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-libass          enable libass subtitles rendering,
 222                            needed for subtitles and ass filter [no]
 223   --enable-libbluray       enable BluRay reading using libbluray [no]
 224   --enable-libbs2b         enable bs2b DSP library [no]
 225   --enable-libcaca         enable textual display using libcaca [no]
 226   --enable-libcelt         enable CELT decoding via libcelt [no]
 227   --enable-libcdio         enable audio CD grabbing with libcdio [no]
 228   --enable-libcodec2       enable codec2 en/decoding using libcodec2 [no]
 229   --enable-libdav1d        enable AV1 decoding via libdav1d [no]
 230   --enable-libdavs2        enable AVS2 decoding via libdavs2 [no]
 231   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 232                            and libraw1394 [no]
 233   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 234   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 235   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
 236   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
 237   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
 238   --enable-libgme          enable Game Music Emu via libgme [no]
 239   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 240   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 241   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 242   --enable-libjack         enable JACK audio sound server [no]
 243   --enable-libklvanc       enable Kernel Labs VANC processing [no]
 244   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
 245   --enable-liblensfun      enable lensfun lens correction [no]
 246   --enable-libmodplug      enable ModPlug via libmodplug [no]
 247   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 248   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 249   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 250   --enable-libopencv       enable video filtering via libopencv [no]
 251   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 252   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 253   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
 254   --enable-libopus         enable Opus de/encoding via libopus [no]
 255   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 256   --enable-librsvg         enable SVG rasterization via librsvg [no]
 257   --enable-librubberband   enable rubberband needed for rubberband filter [no]
 258   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 259   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 260   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 261   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
 262   --enable-libsoxr         enable Include libsoxr resampling [no]
 263   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 264   --enable-libsrt          enable Haivision SRT protocol via libsrt [no]
 265   --enable-libssh          enable SFTP protocol via libssh [no]
 266   --enable-libtensorflow   enable TensorFlow as a DNN module backend
 267                            for DNN based filters like sr [no]
 268   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
 269   --enable-libtheora       enable Theora encoding via libtheora [no]
 270   --enable-libtls          enable LibreSSL (via libtls), needed for https support
 271                            if openssl, gnutls or mbedtls is not used [no]
 272   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 273   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 274   --enable-libvidstab      enable video stabilization using vid.stab [no]
 275   --enable-libvmaf         enable vmaf filter via libvmaf [no]
 276   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 277   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 278                            native implementation exists [no]
 279   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 280   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 281   --enable-libwebp         enable WebP encoding via libwebp [no]
 282   --enable-libx264         enable H.264 encoding via x264 [no]
 283   --enable-libx265         enable HEVC encoding via x265 [no]
 284   --enable-libxavs         enable AVS encoding via xavs [no]
 285   --enable-libxavs2        enable AVS2 encoding via xavs2 [no]
 286   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
 287   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
 288   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
 289   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
 290   --enable-libxvid         enable Xvid encoding via xvidcore,
 291                            native MPEG-4/Xvid encoder exists [no]
 292   --enable-libxml2         enable XML parsing using the C library libxml2, needed
 293                            for dash demuxing support [no]
 294   --enable-libzimg         enable z.lib, needed for zscale filter [no]
 295   --enable-libzmq          enable message passing via libzmq [no]
 296   --enable-libzvbi         enable teletext support via libzvbi [no]
 297   --enable-lv2             enable LV2 audio filtering [no]
 298   --disable-lzma           disable lzma [autodetect]
 299   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
 300   --enable-libndi_newtek   enable Newteck NDI 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-sdk        enable CUDA features that require the CUDA SDK [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 enable(){
 652     set_all yes $*
 653 }
 654
 655 disable(){
 656     set_all no $*
 657 }
 658
 659 enable_weak(){
 660     set_weak yes $*
 661 }
 662
 663 disable_weak(){
 664     set_weak no $*
 665 }
 666
 667 enable_sanitized(){
 668     for var; do
 669         enable $(sanitize_var_name $var)
 670     done
 671 }
 672
 673 disable_sanitized(){
 674     for var; do
 675         disable $(sanitize_var_name $var)
 676     done
 677 }
 678
 679 do_enable_deep(){
 680     for var; do
 681         enabled $var && continue
 682         set -- $var
 683         eval enable_deep \$${var}_select
 684         var=$1
 685         eval enable_deep_weak \$${var}_suggest
 686     done
 687 }
 688
 689 enable_deep(){
 690     do_enable_deep $*
 691     enable $*
 692 }
 693
 694 enable_deep_weak(){
 695     for var; do
 696         disabled $var && continue
 697         set -- $var
 698         do_enable_deep $var
 699         var=$1
 700         enable_weak $var
 701     done
 702 }
 703
 704 requested(){
 705     test "${1#!}" = "$1" && op="=" || op="!="
 706     eval test "x\$${1#!}_requested" $op "xyes"
 707 }
 708
 709 enabled(){
 710     test "${1#!}" = "$1" && op="=" || op="!="
 711     eval test "x\$${1#!}" $op "xyes"
 712 }
 713
 714 disabled(){
 715     test "${1#!}" = "$1" && op="=" || op="!="
 716     eval test "x\$${1#!}" $op "xno"
 717 }
 718
 719 enabled_all(){
 720     for opt; do
 721         enabled $opt || return 1
 722     done
 723 }
 724
 725 disabled_all(){
 726     for opt; do
 727         disabled $opt || return 1
 728     done
 729 }
 730
 731 enabled_any(){
 732     for opt; do
 733         enabled $opt && return 0
 734     done
 735 }
 736
 737 disabled_any(){
 738     for opt; do
 739         disabled $opt && return 0
 740     done
 741     return 1
 742 }
 743
 744 set_default(){
 745     for opt; do
 746         eval : \${$opt:=\$${opt}_default}
 747     done
 748 }
 749
 750 is_in(){
 751     value=$1
 752     shift
 753     for var in $*; do
 754         [ $var = $value ] && return 0
 755     done
 756     return 1
 757 }
 758
 759 # The cfg loop is very hot (several thousands iterations), and in bash also
 760 # potentialy quite slow. Try to abort the iterations early, preferably without
 761 # calling functions. 70%+ of the time cfg is already done or without deps.
 762 check_deps(){
 763     for cfg; do
 764         eval [ x\$${cfg}_checking = xdone ] && continue
 765         eval [ x\$${cfg}_checking = xinprogress ] && die "Circular dependency for $cfg."
 766
 767         eval "
 768         dep_all=\$${cfg}_deps
 769         dep_any=\$${cfg}_deps_any
 770         dep_con=\$${cfg}_conflict
 771         dep_sel=\$${cfg}_select
 772         dep_sgs=\$${cfg}_suggest
 773         dep_ifa=\$${cfg}_if
 774         dep_ifn=\$${cfg}_if_any
 775         "
 776
 777         # most of the time here $cfg has no deps - avoid costly no-op work
 778         if [ "$dep_all$dep_any$dep_con$dep_sel$dep_sgs$dep_ifa$dep_ifn" ]; then
 779             eval ${cfg}_checking=inprogress
 780
 781             set -- $cfg "$dep_all" "$dep_any" "$dep_con" "$dep_sel" "$dep_sgs" "$dep_ifa" "$dep_ifn"
 782             check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
 783             cfg=$1; dep_all=$2; dep_any=$3; dep_con=$4; dep_sel=$5 dep_sgs=$6; dep_ifa=$7; dep_ifn=$8
 784
 785             [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 786             [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 787             enabled_all  $dep_all || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not all dependencies are satisfied: $dep_all"; }
 788             enabled_any  $dep_any || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not any dependency is satisfied: $dep_any"; }
 789             disabled_all $dep_con || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some conflicting dependencies are unsatisfied: $dep_con"; }
 790             disabled_any $dep_sel && { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some selected dependency is unsatisfied: $dep_sel"; }
 791
 792             enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
 793
 794             for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
 795                 # filter out library deps, these do not belong in extralibs
 796                 is_in $dep $LIBRARY_LIST && continue
 797                 enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
 798             done
 799         fi
 800
 801         eval ${cfg}_checking=done
 802     done
 803 }
 804
 805 print_config(){
 806     pfx=$1
 807     files=$2
 808     shift 2
 809     map 'eval echo "$v \${$v:-no}"' "$@" |
 810     awk "BEGIN { split(\"$files\", files) }
 811         {
 812             c = \"$pfx\" toupper(\$1);
 813             v = \$2;
 814             sub(/yes/, 1, v);
 815             sub(/no/,  0, v);
 816             for (f in files) {
 817                 file = files[f];
 818                 if (file ~ /\\.h\$/) {
 819                     printf(\"#define %s %d\\n\", c, v) >>file;
 820                 } else if (file ~ /\\.asm\$/) {
 821                     printf(\"%%define %s %d\\n\", c, v) >>file;
 822                 } else if (file ~ /\\.mak\$/) {
 823                     n = -v ? \"\" : \"!\";
 824                     printf(\"%s%s=yes\\n\", n, c) >>file;
 825                 } else if (file ~ /\\.texi\$/) {
 826                     pre = -v ? \"\" : \"@c \";
 827                     yesno = \$2;
 828                     c2 = tolower(c);
 829                     gsub(/_/, \"-\", c2);
 830                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 831                 }
 832             }
 833         }"
 834 }
 835
 836 print_enabled(){
 837     suf=$1
 838     shift
 839     for v; do
 840         enabled $v && printf "%s\n" ${v%$suf}
 841     done
 842 }
 843
 844 append(){
 845     var=$1
 846     shift
 847     eval "$var=\"\$$var $*\""
 848 }
 849
 850 prepend(){
 851     var=$1
 852     shift
 853     eval "$var=\"$* \$$var\""
 854 }
 855
 856 reverse () {
 857     eval '
 858         reverse_out=
 859         for v in $'$1'; do
 860             reverse_out="$v $reverse_out"
 861         done
 862         '$1'=$reverse_out
 863     '
 864 }
 865
 866 # keeps the last occurence of each non-unique item
 867 unique(){
 868     unique_out=
 869     eval unique_in=\$$1
 870     reverse unique_in
 871     for v in $unique_in; do
 872         # " $unique_out" +space such that every item is surrounded with spaces
 873         case " $unique_out" in *" $v "*) continue; esac  # already in list
 874         unique_out="$unique_out$v "
 875     done
 876     reverse unique_out
 877     eval $1=\$unique_out
 878 }
 879
 880 resolve(){
 881     resolve_out=
 882     eval resolve_in=\$$1
 883     for v in $resolve_in; do
 884         eval 'resolve_out="$resolve_out$'$v' "'
 885     done
 886     eval $1=\$resolve_out
 887 }
 888
 889 add_cppflags(){
 890     append CPPFLAGS "$@"
 891 }
 892
 893 add_cflags(){
 894     append CFLAGS $($cflags_filter "$@")
 895 }
 896
 897 add_cflags_headers(){
 898     append CFLAGS_HEADERS $($cflags_filter "$@")
 899 }
 900
 901 add_cxxflags(){
 902     append CXXFLAGS $($cflags_filter "$@")
 903 }
 904
 905 add_objcflags(){
 906     append OBJCFLAGS $($objcflags_filter "$@")
 907 }
 908
 909 add_asflags(){
 910     append ASFLAGS $($asflags_filter "$@")
 911 }
 912
 913 add_ldflags(){
 914     append LDFLAGS $($ldflags_filter "$@")
 915 }
 916
 917 add_ldexeflags(){
 918     append LDEXEFLAGS $($ldflags_filter "$@")
 919 }
 920
 921 add_ldsoflags(){
 922     append LDSOFLAGS $($ldflags_filter "$@")
 923 }
 924
 925 add_extralibs(){
 926     prepend extralibs $($ldflags_filter "$@")
 927 }
 928
 929 add_stripflags(){
 930     append ASMSTRIPFLAGS "$@"
 931 }
 932
 933 add_host_cppflags(){
 934     append host_cppflags "$@"
 935 }
 936
 937 add_host_cflags(){
 938     append host_cflags $($host_cflags_filter "$@")
 939 }
 940
 941 add_host_ldflags(){
 942     append host_ldflags $($host_ldflags_filter "$@")
 943 }
 944
 945 add_compat(){
 946     append compat_objs $1
 947     shift
 948     map 'add_cppflags -D$v' "$@"
 949 }
 950
 951 test_cmd(){
 952     log "$@"
 953     "$@" >> $logfile 2>&1
 954 }
 955
 956 test_stat(){
 957     log test_stat "$@"
 958     stat "$1" >> $logfile 2>&1
 959 }
 960
 961 cc_e(){
 962     eval printf '%s\\n' $CC_E
 963 }
 964
 965 cc_o(){
 966     eval printf '%s\\n' $CC_O
 967 }
 968
 969 as_o(){
 970     eval printf '%s\\n' $AS_O
 971 }
 972
 973 x86asm_o(){
 974     eval printf '%s\\n' $X86ASM_O
 975 }
 976
 977 ld_o(){
 978     eval printf '%s\\n' $LD_O
 979 }
 980
 981 hostcc_e(){
 982     eval printf '%s\\n' $HOSTCC_E
 983 }
 984
 985 hostcc_o(){
 986     eval printf '%s\\n' $HOSTCC_O
 987 }
 988
 989 test_cc(){
 990     log test_cc "$@"
 991     cat > $TMPC
 992     log_file $TMPC
 993     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 994 }
 995
 996 test_cxx(){
 997     log test_cxx "$@"
 998     cat > $TMPCPP
 999     log_file $TMPCPP
1000     test_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
1001 }
1002
1003 test_objcc(){
1004     log test_objcc "$@"
1005     cat > $TMPM
1006     log_file $TMPM
1007     test_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
1008 }
1009
1010 test_cpp(){
1011     log test_cpp "$@"
1012     cat > $TMPC
1013     log_file $TMPC
1014     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
1015 }
1016
1017 test_as(){
1018     log test_as "$@"
1019     cat > $TMPS
1020     log_file $TMPS
1021     test_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
1022 }
1023
1024 test_x86asm(){
1025     log test_x86asm "$@"
1026     echo "$1" > $TMPASM
1027     log_file $TMPASM
1028     shift
1029     test_cmd $x86asmexe $X86ASMFLAGS -Werror "$@" $(x86asm_o $TMPO) $TMPASM
1030 }
1031
1032 check_cmd(){
1033     log check_cmd "$@"
1034     cmd=$1
1035     disabled $cmd && return
1036     disable $cmd
1037     test_cmd $@ && enable $cmd
1038 }
1039
1040 check_as(){
1041     log check_as "$@"
1042     name=$1
1043     code=$2
1044     shift 2
1045     disable $name
1046     test_as $@ <<EOF && enable $name
1047 $code
1048 EOF
1049 }
1050
1051 check_inline_asm(){
1052     log check_inline_asm "$@"
1053     name="$1"
1054     code="$2"
1055     shift 2
1056     disable $name
1057     test_cc "$@" <<EOF && enable $name
1058 void foo(void){ __asm__ volatile($code); }
1059 EOF
1060 }
1061
1062 check_inline_asm_flags(){
1063     log check_inline_asm_flags "$@"
1064     name="$1"
1065     code="$2"
1066     flags=''
1067     shift 2
1068     while [ "$1" != "" ]; do
1069       append flags $1
1070       shift
1071     done;
1072     disable $name
1073     cat > $TMPC <<EOF
1074 void foo(void){ __asm__ volatile($code); }
1075 EOF
1076     log_file $TMPC
1077     test_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
1078     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
1079 }
1080
1081 check_insn(){
1082     log check_insn "$@"
1083     check_inline_asm ${1}_inline "\"$2\""
1084     check_as ${1}_external "$2"
1085 }
1086
1087 check_x86asm(){
1088     log check_x86asm "$@"
1089     name=$1
1090     shift
1091     disable $name
1092     test_x86asm "$@" && enable $name
1093 }
1094
1095 test_ld(){
1096     log test_ld "$@"
1097     type=$1
1098     shift 1
1099     flags=$(filter_out '-l*|*.so' $@)
1100     libs=$(filter '-l*|*.so' $@)
1101     test_$type $($cflags_filter $flags) || return
1102     flags=$($ldflags_filter $flags)
1103     libs=$($ldflags_filter $libs)
1104     test_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1105 }
1106
1107 check_ld(){
1108     log check_ld "$@"
1109     type=$1
1110     name=$2
1111     shift 2
1112     disable $name
1113     test_ld $type $@ && enable $name
1114 }
1115
1116 print_include(){
1117     hdr=$1
1118     test "${hdr%.h}" = "${hdr}" &&
1119         echo "#include $hdr"    ||
1120         echo "#include <$hdr>"
1121 }
1122
1123 test_code(){
1124     log test_code "$@"
1125     check=$1
1126     headers=$2
1127     code=$3
1128     shift 3
1129     {
1130         for hdr in $headers; do
1131             print_include $hdr
1132         done
1133         echo "int main(void) { $code; return 0; }"
1134     } | test_$check "$@"
1135 }
1136
1137 check_cppflags(){
1138     log check_cppflags "$@"
1139     test_cpp "$@" <<EOF && append CPPFLAGS "$@"
1140 #include <stdlib.h>
1141 EOF
1142 }
1143
1144 test_cflags(){
1145     log test_cflags "$@"
1146     set -- $($cflags_filter "$@")
1147     test_cc "$@" <<EOF
1148 int x;
1149 EOF
1150 }
1151
1152 check_cflags(){
1153     log check_cflags "$@"
1154     test_cflags "$@" && add_cflags "$@"
1155 }
1156
1157 check_cxxflags(){
1158     log check_cxxflags "$@"
1159     set -- $($cflags_filter "$@")
1160     test_cxx "$@" <<EOF && append CXXFLAGS "$@"
1161 int x;
1162 EOF
1163 }
1164
1165 test_objcflags(){
1166     log test_objcflags "$@"
1167     set -- $($objcflags_filter "$@")
1168     test_objcc "$@" <<EOF
1169 int x;
1170 EOF
1171 }
1172
1173 check_objcflags(){
1174     log check_objcflags "$@"
1175     test_objcflags "$@" && add_objcflags "$@"
1176 }
1177
1178 test_ldflags(){
1179     log test_ldflags "$@"
1180     set -- $($ldflags_filter "$@")
1181     test_ld "cc" "$@" <<EOF
1182 int main(void){ return 0; }
1183 EOF
1184 }
1185
1186 check_ldflags(){
1187     log check_ldflags "$@"
1188     test_ldflags "$@" && add_ldflags "$@"
1189 }
1190
1191 test_stripflags(){
1192     log test_stripflags "$@"
1193     # call test_cc to get a fresh TMPO
1194     test_cc <<EOF
1195 int main(void) { return 0; }
1196 EOF
1197     test_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1198 }
1199
1200 check_stripflags(){
1201     log check_stripflags "$@"
1202     test_stripflags "$@" && add_stripflags "$@"
1203 }
1204
1205 check_headers(){
1206     log check_headers "$@"
1207     headers=$1
1208     shift
1209     disable_sanitized $headers
1210     {
1211         for hdr in $headers; do
1212             print_include $hdr
1213         done
1214         echo "int x;"
1215     } | test_cpp "$@" && enable_sanitized $headers
1216 }
1217
1218 check_header_objcc(){
1219     log check_header_objcc "$@"
1220     rm -f -- "$TMPO"
1221     header=$1
1222     shift
1223     disable_sanitized $header
1224     {
1225        echo "#include <$header>"
1226        echo "int main(void) { return 0; }"
1227     } | test_objcc && test_stat "$TMPO" && enable_sanitized $header
1228 }
1229
1230 check_apple_framework(){
1231     log check_apple_framework "$@"
1232     framework="$1"
1233     name="$(tolower $framework)"
1234     header="${framework}/${framework}.h"
1235     disable $name
1236     check_header_objcc $header &&
1237         enable $name && eval ${name}_extralibs='"-framework $framework"'
1238 }
1239
1240 check_func(){
1241     log check_func "$@"
1242     func=$1
1243     shift
1244     disable $func
1245     test_ld "cc" "$@" <<EOF && enable $func
1246 extern int $func();
1247 int main(void){ $func(); }
1248 EOF
1249 }
1250
1251 check_complexfunc(){
1252     log check_complexfunc "$@"
1253     func=$1
1254     narg=$2
1255     shift 2
1256     test $narg = 2 && args="f, g" || args="f * I"
1257     disable $func
1258     test_ld "cc" "$@" <<EOF && enable $func
1259 #include <complex.h>
1260 #include <math.h>
1261 float foo(complex float f, complex float g) { return $func($args); }
1262 int main(void){ return (int) foo; }
1263 EOF
1264 }
1265
1266 check_mathfunc(){
1267     log check_mathfunc "$@"
1268     func=$1
1269     narg=$2
1270     shift 2
1271     test $narg = 2 && args="f, g" || args="f"
1272     disable $func
1273     test_ld "cc" "$@" <<EOF && enable $func
1274 #include <math.h>
1275 float foo(float f, float g) { return $func($args); }
1276 int main(void){ return (int) foo; }
1277 EOF
1278 }
1279
1280 check_func_headers(){
1281     log check_func_headers "$@"
1282     headers=$1
1283     funcs=$2
1284     shift 2
1285     {
1286         for hdr in $headers; do
1287             print_include $hdr
1288         done
1289         echo "#include <stdint.h>"
1290         for func in $funcs; do
1291             echo "long check_$func(void) { return (long) $func; }"
1292         done
1293         echo "int main(void) { int ret = 0;"
1294         # LTO could optimize out the test functions without this
1295         for func in $funcs; do
1296             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1297         done
1298         echo "return ret; }"
1299     } | test_ld "cc" "$@" && enable $funcs && enable_sanitized $headers
1300 }
1301
1302 check_class_headers_cpp(){
1303     log check_class_headers_cpp "$@"
1304     headers=$1
1305     classes=$2
1306     shift 2
1307     {
1308         for hdr in $headers; do
1309             echo "#include <$hdr>"
1310         done
1311         echo "int main(void) { "
1312         i=1
1313         for class in $classes; do
1314             echo "$class obj$i;"
1315             i=$(expr $i + 1)
1316         done
1317         echo "return 0; }"
1318     } | test_ld "cxx" "$@" && enable $funcs && enable_sanitized $headers
1319 }
1320
1321 test_cpp_condition(){
1322     log test_cpp_condition "$@"
1323     header=$1
1324     condition=$2
1325     shift 2
1326     test_cpp "$@" <<EOF
1327 #include <$header>
1328 #if !($condition)
1329 #error "unsatisfied condition: $condition"
1330 #endif
1331 EOF
1332 }
1333
1334 check_cpp_condition(){
1335     log check_cpp_condition "$@"
1336     name=$1
1337     shift 1
1338     disable $name
1339     test_cpp_condition "$@" && enable $name
1340 }
1341
1342 test_cflags_cc(){
1343     log test_cflags_cc "$@"
1344     flags=$1
1345     header=$2
1346     condition=$3
1347     shift 3
1348     set -- $($cflags_filter "$flags")
1349     test_cc "$@" <<EOF
1350 #include <$header>
1351 #if !($condition)
1352 #error "unsatisfied condition: $condition"
1353 #endif
1354 EOF
1355 }
1356
1357 check_lib(){
1358     log check_lib "$@"
1359     name="$1"
1360     headers="$2"
1361     funcs="$3"
1362     shift 3
1363     disable $name
1364     check_func_headers "$headers" "$funcs" "$@" &&
1365         enable $name && eval ${name}_extralibs="\$@"
1366 }
1367
1368 check_lib_cpp(){
1369     log check_lib_cpp "$@"
1370     name="$1"
1371     headers="$2"
1372     classes="$3"
1373     shift 3
1374     disable $name
1375     check_class_headers_cpp "$headers" "$classes" "$@" &&
1376         enable $name && eval ${name}_extralibs="\$@"
1377 }
1378
1379 test_pkg_config(){
1380     log test_pkg_config "$@"
1381     name="$1"
1382     pkg_version="$2"
1383     pkg="${2%% *}"
1384     headers="$3"
1385     funcs="$4"
1386     shift 4
1387     disable $name
1388     test_cmd $pkg_config --exists --print-errors $pkg_version || return
1389     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1390     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1391     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1392         enable $name &&
1393         set_sanitized "${name}_cflags"    $pkg_cflags &&
1394         set_sanitized "${name}_extralibs" $pkg_libs
1395 }
1396
1397 check_pkg_config(){
1398     log check_pkg_config "$@"
1399     name="$1"
1400     test_pkg_config "$@" &&
1401         eval add_cflags \$${name}_cflags
1402 }
1403
1404 test_exec(){
1405     test_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1406 }
1407
1408 check_exec_crash(){
1409     log check_exec_crash "$@"
1410     code=$(cat)
1411
1412     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1413     # are safe but may not be available everywhere.  Thus we use
1414     # raise(SIGTERM) instead.  The check is run in a subshell so we
1415     # can redirect the "Terminated" message from the shell.  SIGBUS
1416     # is not defined by standard C so it is used conditionally.
1417
1418     (test_exec "$@") >> $logfile 2>&1 <<EOF
1419 #include <signal.h>
1420 static void sighandler(int sig){
1421     raise(SIGTERM);
1422 }
1423 int foo(void){
1424     $code
1425 }
1426 int (*func_ptr)(void) = foo;
1427 int main(void){
1428     signal(SIGILL, sighandler);
1429     signal(SIGFPE, sighandler);
1430     signal(SIGSEGV, sighandler);
1431 #ifdef SIGBUS
1432     signal(SIGBUS, sighandler);
1433 #endif
1434     return func_ptr();
1435 }
1436 EOF
1437 }
1438
1439 check_type(){
1440     log check_type "$@"
1441     headers=$1
1442     type=$2
1443     shift 2
1444     disable_sanitized "$type"
1445     test_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1446 }
1447
1448 check_struct(){
1449     log check_struct "$@"
1450     headers=$1
1451     struct=$2
1452     member=$3
1453     shift 3
1454     disable_sanitized "${struct}_${member}"
1455     test_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1456         enable_sanitized "${struct}_${member}"
1457 }
1458
1459 check_builtin(){
1460     log check_builtin "$@"
1461     name=$1
1462     headers=$2
1463     builtin=$3
1464     shift 3
1465     disable "$name"
1466     test_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1467 }
1468
1469 check_compile_assert(){
1470     log check_compile_assert "$@"
1471     name=$1
1472     headers=$2
1473     condition=$3
1474     shift 3
1475     disable "$name"
1476     test_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1477 }
1478
1479 check_cc(){
1480     log check_cc "$@"
1481     name=$1
1482     shift
1483     disable "$name"
1484     test_code cc "$@" && enable "$name"
1485 }
1486
1487 require(){
1488     log require "$@"
1489     name_version="$1"
1490     name="${1%% *}"
1491     shift
1492     check_lib $name "$@" || die "ERROR: $name_version not found"
1493 }
1494
1495 require_cc(){
1496     log require_cc "$@"
1497     name="$1"
1498     check_cc "$@" || die "ERROR: $name failed"
1499 }
1500
1501 require_cpp(){
1502     name="$1"
1503     headers="$2"
1504     classes="$3"
1505     shift 3
1506     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1507 }
1508
1509 require_headers(){
1510     log require_headers "$@"
1511     headers="$1"
1512     check_headers "$@" || die "ERROR: $headers not found"
1513 }
1514
1515 require_cpp_condition(){
1516     log require_cpp_condition "$@"
1517     condition="$3"
1518     check_cpp_condition "$@" || die "ERROR: $condition not satisfied"
1519 }
1520
1521 require_pkg_config(){
1522     log require_pkg_config "$@"
1523     pkg_version="$2"
1524     check_pkg_config "$@" || die "ERROR: $pkg_version not found using pkg-config$pkg_config_fail_message"
1525 }
1526
1527 test_host_cc(){
1528     log test_host_cc "$@"
1529     cat > $TMPC
1530     log_file $TMPC
1531     test_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1532 }
1533
1534 test_host_cpp(){
1535     log test_host_cpp "$@"
1536     cat > $TMPC
1537     log_file $TMPC
1538     test_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1539 }
1540
1541 check_host_cppflags(){
1542     log check_host_cppflags "$@"
1543     test_host_cpp "$@" <<EOF && append host_cppflags "$@"
1544 #include <stdlib.h>
1545 EOF
1546 }
1547
1548 check_host_cflags(){
1549     log check_host_cflags "$@"
1550     set -- $($host_cflags_filter "$@")
1551     test_host_cc "$@" <<EOF && append host_cflags "$@"
1552 int x;
1553 EOF
1554 }
1555
1556 test_host_cpp_condition(){
1557     log test_host_cpp_condition "$@"
1558     header=$1
1559     condition=$2
1560     shift 2
1561     test_host_cpp "$@" <<EOF
1562 #include <$header>
1563 #if !($condition)
1564 #error "unsatisfied condition: $condition"
1565 #endif
1566 EOF
1567 }
1568
1569 check_host_cpp_condition(){
1570     log check_host_cpp_condition "$@"
1571     name=$1
1572     shift 1
1573     disable $name
1574     test_host_cpp_condition "$@" && enable $name
1575 }
1576
1577 cp_if_changed(){
1578     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1579     mkdir -p "$(dirname $2)"
1580     cp -f "$1" "$2"
1581 }
1582
1583 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1584 # system-dependent things.
1585
1586 AVCODEC_COMPONENTS="
1587     bsfs
1588     decoders
1589     encoders
1590     hwaccels
1591     parsers
1592 "
1593
1594 AVDEVICE_COMPONENTS="
1595     indevs
1596     outdevs
1597 "
1598
1599 AVFILTER_COMPONENTS="
1600     filters
1601 "
1602
1603 AVFORMAT_COMPONENTS="
1604     demuxers
1605     muxers
1606     protocols
1607 "
1608
1609 COMPONENT_LIST="
1610     $AVCODEC_COMPONENTS
1611     $AVDEVICE_COMPONENTS
1612     $AVFILTER_COMPONENTS
1613     $AVFORMAT_COMPONENTS
1614 "
1615
1616 EXAMPLE_LIST="
1617     avio_dir_cmd_example
1618     avio_reading_example
1619     decode_audio_example
1620     decode_video_example
1621     demuxing_decoding_example
1622     encode_audio_example
1623     encode_video_example
1624     extract_mvs_example
1625     filter_audio_example
1626     filtering_audio_example
1627     filtering_video_example
1628     http_multiclient_example
1629     hw_decode_example
1630     metadata_example
1631     muxing_example
1632     qsvdec_example
1633     remuxing_example
1634     resampling_audio_example
1635     scaling_video_example
1636     transcode_aac_example
1637     transcoding_example
1638     vaapi_encode_example
1639     vaapi_transcode_example
1640 "
1641
1642 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1643     alsa
1644     appkit
1645     avfoundation
1646     bzlib
1647     coreimage
1648     iconv
1649     libxcb
1650     libxcb_shm
1651     libxcb_shape
1652     libxcb_xfixes
1653     lzma
1654     schannel
1655     sdl2
1656     securetransport
1657     sndio
1658     xlib
1659     zlib
1660 "
1661
1662 EXTERNAL_LIBRARY_GPL_LIST="
1663     avisynth
1664     frei0r
1665     libcdio
1666     libdavs2
1667     librubberband
1668     libvidstab
1669     libx264
1670     libx265
1671     libxavs
1672     libxavs2
1673     libxvid
1674 "
1675
1676 EXTERNAL_LIBRARY_NONFREE_LIST="
1677     decklink
1678     libndi_newtek
1679     libfdk_aac
1680     openssl
1681     libtls
1682 "
1683
1684 EXTERNAL_LIBRARY_VERSION3_LIST="
1685     gmp
1686     liblensfun
1687     libopencore_amrnb
1688     libopencore_amrwb
1689     libvmaf
1690     libvo_amrwbenc
1691     mbedtls
1692     rkmpp
1693 "
1694
1695 EXTERNAL_LIBRARY_GPLV3_LIST="
1696     libsmbclient
1697 "
1698
1699 EXTERNAL_LIBRARY_LIST="
1700     $EXTERNAL_LIBRARY_GPL_LIST
1701     $EXTERNAL_LIBRARY_NONFREE_LIST
1702     $EXTERNAL_LIBRARY_VERSION3_LIST
1703     $EXTERNAL_LIBRARY_GPLV3_LIST
1704     chromaprint
1705     gcrypt
1706     gnutls
1707     jni
1708     ladspa
1709     libaom
1710     libass
1711     libbluray
1712     libbs2b
1713     libcaca
1714     libcelt
1715     libcodec2
1716     libdav1d
1717     libdc1394
1718     libdrm
1719     libflite
1720     libfontconfig
1721     libfreetype
1722     libfribidi
1723     libgme
1724     libgsm
1725     libiec61883
1726     libilbc
1727     libjack
1728     libklvanc
1729     libkvazaar
1730     libmodplug
1731     libmp3lame
1732     libmysofa
1733     libopencv
1734     libopenh264
1735     libopenjpeg
1736     libopenmpt
1737     libopus
1738     libpulse
1739     librsvg
1740     librtmp
1741     libshine
1742     libsmbclient
1743     libsnappy
1744     libsoxr
1745     libspeex
1746     libsrt
1747     libssh
1748     libtensorflow
1749     libtesseract
1750     libtheora
1751     libtwolame
1752     libv4l2
1753     libvorbis
1754     libvpx
1755     libwavpack
1756     libwebp
1757     libxml2
1758     libzimg
1759     libzmq
1760     libzvbi
1761     lv2
1762     mediacodec
1763     openal
1764     opengl
1765     vapoursynth
1766 "
1767
1768 HWACCEL_AUTODETECT_LIBRARY_LIST="
1769     amf
1770     audiotoolbox
1771     crystalhd
1772     cuda
1773     cuvid
1774     d3d11va
1775     dxva2
1776     ffnvcodec
1777     nvdec
1778     nvenc
1779     vaapi
1780     vdpau
1781     videotoolbox
1782     v4l2_m2m
1783     xvmc
1784 "
1785
1786 # catchall list of things that require external libs to link
1787 EXTRALIBS_LIST="
1788     cpu_init
1789     cws2fws
1790 "
1791
1792 HWACCEL_LIBRARY_NONFREE_LIST="
1793     cuda_sdk
1794     libnpp
1795 "
1796
1797 HWACCEL_LIBRARY_LIST="
1798     $HWACCEL_LIBRARY_NONFREE_LIST
1799     libmfx
1800     mmal
1801     omx
1802     opencl
1803 "
1804
1805 DOCUMENT_LIST="
1806     doc
1807     htmlpages
1808     manpages
1809     podpages
1810     txtpages
1811 "
1812
1813 FEATURE_LIST="
1814     ftrapv
1815     gray
1816     hardcoded_tables
1817     omx_rpi
1818     runtime_cpudetect
1819     safe_bitstream_reader
1820     shared
1821     small
1822     static
1823     swscale_alpha
1824 "
1825
1826 # this list should be kept in linking order
1827 LIBRARY_LIST="
1828     avdevice
1829     avfilter
1830     swscale
1831     postproc
1832     avformat
1833     avcodec
1834     swresample
1835     avresample
1836     avutil
1837 "
1838
1839 LICENSE_LIST="
1840     gpl
1841     nonfree
1842     version3
1843 "
1844
1845 PROGRAM_LIST="
1846     ffplay
1847     ffprobe
1848     ffmpeg
1849 "
1850
1851 SUBSYSTEM_LIST="
1852     dct
1853     dwt
1854     error_resilience
1855     faan
1856     fast_unaligned
1857     fft
1858     lsp
1859     lzo
1860     mdct
1861     pixelutils
1862     network
1863     rdft
1864 "
1865
1866 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1867 CONFIG_LIST="
1868     $DOCUMENT_LIST
1869     $EXAMPLE_LIST
1870     $EXTERNAL_LIBRARY_LIST
1871     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1872     $HWACCEL_LIBRARY_LIST
1873     $HWACCEL_AUTODETECT_LIBRARY_LIST
1874     $FEATURE_LIST
1875     $LICENSE_LIST
1876     $LIBRARY_LIST
1877     $PROGRAM_LIST
1878     $SUBSYSTEM_LIST
1879     autodetect
1880     fontconfig
1881     linux_perf
1882     memory_poisoning
1883     neon_clobber_test
1884     ossfuzz
1885     pic
1886     thumb
1887     valgrind_backtrace
1888     xmm_clobber_test
1889     $COMPONENT_LIST
1890 "
1891
1892 THREADS_LIST="
1893     pthreads
1894     os2threads
1895     w32threads
1896 "
1897
1898 ATOMICS_LIST="
1899     atomics_gcc
1900     atomics_suncc
1901     atomics_win32
1902 "
1903
1904 AUTODETECT_LIBS="
1905     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1906     $HWACCEL_AUTODETECT_LIBRARY_LIST
1907     $THREADS_LIST
1908 "
1909
1910 ARCH_LIST="
1911     aarch64
1912     alpha
1913     arm
1914     avr32
1915     avr32_ap
1916     avr32_uc
1917     bfin
1918     ia64
1919     m68k
1920     mips
1921     mips64
1922     parisc
1923     ppc
1924     ppc64
1925     s390
1926     sh4
1927     sparc
1928     sparc64
1929     tilegx
1930     tilepro
1931     tomi
1932     x86
1933     x86_32
1934     x86_64
1935 "
1936
1937 ARCH_EXT_LIST_ARM="
1938     armv5te
1939     armv6
1940     armv6t2
1941     armv8
1942     neon
1943     vfp
1944     vfpv3
1945     setend
1946 "
1947
1948 ARCH_EXT_LIST_MIPS="
1949     mipsfpu
1950     mips32r2
1951     mips32r5
1952     mips64r2
1953     mips32r6
1954     mips64r6
1955     mipsdsp
1956     mipsdspr2
1957     msa
1958 "
1959
1960 ARCH_EXT_LIST_LOONGSON="
1961     loongson2
1962     loongson3
1963     mmi
1964 "
1965
1966 ARCH_EXT_LIST_X86_SIMD="
1967     aesni
1968     amd3dnow
1969     amd3dnowext
1970     avx
1971     avx2
1972     avx512
1973     fma3
1974     fma4
1975     mmx
1976     mmxext
1977     sse
1978     sse2
1979     sse3
1980     sse4
1981     sse42
1982     ssse3
1983     xop
1984 "
1985
1986 ARCH_EXT_LIST_PPC="
1987     altivec
1988     dcbzl
1989     ldbrx
1990     power8
1991     ppc4xx
1992     vsx
1993 "
1994
1995 ARCH_EXT_LIST_X86="
1996     $ARCH_EXT_LIST_X86_SIMD
1997     cpunop
1998     i686
1999 "
2000
2001 ARCH_EXT_LIST="
2002     $ARCH_EXT_LIST_ARM
2003     $ARCH_EXT_LIST_PPC
2004     $ARCH_EXT_LIST_X86
2005     $ARCH_EXT_LIST_MIPS
2006     $ARCH_EXT_LIST_LOONGSON
2007 "
2008
2009 ARCH_FEATURES="
2010     aligned_stack
2011     fast_64bit
2012     fast_clz
2013     fast_cmov
2014     local_aligned
2015     simd_align_16
2016     simd_align_32
2017     simd_align_64
2018 "
2019
2020 BUILTIN_LIST="
2021     atomic_cas_ptr
2022     machine_rw_barrier
2023     MemoryBarrier
2024     mm_empty
2025     rdtsc
2026     sem_timedwait
2027     sync_val_compare_and_swap
2028 "
2029 HAVE_LIST_CMDLINE="
2030     inline_asm
2031     symver
2032     x86asm
2033 "
2034
2035 HAVE_LIST_PUB="
2036     bigendian
2037     fast_unaligned
2038 "
2039
2040 HEADERS_LIST="
2041     arpa_inet_h
2042     asm_types_h
2043     cdio_paranoia_h
2044     cdio_paranoia_paranoia_h
2045     cuda_h
2046     dispatch_dispatch_h
2047     dev_bktr_ioctl_bt848_h
2048     dev_bktr_ioctl_meteor_h
2049     dev_ic_bt8xx_h
2050     dev_video_bktr_ioctl_bt848_h
2051     dev_video_meteor_ioctl_meteor_h
2052     direct_h
2053     dirent_h
2054     dxgidebug_h
2055     dxva_h
2056     ES2_gl_h
2057     gsm_h
2058     io_h
2059     linux_perf_event_h
2060     machine_ioctl_bt848_h
2061     machine_ioctl_meteor_h
2062     malloc_h
2063     opencv2_core_core_c_h
2064     OpenGL_gl3_h
2065     poll_h
2066     sys_param_h
2067     sys_resource_h
2068     sys_select_h
2069     sys_soundcard_h
2070     sys_time_h
2071     sys_un_h
2072     sys_videoio_h
2073     termios_h
2074     udplite_h
2075     unistd_h
2076     valgrind_valgrind_h
2077     windows_h
2078     winsock2_h
2079 "
2080
2081 INTRINSICS_LIST="
2082     intrinsics_neon
2083 "
2084
2085 COMPLEX_FUNCS="
2086     cabs
2087     cexp
2088 "
2089
2090 MATH_FUNCS="
2091     atanf
2092     atan2f
2093     cbrt
2094     cbrtf
2095     copysign
2096     cosf
2097     erf
2098     exp2
2099     exp2f
2100     expf
2101     hypot
2102     isfinite
2103     isinf
2104     isnan
2105     ldexpf
2106     llrint
2107     llrintf
2108     log2
2109     log2f
2110     log10f
2111     lrint
2112     lrintf
2113     powf
2114     rint
2115     round
2116     roundf
2117     sinf
2118     trunc
2119     truncf
2120 "
2121
2122 SYSTEM_FEATURES="
2123     dos_paths
2124     libc_msvcrt
2125     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2126     section_data_rel_ro
2127     threads
2128     uwp
2129     winrt
2130 "
2131
2132 SYSTEM_FUNCS="
2133     access
2134     aligned_malloc
2135     arc4random
2136     clock_gettime
2137     closesocket
2138     CommandLineToArgvW
2139     fcntl
2140     getaddrinfo
2141     gethrtime
2142     getopt
2143     GetProcessAffinityMask
2144     GetProcessMemoryInfo
2145     GetProcessTimes
2146     getrusage
2147     GetSystemTimeAsFileTime
2148     gettimeofday
2149     glob
2150     glXGetProcAddress
2151     gmtime_r
2152     inet_aton
2153     isatty
2154     kbhit
2155     localtime_r
2156     lstat
2157     lzo1x_999_compress
2158     mach_absolute_time
2159     MapViewOfFile
2160     memalign
2161     mkstemp
2162     mmap
2163     mprotect
2164     nanosleep
2165     PeekNamedPipe
2166     posix_memalign
2167     pthread_cancel
2168     sched_getaffinity
2169     SecItemImport
2170     SetConsoleTextAttribute
2171     SetConsoleCtrlHandler
2172     setmode
2173     setrlimit
2174     Sleep
2175     strerror_r
2176     sysconf
2177     sysctl
2178     usleep
2179     UTGetOSTypeFromString
2180     VirtualAlloc
2181     wglGetProcAddress
2182 "
2183
2184 SYSTEM_LIBRARIES="
2185     bcrypt
2186     vaapi_drm
2187     vaapi_x11
2188     vdpau_x11
2189 "
2190
2191 TOOLCHAIN_FEATURES="
2192     as_arch_directive
2193     as_dn_directive
2194     as_fpu_directive
2195     as_func
2196     as_object_arch
2197     asm_mod_q
2198     blocks_extension
2199     ebp_available
2200     ebx_available
2201     gnu_as
2202     gnu_windres
2203     ibm_asm
2204     inline_asm_direct_symbol_refs
2205     inline_asm_labels
2206     inline_asm_nonlocal_labels
2207     pragma_deprecated
2208     rsync_contimeout
2209     symver_asm_label
2210     symver_gnu_asm
2211     vfp_args
2212     xform_asm
2213     xmm_clobbers
2214 "
2215
2216 TYPES_LIST="
2217     kCMVideoCodecType_HEVC
2218     socklen_t
2219     struct_addrinfo
2220     struct_group_source_req
2221     struct_ip_mreq_source
2222     struct_ipv6_mreq
2223     struct_msghdr_msg_flags
2224     struct_pollfd
2225     struct_rusage_ru_maxrss
2226     struct_sctp_event_subscribe
2227     struct_sockaddr_in6
2228     struct_sockaddr_sa_len
2229     struct_sockaddr_storage
2230     struct_stat_st_mtim_tv_nsec
2231     struct_v4l2_frmivalenum_discrete
2232 "
2233
2234 HAVE_LIST="
2235     $ARCH_EXT_LIST
2236     $(add_suffix _external $ARCH_EXT_LIST)
2237     $(add_suffix _inline   $ARCH_EXT_LIST)
2238     $ARCH_FEATURES
2239     $BUILTIN_LIST
2240     $COMPLEX_FUNCS
2241     $HAVE_LIST_CMDLINE
2242     $HAVE_LIST_PUB
2243     $HEADERS_LIST
2244     $INTRINSICS_LIST
2245     $MATH_FUNCS
2246     $SYSTEM_FEATURES
2247     $SYSTEM_FUNCS
2248     $SYSTEM_LIBRARIES
2249     $THREADS_LIST
2250     $TOOLCHAIN_FEATURES
2251     $TYPES_LIST
2252     makeinfo
2253     makeinfo_html
2254     opencl_d3d11
2255     opencl_drm_arm
2256     opencl_drm_beignet
2257     opencl_dxva2
2258     opencl_vaapi_beignet
2259     opencl_vaapi_intel_media
2260     perl
2261     pod2man
2262     texi2html
2263 "
2264
2265 # options emitted with CONFIG_ prefix but not available on the command line
2266 CONFIG_EXTRA="
2267     aandcttables
2268     ac3dsp
2269     adts_header
2270     audio_frame_queue
2271     audiodsp
2272     blockdsp
2273     bswapdsp
2274     cabac
2275     cbs
2276     cbs_av1
2277     cbs_h264
2278     cbs_h265
2279     cbs_jpeg
2280     cbs_mpeg2
2281     cbs_vp9
2282     dirac_parse
2283     dnn
2284     dvprofile
2285     exif
2286     faandct
2287     faanidct
2288     fdctdsp
2289     flacdsp
2290     fmtconvert
2291     frame_thread_encoder
2292     g722dsp
2293     golomb
2294     gplv3
2295     h263dsp
2296     h264chroma
2297     h264dsp
2298     h264parse
2299     h264pred
2300     h264qpel
2301     hevcparse
2302     hpeldsp
2303     huffman
2304     huffyuvdsp
2305     huffyuvencdsp
2306     idctdsp
2307     iirfilter
2308     mdct15
2309     intrax8
2310     iso_media
2311     ividsp
2312     jpegtables
2313     lgplv3
2314     libx262
2315     llauddsp
2316     llviddsp
2317     llvidencdsp
2318     lpc
2319     lzf
2320     me_cmp
2321     mpeg_er
2322     mpegaudio
2323     mpegaudiodsp
2324     mpegaudioheader
2325     mpegvideo
2326     mpegvideoenc
2327     mss34dsp
2328     pixblockdsp
2329     qpeldsp
2330     qsv
2331     qsvdec
2332     qsvenc
2333     qsvvpp
2334     rangecoder
2335     riffdec
2336     riffenc
2337     rtpdec
2338     rtpenc_chain
2339     rv34dsp
2340     scene_sad
2341     sinewin
2342     snappy
2343     srtp
2344     startcode
2345     texturedsp
2346     texturedspenc
2347     tpeldsp
2348     vaapi_1
2349     vaapi_encode
2350     vc1dsp
2351     videodsp
2352     vp3dsp
2353     vp56dsp
2354     vp8dsp
2355     wma_freqs
2356     wmv2dsp
2357 "
2358
2359 CMDLINE_SELECT="
2360     $ARCH_EXT_LIST
2361     $CONFIG_LIST
2362     $HAVE_LIST_CMDLINE
2363     $THREADS_LIST
2364     asm
2365     cross_compile
2366     debug
2367     extra_warnings
2368     logging
2369     lto
2370     optimizations
2371     rpath
2372     stripping
2373 "
2374
2375 PATHS_LIST="
2376     bindir
2377     datadir
2378     docdir
2379     incdir
2380     libdir
2381     mandir
2382     pkgconfigdir
2383     prefix
2384     shlibdir
2385     install_name_dir
2386 "
2387
2388 CMDLINE_SET="
2389     $PATHS_LIST
2390     ar
2391     arch
2392     as
2393     assert_level
2394     build_suffix
2395     cc
2396     objcc
2397     cpu
2398     cross_prefix
2399     custom_allocator
2400     cxx
2401     dep_cc
2402     doxygen
2403     env
2404     extra_version
2405     gas
2406     host_cc
2407     host_cflags
2408     host_extralibs
2409     host_ld
2410     host_ldflags
2411     host_os
2412     ignore_tests
2413     install
2414     ld
2415     ln_s
2416     logfile
2417     malloc_prefix
2418     nm
2419     optflags
2420     nvcc
2421     nvccflags
2422     pkg_config
2423     pkg_config_flags
2424     progs_suffix
2425     random_seed
2426     ranlib
2427     samples
2428     strip
2429     sws_max_filter_size
2430     sysinclude
2431     sysroot
2432     target_exec
2433     target_os
2434     target_path
2435     target_samples
2436     tempprefix
2437     toolchain
2438     valgrind
2439     windres
2440     x86asmexe
2441 "
2442
2443 CMDLINE_APPEND="
2444     extra_cflags
2445     extra_cxxflags
2446     extra_objcflags
2447     host_cppflags
2448 "
2449
2450 # code dependency declarations
2451
2452 # architecture extensions
2453
2454 armv5te_deps="arm"
2455 armv6_deps="arm"
2456 armv6t2_deps="arm"
2457 armv8_deps="aarch64"
2458 neon_deps_any="aarch64 arm"
2459 intrinsics_neon_deps="neon"
2460 vfp_deps_any="aarch64 arm"
2461 vfpv3_deps="vfp"
2462 setend_deps="arm"
2463
2464 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2465
2466 altivec_deps="ppc"
2467 dcbzl_deps="ppc"
2468 ldbrx_deps="ppc"
2469 ppc4xx_deps="ppc"
2470 vsx_deps="altivec"
2471 power8_deps="vsx"
2472
2473 loongson2_deps="mips"
2474 loongson3_deps="mips"
2475 mips32r2_deps="mips"
2476 mips32r5_deps="mips"
2477 mips32r6_deps="mips"
2478 mips64r2_deps="mips"
2479 mips64r6_deps="mips"
2480 mipsfpu_deps="mips"
2481 mipsdsp_deps="mips"
2482 mipsdspr2_deps="mips"
2483 mmi_deps="mips"
2484 msa_deps="mipsfpu"
2485
2486 cpunop_deps="i686"
2487 x86_64_select="i686"
2488 x86_64_suggest="fast_cmov"
2489
2490 amd3dnow_deps="mmx"
2491 amd3dnowext_deps="amd3dnow"
2492 i686_deps="x86"
2493 mmx_deps="x86"
2494 mmxext_deps="mmx"
2495 sse_deps="mmxext"
2496 sse2_deps="sse"
2497 sse3_deps="sse2"
2498 ssse3_deps="sse3"
2499 sse4_deps="ssse3"
2500 sse42_deps="sse4"
2501 aesni_deps="sse42"
2502 avx_deps="sse42"
2503 xop_deps="avx"
2504 fma3_deps="avx"
2505 fma4_deps="avx"
2506 avx2_deps="avx"
2507 avx512_deps="avx2"
2508
2509 mmx_external_deps="x86asm"
2510 mmx_inline_deps="inline_asm x86"
2511 mmx_suggest="mmx_external mmx_inline"
2512
2513 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2514     eval dep=\$${ext}_deps
2515     eval ${ext}_external_deps='"${dep}_external"'
2516     eval ${ext}_inline_deps='"${dep}_inline"'
2517     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2518 done
2519
2520 aligned_stack_if_any="aarch64 ppc x86"
2521 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2522 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2523 fast_unaligned_if_any="aarch64 ppc x86"
2524 simd_align_16_if_any="altivec neon sse"
2525 simd_align_32_if_any="avx"
2526 simd_align_64_if_any="avx512"
2527
2528 # system capabilities
2529 linux_perf_deps="linux_perf_event_h"
2530 symver_if_any="symver_asm_label symver_gnu_asm"
2531 valgrind_backtrace_conflict="optimizations"
2532 valgrind_backtrace_deps="valgrind_valgrind_h"
2533
2534 # threading support
2535 atomics_gcc_if="sync_val_compare_and_swap"
2536 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2537 atomics_win32_if="MemoryBarrier"
2538 atomics_native_if_any="$ATOMICS_LIST"
2539 w32threads_deps="atomics_native"
2540 threads_if_any="$THREADS_LIST"
2541
2542 # subsystems
2543 cbs_av1_select="cbs"
2544 cbs_h264_select="cbs golomb"
2545 cbs_h265_select="cbs golomb"
2546 cbs_jpeg_select="cbs"
2547 cbs_mpeg2_select="cbs"
2548 cbs_vp9_select="cbs"
2549 dct_select="rdft"
2550 dirac_parse_select="golomb"
2551 dnn_suggest="libtensorflow"
2552 error_resilience_select="me_cmp"
2553 faandct_deps="faan"
2554 faandct_select="fdctdsp"
2555 faanidct_deps="faan"
2556 faanidct_select="idctdsp"
2557 h264dsp_select="startcode"
2558 hevcparse_select="golomb"
2559 frame_thread_encoder_deps="encoders threads"
2560 intrax8_select="blockdsp idctdsp"
2561 mdct_select="fft"
2562 mdct15_select="fft"
2563 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2564 mpeg_er_select="error_resilience"
2565 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2566 mpegaudiodsp_select="dct"
2567 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2568 mpegvideoenc_select="aandcttables me_cmp mpegvideo pixblockdsp qpeldsp"
2569 vc1dsp_select="h264chroma qpeldsp startcode"
2570 rdft_select="fft"
2571
2572 # decoders / encoders
2573 aac_decoder_select="adts_header mdct15 mdct sinewin"
2574 aac_fixed_decoder_select="adts_header mdct sinewin"
2575 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2576 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2577 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2578 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2579 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2580 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2581 adpcm_g722_decoder_select="g722dsp"
2582 adpcm_g722_encoder_select="g722dsp"
2583 aic_decoder_select="golomb idctdsp"
2584 alac_encoder_select="lpc"
2585 als_decoder_select="bswapdsp"
2586 amrnb_decoder_select="lsp"
2587 amrwb_decoder_select="lsp"
2588 amv_decoder_select="sp5x_decoder exif"
2589 amv_encoder_select="jpegtables mpegvideoenc"
2590 ape_decoder_select="bswapdsp llauddsp"
2591 apng_decoder_deps="zlib"
2592 apng_encoder_deps="zlib"
2593 apng_encoder_select="llvidencdsp"
2594 aptx_decoder_select="audio_frame_queue"
2595 aptx_encoder_select="audio_frame_queue"
2596 aptx_hd_decoder_select="audio_frame_queue"
2597 aptx_hd_encoder_select="audio_frame_queue"
2598 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2599 asv1_encoder_select="aandcttables bswapdsp fdctdsp pixblockdsp"
2600 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2601 asv2_encoder_select="aandcttables bswapdsp fdctdsp pixblockdsp"
2602 atrac1_decoder_select="mdct sinewin"
2603 atrac3_decoder_select="mdct"
2604 atrac3p_decoder_select="mdct sinewin"
2605 atrac9_decoder_select="mdct"
2606 avrn_decoder_select="exif jpegtables"
2607 bink_decoder_select="blockdsp hpeldsp"
2608 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2609 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2610 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2611 clearvideo_decoder_select="idctdsp"
2612 cllc_decoder_select="bswapdsp"
2613 comfortnoise_encoder_select="lpc"
2614 cook_decoder_select="audiodsp mdct sinewin"
2615 cscd_decoder_select="lzo"
2616 cscd_decoder_suggest="zlib"
2617 dca_decoder_select="mdct"
2618 dds_decoder_select="texturedsp"
2619 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2620 dnxhd_decoder_select="blockdsp idctdsp"
2621 dnxhd_encoder_select="blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2622 dolby_e_decoder_select="mdct"
2623 dvvideo_decoder_select="dvprofile idctdsp"
2624 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2625 dxa_decoder_deps="zlib"
2626 dxv_decoder_select="lzf texturedsp"
2627 eac3_decoder_select="ac3_decoder"
2628 eac3_encoder_select="ac3_encoder"
2629 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2630 eatgq_decoder_select="aandcttables"
2631 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2632 exr_decoder_deps="zlib"
2633 ffv1_decoder_select="rangecoder"
2634 ffv1_encoder_select="rangecoder"
2635 ffvhuff_decoder_select="huffyuv_decoder"
2636 ffvhuff_encoder_select="huffyuv_encoder"
2637 fic_decoder_select="golomb"
2638 flac_decoder_select="flacdsp"
2639 flac_encoder_select="bswapdsp flacdsp lpc"
2640 flashsv2_decoder_deps="zlib"
2641 flashsv2_encoder_deps="zlib"
2642 flashsv_decoder_deps="zlib"
2643 flashsv_encoder_deps="zlib"
2644 flv_decoder_select="h263_decoder"
2645 flv_encoder_select="h263_encoder"
2646 fourxm_decoder_select="blockdsp bswapdsp"
2647 fraps_decoder_select="bswapdsp huffman"
2648 g2m_decoder_deps="zlib"
2649 g2m_decoder_select="blockdsp idctdsp jpegtables"
2650 g729_decoder_select="audiodsp"
2651 h261_decoder_select="mpegvideo"
2652 h261_encoder_select="mpegvideoenc"
2653 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2654 h263_encoder_select="h263dsp mpegvideoenc"
2655 h263i_decoder_select="h263_decoder"
2656 h263p_decoder_select="h263_decoder"
2657 h263p_encoder_select="h263_encoder"
2658 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2659 h264_decoder_suggest="error_resilience"
2660 hap_decoder_select="snappy texturedsp"
2661 hap_encoder_deps="libsnappy"
2662 hap_encoder_select="texturedspenc"
2663 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2664 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2665 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2666 iac_decoder_select="imc_decoder"
2667 imc_decoder_select="bswapdsp fft mdct sinewin"
2668 indeo3_decoder_select="hpeldsp"
2669 indeo4_decoder_select="ividsp"
2670 indeo5_decoder_select="ividsp"
2671 interplay_video_decoder_select="hpeldsp"
2672 jpegls_decoder_select="mjpeg_decoder"
2673 jv_decoder_select="blockdsp"
2674 lagarith_decoder_select="llviddsp"
2675 ljpeg_encoder_select="idctdsp jpegtables mpegvideoenc"
2676 magicyuv_decoder_select="llviddsp"
2677 magicyuv_encoder_select="llvidencdsp"
2678 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2679 metasound_decoder_select="lsp mdct sinewin"
2680 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2681 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2682 mjpeg_encoder_select="jpegtables mpegvideoenc"
2683 mjpegb_decoder_select="mjpeg_decoder"
2684 mlp_decoder_select="mlp_parser"
2685 mlp_encoder_select="lpc"
2686 motionpixels_decoder_select="bswapdsp"
2687 mp1_decoder_select="mpegaudio"
2688 mp1float_decoder_select="mpegaudio"
2689 mp2_decoder_select="mpegaudio"
2690 mp2float_decoder_select="mpegaudio"
2691 mp3_decoder_select="mpegaudio"
2692 mp3adu_decoder_select="mpegaudio"
2693 mp3adufloat_decoder_select="mpegaudio"
2694 mp3float_decoder_select="mpegaudio"
2695 mp3on4_decoder_select="mpegaudio"
2696 mp3on4float_decoder_select="mpegaudio"
2697 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2698 mpc8_decoder_select="mpegaudiodsp"
2699 mpegvideo_decoder_select="mpegvideo"
2700 mpeg1video_decoder_select="mpegvideo"
2701 mpeg1video_encoder_select="mpegvideoenc h263dsp"
2702 mpeg2video_decoder_select="mpegvideo"
2703 mpeg2video_encoder_select="mpegvideoenc h263dsp"
2704 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2705 mpeg4_encoder_select="h263_encoder"
2706 msa1_decoder_select="mss34dsp"
2707 mscc_decoder_deps="zlib"
2708 msmpeg4v1_decoder_select="h263_decoder"
2709 msmpeg4v2_decoder_select="h263_decoder"
2710 msmpeg4v2_encoder_select="h263_encoder"
2711 msmpeg4v3_decoder_select="h263_decoder"
2712 msmpeg4v3_encoder_select="h263_encoder"
2713 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2714 mts2_decoder_select="mss34dsp"
2715 mwsc_decoder_deps="zlib"
2716 mxpeg_decoder_select="mjpeg_decoder"
2717 nellymoser_decoder_select="mdct sinewin"
2718 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2719 nuv_decoder_select="idctdsp lzo"
2720 on2avc_decoder_select="mdct"
2721 opus_decoder_deps="swresample"
2722 opus_decoder_select="mdct15"
2723 opus_encoder_select="audio_frame_queue mdct15"
2724 png_decoder_deps="zlib"
2725 png_encoder_deps="zlib"
2726 png_encoder_select="llvidencdsp"
2727 prores_decoder_select="blockdsp idctdsp"
2728 prores_encoder_select="fdctdsp"
2729 qcelp_decoder_select="lsp"
2730 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2731 ra_144_decoder_select="audiodsp"
2732 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2733 ralf_decoder_select="golomb"
2734 rasc_decoder_deps="zlib"
2735 rawvideo_decoder_select="bswapdsp"
2736 rscc_decoder_deps="zlib"
2737 rtjpeg_decoder_select="me_cmp"
2738 rv10_decoder_select="h263_decoder"
2739 rv10_encoder_select="h263_encoder"
2740 rv20_decoder_select="h263_decoder"
2741 rv20_encoder_select="h263_encoder"
2742 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2743 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2744 screenpresso_decoder_deps="zlib"
2745 shorten_decoder_select="bswapdsp"
2746 sipr_decoder_select="lsp"
2747 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2748 snow_encoder_select="dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2749 sonic_decoder_select="golomb rangecoder"
2750 sonic_encoder_select="golomb rangecoder"
2751 sonic_ls_encoder_select="golomb rangecoder"
2752 sp5x_decoder_select="mjpeg_decoder"
2753 speedhq_decoder_select="mpegvideo"
2754 srgc_decoder_deps="zlib"
2755 svq1_decoder_select="hpeldsp"
2756 svq1_encoder_select="hpeldsp me_cmp mpegvideoenc"
2757 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2758 svq3_decoder_suggest="zlib"
2759 tak_decoder_select="audiodsp"
2760 tdsc_decoder_deps="zlib"
2761 tdsc_decoder_select="mjpeg_decoder"
2762 theora_decoder_select="vp3_decoder"
2763 thp_decoder_select="mjpeg_decoder"
2764 tiff_decoder_suggest="zlib lzma"
2765 tiff_encoder_suggest="zlib"
2766 truehd_decoder_select="mlp_parser"
2767 truehd_encoder_select="lpc"
2768 truemotion2_decoder_select="bswapdsp"
2769 truespeech_decoder_select="bswapdsp"
2770 tscc_decoder_deps="zlib"
2771 twinvq_decoder_select="mdct lsp sinewin"
2772 txd_decoder_select="texturedsp"
2773 utvideo_decoder_select="bswapdsp llviddsp"
2774 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2775 vble_decoder_select="llviddsp"
2776 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2777 vc1image_decoder_select="vc1_decoder"
2778 vorbis_decoder_select="mdct"
2779 vorbis_encoder_select="audio_frame_queue mdct"
2780 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2781 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2782 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2783 vp6a_decoder_select="vp6_decoder"
2784 vp6f_decoder_select="vp6_decoder"
2785 vp7_decoder_select="h264pred videodsp vp8dsp"
2786 vp8_decoder_select="h264pred videodsp vp8dsp"
2787 vp9_decoder_select="videodsp vp9_parser vp9_superframe_split_bsf"
2788 wcmv_decoder_deps="zlib"
2789 webp_decoder_select="vp8_decoder exif"
2790 wmalossless_decoder_select="llauddsp"
2791 wmapro_decoder_select="mdct sinewin wma_freqs"
2792 wmav1_decoder_select="mdct sinewin wma_freqs"
2793 wmav1_encoder_select="mdct sinewin wma_freqs"
2794 wmav2_decoder_select="mdct sinewin wma_freqs"
2795 wmav2_encoder_select="mdct sinewin wma_freqs"
2796 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2797 wmv1_decoder_select="h263_decoder"
2798 wmv1_encoder_select="h263_encoder"
2799 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2800 wmv2_encoder_select="h263_encoder wmv2dsp"
2801 wmv3_decoder_select="vc1_decoder"
2802 wmv3image_decoder_select="wmv3_decoder"
2803 xma1_decoder_select="wmapro_decoder"
2804 xma2_decoder_select="wmapro_decoder"
2805 zerocodec_decoder_deps="zlib"
2806 zlib_decoder_deps="zlib"
2807 zlib_encoder_deps="zlib"
2808 zmbv_decoder_deps="zlib"
2809 zmbv_encoder_deps="zlib"
2810
2811 # hardware accelerators
2812 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2813 cuda_deps="ffnvcodec"
2814 cuvid_deps="ffnvcodec"
2815 d3d11va_deps="dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2816 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2817 ffnvcodec_deps_any="libdl LoadLibrary"
2818 nvdec_deps="ffnvcodec"
2819 vaapi_x11_deps="xlib"
2820 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2821 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2822 xvmc_deps="X11_extensions_XvMClib_h"
2823
2824 h263_vaapi_hwaccel_deps="vaapi"
2825 h263_vaapi_hwaccel_select="h263_decoder"
2826 h263_videotoolbox_hwaccel_deps="videotoolbox"
2827 h263_videotoolbox_hwaccel_select="h263_decoder"
2828 h264_d3d11va_hwaccel_deps="d3d11va"
2829 h264_d3d11va_hwaccel_select="h264_decoder"
2830 h264_d3d11va2_hwaccel_deps="d3d11va"
2831 h264_d3d11va2_hwaccel_select="h264_decoder"
2832 h264_dxva2_hwaccel_deps="dxva2"
2833 h264_dxva2_hwaccel_select="h264_decoder"
2834 h264_nvdec_hwaccel_deps="nvdec"
2835 h264_nvdec_hwaccel_select="h264_decoder"
2836 h264_vaapi_hwaccel_deps="vaapi"
2837 h264_vaapi_hwaccel_select="h264_decoder"
2838 h264_vdpau_hwaccel_deps="vdpau"
2839 h264_vdpau_hwaccel_select="h264_decoder"
2840 h264_videotoolbox_hwaccel_deps="videotoolbox"
2841 h264_videotoolbox_hwaccel_select="h264_decoder"
2842 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2843 hevc_d3d11va_hwaccel_select="hevc_decoder"
2844 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2845 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2846 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2847 hevc_dxva2_hwaccel_select="hevc_decoder"
2848 hevc_nvdec_hwaccel_deps="nvdec"
2849 hevc_nvdec_hwaccel_select="hevc_decoder"
2850 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2851 hevc_vaapi_hwaccel_select="hevc_decoder"
2852 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2853 hevc_vdpau_hwaccel_select="hevc_decoder"
2854 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2855 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2856 mjpeg_nvdec_hwaccel_deps="nvdec"
2857 mjpeg_nvdec_hwaccel_select="mjpeg_decoder"
2858 mjpeg_vaapi_hwaccel_deps="vaapi"
2859 mjpeg_vaapi_hwaccel_select="mjpeg_decoder"
2860 mpeg_xvmc_hwaccel_deps="xvmc"
2861 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2862 mpeg1_nvdec_hwaccel_deps="nvdec"
2863 mpeg1_nvdec_hwaccel_select="mpeg1video_decoder"
2864 mpeg1_vdpau_hwaccel_deps="vdpau"
2865 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2866 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2867 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2868 mpeg1_xvmc_hwaccel_deps="xvmc"
2869 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2870 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2871 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2872 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2873 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2874 mpeg2_dxva2_hwaccel_deps="dxva2"
2875 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2876 mpeg2_nvdec_hwaccel_deps="nvdec"
2877 mpeg2_nvdec_hwaccel_select="mpeg2video_decoder"
2878 mpeg2_vaapi_hwaccel_deps="vaapi"
2879 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2880 mpeg2_vdpau_hwaccel_deps="vdpau"
2881 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2882 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2883 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2884 mpeg2_xvmc_hwaccel_deps="xvmc"
2885 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2886 mpeg4_nvdec_hwaccel_deps="nvdec"
2887 mpeg4_nvdec_hwaccel_select="mpeg4_decoder"
2888 mpeg4_vaapi_hwaccel_deps="vaapi"
2889 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2890 mpeg4_vdpau_hwaccel_deps="vdpau"
2891 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2892 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2893 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2894 vc1_d3d11va_hwaccel_deps="d3d11va"
2895 vc1_d3d11va_hwaccel_select="vc1_decoder"
2896 vc1_d3d11va2_hwaccel_deps="d3d11va"
2897 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2898 vc1_dxva2_hwaccel_deps="dxva2"
2899 vc1_dxva2_hwaccel_select="vc1_decoder"
2900 vc1_nvdec_hwaccel_deps="nvdec"
2901 vc1_nvdec_hwaccel_select="vc1_decoder"
2902 vc1_vaapi_hwaccel_deps="vaapi"
2903 vc1_vaapi_hwaccel_select="vc1_decoder"
2904 vc1_vdpau_hwaccel_deps="vdpau"
2905 vc1_vdpau_hwaccel_select="vc1_decoder"
2906 vp8_nvdec_hwaccel_deps="nvdec"
2907 vp8_nvdec_hwaccel_select="vp8_decoder"
2908 vp8_vaapi_hwaccel_deps="vaapi"
2909 vp8_vaapi_hwaccel_select="vp8_decoder"
2910 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2911 vp9_d3d11va_hwaccel_select="vp9_decoder"
2912 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2913 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2914 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2915 vp9_dxva2_hwaccel_select="vp9_decoder"
2916 vp9_nvdec_hwaccel_deps="nvdec"
2917 vp9_nvdec_hwaccel_select="vp9_decoder"
2918 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2919 vp9_vaapi_hwaccel_select="vp9_decoder"
2920 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2921 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2922 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2923 wmv3_nvdec_hwaccel_select="vc1_nvdec_hwaccel"
2924 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2925 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2926
2927 # hardware-accelerated codecs
2928 omx_deps="libdl pthreads"
2929 omx_rpi_select="omx"
2930 qsv_deps="libmfx"
2931 qsvdec_select="qsv"
2932 qsvenc_select="qsv"
2933 qsvvpp_select="qsv"
2934 vaapi_encode_deps="vaapi"
2935 v4l2_m2m_deps="linux_videodev2_h sem_timedwait"
2936
2937 hwupload_cuda_filter_deps="ffnvcodec"
2938 scale_npp_filter_deps="ffnvcodec libnpp"
2939 scale_cuda_filter_deps="cuda_sdk"
2940 thumbnail_cuda_filter_deps="cuda_sdk"
2941 transpose_npp_filter_deps="ffnvcodec libnpp"
2942
2943 amf_deps_any="libdl LoadLibrary"
2944 nvenc_deps="ffnvcodec"
2945 nvenc_deps_any="libdl LoadLibrary"
2946 nvenc_encoder_deps="nvenc"
2947
2948 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
2949 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
2950 h264_amf_encoder_deps="amf"
2951 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2952 h264_cuvid_decoder_deps="cuvid"
2953 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2954 h264_mediacodec_decoder_deps="mediacodec"
2955 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2956 h264_mmal_decoder_deps="mmal"
2957 h264_nvenc_encoder_deps="nvenc"
2958 h264_omx_encoder_deps="omx"
2959 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec"
2960 h264_qsv_encoder_select="qsvenc"
2961 h264_rkmpp_decoder_deps="rkmpp"
2962 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
2963 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
2964 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
2965 h264_v4l2m2m_decoder_select="h264_mp4toannexb_bsf"
2966 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
2967 hevc_amf_encoder_deps="amf"
2968 hevc_cuvid_decoder_deps="cuvid"
2969 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2970 hevc_mediacodec_decoder_deps="mediacodec"
2971 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2972 hevc_nvenc_encoder_deps="nvenc"
2973 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec"
2974 hevc_qsv_encoder_select="hevcparse qsvenc"
2975 hevc_rkmpp_decoder_deps="rkmpp"
2976 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
2977 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2978 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
2979 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
2980 hevc_v4l2m2m_decoder_select="hevc_mp4toannexb_bsf"
2981 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
2982 mjpeg_cuvid_decoder_deps="cuvid"
2983 mjpeg_qsv_encoder_deps="libmfx"
2984 mjpeg_qsv_encoder_select="qsvenc"
2985 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2986 mjpeg_vaapi_encoder_select="cbs_jpeg jpegtables vaapi_encode"
2987 mpeg1_cuvid_decoder_deps="cuvid"
2988 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
2989 mpeg2_crystalhd_decoder_select="crystalhd"
2990 mpeg2_cuvid_decoder_deps="cuvid"
2991 mpeg2_mmal_decoder_deps="mmal"
2992 mpeg2_mediacodec_decoder_deps="mediacodec"
2993 mpeg2_qsv_decoder_select="qsvdec mpegvideo_parser"
2994 mpeg2_qsv_encoder_select="qsvenc"
2995 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
2996 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
2997 mpeg4_crystalhd_decoder_select="crystalhd"
2998 mpeg4_cuvid_decoder_deps="cuvid"
2999 mpeg4_mediacodec_decoder_deps="mediacodec"
3000 mpeg4_mmal_decoder_deps="mmal"
3001 mpeg4_omx_encoder_deps="omx"
3002 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
3003 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
3004 msmpeg4_crystalhd_decoder_select="crystalhd"
3005 nvenc_h264_encoder_select="h264_nvenc_encoder"
3006 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
3007 vc1_crystalhd_decoder_select="crystalhd"
3008 vc1_cuvid_decoder_deps="cuvid"
3009 vc1_mmal_decoder_deps="mmal"
3010 vc1_qsv_decoder_select="qsvdec vc1_parser"
3011 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
3012 vp8_cuvid_decoder_deps="cuvid"
3013 vp8_mediacodec_decoder_deps="mediacodec"
3014 vp8_qsv_decoder_select="qsvdec vp8_parser"
3015 vp8_rkmpp_decoder_deps="rkmpp"
3016 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
3017 vp8_vaapi_encoder_select="vaapi_encode"
3018 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
3019 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
3020 vp9_cuvid_decoder_deps="cuvid"
3021 vp9_mediacodec_decoder_deps="mediacodec"
3022 vp9_rkmpp_decoder_deps="rkmpp"
3023 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
3024 vp9_vaapi_encoder_select="vaapi_encode"
3025 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
3026 wmv3_crystalhd_decoder_select="crystalhd"
3027
3028 # parsers
3029 aac_parser_select="adts_header"
3030 av1_parser_select="cbs_av1"
3031 h264_parser_select="golomb h264dsp h264parse"
3032 hevc_parser_select="hevcparse"
3033 mpegaudio_parser_select="mpegaudioheader"
3034 mpegvideo_parser_select="mpegvideo"
3035 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
3036 vc1_parser_select="vc1dsp"
3037
3038 # bitstream_filters
3039 aac_adtstoasc_bsf_select="adts_header"
3040 av1_metadata_bsf_select="cbs_av1"
3041 eac3_core_bsf_select="ac3_parser"
3042 filter_units_bsf_select="cbs"
3043 h264_metadata_bsf_deps="const_nan"
3044 h264_metadata_bsf_select="cbs_h264"
3045 h264_redundant_pps_bsf_select="cbs_h264"
3046 hevc_metadata_bsf_select="cbs_h265"
3047 mjpeg2jpeg_bsf_select="jpegtables"
3048 mpeg2_metadata_bsf_select="cbs_mpeg2"
3049 trace_headers_bsf_select="cbs"
3050 truehd_core_bsf_select="mlp_parser"
3051 vp9_metadata_bsf_select="cbs_vp9"
3052
3053 # external libraries
3054 aac_at_decoder_deps="audiotoolbox"
3055 aac_at_decoder_select="aac_adtstoasc_bsf"
3056 ac3_at_decoder_deps="audiotoolbox"
3057 ac3_at_decoder_select="ac3_parser"
3058 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
3059 alac_at_decoder_deps="audiotoolbox"
3060 amr_nb_at_decoder_deps="audiotoolbox"
3061 avisynth_deps_any="libdl LoadLibrary"
3062 avisynth_demuxer_deps="avisynth"
3063 avisynth_demuxer_select="riffdec"
3064 eac3_at_decoder_deps="audiotoolbox"
3065 eac3_at_decoder_select="ac3_parser"
3066 gsm_ms_at_decoder_deps="audiotoolbox"
3067 ilbc_at_decoder_deps="audiotoolbox"
3068 mp1_at_decoder_deps="audiotoolbox"
3069 mp2_at_decoder_deps="audiotoolbox"
3070 mp3_at_decoder_deps="audiotoolbox"
3071 mp1_at_decoder_select="mpegaudioheader"
3072 mp2_at_decoder_select="mpegaudioheader"
3073 mp3_at_decoder_select="mpegaudioheader"
3074 pcm_alaw_at_decoder_deps="audiotoolbox"
3075 pcm_mulaw_at_decoder_deps="audiotoolbox"
3076 qdmc_at_decoder_deps="audiotoolbox"
3077 qdm2_at_decoder_deps="audiotoolbox"
3078 aac_at_encoder_deps="audiotoolbox"
3079 aac_at_encoder_select="audio_frame_queue"
3080 alac_at_encoder_deps="audiotoolbox"
3081 alac_at_encoder_select="audio_frame_queue"
3082 ilbc_at_encoder_deps="audiotoolbox"
3083 ilbc_at_encoder_select="audio_frame_queue"
3084 pcm_alaw_at_encoder_deps="audiotoolbox"
3085 pcm_alaw_at_encoder_select="audio_frame_queue"
3086 pcm_mulaw_at_encoder_deps="audiotoolbox"
3087 pcm_mulaw_at_encoder_select="audio_frame_queue"
3088 chromaprint_muxer_deps="chromaprint"
3089 h264_videotoolbox_encoder_deps="pthreads"
3090 h264_videotoolbox_encoder_select="videotoolbox_encoder"
3091 hevc_videotoolbox_encoder_deps="pthreads"
3092 hevc_videotoolbox_encoder_select="videotoolbox_encoder"
3093 libaom_av1_decoder_deps="libaom"
3094 libaom_av1_encoder_deps="libaom"
3095 libaom_av1_encoder_select="extract_extradata_bsf"
3096 libcelt_decoder_deps="libcelt"
3097 libcodec2_decoder_deps="libcodec2"
3098 libcodec2_encoder_deps="libcodec2"
3099 libdav1d_decoder_deps="libdav1d"
3100 libdavs2_decoder_deps="libdavs2"
3101 libfdk_aac_decoder_deps="libfdk_aac"
3102 libfdk_aac_encoder_deps="libfdk_aac"
3103 libfdk_aac_encoder_select="audio_frame_queue"
3104 libgme_demuxer_deps="libgme"
3105 libgsm_decoder_deps="libgsm"
3106 libgsm_encoder_deps="libgsm"
3107 libgsm_ms_decoder_deps="libgsm"
3108 libgsm_ms_encoder_deps="libgsm"
3109 libilbc_decoder_deps="libilbc"
3110 libilbc_encoder_deps="libilbc"
3111 libkvazaar_encoder_deps="libkvazaar"
3112 libmodplug_demuxer_deps="libmodplug"
3113 libmp3lame_encoder_deps="libmp3lame"
3114 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
3115 libopencore_amrnb_decoder_deps="libopencore_amrnb"
3116 libopencore_amrnb_encoder_deps="libopencore_amrnb"
3117 libopencore_amrnb_encoder_select="audio_frame_queue"
3118 libopencore_amrwb_decoder_deps="libopencore_amrwb"
3119 libopenh264_decoder_deps="libopenh264"
3120 libopenh264_decoder_select="h264_mp4toannexb_bsf"
3121 libopenh264_encoder_deps="libopenh264"
3122 libopenjpeg_decoder_deps="libopenjpeg"
3123 libopenjpeg_encoder_deps="libopenjpeg"
3124 libopenmpt_demuxer_deps="libopenmpt"
3125 libopus_decoder_deps="libopus"
3126 libopus_encoder_deps="libopus"
3127 libopus_encoder_select="audio_frame_queue"
3128 librsvg_decoder_deps="librsvg"
3129 libshine_encoder_deps="libshine"
3130 libshine_encoder_select="audio_frame_queue"
3131 libspeex_decoder_deps="libspeex"
3132 libspeex_encoder_deps="libspeex"
3133 libspeex_encoder_select="audio_frame_queue"
3134 libtheora_encoder_deps="libtheora"
3135 libtwolame_encoder_deps="libtwolame"
3136 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
3137 libvorbis_decoder_deps="libvorbis"
3138 libvorbis_encoder_deps="libvorbis libvorbisenc"
3139 libvorbis_encoder_select="audio_frame_queue"
3140 libvpx_vp8_decoder_deps="libvpx"
3141 libvpx_vp8_encoder_deps="libvpx"
3142 libvpx_vp9_decoder_deps="libvpx"
3143 libvpx_vp9_encoder_deps="libvpx"
3144 libwavpack_encoder_deps="libwavpack"
3145 libwavpack_encoder_select="audio_frame_queue"
3146 libwebp_encoder_deps="libwebp"
3147 libwebp_anim_encoder_deps="libwebp"
3148 libx262_encoder_deps="libx262"
3149 libx264_encoder_deps="libx264"
3150 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
3151 libx264rgb_encoder_select="libx264_encoder"
3152 libx265_encoder_deps="libx265"
3153 libxavs_encoder_deps="libxavs"
3154 libxavs2_encoder_deps="libxavs2"
3155 libxvid_encoder_deps="libxvid"
3156 libzvbi_teletext_decoder_deps="libzvbi"
3157 vapoursynth_demuxer_deps="vapoursynth"
3158 videotoolbox_suggest="coreservices"
3159 videotoolbox_deps="corefoundation coremedia corevideo"
3160 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
3161
3162 # demuxers / muxers
3163 ac3_demuxer_select="ac3_parser"
3164 aiff_muxer_select="iso_media"
3165 asf_demuxer_select="riffdec"
3166 asf_o_demuxer_select="riffdec"
3167 asf_muxer_select="riffenc"
3168 asf_stream_muxer_select="asf_muxer"
3169 avi_demuxer_select="iso_media riffdec exif"
3170 avi_muxer_select="riffenc"
3171 caf_demuxer_select="iso_media riffdec"
3172 caf_muxer_select="iso_media"
3173 dash_muxer_select="mp4_muxer"
3174 dash_demuxer_deps="libxml2"
3175 dirac_demuxer_select="dirac_parser"
3176 dts_demuxer_select="dca_parser"
3177 dtshd_demuxer_select="dca_parser"
3178 dv_demuxer_select="dvprofile"
3179 dv_muxer_select="dvprofile"
3180 dxa_demuxer_select="riffdec"
3181 eac3_demuxer_select="ac3_parser"
3182 f4v_muxer_select="mov_muxer"
3183 fifo_muxer_deps="threads"
3184 flac_demuxer_select="flac_parser"
3185 hds_muxer_select="flv_muxer"
3186 hls_muxer_select="mpegts_muxer"
3187 hls_muxer_suggest="gcrypt openssl"
3188 image2_alias_pix_demuxer_select="image2_demuxer"
3189 image2_brender_pix_demuxer_select="image2_demuxer"
3190 ipod_muxer_select="mov_muxer"
3191 ismv_muxer_select="mov_muxer"
3192 ivf_muxer_select="av1_metadata_bsf vp9_superframe_bsf"
3193 matroska_audio_muxer_select="matroska_muxer"
3194 matroska_demuxer_select="iso_media riffdec"
3195 matroska_demuxer_suggest="bzlib lzo zlib"
3196 matroska_muxer_select="iso_media riffenc"
3197 mmf_muxer_select="riffenc"
3198 mov_demuxer_select="iso_media riffdec"
3199 mov_demuxer_suggest="zlib"
3200 mov_muxer_select="iso_media riffenc rtpenc_chain"
3201 mp3_demuxer_select="mpegaudio_parser"
3202 mp3_muxer_select="mpegaudioheader"
3203 mp4_muxer_select="mov_muxer"
3204 mpegts_demuxer_select="iso_media"
3205 mpegts_muxer_select="adts_muxer latm_muxer"
3206 mpegtsraw_demuxer_select="mpegts_demuxer"
3207 mxf_d10_muxer_select="mxf_muxer"
3208 mxf_opatom_muxer_select="mxf_muxer"
3209 nut_muxer_select="riffenc"
3210 nuv_demuxer_select="riffdec"
3211 oga_muxer_select="ogg_muxer"
3212 ogg_demuxer_select="dirac_parse"
3213 ogv_muxer_select="ogg_muxer"
3214 opus_muxer_select="ogg_muxer"
3215 psp_muxer_select="mov_muxer"
3216 rtp_demuxer_select="sdp_demuxer"
3217 rtp_muxer_select="golomb"
3218 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3219 rtsp_demuxer_select="http_protocol rtpdec"
3220 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3221 sap_demuxer_select="sdp_demuxer"
3222 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3223 sdp_demuxer_select="rtpdec"
3224 smoothstreaming_muxer_select="ismv_muxer"
3225 spdif_demuxer_select="adts_header"
3226 spdif_muxer_select="adts_header"
3227 spx_muxer_select="ogg_muxer"
3228 swf_demuxer_suggest="zlib"
3229 tak_demuxer_select="tak_parser"
3230 tg2_muxer_select="mov_muxer"
3231 tgp_muxer_select="mov_muxer"
3232 vobsub_demuxer_select="mpegps_demuxer"
3233 w64_demuxer_select="wav_demuxer"
3234 w64_muxer_select="wav_muxer"
3235 wav_demuxer_select="riffdec"
3236 wav_muxer_select="riffenc"
3237 webm_muxer_select="iso_media riffenc"
3238 webm_dash_manifest_demuxer_select="matroska_demuxer"
3239 wtv_demuxer_select="mpegts_demuxer riffdec"
3240 wtv_muxer_select="mpegts_muxer riffenc"
3241 xmv_demuxer_select="riffdec"
3242 xwma_demuxer_select="riffdec"
3243
3244 # indevs / outdevs
3245 android_camera_indev_deps="android camera2ndk mediandk pthreads"
3246 android_camera_indev_extralibs="-landroid -lcamera2ndk -lmediandk"
3247 alsa_indev_deps="alsa"
3248 alsa_outdev_deps="alsa"
3249 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3250 avfoundation_indev_suggest="coregraphics applicationservices"
3251 avfoundation_indev_extralibs="-framework Foundation"
3252 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3253 caca_outdev_deps="libcaca"
3254 decklink_deps_any="libdl LoadLibrary"
3255 decklink_indev_deps="decklink threads"
3256 decklink_indev_extralibs="-lstdc++"
3257 decklink_outdev_deps="decklink threads"
3258 decklink_outdev_suggest="libklvanc"
3259 decklink_outdev_extralibs="-lstdc++"
3260 libndi_newtek_indev_deps="libndi_newtek"
3261 libndi_newtek_indev_extralibs="-lndi"
3262 libndi_newtek_outdev_deps="libndi_newtek"
3263 libndi_newtek_outdev_extralibs="-lndi"
3264 dshow_indev_deps="IBaseFilter"
3265 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3266 fbdev_indev_deps="linux_fb_h"
3267 fbdev_outdev_deps="linux_fb_h"
3268 gdigrab_indev_deps="CreateDIBSection"
3269 gdigrab_indev_extralibs="-lgdi32"
3270 gdigrab_indev_select="bmp_decoder"
3271 iec61883_indev_deps="libiec61883"
3272 jack_indev_deps="libjack"
3273 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3274 kmsgrab_indev_deps="libdrm"
3275 lavfi_indev_deps="avfilter"
3276 libcdio_indev_deps="libcdio"
3277 libdc1394_indev_deps="libdc1394"
3278 openal_indev_deps="openal"
3279 opengl_outdev_deps="opengl"
3280 opengl_outdev_suggest="sdl2"
3281 oss_indev_deps_any="sys_soundcard_h"
3282 oss_outdev_deps_any="sys_soundcard_h"
3283 pulse_indev_deps="libpulse"
3284 pulse_outdev_deps="libpulse"
3285 sdl2_outdev_deps="sdl2"
3286 sndio_indev_deps="sndio"
3287 sndio_outdev_deps="sndio"
3288 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3289 v4l2_indev_suggest="libv4l2"
3290 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3291 v4l2_outdev_suggest="libv4l2"
3292 vfwcap_indev_deps="vfw32 vfwcap_defines"
3293 xcbgrab_indev_deps="libxcb"
3294 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3295 xv_outdev_deps="xlib"
3296
3297 # protocols
3298 async_protocol_deps="threads"
3299 bluray_protocol_deps="libbluray"
3300 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3301 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl mbedtls"
3302 ffrtmpcrypt_protocol_select="tcp_protocol"
3303 ffrtmphttp_protocol_conflict="librtmp_protocol"
3304 ffrtmphttp_protocol_select="http_protocol"
3305 ftp_protocol_select="tcp_protocol"
3306 gopher_protocol_select="network"
3307 http_protocol_select="tcp_protocol"
3308 http_protocol_suggest="zlib"
3309 httpproxy_protocol_select="tcp_protocol"
3310 httpproxy_protocol_suggest="zlib"
3311 https_protocol_select="tls_protocol"
3312 https_protocol_suggest="zlib"
3313 icecast_protocol_select="http_protocol"
3314 mmsh_protocol_select="http_protocol"
3315 mmst_protocol_select="network"
3316 rtmp_protocol_conflict="librtmp_protocol"
3317 rtmp_protocol_select="tcp_protocol"
3318 rtmp_protocol_suggest="zlib"
3319 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3320 rtmpe_protocol_suggest="zlib"
3321 rtmps_protocol_conflict="librtmp_protocol"
3322 rtmps_protocol_select="tls_protocol"
3323 rtmps_protocol_suggest="zlib"
3324 rtmpt_protocol_select="ffrtmphttp_protocol"
3325 rtmpt_protocol_suggest="zlib"
3326 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3327 rtmpte_protocol_suggest="zlib"
3328 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3329 rtmpts_protocol_suggest="zlib"
3330 rtp_protocol_select="udp_protocol"
3331 schannel_conflict="openssl gnutls libtls mbedtls"
3332 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3333 sctp_protocol_select="network"
3334 securetransport_conflict="openssl gnutls libtls mbedtls"
3335 srtp_protocol_select="rtp_protocol srtp"
3336 tcp_protocol_select="network"
3337 tls_protocol_deps_any="gnutls openssl schannel securetransport libtls mbedtls"
3338 tls_protocol_select="tcp_protocol"
3339 udp_protocol_select="network"
3340 udplite_protocol_select="network"
3341 unix_protocol_deps="sys_un_h"
3342 unix_protocol_select="network"
3343
3344 # external library protocols
3345 librtmp_protocol_deps="librtmp"
3346 librtmpe_protocol_deps="librtmp"
3347 librtmps_protocol_deps="librtmp"
3348 librtmpt_protocol_deps="librtmp"
3349 librtmpte_protocol_deps="librtmp"
3350 libsmbclient_protocol_deps="libsmbclient gplv3"
3351 libsrt_protocol_deps="libsrt"
3352 libsrt_protocol_select="network"
3353 libssh_protocol_deps="libssh"
3354 libtls_conflict="openssl gnutls mbedtls"
3355
3356 # filters
3357 afftdn_filter_deps="avcodec"
3358 afftdn_filter_select="fft"
3359 afftfilt_filter_deps="avcodec"
3360 afftfilt_filter_select="fft"
3361 afir_filter_deps="avcodec"
3362 afir_filter_select="fft"
3363 amovie_filter_deps="avcodec avformat"
3364 aresample_filter_deps="swresample"
3365 ass_filter_deps="libass"
3366 atempo_filter_deps="avcodec"
3367 atempo_filter_select="rdft"
3368 avgblur_opencl_filter_deps="opencl"
3369 azmq_filter_deps="libzmq"
3370 blackframe_filter_deps="gpl"
3371 bm3d_filter_deps="avcodec"
3372 bm3d_filter_select="dct"
3373 boxblur_filter_deps="gpl"
3374 boxblur_opencl_filter_deps="opencl gpl"
3375 bs2b_filter_deps="libbs2b"
3376 colormatrix_filter_deps="gpl"
3377 convolution_opencl_filter_deps="opencl"
3378 convolve_filter_deps="avcodec"
3379 convolve_filter_select="fft"
3380 coreimage_filter_deps="coreimage appkit"
3381 coreimage_filter_extralibs="-framework OpenGL"
3382 coreimagesrc_filter_deps="coreimage appkit"
3383 coreimagesrc_filter_extralibs="-framework OpenGL"
3384 cover_rect_filter_deps="avcodec avformat gpl"
3385 cropdetect_filter_deps="gpl"
3386 deconvolve_filter_deps="avcodec"
3387 deconvolve_filter_select="fft"
3388 deinterlace_qsv_filter_deps="libmfx"
3389 deinterlace_vaapi_filter_deps="vaapi"
3390 delogo_filter_deps="gpl"
3391 denoise_vaapi_filter_deps="vaapi"
3392 deshake_filter_select="pixelutils"
3393 dilation_opencl_filter_deps="opencl"
3394 drawtext_filter_deps="libfreetype"
3395 drawtext_filter_suggest="libfontconfig libfribidi"
3396 elbg_filter_deps="avcodec"
3397 eq_filter_deps="gpl"
3398 erosion_opencl_filter_deps="opencl"
3399 fftfilt_filter_deps="avcodec"
3400 fftfilt_filter_select="rdft"
3401 fftdnoiz_filter_deps="avcodec"
3402 fftdnoiz_filter_select="fft"
3403 find_rect_filter_deps="avcodec avformat gpl"
3404 firequalizer_filter_deps="avcodec"
3405 firequalizer_filter_select="rdft"
3406 flite_filter_deps="libflite"
3407 framerate_filter_select="scene_sad"
3408 freezedetect_filter_select="scene_sad"
3409 frei0r_filter_deps="frei0r libdl"
3410 frei0r_src_filter_deps="frei0r libdl"
3411 fspp_filter_deps="gpl"
3412 geq_filter_deps="gpl"
3413 histeq_filter_deps="gpl"
3414 hqdn3d_filter_deps="gpl"
3415 interlace_filter_deps="gpl"
3416 kerndeint_filter_deps="gpl"
3417 ladspa_filter_deps="ladspa libdl"
3418 lensfun_filter_deps="liblensfun version3"
3419 lv2_filter_deps="lv2"
3420 mcdeint_filter_deps="avcodec gpl"
3421 movie_filter_deps="avcodec avformat"
3422 mpdecimate_filter_deps="gpl"
3423 mpdecimate_filter_select="pixelutils"
3424 minterpolate_filter_select="scene_sad"
3425 mptestsrc_filter_deps="gpl"
3426 negate_filter_deps="lut_filter"
3427 nnedi_filter_deps="gpl"
3428 ocr_filter_deps="libtesseract"
3429 ocv_filter_deps="libopencv"
3430 openclsrc_filter_deps="opencl"
3431 overlay_opencl_filter_deps="opencl"
3432 overlay_qsv_filter_deps="libmfx"
3433 overlay_qsv_filter_select="qsvvpp"
3434 owdenoise_filter_deps="gpl"
3435 pan_filter_deps="swresample"
3436 perspective_filter_deps="gpl"
3437 phase_filter_deps="gpl"
3438 pp7_filter_deps="gpl"
3439 pp_filter_deps="gpl postproc"
3440 prewitt_opencl_filter_deps="opencl"
3441 procamp_vaapi_filter_deps="vaapi"
3442 program_opencl_filter_deps="opencl"
3443 pullup_filter_deps="gpl"
3444 removelogo_filter_deps="avcodec avformat swscale"
3445 repeatfields_filter_deps="gpl"
3446 resample_filter_deps="avresample"
3447 roberts_opencl_filter_deps="opencl"
3448 rubberband_filter_deps="librubberband"
3449 sab_filter_deps="gpl swscale"
3450 scale2ref_filter_deps="swscale"
3451 scale_filter_deps="swscale"
3452 scale_qsv_filter_deps="libmfx"
3453 select_filter_select="scene_sad"
3454 sharpness_vaapi_filter_deps="vaapi"
3455 showcqt_filter_deps="avcodec avformat swscale"
3456 showcqt_filter_suggest="libfontconfig libfreetype"
3457 showcqt_filter_select="fft"
3458 showfreqs_filter_deps="avcodec"
3459 showfreqs_filter_select="fft"
3460 showspectrum_filter_deps="avcodec"
3461 showspectrum_filter_select="fft"
3462 showspectrumpic_filter_deps="avcodec"
3463 showspectrumpic_filter_select="fft"
3464 signature_filter_deps="gpl avcodec avformat"
3465 smartblur_filter_deps="gpl swscale"
3466 sobel_opencl_filter_deps="opencl"
3467 sofalizer_filter_deps="libmysofa avcodec"
3468 sofalizer_filter_select="fft"
3469 spectrumsynth_filter_deps="avcodec"
3470 spectrumsynth_filter_select="fft"
3471 spp_filter_deps="gpl avcodec"
3472 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3473 sr_filter_deps="avformat swscale"
3474 sr_filter_select="dnn"
3475 stereo3d_filter_deps="gpl"
3476 subtitles_filter_deps="avformat avcodec libass"
3477 super2xsai_filter_deps="gpl"
3478 pixfmts_super2xsai_test_deps="super2xsai_filter"
3479 tinterlace_filter_deps="gpl"
3480 tinterlace_merge_test_deps="tinterlace_filter"
3481 tinterlace_pad_test_deps="tinterlace_filter"
3482 tonemap_filter_deps="const_nan"
3483 tonemap_opencl_filter_deps="opencl const_nan"
3484 transpose_opencl_filter_deps="opencl"
3485 unsharp_opencl_filter_deps="opencl"
3486 uspp_filter_deps="gpl avcodec"
3487 vaguedenoiser_filter_deps="gpl"
3488 vidstabdetect_filter_deps="libvidstab"
3489 vidstabtransform_filter_deps="libvidstab"
3490 libvmaf_filter_deps="libvmaf pthreads"
3491 zmq_filter_deps="libzmq"
3492 zoompan_filter_deps="swscale"
3493 zscale_filter_deps="libzimg const_nan"
3494 scale_vaapi_filter_deps="vaapi"
3495 vpp_qsv_filter_deps="libmfx"
3496 vpp_qsv_filter_select="qsvvpp"
3497 yadif_cuda_filter_deps="cuda_sdk"
3498
3499 # examples
3500 avio_dir_cmd_deps="avformat avutil"
3501 avio_reading_deps="avformat avcodec avutil"
3502 decode_audio_example_deps="avcodec avutil"
3503 decode_video_example_deps="avcodec avutil"
3504 demuxing_decoding_example_deps="avcodec avformat avutil"
3505 encode_audio_example_deps="avcodec avutil"
3506 encode_video_example_deps="avcodec avutil"
3507 extract_mvs_example_deps="avcodec avformat avutil"
3508 filter_audio_example_deps="avfilter avutil"
3509 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3510 filtering_video_example_deps="avfilter avcodec avformat avutil"
3511 http_multiclient_example_deps="avformat avutil fork"
3512 hw_decode_example_deps="avcodec avformat avutil"
3513 metadata_example_deps="avformat avutil"
3514 muxing_example_deps="avcodec avformat avutil swscale"
3515 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3516 remuxing_example_deps="avcodec avformat avutil"
3517 resampling_audio_example_deps="avutil swresample"
3518 scaling_video_example_deps="avutil swscale"
3519 transcode_aac_example_deps="avcodec avformat swresample"
3520 transcoding_example_deps="avfilter avcodec avformat avutil"
3521 vaapi_encode_example_deps="avcodec avutil h264_vaapi_encoder"
3522 vaapi_transcode_example_deps="avcodec avformat avutil h264_vaapi_encoder"
3523
3524 # EXTRALIBS_LIST
3525 cpu_init_extralibs="pthreads_extralibs"
3526 cws2fws_extralibs="zlib_extralibs"
3527
3528 # libraries, in any order
3529 avcodec_deps="avutil"
3530 avcodec_suggest="libm"
3531 avcodec_select="null_bsf"
3532 avdevice_deps="avformat avcodec avutil"
3533 avdevice_suggest="libm"
3534 avfilter_deps="avutil"
3535 avfilter_suggest="libm"
3536 avformat_deps="avcodec avutil"
3537 avformat_suggest="libm network zlib"
3538 avresample_deps="avutil"
3539 avresample_suggest="libm"
3540 avutil_suggest="clock_gettime ffnvcodec libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia bcrypt"
3541 postproc_deps="avutil gpl"
3542 postproc_suggest="libm"
3543 swresample_deps="avutil"
3544 swresample_suggest="libm libsoxr"
3545 swscale_deps="avutil"
3546 swscale_suggest="libm"
3547
3548 avcodec_extralibs="pthreads_extralibs iconv_extralibs"
3549 avfilter_extralibs="pthreads_extralibs"
3550 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3551
3552 # programs
3553 ffmpeg_deps="avcodec avfilter avformat"
3554 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3555                null_filter
3556                trim_filter"
3557 ffmpeg_suggest="ole32 psapi shell32"
3558 ffplay_deps="avcodec avformat swscale swresample sdl2"
3559 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3560 ffplay_suggest="shell32"
3561 ffprobe_deps="avcodec avformat"
3562 ffprobe_suggest="shell32"
3563
3564 # documentation
3565 podpages_deps="perl"
3566 manpages_deps="perl pod2man"
3567 htmlpages_deps="perl"
3568 htmlpages_deps_any="makeinfo_html texi2html"
3569 txtpages_deps="perl makeinfo"
3570 doc_deps_any="manpages htmlpages podpages txtpages"
3571
3572 # default parameters
3573
3574 logfile="ffbuild/config.log"
3575
3576 # installation paths
3577 prefix_default="/usr/local"
3578 bindir_default='${prefix}/bin'
3579 datadir_default='${prefix}/share/ffmpeg'
3580 docdir_default='${prefix}/share/doc/ffmpeg'
3581 incdir_default='${prefix}/include'
3582 libdir_default='${prefix}/lib'
3583 mandir_default='${prefix}/share/man'
3584
3585 # toolchain
3586 ar_default="ar"
3587 cc_default="gcc"
3588 cxx_default="g++"
3589 host_cc_default="gcc"
3590 doxygen_default="doxygen"
3591 install="install"
3592 ln_s_default="ln -s -f"
3593 nm_default="nm -g"
3594 pkg_config_default=pkg-config
3595 ranlib_default="ranlib"
3596 strip_default="strip"
3597 version_script='--version-script'
3598 objformat="elf32"
3599 x86asmexe_default="nasm"
3600 windres_default="windres"
3601 nvcc_default="nvcc"
3602 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3603 striptype="direct"
3604
3605 # OS
3606 target_os_default=$(tolower $(uname -s))
3607 host_os=$target_os_default
3608
3609 # machine
3610 if test "$target_os_default" = aix; then
3611     arch_default=$(uname -p)
3612     strip_default="strip -X32_64"
3613     nm_default="nm -g -X32_64"
3614 else
3615     arch_default=$(uname -m)
3616 fi
3617 cpu="generic"
3618 intrinsics="none"
3619
3620 # configurable options
3621 enable $PROGRAM_LIST
3622 enable $DOCUMENT_LIST
3623 enable $EXAMPLE_LIST
3624 enable $(filter_out avresample $LIBRARY_LIST)
3625 enable stripping
3626
3627 enable asm
3628 enable debug
3629 enable doc
3630 enable faan faandct faanidct
3631 enable optimizations
3632 enable runtime_cpudetect
3633 enable safe_bitstream_reader
3634 enable static
3635 enable swscale_alpha
3636 enable valgrind_backtrace
3637
3638 sws_max_filter_size_default=256
3639 set_default sws_max_filter_size
3640
3641 # internal components are enabled by default
3642 enable $EXTRALIBS_LIST
3643
3644 # Avoid external, non-system, libraries getting enabled by dependency resolution
3645 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3646
3647 # build settings
3648 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3649 LIBPREF="lib"
3650 LIBSUF=".a"
3651 FULLNAME='$(NAME)$(BUILDSUF)'
3652 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3653 SLIBPREF="lib"
3654 SLIBSUF=".so"
3655 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3656 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3657 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3658 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3659 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3660 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3661 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3662
3663 asflags_filter=echo
3664 cflags_filter=echo
3665 ldflags_filter=echo
3666
3667 AS_C='-c'
3668 AS_O='-o $@'
3669 CC_C='-c'
3670 CC_E='-E -o $@'
3671 CC_O='-o $@'
3672 CXX_C='-c'
3673 CXX_O='-o $@'
3674 OBJCC_C='-c'
3675 OBJCC_E='-E -o $@'
3676 OBJCC_O='-o $@'
3677 X86ASM_O='-o $@'
3678 LD_O='-o $@'
3679 LD_LIB='-l%'
3680 LD_PATH='-L'
3681 HOSTCC_C='-c'
3682 HOSTCC_E='-E -o $@'
3683 HOSTCC_O='-o $@'
3684 HOSTLD_O='-o $@'
3685 NVCC_C='-c'
3686 NVCC_O='-o $@'
3687
3688 host_extralibs='-lm'
3689 host_cflags_filter=echo
3690 host_ldflags_filter=echo
3691
3692 target_path='$(CURDIR)'
3693
3694 # since the object filename is not given with the -MM flag, the compiler
3695 # is only able to print the basename, and we must add the path ourselves
3696 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3697 DEPFLAGS='-MM'
3698
3699 mkdir -p ffbuild
3700
3701 # find source path
3702 if test -f configure; then
3703     source_path=.
3704 else
3705     source_path=$(cd $(dirname "$0"); pwd)
3706     case "$source_path" in
3707         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3708     esac
3709     test -e "$source_path/config.h" &&
3710         die "Out of tree builds are impossible with config.h in source dir."
3711 fi
3712
3713 for v in "$@"; do
3714     r=${v#*=}
3715     l=${v%"$r"}
3716     r=$(sh_quote "$r")
3717     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3718 done
3719
3720 find_things_extern(){
3721     thing=$1
3722     pattern=$2
3723     file=$source_path/$3
3724     out=${4:-$thing}
3725     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$out/p" "$file"
3726 }
3727
3728 find_filters_extern(){
3729     file=$source_path/$1
3730     sed -n 's/^extern AVFilter ff_[avfsinkrc]\{2,5\}_\([[:alnum:]_]\{1,\}\);/\1_filter/p' $file
3731 }
3732
3733 FILTER_LIST=$(find_filters_extern libavfilter/allfilters.c)
3734 OUTDEV_LIST=$(find_things_extern muxer AVOutputFormat libavdevice/alldevices.c outdev)
3735 INDEV_LIST=$(find_things_extern demuxer AVInputFormat libavdevice/alldevices.c indev)
3736 MUXER_LIST=$(find_things_extern muxer AVOutputFormat libavformat/allformats.c)
3737 DEMUXER_LIST=$(find_things_extern demuxer AVInputFormat libavformat/allformats.c)
3738 ENCODER_LIST=$(find_things_extern encoder AVCodec libavcodec/allcodecs.c)
3739 DECODER_LIST=$(find_things_extern decoder AVCodec libavcodec/allcodecs.c)
3740 CODEC_LIST="
3741     $ENCODER_LIST
3742     $DECODER_LIST
3743 "
3744 PARSER_LIST=$(find_things_extern parser AVCodecParser libavcodec/parsers.c)
3745 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3746 HWACCEL_LIST=$(find_things_extern hwaccel AVHWAccel libavcodec/hwaccels.h)
3747 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3748
3749 AVCODEC_COMPONENTS_LIST="
3750     $BSF_LIST
3751     $DECODER_LIST
3752     $ENCODER_LIST
3753     $HWACCEL_LIST
3754     $PARSER_LIST
3755 "
3756
3757 AVDEVICE_COMPONENTS_LIST="
3758     $INDEV_LIST
3759     $OUTDEV_LIST
3760 "
3761
3762 AVFILTER_COMPONENTS_LIST="
3763     $FILTER_LIST
3764 "
3765
3766 AVFORMAT_COMPONENTS_LIST="
3767     $DEMUXER_LIST
3768     $MUXER_LIST
3769     $PROTOCOL_LIST
3770 "
3771
3772 ALL_COMPONENTS="
3773     $AVCODEC_COMPONENTS_LIST
3774     $AVDEVICE_COMPONENTS_LIST
3775     $AVFILTER_COMPONENTS_LIST
3776     $AVFORMAT_COMPONENTS_LIST
3777 "
3778
3779 for n in $COMPONENT_LIST; do
3780     v=$(toupper ${n%s})_LIST
3781     eval enable \$$v
3782     eval ${n}_if_any="\$$v"
3783 done
3784
3785 enable $ARCH_EXT_LIST
3786
3787 die_unknown(){
3788     echo "Unknown option \"$1\"."
3789     echo "See $0 --help for available options."
3790     exit 1
3791 }
3792
3793 print_in_columns() {
3794     cols=$(expr $ncols / 24)
3795     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3796 }
3797
3798 show_list() {
3799     suffix=_$1
3800     shift
3801     echo $* | sed s/$suffix//g | print_in_columns
3802     exit 0
3803 }
3804
3805 rand_list(){
3806     IFS=', '
3807     set -- $*
3808     unset IFS
3809     for thing; do
3810         comp=${thing%:*}
3811         prob=${thing#$comp}
3812         prob=${prob#:}
3813         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3814         echo "prob ${prob:-0.5}"
3815         printf '%s\n' $comp
3816     done
3817 }
3818
3819 do_random(){
3820     action=$1
3821     shift
3822     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3823     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3824 }
3825
3826 for opt do
3827     optval="${opt#*=}"
3828     case "$opt" in
3829         --extra-ldflags=*)
3830             add_ldflags $optval
3831         ;;
3832         --extra-ldexeflags=*)
3833             add_ldexeflags $optval
3834         ;;
3835         --extra-ldsoflags=*)
3836             add_ldsoflags $optval
3837         ;;
3838         --extra-ldlibflags=*)
3839             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3840                  "removed in the future. Use --extra-ldsoflags instead."
3841             add_ldsoflags $optval
3842         ;;
3843         --extra-libs=*)
3844             add_extralibs $optval
3845         ;;
3846         --disable-devices)
3847             disable $INDEV_LIST $OUTDEV_LIST
3848         ;;
3849         --enable-debug=*)
3850             debuglevel="$optval"
3851         ;;
3852         --disable-programs)
3853             disable $PROGRAM_LIST
3854         ;;
3855         --disable-everything)
3856             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3857         ;;
3858         --disable-all)
3859             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3860             disable $LIBRARY_LIST $PROGRAM_LIST doc
3861             enable avutil
3862         ;;
3863         --enable-random|--disable-random)
3864             action=${opt%%-random}
3865             do_random ${action#--} $COMPONENT_LIST
3866         ;;
3867         --enable-random=*|--disable-random=*)
3868             action=${opt%%-random=*}
3869             do_random ${action#--} $optval
3870         ;;
3871         --enable-sdl)
3872             enable sdl2
3873         ;;
3874         --enable-*=*|--disable-*=*)
3875             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3876             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3877             eval list=\$$(toupper $thing)_LIST
3878             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3879             list=$(filter "$name" $list)
3880             [ "$list" = "" ] && warn "Option $opt did not match anything"
3881             $action $list
3882         ;;
3883         --enable-yasm|--disable-yasm)
3884             warn "The ${opt} option is only provided for compatibility and will be\n"\
3885                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3886             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3887         ;;
3888         --yasmexe=*)
3889             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3890                  "removed in the future. Use --x86asmexe instead."
3891             x86asmexe="$optval"
3892         ;;
3893         --enable-?*|--disable-?*)
3894             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3895             if is_in $option $COMPONENT_LIST; then
3896                 test $action = disable && action=unset
3897                 eval $action \$$(toupper ${option%s})_LIST
3898             elif is_in $option $CMDLINE_SELECT; then
3899                 $action $option
3900             else
3901                 die_unknown $opt
3902             fi
3903         ;;
3904         --list-*)
3905             NAME="${opt#--list-}"
3906             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3907             NAME=${NAME%s}
3908             eval show_list $NAME \$$(toupper $NAME)_LIST
3909         ;;
3910         --help|-h) show_help
3911         ;;
3912         --quiet|-q) quiet=yes
3913         ;;
3914         --fatal-warnings) enable fatal_warnings
3915         ;;
3916         --libfuzzer=*)
3917             libfuzzer_path="$optval"
3918         ;;
3919         *)
3920             optname="${opt%%=*}"
3921             optname="${optname#--}"
3922             optname=$(echo "$optname" | sed 's/-/_/g')
3923             if is_in $optname $CMDLINE_SET; then
3924                 eval $optname='$optval'
3925             elif is_in $optname $CMDLINE_APPEND; then
3926                 append $optname "$optval"
3927             else
3928                 die_unknown $opt
3929             fi
3930         ;;
3931     esac
3932 done
3933
3934 for e in $env; do
3935     eval "export $e"
3936 done
3937
3938 if disabled autodetect; then
3939
3940     # Unless iconv is explicitely disabled by the user, we still want to probe
3941     # for the iconv from the libc.
3942     disabled iconv || enable libc_iconv
3943
3944     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3945     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3946 fi
3947 # Mark specifically enabled, but normally autodetected libraries as requested.
3948 for lib in $AUTODETECT_LIBS; do
3949     enabled $lib && request $lib
3950 done
3951 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
3952 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3953 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3954
3955 disabled logging && logfile=/dev/null
3956
3957 # command line configuration sanity checks
3958
3959 # we need to build at least one lib type
3960 if ! enabled_any static shared; then
3961     cat <<EOF
3962 At least one library type must be built.
3963 Specify --enable-static to build the static libraries or --enable-shared to
3964 build the shared libraries as well. To only build the shared libraries specify
3965 --disable-static in addition to --enable-shared.
3966 EOF
3967     exit 1
3968 fi
3969
3970 die_license_disabled() {
3971     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3972 }
3973
3974 die_license_disabled_gpl() {
3975     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3976 }
3977
3978 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3979 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3980
3981 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3982 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3983
3984 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3985
3986 if enabled nonfree; then
3987     license="nonfree and unredistributable"
3988 elif enabled gplv3; then
3989     license="GPL version 3 or later"
3990 elif enabled lgplv3; then
3991     license="LGPL version 3 or later"
3992 elif enabled gpl; then
3993     license="GPL version 2 or later"
3994 else
3995     license="LGPL version 2.1 or later"
3996 fi
3997
3998 enabled_all gnutls openssl &&
3999     die "GnuTLS and OpenSSL must not be enabled at the same time."
4000
4001 enabled_all gnutls mbedtls &&
4002     die "GnuTLS and mbedTLS must not be enabled at the same time."
4003
4004 enabled_all openssl mbedtls &&
4005     die "OpenSSL and mbedTLS must not be enabled at the same time."
4006
4007 # Disable all the library-specific components if the library itself
4008 # is disabled, see AVCODEC_LIST and following _LIST variables.
4009
4010 disable_components(){
4011     disabled ${1} && disable $(
4012         eval components="\$$(toupper ${1})_COMPONENTS"
4013         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
4014     )
4015 }
4016
4017 map 'disable_components $v' $LIBRARY_LIST
4018
4019 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
4020 set >> $logfile
4021
4022 test -n "$valgrind" && toolchain="valgrind-memcheck"
4023
4024 enabled ossfuzz && ! echo $CFLAGS | grep -q -- "-fsanitize="  && ! echo $CFLAGS | grep -q -- "-fcoverage-mapping" &&{
4025     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
4026     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
4027 }
4028
4029 case "$toolchain" in
4030     *-asan)
4031         cc_default="${toolchain%-asan}"
4032         add_cflags  -fsanitize=address
4033         add_ldflags -fsanitize=address
4034     ;;
4035     *-msan)
4036         cc_default="${toolchain%-msan}"
4037         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
4038         add_ldflags -fsanitize=memory
4039     ;;
4040     *-tsan)
4041         cc_default="${toolchain%-tsan}"
4042         add_cflags  -fsanitize=thread
4043         add_ldflags -fsanitize=thread
4044         case "$toolchain" in
4045             gcc-tsan)
4046                 add_cflags  -fPIC
4047                 add_ldflags -fPIC
4048                 ;;
4049         esac
4050     ;;
4051     *-usan)
4052         cc_default="${toolchain%-usan}"
4053         add_cflags  -fsanitize=undefined
4054         add_ldflags -fsanitize=undefined
4055     ;;
4056     valgrind-*)
4057         target_exec_default="valgrind"
4058         case "$toolchain" in
4059             valgrind-massif)
4060                 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"
4061                 ;;
4062             valgrind-memcheck)
4063                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
4064                 ;;
4065         esac
4066     ;;
4067     msvc)
4068         # Check whether the current MSVC version needs the C99 converter.
4069         # From MSVC 2013 (compiler major version 18) onwards, it does actually
4070         # support enough of C99 to build ffmpeg. Default to the new
4071         # behaviour if the regexp was unable to match anything, since this
4072         # successfully parses the version number of existing supported
4073         # versions that require the converter (MSVC 2010 and 2012).
4074         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
4075         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
4076             cc_default="cl"
4077             cxx_default="cl"
4078         else
4079             die "Unsupported MSVC version (2013 or newer required)"
4080         fi
4081         ld_default="$source_path/compat/windows/mslink"
4082         nm_default="dumpbin -symbols"
4083         ar_default="lib"
4084         case "$arch" in
4085         aarch64|arm64)
4086             as_default="armasm64"
4087             ;;
4088         arm*)
4089             as_default="armasm"
4090             ;;
4091         esac
4092         target_os_default="win32"
4093         # Use a relative path for TMPDIR. This makes sure all the
4094         # ffconf temp files are written with a relative path, avoiding
4095         # issues with msys/win32 path conversion for MSVC parameters
4096         # such as -Fo<file> or -out:<file>.
4097         TMPDIR=.
4098     ;;
4099     icl)
4100         cc_default="icl"
4101         ld_default="xilink"
4102         nm_default="dumpbin -symbols"
4103         ar_default="xilib"
4104         target_os_default="win32"
4105         TMPDIR=.
4106     ;;
4107     gcov)
4108         add_cflags  -fprofile-arcs -ftest-coverage
4109         add_ldflags -fprofile-arcs -ftest-coverage
4110     ;;
4111     llvm-cov)
4112         add_cflags -fprofile-arcs -ftest-coverage
4113         add_ldflags --coverage
4114     ;;
4115     hardened)
4116         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
4117         add_cflags   -fno-strict-overflow -fstack-protector-all
4118         add_ldflags  -Wl,-z,relro -Wl,-z,now
4119         add_cflags   -fPIE
4120         add_ldexeflags -fPIE -pie
4121     ;;
4122     ?*)
4123         die "Unknown toolchain $toolchain"
4124     ;;
4125 esac
4126
4127 if test -n "$cross_prefix"; then
4128     test -n "$arch" && test -n "$target_os" ||
4129         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
4130     enable cross_compile
4131 fi
4132
4133 set_default target_os
4134 if test "$target_os" = android; then
4135     cc_default="clang"
4136 fi
4137
4138 ar_default="${cross_prefix}${ar_default}"
4139 cc_default="${cross_prefix}${cc_default}"
4140 cxx_default="${cross_prefix}${cxx_default}"
4141 nm_default="${cross_prefix}${nm_default}"
4142 pkg_config_default="${cross_prefix}${pkg_config_default}"
4143 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
4144     ranlib_default="${cross_prefix}${ranlib_default} -D"
4145 else
4146     ranlib_default="${cross_prefix}${ranlib_default}"
4147 fi
4148 strip_default="${cross_prefix}${strip_default}"
4149 windres_default="${cross_prefix}${windres_default}"
4150
4151 sysinclude_default="${sysroot}/usr/include"
4152
4153 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
4154     target_exec x86asmexe nvcc
4155 enabled cross_compile || host_cc_default=$cc
4156 set_default host_cc
4157
4158 pkg_config_fail_message=""
4159 if ! $pkg_config --version >/dev/null 2>&1; then
4160     warn "$pkg_config not found, library detection may fail."
4161     pkg_config=false
4162 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
4163     pkg_config_fail_message="
4164 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
4165 fi
4166
4167 if test $doxygen != $doxygen_default && \
4168   ! $doxygen --version >/dev/null 2>&1; then
4169     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
4170 fi
4171
4172 exesuf() {
4173     case $1 in
4174         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
4175     esac
4176 }
4177
4178 EXESUF=$(exesuf $target_os)
4179 HOSTEXESUF=$(exesuf $host_os)
4180
4181 # set temporary file name
4182 : ${TMPDIR:=$TEMPDIR}
4183 : ${TMPDIR:=$TMP}
4184 : ${TMPDIR:=/tmp}
4185
4186 if [ -n "$tempprefix" ] ; then
4187     mktemp(){
4188         tmpname="$tempprefix.${HOSTNAME}.${UID}"
4189         echo "$tmpname"
4190         mkdir "$tmpname"
4191     }
4192 elif ! test_cmd mktemp -u XXXXXX; then
4193     # simple replacement for missing mktemp
4194     # NOT SAFE FOR GENERAL USE
4195     mktemp(){
4196         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
4197         echo "$tmpname"
4198         mkdir "$tmpname"
4199     }
4200 fi
4201
4202 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
4203     die "Unable to create temporary directory in $TMPDIR."
4204
4205 tmpfile(){
4206     tmp="${FFTMPDIR}/test"$2
4207     (set -C; exec > $tmp) 2> /dev/null ||
4208         die "Unable to create temporary file in $FFTMPDIR."
4209     eval $1=$tmp
4210 }
4211
4212 trap 'rm -rf -- "$FFTMPDIR"' EXIT
4213 trap 'exit 2' INT
4214
4215 tmpfile TMPASM .asm
4216 tmpfile TMPC   .c
4217 tmpfile TMPCPP .cpp
4218 tmpfile TMPE   $EXESUF
4219 tmpfile TMPH   .h
4220 tmpfile TMPM   .m
4221 tmpfile TMPO   .o
4222 tmpfile TMPS   .S
4223 tmpfile TMPSH  .sh
4224 tmpfile TMPV   .ver
4225
4226 unset -f mktemp
4227
4228 chmod +x $TMPE
4229
4230 # make sure we can execute files in $TMPDIR
4231 cat > $TMPSH 2>> $logfile <<EOF
4232 #! /bin/sh
4233 EOF
4234 chmod +x $TMPSH >> $logfile 2>&1
4235 if ! $TMPSH >> $logfile 2>&1; then
4236     cat <<EOF
4237 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
4238 variable to another directory and make sure that it is not mounted noexec.
4239 EOF
4240     die "Sanity test failed."
4241 fi
4242
4243 armasm_flags(){
4244     for flag; do
4245         case $flag in
4246             # Filter out MSVC cl.exe options from cflags that shouldn't
4247             # be passed to gas-preprocessor
4248             -M[TD]*)                                            ;;
4249             *)                  echo $flag                      ;;
4250         esac
4251    done
4252 }
4253
4254 cparser_flags(){
4255     for flag; do
4256         case $flag in
4257             -Wno-switch)             echo -Wno-switch-enum ;;
4258             -Wno-format-zero-length) ;;
4259             -Wdisabled-optimization) ;;
4260             -Wno-pointer-sign)       echo -Wno-other ;;
4261             *)                       echo $flag ;;
4262         esac
4263     done
4264 }
4265
4266 msvc_common_flags(){
4267     for flag; do
4268         case $flag in
4269             # In addition to specifying certain flags under the compiler
4270             # specific filters, they must be specified here as well or else the
4271             # generic catch all at the bottom will print the original flag.
4272             -Wall)                ;;
4273             -Wextra)              ;;
4274             -std=c99)             ;;
4275             # Common flags
4276             -fomit-frame-pointer) ;;
4277             -g)                   echo -Z7 ;;
4278             -fno-math-errno)      ;;
4279             -fno-common)          ;;
4280             -fno-signed-zeros)    ;;
4281             -fPIC)                ;;
4282             -mthumb)              ;;
4283             -march=*)             ;;
4284             -lz)                  echo zlib.lib ;;
4285             -lx264)               echo libx264.lib ;;
4286             -lstdc++)             ;;
4287             -l*)                  echo ${flag#-l}.lib ;;
4288             -LARGEADDRESSAWARE)   echo $flag ;;
4289             -L*)                  echo -libpath:${flag#-L} ;;
4290             *)                    echo $flag ;;
4291         esac
4292     done
4293 }
4294
4295 msvc_flags(){
4296     msvc_common_flags "$@"
4297     for flag; do
4298         case $flag in
4299             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4300                                        -wd4554 ;;
4301             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4302                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4303                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4304                                        -wd4307 \
4305                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4306         esac
4307     done
4308 }
4309
4310 icl_flags(){
4311     msvc_common_flags "$@"
4312     for flag; do
4313         case $flag in
4314             # Despite what Intel's documentation says -Wall, which is supported
4315             # on Windows, does enable remarks so disable them here.
4316             -Wall)                echo $flag -Qdiag-disable:remark ;;
4317             -std=c99)             echo -Qstd=c99 ;;
4318             -flto)                echo -ipo ;;
4319         esac
4320     done
4321 }
4322
4323 icc_flags(){
4324     for flag; do
4325         case $flag in
4326             -flto)                echo -ipo ;;
4327             *)                    echo $flag ;;
4328         esac
4329     done
4330 }
4331
4332 suncc_flags(){
4333     for flag; do
4334         case $flag in
4335             -march=*|-mcpu=*)
4336                 case "${flag#*=}" in
4337                     native)                   echo -xtarget=native       ;;
4338                     v9|niagara)               echo -xarch=sparc          ;;
4339                     ultrasparc)               echo -xarch=sparcvis       ;;
4340                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4341                     i586|pentium)             echo -xchip=pentium        ;;
4342                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4343                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4344                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4345                     pentium4*)          echo -xtarget=pentium4           ;;
4346                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4347                     *-sse3)             echo -xarch=sse3                 ;;
4348                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4349                     bonnell)                   echo -xarch=ssse3         ;;
4350                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4351                     westmere)                  echo -xtarget=westmere    ;;
4352                     silvermont)                echo -xarch=sse4_2        ;;
4353                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4354                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4355                                                echo -xarch=avx           ;;
4356                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4357                     btver1)                    echo -xarch=amdsse4a      ;;
4358                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4359                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4360                     k8|opteron|athlon64|athlon-fx)
4361                                                echo -xarch=sse2a         ;;
4362                     athlon*)                   echo -xarch=pentium_proa  ;;
4363                 esac
4364                 ;;
4365             -std=c99)             echo -xc99              ;;
4366             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4367             -fPIC)                echo -KPIC -xcode=pic32 ;;
4368             -W*,*)                echo $flag              ;;
4369             -f*-*|-W*|-mimpure-text)                      ;;
4370             -shared)              echo -G                 ;;
4371             *)                    echo $flag              ;;
4372         esac
4373     done
4374 }
4375
4376 probe_cc(){
4377     pfx=$1
4378     _cc=$2
4379     first=$3
4380
4381     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4382     unset _ld_o _ldflags _ld_lib _ld_path
4383     unset _depflags _DEPCMD _DEPFLAGS
4384     _flags_filter=echo
4385
4386     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4387         true # no-op to avoid reading stdin in following checks
4388     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4389         _type=llvm_gcc
4390         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4391         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4392         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4393         _cflags_speed='-O3'
4394         _cflags_size='-Os'
4395     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4396         _type=gcc
4397         gcc_version=$($_cc --version | head -n1)
4398         gcc_basever=$($_cc -dumpversion)
4399         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4400         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4401         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4402         case $gcc_basever in
4403             2) ;;
4404             2.*) ;;
4405             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4406         esac
4407         if [ "$first" = true ]; then
4408             case $gcc_basever in
4409                 4.2*)
4410                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4411             esac
4412         fi
4413         _cflags_speed='-O3'
4414         _cflags_size='-Os'
4415     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4416         _type=icc
4417         _ident=$($_cc --version | head -n1)
4418         _depflags='-MMD'
4419         _cflags_speed='-O3'
4420         _cflags_size='-Os'
4421         _cflags_noopt='-O1'
4422         _flags_filter=icc_flags
4423     elif $_cc -v 2>&1 | grep -q xlc; then
4424         _type=xlc
4425         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4426         _cflags_speed='-O5'
4427         _cflags_size='-O5 -qcompact'
4428     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4429         test -d "$sysroot" || die "No valid sysroot specified."
4430         _type=armcc
4431         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4432         armcc_conf="$PWD/armcc.conf"
4433         $_cc --arm_linux_configure                 \
4434              --arm_linux_config_file="$armcc_conf" \
4435              --configure_sysroot="$sysroot"        \
4436              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4437              die "Error creating armcc configuration file."
4438         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4439         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4440         as_default="${cross_prefix}gcc"
4441         _depflags='-MMD'
4442         _cflags_speed='-O3'
4443         _cflags_size='-Os'
4444     elif $_cc -v 2>&1 | grep -q clang && ! $_cc -? > /dev/null 2>&1; then
4445         _type=clang
4446         _ident=$($_cc --version 2>/dev/null | head -n1)
4447         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4448         _cflags_speed='-O3'
4449         _cflags_size='-Oz'
4450     elif $_cc -V 2>&1 | grep -q Sun; then
4451         _type=suncc
4452         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4453         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4454         _DEPFLAGS='-xM1 -xc99'
4455         _ldflags='-std=c99'
4456         _cflags_speed='-O5'
4457         _cflags_size='-O5 -xspace'
4458         _flags_filter=suncc_flags
4459     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4460         _type=pathscale
4461         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4462         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4463         _cflags_speed='-O2'
4464         _cflags_size='-Os'
4465         _flags_filter='filter_out -Wdisabled-optimization'
4466     elif $_cc -v 2>&1 | grep -q Open64; then
4467         _type=open64
4468         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4469         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4470         _cflags_speed='-O2'
4471         _cflags_size='-Os'
4472         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4473     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4474         _type=armasm
4475         _ident=$($_cc | head -n1)
4476         # 4509: "This form of conditional instruction is deprecated"
4477         _flags="-nologo -ignore 4509"
4478         _flags_filter=armasm_flags
4479     elif $_cc 2>&1 | grep -q Intel; then
4480         _type=icl
4481         _ident=$($_cc 2>&1 | head -n1)
4482         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4483         # Not only is O3 broken on 13.x+ but it is slower on all previous
4484         # versions (tested) as well.
4485         _cflags_speed="-O2"
4486         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4487         if $_cc 2>&1 | grep -q Linker; then
4488             _ld_o='-out:$@'
4489         else
4490             _ld_o='-Fe$@'
4491         fi
4492         _cc_o='-Fo$@'
4493         _cc_e='-P'
4494         _flags_filter=icl_flags
4495         _ld_lib='lib%.a'
4496         _ld_path='-libpath:'
4497         # -Qdiag-error to make icl error when seeing certain unknown arguments
4498         _flags='-nologo -Qdiag-error:4044,10157'
4499         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4500         # with MSVC which enables it by default.
4501         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4502         disable stripping
4503     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4504         # lld can emulate multiple different linkers; in ms link.exe mode,
4505         # the -? parameter gives the help output which contains an identifyable
4506         # string, while it gives an error in other modes.
4507         _type=lld-link
4508         # The link.exe mode doesn't have a switch for getting the version,
4509         # but we can force it back to gnu mode and get the version from there.
4510         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4511         _ld_o='-out:$@'
4512         _flags_filter=msvc_flags
4513         _ld_lib='lib%.a'
4514         _ld_path='-libpath:'
4515     elif $_cc -nologo- 2>&1 | grep -q Microsoft || { $_cc -v 2>&1 | grep -q clang && $_cc -? > /dev/null 2>&1; }; then
4516         _type=msvc
4517         _ident=$($_cc 2>&1 | head -n1 | tr -d '\r')
4518         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4519         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4520         _cflags_speed="-O2"
4521         _cflags_size="-O1"
4522         _cflags_noopt="-O1"
4523         if $_cc -nologo- 2>&1 | grep -q Linker; then
4524             _ld_o='-out:$@'
4525         else
4526             _ld_o='-Fe$@'
4527         fi
4528         _cc_o='-Fo$@'
4529         _cc_e='-P -Fi$@'
4530         _flags_filter=msvc_flags
4531         _ld_lib='lib%.a'
4532         _ld_path='-libpath:'
4533         _flags='-nologo'
4534         disable stripping
4535     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4536         _type=cparser
4537         _ident=$($_cc --version | head -n1)
4538         _depflags='-MMD'
4539         _cflags_speed='-O4'
4540         _cflags_size='-O2'
4541         _flags_filter=cparser_flags
4542     fi
4543
4544     eval ${pfx}_type=\$_type
4545     eval ${pfx}_ident=\$_ident
4546 }
4547
4548 set_ccvars(){
4549     eval ${1}_C=\${_cc_c-\${${1}_C}}
4550     eval ${1}_E=\${_cc_e-\${${1}_E}}
4551     eval ${1}_O=\${_cc_o-\${${1}_O}}
4552
4553     if [ -n "$_depflags" ]; then
4554         eval ${1}_DEPFLAGS=\$_depflags
4555     else
4556         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4557         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4558         eval DEP${1}FLAGS=\$_flags
4559     fi
4560 }
4561
4562 probe_cc cc "$cc" "true"
4563 cflags_filter=$_flags_filter
4564 cflags_speed=$_cflags_speed
4565 cflags_size=$_cflags_size
4566 cflags_noopt=$_cflags_noopt
4567 add_cflags $_flags $_cflags
4568 cc_ldflags=$_ldflags
4569 set_ccvars CC
4570 set_ccvars CXX
4571
4572 probe_cc hostcc "$host_cc"
4573 host_cflags_filter=$_flags_filter
4574 host_cflags_speed=$_cflags_speed
4575 add_host_cflags  $_flags $_cflags
4576 set_ccvars HOSTCC
4577
4578 test -n "$cc_type" && enable $cc_type ||
4579     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4580
4581 : ${as_default:=$cc}
4582 : ${objcc_default:=$cc}
4583 : ${dep_cc_default:=$cc}
4584 : ${ld_default:=$cc}
4585 : ${host_ld_default:=$host_cc}
4586 set_default ar as objcc dep_cc ld ln_s host_ld windres
4587
4588 probe_cc as "$as"
4589 asflags_filter=$_flags_filter
4590 add_asflags $_flags $_cflags
4591 set_ccvars AS
4592
4593 probe_cc objcc "$objcc"
4594 objcflags_filter=$_flags_filter
4595 add_objcflags $_flags $_cflags
4596 set_ccvars OBJC
4597
4598 probe_cc ld "$ld"
4599 ldflags_filter=$_flags_filter
4600 add_ldflags $_flags $_ldflags
4601 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4602 LD_O=${_ld_o-$LD_O}
4603 LD_LIB=${_ld_lib-$LD_LIB}
4604 LD_PATH=${_ld_path-$LD_PATH}
4605
4606 probe_cc hostld "$host_ld"
4607 host_ldflags_filter=$_flags_filter
4608 add_host_ldflags $_flags $_ldflags
4609 HOSTLD_O=${_ld_o-$HOSTLD_O}
4610
4611 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4612     probe_cc depcc "$dep_cc"
4613     CCDEP=${_DEPCMD:-$DEPCMD}
4614     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4615     DEPCCFLAGS=$_flags
4616 fi
4617
4618 if $ar 2>&1 | grep -q Microsoft; then
4619     arflags="-nologo"
4620     ar_o='-out:$@'
4621 elif $ar 2>&1 | grep -q "\[D\] "; then
4622     arflags="rcD"
4623     ar_o='$@'
4624 else
4625     arflags="rc"
4626     ar_o='$@'
4627 fi
4628
4629 add_cflags $extra_cflags
4630 add_cxxflags $extra_cxxflags
4631 add_objcflags $extra_objcflags
4632 add_asflags $extra_cflags
4633
4634 if test -n "$sysroot"; then
4635     case "$cc_type" in
4636         gcc|llvm_gcc|clang)
4637             add_cppflags --sysroot="$sysroot"
4638             add_ldflags --sysroot="$sysroot"
4639         ;;
4640     esac
4641 fi
4642
4643 if test "$cpu" = host; then
4644     enabled cross_compile &&
4645         die "--cpu=host makes no sense when cross-compiling."
4646
4647     case "$cc_type" in
4648         gcc|llvm_gcc)
4649             check_native(){
4650                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4651                 sed -n "/cc1.*$1=/{
4652                             s/.*$1=\\([^ ]*\\).*/\\1/
4653                             p
4654                             q
4655                         }" $TMPE
4656             }
4657             cpu=$(check_native -march || check_native -mcpu)
4658         ;;
4659         clang)
4660             check_native(){
4661                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4662                 sed -n "/cc1.*-target-cpu /{
4663                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4664                             p
4665                             q
4666                         }" $TMPE
4667             }
4668             cpu=$(check_native -march)
4669         ;;
4670     esac
4671
4672     test "${cpu:-host}" = host &&
4673         die "--cpu=host not supported with compiler $cc"
4674 fi
4675
4676 # Deal with common $arch aliases
4677 case "$arch" in
4678     aarch64|arm64)
4679         arch="aarch64"
4680     ;;
4681     arm*|iPad*|iPhone*)
4682         arch="arm"
4683     ;;
4684     mips*|IP*)
4685         case "$arch" in
4686         *el)
4687             add_cppflags -EL
4688             add_ldflags -EL
4689         ;;
4690         *eb)
4691             add_cppflags -EB
4692             add_ldflags -EB
4693         ;;
4694         esac
4695         arch="mips"
4696     ;;
4697     parisc*|hppa*)
4698         arch="parisc"
4699     ;;
4700     "Power Macintosh"|ppc*|powerpc*)
4701         arch="ppc"
4702     ;;
4703     s390|s390x)
4704         arch="s390"
4705     ;;
4706     sh4|sh)
4707         arch="sh4"
4708     ;;
4709     sun4*|sparc*)
4710         arch="sparc"
4711     ;;
4712     tilegx|tile-gx)
4713         arch="tilegx"
4714     ;;
4715     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4716         arch="x86"
4717     ;;
4718 esac
4719
4720 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4721 enable $arch
4722
4723 # Add processor-specific flags
4724 if enabled aarch64; then
4725
4726     case $cpu in
4727         armv*)
4728             cpuflags="-march=$cpu"
4729         ;;
4730         *)
4731             cpuflags="-mcpu=$cpu"
4732         ;;
4733     esac
4734
4735 elif enabled alpha; then
4736
4737     cpuflags="-mcpu=$cpu"
4738
4739 elif enabled arm; then
4740
4741     check_arm_arch() {
4742         test_cpp_condition stddef.h \
4743             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4744             $cpuflags
4745     }
4746
4747     probe_arm_arch() {
4748         if   check_arm_arch 4;        then echo armv4
4749         elif check_arm_arch 4T;       then echo armv4t
4750         elif check_arm_arch 5;        then echo armv5
4751         elif check_arm_arch 5E;       then echo armv5e
4752         elif check_arm_arch 5T;       then echo armv5t
4753         elif check_arm_arch 5TE;      then echo armv5te
4754         elif check_arm_arch 5TEJ;     then echo armv5te
4755         elif check_arm_arch 6;        then echo armv6
4756         elif check_arm_arch 6J;       then echo armv6j
4757         elif check_arm_arch 6K;       then echo armv6k
4758         elif check_arm_arch 6Z;       then echo armv6z
4759         elif check_arm_arch 6KZ;      then echo armv6zk
4760         elif check_arm_arch 6ZK;      then echo armv6zk
4761         elif check_arm_arch 6T2;      then echo armv6t2
4762         elif check_arm_arch 7;        then echo armv7
4763         elif check_arm_arch 7A  7_A;  then echo armv7-a
4764         elif check_arm_arch 7S;       then echo armv7-a
4765         elif check_arm_arch 7R  7_R;  then echo armv7-r
4766         elif check_arm_arch 7M  7_M;  then echo armv7-m
4767         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4768         elif check_arm_arch 8A  8_A;  then echo armv8-a
4769         fi
4770     }
4771
4772     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4773
4774     case $cpu in
4775         armv*)
4776             cpuflags="-march=$cpu"
4777             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4778         ;;
4779         *)
4780             cpuflags="-mcpu=$cpu"
4781             case $cpu in
4782                 cortex-a*)                               subarch=armv7a  ;;
4783                 cortex-r*)                               subarch=armv7r  ;;
4784                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4785                 arm11*)                                  subarch=armv6   ;;
4786                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4787                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4788                 *)                             subarch=$(probe_arm_arch) ;;
4789             esac
4790         ;;
4791     esac
4792
4793     case "$subarch" in
4794         armv5t*)    enable fast_clz                ;;
4795         armv[6-8]*)
4796             enable fast_clz
4797             disabled fast_unaligned || enable fast_unaligned
4798             ;;
4799     esac
4800
4801 elif enabled avr32; then
4802
4803     case $cpu in
4804         ap7[02]0[0-2])
4805             subarch="avr32_ap"
4806             cpuflags="-mpart=$cpu"
4807         ;;
4808         ap)
4809             subarch="avr32_ap"
4810             cpuflags="-march=$cpu"
4811         ;;
4812         uc3[ab]*)
4813             subarch="avr32_uc"
4814             cpuflags="-mcpu=$cpu"
4815         ;;
4816         uc)
4817             subarch="avr32_uc"
4818             cpuflags="-march=$cpu"
4819         ;;
4820     esac
4821
4822 elif enabled bfin; then
4823
4824     cpuflags="-mcpu=$cpu"
4825
4826 elif enabled mips; then
4827
4828     cpuflags="-march=$cpu"
4829
4830     if [ "$cpu" != "generic" ]; then
4831         disable mips32r2
4832         disable mips32r5
4833         disable mips64r2
4834         disable mips32r6
4835         disable mips64r6
4836         disable loongson2
4837         disable loongson3
4838
4839         case $cpu in
4840             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4841                 enable mips32r2
4842                 disable msa
4843             ;;
4844             p5600|i6400|p6600)
4845                 disable mipsdsp
4846                 disable mipsdspr2
4847             ;;
4848             loongson*)
4849                 enable loongson2
4850                 enable loongson3
4851                 enable local_aligned
4852                 enable simd_align_16
4853                 enable fast_64bit
4854                 enable fast_clz
4855                 enable fast_cmov
4856                 enable fast_unaligned
4857                 disable aligned_stack
4858                 disable mipsdsp
4859                 disable mipsdspr2
4860                 # When gcc version less than 5.3.0, add -fno-expensive-optimizations flag.
4861                 if [ $cc == gcc ]; then
4862                     gcc_version=$(gcc -dumpversion)
4863                     if [ "$(echo "$gcc_version 5.3.0" | tr " " "\n" | sort -rV | head -n 1)" == "$gcc_version" ]; then
4864                         expensive_optimization_flag=""
4865                     else
4866                         expensive_optimization_flag="-fno-expensive-optimizations"
4867                     fi
4868                 fi
4869                 case $cpu in
4870                     loongson3*)
4871                         cpuflags="-march=loongson3a -mhard-float $expensive_optimization_flag"
4872                     ;;
4873                     loongson2e)
4874                         cpuflags="-march=loongson2e -mhard-float $expensive_optimization_flag"
4875                     ;;
4876                     loongson2f)
4877                         cpuflags="-march=loongson2f -mhard-float $expensive_optimization_flag"
4878                     ;;
4879                 esac
4880             ;;
4881             *)
4882                 # Unknown CPU. Disable everything.
4883                 warn "unknown CPU. Disabling all MIPS optimizations."
4884                 disable mipsfpu
4885                 disable mipsdsp
4886                 disable mipsdspr2
4887                 disable msa
4888                 disable mmi
4889             ;;
4890         esac
4891
4892         case $cpu in
4893             24kc)
4894                 disable mipsfpu
4895                 disable mipsdsp
4896                 disable mipsdspr2
4897             ;;
4898             24kf*)
4899                 disable mipsdsp
4900                 disable mipsdspr2
4901             ;;
4902             24kec|34kc|1004kc)
4903                 disable mipsfpu
4904                 disable mipsdspr2
4905             ;;
4906             24kef*|34kf*|1004kf*)
4907                 disable mipsdspr2
4908             ;;
4909             74kc)
4910                 disable mipsfpu
4911             ;;
4912             p5600)
4913                 enable mips32r5
4914                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4915             ;;
4916             i6400)
4917                 enable mips64r6
4918                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4919             ;;
4920             p6600)
4921                 enable mips64r6
4922                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4923             ;;
4924         esac
4925     else
4926         # We do not disable anything. Is up to the user to disable the unwanted features.
4927         warn 'generic cpu selected'
4928     fi
4929
4930 elif enabled ppc; then
4931
4932     disable ldbrx
4933
4934     case $(tolower $cpu) in
4935         601|ppc601|powerpc601)
4936             cpuflags="-mcpu=601"
4937             disable altivec
4938         ;;
4939         603*|ppc603*|powerpc603*)
4940             cpuflags="-mcpu=603"
4941             disable altivec
4942         ;;
4943         604*|ppc604*|powerpc604*)
4944             cpuflags="-mcpu=604"
4945             disable altivec
4946         ;;
4947         g3|75*|ppc75*|powerpc75*)
4948             cpuflags="-mcpu=750"
4949             disable altivec
4950         ;;
4951         g4|745*|ppc745*|powerpc745*)
4952             cpuflags="-mcpu=7450"
4953             disable vsx
4954         ;;
4955         74*|ppc74*|powerpc74*)
4956             cpuflags="-mcpu=7400"
4957             disable vsx
4958         ;;
4959         g5|970|ppc970|powerpc970)
4960             cpuflags="-mcpu=970"
4961             disable vsx
4962         ;;
4963         power[3-6]*)
4964             cpuflags="-mcpu=$cpu"
4965             disable vsx
4966         ;;
4967         power[7-8]*)
4968             cpuflags="-mcpu=$cpu"
4969         ;;
4970         cell)
4971             cpuflags="-mcpu=cell"
4972             enable ldbrx
4973             disable vsx
4974         ;;
4975         e500mc)
4976             cpuflags="-mcpu=e500mc"
4977             disable altivec
4978         ;;
4979         e500v2)
4980             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4981             disable altivec
4982             disable dcbzl
4983         ;;
4984         e500)
4985             cpuflags="-mcpu=8540 -mhard-float"
4986             disable altivec
4987             disable dcbzl
4988         ;;
4989     esac
4990
4991 elif enabled sparc; then
4992
4993     case $cpu in
4994         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4995             cpuflags="-mcpu=$cpu"
4996         ;;
4997         ultrasparc*|niagara[234])
4998             cpuflags="-mcpu=$cpu"
4999         ;;
5000     esac
5001
5002 elif enabled x86; then
5003
5004     case $cpu in
5005         i[345]86|pentium)
5006             cpuflags="-march=$cpu"
5007             disable i686
5008             disable mmx
5009         ;;
5010         # targets that do NOT support nopl and conditional mov (cmov)
5011         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
5012             cpuflags="-march=$cpu"
5013             disable i686
5014         ;;
5015         # targets that do support nopl and conditional mov (cmov)
5016         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
5017         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
5018         |amdfam10|barcelona|b[dt]ver*|znver*)
5019             cpuflags="-march=$cpu"
5020             enable i686
5021             enable fast_cmov
5022         ;;
5023         # targets that do support conditional mov but on which it's slow
5024         pentium4|pentium4m|prescott|nocona)
5025             cpuflags="-march=$cpu"
5026             enable i686
5027             disable fast_cmov
5028         ;;
5029     esac
5030
5031 fi
5032
5033 if [ "$cpu" != generic ]; then
5034     add_cflags  $cpuflags
5035     add_asflags $cpuflags
5036     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
5037 fi
5038
5039 # compiler sanity check
5040 test_exec <<EOF
5041 int main(void){ return 0; }
5042 EOF
5043 if test "$?" != 0; then
5044     echo "$cc is unable to create an executable file."
5045     if test -z "$cross_prefix" && ! enabled cross_compile ; then
5046         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
5047         echo "Only do this if you know what cross compiling means."
5048     fi
5049     die "C compiler test failed."
5050 fi
5051
5052 add_cppflags -D_ISOC99_SOURCE
5053 add_cxxflags -D__STDC_CONSTANT_MACROS
5054 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
5055
5056 # some compilers silently accept -std=c11, so we also need to check that the
5057 # version macro is defined properly
5058 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
5059     add_cflags -std=c11 ||
5060     check_cflags -std=c99
5061
5062 check_cppflags -D_FILE_OFFSET_BITS=64
5063 check_cppflags -D_LARGEFILE_SOURCE
5064
5065 add_host_cppflags -D_ISOC99_SOURCE
5066 check_host_cflags -std=c99
5067 check_host_cflags -Wall
5068 check_host_cflags $host_cflags_speed
5069
5070 check_64bit(){
5071     arch32=$1
5072     arch64=$2
5073     expr=${3:-'sizeof(void *) > 4'}
5074     test_code cc "" "int test[2*($expr) - 1]" &&
5075         subarch=$arch64 || subarch=$arch32
5076     enable $subarch
5077 }
5078
5079 case "$arch" in
5080     aarch64|alpha|ia64)
5081         enabled shared && enable_weak pic
5082     ;;
5083     mips)
5084         check_64bit mips mips64 '_MIPS_SIM > 1'
5085         enabled shared && enable_weak pic
5086     ;;
5087     parisc)
5088         check_64bit parisc parisc64
5089         enabled shared && enable_weak pic
5090     ;;
5091     ppc)
5092         check_64bit ppc ppc64
5093         enabled shared && enable_weak pic
5094     ;;
5095     s390)
5096         check_64bit s390 s390x
5097         enabled shared && enable_weak pic
5098     ;;
5099     sparc)
5100         check_64bit sparc sparc64
5101         enabled shared && enable_weak pic
5102     ;;
5103     x86)
5104         check_64bit x86_32 x86_64
5105         # Treat x32 as x64 for now. Note it also needs pic if shared
5106         test "$subarch" = "x86_32" && test_cpp_condition stddef.h 'defined(__x86_64__)' &&
5107             subarch=x86_64 && enable x86_64 && disable x86_32
5108         if enabled x86_64; then
5109             enabled shared && enable_weak pic
5110             objformat=elf64
5111         fi
5112     ;;
5113 esac
5114
5115 # OS specific
5116 case $target_os in
5117     aix)
5118         SHFLAGS=-shared
5119         add_cppflags '-I\$(SRC_PATH)/compat/aix'
5120         enabled shared && add_ldflags -Wl,-brtl
5121         arflags='-Xany -r -c'
5122         striptype=""
5123         ;;
5124     android)
5125         disable symver
5126         enable section_data_rel_ro
5127         add_cflags -fPIE
5128         add_ldexeflags -fPIE -pie
5129         SLIB_INSTALL_NAME='$(SLIBNAME)'
5130         SLIB_INSTALL_LINKS=
5131         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
5132         ;;
5133     haiku)
5134         prefix_default="/boot/common"
5135         network_extralibs="-lnetwork"
5136         host_extralibs=
5137         ;;
5138     sunos)
5139         SHFLAGS='-shared -Wl,-h,$$(@F)'
5140         enabled x86 && append SHFLAGS -mimpure-text
5141         network_extralibs="-lsocket -lnsl"
5142         add_cppflags -D__EXTENSIONS__
5143         # When using suncc to build, the Solaris linker will mark
5144         # an executable with each instruction set encountered by
5145         # the Solaris assembler.  As our libraries contain their own
5146         # guards for processor-specific code, instead suppress
5147         # generation of the HWCAPS ELF section on Solaris x86 only.
5148         enabled_all suncc x86 &&
5149             echo "hwcap_1 = OVERRIDE;" > mapfile &&
5150             add_ldflags -Wl,-M,mapfile
5151         nm_default='nm -P -g'
5152         striptype=""
5153         version_script='-M'
5154         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
5155         ;;
5156     netbsd)
5157         disable symver
5158         oss_indev_extralibs="-lossaudio"
5159         oss_outdev_extralibs="-lossaudio"
5160         enabled gcc || check_ldflags -Wl,-zmuldefs
5161         ;;
5162     openbsd|bitrig)
5163         disable symver
5164         striptype=""
5165         SHFLAGS='-shared'
5166         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
5167         SLIB_INSTALL_LINKS=
5168         oss_indev_extralibs="-lossaudio"
5169         oss_outdev_extralibs="-lossaudio"
5170         ;;
5171     dragonfly)
5172         disable symver
5173         ;;
5174     freebsd)
5175         ;;
5176     bsd/os)
5177         add_extralibs -lpoll -lgnugetopt
5178         strip="strip -d"
5179         ;;
5180     darwin)
5181         enabled ppc && add_asflags -force_cpusubtype_ALL
5182         install_name_dir_default='$(SHLIBDIR)'
5183         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
5184         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
5185         strip="${strip} -x"
5186         add_ldflags -Wl,-dynamic,-search_paths_first
5187         check_cflags -Werror=partial-availability
5188         SLIBSUF=".dylib"
5189         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
5190         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
5191         enabled x86_64 && objformat="macho64" || objformat="macho32"
5192         enabled_any pic shared x86_64 ||
5193             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
5194         check_headers dispatch/dispatch.h &&
5195             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
5196         if test -n "$sysroot"; then
5197             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
5198             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
5199         fi
5200         version_script='-exported_symbols_list'
5201         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
5202         ;;
5203     msys*)
5204         die "Native MSYS builds are discouraged, please use the MINGW environment."
5205         ;;
5206     mingw32*|mingw64*)
5207         target_os=mingw32
5208         LIBTARGET=i386
5209         if enabled x86_64; then
5210             LIBTARGET="i386:x86-64"
5211         elif enabled arm; then
5212             LIBTARGET="arm"
5213         elif enabled aarch64; then
5214             LIBTARGET="arm64"
5215         fi
5216         if enabled shared; then
5217             # Cannot build both shared and static libs when using dllimport.
5218             disable static
5219         fi
5220         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5221         enabled x86_32 && check_ldflags -Wl,--large-address-aware
5222         shlibdir_default="$bindir_default"
5223         SLIBPREF=""
5224         SLIBSUF=".dll"
5225         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5226         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5227         if test_cmd lib.exe -list; then
5228             SLIB_EXTRA_CMD=-'lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5229             if enabled x86_64; then
5230                 LIBTARGET=x64
5231             fi
5232         else
5233             SLIB_EXTRA_CMD=-'$(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
5234         fi
5235         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5236         SLIB_INSTALL_LINKS=
5237         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5238         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5239         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5240         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--disable-auto-image-base $$(@:$(SLIBSUF)=.def)'
5241         enabled x86_64 && objformat="win64" || objformat="win32"
5242         dlltool="${cross_prefix}dlltool"
5243         ranlib=:
5244         enable dos_paths
5245         check_ldflags -Wl,--nxcompat,--dynamicbase
5246         # Lets work around some stupidity in binutils.
5247         # ld will strip relocations from executables even though we need them
5248         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
5249         # however ld then forgets what the entry point should be (oops) so we
5250         # have to manually (re)set it.
5251         if enabled x86_32; then
5252             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
5253         elif enabled x86_64; then
5254             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
5255             check_ldflags -Wl,--high-entropy-va # binutils 2.25
5256             # Set image base >4GB for extra entropy with HEASLR
5257             add_ldexeflags -Wl,--image-base,0x140000000
5258             append SHFLAGS -Wl,--image-base,0x180000000
5259         fi
5260         ;;
5261     win32|win64)
5262         disable symver
5263         if enabled shared; then
5264             # Link to the import library instead of the normal static library
5265             # for shared libs.
5266             LD_LIB='%.lib'
5267             # Cannot build both shared and static libs with MSVC or icl.
5268             disable static
5269         fi
5270         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
5271         shlibdir_default="$bindir_default"
5272         SLIBPREF=""
5273         SLIBSUF=".dll"
5274         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5275         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5276         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5277         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5278         SLIB_INSTALL_LINKS=
5279         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5280         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5281         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5282         enabled x86_64 && objformat="win64" || objformat="win32"
5283         ranlib=:
5284         enable dos_paths
5285         ;;
5286     cygwin*)
5287         target_os=cygwin
5288         shlibdir_default="$bindir_default"
5289         SLIBPREF="cyg"
5290         SLIBSUF=".dll"
5291         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5292         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5293         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5294         SLIB_INSTALL_LINKS=
5295         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5296         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5297         enabled x86_64 && objformat="win64" || objformat="win32"
5298         enable dos_paths
5299         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5300         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5301         ;;
5302     *-dos|freedos|opendos)
5303         network_extralibs="-lsocket"
5304         objformat="coff"
5305         enable dos_paths
5306         ;;
5307     linux)
5308         enable section_data_rel_ro
5309         enabled_any arm aarch64 && enable_weak linux_perf
5310         ;;
5311     irix*)
5312         target_os=irix
5313         ranlib="echo ignoring ranlib"
5314         ;;
5315     os/2*)
5316         strip="lxlite -CS"
5317         striptype=""
5318         objformat="aout"
5319         add_cppflags -D_GNU_SOURCE
5320         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5321         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5322         LIBSUF="_s.a"
5323         SLIBPREF=""
5324         SLIBSUF=".dll"
5325         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5326         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5327         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5328             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5329             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5330             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5331             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5332         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5333             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5334         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5335         SLIB_INSTALL_LINKS=
5336         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5337         enable dos_paths
5338         enable_weak os2threads
5339         ;;
5340     gnu/kfreebsd)
5341         add_cppflags -D_BSD_SOURCE
5342         ;;
5343     gnu)
5344         ;;
5345     qnx)
5346         add_cppflags -D_QNX_SOURCE
5347         network_extralibs="-lsocket"
5348         ;;
5349     symbian)
5350         SLIBSUF=".dll"
5351         enable dos_paths
5352         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5353         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5354         add_ldflags -Wl,--target1-abs,--no-undefined \
5355                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5356                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5357         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5358                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5359                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5360         ;;
5361     minix)
5362         ;;
5363     none)
5364         ;;
5365     *)
5366         die "Unknown OS '$target_os'."
5367         ;;
5368 esac
5369
5370 # test if creating links works
5371 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5372 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5373 mkdir "$link_dest"
5374 $ln_s "$link_dest" "$link_name"
5375 touch "$link_dest/test_file"
5376 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5377     # create link to source path
5378     [ -e src ] && rm src
5379     $ln_s "$source_path" src
5380     source_link=src
5381 else
5382     # creating directory links doesn't work
5383     # fall back to using the full source path
5384     source_link="$source_path"
5385 fi
5386 # cleanup
5387 rm -r "$link_dest"
5388 rm -r "$link_name"
5389
5390 # determine libc flavour
5391
5392 probe_libc(){
5393     pfx=$1
5394     pfx_no_=${pfx%_}
5395     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5396     if test_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5397         eval ${pfx}libc_type=uclibc
5398         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5399     elif test_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5400         eval ${pfx}libc_type=glibc
5401         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5402     # MinGW headers can be installed on Cygwin, so check for newlib first.
5403     elif test_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5404         eval ${pfx}libc_type=newlib
5405         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5406     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5407     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5408         eval ${pfx}libc_type=mingw64
5409         if test_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5410             add_compat msvcrt/snprintf.o
5411             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5412         fi
5413         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5414         eval test \$${pfx_no_}cc_type = "gcc" &&
5415             add_${pfx}cppflags -D__printf__=__gnu_printf__
5416         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5417             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5418     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5419          test_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5420         eval ${pfx}libc_type=mingw32
5421         test_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5422             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5423             die "ERROR: MinGW32 runtime version must be >= 3.15."
5424         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5425         test_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5426             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5427         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5428             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5429         eval test \$${pfx_no_}cc_type = "gcc" &&
5430             add_${pfx}cppflags -D__printf__=__gnu_printf__
5431     elif test_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5432         eval ${pfx}libc_type=msvcrt
5433         if test_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5434             if [ "$pfx" = host_ ]; then
5435                 add_host_cppflags -Dsnprintf=_snprintf
5436             else
5437                 add_compat strtod.o strtod=avpriv_strtod
5438                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5439                                              _snprintf=avpriv_snprintf  \
5440                                              vsnprintf=avpriv_vsnprintf
5441             fi
5442         fi
5443         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5444         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5445         # 0x601 by default unless something else is set by the user.
5446         # This can easily lead to us detecting functions only present
5447         # in such new versions and producing binaries requiring windows 7.0.
5448         # Therefore explicitly set the default to Vista unless the user has
5449         # set something else on the command line.
5450         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5451         # family. For these cases, configure is free to use any functions
5452         # found in the SDK headers by default. (Alternatively, we could force
5453         # _WIN32_WINNT to 0x0602 in that case.)
5454         test_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5455             { test_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0600; }
5456 #ifdef WINAPI_FAMILY
5457 #include <winapifamily.h>
5458 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5459 #error not desktop
5460 #endif
5461 #endif
5462 EOF
5463         if [ "$pfx" = "" ]; then
5464             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5465             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5466         fi
5467     elif test_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5468         eval ${pfx}libc_type=klibc
5469     elif test_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5470         eval ${pfx}libc_type=bionic
5471     elif test_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5472         eval ${pfx}libc_type=solaris
5473         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5474     elif test_${pfx}cpp_condition sys/version.h "defined __DJGPP__"; then
5475         eval ${pfx}libc_type=djgpp
5476         add_cppflags -U__STRICT_ANSI__
5477         add_cflags "-include $source_path/compat/djgpp/math.h"
5478         add_compat djgpp/math.o
5479     fi
5480     test_${pfx}cc <<EOF
5481 #include <time.h>
5482 void *v = localtime_r;
5483 EOF
5484 test "$?" != 0 && test_${pfx}cc -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 <<EOF && add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5485 #include <time.h>
5486 void *v = localtime_r;
5487 EOF
5488
5489     eval test -n "\${${pfx}libc_type}" && enable ${pfx}libc_${libc_type}
5490 }
5491
5492 probe_libc
5493 probe_libc host_
5494
5495 # hacks for compiler/libc/os combinations
5496
5497 case $libc_type in
5498     bionic)
5499         add_compat strtod.o strtod=avpriv_strtod
5500         ;;
5501 esac
5502
5503 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5504     add_cppflags '-I\$(SRC_PATH)/compat/float'
5505
5506 test_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5507
5508 set_default libdir
5509 : ${shlibdir_default:="$libdir"}
5510 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5511
5512 set_default $PATHS_LIST
5513 set_default nm
5514
5515 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5516
5517 enable_weak_pic() {
5518     disabled pic && return
5519     enable pic
5520     add_cppflags -DPIC
5521     case "$target_os" in
5522     mingw*|cygwin*|win*)
5523         ;;
5524     *)
5525         add_cflags -fPIC
5526         add_asflags -fPIC
5527         ;;
5528     esac
5529 }
5530
5531 enabled pic && enable_weak_pic
5532
5533 test_cc <<EOF || die "Symbol mangling check failed."
5534 int ff_extern;
5535 EOF
5536 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5537 extern_prefix=${sym%%ff_extern*}
5538
5539 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
5540
5541 for restrict_keyword in restrict __restrict__ __restrict ""; do
5542     test_code cc "" "char * $restrict_keyword p" && break
5543 done
5544
5545 check_cc pragma_deprecated "" '_Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"")'
5546
5547 # The global variable ensures the bits appear unchanged in the object file.
5548 test_cc <<EOF || die "endian test failed"
5549 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5550 EOF
5551 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5552
5553 check_cc const_nan math.h "struct { double d; } static const bar[] = { { NAN } }"
5554
5555 if ! enabled ppc64 || enabled bigendian; then
5556     disable vsx
5557 fi
5558
5559 check_gas() {
5560     log "check_gas using '$as' as AS"
5561     # :vararg is used on aarch64, arm and ppc altivec
5562     check_as vararg "
5563 .macro m n, y:vararg=0
5564 \n: .int \y
5565 .endm
5566 m x" || return 1
5567     # .altmacro is only used in arm asm
5568     ! enabled arm || check_as gnu_as ".altmacro"
5569 }
5570
5571 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5572     nogas=:
5573     enabled_any arm aarch64 && nogas=die
5574     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5575     as_noop=-v
5576
5577     case $as_type in
5578         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5579         gcc)  gaspp_as_type=gas ;;
5580         *)    gaspp_as_type=$as_type ;;
5581     esac
5582
5583     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5584
5585     test "${as#*gas-preprocessor.pl}" != "$as" ||
5586     test_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5587         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5588
5589     if ! check_gas ; then
5590         as=${gas:=$as}
5591         check_gas || \
5592             $nogas "GNU assembler not found, install/update gas-preprocessor"
5593     fi
5594
5595     check_as as_func ".func test
5596                       .endfunc"
5597 fi
5598
5599 check_inline_asm inline_asm_labels '"1:\n"'
5600
5601 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5602
5603 if enabled aarch64; then
5604     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5605     # internal assembler in clang 3.3 does not support this instruction
5606     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5607     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5608
5609     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5610
5611 elif enabled alpha; then
5612
5613     check_cflags -mieee
5614
5615 elif enabled arm; then
5616
5617     enabled msvc && check_cpp_condition thumb stddef.h "defined _M_ARMT"
5618     test_cpp_condition stddef.h "defined __thumb__" && test_cc <<EOF && enable_weak thumb
5619 float func(float a, float b){ return a+b; }
5620 EOF
5621     enabled thumb && check_cflags -mthumb || check_cflags -marm
5622
5623     if check_cpp_condition vfp_args stddef.h "defined __ARM_PCS_VFP"; then
5624         :
5625     elif check_cpp_condition vfp_args stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5626         :
5627     elif ! test_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5628         case "${cross_prefix:-$cc}" in
5629             *hardfloat*) enable vfp_args; fpabi=vfp ;;
5630             *) check_ld "cc" vfp_args <<EOF && fpabi=vfp || fpabi=soft ;;
5631 __asm__ (".eabi_attribute 28, 1");
5632 int main(void) { return 0; }
5633 EOF
5634         esac
5635         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5636     fi
5637
5638     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5639     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5640     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5641     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5642     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5643     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5644     enabled setend  && check_insn setend  'setend be'
5645
5646     [ $target_os = linux ] || [ $target_os = android ] ||
5647         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5648             $ARCH_EXT_LIST_ARM
5649
5650     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5651
5652     check_as as_arch_directive ".arch armv7-a"
5653     check_as as_dn_directive   "ra .dn d0.i16"
5654     check_as as_fpu_directive  ".fpu neon"
5655
5656     # llvm's integrated assembler supports .object_arch from llvm 3.5
5657     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5658         check_as as_object_arch ".object_arch armv4"
5659
5660     # MS armasm fails to assemble our PIC constructs
5661     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5662
5663 elif enabled mips; then
5664
5665     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5666     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5667     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5668
5669     # Enable minimum ISA based on selected options
5670     if enabled mips64; then
5671         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5672         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5673         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5674     else
5675         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5676         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5677         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5678         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5679     fi
5680
5681     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5682     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5683     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_headers msa.h || disable msa
5684     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5685     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5686
5687     if enabled bigendian && enabled msa; then
5688         disable msa
5689     fi
5690
5691 elif enabled parisc; then
5692
5693     if enabled gcc; then
5694         case $($cc -dumpversion) in
5695             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5696         esac
5697     fi
5698
5699 elif enabled ppc; then
5700
5701     enable local_aligned
5702
5703     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5704     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5705     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5706     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5707
5708     if enabled altivec; then
5709         check_cflags -maltivec -mabi=altivec
5710
5711         # check if our compiler supports Motorola AltiVec C API
5712         check_cc altivec altivec.h "vector signed int v1 = (vector signed int) { 0 };
5713                                     vector signed int v2 = (vector signed int) { 1 };
5714                                     v1 = vec_add(v1, v2);"
5715
5716         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5717     fi
5718
5719     if enabled vsx; then
5720         check_cflags -mvsx &&
5721         check_cc vsx altivec.h "int v[4] = { 0 };
5722                                 vector signed int v1 = vec_vsx_ld(0, v);"
5723     fi
5724
5725     if enabled power8; then
5726         check_cpp_condition power8 "altivec.h" "defined(_ARCH_PWR8)"
5727     fi
5728
5729 elif enabled x86; then
5730
5731     check_builtin rdtsc    intrin.h   "__rdtsc()"
5732     check_builtin mm_empty mmintrin.h "_mm_empty()"
5733
5734     enable local_aligned
5735
5736     # check whether EBP is available on x86
5737     # As 'i' is stored on the stack, this program will crash
5738     # if the base pointer is used to access it because the
5739     # base pointer is cleared in the inline assembly code.
5740     check_exec_crash <<EOF && enable ebp_available
5741 volatile int i=0;
5742 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5743 return i;
5744 EOF
5745
5746     # check whether EBX is available on x86
5747     check_inline_asm ebx_available '""::"b"(0)' &&
5748         check_inline_asm ebx_available '"":::"%ebx"'
5749
5750     # check whether xmm clobbers are supported
5751     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5752
5753     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5754         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5755
5756     # check whether binutils is new enough to compile SSSE3/MMXEXT
5757     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5758     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5759
5760     probe_x86asm(){
5761         x86asmexe_probe=$1
5762         if test_cmd $x86asmexe_probe -v; then
5763             x86asmexe=$x86asmexe_probe
5764             x86asm_type=nasm
5765             x86asm_debug="-g -F dwarf"
5766             X86ASMDEP=
5767             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5768         elif test_cmd $x86asmexe_probe --version; then
5769             x86asmexe=$x86asmexe_probe
5770             x86asm_type=yasm
5771             x86asm_debug="-g dwarf2"
5772             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
5773             X86ASM_DEPFLAGS=
5774         fi
5775         check_x86asm x86asm "movbe ecx, [5]"
5776     }
5777
5778     if ! disabled_any asm mmx x86asm; then
5779         disable x86asm
5780         for program in $x86asmexe nasm yasm; do
5781             probe_x86asm $program && break
5782         done
5783         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
5784         X86ASMFLAGS="-f $objformat"
5785         enabled pic               && append X86ASMFLAGS "-DPIC"
5786         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
5787         case "$objformat" in
5788             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
5789         esac
5790
5791         check_x86asm avx512_external "vmovdqa32 [eax]{k1}{z}, zmm0"
5792         check_x86asm avx2_external   "vextracti128 xmm0, ymm0, 0"
5793         check_x86asm xop_external    "vpmacsdd xmm0, xmm1, xmm2, xmm3"
5794         check_x86asm fma4_external   "vfmaddps ymm0, ymm1, ymm2, ymm3"
5795         check_x86asm cpunop          "CPU amdnop"
5796     fi
5797
5798     case "$cpu" in
5799         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5800             disable fast_clz
5801         ;;
5802     esac
5803
5804 fi
5805
5806 check_cc intrinsics_neon arm_neon.h "int16x8_t test = vdupq_n_s16(0)"
5807
5808 check_ldflags -Wl,--as-needed
5809 check_ldflags -Wl,-z,noexecstack
5810
5811 if ! disabled network; then
5812     check_func getaddrinfo $network_extralibs
5813     check_func inet_aton $network_extralibs
5814
5815     check_type netdb.h "struct addrinfo"
5816     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5817     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5818     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5819     check_type poll.h "struct pollfd"
5820     check_type netinet/sctp.h "struct sctp_event_subscribe"
5821     check_struct "sys/socket.h" "struct msghdr" msg_flags
5822     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5823     check_type netinet/in.h "struct sockaddr_in6"
5824     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5825     check_type "sys/types.h sys/socket.h" socklen_t
5826
5827     # Prefer arpa/inet.h over winsock2
5828     if check_headers arpa/inet.h ; then
5829         check_func closesocket
5830     elif check_headers winsock2.h ; then
5831         check_func_headers winsock2.h closesocket -lws2 &&
5832             network_extralibs="-lws2" ||
5833         { check_func_headers winsock2.h closesocket -lws2_32 &&
5834             network_extralibs="-lws2_32"; } || disable winsock2_h network
5835         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5836
5837         check_type ws2tcpip.h socklen_t
5838         check_type ws2tcpip.h "struct addrinfo"
5839         check_type ws2tcpip.h "struct group_source_req"
5840         check_type ws2tcpip.h "struct ip_mreq_source"
5841         check_type ws2tcpip.h "struct ipv6_mreq"
5842         check_type winsock2.h "struct pollfd"
5843         check_struct winsock2.h "struct sockaddr" sa_len
5844         check_type ws2tcpip.h "struct sockaddr_in6"
5845         check_type ws2tcpip.h "struct sockaddr_storage"
5846     else
5847         disable network
5848     fi
5849 fi
5850
5851 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5852 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5853 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5854 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5855 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5856 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5857 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5858
5859 case "$custom_allocator" in
5860     jemalloc)
5861         # jemalloc by default does not use a prefix
5862         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5863     ;;
5864     tcmalloc)
5865         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
5866         malloc_prefix=tc_
5867     ;;
5868 esac
5869
5870 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5871 check_func  ${malloc_prefix}memalign            && enable memalign
5872 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5873
5874 check_func  access
5875 check_func_headers stdlib.h arc4random
5876 check_lib   clock_gettime time.h clock_gettime || check_lib clock_gettime time.h clock_gettime -lrt
5877 check_func  fcntl
5878 check_func  fork
5879 check_func  gethrtime
5880 check_func  getopt
5881 check_func  getrusage
5882 check_func  gettimeofday
5883 check_func  isatty
5884 check_func  mkstemp
5885 check_func  mmap
5886 check_func  mprotect
5887 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5888 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
5889 check_func  sched_getaffinity
5890 check_func  setrlimit
5891 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5892 check_func  strerror_r
5893 check_func  sysconf
5894 check_func  sysctl
5895 check_func  usleep
5896
5897 check_func_headers conio.h kbhit
5898 check_func_headers io.h setmode
5899 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5900 check_func_headers mach/mach_time.h mach_absolute_time
5901 check_func_headers stdlib.h getenv
5902 check_func_headers sys/stat.h lstat
5903
5904 check_func_headers windows.h GetProcessAffinityMask
5905 check_func_headers windows.h GetProcessTimes
5906 check_func_headers windows.h GetSystemTimeAsFileTime
5907 check_func_headers windows.h LoadLibrary
5908 check_func_headers windows.h MapViewOfFile
5909 check_func_headers windows.h PeekNamedPipe
5910 check_func_headers windows.h SetConsoleTextAttribute
5911 check_func_headers windows.h SetConsoleCtrlHandler
5912 check_func_headers windows.h Sleep
5913 check_func_headers windows.h VirtualAlloc
5914 check_func_headers glob.h glob
5915 enabled xlib &&
5916     check_lib xlib "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5917
5918 check_headers direct.h
5919 check_headers dirent.h
5920 check_headers dxgidebug.h
5921 check_headers dxva.h
5922 check_headers dxva2api.h -D_WIN32_WINNT=0x0600
5923 check_headers io.h
5924 check_headers linux/perf_event.h
5925 check_headers libcrystalhd/libcrystalhd_if.h
5926 check_headers malloc.h
5927 check_headers net/udplite.h
5928 check_headers poll.h
5929 check_headers sys/param.h
5930 check_headers sys/resource.h
5931 check_headers sys/select.h
5932 check_headers sys/time.h
5933 check_headers sys/un.h
5934 check_headers termios.h
5935 check_headers unistd.h
5936 check_headers valgrind/valgrind.h
5937 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5938 check_headers windows.h
5939 check_headers X11/extensions/XvMClib.h
5940 check_headers asm/types.h
5941
5942 # it seems there are versions of clang in some distros that try to use the
5943 # gcc headers, which explodes for stdatomic
5944 # so we also check that atomics actually work here
5945 check_builtin stdatomic stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0); foo += bar"
5946
5947 check_lib advapi32 "windows.h"            RegCloseKey          -ladvapi32
5948 check_lib bcrypt   "windows.h bcrypt.h"   BCryptGenRandom      -lbcrypt &&
5949     check_cpp_condition bcrypt bcrypt.h "defined BCRYPT_RNG_ALGORITHM"
5950 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
5951 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
5952 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
5953
5954 check_lib android android/native_window.h ANativeWindow_acquire -landroid
5955 check_lib mediandk "stdint.h media/NdkImage.h" AImage_delete -lmediandk
5956 check_lib camera2ndk "stdbool.h stdint.h camera/NdkCameraManager.h" ACameraManager_create -lcamera2ndk
5957
5958 enabled appkit       && check_apple_framework AppKit
5959 enabled audiotoolbox && check_apple_framework AudioToolbox
5960 enabled avfoundation && check_apple_framework AVFoundation
5961 enabled coreimage    && check_apple_framework CoreImage
5962 enabled videotoolbox && check_apple_framework VideoToolbox
5963
5964 check_apple_framework CoreFoundation
5965 check_apple_framework CoreMedia
5966 check_apple_framework CoreVideo
5967
5968 enabled avfoundation && {
5969     disable coregraphics applicationservices
5970     check_lib coregraphics        CoreGraphics/CoreGraphics.h               CGGetActiveDisplayList "-framework CoreGraphics" ||
5971     check_lib applicationservices ApplicationServices/ApplicationServices.h CGGetActiveDisplayList "-framework ApplicationServices"; }
5972
5973 enabled videotoolbox && {
5974     check_lib coreservices CoreServices/CoreServices.h UTGetOSTypeFromString "-framework CoreServices"
5975     check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_HEVC "-framework CoreMedia"
5976 }
5977
5978 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5979
5980 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5981 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5982 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5983 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5984 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5985
5986 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
5987 check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
5988 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5989 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5990 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
5991 check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
5992
5993 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5994
5995 if ! disabled ffnvcodec; then
5996     check_pkg_config ffnvcodec "ffnvcodec >= 8.1.24.2" \
5997           "ffnvcodec/nvEncodeAPI.h ffnvcodec/dynlink_cuda.h ffnvcodec/dynlink_cuviddec.h ffnvcodec/dynlink_nvcuvid.h" "" || \
5998       check_pkg_config ffnvcodec "ffnvcodec >= 8.0.14.2 ffnvcodec < 8.1" \
5999           "ffnvcodec/nvEncodeAPI.h ffnvcodec/dynlink_cuda.h ffnvcodec/dynlink_cuviddec.h ffnvcodec/dynlink_nvcuvid.h" ""
6000 fi
6001
6002 check_cpp_condition winrt windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)"
6003
6004 if ! disabled w32threads && ! enabled pthreads; then
6005     check_func_headers "windows.h process.h" _beginthreadex &&
6006         check_type "windows.h" CONDITION_VARIABLE &&
6007         check_type "windows.h" INIT_ONCE &&
6008         enable w32threads || disable w32threads
6009     if ! enabled w32threads && enabled winrt; then
6010         check_func_headers "windows.h" CreateThread &&
6011             enable w32threads || disable w32threads
6012     fi
6013 fi
6014
6015 # check for some common methods of building with pthread support
6016 # do this before the optional library checks as some of them require pthreads
6017 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
6018     if check_lib pthreads pthread.h pthread_join   -pthread &&
6019        check_lib pthreads pthread.h pthread_create -pthread; then
6020         add_cflags -pthread
6021     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
6022          check_lib pthreads pthread.h pthread_create -pthreads; then
6023         add_cflags -pthreads
6024     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
6025          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
6026         add_cflags -ldl -pthread
6027     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
6028          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
6029         :
6030     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
6031          check_lib pthreads pthread.h pthread_create -lpthread; then
6032         :
6033     elif check_func pthread_join && check_func pthread_create; then
6034         enable pthreads
6035     fi
6036     check_cc pthreads "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER"
6037
6038     if enabled pthreads; then
6039         check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
6040         check_func pthread_cancel $pthreads_extralibs
6041     fi
6042 fi
6043
6044 enabled  zlib && { check_pkg_config zlib zlib "zlib.h" zlibVersion ||
6045                    check_lib zlib   zlib.h      zlibVersion    -lz; }
6046 enabled bzlib && check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
6047 enabled  lzma && check_lib lzma   lzma.h lzma_version_number -llzma
6048
6049 # On some systems dynamic loading requires no extra linker flags
6050 check_lib libdl dlfcn.h "dlopen dlsym" || check_lib libdl dlfcn.h "dlopen dlsym" -ldl
6051
6052 check_lib libm math.h sin -lm
6053
6054 atan2f_args=2
6055 copysign_args=2
6056 hypot_args=2
6057 ldexpf_args=2
6058 powf_args=2
6059
6060 for func in $MATH_FUNCS; do
6061     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
6062 done
6063
6064 for func in $COMPLEX_FUNCS; do
6065     eval check_complexfunc $func \${${func}_args:-1}
6066 done
6067
6068 # these are off by default, so fail if requested and not available
6069 enabled cuda_sdk          && require cuda_sdk cuda.h cuCtxCreate -lcuda
6070 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
6071 enabled decklink          && { require_headers DeckLinkAPI.h &&
6072                                { test_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a090500" || die "ERROR: Decklink API version must be >= 10.9.5."; } }
6073 enabled libndi_newtek     && require_headers Processing.NDI.Lib.h
6074 enabled frei0r            && require_headers "frei0r.h dlfcn.h"
6075 enabled gmp               && require gmp gmp.h mpz_export -lgmp
6076 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
6077 enabled jni               && { [ $target_os = "android" ] && check_headers jni.h && enabled pthreads || die "ERROR: jni not found"; }
6078 enabled ladspa            && require_headers "ladspa.h dlfcn.h"
6079 enabled libaom            && require_pkg_config libaom "aom >= 1.0.0" aom/aom_codec.h aom_codec_version
6080 enabled lv2               && require_pkg_config lv2 lilv-0 "lilv/lilv.h" lilv_world_new
6081 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
6082 enabled libass            && require_pkg_config libass libass ass/ass.h ass_library_init
6083 enabled libbluray         && require_pkg_config libbluray libbluray libbluray/bluray.h bd_open
6084 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
6085 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
6086                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
6087                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
6088 enabled libcaca           && require_pkg_config libcaca caca caca.h caca_create_canvas
6089 enabled libcodec2         && require libcodec2 codec2/codec2.h codec2_create -lcodec2
6090 enabled libdav1d          && require_pkg_config libdav1d "dav1d >= 0.1.0" "dav1d/dav1d.h" dav1d_version
6091 enabled libdavs2          && require_pkg_config libdavs2 "davs2 >= 1.6.0" davs2.h davs2_decoder_open
6092 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
6093 enabled libdrm            && require_pkg_config libdrm libdrm xf86drm.h drmGetVersion
6094 enabled libfdk_aac        && { check_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
6095                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
6096                                  warn "using libfdk without pkg-config"; } }
6097 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"
6098 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
6099 enabled fontconfig        && enable libfontconfig
6100 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
6101 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
6102 enabled libfribidi        && require_pkg_config libfribidi fribidi fribidi.h fribidi_version_info
6103 enabled libgme            && { check_pkg_config libgme libgme gme/gme.h gme_new_emu ||
6104                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }
6105 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
6106                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
6107                                done || die "ERROR: libgsm not found"; }
6108 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc $pthreads_extralibs
6109 enabled libklvanc         && require libklvanc libklvanc/vanc.h klvanc_context_create -lklvanc
6110 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
6111 enabled liblensfun        && require_pkg_config liblensfun lensfun lensfun.h lf_db_new
6112 # While it may appear that require is being used as a pkg-config
6113 # fallback for libmfx, it is actually being used to detect a different
6114 # installation route altogether.  If libmfx is installed via the Intel
6115 # Media SDK or Intel Media Server Studio, these don't come with
6116 # pkg-config support.  Instead, users should make sure that the build
6117 # can find the libraries and headers through other means.
6118 enabled libmfx            && { check_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit ||
6119                                { require libmfx "mfx/mfxvideo.h" MFXInit "-llibmfx $advapi32_extralibs" && warn "using libmfx without pkg-config"; } }
6120 enabled libmodplug        && require_pkg_config libmodplug libmodplug libmodplug/modplug.h ModPlug_Load
6121 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame $libm_extralibs
6122 enabled libmysofa         && { check_pkg_config libmysofa libmysofa mysofa.h mysofa_load ||
6123                                require libmysofa mysofa.h mysofa_load -lmysofa $zlib_extralibs; }
6124 enabled libnpp            && { check_lib libnpp npp.h nppGetLibVersion -lnppig -lnppicc -lnppc -lnppidei ||
6125                                check_lib libnpp npp.h nppGetLibVersion -lnppi -lnppc -lnppidei ||
6126                                die "ERROR: libnpp not found"; }
6127 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
6128 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
6129 enabled libopencv         && { check_headers opencv2/core/core_c.h &&
6130                                { check_pkg_config libopencv opencv opencv2/core/core_c.h cvCreateImageHeader ||
6131                                  require libopencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
6132                                require_pkg_config libopencv opencv opencv/cxcore.h cvCreateImageHeader; }
6133 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
6134 enabled libopenjpeg       && { check_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version ||
6135                                { require_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } }
6136 enabled libopenmpt        && require_pkg_config libopenmpt "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create -lstdc++ && append libopenmpt_extralibs "-lstdc++"
6137 enabled libopus           && {
6138     enabled libopus_decoder && {
6139         require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
6140     }
6141     enabled libopus_encoder && {
6142         require_pkg_config libopus opus opus_multistream.h opus_multistream_surround_encoder_create
6143     }
6144 }
6145 enabled libpulse          && require_pkg_config libpulse libpulse pulse/pulseaudio.h pa_context_new
6146 enabled librsvg           && require_pkg_config librsvg librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
6147 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
6148 enabled librubberband     && require_pkg_config librubberband "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new -lstdc++ && append librubberband_extralibs "-lstdc++"
6149 enabled libshine          && require_pkg_config libshine shine shine/layer3.h shine_encode_buffer
6150 enabled libsmbclient      && { check_pkg_config libsmbclient smbclient libsmbclient.h smbc_init ||
6151                                require libsmbclient libsmbclient.h smbc_init -lsmbclient; }
6152 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy -lstdc++
6153 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
6154 enabled libssh            && require_pkg_config libssh libssh libssh/sftp.h sftp_init
6155 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init
6156 enabled libsrt            && require_pkg_config libsrt "srt >= 1.3.0" srt/srt.h srt_socket
6157 enabled libtensorflow     && require libtensorflow tensorflow/c/c_api.h TF_Version -ltensorflow
6158 enabled libtesseract      && require_pkg_config libtesseract tesseract tesseract/capi.h TessBaseAPICreate
6159 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
6160 enabled libtls            && require_pkg_config libtls libtls tls.h tls_configure
6161 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
6162                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
6163                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
6164 enabled libv4l2           && require_pkg_config libv4l2 libv4l2 libv4l2.h v4l2_ioctl
6165 enabled libvidstab        && require_pkg_config libvidstab "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
6166 enabled libvmaf           && require_pkg_config libvmaf "libvmaf >= 1.3.9" libvmaf.h compute_vmaf
6167 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
6168 enabled libvorbis         && require_pkg_config libvorbis vorbis vorbis/codec.h vorbis_info_init &&
6169                              require_pkg_config libvorbisenc vorbisenc vorbis/vorbisenc.h vorbis_encode_init
6170
6171 enabled libvpx            && {
6172     enabled libvpx_vp8_decoder && {
6173         check_pkg_config libvpx_vp8_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
6174             check_lib libvpx_vp8_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_dec_init_ver VPX_IMG_FMT_HIGHBITDEPTH" -lvpx ||
6175                 die "ERROR: libvpx decoder version must be >=1.4.0";
6176     }
6177     enabled libvpx_vp8_encoder && {
6178         check_pkg_config libvpx_vp8_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
6179             check_lib libvpx_vp8_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VPX_IMG_FMT_HIGHBITDEPTH" -lvpx ||
6180                 die "ERROR: libvpx encoder version must be >=1.4.0";
6181     }
6182     enabled libvpx_vp9_decoder && {
6183         check_pkg_config libvpx_vp9_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
6184             check_lib libvpx_vp9_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx VPX_IMG_FMT_HIGHBITDEPTH" "-lvpx $libm_extralibs"
6185     }
6186     enabled libvpx_vp9_encoder && {
6187         check_pkg_config libvpx_vp9_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
6188             check_lib libvpx_vp9_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VPX_IMG_FMT_HIGHBITDEPTH" "-lvpx $libm_extralibs"
6189     }
6190     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
6191         die "libvpx enabled but no supported decoders found"
6192     fi
6193 }
6194
6195 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
6196 enabled libwebp           && {
6197     enabled libwebp_encoder      && require_pkg_config libwebp "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
6198     enabled libwebp_anim_encoder && check_pkg_config libwebp_anim_encoder "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit; }
6199 enabled libx264           && { check_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode ||
6200                                { require libx264 "stdint.h x264.h" x264_encoder_encode "-lx264 $pthreads_extralibs $libm_extralibs" &&
6201                                  warn "using libx264 without pkg-config"; } } &&
6202                              require_cpp_condition libx264 x264.h "X264_BUILD >= 118" &&
6203                              check_cpp_condition libx262 x264.h "X264_MPEG2"
6204 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
6205                              require_cpp_condition libx265 x265.h "X265_BUILD >= 68"
6206 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode "-lxavs $pthreads_extralibs $libm_extralibs"
6207 enabled libxavs2          && require_pkg_config libxavs2 "xavs2 >= 1.3.0" "stdint.h xavs2.h" xavs2_api_get
6208 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
6209 enabled libzimg           && require_pkg_config libzimg "zimg >= 2.7.0" zimg.h zimg_get_api_version
6210 enabled libzmq            && require_pkg_config libzmq libzmq zmq.h zmq_ctx_new
6211 enabled libzvbi           && require_pkg_config libzvbi zvbi-0.2 libzvbi.h vbi_decoder_new &&
6212                              { test_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
6213                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
6214 enabled libxml2           && require_pkg_config libxml2 libxml-2.0 libxml2/libxml/xmlversion.h xmlCheckVersion
6215 enabled mbedtls           && { check_pkg_config mbedtls mbedtls mbedtls/x509_crt.h mbedtls_x509_crt_init ||
6216                                check_pkg_config mbedtls mbedtls mbedtls/ssl.h mbedtls_ssl_init ||
6217                                check_lib mbedtls mbedtls/ssl.h mbedtls_ssl_init -lmbedtls -lmbedx509 -lmbedcrypto ||
6218                                die "ERROR: mbedTLS not found"; }
6219 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
6220 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
6221                                { ! enabled cross_compile &&
6222                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
6223                                  add_ldflags -L/opt/vc/lib/ &&
6224                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
6225                                die "ERROR: mmal not found" &&
6226                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
6227 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
6228                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
6229                                die "ERROR: openal not found"; } &&
6230                              { test_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
6231                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
6232 enabled opencl            && { check_pkg_config opencl OpenCL CL/cl.h clEnqueueNDRangeKernel ||
6233                                check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
6234                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
6235                                die "ERROR: opencl not found"; } &&
6236                              { test_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
6237                                test_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
6238                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
6239 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
6240                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
6241                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
6242                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
6243                                die "ERROR: opengl not found."
6244                              }
6245 enabled omx               && require_headers OMX_Core.h
6246 enabled omx_rpi           && { check_headers OMX_Core.h ||
6247                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_headers OMX_Core.h ; } ||
6248                                die "ERROR: OpenMAX IL headers not found"; } && enable omx
6249 enabled openssl           && { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
6250                                check_pkg_config openssl openssl openssl/ssl.h SSL_library_init ||
6251                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
6252                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
6253                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
6254                                die "ERROR: openssl not found"; }
6255 enabled rkmpp             && { require_pkg_config rkmpp rockchip_mpp  rockchip/rk_mpi.h mpp_create &&
6256                                require_pkg_config rockchip_mpp "rockchip_mpp >= 1.3.7" rockchip/rk_mpi.h mpp_create &&
6257                                { enabled libdrm ||
6258                                  die "ERROR: rkmpp requires --enable-libdrm"; }
6259                              }
6260 enabled vapoursynth       && require_pkg_config vapoursynth "vapoursynth-script >= 42" VSScript.h vsscript_init
6261
6262
6263 if enabled gcrypt; then
6264     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
6265     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
6266         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
6267         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
6268         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
6269             die "ERROR: gcrypt not found"
6270         add_cflags $gcrypt_cflags
6271     else
6272         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
6273     fi
6274 fi
6275
6276 if enabled sdl2; then
6277     SDL2_CONFIG="${cross_prefix}sdl2-config"
6278     test_pkg_config sdl2 "sdl2 >= 2.0.1 sdl2 < 2.1.0" SDL_events.h SDL_PollEvent
6279     if disabled sdl2 && "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6280         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6281         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6282         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6283         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6284         check_func_headers SDL_events.h SDL_PollEvent $sdl2_extralibs $sdl2_cflags &&
6285             enable sdl2
6286     fi
6287     if test $target_os = "mingw32"; then
6288         sdl2_extralibs=$(filter_out '-mwindows' $sdl2_extralibs)
6289     fi
6290 fi
6291
6292 if enabled decklink; then
6293     case $target_os in
6294         mingw32*|mingw64*|win32|win64)
6295             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6296             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6297             ;;
6298     esac
6299 fi
6300
6301 enabled securetransport &&
6302     check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6303     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" ||
6304         disable securetransport
6305
6306 enabled securetransport &&
6307     check_func SecItemImport "-Wl,-framework,CoreFoundation -Wl,-framework,Security"
6308
6309 enabled schannel &&
6310     check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6311     test_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" &&
6312     schannel_extralibs="-lsecur32" ||
6313         disable schannel
6314
6315 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6316 enabled makeinfo \
6317     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6318     && enable makeinfo_html || disable makeinfo_html
6319 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6320 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6321 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6322 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6323
6324 # check V4L2 codecs available in the API
6325 check_headers linux/fb.h
6326 check_headers linux/videodev2.h
6327 test_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6328 check_cc v4l2_m2m linux/videodev2.h "int i = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_VIDEO_M2M | V4L2_BUF_FLAG_LAST;"
6329 check_cc vc1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VC1_ANNEX_G;"
6330 check_cc mpeg1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG1;"
6331 check_cc mpeg2_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG2;"
6332 check_cc mpeg4_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG4;"
6333 check_cc hevc_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_HEVC;"
6334 check_cc h263_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H263;"
6335 check_cc h264_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H264;"
6336 check_cc vp8_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP8;"
6337 check_cc vp9_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP9;"
6338
6339 check_headers sys/videoio.h
6340 test_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6341
6342 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6343 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6344 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6345 # w32api 3.12 had it defined wrong
6346 check_cpp_condition vfwcap_defines vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER"
6347
6348 check_type "dshow.h" IBaseFilter
6349
6350 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6351 check_headers "dev/bktr/ioctl_meteor.h dev/bktr/ioctl_bt848.h"                   ||
6352     check_headers "machine/ioctl_meteor.h machine/ioctl_bt848.h"                 ||
6353     check_headers "dev/video/meteor/ioctl_meteor.h dev/video/bktr/ioctl_bt848.h" ||
6354     check_headers "dev/ic/bt8xx.h"
6355
6356 if check_struct sys/soundcard.h audio_buf_info bytes; then
6357     enable_sanitized sys/soundcard.h
6358 else
6359     test_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_sanitized sys/soundcard.h
6360     #include <sys/soundcard.h>
6361     audio_buf_info abc;
6362 EOF
6363 fi
6364
6365 enabled alsa && check_pkg_config alsa alsa "alsa/asoundlib.h" snd_pcm_htimestamp ||
6366     check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
6367
6368 enabled libjack &&
6369     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
6370
6371 enabled sndio && check_lib sndio sndio.h sio_open -lsndio
6372
6373 if enabled libcdio; then
6374     check_pkg_config libcdio libcdio_paranoia "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open ||
6375     check_pkg_config libcdio libcdio_paranoia "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open ||
6376     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6377     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6378     die "ERROR: No usable libcdio/cdparanoia found"
6379 fi
6380
6381 enabled libxcb && check_pkg_config libxcb "xcb >= 1.4" xcb/xcb.h xcb_connect ||
6382     disable libxcb_shm libxcb_shape libxcb_xfixes
6383
6384 if enabled libxcb; then
6385     enabled libxcb_shm    && check_pkg_config libxcb_shm    xcb-shm    xcb/shm.h    xcb_shm_attach
6386     enabled libxcb_shape  && check_pkg_config libxcb_shape  xcb-shape  xcb/shape.h  xcb_shape_get_rectangles
6387     enabled libxcb_xfixes && check_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
6388 fi
6389
6390 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6391
6392 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6393 # the desktop api partition
6394 test_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
6395 #ifdef WINAPI_FAMILY
6396 #include <winapifamily.h>
6397 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
6398 #error desktop, not uwp
6399 #else
6400 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
6401 #endif
6402 #else
6403 #error no family set
6404 #endif
6405 EOF
6406
6407 enabled vaapi &&
6408     check_pkg_config vaapi "libva >= 0.35.0" "va/va.h" vaInitialize
6409
6410 if enabled vaapi; then
6411     check_pkg_config vaapi_drm "libva-drm" "va/va_drm.h" vaGetDisplayDRM
6412
6413     if enabled xlib; then
6414         check_pkg_config vaapi_x11 "libva-x11" "va/va_x11.h" vaGetDisplay
6415     fi
6416
6417     check_cpp_condition vaapi_1 "va/va.h" "VA_CHECK_VERSION(1, 0, 0)"
6418 fi
6419
6420 if enabled_all opencl libdrm ; then
6421     check_type "CL/cl_intel.h" "clCreateImageFromFdINTEL_fn" &&
6422         enable opencl_drm_beignet
6423     check_func_headers "CL/cl_ext.h" clImportMemoryARM &&
6424         enable opencl_drm_arm
6425 fi
6426
6427 if enabled_all opencl vaapi ; then
6428     enabled opencl_drm_beignet && enable opencl_vaapi_beignet
6429     check_type "CL/cl.h CL/va_ext.h" "clCreateFromVA_APIMediaSurfaceINTEL_fn" &&
6430         enable opencl_vaapi_intel_media
6431 fi
6432
6433 if enabled_all opencl dxva2 ; then
6434     check_type "CL/cl_dx9_media_sharing.h" cl_dx9_surface_info_khr &&
6435         enable opencl_dxva2
6436 fi
6437
6438 if enabled_all opencl d3d11va ; then
6439     check_type "CL/cl_d3d11.h" clGetDeviceIDsFromD3D11KHR_fn &&
6440         enable opencl_d3d11
6441 fi
6442
6443 enabled vdpau &&
6444     check_cpp_condition vdpau vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP"
6445
6446 enabled vdpau &&
6447     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6448
6449 enabled crystalhd && check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
6450
6451 if enabled x86; then
6452     case $target_os in
6453         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6454             ;;
6455         *)
6456             disable ffnvcodec cuvid nvdec nvenc
6457             ;;
6458     esac
6459 else
6460     disable ffnvcodec cuvid nvdec nvenc
6461 fi
6462
6463 enabled ffnvcodec && enable cuda
6464
6465 enabled nvenc &&
6466     test_cc -I$source_path <<EOF || disable nvenc
6467 #include <ffnvcodec/nvEncodeAPI.h>
6468 NV_ENCODE_API_FUNCTION_LIST flist;
6469 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6470 int main(void) { return 0; }
6471 EOF
6472
6473 enabled amf &&
6474     check_cpp_condition amf "AMF/core/Version.h" \
6475         "(AMF_VERSION_MAJOR << 48 | AMF_VERSION_MINOR << 32 | AMF_VERSION_RELEASE << 16 | AMF_VERSION_BUILD_NUM) >= 0x0001000400040001"
6476
6477 # Funny iconv installations are not unusual, so check it after all flags have been set
6478 if enabled libc_iconv; then
6479     check_func_headers iconv.h iconv
6480 elif enabled iconv; then
6481     check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6482 fi
6483
6484 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6485
6486 # add some useful compiler flags if supported
6487 check_cflags -Wdeclaration-after-statement
6488 check_cflags -Wall
6489 check_cflags -Wdisabled-optimization
6490 check_cflags -Wpointer-arith
6491 check_cflags -Wredundant-decls
6492 check_cflags -Wwrite-strings
6493 check_cflags -Wtype-limits
6494 check_cflags -Wundef
6495 check_cflags -Wmissing-prototypes
6496 check_cflags -Wno-pointer-to-int-cast
6497 check_cflags -Wstrict-prototypes
6498 check_cflags -Wempty-body
6499
6500 if enabled extra_warnings; then
6501     check_cflags -Wcast-qual
6502     check_cflags -Wextra
6503     check_cflags -Wpedantic
6504 fi
6505
6506 check_disable_warning(){
6507     warning_flag=-W${1#-Wno-}
6508     test_cflags $unknown_warning_flags $warning_flag && add_cflags $1
6509 }
6510
6511 test_cflags -Werror=unused-command-line-argument &&
6512     append unknown_warning_flags "-Werror=unused-command-line-argument"
6513 test_cflags -Werror=unknown-warning-option &&
6514     append unknown_warning_flags "-Werror=unknown-warning-option"
6515
6516 check_disable_warning -Wno-parentheses
6517 check_disable_warning -Wno-switch
6518 check_disable_warning -Wno-format-zero-length
6519 check_disable_warning -Wno-pointer-sign
6520 check_disable_warning -Wno-unused-const-variable
6521 check_disable_warning -Wno-bool-operation
6522 check_disable_warning -Wno-char-subscripts
6523
6524 check_disable_warning_headers(){
6525     warning_flag=-W${1#-Wno-}
6526     test_cflags $warning_flag && add_cflags_headers $1
6527 }
6528
6529 check_disable_warning_headers -Wno-deprecated-declarations
6530 check_disable_warning_headers -Wno-unused-variable
6531
6532 test_cc <<EOF && enable blocks_extension
6533 void (^block)(void);
6534 EOF
6535
6536 # add some linker flags
6537 check_ldflags -Wl,--warn-common
6538 check_ldflags -Wl,-rpath-link=:libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6539 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir && add_ldsoflags -Wl,-rpath,$libdir
6540 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6541
6542 # add some strip flags
6543 check_stripflags -x
6544
6545 enabled neon_clobber_test &&
6546     check_ldflags -Wl,--wrap,avcodec_open2              \
6547                   -Wl,--wrap,avcodec_decode_audio4      \
6548                   -Wl,--wrap,avcodec_decode_video2      \
6549                   -Wl,--wrap,avcodec_decode_subtitle2   \
6550                   -Wl,--wrap,avcodec_encode_audio2      \
6551                   -Wl,--wrap,avcodec_encode_video2      \
6552                   -Wl,--wrap,avcodec_encode_subtitle    \
6553                   -Wl,--wrap,avcodec_send_packet        \
6554                   -Wl,--wrap,avcodec_receive_packet     \
6555                   -Wl,--wrap,avcodec_send_frame         \
6556                   -Wl,--wrap,avcodec_receive_frame      \
6557                   -Wl,--wrap,swr_convert                \
6558                   -Wl,--wrap,avresample_convert ||
6559     disable neon_clobber_test
6560
6561 enabled xmm_clobber_test &&
6562     check_ldflags -Wl,--wrap,avcodec_open2              \
6563                   -Wl,--wrap,avcodec_decode_audio4      \
6564                   -Wl,--wrap,avcodec_decode_video2      \
6565                   -Wl,--wrap,avcodec_decode_subtitle2   \
6566                   -Wl,--wrap,avcodec_encode_audio2      \
6567                   -Wl,--wrap,avcodec_encode_video2      \
6568                   -Wl,--wrap,avcodec_encode_subtitle    \
6569                   -Wl,--wrap,avcodec_send_packet        \
6570                   -Wl,--wrap,avcodec_receive_packet     \
6571                   -Wl,--wrap,avcodec_send_frame         \
6572                   -Wl,--wrap,avcodec_receive_frame      \
6573                   -Wl,--wrap,swr_convert                \
6574                   -Wl,--wrap,avresample_convert         \
6575                   -Wl,--wrap,sws_scale ||
6576     disable xmm_clobber_test
6577
6578 check_ld "cc" proper_dce <<EOF
6579 extern const int array[512];
6580 static inline int func(void) { return array[0]; }
6581 int main(void) { return 0; }
6582 EOF
6583
6584 if enabled proper_dce; then
6585     echo "X { local: *; };" > $TMPV
6586     if test_ldflags -Wl,${version_script},$TMPV; then
6587         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6588         quotes='""'
6589         test_cc <<EOF && enable symver_asm_label
6590 void ff_foo(void) __asm__ ("av_foo@VERSION");
6591 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6592 EOF
6593         test_cc <<EOF && enable symver_gnu_asm
6594 __asm__(".symver ff_foo,av_foo@VERSION");
6595 void ff_foo(void) {}
6596 EOF
6597     fi
6598 fi
6599
6600 if [ -z "$optflags" ]; then
6601     if enabled small; then
6602         optflags=$cflags_size
6603     elif enabled optimizations; then
6604         optflags=$cflags_speed
6605     else
6606         optflags=$cflags_noopt
6607     fi
6608 fi
6609
6610 if [ -z "$nvccflags" ]; then
6611     nvccflags=$nvccflags_default
6612 fi
6613
6614 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6615     nvccflags="$nvccflags -m64"
6616 else
6617     nvccflags="$nvccflags -m32"
6618 fi
6619
6620 check_optflags(){
6621     check_cflags "$@"
6622     enabled lto && check_ldflags "$@"
6623 }
6624
6625 check_optflags $optflags
6626 check_optflags -fno-math-errno
6627 check_optflags -fno-signed-zeros
6628
6629 if enabled lto; then
6630     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6631     check_cflags  -flto
6632     check_ldflags -flto $cpuflags
6633     disable inline_asm_direct_symbol_refs
6634 fi
6635
6636 enabled ftrapv && check_cflags -ftrapv
6637
6638 test_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6639 int x;
6640 EOF
6641
6642
6643 if enabled icc; then
6644     # Just warnings, no remarks
6645     check_cflags -w1
6646     # -wd: Disable following warnings
6647     # 144, 167, 556: -Wno-pointer-sign
6648     # 188: enumerated type mixed with another type
6649     # 1292: attribute "foo" ignored
6650     # 1419: external declaration in primary source file
6651     # 10006: ignoring unknown option -fno-signed-zeros
6652     # 10148: ignoring unknown option -Wno-parentheses
6653     # 10156: ignoring option '-W'; no argument required
6654     # 13200: No EMMS instruction before call to function
6655     # 13203: No EMMS instruction before return from function
6656     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6657     # 11030: Warning unknown option --as-needed
6658     # 10156: ignoring option '-export'; no argument required
6659     check_ldflags -wd10156,11030
6660     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6661     enable ebp_available
6662     # The test above does not test linking
6663     enabled lto && disable symver_asm_label
6664     if enabled x86_32; then
6665         icc_version=$($cc -dumpversion)
6666         test ${icc_version%%.*} -ge 11 &&
6667             check_cflags -falign-stack=maintain-16-byte ||
6668             disable aligned_stack
6669     fi
6670 elif enabled gcc; then
6671     check_optflags -fno-tree-vectorize
6672     check_cflags -Werror=format-security
6673     check_cflags -Werror=implicit-function-declaration
6674     check_cflags -Werror=missing-prototypes
6675     check_cflags -Werror=return-type
6676     check_cflags -Werror=vla
6677     check_cflags -Wformat
6678     check_cflags -fdiagnostics-color=auto
6679     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6680     if enabled x86_32; then
6681         case $target_os in
6682         *bsd*)
6683             # BSDs don't guarantee a 16 byte aligned stack, but we can
6684             # request GCC to try to maintain 16 byte alignment throughout
6685             # function calls. Library entry points that might call assembly
6686             # functions align the stack. (The parameter means 2^4 bytes.)
6687             check_cflags -mpreferred-stack-boundary=4
6688             ;;
6689         esac
6690     fi
6691 elif enabled llvm_gcc; then
6692     check_cflags -mllvm -stack-alignment=16
6693 elif enabled clang; then
6694     if enabled x86_32; then
6695         # Clang doesn't support maintaining alignment without assuming the
6696         # same alignment in every function. If 16 byte alignment would be
6697         # enabled, one would also have to either add attribute_align_arg on
6698         # every single entry point into the libraries or enable -mstackrealign
6699         # (doing stack realignment in every single function).
6700         case $target_os in
6701         mingw32|win32|*bsd*)
6702             disable aligned_stack
6703             ;;
6704         *)
6705             check_cflags -mllvm -stack-alignment=16
6706             check_cflags -mstack-alignment=16
6707             ;;
6708         esac
6709     else
6710         check_cflags -mllvm -stack-alignment=16
6711         check_cflags -mstack-alignment=16
6712     fi
6713     check_cflags -Qunused-arguments
6714     check_cflags -Werror=implicit-function-declaration
6715     check_cflags -Werror=missing-prototypes
6716     check_cflags -Werror=return-type
6717 elif enabled cparser; then
6718     add_cflags -Wno-missing-variable-declarations
6719     add_cflags -Wno-empty-statement
6720 elif enabled armcc; then
6721     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6722     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6723     # 2523: use of inline assembly is deprecated
6724     add_cflags -W${armcc_opt},--diag_suppress=2523
6725     add_cflags -W${armcc_opt},--diag_suppress=1207
6726     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6727     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6728     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6729     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6730 elif enabled pathscale; then
6731     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6732     disable inline_asm
6733 elif enabled_any msvc icl; then
6734     enabled x86_32 && disable aligned_stack
6735     enabled_all x86_32 debug && add_cflags -Oy-
6736     enabled debug && add_ldflags -debug
6737     enable pragma_deprecated
6738     if enabled icl; then
6739         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6740         # (correctly) on icl 13.x.
6741         test_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6742             add_cflags -Qansi-alias
6743         # Some inline asm is not compilable in debug
6744         if enabled debug; then
6745             disable ebp_available
6746             disable ebx_available
6747         fi
6748     fi
6749     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6750     check_cpp_condition log2 crtversion.h "_VC_CRT_MAJOR_VERSION >= 12"
6751     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6752     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6753     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6754     # MSVC 2013 and newer can handle it fine.
6755     # If this declspec fails, force including stdlib.h before the restrict redefinition
6756     # happens in config.h.
6757     if [ $restrict_keyword != restrict ]; then
6758         test_cc <<EOF || add_cflags -FIstdlib.h
6759 __declspec($restrict_keyword) void *foo(int);
6760 EOF
6761     fi
6762     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6763     # Issue has been fixed in MSVC v19.00.24218.
6764     test_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6765         check_cflags -d2SSAOptimizer-
6766     # enable utf-8 source processing on VS2015 U2 and newer
6767     test_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6768         add_cflags -utf-8
6769 fi
6770
6771 for pfx in "" host_; do
6772     varname=${pfx%_}cc_type
6773     eval "type=\$$varname"
6774     if [ "$type" = "msvc" ]; then
6775         test_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6776 static inline int foo(int a) { return a; }
6777 EOF
6778     fi
6779 done
6780
6781 case $as_type in
6782     clang)
6783         add_asflags -Qunused-arguments
6784     ;;
6785 esac
6786
6787 case $ld_type in
6788     clang)
6789         check_ldflags -Qunused-arguments
6790     ;;
6791 esac
6792
6793 enable frame_thread_encoder
6794
6795 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6796
6797 check_deps $CONFIG_LIST       \
6798            $CONFIG_EXTRA      \
6799            $HAVE_LIST         \
6800            $ALL_COMPONENTS    \
6801
6802 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"
6803 enabled avresample && warn "Building with deprecated library libavresample"
6804
6805 case $target_os in
6806 haiku)
6807     disable memalign
6808     disable posix_memalign
6809     ;;
6810 *-dos|freedos|opendos)
6811     if test_cpp_condition sys/version.h "defined(__DJGPP__) && __DJGPP__ == 2 && __DJGPP_MINOR__ == 5"; then
6812         disable memalign
6813     fi
6814     ;;
6815 esac
6816
6817 flatten_extralibs(){
6818     nested_entries=
6819     list_name=$1
6820     eval list=\$${1}
6821     for entry in $list; do
6822         entry_copy=$entry
6823         resolve entry_copy
6824         flat_entries=
6825         for e in $entry_copy; do
6826             case $e in
6827                 *_extralibs) nested_entries="$nested_entries$e ";;
6828                           *) flat_entries="$flat_entries$e ";;
6829             esac
6830         done
6831         eval $entry="\$flat_entries"
6832     done
6833     append $list_name "$nested_entries"
6834
6835     resolve nested_entries
6836     if test -n "$(filter '*_extralibs' $nested_entries)"; then
6837         flatten_extralibs $list_name
6838     fi
6839 }
6840
6841 flatten_extralibs_wrapper(){
6842     list_name=$1
6843     flatten_extralibs $list_name
6844     unique $list_name
6845     resolve $list_name
6846     eval $list_name=\$\(\$ldflags_filter \$$list_name\)
6847     eval printf \''%s'\' \""\$$list_name"\"
6848 }
6849
6850 for linkunit in $LIBRARY_LIST; do
6851     unset current_extralibs
6852     eval components=\$$(toupper ${linkunit})_COMPONENTS_LIST
6853     for comp in ${components}; do
6854         enabled $comp || continue
6855         comp_extralibs="${comp}_extralibs"
6856         append current_extralibs $comp_extralibs
6857     done
6858     eval prepend ${linkunit}_extralibs $current_extralibs
6859 done
6860
6861 for linkunit in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
6862     eval ${linkunit}_extralibs=\$\(flatten_extralibs_wrapper ${linkunit}_extralibs\)
6863 done
6864
6865 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6866
6867 for thread in $THREADS_LIST; do
6868     if enabled $thread; then
6869         test -n "$thread_type" &&
6870             die "ERROR: Only one thread type must be selected." ||
6871             thread_type="$thread"
6872     fi
6873 done
6874
6875 if disabled stdatomic; then
6876     if enabled atomics_gcc; then
6877         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6878     elif enabled atomics_win32; then
6879         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6880     elif enabled atomics_suncc; then
6881         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6882     elif enabled pthreads; then
6883         add_compat atomics/pthread/stdatomic.o
6884         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6885     else
6886         enabled threads && die "Threading is enabled, but no atomics are available"
6887         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6888     fi
6889 fi
6890
6891 # Check if requested libraries were found.
6892 for lib in $AUTODETECT_LIBS; do
6893     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6894 done
6895
6896 enabled zlib && add_cppflags -DZLIB_CONST
6897
6898 # conditional library dependencies, in any order
6899 enabled afftdn_filter       && prepend avfilter_deps "avcodec"
6900 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6901 enabled afir_filter         && prepend avfilter_deps "avcodec"
6902 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6903 enabled aresample_filter    && prepend avfilter_deps "swresample"
6904 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6905 enabled bm3d_filter         && prepend avfilter_deps "avcodec"
6906 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6907 enabled convolve_filter     && prepend avfilter_deps "avcodec"
6908 enabled deconvolve_filter   && prepend avfilter_deps "avcodec"
6909 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6910 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6911 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6912 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6913 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
6914 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6915 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6916 enabled pan_filter          && prepend avfilter_deps "swresample"
6917 enabled pp_filter           && prepend avfilter_deps "postproc"
6918 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6919 enabled resample_filter && prepend avfilter_deps "avresample"
6920 enabled sab_filter          && prepend avfilter_deps "swscale"
6921 enabled scale_filter    && prepend avfilter_deps "swscale"
6922 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6923 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6924 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6925 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6926 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6927 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
6928 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6929 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6930 enabled spp_filter          && prepend avfilter_deps "avcodec"
6931 enabled sr_filter           && prepend avfilter_deps "avformat swscale"
6932 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6933 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6934 enabled zoompan_filter      && prepend avfilter_deps "swscale"
6935
6936 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6937
6938 #FIXME
6939 enabled_any sdl2_outdev opengl_outdev && enabled sdl2 &&
6940     add_cflags $(filter_out '-Dmain=SDL_main' $sdl2_cflags)
6941
6942 enabled opus_decoder    && prepend avcodec_deps "swresample"
6943
6944 # reorder the items at var $1 to align with the items order at var $2 .
6945 # die if an item at $1 is not at $2 .
6946 reorder_by(){
6947     eval rb_in=\$$1
6948     eval rb_ordered=\$$2
6949
6950     for rb in $rb_in; do
6951         is_in $rb $rb_ordered || die "$rb at \$$1 is not at \$$2"
6952     done
6953
6954     rb_out=
6955     for rb in $rb_ordered; do
6956         is_in $rb $rb_in && rb_out="$rb_out$rb "
6957     done
6958     eval $1=\$rb_out
6959 }
6960
6961 # deps-expand fflib $1:  N x {append all expanded deps; unique}
6962 # within a set of N items, N expansions are enough to expose a cycle.
6963 expand_deps(){
6964     unique ${1}_deps  # required for the early break test.
6965     for dummy in $LIBRARY_LIST; do  # N iteratios
6966         eval deps=\$${1}_deps
6967         append ${1}_deps $(map 'eval echo \$${v}_deps' $deps)
6968         unique ${1}_deps
6969         eval '[ ${#deps} = ${#'${1}_deps'} ]' && break  # doesn't expand anymore
6970     done
6971
6972     eval is_in $1 \$${1}_deps && die "Dependency cycle at ${1}_deps"
6973     reorder_by ${1}_deps LIBRARY_LIST  # linking order is expected later
6974 }
6975
6976 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6977 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6978
6979 map 'expand_deps $v' $LIBRARY_LIST
6980
6981 if test "$quiet" != "yes"; then
6982
6983 echo "install prefix            $prefix"
6984 echo "source path               $source_path"
6985 echo "C compiler                $cc"
6986 echo "C library                 $libc_type"
6987 if test "$host_cc" != "$cc"; then
6988     echo "host C compiler           $host_cc"
6989     echo "host C library            $host_libc_type"
6990 fi
6991 echo "ARCH                      $arch ($cpu)"
6992 if test "$build_suffix" != ""; then
6993     echo "build suffix              $build_suffix"
6994 fi
6995 if test "$progs_suffix" != ""; then
6996     echo "progs suffix              $progs_suffix"
6997 fi
6998 if test "$extra_version" != ""; then
6999     echo "version string suffix     $extra_version"
7000 fi
7001 echo "big-endian                ${bigendian-no}"
7002 echo "runtime cpu detection     ${runtime_cpudetect-no}"
7003 if enabled x86; then
7004     echo "standalone assembly       ${x86asm-no}"
7005     echo "x86 assembler             ${x86asmexe}"
7006     echo "MMX enabled               ${mmx-no}"
7007     echo "MMXEXT enabled            ${mmxext-no}"
7008     echo "3DNow! enabled            ${amd3dnow-no}"
7009     echo "3DNow! extended enabled   ${amd3dnowext-no}"
7010     echo "SSE enabled               ${sse-no}"
7011     echo "SSSE3 enabled             ${ssse3-no}"
7012     echo "AESNI enabled             ${aesni-no}"
7013     echo "AVX enabled               ${avx-no}"
7014     echo "AVX2 enabled              ${avx2-no}"
7015     echo "AVX-512 enabled           ${avx512-no}"
7016     echo "XOP enabled               ${xop-no}"
7017     echo "FMA3 enabled              ${fma3-no}"
7018     echo "FMA4 enabled              ${fma4-no}"
7019     echo "i686 features enabled     ${i686-no}"
7020     echo "CMOV is fast              ${fast_cmov-no}"
7021     echo "EBX available             ${ebx_available-no}"
7022     echo "EBP available             ${ebp_available-no}"
7023 fi
7024 if enabled aarch64; then
7025     echo "NEON enabled              ${neon-no}"
7026     echo "VFP enabled               ${vfp-no}"
7027 fi
7028 if enabled arm; then
7029     echo "ARMv5TE enabled           ${armv5te-no}"
7030     echo "ARMv6 enabled             ${armv6-no}"
7031     echo "ARMv6T2 enabled           ${armv6t2-no}"
7032     echo "VFP enabled               ${vfp-no}"
7033     echo "NEON enabled              ${neon-no}"
7034     echo "THUMB enabled             ${thumb-no}"
7035 fi
7036 if enabled mips; then
7037     echo "MIPS FPU enabled          ${mipsfpu-no}"
7038     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
7039     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
7040     echo "MIPS MSA enabled          ${msa-no}"
7041     echo "LOONGSON MMI enabled      ${mmi-no}"
7042 fi
7043 if enabled ppc; then
7044     echo "AltiVec enabled           ${altivec-no}"
7045     echo "VSX enabled               ${vsx-no}"
7046     echo "POWER8 enabled            ${power8-no}"
7047     echo "PPC 4xx optimizations     ${ppc4xx-no}"
7048     echo "dcbzl available           ${dcbzl-no}"
7049 fi
7050 echo "debug symbols             ${debug-no}"
7051 echo "strip symbols             ${stripping-no}"
7052 echo "optimize for size         ${small-no}"
7053 echo "optimizations             ${optimizations-no}"
7054 echo "static                    ${static-no}"
7055 echo "shared                    ${shared-no}"
7056 echo "postprocessing support    ${postproc-no}"
7057 echo "network support           ${network-no}"
7058 echo "threading support         ${thread_type-no}"
7059 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
7060 echo "texi2html enabled         ${texi2html-no}"
7061 echo "perl enabled              ${perl-no}"
7062 echo "pod2man enabled           ${pod2man-no}"
7063 echo "makeinfo enabled          ${makeinfo-no}"
7064 echo "makeinfo supports HTML    ${makeinfo_html-no}"
7065 test -n "$random_seed" &&
7066     echo "random seed               ${random_seed}"
7067 echo
7068
7069 echo "External libraries:"
7070 print_enabled '' $EXTERNAL_LIBRARY_LIST $EXTERNAL_AUTODETECT_LIBRARY_LIST | print_in_columns
7071 echo
7072
7073 echo "External libraries providing hardware acceleration:"
7074 print_enabled '' $HWACCEL_LIBRARY_LIST $HWACCEL_AUTODETECT_LIBRARY_LIST | print_in_columns
7075 echo
7076
7077 echo "Libraries:"
7078 print_enabled '' $LIBRARY_LIST | print_in_columns
7079 echo
7080
7081 echo "Programs:"
7082 print_enabled '' $PROGRAM_LIST | print_in_columns
7083 echo
7084
7085 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
7086     echo "Enabled ${type}s:"
7087     eval list=\$$(toupper $type)_LIST
7088     print_enabled '_*' $list | print_in_columns
7089     echo
7090 done
7091
7092 if test -n "$ignore_tests"; then
7093     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
7094     echo "Ignored FATE tests:"
7095     echo $ignore_tests | print_in_columns
7096     echo
7097 fi
7098
7099 echo "License: $license"
7100
7101 fi # test "$quiet" != "yes"
7102
7103 if test -n "$WARNINGS"; then
7104     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
7105     enabled fatal_warnings && exit 1
7106 fi
7107
7108 test -e Makefile || echo "include $source_path/Makefile" > Makefile
7109
7110 esc(){
7111     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
7112 }
7113
7114 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
7115
7116 enabled stripping || strip="echo skipping strip"
7117 enabled stripping || striptype=""
7118
7119 config_files="$TMPH ffbuild/config.mak doc/config.texi"
7120
7121 cat > ffbuild/config.mak <<EOF
7122 # Automatically generated by configure - do not modify!
7123 ifndef FFMPEG_CONFIG_MAK
7124 FFMPEG_CONFIG_MAK=1
7125 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
7126 prefix=$prefix
7127 LIBDIR=\$(DESTDIR)$libdir
7128 SHLIBDIR=\$(DESTDIR)$shlibdir
7129 INCDIR=\$(DESTDIR)$incdir
7130 BINDIR=\$(DESTDIR)$bindir
7131 DATADIR=\$(DESTDIR)$datadir
7132 DOCDIR=\$(DESTDIR)$docdir
7133 MANDIR=\$(DESTDIR)$mandir
7134 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
7135 INSTALL_NAME_DIR=$install_name_dir
7136 SRC_PATH=$source_path
7137 SRC_LINK=$source_link
7138 ifndef MAIN_MAKEFILE
7139 SRC_PATH:=\$(SRC_PATH:.%=..%)
7140 endif
7141 CC_IDENT=$cc_ident
7142 ARCH=$arch
7143 INTRINSICS=$intrinsics
7144 EXTERN_PREFIX=$extern_prefix
7145 CC=$cc
7146 CXX=$cxx
7147 AS=$as
7148 OBJCC=$objcc
7149 LD=$ld
7150 DEPCC=$dep_cc
7151 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
7152 DEPAS=$as
7153 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
7154 X86ASM=$x86asmexe
7155 DEPX86ASM=$x86asmexe
7156 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
7157 AR=$ar
7158 ARFLAGS=$arflags
7159 AR_O=$ar_o
7160 AR_CMD=$ar
7161 NM_CMD=$nm
7162 RANLIB=$ranlib
7163 STRIP=$strip
7164 STRIPTYPE=$striptype
7165 NVCC=$nvcc
7166 CP=cp -p
7167 LN_S=$ln_s
7168 CPPFLAGS=$CPPFLAGS
7169 CFLAGS=$CFLAGS
7170 CXXFLAGS=$CXXFLAGS
7171 OBJCFLAGS=$OBJCFLAGS
7172 ASFLAGS=$ASFLAGS
7173 NVCCFLAGS=$nvccflags
7174 AS_C=$AS_C
7175 AS_O=$AS_O
7176 OBJCC_C=$OBJCC_C
7177 OBJCC_E=$OBJCC_E
7178 OBJCC_O=$OBJCC_O
7179 CC_C=$CC_C
7180 CC_E=$CC_E
7181 CC_O=$CC_O
7182 CXX_C=$CXX_C
7183 CXX_O=$CXX_O
7184 NVCC_C=$NVCC_C
7185 NVCC_O=$NVCC_O
7186 LD_O=$LD_O
7187 X86ASM_O=$X86ASM_O
7188 LD_LIB=$LD_LIB
7189 LD_PATH=$LD_PATH
7190 DLLTOOL=$dlltool
7191 WINDRES=$windres
7192 DEPWINDRES=$dep_cc
7193 DOXYGEN=$doxygen
7194 LDFLAGS=$LDFLAGS
7195 LDEXEFLAGS=$LDEXEFLAGS
7196 LDSOFLAGS=$LDSOFLAGS
7197 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
7198 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
7199 X86ASMFLAGS=$X86ASMFLAGS
7200 BUILDSUF=$build_suffix
7201 PROGSSUF=$progs_suffix
7202 FULLNAME=$FULLNAME
7203 LIBPREF=$LIBPREF
7204 LIBSUF=$LIBSUF
7205 LIBNAME=$LIBNAME
7206 SLIBPREF=$SLIBPREF
7207 SLIBSUF=$SLIBSUF
7208 EXESUF=$EXESUF
7209 EXTRA_VERSION=$extra_version
7210 CCDEP=$CCDEP
7211 CXXDEP=$CXXDEP
7212 CCDEP_FLAGS=$CCDEP_FLAGS
7213 ASDEP=$ASDEP
7214 ASDEP_FLAGS=$ASDEP_FLAGS
7215 X86ASMDEP=$X86ASMDEP
7216 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
7217 CC_DEPFLAGS=$CC_DEPFLAGS
7218 AS_DEPFLAGS=$AS_DEPFLAGS
7219 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
7220 HOSTCC=$host_cc
7221 HOSTLD=$host_ld
7222 HOSTCFLAGS=$host_cflags
7223 HOSTCPPFLAGS=$host_cppflags
7224 HOSTEXESUF=$HOSTEXESUF
7225 HOSTLDFLAGS=$host_ldflags
7226 HOSTEXTRALIBS=$host_extralibs
7227 DEPHOSTCC=$host_cc
7228 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
7229 HOSTCCDEP=$HOSTCCDEP
7230 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
7231 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
7232 HOSTCC_C=$HOSTCC_C
7233 HOSTCC_O=$HOSTCC_O
7234 HOSTLD_O=$HOSTLD_O
7235 TARGET_EXEC=$target_exec $target_exec_args
7236 TARGET_PATH=$target_path
7237 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
7238 CFLAGS-ffplay=${sdl2_cflags}
7239 CFLAGS_HEADERS=$CFLAGS_HEADERS
7240 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
7241 EXTRALIBS=$extralibs
7242 COMPAT_OBJS=$compat_objs
7243 INSTALL=$install
7244 LIBTARGET=${LIBTARGET}
7245 SLIBNAME=${SLIBNAME}
7246 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
7247 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
7248 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
7249 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
7250 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
7251 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
7252 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
7253 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
7254 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
7255 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
7256 NOREDZONE_FLAGS=$noredzone_flags
7257 LIBFUZZER_PATH=$libfuzzer_path
7258 IGNORE_TESTS=$ignore_tests
7259 EOF
7260
7261 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
7262
7263 for entry in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
7264     eval echo "EXTRALIBS-${entry}=\$${entry}_extralibs" >> ffbuild/config.mak
7265 done
7266
7267 cat > $TMPH <<EOF
7268 /* Automatically generated by configure - do not modify! */
7269 #ifndef FFMPEG_CONFIG_H
7270 #define FFMPEG_CONFIG_H
7271 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
7272 #define FFMPEG_LICENSE "$(c_escape $license)"
7273 #define CONFIG_THIS_YEAR 2019
7274 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
7275 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
7276 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
7277 #define av_restrict $restrict_keyword
7278 #define EXTERN_PREFIX "${extern_prefix}"
7279 #define EXTERN_ASM ${extern_prefix}
7280 #define BUILDSUF "$build_suffix"
7281 #define SLIBSUF "$SLIBSUF"
7282 #define HAVE_MMX2 HAVE_MMXEXT
7283 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
7284 EOF
7285
7286 test -n "$assert_level" &&
7287     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
7288
7289 test -n "$malloc_prefix" &&
7290     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
7291
7292 if enabled x86asm; then
7293     append config_files $TMPASM
7294     cat > $TMPASM <<EOF
7295 ; Automatically generated by configure - do not modify!
7296 EOF
7297 fi
7298
7299 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
7300
7301
7302 mkdir -p doc
7303 mkdir -p tests
7304 mkdir -p tests/api
7305 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
7306
7307 print_config ARCH_   "$config_files" $ARCH_LIST
7308 print_config HAVE_   "$config_files" $HAVE_LIST
7309 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
7310                                      $CONFIG_EXTRA      \
7311                                      $ALL_COMPONENTS    \
7312
7313 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
7314 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
7315
7316 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
7317 cp_if_changed $TMPH config.h
7318 touch ffbuild/.config
7319
7320 enabled x86asm && cp_if_changed $TMPASM config.asm
7321
7322 cat > $TMPH <<EOF
7323 /* Generated by ffmpeg configure */
7324 #ifndef AVUTIL_AVCONFIG_H
7325 #define AVUTIL_AVCONFIG_H
7326 EOF
7327
7328 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
7329
7330 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
7331
7332 cp_if_changed $TMPH libavutil/avconfig.h
7333
7334 # full_filter_name_foo=vf_foo
7335 # full_filter_name_bar=asrc_bar
7336 # ...
7337 eval "$(sed -n "s/^extern AVFilter ff_\([avfsinkrc]\{2,5\}\)_\(.*\);/full_filter_name_\2=\1_\2/p" $source_path/libavfilter/allfilters.c)"
7338
7339 # generate the lists of enabled components
7340 print_enabled_components(){
7341     file=$1
7342     struct_name=$2
7343     name=$3
7344     shift 3
7345     echo "static const $struct_name * const $name[] = {" > $TMPH
7346     for c in $*; do
7347         if enabled $c; then
7348             case $name in
7349                 filter_list)
7350                     eval c=\$full_filter_name_${c%_filter}
7351                 ;;
7352                 indev_list)
7353                     c=${c%_indev}_demuxer
7354                 ;;
7355                 outdev_list)
7356                     c=${c%_outdev}_muxer
7357                 ;;
7358             esac
7359             printf "    &ff_%s,\n" $c >> $TMPH
7360         fi
7361     done
7362     if [ "$name" = "filter_list" ]; then
7363         for c in asrc_abuffer vsrc_buffer asink_abuffer vsink_buffer; do
7364             printf "    &ff_%s,\n" $c >> $TMPH
7365         done
7366     fi
7367     echo "    NULL };" >> $TMPH
7368     cp_if_changed $TMPH $file
7369 }
7370
7371 print_enabled_components libavfilter/filter_list.c AVFilter filter_list $FILTER_LIST
7372 print_enabled_components libavcodec/codec_list.c AVCodec codec_list $CODEC_LIST
7373 print_enabled_components libavcodec/parser_list.c AVCodecParser parser_list $PARSER_LIST
7374 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
7375 print_enabled_components libavformat/demuxer_list.c AVInputFormat demuxer_list $DEMUXER_LIST
7376 print_enabled_components libavformat/muxer_list.c AVOutputFormat muxer_list $MUXER_LIST
7377 print_enabled_components libavdevice/indev_list.c AVInputFormat indev_list $INDEV_LIST
7378 print_enabled_components libavdevice/outdev_list.c AVOutputFormat outdev_list $OUTDEV_LIST
7379 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
7380
7381 # Settings for pkg-config files
7382
7383 cat > $TMPH <<EOF
7384 # Automatically generated by configure - do not modify!
7385 shared=$shared
7386 build_suffix=$build_suffix
7387 prefix=$prefix
7388 libdir=$libdir
7389 incdir=$incdir
7390 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
7391 source_path=${source_path}
7392 LIBPREF=${LIBPREF}
7393 LIBSUF=${LIBSUF}
7394 extralibs_avutil="$avutil_extralibs"
7395 extralibs_avcodec="$avcodec_extralibs"
7396 extralibs_avformat="$avformat_extralibs"
7397 extralibs_avdevice="$avdevice_extralibs"
7398 extralibs_avfilter="$avfilter_extralibs"
7399 extralibs_avresample="$avresample_extralibs"
7400 extralibs_postproc="$postproc_extralibs"
7401 extralibs_swscale="$swscale_extralibs"
7402 extralibs_swresample="$swresample_extralibs"
7403 EOF
7404
7405 for lib in $LIBRARY_LIST; do
7406     lib_deps="$(eval echo \$${lib}_deps)"
7407     echo ${lib}_deps=\"$lib_deps\" >> $TMPH
7408 done
7409
7410 cp_if_changed $TMPH ffbuild/config.sh