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

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