6980
6981 flatten_extralibs(){
6982     nested_entries=
6983     list_name=$1
6984     eval list=\$${1}
6985     for entry in $list; do
6986         entry_copy=$entry
6987         resolve entry_copy
6988         flat_entries=
6989         for e in $entry_copy; do
6990             case $e in
6991                 *_extralibs) nested_entries="$nested_entries$e ";;
6992                           *) flat_entries="$flat_entries$e ";;
6993             esac
6994         done
6995         eval $entry="\$flat_entries"
6996     done
6997     append $list_name "$nested_entries"
6998
6999     resolve nested_entries
7000     if test -n "$(filter '*_extralibs' $nested_entries)"; then
7001         flatten_extralibs $list_name
7002     fi
7003 }
7004
7005 flatten_extralibs_wrapper(){
7006     list_name=$1
7007     flatten_extralibs $list_name
7008     unique $list_name
7009     resolve $list_name
7010     eval $list_name=\$\(\$ldflags_filter \$$list_name\)
7011     eval printf \''%s'\' \""\$$list_name"\"
7012 }
7013
7014 for linkunit in $LIBRARY_LIST; do
7015     unset current_extralibs
7016     eval components=\$$(toupper ${linkunit})_COMPONENTS_LIST
7017     for comp in ${components}; do
7018         enabled $comp || continue
7019         comp_extralibs="${comp}_extralibs"
7020         append current_extralibs $comp_extralibs
7021     done
7022     eval prepend ${linkunit}_extralibs $current_extralibs
7023 done
7024
7025 for linkunit in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
7026     eval ${linkunit}_extralibs=\$\(flatten_extralibs_wrapper ${linkunit}_extralibs\)
7027 done
7028
7029 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
7030
7031 for thread in $THREADS_LIST; do
7032     if enabled $thread; then
7033         test -n "$thread_type" &&
7034             die "ERROR: Only one thread type must be selected." ||
7035             thread_type="$thread"
7036     fi
7037 done
7038
7039 if disabled stdatomic; then
7040     if enabled atomics_gcc; then
7041         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
7042     elif enabled atomics_win32; then
7043         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
7044     elif enabled atomics_suncc; then
7045         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
7046     elif enabled pthreads; then
7047         add_compat atomics/pthread/stdatomic.o
7048         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
7049     else
7050         enabled threads && die "Threading is enabled, but no atomics are available"
7051         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
7052     fi
7053 fi
7054
7055 # Check if requested libraries were found.
7056 for lib in $AUTODETECT_LIBS; do
7057     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
7058 done
7059
7060 enabled zlib && add_cppflags -DZLIB_CONST
7061
7062 # conditional library dependencies, in any order
7063 enabled afftdn_filter       && prepend avfilter_deps "avcodec"
7064 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
7065 enabled afir_filter         && prepend avfilter_deps "avcodec"
7066 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
7067 enabled aresample_filter    && prepend avfilter_deps "swresample"
7068 enabled atempo_filter       && prepend avfilter_deps "avcodec"
7069 enabled bm3d_filter         && prepend avfilter_deps "avcodec"
7070 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
7071 enabled convolve_filter     && prepend avfilter_deps "avcodec"
7072 enabled deconvolve_filter   && prepend avfilter_deps "avcodec"
7073 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
7074 enabled elbg_filter         && prepend avfilter_deps "avcodec"
7075 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
7076 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
7077 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
7078 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
7079 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
7080 enabled pan_filter          && prepend avfilter_deps "swresample"
7081 enabled pp_filter           && prepend avfilter_deps "postproc"
7082 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
7083 enabled resample_filter && prepend avfilter_deps "avresample"
7084 enabled sab_filter          && prepend avfilter_deps "swscale"
7085 enabled scale_filter    && prepend avfilter_deps "swscale"
7086 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
7087 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
7088 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
7089 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
7090 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
7091 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
7092 enabled smartblur_filter    && prepend avfilter_deps "swscale"
7093 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
7094 enabled spp_filter          && prepend avfilter_deps "avcodec"
7095 enabled sr_filter           && prepend avfilter_deps "avformat swscale"
7096 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
7097 enabled uspp_filter         && prepend avfilter_deps "avcodec"
7098 enabled zoompan_filter      && prepend avfilter_deps "swscale"
7099
7100 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
7101
7102 #FIXME
7103 enabled_any sdl2_outdev opengl_outdev && enabled sdl2 &&
7104     add_cflags $(filter_out '-Dmain=SDL_main' $sdl2_cflags)
7105
7106 enabled opus_decoder    && prepend avcodec_deps "swresample"
7107
7108 # reorder the items at var $1 to align with the items order at var $2 .
7109 # die if an item at $1 is not at $2 .
7110 reorder_by(){
7111     eval rb_in=\$$1
7112     eval rb_ordered=\$$2
7113
7114     for rb in $rb_in; do
7115         is_in $rb $rb_ordered || die "$rb at \$$1 is not at \$$2"
7116     done
7117
7118     rb_out=
7119     for rb in $rb_ordered; do
7120         is_in $rb $rb_in && rb_out="$rb_out$rb "
7121     done
7122     eval $1=\$rb_out
7123 }
7124
7125 # deps-expand fflib $1:  N x {append all expanded deps; unique}
7126 # within a set of N items, N expansions are enough to expose a cycle.
7127 expand_deps(){
7128     unique ${1}_deps  # required for the early break test.
7129     for dummy in $LIBRARY_LIST; do  # N iteratios
7130         eval deps=\$${1}_deps
7131         append ${1}_deps $(map 'eval echo \$${v}_deps' $deps)
7132         unique ${1}_deps
7133         eval '[ ${#deps} = ${#'${1}_deps'} ]' && break  # doesn't expand anymore
7134     done
7135
7136     eval is_in $1 \$${1}_deps && die "Dependency cycle at ${1}_deps"
7137     reorder_by ${1}_deps LIBRARY_LIST  # linking order is expected later
7138 }
7139
7140 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
7141 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
7142
7143 map 'expand_deps $v' $LIBRARY_LIST
7144
7145 if test "$quiet" != "yes"; then
7146
7147 echo "install prefix            $prefix"
7148 echo "source path               $source_path"
7149 echo "C compiler                $cc"
7150 echo "C library                 $libc_type"
7151 if test "$host_cc" != "$cc"; then
7152     echo "host C compiler           $host_cc"
7153     echo "host C library            $host_libc_type"
7154 fi
7155 echo "ARCH                      $arch ($cpu)"
7156 if test "$build_suffix" != ""; then
7157     echo "build suffix              $build_suffix"
7158 fi
7159 if test "$progs_suffix" != ""; then
7160     echo "progs suffix              $progs_suffix"
7161 fi
7162 if test "$extra_version" != ""; then
7163     echo "version string suffix     $extra_version"
7164 fi
7165 echo "big-endian                ${bigendian-no}"
7166 echo "runtime cpu detection     ${runtime_cpudetect-no}"
7167 if enabled x86; then
7168     echo "standalone assembly       ${x86asm-no}"
7169     echo "x86 assembler             ${x86asmexe}"
7170     echo "MMX enabled               ${mmx-no}"
7171     echo "MMXEXT enabled            ${mmxext-no}"
7172     echo "3DNow! enabled            ${amd3dnow-no}"
7173     echo "3DNow! extended enabled   ${amd3dnowext-no}"
7174     echo "SSE enabled               ${sse-no}"
7175     echo "SSSE3 enabled             ${ssse3-no}"
7176     echo "AESNI enabled             ${aesni-no}"
7177     echo "AVX enabled               ${avx-no}"
7178     echo "AVX2 enabled              ${avx2-no}"
7179     echo "AVX-512 enabled           ${avx512-no}"
7180     echo "XOP enabled               ${xop-no}"
7181     echo "FMA3 enabled              ${fma3-no}"
7182     echo "FMA4 enabled              ${fma4-no}"
7183     echo "i686 features enabled     ${i686-no}"
7184     echo "CMOV is fast              ${fast_cmov-no}"
7185     echo "EBX available             ${ebx_available-no}"
7186     echo "EBP available             ${ebp_available-no}"
7187 fi
7188 if enabled aarch64; then
7189     echo "NEON enabled              ${neon-no}"
7190     echo "VFP enabled               ${vfp-no}"
7191 fi
7192 if enabled arm; then
7193     echo "ARMv5TE enabled           ${armv5te-no}"
7194     echo "ARMv6 enabled             ${armv6-no}"
7195     echo "ARMv6T2 enabled           ${armv6t2-no}"
7196     echo "VFP enabled               ${vfp-no}"
7197     echo "NEON enabled              ${neon-no}"
7198     echo "THUMB enabled             ${thumb-no}"
7199 fi
7200 if enabled mips; then
7201     echo "MIPS FPU enabled          ${mipsfpu-no}"
7202     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
7203     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
7204     echo "MIPS MSA enabled          ${msa-no}"
7205     echo "MIPS MSA2 enabled         ${msa2-no}"
7206     echo "LOONGSON MMI enabled      ${mmi-no}"
7207 fi
7208 if enabled ppc; then
7209     echo "AltiVec enabled           ${altivec-no}"
7210     echo "VSX enabled               ${vsx-no}"
7211     echo "POWER8 enabled            ${power8-no}"
7212     echo "PPC 4xx optimizations     ${ppc4xx-no}"
7213     echo "dcbzl available           ${dcbzl-no}"
7214 fi
7215 echo "debug symbols             ${debug-no}"
7216 echo "strip symbols             ${stripping-no}"
7217 echo "optimize for size         ${small-no}"
7218 echo "optimizations             ${optimizations-no}"
7219 echo "static                    ${static-no}"
7220 echo "shared                    ${shared-no}"
7221 echo "postprocessing support    ${postproc-no}"
7222 echo "network support           ${network-no}"
7223 echo "threading support         ${thread_type-no}"
7224 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
7225 echo "texi2html enabled         ${texi2html-no}"
7226 echo "perl enabled              ${perl-no}"
7227 echo "pod2man enabled           ${pod2man-no}"
7228 echo "makeinfo enabled          ${makeinfo-no}"
7229 echo "makeinfo supports HTML    ${makeinfo_html-no}"
7230 test -n "$random_seed" &&
7231     echo "random seed               ${random_seed}"
7232 echo
7233
7234 echo "External libraries:"
7235 print_enabled '' $EXTERNAL_LIBRARY_LIST $EXTERNAL_AUTODETECT_LIBRARY_LIST | print_in_columns
7236 echo
7237
7238 echo "External libraries providing hardware acceleration:"
7239 print_enabled '' $HWACCEL_LIBRARY_LIST $HWACCEL_AUTODETECT_LIBRARY_LIST | print_in_columns
7240 echo
7241
7242 echo "Libraries:"
7243 print_enabled '' $LIBRARY_LIST | print_in_columns
7244 echo
7245
7246 echo "Programs:"
7247 print_enabled '' $PROGRAM_LIST | print_in_columns
7248 echo
7249
7250 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
7251     echo "Enabled ${type}s:"
7252     eval list=\$$(toupper $type)_LIST
7253     print_enabled '_*' $list | print_in_columns
7254     echo
7255 done
7256
7257 if test -n "$ignore_tests"; then
7258     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
7259     echo "Ignored FATE tests:"
7260     echo $ignore_tests | print_in_columns
7261     echo
7262 fi
7263
7264 echo "License: $license"
7265
7266 fi # test "$quiet" != "yes"
7267
7268 if test -n "$WARN_IF_GETS_DISABLED_LIST"; then
7269     for cfg in $WARN_IF_GETS_DISABLED_LIST; do
7270         if disabled $cfg; then
7271             varname=${cfg}_disable_reason
7272             eval "warn \"Disabled $cfg because \$$varname\""
7273         fi
7274     done
7275 fi
7276
7277 if test -n "$WARNINGS"; then
7278     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
7279     enabled fatal_warnings && exit 1
7280 fi
7281
7282 test -e Makefile || echo "include $source_path/Makefile" > Makefile
7283
7284 esc(){
7285     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
7286 }
7287
7288 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
7289
7290 enabled stripping || strip="echo skipping strip"
7291 enabled stripping || striptype=""
7292
7293 config_files="$TMPH ffbuild/config.mak doc/config.texi"
7294
7295 cat > ffbuild/config.mak <<EOF
7296 # Automatically generated by configure - do not modify!
7297 ifndef FFMPEG_CONFIG_MAK
7298 FFMPEG_CONFIG_MAK=1
7299 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
7300 prefix=$prefix
7301 LIBDIR=\$(DESTDIR)$libdir
7302 SHLIBDIR=\$(DESTDIR)$shlibdir
7303 INCDIR=\$(DESTDIR)$incdir
7304 BINDIR=\$(DESTDIR)$bindir
7305 DATADIR=\$(DESTDIR)$datadir
7306 DOCDIR=\$(DESTDIR)$docdir
7307 MANDIR=\$(DESTDIR)$mandir
7308 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
7309 INSTALL_NAME_DIR=$install_name_dir
7310 SRC_PATH=$source_path
7311 SRC_LINK=$source_link
7312 ifndef MAIN_MAKEFILE
7313 SRC_PATH:=\$(SRC_PATH:.%=..%)
7314 endif
7315 CC_IDENT=$cc_ident
7316 ARCH=$arch
7317 INTRINSICS=$intrinsics
7318 EXTERN_PREFIX=$extern_prefix
7319 CC=$cc
7320 CXX=$cxx
7321 AS=$as
7322 OBJCC=$objcc
7323 LD=$ld
7324 DEPCC=$dep_cc
7325 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
7326 DEPAS=$as
7327 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
7328 X86ASM=$x86asmexe
7329 DEPX86ASM=$x86asmexe
7330 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
7331 AR=$ar
7332 ARFLAGS=$arflags
7333 AR_O=$ar_o
7334 AR_CMD=$ar
7335 NM_CMD=$nm
7336 RANLIB=$ranlib
7337 STRIP=$strip
7338 STRIPTYPE=$striptype
7339 NVCC=$nvcc
7340 CP=cp -p
7341 LN_S=$ln_s
7342 CPPFLAGS=$CPPFLAGS
7343 CFLAGS=$CFLAGS
7344 CXXFLAGS=$CXXFLAGS
7345 OBJCFLAGS=$OBJCFLAGS
7346 ASFLAGS=$ASFLAGS
7347 NVCCFLAGS=$nvccflags
7348 AS_C=$AS_C
7349 AS_O=$AS_O
7350 OBJCC_C=$OBJCC_C
7351 OBJCC_E=$OBJCC_E
7352 OBJCC_O=$OBJCC_O
7353 CC_C=$CC_C
7354 CC_E=$CC_E
7355 CC_O=$CC_O
7356 CXX_C=$CXX_C
7357 CXX_O=$CXX_O
7358 NVCC_C=$NVCC_C
7359 NVCC_O=$NVCC_O
7360 LD_O=$LD_O
7361 X86ASM_O=$X86ASM_O
7362 LD_LIB=$LD_LIB
7363 LD_PATH=$LD_PATH
7364 DLLTOOL=$dlltool
7365 WINDRES=$windres
7366 DEPWINDRES=$dep_cc
7367 DOXYGEN=$doxygen
7368 LDFLAGS=$LDFLAGS
7369 LDEXEFLAGS=$LDEXEFLAGS
7370 LDSOFLAGS=$LDSOFLAGS
7371 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
7372 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
7373 X86ASMFLAGS=$X86ASMFLAGS
7374 BUILDSUF=$build_suffix
7375 PROGSSUF=$progs_suffix
7376 FULLNAME=$FULLNAME
7377 LIBPREF=$LIBPREF
7378 LIBSUF=$LIBSUF
7379 LIBNAME=$LIBNAME
7380 SLIBPREF=$SLIBPREF
7381 SLIBSUF=$SLIBSUF
7382 EXESUF=$EXESUF
7383 EXTRA_VERSION=$extra_version
7384 CCDEP=$CCDEP
7385 CXXDEP=$CXXDEP
7386 CCDEP_FLAGS=$CCDEP_FLAGS
7387 ASDEP=$ASDEP
7388 ASDEP_FLAGS=$ASDEP_FLAGS
7389 X86ASMDEP=$X86ASMDEP
7390 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
7391 CC_DEPFLAGS=$CC_DEPFLAGS
7392 AS_DEPFLAGS=$AS_DEPFLAGS
7393 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
7394 HOSTCC=$host_cc
7395 HOSTLD=$host_ld
7396 HOSTCFLAGS=$host_cflags
7397 HOSTCPPFLAGS=$host_cppflags
7398 HOSTEXESUF=$HOSTEXESUF
7399 HOSTLDFLAGS=$host_ldflags
7400 HOSTEXTRALIBS=$host_extralibs
7401 DEPHOSTCC=$host_cc
7402 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
7403 HOSTCCDEP=$HOSTCCDEP
7404 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
7405 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
7406 HOSTCC_C=$HOSTCC_C
7407 HOSTCC_O=$HOSTCC_O
7408 HOSTLD_O=$HOSTLD_O
7409 TARGET_EXEC=$target_exec $target_exec_args
7410 TARGET_PATH=$target_path
7411 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
7412 CFLAGS-ffplay=${sdl2_cflags}
7413 CFLAGS_HEADERS=$CFLAGS_HEADERS
7414 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
7415 EXTRALIBS=$extralibs
7416 COMPAT_OBJS=$compat_objs
7417 INSTALL=$install
7418 LIBTARGET=${LIBTARGET}
7419 SLIBNAME=${SLIBNAME}
7420 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
7421 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
7422 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
7423 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
7424 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
7425 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
7426 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
7427 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
7428 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
7429 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
7430 NOREDZONE_FLAGS=$noredzone_flags
7431 LIBFUZZER_PATH=$libfuzzer_path
7432 IGNORE_TESTS=$ignore_tests
7433 EOF
7434
7435 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
7436
7437 for entry in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
7438     eval echo "EXTRALIBS-${entry}=\$${entry}_extralibs" >> ffbuild/config.mak
7439 done
7440
7441 cat > $TMPH <<EOF
7442 /* Automatically generated by configure - do not modify! */
7443 #ifndef FFMPEG_CONFIG_H
7444 #define FFMPEG_CONFIG_H
7445 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
7446 #define FFMPEG_LICENSE "$(c_escape $license)"
7447 #define CONFIG_THIS_YEAR 2019
7448 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
7449 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
7450 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
7451 #define av_restrict $restrict_keyword
7452 #define EXTERN_PREFIX "${extern_prefix}"
7453 #define EXTERN_ASM ${extern_prefix}
7454 #define BUILDSUF "$build_suffix"
7455 #define SLIBSUF "$SLIBSUF"
7456 #define HAVE_MMX2 HAVE_MMXEXT
7457 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
7458 EOF
7459
7460 test -n "$assert_level" &&
7461     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
7462
7463 test -n "$malloc_prefix" &&
7464     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
7465
7466 if enabled x86asm; then
7467     append config_files $TMPASM
7468     cat > $TMPASM <<EOF
7469 ; Automatically generated by configure - do not modify!
7470 EOF
7471 fi
7472
7473 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
7474
7475
7476 mkdir -p doc
7477 mkdir -p tests
7478 mkdir -p tests/api
7479 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
7480
7481 print_config ARCH_   "$config_files" $ARCH_LIST
7482 print_config HAVE_   "$config_files" $HAVE_LIST
7483 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
7484                                      $CONFIG_EXTRA      \
7485                                      $ALL_COMPONENTS    \
7486
7487 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
7488 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
7489
7490 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
7491 cp_if_changed $TMPH config.h
7492 touch ffbuild/.config
7493
7494 enabled x86asm && cp_if_changed $TMPASM config.asm
7495
7496 cat > $TMPH <<EOF
7497 /* Generated by ffmpeg configure */
7498 #ifndef AVUTIL_AVCONFIG_H
7499 #define AVUTIL_AVCONFIG_H
7500 EOF
7501
7502 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
7503
7504 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
7505
7506 cp_if_changed $TMPH libavutil/avconfig.h
7507
7508 # full_filter_name_foo=vf_foo
7509 # full_filter_name_bar=asrc_bar
7510 # ...
7511 eval "$(sed -n "s/^extern AVFilter ff_\([avfsinkrc]\{2,5\}\)_\(.*\);/full_filter_name_\2=\1_\2/p" $source_path/libavfilter/allfilters.c)"
7512
7513 # generate the lists of enabled components
7514 print_enabled_components(){
7515     file=$1
7516     struct_name=$2
7517     name=$3
7518     shift 3
7519     echo "static const $struct_name * const $name[] = {" > $TMPH
7520     for c in $*; do
7521         if enabled $c; then
7522             case $name in
7523                 filter_list)
7524                     eval c=\$full_filter_name_${c%_filter}
7525                 ;;
7526                 indev_list)
7527                     c=${c%_indev}_demuxer
7528                 ;;
7529                 outdev_list)
7530                     c=${c%_outdev}_muxer
7531                 ;;
7532             esac
7533             printf "    &ff_%s,\n" $c >> $TMPH
7534         fi
7535     done
7536     if [ "$name" = "filter_list" ]; then
7537         for c in asrc_abuffer vsrc_buffer asink_abuffer vsink_buffer; do
7538             printf "    &ff_%s,\n" $c >> $TMPH
7539         done
7540     fi
7541     echo "    NULL };" >> $TMPH
7542     cp_if_changed $TMPH $file
7543 }
7544
7545 print_enabled_components libavfilter/filter_list.c AVFilter filter_list $FILTER_LIST
7546 print_enabled_components libavcodec/codec_list.c AVCodec codec_list $CODEC_LIST
7547 print_enabled_components libavcodec/parser_list.c AVCodecParser parser_list $PARSER_LIST
7548 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
7549 print_enabled_components libavformat/demuxer_list.c AVInputFormat demuxer_list $DEMUXER_LIST
7550 print_enabled_components libavformat/muxer_list.c AVOutputFormat muxer_list $MUXER_LIST
7551 print_enabled_components libavdevice/indev_list.c AVInputFormat indev_list $INDEV_LIST
7552 print_enabled_components libavdevice/outdev_list.c AVOutputFormat outdev_list $OUTDEV_LIST
7553 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
7554
7555 # Settings for pkg-config files
7556
7557 cat > $TMPH <<EOF
7558 # Automatically generated by configure - do not modify!
7559 shared=$shared
7560 build_suffix=$build_suffix
7561 prefix=$prefix
7562 libdir=$libdir
7563 incdir=$incdir
7564 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
7565 source_path=${source_path}
7566 LIBPREF=${LIBPREF}
7567 LIBSUF=${LIBSUF}
7568 extralibs_avutil="$avutil_extralibs"
7569 extralibs_avcodec="$avcodec_extralibs"
7570 extralibs_avformat="$avformat_extralibs"
7571 extralibs_avdevice="$avdevice_extralibs"
7572 extralibs_avfilter="$avfilter_extralibs"
7573 extralibs_avresample="$avresample_extralibs"
7574 extralibs_postproc="$postproc_extralibs"
7575 extralibs_swscale="$swscale_extralibs"
7576 extralibs_swresample="$swresample_extralibs"
7577 EOF
7578
7579 for lib in $LIBRARY_LIST; do
7580     lib_deps="$(eval echo \$${lib}_deps)"
7581     echo ${lib}_deps=\"$lib_deps\" >> $TMPH
7582 done
7583
7584 cp_if_changed $TMPH ffbuild/config.sh