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 [$doxygen_default]
 378   --host-cc=HOSTCC         use host C compiler HOSTCC
 379   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 380   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 381   --host-ld=HOSTLD         use host linker HOSTLD
 382   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 383   --host-libs=HLIBS        use libs HLIBS when linking for host
 384   --host-os=OS             compiler host OS [$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-osfuzz          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     x86asmexe
2440 "
2441
2442 CMDLINE_APPEND="
2443     extra_cflags
2444     extra_cxxflags
2445     extra_objcflags
2446     host_cppflags
2447 "
2448
2449 # code dependency declarations
2450
2451 # architecture extensions
2452
2453 armv5te_deps="arm"
2454 armv6_deps="arm"
2455 armv6t2_deps="arm"
2456 armv8_deps="aarch64"
2457 neon_deps_any="aarch64 arm"
2458 intrinsics_neon_deps="neon"
2459 vfp_deps_any="aarch64 arm"
2460 vfpv3_deps="vfp"
2461 setend_deps="arm"
2462
2463 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2464
2465 altivec_deps="ppc"
2466 dcbzl_deps="ppc"
2467 ldbrx_deps="ppc"
2468 ppc4xx_deps="ppc"
2469 vsx_deps="altivec"
2470 power8_deps="vsx"
2471
2472 loongson2_deps="mips"
2473 loongson3_deps="mips"
2474 mips32r2_deps="mips"
2475 mips32r5_deps="mips"
2476 mips32r6_deps="mips"
2477 mips64r2_deps="mips"
2478 mips64r6_deps="mips"
2479 mipsfpu_deps="mips"
2480 mipsdsp_deps="mips"
2481 mipsdspr2_deps="mips"
2482 mmi_deps="mips"
2483 msa_deps="mipsfpu"
2484
2485 cpunop_deps="i686"
2486 x86_64_select="i686"
2487 x86_64_suggest="fast_cmov"
2488
2489 amd3dnow_deps="mmx"
2490 amd3dnowext_deps="amd3dnow"
2491 i686_deps="x86"
2492 mmx_deps="x86"
2493 mmxext_deps="mmx"
2494 sse_deps="mmxext"
2495 sse2_deps="sse"
2496 sse3_deps="sse2"
2497 ssse3_deps="sse3"
2498 sse4_deps="ssse3"
2499 sse42_deps="sse4"
2500 aesni_deps="sse42"
2501 avx_deps="sse42"
2502 xop_deps="avx"
2503 fma3_deps="avx"
2504 fma4_deps="avx"
2505 avx2_deps="avx"
2506 avx512_deps="avx2"
2507
2508 mmx_external_deps="x86asm"
2509 mmx_inline_deps="inline_asm x86"
2510 mmx_suggest="mmx_external mmx_inline"
2511
2512 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2513     eval dep=\$${ext}_deps
2514     eval ${ext}_external_deps='"${dep}_external"'
2515     eval ${ext}_inline_deps='"${dep}_inline"'
2516     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2517 done
2518
2519 aligned_stack_if_any="aarch64 ppc x86"
2520 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2521 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2522 fast_unaligned_if_any="aarch64 ppc x86"
2523 simd_align_16_if_any="altivec neon sse"
2524 simd_align_32_if_any="avx"
2525 simd_align_64_if_any="avx512"
2526
2527 # system capabilities
2528 linux_perf_deps="linux_perf_event_h"
2529 symver_if_any="symver_asm_label symver_gnu_asm"
2530 valgrind_backtrace_conflict="optimizations"
2531 valgrind_backtrace_deps="valgrind_valgrind_h"
2532
2533 # threading support
2534 atomics_gcc_if="sync_val_compare_and_swap"
2535 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2536 atomics_win32_if="MemoryBarrier"
2537 atomics_native_if_any="$ATOMICS_LIST"
2538 w32threads_deps="atomics_native"
2539 threads_if_any="$THREADS_LIST"
2540
2541 # subsystems
2542 cbs_av1_select="cbs"
2543 cbs_h264_select="cbs golomb"
2544 cbs_h265_select="cbs golomb"
2545 cbs_jpeg_select="cbs"
2546 cbs_mpeg2_select="cbs"
2547 cbs_vp9_select="cbs"
2548 dct_select="rdft"
2549 dirac_parse_select="golomb"
2550 dnn_suggest="libtensorflow"
2551 error_resilience_select="me_cmp"
2552 faandct_deps="faan"
2553 faandct_select="fdctdsp"
2554 faanidct_deps="faan"
2555 faanidct_select="idctdsp"
2556 h264dsp_select="startcode"
2557 hevcparse_select="golomb"
2558 frame_thread_encoder_deps="encoders threads"
2559 intrax8_select="blockdsp idctdsp"
2560 mdct_select="fft"
2561 mdct15_select="fft"
2562 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2563 mpeg_er_select="error_resilience"
2564 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2565 mpegaudiodsp_select="dct"
2566 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2567 mpegvideoenc_select="aandcttables me_cmp mpegvideo pixblockdsp qpeldsp"
2568 vc1dsp_select="h264chroma qpeldsp startcode"
2569 rdft_select="fft"
2570
2571 # decoders / encoders
2572 aac_decoder_select="adts_header mdct15 mdct sinewin"
2573 aac_fixed_decoder_select="adts_header mdct sinewin"
2574 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2575 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2576 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2577 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2578 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2579 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2580 adpcm_g722_decoder_select="g722dsp"
2581 adpcm_g722_encoder_select="g722dsp"
2582 aic_decoder_select="golomb idctdsp"
2583 alac_encoder_select="lpc"
2584 als_decoder_select="bswapdsp"
2585 amrnb_decoder_select="lsp"
2586 amrwb_decoder_select="lsp"
2587 amv_decoder_select="sp5x_decoder exif"
2588 amv_encoder_select="jpegtables mpegvideoenc"
2589 ape_decoder_select="bswapdsp llauddsp"
2590 apng_decoder_deps="zlib"
2591 apng_encoder_deps="zlib"
2592 apng_encoder_select="llvidencdsp"
2593 aptx_decoder_select="audio_frame_queue"
2594 aptx_encoder_select="audio_frame_queue"
2595 aptx_hd_decoder_select="audio_frame_queue"
2596 aptx_hd_encoder_select="audio_frame_queue"
2597 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2598 asv1_encoder_select="aandcttables bswapdsp fdctdsp pixblockdsp"
2599 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2600 asv2_encoder_select="aandcttables bswapdsp fdctdsp pixblockdsp"
2601 atrac1_decoder_select="mdct sinewin"
2602 atrac3_decoder_select="mdct"
2603 atrac3p_decoder_select="mdct sinewin"
2604 atrac9_decoder_select="mdct"
2605 avrn_decoder_select="exif jpegtables"
2606 bink_decoder_select="blockdsp hpeldsp"
2607 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2608 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2609 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2610 clearvideo_decoder_select="idctdsp"
2611 cllc_decoder_select="bswapdsp"
2612 comfortnoise_encoder_select="lpc"
2613 cook_decoder_select="audiodsp mdct sinewin"
2614 cscd_decoder_select="lzo"
2615 cscd_decoder_suggest="zlib"
2616 dca_decoder_select="mdct"
2617 dds_decoder_select="texturedsp"
2618 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2619 dnxhd_decoder_select="blockdsp idctdsp"
2620 dnxhd_encoder_select="blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2621 dolby_e_decoder_select="mdct"
2622 dvvideo_decoder_select="dvprofile idctdsp"
2623 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2624 dxa_decoder_deps="zlib"
2625 dxv_decoder_select="lzf texturedsp"
2626 eac3_decoder_select="ac3_decoder"
2627 eac3_encoder_select="ac3_encoder"
2628 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2629 eatgq_decoder_select="aandcttables"
2630 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2631 exr_decoder_deps="zlib"
2632 ffv1_decoder_select="rangecoder"
2633 ffv1_encoder_select="rangecoder"
2634 ffvhuff_decoder_select="huffyuv_decoder"
2635 ffvhuff_encoder_select="huffyuv_encoder"
2636 fic_decoder_select="golomb"
2637 flac_decoder_select="flacdsp"
2638 flac_encoder_select="bswapdsp flacdsp lpc"
2639 flashsv2_decoder_deps="zlib"
2640 flashsv2_encoder_deps="zlib"
2641 flashsv_decoder_deps="zlib"
2642 flashsv_encoder_deps="zlib"
2643 flv_decoder_select="h263_decoder"
2644 flv_encoder_select="h263_encoder"
2645 fourxm_decoder_select="blockdsp bswapdsp"
2646 fraps_decoder_select="bswapdsp huffman"
2647 g2m_decoder_deps="zlib"
2648 g2m_decoder_select="blockdsp idctdsp jpegtables"
2649 g729_decoder_select="audiodsp"
2650 h261_decoder_select="mpegvideo"
2651 h261_encoder_select="mpegvideoenc"
2652 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2653 h263_encoder_select="h263dsp mpegvideoenc"
2654 h263i_decoder_select="h263_decoder"
2655 h263p_decoder_select="h263_decoder"
2656 h263p_encoder_select="h263_encoder"
2657 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2658 h264_decoder_suggest="error_resilience"
2659 hap_decoder_select="snappy texturedsp"
2660 hap_encoder_deps="libsnappy"
2661 hap_encoder_select="texturedspenc"
2662 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2663 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2664 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2665 iac_decoder_select="imc_decoder"
2666 imc_decoder_select="bswapdsp fft mdct sinewin"
2667 indeo3_decoder_select="hpeldsp"
2668 indeo4_decoder_select="ividsp"
2669 indeo5_decoder_select="ividsp"
2670 interplay_video_decoder_select="hpeldsp"
2671 jpegls_decoder_select="mjpeg_decoder"
2672 jv_decoder_select="blockdsp"
2673 lagarith_decoder_select="llviddsp"
2674 ljpeg_encoder_select="idctdsp jpegtables mpegvideoenc"
2675 magicyuv_decoder_select="llviddsp"
2676 magicyuv_encoder_select="llvidencdsp"
2677 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2678 metasound_decoder_select="lsp mdct sinewin"
2679 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2680 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2681 mjpeg_encoder_select="jpegtables mpegvideoenc"
2682 mjpegb_decoder_select="mjpeg_decoder"
2683 mlp_decoder_select="mlp_parser"
2684 mlp_encoder_select="lpc"
2685 motionpixels_decoder_select="bswapdsp"
2686 mp1_decoder_select="mpegaudio"
2687 mp1float_decoder_select="mpegaudio"
2688 mp2_decoder_select="mpegaudio"
2689 mp2float_decoder_select="mpegaudio"
2690 mp3_decoder_select="mpegaudio"
2691 mp3adu_decoder_select="mpegaudio"
2692 mp3adufloat_decoder_select="mpegaudio"
2693 mp3float_decoder_select="mpegaudio"
2694 mp3on4_decoder_select="mpegaudio"
2695 mp3on4float_decoder_select="mpegaudio"
2696 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2697 mpc8_decoder_select="mpegaudiodsp"
2698 mpegvideo_decoder_select="mpegvideo"
2699 mpeg1video_decoder_select="mpegvideo"
2700 mpeg1video_encoder_select="mpegvideoenc h263dsp"
2701 mpeg2video_decoder_select="mpegvideo"
2702 mpeg2video_encoder_select="mpegvideoenc h263dsp"
2703 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2704 mpeg4_encoder_select="h263_encoder"
2705 msa1_decoder_select="mss34dsp"
2706 mscc_decoder_deps="zlib"
2707 msmpeg4v1_decoder_select="h263_decoder"
2708 msmpeg4v2_decoder_select="h263_decoder"
2709 msmpeg4v2_encoder_select="h263_encoder"
2710 msmpeg4v3_decoder_select="h263_decoder"
2711 msmpeg4v3_encoder_select="h263_encoder"
2712 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2713 mts2_decoder_select="mss34dsp"
2714 mwsc_decoder_deps="zlib"
2715 mxpeg_decoder_select="mjpeg_decoder"
2716 nellymoser_decoder_select="mdct sinewin"
2717 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2718 nuv_decoder_select="idctdsp lzo"
2719 on2avc_decoder_select="mdct"
2720 opus_decoder_deps="swresample"
2721 opus_decoder_select="mdct15"
2722 opus_encoder_select="audio_frame_queue mdct15"
2723 png_decoder_deps="zlib"
2724 png_encoder_deps="zlib"
2725 png_encoder_select="llvidencdsp"
2726 prores_decoder_select="blockdsp idctdsp"
2727 prores_encoder_select="fdctdsp"
2728 qcelp_decoder_select="lsp"
2729 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2730 ra_144_decoder_select="audiodsp"
2731 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2732 ralf_decoder_select="golomb"
2733 rasc_decoder_deps="zlib"
2734 rawvideo_decoder_select="bswapdsp"
2735 rscc_decoder_deps="zlib"
2736 rtjpeg_decoder_select="me_cmp"
2737 rv10_decoder_select="h263_decoder"
2738 rv10_encoder_select="h263_encoder"
2739 rv20_decoder_select="h263_decoder"
2740 rv20_encoder_select="h263_encoder"
2741 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2742 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2743 screenpresso_decoder_deps="zlib"
2744 shorten_decoder_select="bswapdsp"
2745 sipr_decoder_select="lsp"
2746 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2747 snow_encoder_select="dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2748 sonic_decoder_select="golomb rangecoder"
2749 sonic_encoder_select="golomb rangecoder"
2750 sonic_ls_encoder_select="golomb rangecoder"
2751 sp5x_decoder_select="mjpeg_decoder"
2752 speedhq_decoder_select="mpegvideo"
2753 srgc_decoder_deps="zlib"
2754 svq1_decoder_select="hpeldsp"
2755 svq1_encoder_select="hpeldsp me_cmp mpegvideoenc"
2756 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2757 svq3_decoder_suggest="zlib"
2758 tak_decoder_select="audiodsp"
2759 tdsc_decoder_deps="zlib"
2760 tdsc_decoder_select="mjpeg_decoder"
2761 theora_decoder_select="vp3_decoder"
2762 thp_decoder_select="mjpeg_decoder"
2763 tiff_decoder_suggest="zlib lzma"
2764 tiff_encoder_suggest="zlib"
2765 truehd_decoder_select="mlp_parser"
2766 truehd_encoder_select="lpc"
2767 truemotion2_decoder_select="bswapdsp"
2768 truespeech_decoder_select="bswapdsp"
2769 tscc_decoder_deps="zlib"
2770 twinvq_decoder_select="mdct lsp sinewin"
2771 txd_decoder_select="texturedsp"
2772 utvideo_decoder_select="bswapdsp llviddsp"
2773 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2774 vble_decoder_select="llviddsp"
2775 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2776 vc1image_decoder_select="vc1_decoder"
2777 vorbis_decoder_select="mdct"
2778 vorbis_encoder_select="audio_frame_queue mdct"
2779 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2780 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2781 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2782 vp6a_decoder_select="vp6_decoder"
2783 vp6f_decoder_select="vp6_decoder"
2784 vp7_decoder_select="h264pred videodsp vp8dsp"
2785 vp8_decoder_select="h264pred videodsp vp8dsp"
2786 vp9_decoder_select="videodsp vp9_parser vp9_superframe_split_bsf"
2787 wcmv_decoder_deps="zlib"
2788 webp_decoder_select="vp8_decoder exif"
2789 wmalossless_decoder_select="llauddsp"
2790 wmapro_decoder_select="mdct sinewin wma_freqs"
2791 wmav1_decoder_select="mdct sinewin wma_freqs"
2792 wmav1_encoder_select="mdct sinewin wma_freqs"
2793 wmav2_decoder_select="mdct sinewin wma_freqs"
2794 wmav2_encoder_select="mdct sinewin wma_freqs"
2795 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2796 wmv1_decoder_select="h263_decoder"
2797 wmv1_encoder_select="h263_encoder"
2798 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2799 wmv2_encoder_select="h263_encoder wmv2dsp"
2800 wmv3_decoder_select="vc1_decoder"
2801 wmv3image_decoder_select="wmv3_decoder"
2802 xma1_decoder_select="wmapro_decoder"
2803 xma2_decoder_select="wmapro_decoder"
2804 zerocodec_decoder_deps="zlib"
2805 zlib_decoder_deps="zlib"
2806 zlib_encoder_deps="zlib"
2807 zmbv_decoder_deps="zlib"
2808 zmbv_encoder_deps="zlib"
2809
2810 # hardware accelerators
2811 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2812 cuda_deps="ffnvcodec"
2813 cuvid_deps="ffnvcodec"
2814 d3d11va_deps="dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2815 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2816 ffnvcodec_deps_any="libdl LoadLibrary"
2817 nvdec_deps="ffnvcodec"
2818 vaapi_x11_deps="xlib"
2819 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2820 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2821 xvmc_deps="X11_extensions_XvMClib_h"
2822
2823 h263_vaapi_hwaccel_deps="vaapi"
2824 h263_vaapi_hwaccel_select="h263_decoder"
2825 h263_videotoolbox_hwaccel_deps="videotoolbox"
2826 h263_videotoolbox_hwaccel_select="h263_decoder"
2827 h264_d3d11va_hwaccel_deps="d3d11va"
2828 h264_d3d11va_hwaccel_select="h264_decoder"
2829 h264_d3d11va2_hwaccel_deps="d3d11va"
2830 h264_d3d11va2_hwaccel_select="h264_decoder"
2831 h264_dxva2_hwaccel_deps="dxva2"
2832 h264_dxva2_hwaccel_select="h264_decoder"
2833 h264_nvdec_hwaccel_deps="nvdec"
2834 h264_nvdec_hwaccel_select="h264_decoder"
2835 h264_vaapi_hwaccel_deps="vaapi"
2836 h264_vaapi_hwaccel_select="h264_decoder"
2837 h264_vdpau_hwaccel_deps="vdpau"
2838 h264_vdpau_hwaccel_select="h264_decoder"
2839 h264_videotoolbox_hwaccel_deps="videotoolbox"
2840 h264_videotoolbox_hwaccel_select="h264_decoder"
2841 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2842 hevc_d3d11va_hwaccel_select="hevc_decoder"
2843 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2844 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2845 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2846 hevc_dxva2_hwaccel_select="hevc_decoder"
2847 hevc_nvdec_hwaccel_deps="nvdec"
2848 hevc_nvdec_hwaccel_select="hevc_decoder"
2849 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2850 hevc_vaapi_hwaccel_select="hevc_decoder"
2851 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2852 hevc_vdpau_hwaccel_select="hevc_decoder"
2853 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2854 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2855 mjpeg_nvdec_hwaccel_deps="nvdec"
2856 mjpeg_nvdec_hwaccel_select="mjpeg_decoder"
2857 mjpeg_vaapi_hwaccel_deps="vaapi"
2858 mjpeg_vaapi_hwaccel_select="mjpeg_decoder"
2859 mpeg_xvmc_hwaccel_deps="xvmc"
2860 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2861 mpeg1_nvdec_hwaccel_deps="nvdec"
2862 mpeg1_nvdec_hwaccel_select="mpeg1video_decoder"
2863 mpeg1_vdpau_hwaccel_deps="vdpau"
2864 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2865 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2866 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2867 mpeg1_xvmc_hwaccel_deps="xvmc"
2868 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2869 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2870 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2871 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2872 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2873 mpeg2_dxva2_hwaccel_deps="dxva2"
2874 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2875 mpeg2_nvdec_hwaccel_deps="nvdec"
2876 mpeg2_nvdec_hwaccel_select="mpeg2video_decoder"
2877 mpeg2_vaapi_hwaccel_deps="vaapi"
2878 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2879 mpeg2_vdpau_hwaccel_deps="vdpau"
2880 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2881 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2882 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2883 mpeg2_xvmc_hwaccel_deps="xvmc"
2884 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2885 mpeg4_nvdec_hwaccel_deps="nvdec"
2886 mpeg4_nvdec_hwaccel_select="mpeg4_decoder"
2887 mpeg4_vaapi_hwaccel_deps="vaapi"
2888 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2889 mpeg4_vdpau_hwaccel_deps="vdpau"
2890 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2891 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2892 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2893 vc1_d3d11va_hwaccel_deps="d3d11va"
2894 vc1_d3d11va_hwaccel_select="vc1_decoder"
2895 vc1_d3d11va2_hwaccel_deps="d3d11va"
2896 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2897 vc1_dxva2_hwaccel_deps="dxva2"
2898 vc1_dxva2_hwaccel_select="vc1_decoder"
2899 vc1_nvdec_hwaccel_deps="nvdec"
2900 vc1_nvdec_hwaccel_select="vc1_decoder"
2901 vc1_vaapi_hwaccel_deps="vaapi"
2902 vc1_vaapi_hwaccel_select="vc1_decoder"
2903 vc1_vdpau_hwaccel_deps="vdpau"
2904 vc1_vdpau_hwaccel_select="vc1_decoder"
2905 vp8_nvdec_hwaccel_deps="nvdec"
2906 vp8_nvdec_hwaccel_select="vp8_decoder"
2907 vp8_vaapi_hwaccel_deps="vaapi"
2908 vp8_vaapi_hwaccel_select="vp8_decoder"
2909 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2910 vp9_d3d11va_hwaccel_select="vp9_decoder"
2911 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2912 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2913 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2914 vp9_dxva2_hwaccel_select="vp9_decoder"
2915 vp9_nvdec_hwaccel_deps="nvdec"
2916 vp9_nvdec_hwaccel_select="vp9_decoder"
2917 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2918 vp9_vaapi_hwaccel_select="vp9_decoder"
2919 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2920 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2921 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2922 wmv3_nvdec_hwaccel_select="vc1_nvdec_hwaccel"
2923 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2924 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2925
2926 # hardware-accelerated codecs
2927 omx_deps="libdl pthreads"
2928 omx_rpi_select="omx"
2929 qsv_deps="libmfx"
2930 qsvdec_select="qsv"
2931 qsvenc_select="qsv"
2932 qsvvpp_select="qsv"
2933 vaapi_encode_deps="vaapi"
2934 v4l2_m2m_deps="linux_videodev2_h sem_timedwait"
2935
2936 hwupload_cuda_filter_deps="ffnvcodec"
2937 scale_npp_filter_deps="ffnvcodec libnpp"
2938 scale_cuda_filter_deps="cuda_sdk"
2939 thumbnail_cuda_filter_deps="cuda_sdk"
2940 transpose_npp_filter_deps="ffnvcodec libnpp"
2941
2942 amf_deps_any="libdl LoadLibrary"
2943 nvenc_deps="ffnvcodec"
2944 nvenc_deps_any="libdl LoadLibrary"
2945 nvenc_encoder_deps="nvenc"
2946
2947 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
2948 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
2949 h264_amf_encoder_deps="amf"
2950 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2951 h264_cuvid_decoder_deps="cuvid"
2952 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2953 h264_mediacodec_decoder_deps="mediacodec"
2954 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2955 h264_mmal_decoder_deps="mmal"
2956 h264_nvenc_encoder_deps="nvenc"
2957 h264_omx_encoder_deps="omx"
2958 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec"
2959 h264_qsv_encoder_select="qsvenc"
2960 h264_rkmpp_decoder_deps="rkmpp"
2961 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
2962 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
2963 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
2964 h264_v4l2m2m_decoder_select="h264_mp4toannexb_bsf"
2965 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
2966 hevc_amf_encoder_deps="amf"
2967 hevc_cuvid_decoder_deps="cuvid"
2968 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2969 hevc_mediacodec_decoder_deps="mediacodec"
2970 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2971 hevc_nvenc_encoder_deps="nvenc"
2972 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec"
2973 hevc_qsv_encoder_select="hevcparse qsvenc"
2974 hevc_rkmpp_decoder_deps="rkmpp"
2975 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
2976 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2977 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
2978 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
2979 hevc_v4l2m2m_decoder_select="hevc_mp4toannexb_bsf"
2980 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
2981 mjpeg_cuvid_decoder_deps="cuvid"
2982 mjpeg_qsv_encoder_deps="libmfx"
2983 mjpeg_qsv_encoder_select="qsvenc"
2984 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2985 mjpeg_vaapi_encoder_select="cbs_jpeg jpegtables vaapi_encode"
2986 mpeg1_cuvid_decoder_deps="cuvid"
2987 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
2988 mpeg2_crystalhd_decoder_select="crystalhd"
2989 mpeg2_cuvid_decoder_deps="cuvid"
2990 mpeg2_mmal_decoder_deps="mmal"
2991 mpeg2_mediacodec_decoder_deps="mediacodec"
2992 mpeg2_qsv_decoder_select="qsvdec mpegvideo_parser"
2993 mpeg2_qsv_encoder_select="qsvenc"
2994 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
2995 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
2996 mpeg4_crystalhd_decoder_select="crystalhd"
2997 mpeg4_cuvid_decoder_deps="cuvid"
2998 mpeg4_mediacodec_decoder_deps="mediacodec"
2999 mpeg4_mmal_decoder_deps="mmal"
3000 mpeg4_omx_encoder_deps="omx"
3001 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
3002 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
3003 msmpeg4_crystalhd_decoder_select="crystalhd"
3004 nvenc_h264_encoder_select="h264_nvenc_encoder"
3005 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
3006 vc1_crystalhd_decoder_select="crystalhd"
3007 vc1_cuvid_decoder_deps="cuvid"
3008 vc1_mmal_decoder_deps="mmal"
3009 vc1_qsv_decoder_select="qsvdec vc1_parser"
3010 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
3011 vp8_cuvid_decoder_deps="cuvid"
3012 vp8_mediacodec_decoder_deps="mediacodec"
3013 vp8_qsv_decoder_select="qsvdec vp8_parser"
3014 vp8_rkmpp_decoder_deps="rkmpp"
3015 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
3016 vp8_vaapi_encoder_select="vaapi_encode"
3017 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
3018 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
3019 vp9_cuvid_decoder_deps="cuvid"
3020 vp9_mediacodec_decoder_deps="mediacodec"
3021 vp9_rkmpp_decoder_deps="rkmpp"
3022 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
3023 vp9_vaapi_encoder_select="vaapi_encode"
3024 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
3025 wmv3_crystalhd_decoder_select="crystalhd"
3026
3027 # parsers
3028 aac_parser_select="adts_header"
3029 av1_parser_select="cbs_av1"
3030 h264_parser_select="golomb h264dsp h264parse"
3031 hevc_parser_select="hevcparse"
3032 mpegaudio_parser_select="mpegaudioheader"
3033 mpegvideo_parser_select="mpegvideo"
3034 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
3035 vc1_parser_select="vc1dsp"
3036
3037 # bitstream_filters
3038 aac_adtstoasc_bsf_select="adts_header"
3039 av1_metadata_bsf_select="cbs_av1"
3040 eac3_core_bsf_select="ac3_parser"
3041 filter_units_bsf_select="cbs"
3042 h264_metadata_bsf_deps="const_nan"
3043 h264_metadata_bsf_select="cbs_h264"
3044 h264_redundant_pps_bsf_select="cbs_h264"
3045 hevc_metadata_bsf_select="cbs_h265"
3046 mjpeg2jpeg_bsf_select="jpegtables"
3047 mpeg2_metadata_bsf_select="cbs_mpeg2"
3048 trace_headers_bsf_select="cbs"
3049 truehd_core_bsf_select="mlp_parser"
3050 vp9_metadata_bsf_select="cbs_vp9"
3051
3052 # external libraries
3053 aac_at_decoder_deps="audiotoolbox"
3054 aac_at_decoder_select="aac_adtstoasc_bsf"
3055 ac3_at_decoder_deps="audiotoolbox"
3056 ac3_at_decoder_select="ac3_parser"
3057 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
3058 alac_at_decoder_deps="audiotoolbox"
3059 amr_nb_at_decoder_deps="audiotoolbox"
3060 avisynth_deps_any="libdl LoadLibrary"
3061 avisynth_demuxer_deps="avisynth"
3062 avisynth_demuxer_select="riffdec"
3063 eac3_at_decoder_deps="audiotoolbox"
3064 eac3_at_decoder_select="ac3_parser"
3065 gsm_ms_at_decoder_deps="audiotoolbox"
3066 ilbc_at_decoder_deps="audiotoolbox"
3067 mp1_at_decoder_deps="audiotoolbox"
3068 mp2_at_decoder_deps="audiotoolbox"
3069 mp3_at_decoder_deps="audiotoolbox"
3070 mp1_at_decoder_select="mpegaudioheader"
3071 mp2_at_decoder_select="mpegaudioheader"
3072 mp3_at_decoder_select="mpegaudioheader"
3073 pcm_alaw_at_decoder_deps="audiotoolbox"
3074 pcm_mulaw_at_decoder_deps="audiotoolbox"
3075 qdmc_at_decoder_deps="audiotoolbox"
3076 qdm2_at_decoder_deps="audiotoolbox"
3077 aac_at_encoder_deps="audiotoolbox"
3078 aac_at_encoder_select="audio_frame_queue"
3079 alac_at_encoder_deps="audiotoolbox"
3080 alac_at_encoder_select="audio_frame_queue"
3081 ilbc_at_encoder_deps="audiotoolbox"
3082 ilbc_at_encoder_select="audio_frame_queue"
3083 pcm_alaw_at_encoder_deps="audiotoolbox"
3084 pcm_alaw_at_encoder_select="audio_frame_queue"
3085 pcm_mulaw_at_encoder_deps="audiotoolbox"
3086 pcm_mulaw_at_encoder_select="audio_frame_queue"
3087 chromaprint_muxer_deps="chromaprint"
3088 h264_videotoolbox_encoder_deps="pthreads"
3089 h264_videotoolbox_encoder_select="videotoolbox_encoder"
3090 hevc_videotoolbox_encoder_deps="pthreads"
3091 hevc_videotoolbox_encoder_select="videotoolbox_encoder"
3092 libaom_av1_decoder_deps="libaom"
3093 libaom_av1_encoder_deps="libaom"
3094 libaom_av1_encoder_select="extract_extradata_bsf"
3095 libcelt_decoder_deps="libcelt"
3096 libcodec2_decoder_deps="libcodec2"
3097 libcodec2_encoder_deps="libcodec2"
3098 libdav1d_decoder_deps="libdav1d"
3099 libdavs2_decoder_deps="libdavs2"
3100 libfdk_aac_decoder_deps="libfdk_aac"
3101 libfdk_aac_encoder_deps="libfdk_aac"
3102 libfdk_aac_encoder_select="audio_frame_queue"
3103 libgme_demuxer_deps="libgme"
3104 libgsm_decoder_deps="libgsm"
3105 libgsm_encoder_deps="libgsm"
3106 libgsm_ms_decoder_deps="libgsm"
3107 libgsm_ms_encoder_deps="libgsm"
3108 libilbc_decoder_deps="libilbc"
3109 libilbc_encoder_deps="libilbc"
3110 libkvazaar_encoder_deps="libkvazaar"
3111 libmodplug_demuxer_deps="libmodplug"
3112 libmp3lame_encoder_deps="libmp3lame"
3113 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
3114 libopencore_amrnb_decoder_deps="libopencore_amrnb"
3115 libopencore_amrnb_encoder_deps="libopencore_amrnb"
3116 libopencore_amrnb_encoder_select="audio_frame_queue"
3117 libopencore_amrwb_decoder_deps="libopencore_amrwb"
3118 libopenh264_decoder_deps="libopenh264"
3119 libopenh264_decoder_select="h264_mp4toannexb_bsf"
3120 libopenh264_encoder_deps="libopenh264"
3121 libopenjpeg_decoder_deps="libopenjpeg"
3122 libopenjpeg_encoder_deps="libopenjpeg"
3123 libopenmpt_demuxer_deps="libopenmpt"
3124 libopus_decoder_deps="libopus"
3125 libopus_encoder_deps="libopus"
3126 libopus_encoder_select="audio_frame_queue"
3127 librsvg_decoder_deps="librsvg"
3128 libshine_encoder_deps="libshine"
3129 libshine_encoder_select="audio_frame_queue"
3130 libspeex_decoder_deps="libspeex"
3131 libspeex_encoder_deps="libspeex"
3132 libspeex_encoder_select="audio_frame_queue"
3133 libtheora_encoder_deps="libtheora"
3134 libtwolame_encoder_deps="libtwolame"
3135 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
3136 libvorbis_decoder_deps="libvorbis"
3137 libvorbis_encoder_deps="libvorbis libvorbisenc"
3138 libvorbis_encoder_select="audio_frame_queue"
3139 libvpx_vp8_decoder_deps="libvpx"
3140 libvpx_vp8_encoder_deps="libvpx"
3141 libvpx_vp9_decoder_deps="libvpx"
3142 libvpx_vp9_encoder_deps="libvpx"
3143 libwavpack_encoder_deps="libwavpack"
3144 libwavpack_encoder_select="audio_frame_queue"
3145 libwebp_encoder_deps="libwebp"
3146 libwebp_anim_encoder_deps="libwebp"
3147 libx262_encoder_deps="libx262"
3148 libx264_encoder_deps="libx264"
3149 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
3150 libx264rgb_encoder_select="libx264_encoder"
3151 libx265_encoder_deps="libx265"
3152 libxavs_encoder_deps="libxavs"
3153 libxavs2_encoder_deps="libxavs2"
3154 libxvid_encoder_deps="libxvid"
3155 libzvbi_teletext_decoder_deps="libzvbi"
3156 vapoursynth_demuxer_deps="vapoursynth"
3157 videotoolbox_suggest="coreservices"
3158 videotoolbox_deps="corefoundation coremedia corevideo"
3159 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
3160
3161 # demuxers / muxers
3162 ac3_demuxer_select="ac3_parser"
3163 aiff_muxer_select="iso_media"
3164 asf_demuxer_select="riffdec"
3165 asf_o_demuxer_select="riffdec"
3166 asf_muxer_select="riffenc"
3167 asf_stream_muxer_select="asf_muxer"
3168 avi_demuxer_select="iso_media riffdec exif"
3169 avi_muxer_select="riffenc"
3170 caf_demuxer_select="iso_media riffdec"
3171 caf_muxer_select="iso_media"
3172 dash_muxer_select="mp4_muxer"
3173 dash_demuxer_deps="libxml2"
3174 dirac_demuxer_select="dirac_parser"
3175 dts_demuxer_select="dca_parser"
3176 dtshd_demuxer_select="dca_parser"
3177 dv_demuxer_select="dvprofile"
3178 dv_muxer_select="dvprofile"
3179 dxa_demuxer_select="riffdec"
3180 eac3_demuxer_select="ac3_parser"
3181 f4v_muxer_select="mov_muxer"
3182 fifo_muxer_deps="threads"
3183 flac_demuxer_select="flac_parser"
3184 hds_muxer_select="flv_muxer"
3185 hls_muxer_select="mpegts_muxer"
3186 hls_muxer_suggest="gcrypt openssl"
3187 image2_alias_pix_demuxer_select="image2_demuxer"
3188 image2_brender_pix_demuxer_select="image2_demuxer"
3189 ipod_muxer_select="mov_muxer"
3190 ismv_muxer_select="mov_muxer"
3191 ivf_muxer_select="av1_metadata_bsf vp9_superframe_bsf"
3192 matroska_audio_muxer_select="matroska_muxer"
3193 matroska_demuxer_select="iso_media riffdec"
3194 matroska_demuxer_suggest="bzlib lzo zlib"
3195 matroska_muxer_select="iso_media riffenc"
3196 mmf_muxer_select="riffenc"
3197 mov_demuxer_select="iso_media riffdec"
3198 mov_demuxer_suggest="zlib"
3199 mov_muxer_select="iso_media riffenc rtpenc_chain"
3200 mp3_demuxer_select="mpegaudio_parser"
3201 mp3_muxer_select="mpegaudioheader"
3202 mp4_muxer_select="mov_muxer"
3203 mpegts_demuxer_select="iso_media"
3204 mpegts_muxer_select="adts_muxer latm_muxer"
3205 mpegtsraw_demuxer_select="mpegts_demuxer"
3206 mxf_d10_muxer_select="mxf_muxer"
3207 mxf_opatom_muxer_select="mxf_muxer"
3208 nut_muxer_select="riffenc"
3209 nuv_demuxer_select="riffdec"
3210 oga_muxer_select="ogg_muxer"
3211 ogg_demuxer_select="dirac_parse"
3212 ogv_muxer_select="ogg_muxer"
3213 opus_muxer_select="ogg_muxer"
3214 psp_muxer_select="mov_muxer"
3215 rtp_demuxer_select="sdp_demuxer"
3216 rtp_muxer_select="golomb"
3217 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3218 rtsp_demuxer_select="http_protocol rtpdec"
3219 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3220 sap_demuxer_select="sdp_demuxer"
3221 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3222 sdp_demuxer_select="rtpdec"
3223 smoothstreaming_muxer_select="ismv_muxer"
3224 spdif_demuxer_select="adts_header"
3225 spdif_muxer_select="adts_header"
3226 spx_muxer_select="ogg_muxer"
3227 swf_demuxer_suggest="zlib"
3228 tak_demuxer_select="tak_parser"
3229 tg2_muxer_select="mov_muxer"
3230 tgp_muxer_select="mov_muxer"
3231 vobsub_demuxer_select="mpegps_demuxer"
3232 w64_demuxer_select="wav_demuxer"
3233 w64_muxer_select="wav_muxer"
3234 wav_demuxer_select="riffdec"
3235 wav_muxer_select="riffenc"
3236 webm_muxer_select="iso_media riffenc"
3237 webm_dash_manifest_demuxer_select="matroska_demuxer"
3238 wtv_demuxer_select="mpegts_demuxer riffdec"
3239 wtv_muxer_select="mpegts_muxer riffenc"
3240 xmv_demuxer_select="riffdec"
3241 xwma_demuxer_select="riffdec"
3242
3243 # indevs / outdevs
3244 android_camera_indev_deps="android camera2ndk mediandk pthreads"
3245 android_camera_indev_extralibs="-landroid -lcamera2ndk -lmediandk"
3246 alsa_indev_deps="alsa"
3247 alsa_outdev_deps="alsa"
3248 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3249 avfoundation_indev_suggest="coregraphics applicationservices"
3250 avfoundation_indev_extralibs="-framework Foundation"
3251 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3252 caca_outdev_deps="libcaca"
3253 decklink_deps_any="libdl LoadLibrary"
3254 decklink_indev_deps="decklink threads"
3255 decklink_indev_extralibs="-lstdc++"
3256 decklink_outdev_deps="decklink threads"
3257 decklink_outdev_suggest="libklvanc"
3258 decklink_outdev_extralibs="-lstdc++"
3259 libndi_newtek_indev_deps="libndi_newtek"
3260 libndi_newtek_indev_extralibs="-lndi"
3261 libndi_newtek_outdev_deps="libndi_newtek"
3262 libndi_newtek_outdev_extralibs="-lndi"
3263 dshow_indev_deps="IBaseFilter"
3264 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3265 fbdev_indev_deps="linux_fb_h"
3266 fbdev_outdev_deps="linux_fb_h"
3267 gdigrab_indev_deps="CreateDIBSection"
3268 gdigrab_indev_extralibs="-lgdi32"
3269 gdigrab_indev_select="bmp_decoder"
3270 iec61883_indev_deps="libiec61883"
3271 jack_indev_deps="libjack"
3272 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3273 kmsgrab_indev_deps="libdrm"
3274 lavfi_indev_deps="avfilter"
3275 libcdio_indev_deps="libcdio"
3276 libdc1394_indev_deps="libdc1394"
3277 openal_indev_deps="openal"
3278 opengl_outdev_deps="opengl"
3279 opengl_outdev_suggest="sdl2"
3280 oss_indev_deps_any="sys_soundcard_h"
3281 oss_outdev_deps_any="sys_soundcard_h"
3282 pulse_indev_deps="libpulse"
3283 pulse_outdev_deps="libpulse"
3284 sdl2_outdev_deps="sdl2"
3285 sndio_indev_deps="sndio"
3286 sndio_outdev_deps="sndio"
3287 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3288 v4l2_indev_suggest="libv4l2"
3289 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3290 v4l2_outdev_suggest="libv4l2"
3291 vfwcap_indev_deps="vfw32 vfwcap_defines"
3292 xcbgrab_indev_deps="libxcb"
3293 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3294 xv_outdev_deps="xlib"
3295
3296 # protocols
3297 async_protocol_deps="threads"
3298 bluray_protocol_deps="libbluray"
3299 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3300 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl mbedtls"
3301 ffrtmpcrypt_protocol_select="tcp_protocol"
3302 ffrtmphttp_protocol_conflict="librtmp_protocol"
3303 ffrtmphttp_protocol_select="http_protocol"
3304 ftp_protocol_select="tcp_protocol"
3305 gopher_protocol_select="network"
3306 http_protocol_select="tcp_protocol"
3307 http_protocol_suggest="zlib"
3308 httpproxy_protocol_select="tcp_protocol"
3309 httpproxy_protocol_suggest="zlib"
3310 https_protocol_select="tls_protocol"
3311 https_protocol_suggest="zlib"
3312 icecast_protocol_select="http_protocol"
3313 mmsh_protocol_select="http_protocol"
3314 mmst_protocol_select="network"
3315 rtmp_protocol_conflict="librtmp_protocol"
3316 rtmp_protocol_select="tcp_protocol"
3317 rtmp_protocol_suggest="zlib"
3318 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3319 rtmpe_protocol_suggest="zlib"
3320 rtmps_protocol_conflict="librtmp_protocol"
3321 rtmps_protocol_select="tls_protocol"
3322 rtmps_protocol_suggest="zlib"
3323 rtmpt_protocol_select="ffrtmphttp_protocol"
3324 rtmpt_protocol_suggest="zlib"
3325 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3326 rtmpte_protocol_suggest="zlib"
3327 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3328 rtmpts_protocol_suggest="zlib"
3329 rtp_protocol_select="udp_protocol"
3330 schannel_conflict="openssl gnutls libtls mbedtls"
3331 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3332 sctp_protocol_select="network"
3333 securetransport_conflict="openssl gnutls libtls mbedtls"
3334 srtp_protocol_select="rtp_protocol srtp"
3335 tcp_protocol_select="network"
3336 tls_protocol_deps_any="gnutls openssl schannel securetransport libtls mbedtls"
3337 tls_protocol_select="tcp_protocol"
3338 udp_protocol_select="network"
3339 udplite_protocol_select="network"
3340 unix_protocol_deps="sys_un_h"
3341 unix_protocol_select="network"
3342
3343 # external library protocols
3344 librtmp_protocol_deps="librtmp"
3345 librtmpe_protocol_deps="librtmp"
3346 librtmps_protocol_deps="librtmp"
3347 librtmpt_protocol_deps="librtmp"
3348 librtmpte_protocol_deps="librtmp"
3349 libsmbclient_protocol_deps="libsmbclient gplv3"
3350 libsrt_protocol_deps="libsrt"
3351 libsrt_protocol_select="network"
3352 libssh_protocol_deps="libssh"
3353 libtls_conflict="openssl gnutls mbedtls"
3354
3355 # filters
3356 afftdn_filter_deps="avcodec"
3357 afftdn_filter_select="fft"
3358 afftfilt_filter_deps="avcodec"
3359 afftfilt_filter_select="fft"
3360 afir_filter_deps="avcodec"
3361 afir_filter_select="fft"
3362 amovie_filter_deps="avcodec avformat"
3363 aresample_filter_deps="swresample"
3364 ass_filter_deps="libass"
3365 atempo_filter_deps="avcodec"
3366 atempo_filter_select="rdft"
3367 avgblur_opencl_filter_deps="opencl"
3368 azmq_filter_deps="libzmq"
3369 blackframe_filter_deps="gpl"
3370 bm3d_filter_deps="avcodec"
3371 bm3d_filter_select="dct"
3372 boxblur_filter_deps="gpl"
3373 boxblur_opencl_filter_deps="opencl gpl"
3374 bs2b_filter_deps="libbs2b"
3375 colormatrix_filter_deps="gpl"
3376 convolution_opencl_filter_deps="opencl"
3377 convolve_filter_deps="avcodec"
3378 convolve_filter_select="fft"
3379 coreimage_filter_deps="coreimage appkit"
3380 coreimage_filter_extralibs="-framework OpenGL"
3381 coreimagesrc_filter_deps="coreimage appkit"
3382 coreimagesrc_filter_extralibs="-framework OpenGL"
3383 cover_rect_filter_deps="avcodec avformat gpl"
3384 cropdetect_filter_deps="gpl"
3385 deconvolve_filter_deps="avcodec"
3386 deconvolve_filter_select="fft"
3387 deinterlace_qsv_filter_deps="libmfx"
3388 deinterlace_vaapi_filter_deps="vaapi"
3389 delogo_filter_deps="gpl"
3390 denoise_vaapi_filter_deps="vaapi"
3391 deshake_filter_select="pixelutils"
3392 dilation_opencl_filter_deps="opencl"
3393 drawtext_filter_deps="libfreetype"
3394 drawtext_filter_suggest="libfontconfig libfribidi"
3395 elbg_filter_deps="avcodec"
3396 eq_filter_deps="gpl"
3397 erosion_opencl_filter_deps="opencl"
3398 fftfilt_filter_deps="avcodec"
3399 fftfilt_filter_select="rdft"
3400 fftdnoiz_filter_deps="avcodec"
3401 fftdnoiz_filter_select="fft"
3402 find_rect_filter_deps="avcodec avformat gpl"
3403 firequalizer_filter_deps="avcodec"
3404 firequalizer_filter_select="rdft"
3405 flite_filter_deps="libflite"
3406 framerate_filter_select="scene_sad"
3407 freezedetect_filter_select="scene_sad"
3408 frei0r_filter_deps="frei0r libdl"
3409 frei0r_src_filter_deps="frei0r libdl"
3410 fspp_filter_deps="gpl"
3411 geq_filter_deps="gpl"
3412 histeq_filter_deps="gpl"
3413 hqdn3d_filter_deps="gpl"
3414 interlace_filter_deps="gpl"
3415 kerndeint_filter_deps="gpl"
3416 ladspa_filter_deps="ladspa libdl"
3417 lensfun_filter_deps="liblensfun version3"
3418 lv2_filter_deps="lv2"
3419 mcdeint_filter_deps="avcodec gpl"
3420 movie_filter_deps="avcodec avformat"
3421 mpdecimate_filter_deps="gpl"
3422 mpdecimate_filter_select="pixelutils"
3423 minterpolate_filter_select="scene_sad"
3424 mptestsrc_filter_deps="gpl"
3425 negate_filter_deps="lut_filter"
3426 nnedi_filter_deps="gpl"
3427 ocr_filter_deps="libtesseract"
3428 ocv_filter_deps="libopencv"
3429 openclsrc_filter_deps="opencl"
3430 overlay_opencl_filter_deps="opencl"
3431 overlay_qsv_filter_deps="libmfx"
3432 overlay_qsv_filter_select="qsvvpp"
3433 owdenoise_filter_deps="gpl"
3434 pan_filter_deps="swresample"
3435 perspective_filter_deps="gpl"
3436 phase_filter_deps="gpl"
3437 pp7_filter_deps="gpl"
3438 pp_filter_deps="gpl postproc"
3439 prewitt_opencl_filter_deps="opencl"
3440 procamp_vaapi_filter_deps="vaapi"
3441 program_opencl_filter_deps="opencl"
3442 pullup_filter_deps="gpl"
3443 removelogo_filter_deps="avcodec avformat swscale"
3444 repeatfields_filter_deps="gpl"
3445 resample_filter_deps="avresample"
3446 roberts_opencl_filter_deps="opencl"
3447 rubberband_filter_deps="librubberband"
3448 sab_filter_deps="gpl swscale"
3449 scale2ref_filter_deps="swscale"
3450 scale_filter_deps="swscale"
3451 scale_qsv_filter_deps="libmfx"
3452 select_filter_select="scene_sad"
3453 sharpness_vaapi_filter_deps="vaapi"
3454 showcqt_filter_deps="avcodec avformat swscale"
3455 showcqt_filter_suggest="libfontconfig libfreetype"
3456 showcqt_filter_select="fft"
3457 showfreqs_filter_deps="avcodec"
3458 showfreqs_filter_select="fft"
3459 showspectrum_filter_deps="avcodec"
3460 showspectrum_filter_select="fft"
3461 showspectrumpic_filter_deps="avcodec"
3462 showspectrumpic_filter_select="fft"
3463 signature_filter_deps="gpl avcodec avformat"
3464 smartblur_filter_deps="gpl swscale"
3465 sobel_opencl_filter_deps="opencl"
3466 sofalizer_filter_deps="libmysofa avcodec"
3467 sofalizer_filter_select="fft"
3468 spectrumsynth_filter_deps="avcodec"
3469 spectrumsynth_filter_select="fft"
3470 spp_filter_deps="gpl avcodec"
3471 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3472 sr_filter_deps="avformat swscale"
3473 sr_filter_select="dnn"
3474 stereo3d_filter_deps="gpl"
3475 subtitles_filter_deps="avformat avcodec libass"
3476 super2xsai_filter_deps="gpl"
3477 pixfmts_super2xsai_test_deps="super2xsai_filter"
3478 tinterlace_filter_deps="gpl"
3479 tinterlace_merge_test_deps="tinterlace_filter"
3480 tinterlace_pad_test_deps="tinterlace_filter"
3481 tonemap_filter_deps="const_nan"
3482 tonemap_opencl_filter_deps="opencl const_nan"
3483 transpose_opencl_filter_deps="opencl"
3484 unsharp_opencl_filter_deps="opencl"
3485 uspp_filter_deps="gpl avcodec"
3486 vaguedenoiser_filter_deps="gpl"
3487 vidstabdetect_filter_deps="libvidstab"
3488 vidstabtransform_filter_deps="libvidstab"
3489 libvmaf_filter_deps="libvmaf pthreads"
3490 zmq_filter_deps="libzmq"
3491 zoompan_filter_deps="swscale"
3492 zscale_filter_deps="libzimg const_nan"
3493 scale_vaapi_filter_deps="vaapi"
3494 vpp_qsv_filter_deps="libmfx"
3495 vpp_qsv_filter_select="qsvvpp"
3496 yadif_cuda_filter_deps="cuda_sdk"
3497
3498 # examples
3499 avio_dir_cmd_deps="avformat avutil"
3500 avio_reading_deps="avformat avcodec avutil"
3501 decode_audio_example_deps="avcodec avutil"
3502 decode_video_example_deps="avcodec avutil"
3503 demuxing_decoding_example_deps="avcodec avformat avutil"
3504 encode_audio_example_deps="avcodec avutil"
3505 encode_video_example_deps="avcodec avutil"
3506 extract_mvs_example_deps="avcodec avformat avutil"
3507 filter_audio_example_deps="avfilter avutil"
3508 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3509 filtering_video_example_deps="avfilter avcodec avformat avutil"
3510 http_multiclient_example_deps="avformat avutil fork"
3511 hw_decode_example_deps="avcodec avformat avutil"
3512 metadata_example_deps="avformat avutil"
3513 muxing_example_deps="avcodec avformat avutil swscale"
3514 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3515 remuxing_example_deps="avcodec avformat avutil"
3516 resampling_audio_example_deps="avutil swresample"
3517 scaling_video_example_deps="avutil swscale"
3518 transcode_aac_example_deps="avcodec avformat swresample"
3519 transcoding_example_deps="avfilter avcodec avformat avutil"
3520 vaapi_encode_example_deps="avcodec avutil h264_vaapi_encoder"
3521 vaapi_transcode_example_deps="avcodec avformat avutil h264_vaapi_encoder"
3522
3523 # EXTRALIBS_LIST
3524 cpu_init_extralibs="pthreads_extralibs"
3525 cws2fws_extralibs="zlib_extralibs"
3526
3527 # libraries, in any order
3528 avcodec_deps="avutil"
3529 avcodec_suggest="libm"
3530 avcodec_select="null_bsf"
3531 avdevice_deps="avformat avcodec avutil"
3532 avdevice_suggest="libm"
3533 avfilter_deps="avutil"
3534 avfilter_suggest="libm"
3535 avformat_deps="avcodec avutil"
3536 avformat_suggest="libm network zlib"
3537 avresample_deps="avutil"
3538 avresample_suggest="libm"
3539 avutil_suggest="clock_gettime ffnvcodec libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia bcrypt"
3540 postproc_deps="avutil gpl"
3541 postproc_suggest="libm"
3542 swresample_deps="avutil"
3543 swresample_suggest="libm libsoxr"
3544 swscale_deps="avutil"
3545 swscale_suggest="libm"
3546
3547 avcodec_extralibs="pthreads_extralibs iconv_extralibs"
3548 avfilter_extralibs="pthreads_extralibs"
3549 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3550
3551 # programs
3552 ffmpeg_deps="avcodec avfilter avformat"
3553 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3554                null_filter
3555                trim_filter"
3556 ffmpeg_suggest="ole32 psapi shell32"
3557 ffplay_deps="avcodec avformat swscale swresample sdl2"
3558 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3559 ffplay_suggest="shell32"
3560 ffprobe_deps="avcodec avformat"
3561 ffprobe_suggest="shell32"
3562
3563 # documentation
3564 podpages_deps="perl"
3565 manpages_deps="perl pod2man"
3566 htmlpages_deps="perl"
3567 htmlpages_deps_any="makeinfo_html texi2html"
3568 txtpages_deps="perl makeinfo"
3569 doc_deps_any="manpages htmlpages podpages txtpages"
3570
3571 # default parameters
3572
3573 logfile="ffbuild/config.log"
3574
3575 # installation paths
3576 prefix_default="/usr/local"
3577 bindir_default='${prefix}/bin'
3578 datadir_default='${prefix}/share/ffmpeg'
3579 docdir_default='${prefix}/share/doc/ffmpeg'
3580 incdir_default='${prefix}/include'
3581 libdir_default='${prefix}/lib'
3582 mandir_default='${prefix}/share/man'
3583
3584 # toolchain
3585 ar_default="ar"
3586 cc_default="gcc"
3587 cxx_default="g++"
3588 host_cc_default="gcc"
3589 doxygen_default="doxygen"
3590 install="install"
3591 ln_s_default="ln -s -f"
3592 nm_default="nm -g"
3593 pkg_config_default=pkg-config
3594 ranlib_default="ranlib"
3595 strip_default="strip"
3596 version_script='--version-script'
3597 objformat="elf32"
3598 x86asmexe_default="nasm"
3599 windres_default="windres"
3600 nvcc_default="nvcc"
3601 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3602 striptype="direct"
3603
3604 # OS
3605 target_os_default=$(tolower $(uname -s))
3606 host_os=$target_os_default
3607
3608 # machine
3609 if test "$target_os_default" = aix; then
3610     arch_default=$(uname -p)
3611     strip_default="strip -X32_64"
3612     nm_default="nm -g -X32_64"
3613 else
3614     arch_default=$(uname -m)
3615 fi
3616 cpu="generic"
3617 intrinsics="none"
3618
3619 # configurable options
3620 enable $PROGRAM_LIST
3621 enable $DOCUMENT_LIST
3622 enable $EXAMPLE_LIST
3623 enable $(filter_out avresample $LIBRARY_LIST)
3624 enable stripping
3625
3626 enable asm
3627 enable debug
3628 enable doc
3629 enable faan faandct faanidct
3630 enable optimizations
3631 enable runtime_cpudetect
3632 enable safe_bitstream_reader
3633 enable static
3634 enable swscale_alpha
3635 enable valgrind_backtrace
3636
3637 sws_max_filter_size_default=256
3638 set_default sws_max_filter_size
3639
3640 # internal components are enabled by default
3641 enable $EXTRALIBS_LIST
3642
3643 # Avoid external, non-system, libraries getting enabled by dependency resolution
3644 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3645
3646 # build settings
3647 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3648 LIBPREF="lib"
3649 LIBSUF=".a"
3650 FULLNAME='$(NAME)$(BUILDSUF)'
3651 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3652 SLIBPREF="lib"
3653 SLIBSUF=".so"
3654 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3655 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3656 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3657 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3658 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3659 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3660 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3661
3662 asflags_filter=echo
3663 cflags_filter=echo
3664 ldflags_filter=echo
3665
3666 AS_C='-c'
3667 AS_O='-o $@'
3668 CC_C='-c'
3669 CC_E='-E -o $@'
3670 CC_O='-o $@'
3671 CXX_C='-c'
3672 CXX_O='-o $@'
3673 OBJCC_C='-c'
3674 OBJCC_E='-E -o $@'
3675 OBJCC_O='-o $@'
3676 X86ASM_O='-o $@'
3677 LD_O='-o $@'
3678 LD_LIB='-l%'
3679 LD_PATH='-L'
3680 HOSTCC_C='-c'
3681 HOSTCC_E='-E -o $@'
3682 HOSTCC_O='-o $@'
3683 HOSTLD_O='-o $@'
3684 NVCC_C='-c'
3685 NVCC_O='-o $@'
3686
3687 host_extralibs='-lm'
3688 host_cflags_filter=echo
3689 host_ldflags_filter=echo
3690
3691 target_path='$(CURDIR)'
3692
3693 # since the object filename is not given with the -MM flag, the compiler
3694 # is only able to print the basename, and we must add the path ourselves
3695 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3696 DEPFLAGS='-MM'
3697
3698 mkdir -p ffbuild
3699
3700 # find source path
3701 if test -f configure; then
3702     source_path=.
3703 else
3704     source_path=$(cd $(dirname "$0"); pwd)
3705     case "$source_path" in
3706         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3707     esac
3708     test -e "$source_path/config.h" &&
3709         die "Out of tree builds are impossible with config.h in source dir."
3710 fi
3711
3712 for v in "$@"; do
3713     r=${v#*=}
3714     l=${v%"$r"}
3715     r=$(sh_quote "$r")
3716     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3717 done
3718
3719 find_things_extern(){
3720     thing=$1
3721     pattern=$2
3722     file=$source_path/$3
3723     out=${4:-$thing}
3724     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$out/p" "$file"
3725 }
3726
3727 find_filters_extern(){
3728     file=$source_path/$1
3729     sed -n 's/^extern AVFilter ff_[avfsinkrc]\{2,5\}_\([[:alnum:]_]\{1,\}\);/\1_filter/p' $file
3730 }
3731
3732 FILTER_LIST=$(find_filters_extern libavfilter/allfilters.c)
3733 OUTDEV_LIST=$(find_things_extern muxer AVOutputFormat libavdevice/alldevices.c outdev)
3734 INDEV_LIST=$(find_things_extern demuxer AVInputFormat libavdevice/alldevices.c indev)
3735 MUXER_LIST=$(find_things_extern muxer AVOutputFormat libavformat/allformats.c)
3736 DEMUXER_LIST=$(find_things_extern demuxer AVInputFormat libavformat/allformats.c)
3737 ENCODER_LIST=$(find_things_extern encoder AVCodec libavcodec/allcodecs.c)
3738 DECODER_LIST=$(find_things_extern decoder AVCodec libavcodec/allcodecs.c)
3739 CODEC_LIST="
3740     $ENCODER_LIST
3741     $DECODER_LIST
3742 "
3743 PARSER_LIST=$(find_things_extern parser AVCodecParser libavcodec/parsers.c)
3744 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3745 HWACCEL_LIST=$(find_things_extern hwaccel AVHWAccel libavcodec/hwaccels.h)
3746 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3747
3748 AVCODEC_COMPONENTS_LIST="
3749     $BSF_LIST
3750     $DECODER_LIST
3751     $ENCODER_LIST
3752     $HWACCEL_LIST
3753     $PARSER_LIST
3754 "
3755
3756 AVDEVICE_COMPONENTS_LIST="
3757     $INDEV_LIST
3758     $OUTDEV_LIST
3759 "
3760
3761 AVFILTER_COMPONENTS_LIST="
3762     $FILTER_LIST
3763 "
3764
3765 AVFORMAT_COMPONENTS_LIST="
3766     $DEMUXER_LIST
3767     $MUXER_LIST
3768     $PROTOCOL_LIST
3769 "
3770
3771 ALL_COMPONENTS="
3772     $AVCODEC_COMPONENTS_LIST
3773     $AVDEVICE_COMPONENTS_LIST
3774     $AVFILTER_COMPONENTS_LIST
3775     $AVFORMAT_COMPONENTS_LIST
3776 "
3777
3778 for n in $COMPONENT_LIST; do
3779     v=$(toupper ${n%s})_LIST
3780     eval enable \$$v
3781     eval ${n}_if_any="\$$v"
3782 done
3783
3784 enable $ARCH_EXT_LIST
3785
3786 die_unknown(){
3787     echo "Unknown option \"$1\"."
3788     echo "See $0 --help for available options."
3789     exit 1
3790 }
3791
3792 print_in_columns() {
3793     cols=$(expr $ncols / 24)
3794     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3795 }
3796
3797 show_list() {
3798     suffix=_$1
3799     shift
3800     echo $* | sed s/$suffix//g | print_in_columns
3801     exit 0
3802 }
3803
3804 rand_list(){
3805     IFS=', '
3806     set -- $*
3807     unset IFS
3808     for thing; do
3809         comp=${thing%:*}
3810         prob=${thing#$comp}
3811         prob=${prob#:}
3812         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3813         echo "prob ${prob:-0.5}"
3814         printf '%s\n' $comp
3815     done
3816 }
3817
3818 do_random(){
3819     action=$1
3820     shift
3821     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3822     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3823 }
3824
3825 for opt do
3826     optval="${opt#*=}"
3827     case "$opt" in
3828         --extra-ldflags=*)
3829             add_ldflags $optval
3830         ;;
3831         --extra-ldexeflags=*)
3832             add_ldexeflags $optval
3833         ;;
3834         --extra-ldsoflags=*)
3835             add_ldsoflags $optval
3836         ;;
3837         --extra-ldlibflags=*)
3838             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3839                  "removed in the future. Use --extra-ldsoflags instead."
3840             add_ldsoflags $optval
3841         ;;
3842         --extra-libs=*)
3843             add_extralibs $optval
3844         ;;
3845         --disable-devices)
3846             disable $INDEV_LIST $OUTDEV_LIST
3847         ;;
3848         --enable-debug=*)
3849             debuglevel="$optval"
3850         ;;
3851         --disable-programs)
3852             disable $PROGRAM_LIST
3853         ;;
3854         --disable-everything)
3855             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3856         ;;
3857         --disable-all)
3858             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3859             disable $LIBRARY_LIST $PROGRAM_LIST doc
3860             enable avutil
3861         ;;
3862         --enable-random|--disable-random)
3863             action=${opt%%-random}
3864             do_random ${action#--} $COMPONENT_LIST
3865         ;;
3866         --enable-random=*|--disable-random=*)
3867             action=${opt%%-random=*}
3868             do_random ${action#--} $optval
3869         ;;
3870         --enable-sdl)
3871             enable sdl2
3872         ;;
3873         --enable-*=*|--disable-*=*)
3874             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3875             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3876             eval list=\$$(toupper $thing)_LIST
3877             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3878             list=$(filter "$name" $list)
3879             [ "$list" = "" ] && warn "Option $opt did not match anything"
3880             $action $list
3881         ;;
3882         --enable-yasm|--disable-yasm)
3883             warn "The ${opt} option is only provided for compatibility and will be\n"\
3884                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3885             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3886         ;;
3887         --yasmexe=*)
3888             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3889                  "removed in the future. Use --x86asmexe instead."
3890             x86asmexe="$optval"
3891         ;;
3892         --enable-?*|--disable-?*)
3893             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3894             if is_in $option $COMPONENT_LIST; then
3895                 test $action = disable && action=unset
3896                 eval $action \$$(toupper ${option%s})_LIST
3897             elif is_in $option $CMDLINE_SELECT; then
3898                 $action $option
3899             else
3900                 die_unknown $opt
3901             fi
3902         ;;
3903         --list-*)
3904             NAME="${opt#--list-}"
3905             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3906             NAME=${NAME%s}
3907             eval show_list $NAME \$$(toupper $NAME)_LIST
3908         ;;
3909         --help|-h) show_help
3910         ;;
3911         --quiet|-q) quiet=yes
3912         ;;
3913         --fatal-warnings) enable fatal_warnings
3914         ;;
3915         --libfuzzer=*)
3916             libfuzzer_path="$optval"
3917         ;;
3918         *)
3919             optname="${opt%%=*}"
3920             optname="${optname#--}"
3921             optname=$(echo "$optname" | sed 's/-/_/g')
3922             if is_in $optname $CMDLINE_SET; then
3923                 eval $optname='$optval'
3924             elif is_in $optname $CMDLINE_APPEND; then
3925                 append $optname "$optval"
3926             else
3927                 die_unknown $opt
3928             fi
3929         ;;
3930     esac
3931 done
3932
3933 for e in $env; do
3934     eval "export $e"
3935 done
3936
3937 if disabled autodetect; then
3938
3939     # Unless iconv is explicitely disabled by the user, we still want to probe
3940     # for the iconv from the libc.
3941     disabled iconv || enable libc_iconv
3942
3943     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3944     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3945 fi
3946 # Mark specifically enabled, but normally autodetected libraries as requested.
3947 for lib in $AUTODETECT_LIBS; do
3948     enabled $lib && request $lib
3949 done
3950 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
3951 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3952 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3953
3954 disabled logging && logfile=/dev/null
3955
3956 # command line configuration sanity checks
3957
3958 # we need to build at least one lib type
3959 if ! enabled_any static shared; then
3960     cat <<EOF
3961 At least one library type must be built.
3962 Specify --enable-static to build the static libraries or --enable-shared to
3963 build the shared libraries as well. To only build the shared libraries specify
3964 --disable-static in addition to --enable-shared.
3965 EOF
3966     exit 1
3967 fi
3968
3969 die_license_disabled() {
3970     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3971 }
3972
3973 die_license_disabled_gpl() {
3974     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3975 }
3976
3977 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3978 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3979
3980 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3981 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3982
3983 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3984
3985 if enabled nonfree; then
3986     license="nonfree and unredistributable"
3987 elif enabled gplv3; then
3988     license="GPL version 3 or later"
3989 elif enabled lgplv3; then
3990     license="LGPL version 3 or later"
3991 elif enabled gpl; then
3992     license="GPL version 2 or later"
3993 else
3994     license="LGPL version 2.1 or later"
3995 fi
3996
3997 enabled_all gnutls openssl &&
3998     die "GnuTLS and OpenSSL must not be enabled at the same time."
3999
4000 enabled_all gnutls mbedtls &&
4001     die "GnuTLS and mbedTLS must not be enabled at the same time."
4002
4003 enabled_all openssl mbedtls &&
4004     die "OpenSSL and mbedTLS must not be enabled at the same time."
4005
4006 # Disable all the library-specific components if the library itself
4007 # is disabled, see AVCODEC_LIST and following _LIST variables.
4008
4009 disable_components(){
4010     disabled ${1} && disable $(
4011         eval components="\$$(toupper ${1})_COMPONENTS"
4012         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
4013     )
4014 }
4015
4016 map 'disable_components $v' $LIBRARY_LIST
4017
4018 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
4019 set >> $logfile
4020
4021 test -n "$valgrind" && toolchain="valgrind-memcheck"
4022
4023 enabled ossfuzz && ! echo $CFLAGS | grep -q -- "-fsanitize="  && ! echo $CFLAGS | grep -q -- "-fcoverage-mapping" &&{
4024     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
4025     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
4026 }
4027
4028 case "$toolchain" in
4029     *-asan)
4030         cc_default="${toolchain%-asan}"
4031         add_cflags  -fsanitize=address
4032         add_ldflags -fsanitize=address
4033     ;;
4034     *-msan)
4035         cc_default="${toolchain%-msan}"
4036         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
4037         add_ldflags -fsanitize=memory
4038     ;;
4039     *-tsan)
4040         cc_default="${toolchain%-tsan}"
4041         add_cflags  -fsanitize=thread
4042         add_ldflags -fsanitize=thread
4043         case "$toolchain" in
4044             gcc-tsan)
4045                 add_cflags  -fPIC
4046                 add_ldflags -fPIC
4047                 ;;
4048         esac
4049     ;;
4050     *-usan)
4051         cc_default="${toolchain%-usan}"
4052         add_cflags  -fsanitize=undefined
4053         add_ldflags -fsanitize=undefined
4054     ;;
4055     valgrind-*)
4056         target_exec_default="valgrind"
4057         case "$toolchain" in
4058             valgrind-massif)
4059                 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"
4060                 ;;
4061             valgrind-memcheck)
4062                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
4063                 ;;
4064         esac
4065     ;;
4066     msvc)
4067         # Check whether the current MSVC version needs the C99 converter.
4068         # From MSVC 2013 (compiler major version 18) onwards, it does actually
4069         # support enough of C99 to build ffmpeg. Default to the new
4070         # behaviour if the regexp was unable to match anything, since this
4071         # successfully parses the version number of existing supported
4072         # versions that require the converter (MSVC 2010 and 2012).
4073         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
4074         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
4075             cc_default="cl"
4076             cxx_default="cl"
4077         else
4078             die "Unsupported MSVC version (2013 or newer required)"
4079         fi
4080         ld_default="$source_path/compat/windows/mslink"
4081         nm_default="dumpbin -symbols"
4082         ar_default="lib"
4083         case "$arch" in
4084         aarch64|arm64)
4085             as_default="armasm64"
4086             ;;
4087         arm*)
4088             as_default="armasm"
4089             ;;
4090         esac
4091         target_os_default="win32"
4092         # Use a relative path for TMPDIR. This makes sure all the
4093         # ffconf temp files are written with a relative path, avoiding
4094         # issues with msys/win32 path conversion for MSVC parameters
4095         # such as -Fo<file> or -out:<file>.
4096         TMPDIR=.
4097     ;;
4098     icl)
4099         cc_default="icl"
4100         ld_default="xilink"
4101         nm_default="dumpbin -symbols"
4102         ar_default="xilib"
4103         target_os_default="win32"
4104         TMPDIR=.
4105     ;;
4106     gcov)
4107         add_cflags  -fprofile-arcs -ftest-coverage
4108         add_ldflags -fprofile-arcs -ftest-coverage
4109     ;;
4110     llvm-cov)
4111         add_cflags -fprofile-arcs -ftest-coverage
4112         add_ldflags --coverage
4113     ;;
4114     hardened)
4115         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
4116         add_cflags   -fno-strict-overflow -fstack-protector-all
4117         add_ldflags  -Wl,-z,relro -Wl,-z,now
4118         add_cflags   -fPIE
4119         add_ldexeflags -fPIE -pie
4120     ;;
4121     ?*)
4122         die "Unknown toolchain $toolchain"
4123     ;;
4124 esac
4125
4126 if test -n "$cross_prefix"; then
4127     test -n "$arch" && test -n "$target_os" ||
4128         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
4129     enable cross_compile
4130 fi
4131
4132 ar_default="${cross_prefix}${ar_default}"
4133 cc_default="${cross_prefix}${cc_default}"
4134 cxx_default="${cross_prefix}${cxx_default}"
4135 nm_default="${cross_prefix}${nm_default}"
4136 pkg_config_default="${cross_prefix}${pkg_config_default}"
4137 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
4138     ranlib_default="${cross_prefix}${ranlib_default} -D"
4139 else
4140     ranlib_default="${cross_prefix}${ranlib_default}"
4141 fi
4142 strip_default="${cross_prefix}${strip_default}"
4143 windres_default="${cross_prefix}${windres_default}"
4144
4145 sysinclude_default="${sysroot}/usr/include"
4146
4147 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
4148     target_exec target_os x86asmexe nvcc
4149 enabled cross_compile || host_cc_default=$cc
4150 set_default host_cc
4151
4152 pkg_config_fail_message=""
4153 if ! $pkg_config --version >/dev/null 2>&1; then
4154     warn "$pkg_config not found, library detection may fail."
4155     pkg_config=false
4156 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
4157     pkg_config_fail_message="
4158 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
4159 fi
4160
4161 if test $doxygen != $doxygen_default && \
4162   ! $doxygen --version >/dev/null 2>&1; then
4163     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
4164 fi
4165
4166 exesuf() {
4167     case $1 in
4168         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
4169     esac
4170 }
4171
4172 EXESUF=$(exesuf $target_os)
4173 HOSTEXESUF=$(exesuf $host_os)
4174
4175 # set temporary file name
4176 : ${TMPDIR:=$TEMPDIR}
4177 : ${TMPDIR:=$TMP}
4178 : ${TMPDIR:=/tmp}
4179
4180 if [ -n "$tempprefix" ] ; then
4181     mktemp(){
4182         tmpname="$tempprefix.${HOSTNAME}.${UID}"
4183         echo "$tmpname"
4184         mkdir "$tmpname"
4185     }
4186 elif ! test_cmd mktemp -u XXXXXX; then
4187     # simple replacement for missing mktemp
4188     # NOT SAFE FOR GENERAL USE
4189     mktemp(){
4190         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
4191         echo "$tmpname"
4192         mkdir "$tmpname"
4193     }
4194 fi
4195
4196 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
4197     die "Unable to create temporary directory in $TMPDIR."
4198
4199 tmpfile(){
4200     tmp="${FFTMPDIR}/test"$2
4201     (set -C; exec > $tmp) 2> /dev/null ||
4202         die "Unable to create temporary file in $FFTMPDIR."
4203     eval $1=$tmp
4204 }
4205
4206 trap 'rm -rf -- "$FFTMPDIR"' EXIT
4207 trap 'exit 2' INT
4208
4209 tmpfile TMPASM .asm
4210 tmpfile TMPC   .c
4211 tmpfile TMPCPP .cpp
4212 tmpfile TMPE   $EXESUF
4213 tmpfile TMPH   .h
4214 tmpfile TMPM   .m
4215 tmpfile TMPO   .o
4216 tmpfile TMPS   .S
4217 tmpfile TMPSH  .sh
4218 tmpfile TMPV   .ver
4219
4220 unset -f mktemp
4221
4222 chmod +x $TMPE
4223
4224 # make sure we can execute files in $TMPDIR
4225 cat > $TMPSH 2>> $logfile <<EOF
4226 #! /bin/sh
4227 EOF
4228 chmod +x $TMPSH >> $logfile 2>&1
4229 if ! $TMPSH >> $logfile 2>&1; then
4230     cat <<EOF
4231 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
4232 variable to another directory and make sure that it is not mounted noexec.
4233 EOF
4234     die "Sanity test failed."
4235 fi
4236
4237 armasm_flags(){
4238     for flag; do
4239         case $flag in
4240             # Filter out MSVC cl.exe options from cflags that shouldn't
4241             # be passed to gas-preprocessor
4242             -M[TD]*)                                            ;;
4243             *)                  echo $flag                      ;;
4244         esac
4245    done
4246 }
4247
4248 cparser_flags(){
4249     for flag; do
4250         case $flag in
4251             -Wno-switch)             echo -Wno-switch-enum ;;
4252             -Wno-format-zero-length) ;;
4253             -Wdisabled-optimization) ;;
4254             -Wno-pointer-sign)       echo -Wno-other ;;
4255             *)                       echo $flag ;;
4256         esac
4257     done
4258 }
4259
4260 msvc_common_flags(){
4261     for flag; do
4262         case $flag in
4263             # In addition to specifying certain flags under the compiler
4264             # specific filters, they must be specified here as well or else the
4265             # generic catch all at the bottom will print the original flag.
4266             -Wall)                ;;
4267             -Wextra)              ;;
4268             -std=c99)             ;;
4269             # Common flags
4270             -fomit-frame-pointer) ;;
4271             -g)                   echo -Z7 ;;
4272             -fno-math-errno)      ;;
4273             -fno-common)          ;;
4274             -fno-signed-zeros)    ;;
4275             -fPIC)                ;;
4276             -mthumb)              ;;
4277             -march=*)             ;;
4278             -lz)                  echo zlib.lib ;;
4279             -lx264)               echo libx264.lib ;;
4280             -lstdc++)             ;;
4281             -l*)                  echo ${flag#-l}.lib ;;
4282             -LARGEADDRESSAWARE)   echo $flag ;;
4283             -L*)                  echo -libpath:${flag#-L} ;;
4284             *)                    echo $flag ;;
4285         esac
4286     done
4287 }
4288
4289 msvc_flags(){
4290     msvc_common_flags "$@"
4291     for flag; do
4292         case $flag in
4293             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4294                                        -wd4554 ;;
4295             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4296                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4297                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4298                                        -wd4307 \
4299                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4300         esac
4301     done
4302 }
4303
4304 icl_flags(){
4305     msvc_common_flags "$@"
4306     for flag; do
4307         case $flag in
4308             # Despite what Intel's documentation says -Wall, which is supported
4309             # on Windows, does enable remarks so disable them here.
4310             -Wall)                echo $flag -Qdiag-disable:remark ;;
4311             -std=c99)             echo -Qstd=c99 ;;
4312             -flto)                echo -ipo ;;
4313         esac
4314     done
4315 }
4316
4317 icc_flags(){
4318     for flag; do
4319         case $flag in
4320             -flto)                echo -ipo ;;
4321             *)                    echo $flag ;;
4322         esac
4323     done
4324 }
4325
4326 suncc_flags(){
4327     for flag; do
4328         case $flag in
4329             -march=*|-mcpu=*)
4330                 case "${flag#*=}" in
4331                     native)                   echo -xtarget=native       ;;
4332                     v9|niagara)               echo -xarch=sparc          ;;
4333                     ultrasparc)               echo -xarch=sparcvis       ;;
4334                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4335                     i586|pentium)             echo -xchip=pentium        ;;
4336                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4337                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4338                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4339                     pentium4*)          echo -xtarget=pentium4           ;;
4340                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4341                     *-sse3)             echo -xarch=sse3                 ;;
4342                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4343                     bonnell)                   echo -xarch=ssse3         ;;
4344                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4345                     westmere)                  echo -xtarget=westmere    ;;
4346                     silvermont)                echo -xarch=sse4_2        ;;
4347                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4348                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4349                                                echo -xarch=avx           ;;
4350                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4351                     btver1)                    echo -xarch=amdsse4a      ;;
4352                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4353                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4354                     k8|opteron|athlon64|athlon-fx)
4355                                                echo -xarch=sse2a         ;;
4356                     athlon*)                   echo -xarch=pentium_proa  ;;
4357                 esac
4358                 ;;
4359             -std=c99)             echo -xc99              ;;
4360             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4361             -fPIC)                echo -KPIC -xcode=pic32 ;;
4362             -W*,*)                echo $flag              ;;
4363             -f*-*|-W*|-mimpure-text)                      ;;
4364             -shared)              echo -G                 ;;
4365             *)                    echo $flag              ;;
4366         esac
4367     done
4368 }
4369
4370 probe_cc(){
4371     pfx=$1
4372     _cc=$2
4373     first=$3
4374
4375     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4376     unset _ld_o _ldflags _ld_lib _ld_path
4377     unset _depflags _DEPCMD _DEPFLAGS
4378     _flags_filter=echo
4379
4380     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4381         true # no-op to avoid reading stdin in following checks
4382     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4383         _type=llvm_gcc
4384         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4385         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4386         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4387         _cflags_speed='-O3'
4388         _cflags_size='-Os'
4389     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4390         _type=gcc
4391         gcc_version=$($_cc --version | head -n1)
4392         gcc_basever=$($_cc -dumpversion)
4393         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4394         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4395         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4396         case $gcc_basever in
4397             2) ;;
4398             2.*) ;;
4399             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4400         esac
4401         if [ "$first" = true ]; then
4402             case $gcc_basever in
4403                 4.2*)
4404                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4405             esac
4406         fi
4407         _cflags_speed='-O3'
4408         _cflags_size='-Os'
4409     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4410         _type=icc
4411         _ident=$($_cc --version | head -n1)
4412         _depflags='-MMD'
4413         _cflags_speed='-O3'
4414         _cflags_size='-Os'
4415         _cflags_noopt='-O1'
4416         _flags_filter=icc_flags
4417     elif $_cc -v 2>&1 | grep -q xlc; then
4418         _type=xlc
4419         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4420         _cflags_speed='-O5'
4421         _cflags_size='-O5 -qcompact'
4422     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4423         test -d "$sysroot" || die "No valid sysroot specified."
4424         _type=armcc
4425         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4426         armcc_conf="$PWD/armcc.conf"
4427         $_cc --arm_linux_configure                 \
4428              --arm_linux_config_file="$armcc_conf" \
4429              --configure_sysroot="$sysroot"        \
4430              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4431              die "Error creating armcc configuration file."
4432         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4433         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4434         as_default="${cross_prefix}gcc"
4435         _depflags='-MMD'
4436         _cflags_speed='-O3'
4437         _cflags_size='-Os'
4438     elif $_cc -v 2>&1 | grep -q clang && ! $_cc -? > /dev/null 2>&1; then
4439         _type=clang
4440         _ident=$($_cc --version 2>/dev/null | head -n1)
4441         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4442         _cflags_speed='-O3'
4443         _cflags_size='-Oz'
4444     elif $_cc -V 2>&1 | grep -q Sun; then
4445         _type=suncc
4446         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4447         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4448         _DEPFLAGS='-xM1 -xc99'
4449         _ldflags='-std=c99'
4450         _cflags_speed='-O5'
4451         _cflags_size='-O5 -xspace'
4452         _flags_filter=suncc_flags
4453     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4454         _type=pathscale
4455         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4456         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4457         _cflags_speed='-O2'
4458         _cflags_size='-Os'
4459         _flags_filter='filter_out -Wdisabled-optimization'
4460     elif $_cc -v 2>&1 | grep -q Open64; then
4461         _type=open64
4462         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4463         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4464         _cflags_speed='-O2'
4465         _cflags_size='-Os'
4466         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4467     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4468         _type=armasm
4469         _ident=$($_cc | head -n1)
4470         # 4509: "This form of conditional instruction is deprecated"
4471         _flags="-nologo -ignore 4509"
4472         _flags_filter=armasm_flags
4473     elif $_cc 2>&1 | grep -q Intel; then
4474         _type=icl
4475         _ident=$($_cc 2>&1 | head -n1)
4476         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4477         # Not only is O3 broken on 13.x+ but it is slower on all previous
4478         # versions (tested) as well.
4479         _cflags_speed="-O2"
4480         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4481         if $_cc 2>&1 | grep -q Linker; then
4482             _ld_o='-out:$@'
4483         else
4484             _ld_o='-Fe$@'
4485         fi
4486         _cc_o='-Fo$@'
4487         _cc_e='-P'
4488         _flags_filter=icl_flags
4489         _ld_lib='lib%.a'
4490         _ld_path='-libpath:'
4491         # -Qdiag-error to make icl error when seeing certain unknown arguments
4492         _flags='-nologo -Qdiag-error:4044,10157'
4493         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4494         # with MSVC which enables it by default.
4495         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4496         disable stripping
4497     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4498         # lld can emulate multiple different linkers; in ms link.exe mode,
4499         # the -? parameter gives the help output which contains an identifyable
4500         # string, while it gives an error in other modes.
4501         _type=lld-link
4502         # The link.exe mode doesn't have a switch for getting the version,
4503         # but we can force it back to gnu mode and get the version from there.
4504         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4505         _ld_o='-out:$@'
4506         _flags_filter=msvc_flags
4507         _ld_lib='lib%.a'
4508         _ld_path='-libpath:'
4509     elif $_cc -nologo- 2>&1 | grep -q Microsoft || { $_cc -v 2>&1 | grep -q clang && $_cc -? > /dev/null 2>&1; }; then
4510         _type=msvc
4511         _ident=$($_cc 2>&1 | head -n1 | tr -d '\r')
4512         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4513         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4514         _cflags_speed="-O2"
4515         _cflags_size="-O1"
4516         _cflags_noopt="-O1"
4517         if $_cc -nologo- 2>&1 | grep -q Linker; then
4518             _ld_o='-out:$@'
4519         else
4520             _ld_o='-Fe$@'
4521         fi
4522         _cc_o='-Fo$@'
4523         _cc_e='-P -Fi$@'
4524         _flags_filter=msvc_flags
4525         _ld_lib='lib%.a'
4526         _ld_path='-libpath:'
4527         _flags='-nologo'
4528         disable stripping
4529     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4530         _type=cparser
4531         _ident=$($_cc --version | head -n1)
4532         _depflags='-MMD'
4533         _cflags_speed='-O4'
4534         _cflags_size='-O2'
4535         _flags_filter=cparser_flags
4536     fi
4537
4538     eval ${pfx}_type=\$_type
4539     eval ${pfx}_ident=\$_ident
4540 }
4541
4542 set_ccvars(){
4543     eval ${1}_C=\${_cc_c-\${${1}_C}}
4544     eval ${1}_E=\${_cc_e-\${${1}_E}}
4545     eval ${1}_O=\${_cc_o-\${${1}_O}}
4546
4547     if [ -n "$_depflags" ]; then
4548         eval ${1}_DEPFLAGS=\$_depflags
4549     else
4550         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4551         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4552         eval DEP${1}FLAGS=\$_flags
4553     fi
4554 }
4555
4556 probe_cc cc "$cc" "true"
4557 cflags_filter=$_flags_filter
4558 cflags_speed=$_cflags_speed
4559 cflags_size=$_cflags_size
4560 cflags_noopt=$_cflags_noopt
4561 add_cflags $_flags $_cflags
4562 cc_ldflags=$_ldflags
4563 set_ccvars CC
4564 set_ccvars CXX
4565
4566 probe_cc hostcc "$host_cc"
4567 host_cflags_filter=$_flags_filter
4568 host_cflags_speed=$_cflags_speed
4569 add_host_cflags  $_flags $_cflags
4570 set_ccvars HOSTCC
4571
4572 test -n "$cc_type" && enable $cc_type ||
4573     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4574
4575 : ${as_default:=$cc}
4576 : ${objcc_default:=$cc}
4577 : ${dep_cc_default:=$cc}
4578 : ${ld_default:=$cc}
4579 : ${host_ld_default:=$host_cc}
4580 set_default ar as objcc dep_cc ld ln_s host_ld windres
4581
4582 probe_cc as "$as"
4583 asflags_filter=$_flags_filter
4584 add_asflags $_flags $_cflags
4585 set_ccvars AS
4586
4587 probe_cc objcc "$objcc"
4588 objcflags_filter=$_flags_filter
4589 add_objcflags $_flags $_cflags
4590 set_ccvars OBJC
4591
4592 probe_cc ld "$ld"
4593 ldflags_filter=$_flags_filter
4594 add_ldflags $_flags $_ldflags
4595 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4596 LD_O=${_ld_o-$LD_O}
4597 LD_LIB=${_ld_lib-$LD_LIB}
4598 LD_PATH=${_ld_path-$LD_PATH}
4599
4600 probe_cc hostld "$host_ld"
4601 host_ldflags_filter=$_flags_filter
4602 add_host_ldflags $_flags $_ldflags
4603 HOSTLD_O=${_ld_o-$HOSTLD_O}
4604
4605 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4606     probe_cc depcc "$dep_cc"
4607     CCDEP=${_DEPCMD:-$DEPCMD}
4608     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4609     DEPCCFLAGS=$_flags
4610 fi
4611
4612 if $ar 2>&1 | grep -q Microsoft; then
4613     arflags="-nologo"
4614     ar_o='-out:$@'
4615 elif $ar 2>&1 | grep -q "\[D\] "; then
4616     arflags="rcD"
4617     ar_o='$@'
4618 else
4619     arflags="rc"
4620     ar_o='$@'
4621 fi
4622
4623 add_cflags $extra_cflags
4624 add_cxxflags $extra_cxxflags
4625 add_objcflags $extra_objcflags
4626 add_asflags $extra_cflags
4627
4628 if test -n "$sysroot"; then
4629     case "$cc_type" in
4630         gcc|llvm_gcc|clang)
4631             add_cppflags --sysroot="$sysroot"
4632             add_ldflags --sysroot="$sysroot"
4633         ;;
4634     esac
4635 fi
4636
4637 if test "$cpu" = host; then
4638     enabled cross_compile &&
4639         die "--cpu=host makes no sense when cross-compiling."
4640
4641     case "$cc_type" in
4642         gcc|llvm_gcc)
4643             check_native(){
4644                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4645                 sed -n "/cc1.*$1=/{
4646                             s/.*$1=\\([^ ]*\\).*/\\1/
4647                             p
4648                             q
4649                         }" $TMPE
4650             }
4651             cpu=$(check_native -march || check_native -mcpu)
4652         ;;
4653         clang)
4654             check_native(){
4655                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4656                 sed -n "/cc1.*-target-cpu /{
4657                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4658                             p
4659                             q
4660                         }" $TMPE
4661             }
4662             cpu=$(check_native -march)
4663         ;;
4664     esac
4665
4666     test "${cpu:-host}" = host &&
4667         die "--cpu=host not supported with compiler $cc"
4668 fi
4669
4670 # Deal with common $arch aliases
4671 case "$arch" in
4672     aarch64|arm64)
4673         arch="aarch64"
4674     ;;
4675     arm*|iPad*|iPhone*)
4676         arch="arm"
4677     ;;
4678     mips*|IP*)
4679         case "$arch" in
4680         *el)
4681             add_cppflags -EL
4682             add_ldflags -EL
4683         ;;
4684         *eb)
4685             add_cppflags -EB
4686             add_ldflags -EB
4687         ;;
4688         esac
4689         arch="mips"
4690     ;;
4691     parisc*|hppa*)
4692         arch="parisc"
4693     ;;
4694     "Power Macintosh"|ppc*|powerpc*)
4695         arch="ppc"
4696     ;;
4697     s390|s390x)
4698         arch="s390"
4699     ;;
4700     sh4|sh)
4701         arch="sh4"
4702     ;;
4703     sun4*|sparc*)
4704         arch="sparc"
4705     ;;
4706     tilegx|tile-gx)
4707         arch="tilegx"
4708     ;;
4709     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4710         arch="x86"
4711     ;;
4712 esac
4713
4714 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4715 enable $arch
4716
4717 # Add processor-specific flags
4718 if enabled aarch64; then
4719
4720     case $cpu in
4721         armv*)
4722             cpuflags="-march=$cpu"
4723         ;;
4724         *)
4725             cpuflags="-mcpu=$cpu"
4726         ;;
4727     esac
4728
4729 elif enabled alpha; then
4730
4731     cpuflags="-mcpu=$cpu"
4732
4733 elif enabled arm; then
4734
4735     check_arm_arch() {
4736         test_cpp_condition stddef.h \
4737             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4738             $cpuflags
4739     }
4740
4741     probe_arm_arch() {
4742         if   check_arm_arch 4;        then echo armv4
4743         elif check_arm_arch 4T;       then echo armv4t
4744         elif check_arm_arch 5;        then echo armv5
4745         elif check_arm_arch 5E;       then echo armv5e
4746         elif check_arm_arch 5T;       then echo armv5t
4747         elif check_arm_arch 5TE;      then echo armv5te
4748         elif check_arm_arch 5TEJ;     then echo armv5te
4749         elif check_arm_arch 6;        then echo armv6
4750         elif check_arm_arch 6J;       then echo armv6j
4751         elif check_arm_arch 6K;       then echo armv6k
4752         elif check_arm_arch 6Z;       then echo armv6z
4753         elif check_arm_arch 6KZ;      then echo armv6zk
4754         elif check_arm_arch 6ZK;      then echo armv6zk
4755         elif check_arm_arch 6T2;      then echo armv6t2
4756         elif check_arm_arch 7;        then echo armv7
4757         elif check_arm_arch 7A  7_A;  then echo armv7-a
4758         elif check_arm_arch 7S;       then echo armv7-a
4759         elif check_arm_arch 7R  7_R;  then echo armv7-r
4760         elif check_arm_arch 7M  7_M;  then echo armv7-m
4761         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4762         elif check_arm_arch 8A  8_A;  then echo armv8-a
4763         fi
4764     }
4765
4766     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4767
4768     case $cpu in
4769         armv*)
4770             cpuflags="-march=$cpu"
4771             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4772         ;;
4773         *)
4774             cpuflags="-mcpu=$cpu"
4775             case $cpu in
4776                 cortex-a*)                               subarch=armv7a  ;;
4777                 cortex-r*)                               subarch=armv7r  ;;
4778                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4779                 arm11*)                                  subarch=armv6   ;;
4780                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4781                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4782                 *)                             subarch=$(probe_arm_arch) ;;
4783             esac
4784         ;;
4785     esac
4786
4787     case "$subarch" in
4788         armv5t*)    enable fast_clz                ;;
4789         armv[6-8]*)
4790             enable fast_clz
4791             disabled fast_unaligned || enable fast_unaligned
4792             ;;
4793     esac
4794
4795 elif enabled avr32; then
4796
4797     case $cpu in
4798         ap7[02]0[0-2])
4799             subarch="avr32_ap"
4800             cpuflags="-mpart=$cpu"
4801         ;;
4802         ap)
4803             subarch="avr32_ap"
4804             cpuflags="-march=$cpu"
4805         ;;
4806         uc3[ab]*)
4807             subarch="avr32_uc"
4808             cpuflags="-mcpu=$cpu"
4809         ;;
4810         uc)
4811             subarch="avr32_uc"
4812             cpuflags="-march=$cpu"
4813         ;;
4814     esac
4815
4816 elif enabled bfin; then
4817
4818     cpuflags="-mcpu=$cpu"
4819
4820 elif enabled mips; then
4821
4822     cpuflags="-march=$cpu"
4823
4824     if [ "$cpu" != "generic" ]; then
4825         disable mips32r2
4826         disable mips32r5
4827         disable mips64r2
4828         disable mips32r6
4829         disable mips64r6
4830         disable loongson2
4831         disable loongson3
4832
4833         case $cpu in
4834             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4835                 enable mips32r2
4836                 disable msa
4837             ;;
4838             p5600|i6400|p6600)
4839                 disable mipsdsp
4840                 disable mipsdspr2
4841             ;;
4842             loongson*)
4843                 enable loongson2
4844                 enable loongson3
4845                 enable local_aligned
4846                 enable simd_align_16
4847                 enable fast_64bit
4848                 enable fast_clz
4849                 enable fast_cmov
4850                 enable fast_unaligned
4851                 disable aligned_stack
4852                 disable mipsdsp
4853                 disable mipsdspr2
4854                 # When gcc version less than 5.3.0, add -fno-expensive-optimizations flag.
4855                 if [ $cc == gcc ]; then
4856                     gcc_version=$(gcc -dumpversion)
4857                     if [ "$(echo "$gcc_version 5.3.0" | tr " " "\n" | sort -rV | head -n 1)" == "$gcc_version" ]; then
4858                         expensive_optimization_flag=""
4859                     else
4860                         expensive_optimization_flag="-fno-expensive-optimizations"
4861                     fi
4862                 fi
4863                 case $cpu in
4864                     loongson3*)
4865                         cpuflags="-march=loongson3a -mhard-float $expensive_optimization_flag"
4866                     ;;
4867                     loongson2e)
4868                         cpuflags="-march=loongson2e -mhard-float $expensive_optimization_flag"
4869                     ;;
4870                     loongson2f)
4871                         cpuflags="-march=loongson2f -mhard-float $expensive_optimization_flag"
4872                     ;;
4873                 esac
4874             ;;
4875             *)
4876                 # Unknown CPU. Disable everything.
4877                 warn "unknown CPU. Disabling all MIPS optimizations."
4878                 disable mipsfpu
4879                 disable mipsdsp
4880                 disable mipsdspr2
4881                 disable msa
4882                 disable mmi
4883             ;;
4884         esac
4885
4886         case $cpu in
4887             24kc)
4888                 disable mipsfpu
4889                 disable mipsdsp
4890                 disable mipsdspr2
4891             ;;
4892             24kf*)
4893                 disable mipsdsp
4894                 disable mipsdspr2
4895             ;;
4896             24kec|34kc|1004kc)
4897                 disable mipsfpu
4898                 disable mipsdspr2
4899             ;;
4900             24kef*|34kf*|1004kf*)
4901                 disable mipsdspr2
4902             ;;
4903             74kc)
4904                 disable mipsfpu
4905             ;;
4906             p5600)
4907                 enable mips32r5
4908                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4909             ;;
4910             i6400)
4911                 enable mips64r6
4912                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4913             ;;
4914             p6600)
4915                 enable mips64r6
4916                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4917             ;;
4918         esac
4919     else
4920         # We do not disable anything. Is up to the user to disable the unwanted features.
4921         warn 'generic cpu selected'
4922     fi
4923
4924 elif enabled ppc; then
4925
4926     disable ldbrx
4927
4928     case $(tolower $cpu) in
4929         601|ppc601|powerpc601)
4930             cpuflags="-mcpu=601"
4931             disable altivec
4932         ;;
4933         603*|ppc603*|powerpc603*)
4934             cpuflags="-mcpu=603"
4935             disable altivec
4936         ;;
4937         604*|ppc604*|powerpc604*)
4938             cpuflags="-mcpu=604"
4939             disable altivec
4940         ;;
4941         g3|75*|ppc75*|powerpc75*)
4942             cpuflags="-mcpu=750"
4943             disable altivec
4944         ;;
4945         g4|745*|ppc745*|powerpc745*)
4946             cpuflags="-mcpu=7450"
4947             disable vsx
4948         ;;
4949         74*|ppc74*|powerpc74*)
4950             cpuflags="-mcpu=7400"
4951             disable vsx
4952         ;;
4953         g5|970|ppc970|powerpc970)
4954             cpuflags="-mcpu=970"
4955             disable vsx
4956         ;;
4957         power[3-6]*)
4958             cpuflags="-mcpu=$cpu"
4959             disable vsx
4960         ;;
4961         power[7-8]*)
4962             cpuflags="-mcpu=$cpu"
4963         ;;
4964         cell)
4965             cpuflags="-mcpu=cell"
4966             enable ldbrx
4967             disable vsx
4968         ;;
4969         e500mc)
4970             cpuflags="-mcpu=e500mc"
4971             disable altivec
4972         ;;
4973         e500v2)
4974             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4975             disable altivec
4976             disable dcbzl
4977         ;;
4978         e500)
4979             cpuflags="-mcpu=8540 -mhard-float"
4980             disable altivec
4981             disable dcbzl
4982         ;;
4983     esac
4984
4985 elif enabled sparc; then
4986
4987     case $cpu in
4988         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4989             cpuflags="-mcpu=$cpu"
4990         ;;
4991         ultrasparc*|niagara[234])
4992             cpuflags="-mcpu=$cpu"
4993         ;;
4994     esac
4995
4996 elif enabled x86; then
4997
4998     case $cpu in
4999         i[345]86|pentium)
5000             cpuflags="-march=$cpu"
5001             disable i686
5002             disable mmx
5003         ;;
5004         # targets that do NOT support nopl and conditional mov (cmov)
5005         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
5006             cpuflags="-march=$cpu"
5007             disable i686
5008         ;;
5009         # targets that do support nopl and conditional mov (cmov)
5010         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
5011         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
5012         |amdfam10|barcelona|b[dt]ver*|znver*)
5013             cpuflags="-march=$cpu"
5014             enable i686
5015             enable fast_cmov
5016         ;;
5017         # targets that do support conditional mov but on which it's slow
5018         pentium4|pentium4m|prescott|nocona)
5019             cpuflags="-march=$cpu"
5020             enable i686
5021             disable fast_cmov
5022         ;;
5023     esac
5024
5025 fi
5026
5027 if [ "$cpu" != generic ]; then
5028     add_cflags  $cpuflags
5029     add_asflags $cpuflags
5030     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
5031 fi
5032
5033 # compiler sanity check
5034 test_exec <<EOF
5035 int main(void){ return 0; }
5036 EOF
5037 if test "$?" != 0; then
5038     echo "$cc is unable to create an executable file."
5039     if test -z "$cross_prefix" && ! enabled cross_compile ; then
5040         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
5041         echo "Only do this if you know what cross compiling means."
5042     fi
5043     die "C compiler test failed."
5044 fi
5045
5046 add_cppflags -D_ISOC99_SOURCE
5047 add_cxxflags -D__STDC_CONSTANT_MACROS
5048 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
5049
5050 # some compilers silently accept -std=c11, so we also need to check that the
5051 # version macro is defined properly
5052 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
5053     add_cflags -std=c11 ||
5054     check_cflags -std=c99
5055
5056 check_cppflags -D_FILE_OFFSET_BITS=64
5057 check_cppflags -D_LARGEFILE_SOURCE
5058
5059 add_host_cppflags -D_ISOC99_SOURCE
5060 check_host_cflags -std=c99
5061 check_host_cflags -Wall
5062 check_host_cflags $host_cflags_speed
5063
5064 check_64bit(){
5065     arch32=$1
5066     arch64=$2
5067     expr=${3:-'sizeof(void *) > 4'}
5068     test_code cc "" "int test[2*($expr) - 1]" &&
5069         subarch=$arch64 || subarch=$arch32
5070     enable $subarch
5071 }
5072
5073 case "$arch" in
5074     aarch64|alpha|ia64)
5075         enabled shared && enable_weak pic
5076     ;;
5077     mips)
5078         check_64bit mips mips64 '_MIPS_SIM > 1'
5079         enabled shared && enable_weak pic
5080     ;;
5081     parisc)
5082         check_64bit parisc parisc64
5083         enabled shared && enable_weak pic
5084     ;;
5085     ppc)
5086         check_64bit ppc ppc64
5087         enabled shared && enable_weak pic
5088     ;;
5089     s390)
5090         check_64bit s390 s390x
5091         enabled shared && enable_weak pic
5092     ;;
5093     sparc)
5094         check_64bit sparc sparc64
5095         enabled shared && enable_weak pic
5096     ;;
5097     x86)
5098         check_64bit x86_32 x86_64
5099         # Treat x32 as x64 for now. Note it also needs pic if shared
5100         test "$subarch" = "x86_32" && test_cpp_condition stddef.h 'defined(__x86_64__)' &&
5101             subarch=x86_64 && enable x86_64 && disable x86_32
5102         if enabled x86_64; then
5103             enabled shared && enable_weak pic
5104             objformat=elf64
5105         fi
5106     ;;
5107 esac
5108
5109 # OS specific
5110 case $target_os in
5111     aix)
5112         SHFLAGS=-shared
5113         add_cppflags '-I\$(SRC_PATH)/compat/aix'
5114         enabled shared && add_ldflags -Wl,-brtl
5115         arflags='-Xany -r -c'
5116         striptype=""
5117         ;;
5118     android)
5119         disable symver
5120         enable section_data_rel_ro
5121         add_cflags -fPIE
5122         add_ldexeflags -fPIE -pie
5123         SLIB_INSTALL_NAME='$(SLIBNAME)'
5124         SLIB_INSTALL_LINKS=
5125         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
5126         ;;
5127     haiku)
5128         prefix_default="/boot/common"
5129         network_extralibs="-lnetwork"
5130         host_extralibs=
5131         ;;
5132     sunos)
5133         SHFLAGS='-shared -Wl,-h,$$(@F)'
5134         enabled x86 && append SHFLAGS -mimpure-text
5135         network_extralibs="-lsocket -lnsl"
5136         add_cppflags -D__EXTENSIONS__
5137         # When using suncc to build, the Solaris linker will mark
5138         # an executable with each instruction set encountered by
5139         # the Solaris assembler.  As our libraries contain their own
5140         # guards for processor-specific code, instead suppress
5141         # generation of the HWCAPS ELF section on Solaris x86 only.
5142         enabled_all suncc x86 &&
5143             echo "hwcap_1 = OVERRIDE;" > mapfile &&
5144             add_ldflags -Wl,-M,mapfile
5145         nm_default='nm -P -g'
5146         striptype=""
5147         version_script='-M'
5148         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
5149         ;;
5150     netbsd)
5151         disable symver
5152         oss_indev_extralibs="-lossaudio"
5153         oss_outdev_extralibs="-lossaudio"
5154         enabled gcc || check_ldflags -Wl,-zmuldefs
5155         ;;
5156     openbsd|bitrig)
5157         disable symver
5158         striptype=""
5159         SHFLAGS='-shared'
5160         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
5161         SLIB_INSTALL_LINKS=
5162         oss_indev_extralibs="-lossaudio"
5163         oss_outdev_extralibs="-lossaudio"
5164         ;;
5165     dragonfly)
5166         disable symver
5167         ;;
5168     freebsd)
5169         ;;
5170     bsd/os)
5171         add_extralibs -lpoll -lgnugetopt
5172         strip="strip -d"
5173         ;;
5174     darwin)
5175         enabled ppc && add_asflags -force_cpusubtype_ALL
5176         install_name_dir_default='$(SHLIBDIR)'
5177         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
5178         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
5179         strip="${strip} -x"
5180         add_ldflags -Wl,-dynamic,-search_paths_first
5181         check_cflags -Werror=partial-availability
5182         SLIBSUF=".dylib"
5183         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
5184         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
5185         enabled x86_64 && objformat="macho64" || objformat="macho32"
5186         enabled_any pic shared x86_64 ||
5187             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
5188         check_headers dispatch/dispatch.h &&
5189             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
5190         if test -n "$sysroot"; then
5191             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
5192             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
5193         fi
5194         version_script='-exported_symbols_list'
5195         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
5196         ;;
5197     msys*)
5198         die "Native MSYS builds are discouraged, please use the MINGW environment."
5199         ;;
5200     mingw32*|mingw64*)
5201         target_os=mingw32
5202         LIBTARGET=i386
5203         if enabled x86_64; then
5204             LIBTARGET="i386:x86-64"
5205         elif enabled arm; then
5206             LIBTARGET="arm"
5207         elif enabled aarch64; then
5208             LIBTARGET="arm64"
5209         fi
5210         if enabled shared; then
5211             # Cannot build both shared and static libs when using dllimport.
5212             disable static
5213         fi
5214         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5215         enabled x86_32 && check_ldflags -Wl,--large-address-aware
5216         shlibdir_default="$bindir_default"
5217         SLIBPREF=""
5218         SLIBSUF=".dll"
5219         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5220         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5221         if test_cmd lib.exe -list; then
5222             SLIB_EXTRA_CMD=-'lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5223             if enabled x86_64; then
5224                 LIBTARGET=x64
5225             fi
5226         else
5227             SLIB_EXTRA_CMD=-'$(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
5228         fi
5229         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5230         SLIB_INSTALL_LINKS=
5231         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5232         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5233         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5234         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--disable-auto-image-base $$(@:$(SLIBSUF)=.def)'
5235         enabled x86_64 && objformat="win64" || objformat="win32"
5236         dlltool="${cross_prefix}dlltool"
5237         ranlib=:
5238         enable dos_paths
5239         check_ldflags -Wl,--nxcompat,--dynamicbase
5240         # Lets work around some stupidity in binutils.
5241         # ld will strip relocations from executables even though we need them
5242         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
5243         # however ld then forgets what the entry point should be (oops) so we
5244         # have to manually (re)set it.
5245         if enabled x86_32; then
5246             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
5247         elif enabled x86_64; then
5248             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
5249             check_ldflags -Wl,--high-entropy-va # binutils 2.25
5250             # Set image base >4GB for extra entropy with HEASLR
5251             add_ldexeflags -Wl,--image-base,0x140000000
5252             append SHFLAGS -Wl,--image-base,0x180000000
5253         fi
5254         ;;
5255     win32|win64)
5256         disable symver
5257         if enabled shared; then
5258             # Link to the import library instead of the normal static library
5259             # for shared libs.
5260             LD_LIB='%.lib'
5261             # Cannot build both shared and static libs with MSVC or icl.
5262             disable static
5263         fi
5264         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
5265         shlibdir_default="$bindir_default"
5266         SLIBPREF=""
5267         SLIBSUF=".dll"
5268         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5269         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5270         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5271         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5272         SLIB_INSTALL_LINKS=
5273         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5274         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5275         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5276         enabled x86_64 && objformat="win64" || objformat="win32"
5277         ranlib=:
5278         enable dos_paths
5279         ;;
5280     cygwin*)
5281         target_os=cygwin
5282         shlibdir_default="$bindir_default"
5283         SLIBPREF="cyg"
5284         SLIBSUF=".dll"
5285         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5286         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5287         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5288         SLIB_INSTALL_LINKS=
5289         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5290         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5291         enabled x86_64 && objformat="win64" || objformat="win32"
5292         enable dos_paths
5293         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5294         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5295         ;;
5296     *-dos|freedos|opendos)
5297         network_extralibs="-lsocket"
5298         objformat="coff"
5299         enable dos_paths
5300         ;;
5301     linux)
5302         enable section_data_rel_ro
5303         enabled_any arm aarch64 && enable_weak linux_perf
5304         ;;
5305     irix*)
5306         target_os=irix
5307         ranlib="echo ignoring ranlib"
5308         ;;
5309     os/2*)
5310         strip="lxlite -CS"
5311         striptype=""
5312         objformat="aout"
5313         add_cppflags -D_GNU_SOURCE
5314         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5315         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5316         LIBSUF="_s.a"
5317         SLIBPREF=""
5318         SLIBSUF=".dll"
5319         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5320         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5321         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5322             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5323             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5324             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5325             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5326         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5327             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5328         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5329         SLIB_INSTALL_LINKS=
5330         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5331         enable dos_paths
5332         enable_weak os2threads
5333         ;;
5334     gnu/kfreebsd)
5335         add_cppflags -D_BSD_SOURCE
5336         ;;
5337     gnu)
5338         ;;
5339     qnx)
5340         add_cppflags -D_QNX_SOURCE
5341         network_extralibs="-lsocket"
5342         ;;
5343     symbian)
5344         SLIBSUF=".dll"
5345         enable dos_paths
5346         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5347         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5348         add_ldflags -Wl,--target1-abs,--no-undefined \
5349                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5350                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5351         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5352                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5353                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5354         ;;
5355     minix)
5356         ;;
5357     none)
5358         ;;
5359     *)
5360         die "Unknown OS '$target_os'."
5361         ;;
5362 esac
5363
5364 # test if creating links works
5365 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5366 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5367 mkdir "$link_dest"
5368 $ln_s "$link_dest" "$link_name"
5369 touch "$link_dest/test_file"
5370 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5371     # create link to source path
5372     [ -e src ] && rm src
5373     $ln_s "$source_path" src
5374     source_link=src
5375 else
5376     # creating directory links doesn't work
5377     # fall back to using the full source path
5378     source_link="$source_path"
5379 fi
5380 # cleanup
5381 rm -r "$link_dest"
5382 rm -r "$link_name"
5383
5384 # determine libc flavour
5385
5386 probe_libc(){
5387     pfx=$1
5388     pfx_no_=${pfx%_}
5389     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5390     if test_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5391         eval ${pfx}libc_type=uclibc
5392         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5393     elif test_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5394         eval ${pfx}libc_type=glibc
5395         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5396     # MinGW headers can be installed on Cygwin, so check for newlib first.
5397     elif test_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5398         eval ${pfx}libc_type=newlib
5399         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5400     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5401     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5402         eval ${pfx}libc_type=mingw64
5403         if test_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5404             add_compat msvcrt/snprintf.o
5405             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5406         fi
5407         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5408         eval test \$${pfx_no_}cc_type = "gcc" &&
5409             add_${pfx}cppflags -D__printf__=__gnu_printf__
5410         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5411             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5412     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5413          test_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5414         eval ${pfx}libc_type=mingw32
5415         test_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5416             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5417             die "ERROR: MinGW32 runtime version must be >= 3.15."
5418         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5419         test_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5420             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5421         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5422             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5423         eval test \$${pfx_no_}cc_type = "gcc" &&
5424             add_${pfx}cppflags -D__printf__=__gnu_printf__
5425     elif test_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5426         eval ${pfx}libc_type=msvcrt
5427         if test_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5428             if [ "$pfx" = host_ ]; then
5429                 add_host_cppflags -Dsnprintf=_snprintf
5430             else
5431                 add_compat strtod.o strtod=avpriv_strtod
5432                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5433                                              _snprintf=avpriv_snprintf  \
5434                                              vsnprintf=avpriv_vsnprintf
5435             fi
5436         fi
5437         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5438         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5439         # 0x601 by default unless something else is set by the user.
5440         # This can easily lead to us detecting functions only present
5441         # in such new versions and producing binaries requiring windows 7.0.
5442         # Therefore explicitly set the default to Vista unless the user has
5443         # set something else on the command line.
5444         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5445         # family. For these cases, configure is free to use any functions
5446         # found in the SDK headers by default. (Alternatively, we could force
5447         # _WIN32_WINNT to 0x0602 in that case.)
5448         test_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5449             { test_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0600; }
5450 #ifdef WINAPI_FAMILY
5451 #include <winapifamily.h>
5452 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5453 #error not desktop
5454 #endif
5455 #endif
5456 EOF
5457         if [ "$pfx" = "" ]; then
5458             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5459             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5460         fi
5461     elif test_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5462         eval ${pfx}libc_type=klibc
5463     elif test_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5464         eval ${pfx}libc_type=bionic
5465     elif test_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5466         eval ${pfx}libc_type=solaris
5467         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5468     elif test_${pfx}cpp_condition sys/version.h "defined __DJGPP__"; then
5469         eval ${pfx}libc_type=djgpp
5470         add_cppflags -U__STRICT_ANSI__
5471         add_cflags "-include $source_path/compat/djgpp/math.h"
5472         add_compat djgpp/math.o
5473     fi
5474     test_${pfx}cc <<EOF
5475 #include <time.h>
5476 void *v = localtime_r;
5477 EOF
5478 test "$?" != 0 && test_${pfx}cc -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 <<EOF && add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5479 #include <time.h>
5480 void *v = localtime_r;
5481 EOF
5482
5483     eval test -n "\${${pfx}libc_type}" && enable ${pfx}libc_${libc_type}
5484 }
5485
5486 probe_libc
5487 probe_libc host_
5488
5489 # hacks for compiler/libc/os combinations
5490
5491 case $libc_type in
5492     bionic)
5493         add_compat strtod.o strtod=avpriv_strtod
5494         ;;
5495 esac
5496
5497 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5498     add_cppflags '-I\$(SRC_PATH)/compat/float'
5499
5500 test_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5501
5502 set_default libdir
5503 : ${shlibdir_default:="$libdir"}
5504 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5505
5506 set_default $PATHS_LIST
5507 set_default nm
5508
5509 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5510
5511 enable_weak_pic() {
5512     disabled pic && return
5513     enable pic
5514     add_cppflags -DPIC
5515     case "$target_os" in
5516     mingw*|cygwin*|win*)
5517         ;;
5518     *)
5519         add_cflags -fPIC
5520         add_asflags -fPIC
5521         ;;
5522     esac
5523 }
5524
5525 enabled pic && enable_weak_pic
5526
5527 test_cc <<EOF || die "Symbol mangling check failed."
5528 int ff_extern;
5529 EOF
5530 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5531 extern_prefix=${sym%%ff_extern*}
5532
5533 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
5534
5535 for restrict_keyword in restrict __restrict__ __restrict ""; do
5536     test_code cc "" "char * $restrict_keyword p" && break
5537 done
5538
5539 check_cc pragma_deprecated "" '_Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"")'
5540
5541 # The global variable ensures the bits appear unchanged in the object file.
5542 test_cc <<EOF || die "endian test failed"
5543 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5544 EOF
5545 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5546
5547 check_cc const_nan math.h "struct { double d; } static const bar[] = { { NAN } }"
5548
5549 if ! enabled ppc64 || enabled bigendian; then
5550     disable vsx
5551 fi
5552
5553 check_gas() {
5554     log "check_gas using '$as' as AS"
5555     # :vararg is used on aarch64, arm and ppc altivec
5556     check_as vararg "
5557 .macro m n, y:vararg=0
5558 \n: .int \y
5559 .endm
5560 m x" || return 1
5561     # .altmacro is only used in arm asm
5562     ! enabled arm || check_as gnu_as ".altmacro"
5563 }
5564
5565 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5566     nogas=:
5567     enabled_any arm aarch64 && nogas=die
5568     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5569     as_noop=-v
5570
5571     case $as_type in
5572         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5573         gcc)  gaspp_as_type=gas ;;
5574         *)    gaspp_as_type=$as_type ;;
5575     esac
5576
5577     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5578
5579     test "${as#*gas-preprocessor.pl}" != "$as" ||
5580     test_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5581         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5582
5583     if ! check_gas ; then
5584         as=${gas:=$as}
5585         check_gas || \
5586             $nogas "GNU assembler not found, install/update gas-preprocessor"
5587     fi
5588
5589     check_as as_func ".func test
5590                       .endfunc"
5591 fi
5592
5593 check_inline_asm inline_asm_labels '"1:\n"'
5594
5595 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5596
5597 if enabled aarch64; then
5598     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5599     # internal assembler in clang 3.3 does not support this instruction
5600     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5601     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5602
5603     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5604
5605 elif enabled alpha; then
5606
5607     check_cflags -mieee
5608
5609 elif enabled arm; then
5610
5611     enabled msvc && check_cpp_condition thumb stddef.h "defined _M_ARMT"
5612     test_cpp_condition stddef.h "defined __thumb__" && test_cc <<EOF && enable_weak thumb
5613 float func(float a, float b){ return a+b; }
5614 EOF
5615     enabled thumb && check_cflags -mthumb || check_cflags -marm
5616
5617     if check_cpp_condition vfp_args stddef.h "defined __ARM_PCS_VFP"; then
5618         :
5619     elif check_cpp_condition vfp_args stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5620         :
5621     elif ! test_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5622         case "${cross_prefix:-$cc}" in
5623             *hardfloat*) enable vfp_args; fpabi=vfp ;;
5624             *) check_ld "cc" vfp_args <<EOF && fpabi=vfp || fpabi=soft ;;
5625 __asm__ (".eabi_attribute 28, 1");
5626 int main(void) { return 0; }
5627 EOF
5628         esac
5629         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5630     fi
5631
5632     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5633     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5634     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5635     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5636     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5637     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5638     enabled setend  && check_insn setend  'setend be'
5639
5640     [ $target_os = linux ] || [ $target_os = android ] ||
5641         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5642             $ARCH_EXT_LIST_ARM
5643
5644     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5645
5646     check_as as_arch_directive ".arch armv7-a"
5647     check_as as_dn_directive   "ra .dn d0.i16"
5648     check_as as_fpu_directive  ".fpu neon"
5649
5650     # llvm's integrated assembler supports .object_arch from llvm 3.5
5651     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5652         check_as as_object_arch ".object_arch armv4"
5653
5654     # MS armasm fails to assemble our PIC constructs
5655     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5656
5657 elif enabled mips; then
5658
5659     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5660     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5661     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5662
5663     # Enable minimum ISA based on selected options
5664     if enabled mips64; then
5665         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5666         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5667         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5668     else
5669         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5670         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5671         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5672         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5673     fi
5674
5675     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5676     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5677     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_headers msa.h || disable msa
5678     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5679     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5680
5681     if enabled bigendian && enabled msa; then
5682         disable msa
5683     fi
5684
5685 elif enabled parisc; then
5686
5687     if enabled gcc; then
5688         case $($cc -dumpversion) in
5689             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5690         esac
5691     fi
5692
5693 elif enabled ppc; then
5694
5695     enable local_aligned
5696
5697     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5698     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5699     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5700     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5701
5702     if enabled altivec; then
5703         check_cflags -maltivec -mabi=altivec
5704
5705         # check if our compiler supports Motorola AltiVec C API
5706         check_cc altivec altivec.h "vector signed int v1 = (vector signed int) { 0 };
5707                                     vector signed int v2 = (vector signed int) { 1 };
5708                                     v1 = vec_add(v1, v2);"
5709
5710         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5711     fi
5712
5713     if enabled vsx; then
5714         check_cflags -mvsx &&
5715         check_cc vsx altivec.h "int v[4] = { 0 };
5716                                 vector signed int v1 = vec_vsx_ld(0, v);"
5717     fi
5718
5719     if enabled power8; then
5720         check_cpp_condition power8 "altivec.h" "defined(_ARCH_PWR8)"
5721     fi
5722
5723 elif enabled x86; then
5724
5725     check_builtin rdtsc    intrin.h   "__rdtsc()"
5726     check_builtin mm_empty mmintrin.h "_mm_empty()"
5727
5728     enable local_aligned
5729
5730     # check whether EBP is available on x86
5731     # As 'i' is stored on the stack, this program will crash
5732     # if the base pointer is used to access it because the
5733     # base pointer is cleared in the inline assembly code.
5734     check_exec_crash <<EOF && enable ebp_available
5735 volatile int i=0;
5736 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5737 return i;
5738 EOF
5739
5740     # check whether EBX is available on x86
5741     check_inline_asm ebx_available '""::"b"(0)' &&
5742         check_inline_asm ebx_available '"":::"%ebx"'
5743
5744     # check whether xmm clobbers are supported
5745     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5746
5747     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5748         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5749
5750     # check whether binutils is new enough to compile SSSE3/MMXEXT
5751     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5752     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5753
5754     probe_x86asm(){
5755         x86asmexe_probe=$1
5756         if test_cmd $x86asmexe_probe -v; then
5757             x86asmexe=$x86asmexe_probe
5758             x86asm_type=nasm
5759             x86asm_debug="-g -F dwarf"
5760             X86ASMDEP=
5761             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5762         elif test_cmd $x86asmexe_probe --version; then
5763             x86asmexe=$x86asmexe_probe
5764             x86asm_type=yasm
5765             x86asm_debug="-g dwarf2"
5766             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
5767             X86ASM_DEPFLAGS=
5768         fi
5769         check_x86asm x86asm "movbe ecx, [5]"
5770     }
5771
5772     if ! disabled_any asm mmx x86asm; then
5773         disable x86asm
5774         for program in $x86asmexe nasm yasm; do
5775             probe_x86asm $program && break
5776         done
5777         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
5778         X86ASMFLAGS="-f $objformat"
5779         enabled pic               && append X86ASMFLAGS "-DPIC"
5780         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
5781         case "$objformat" in
5782             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
5783         esac
5784
5785         check_x86asm avx512_external "vmovdqa32 [eax]{k1}{z}, zmm0"
5786         check_x86asm avx2_external   "vextracti128 xmm0, ymm0, 0"
5787         check_x86asm xop_external    "vpmacsdd xmm0, xmm1, xmm2, xmm3"
5788         check_x86asm fma4_external   "vfmaddps ymm0, ymm1, ymm2, ymm3"
5789         check_x86asm cpunop          "CPU amdnop"
5790     fi
5791
5792     case "$cpu" in
5793         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5794             disable fast_clz
5795         ;;
5796     esac
5797
5798 fi
5799
5800 check_cc intrinsics_neon arm_neon.h "int16x8_t test = vdupq_n_s16(0)"
5801
5802 check_ldflags -Wl,--as-needed
5803 check_ldflags -Wl,-z,noexecstack
5804
5805 if ! disabled network; then
5806     check_func getaddrinfo $network_extralibs
5807     check_func inet_aton $network_extralibs
5808
5809     check_type netdb.h "struct addrinfo"
5810     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5811     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5812     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5813     check_type poll.h "struct pollfd"
5814     check_type netinet/sctp.h "struct sctp_event_subscribe"
5815     check_struct "sys/socket.h" "struct msghdr" msg_flags
5816     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5817     check_type netinet/in.h "struct sockaddr_in6"
5818     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5819     check_type "sys/types.h sys/socket.h" socklen_t
5820
5821     # Prefer arpa/inet.h over winsock2
5822     if check_headers arpa/inet.h ; then
5823         check_func closesocket
5824     elif check_headers winsock2.h ; then
5825         check_func_headers winsock2.h closesocket -lws2 &&
5826             network_extralibs="-lws2" ||
5827         { check_func_headers winsock2.h closesocket -lws2_32 &&
5828             network_extralibs="-lws2_32"; } || disable winsock2_h network
5829         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5830
5831         check_type ws2tcpip.h socklen_t
5832         check_type ws2tcpip.h "struct addrinfo"
5833         check_type ws2tcpip.h "struct group_source_req"
5834         check_type ws2tcpip.h "struct ip_mreq_source"
5835         check_type ws2tcpip.h "struct ipv6_mreq"
5836         check_type winsock2.h "struct pollfd"
5837         check_struct winsock2.h "struct sockaddr" sa_len
5838         check_type ws2tcpip.h "struct sockaddr_in6"
5839         check_type ws2tcpip.h "struct sockaddr_storage"
5840     else
5841         disable network
5842     fi
5843 fi
5844
5845 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5846 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5847 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5848 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5849 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5850 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5851 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5852
5853 case "$custom_allocator" in
5854     jemalloc)
5855         # jemalloc by default does not use a prefix
5856         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5857     ;;
5858     tcmalloc)
5859         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
5860         malloc_prefix=tc_
5861     ;;
5862 esac
5863
5864 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5865 check_func  ${malloc_prefix}memalign            && enable memalign
5866 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5867
5868 check_func  access
5869 check_func_headers stdlib.h arc4random
5870 check_lib   clock_gettime time.h clock_gettime || check_lib clock_gettime time.h clock_gettime -lrt
5871 check_func  fcntl
5872 check_func  fork
5873 check_func  gethrtime
5874 check_func  getopt
5875 check_func  getrusage
5876 check_func  gettimeofday
5877 check_func  isatty
5878 check_func  mkstemp
5879 check_func  mmap
5880 check_func  mprotect
5881 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5882 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
5883 check_func  sched_getaffinity
5884 check_func  setrlimit
5885 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5886 check_func  strerror_r
5887 check_func  sysconf
5888 check_func  sysctl
5889 check_func  usleep
5890
5891 check_func_headers conio.h kbhit
5892 check_func_headers io.h setmode
5893 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5894 check_func_headers mach/mach_time.h mach_absolute_time
5895 check_func_headers stdlib.h getenv
5896 check_func_headers sys/stat.h lstat
5897
5898 check_func_headers windows.h GetProcessAffinityMask
5899 check_func_headers windows.h GetProcessTimes
5900 check_func_headers windows.h GetSystemTimeAsFileTime
5901 check_func_headers windows.h LoadLibrary
5902 check_func_headers windows.h MapViewOfFile
5903 check_func_headers windows.h PeekNamedPipe
5904 check_func_headers windows.h SetConsoleTextAttribute
5905 check_func_headers windows.h SetConsoleCtrlHandler
5906 check_func_headers windows.h Sleep
5907 check_func_headers windows.h VirtualAlloc
5908 check_func_headers glob.h glob
5909 enabled xlib &&
5910     check_lib xlib "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5911
5912 check_headers direct.h
5913 check_headers dirent.h
5914 check_headers dxgidebug.h
5915 check_headers dxva.h
5916 check_headers dxva2api.h -D_WIN32_WINNT=0x0600
5917 check_headers io.h
5918 check_headers linux/perf_event.h
5919 check_headers libcrystalhd/libcrystalhd_if.h
5920 check_headers malloc.h
5921 check_headers net/udplite.h
5922 check_headers poll.h
5923 check_headers sys/param.h
5924 check_headers sys/resource.h
5925 check_headers sys/select.h
5926 check_headers sys/time.h
5927 check_headers sys/un.h
5928 check_headers termios.h
5929 check_headers unistd.h
5930 check_headers valgrind/valgrind.h
5931 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5932 check_headers windows.h
5933 check_headers X11/extensions/XvMClib.h
5934 check_headers asm/types.h
5935
5936 # it seems there are versions of clang in some distros that try to use the
5937 # gcc headers, which explodes for stdatomic
5938 # so we also check that atomics actually work here
5939 check_builtin stdatomic stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0); foo += bar"
5940
5941 check_lib advapi32 "windows.h"            RegCloseKey          -ladvapi32
5942 check_lib bcrypt   "windows.h bcrypt.h"   BCryptGenRandom      -lbcrypt &&
5943     check_cpp_condition bcrypt bcrypt.h "defined BCRYPT_RNG_ALGORITHM"
5944 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
5945 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
5946 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
5947
5948 check_lib android android/native_window.h ANativeWindow_acquire -landroid
5949 check_lib mediandk "stdint.h media/NdkImage.h" AImage_delete -lmediandk
5950 check_lib camera2ndk "stdbool.h stdint.h camera/NdkCameraManager.h" ACameraManager_create -lcamera2ndk
5951
5952 enabled appkit       && check_apple_framework AppKit
5953 enabled audiotoolbox && check_apple_framework AudioToolbox
5954 enabled avfoundation && check_apple_framework AVFoundation
5955 enabled coreimage    && check_apple_framework CoreImage
5956 enabled videotoolbox && check_apple_framework VideoToolbox
5957
5958 check_apple_framework CoreFoundation
5959 check_apple_framework CoreMedia
5960 check_apple_framework CoreVideo
5961
5962 enabled avfoundation && {
5963     disable coregraphics applicationservices
5964     check_lib coregraphics        CoreGraphics/CoreGraphics.h               CGGetActiveDisplayList "-framework CoreGraphics" ||
5965     check_lib applicationservices ApplicationServices/ApplicationServices.h CGGetActiveDisplayList "-framework ApplicationServices"; }
5966
5967 enabled videotoolbox && {
5968     check_lib coreservices CoreServices/CoreServices.h UTGetOSTypeFromString "-framework CoreServices"
5969     check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_HEVC "-framework CoreMedia"
5970 }
5971
5972 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5973
5974 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5975 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5976 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5977 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5978 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5979
5980 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
5981 check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
5982 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5983 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5984 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
5985 check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
5986
5987 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5988
5989 if ! disabled ffnvcodec; then
5990     check_pkg_config ffnvcodec "ffnvcodec >= 8.1.24.2" \
5991           "ffnvcodec/nvEncodeAPI.h ffnvcodec/dynlink_cuda.h ffnvcodec/dynlink_cuviddec.h ffnvcodec/dynlink_nvcuvid.h" "" || \
5992       check_pkg_config ffnvcodec "ffnvcodec >= 8.0.14.2 ffnvcodec < 8.1" \
5993           "ffnvcodec/nvEncodeAPI.h ffnvcodec/dynlink_cuda.h ffnvcodec/dynlink_cuviddec.h ffnvcodec/dynlink_nvcuvid.h" ""
5994 fi
5995
5996 check_cpp_condition winrt windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)"
5997
5998 if ! disabled w32threads && ! enabled pthreads; then
5999     check_func_headers "windows.h process.h" _beginthreadex &&
6000         check_type "windows.h" CONDITION_VARIABLE &&
6001         check_type "windows.h" INIT_ONCE &&
6002         enable w32threads || disable w32threads
6003     if ! enabled w32threads && enabled winrt; then
6004         check_func_headers "windows.h" CreateThread &&
6005             enable w32threads || disable w32threads
6006     fi
6007 fi
6008
6009 # check for some common methods of building with pthread support
6010 # do this before the optional library checks as some of them require pthreads
6011 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
6012     if check_lib pthreads pthread.h pthread_join   -pthread &&
6013        check_lib pthreads pthread.h pthread_create -pthread; then
6014         add_cflags -pthread
6015     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
6016          check_lib pthreads pthread.h pthread_create -pthreads; then
6017         add_cflags -pthreads
6018     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
6019          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
6020         add_cflags -ldl -pthread
6021     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
6022          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
6023         :
6024     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
6025          check_lib pthreads pthread.h pthread_create -lpthread; then
6026         :
6027     elif check_func pthread_join && check_func pthread_create; then
6028         enable pthreads
6029     fi
6030     check_cc pthreads "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER"
6031
6032     if enabled pthreads; then
6033         check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
6034         check_func pthread_cancel $pthreads_extralibs
6035     fi
6036 fi
6037
6038 enabled  zlib && { check_pkg_config zlib zlib "zlib.h" zlibVersion ||
6039                    check_lib zlib   zlib.h      zlibVersion    -lz; }
6040 enabled bzlib && check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
6041 enabled  lzma && check_lib lzma   lzma.h lzma_version_number -llzma
6042
6043 # On some systems dynamic loading requires no extra linker flags
6044 check_lib libdl dlfcn.h "dlopen dlsym" || check_lib libdl dlfcn.h "dlopen dlsym" -ldl
6045
6046 check_lib libm math.h sin -lm
6047
6048 atan2f_args=2
6049 copysign_args=2
6050 hypot_args=2
6051 ldexpf_args=2
6052 powf_args=2
6053
6054 for func in $MATH_FUNCS; do
6055     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
6056 done
6057
6058 for func in $COMPLEX_FUNCS; do
6059     eval check_complexfunc $func \${${func}_args:-1}
6060 done
6061
6062 # these are off by default, so fail if requested and not available
6063 enabled cuda_sdk          && require cuda_sdk cuda.h cuCtxCreate -lcuda
6064 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
6065 enabled decklink          && { require_headers DeckLinkAPI.h &&
6066                                { test_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a090500" || die "ERROR: Decklink API version must be >= 10.9.5."; } }
6067 enabled libndi_newtek     && require_headers Processing.NDI.Lib.h
6068 enabled frei0r            && require_headers "frei0r.h dlfcn.h"
6069 enabled gmp               && require gmp gmp.h mpz_export -lgmp
6070 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
6071 enabled jni               && { [ $target_os = "android" ] && check_headers jni.h && enabled pthreads || die "ERROR: jni not found"; }
6072 enabled ladspa            && require_headers "ladspa.h dlfcn.h"
6073 enabled libaom            && require_pkg_config libaom "aom >= 1.0.0" aom/aom_codec.h aom_codec_version
6074 enabled lv2               && require_pkg_config lv2 lilv-0 "lilv/lilv.h" lilv_world_new
6075 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
6076 enabled libass            && require_pkg_config libass libass ass/ass.h ass_library_init
6077 enabled libbluray         && require_pkg_config libbluray libbluray libbluray/bluray.h bd_open
6078 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
6079 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
6080                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
6081                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
6082 enabled libcaca           && require_pkg_config libcaca caca caca.h caca_create_canvas
6083 enabled libcodec2         && require libcodec2 codec2/codec2.h codec2_create -lcodec2
6084 enabled libdav1d          && require_pkg_config libdav1d "dav1d >= 0.0.1" "dav1d/dav1d.h" dav1d_version
6085 enabled libdavs2          && require_pkg_config libdavs2 "davs2 >= 1.6.0" davs2.h davs2_decoder_open
6086 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
6087 enabled libdrm            && require_pkg_config libdrm libdrm xf86drm.h drmGetVersion
6088 enabled libfdk_aac        && { check_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
6089                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
6090                                  warn "using libfdk without pkg-config"; } }
6091 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"
6092 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
6093 enabled fontconfig        && enable libfontconfig
6094 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
6095 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
6096 enabled libfribidi        && require_pkg_config libfribidi fribidi fribidi.h fribidi_version_info
6097 enabled libgme            && { check_pkg_config libgme libgme gme/gme.h gme_new_emu ||
6098                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }
6099 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
6100                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
6101                                done || die "ERROR: libgsm not found"; }
6102 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc $pthreads_extralibs
6103 enabled libklvanc         && require libklvanc libklvanc/vanc.h klvanc_context_create -lklvanc
6104 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
6105 enabled liblensfun        && require_pkg_config liblensfun lensfun lensfun.h lf_db_new
6106 # While it may appear that require is being used as a pkg-config
6107 # fallback for libmfx, it is actually being used to detect a different
6108 # installation route altogether.  If libmfx is installed via the Intel
6109 # Media SDK or Intel Media Server Studio, these don't come with
6110 # pkg-config support.  Instead, users should make sure that the build
6111 # can find the libraries and headers through other means.
6112 enabled libmfx            && { check_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit ||
6113                                { require libmfx "mfx/mfxvideo.h" MFXInit "-llibmfx $advapi32_extralibs" && warn "using libmfx without pkg-config"; } }
6114 enabled libmodplug        && require_pkg_config libmodplug libmodplug libmodplug/modplug.h ModPlug_Load
6115 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame $libm_extralibs
6116 enabled libmysofa         && { check_pkg_config libmysofa libmysofa mysofa.h mysofa_load ||
6117                                require libmysofa mysofa.h mysofa_load -lmysofa $zlib_extralibs; }
6118 enabled libnpp            && { check_lib libnpp npp.h nppGetLibVersion -lnppig -lnppicc -lnppc -lnppidei ||
6119                                check_lib libnpp npp.h nppGetLibVersion -lnppi -lnppc -lnppidei ||
6120                                die "ERROR: libnpp not found"; }
6121 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
6122 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
6123 enabled libopencv         && { check_headers opencv2/core/core_c.h &&
6124                                { check_pkg_config libopencv opencv opencv2/core/core_c.h cvCreateImageHeader ||
6125                                  require libopencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
6126                                require_pkg_config libopencv opencv opencv/cxcore.h cvCreateImageHeader; }
6127 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
6128 enabled libopenjpeg       && { check_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version ||
6129                                { require_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } }
6130 enabled libopenmpt        && require_pkg_config libopenmpt "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create -lstdc++ && append libopenmpt_extralibs "-lstdc++"
6131 enabled libopus           && {
6132     enabled libopus_decoder && {
6133         require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
6134     }
6135     enabled libopus_encoder && {
6136         require_pkg_config libopus opus opus_multistream.h opus_multistream_surround_encoder_create
6137     }
6138 }
6139 enabled libpulse          && require_pkg_config libpulse libpulse pulse/pulseaudio.h pa_context_new
6140 enabled librsvg           && require_pkg_config librsvg librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
6141 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
6142 enabled librubberband     && require_pkg_config librubberband "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new -lstdc++ && append librubberband_extralibs "-lstdc++"
6143 enabled libshine          && require_pkg_config libshine shine shine/layer3.h shine_encode_buffer
6144 enabled libsmbclient      && { check_pkg_config libsmbclient smbclient libsmbclient.h smbc_init ||
6145                                require libsmbclient libsmbclient.h smbc_init -lsmbclient; }
6146 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy -lstdc++
6147 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
6148 enabled libssh            && require_pkg_config libssh libssh libssh/sftp.h sftp_init
6149 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init
6150 enabled libsrt            && require_pkg_config libsrt "srt >= 1.3.0" srt/srt.h srt_socket
6151 enabled libtensorflow     && require libtensorflow tensorflow/c/c_api.h TF_Version -ltensorflow
6152 enabled libtesseract      && require_pkg_config libtesseract tesseract tesseract/capi.h TessBaseAPICreate
6153 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
6154 enabled libtls            && require_pkg_config libtls libtls tls.h tls_configure
6155 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
6156                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
6157                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
6158 enabled libv4l2           && require_pkg_config libv4l2 libv4l2 libv4l2.h v4l2_ioctl
6159 enabled libvidstab        && require_pkg_config libvidstab "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
6160 enabled libvmaf           && require_pkg_config libvmaf "libvmaf >= 1.3.9" libvmaf.h compute_vmaf
6161 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
6162 enabled libvorbis         && require_pkg_config libvorbis vorbis vorbis/codec.h vorbis_info_init &&
6163                              require_pkg_config libvorbisenc vorbisenc vorbis/vorbisenc.h vorbis_encode_init
6164
6165 enabled libvpx            && {
6166     enabled libvpx_vp8_decoder && {
6167         check_pkg_config libvpx_vp8_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
6168             check_lib libvpx_vp8_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_dec_init_ver VPX_IMG_FMT_HIGHBITDEPTH" -lvpx ||
6169                 die "ERROR: libvpx decoder version must be >=1.4.0";
6170     }
6171     enabled libvpx_vp8_encoder && {
6172         check_pkg_config libvpx_vp8_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
6173             check_lib libvpx_vp8_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VPX_IMG_FMT_HIGHBITDEPTH" -lvpx ||
6174                 die "ERROR: libvpx encoder version must be >=1.4.0";
6175     }
6176     enabled libvpx_vp9_decoder && {
6177         check_pkg_config libvpx_vp9_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
6178             check_lib libvpx_vp9_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx VPX_IMG_FMT_HIGHBITDEPTH" "-lvpx $libm_extralibs"
6179     }
6180     enabled libvpx_vp9_encoder && {
6181         check_pkg_config libvpx_vp9_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
6182             check_lib libvpx_vp9_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VPX_IMG_FMT_HIGHBITDEPTH" "-lvpx $libm_extralibs"
6183     }
6184     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
6185         die "libvpx enabled but no supported decoders found"
6186     fi
6187 }
6188
6189 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
6190 enabled libwebp           && {
6191     enabled libwebp_encoder      && require_pkg_config libwebp "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
6192     enabled libwebp_anim_encoder && check_pkg_config libwebp_anim_encoder "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit; }
6193 enabled libx264           && { check_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode ||
6194                                { require libx264 "stdint.h x264.h" x264_encoder_encode "-lx264 $pthreads_extralibs $libm_extralibs" &&
6195                                  warn "using libx264 without pkg-config"; } } &&
6196                              require_cpp_condition libx264 x264.h "X264_BUILD >= 118" &&
6197                              check_cpp_condition libx262 x264.h "X264_MPEG2"
6198 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
6199                              require_cpp_condition libx265 x265.h "X265_BUILD >= 68"
6200 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode "-lxavs $pthreads_extralibs $libm_extralibs"
6201 enabled libxavs2          && require_pkg_config libxavs2 "xavs2 >= 1.3.0" "stdint.h xavs2.h" xavs2_api_get
6202 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
6203 enabled libzimg           && require_pkg_config libzimg "zimg >= 2.7.0" zimg.h zimg_get_api_version
6204 enabled libzmq            && require_pkg_config libzmq libzmq zmq.h zmq_ctx_new
6205 enabled libzvbi           && require_pkg_config libzvbi zvbi-0.2 libzvbi.h vbi_decoder_new &&
6206                              { test_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
6207                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
6208 enabled libxml2           && require_pkg_config libxml2 libxml-2.0 libxml2/libxml/xmlversion.h xmlCheckVersion
6209 enabled mbedtls           && { check_pkg_config mbedtls mbedtls mbedtls/x509_crt.h mbedtls_x509_crt_init ||
6210                                check_pkg_config mbedtls mbedtls mbedtls/ssl.h mbedtls_ssl_init ||
6211                                check_lib mbedtls mbedtls/ssl.h mbedtls_ssl_init -lmbedtls -lmbedx509 -lmbedcrypto ||
6212                                die "ERROR: mbedTLS not found"; }
6213 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
6214 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
6215                                { ! enabled cross_compile &&
6216                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
6217                                  add_ldflags -L/opt/vc/lib/ &&
6218                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
6219                                die "ERROR: mmal not found" &&
6220                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
6221 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
6222                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
6223                                die "ERROR: openal not found"; } &&
6224                              { test_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
6225                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
6226 enabled opencl            && { check_pkg_config opencl OpenCL CL/cl.h clEnqueueNDRangeKernel ||
6227                                check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
6228                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
6229                                die "ERROR: opencl not found"; } &&
6230                              { test_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
6231                                test_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
6232                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
6233 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
6234                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
6235                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
6236                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
6237                                die "ERROR: opengl not found."
6238                              }
6239 enabled omx               && require_headers OMX_Core.h
6240 enabled omx_rpi           && { check_headers OMX_Core.h ||
6241                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_headers OMX_Core.h ; } ||
6242                                die "ERROR: OpenMAX IL headers not found"; } && enable omx
6243 enabled openssl           && { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
6244                                check_pkg_config openssl openssl openssl/ssl.h SSL_library_init ||
6245                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
6246                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
6247                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
6248                                die "ERROR: openssl not found"; }
6249 enabled rkmpp             && { require_pkg_config rkmpp rockchip_mpp  rockchip/rk_mpi.h mpp_create &&
6250                                require_pkg_config rockchip_mpp "rockchip_mpp >= 1.3.7" rockchip/rk_mpi.h mpp_create &&
6251                                { enabled libdrm ||
6252                                  die "ERROR: rkmpp requires --enable-libdrm"; }
6253                              }
6254 enabled vapoursynth       && require_pkg_config vapoursynth "vapoursynth-script >= 42" VSScript.h vsscript_init
6255
6256
6257 if enabled gcrypt; then
6258     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
6259     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
6260         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
6261         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
6262         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
6263             die "ERROR: gcrypt not found"
6264         add_cflags $gcrypt_cflags
6265     else
6266         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
6267     fi
6268 fi
6269
6270 if enabled sdl2; then
6271     SDL2_CONFIG="${cross_prefix}sdl2-config"
6272     test_pkg_config sdl2 "sdl2 >= 2.0.1 sdl2 < 2.1.0" SDL_events.h SDL_PollEvent
6273     if disabled sdl2 && "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6274         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6275         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6276         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6277         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6278         check_func_headers SDL_events.h SDL_PollEvent $sdl2_extralibs $sdl2_cflags &&
6279             enable sdl2
6280     fi
6281     if test $target_os = "mingw32"; then
6282         sdl2_extralibs=$(filter_out '-mwindows' $sdl2_extralibs)
6283     fi
6284 fi
6285
6286 if enabled decklink; then
6287     case $target_os in
6288         mingw32*|mingw64*|win32|win64)
6289             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6290             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6291             ;;
6292     esac
6293 fi
6294
6295 enabled securetransport &&
6296     check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6297     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" ||
6298         disable securetransport
6299
6300 enabled securetransport &&
6301     check_func SecItemImport "-Wl,-framework,CoreFoundation -Wl,-framework,Security"
6302
6303 enabled schannel &&
6304     check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6305     test_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" &&
6306     schannel_extralibs="-lsecur32" ||
6307         disable schannel
6308
6309 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6310 enabled makeinfo \
6311     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6312     && enable makeinfo_html || disable makeinfo_html
6313 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6314 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6315 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6316 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6317
6318 # check V4L2 codecs available in the API
6319 check_headers linux/fb.h
6320 check_headers linux/videodev2.h
6321 test_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6322 check_cc v4l2_m2m linux/videodev2.h "int i = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_VIDEO_M2M | V4L2_BUF_FLAG_LAST;"
6323 check_cc vc1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VC1_ANNEX_G;"
6324 check_cc mpeg1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG1;"
6325 check_cc mpeg2_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG2;"
6326 check_cc mpeg4_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG4;"
6327 check_cc hevc_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_HEVC;"
6328 check_cc h263_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H263;"
6329 check_cc h264_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H264;"
6330 check_cc vp8_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP8;"
6331 check_cc vp9_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP9;"
6332
6333 check_headers sys/videoio.h
6334 test_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6335
6336 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6337 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6338 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6339 # w32api 3.12 had it defined wrong
6340 check_cpp_condition vfwcap_defines vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER"
6341
6342 check_type "dshow.h" IBaseFilter
6343
6344 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6345 check_headers "dev/bktr/ioctl_meteor.h dev/bktr/ioctl_bt848.h"                   ||
6346     check_headers "machine/ioctl_meteor.h machine/ioctl_bt848.h"                 ||
6347     check_headers "dev/video/meteor/ioctl_meteor.h dev/video/bktr/ioctl_bt848.h" ||
6348     check_headers "dev/ic/bt8xx.h"
6349
6350 if check_struct sys/soundcard.h audio_buf_info bytes; then
6351     enable_sanitized sys/soundcard.h
6352 else
6353     test_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_sanitized sys/soundcard.h
6354     #include <sys/soundcard.h>
6355     audio_buf_info abc;
6356 EOF
6357 fi
6358
6359 enabled alsa && check_pkg_config alsa alsa "alsa/asoundlib.h" snd_pcm_htimestamp ||
6360     check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
6361
6362 enabled libjack &&
6363     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
6364
6365 enabled sndio && check_lib sndio sndio.h sio_open -lsndio
6366
6367 if enabled libcdio; then
6368     check_pkg_config libcdio libcdio_paranoia "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open ||
6369     check_pkg_config libcdio libcdio_paranoia "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open ||
6370     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6371     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6372     die "ERROR: No usable libcdio/cdparanoia found"
6373 fi
6374
6375 enabled libxcb && check_pkg_config libxcb "xcb >= 1.4" xcb/xcb.h xcb_connect ||
6376     disable libxcb_shm libxcb_shape libxcb_xfixes
6377
6378 if enabled libxcb; then
6379     enabled libxcb_shm    && check_pkg_config libxcb_shm    xcb-shm    xcb/shm.h    xcb_shm_attach
6380     enabled libxcb_shape  && check_pkg_config libxcb_shape  xcb-shape  xcb/shape.h  xcb_shape_get_rectangles
6381     enabled libxcb_xfixes && check_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
6382 fi
6383
6384 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6385
6386 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6387 # the desktop api partition
6388 test_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
6389 #ifdef WINAPI_FAMILY
6390 #include <winapifamily.h>
6391 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
6392 #error desktop, not uwp
6393 #else
6394 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
6395 #endif
6396 #else
6397 #error no family set
6398 #endif
6399 EOF
6400
6401 enabled vaapi &&
6402     check_pkg_config vaapi "libva >= 0.35.0" "va/va.h" vaInitialize
6403
6404 if enabled vaapi; then
6405     check_pkg_config vaapi_drm "libva-drm" "va/va_drm.h" vaGetDisplayDRM
6406
6407     if enabled xlib; then
6408         check_pkg_config vaapi_x11 "libva-x11" "va/va_x11.h" vaGetDisplay
6409     fi
6410
6411     check_cpp_condition vaapi_1 "va/va.h" "VA_CHECK_VERSION(1, 0, 0)"
6412 fi
6413
6414 if enabled_all opencl libdrm ; then
6415     check_type "CL/cl_intel.h" "clCreateImageFromFdINTEL_fn" &&
6416         enable opencl_drm_beignet
6417     check_func_headers "CL/cl_ext.h" clImportMemoryARM &&
6418         enable opencl_drm_arm
6419 fi
6420
6421 if enabled_all opencl vaapi ; then
6422     enabled opencl_drm_beignet && enable opencl_vaapi_beignet
6423     check_type "CL/cl.h CL/va_ext.h" "clCreateFromVA_APIMediaSurfaceINTEL_fn" &&
6424         enable opencl_vaapi_intel_media
6425 fi
6426
6427 if enabled_all opencl dxva2 ; then
6428     check_type "CL/cl_dx9_media_sharing.h" cl_dx9_surface_info_khr &&
6429         enable opencl_dxva2
6430 fi
6431
6432 if enabled_all opencl d3d11va ; then
6433     check_type "CL/cl_d3d11.h" clGetDeviceIDsFromD3D11KHR_fn &&
6434         enable opencl_d3d11
6435 fi
6436
6437 enabled vdpau &&
6438     check_cpp_condition vdpau vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP"
6439
6440 enabled vdpau &&
6441     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6442
6443 enabled crystalhd && check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
6444
6445 if enabled x86; then
6446     case $target_os in
6447         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6448             ;;
6449         *)
6450             disable ffnvcodec cuvid nvdec nvenc
6451             ;;
6452     esac
6453 else
6454     disable ffnvcodec cuvid nvdec nvenc
6455 fi
6456
6457 enabled ffnvcodec && enable cuda
6458
6459 enabled nvenc &&
6460     test_cc -I$source_path <<EOF || disable nvenc
6461 #include <ffnvcodec/nvEncodeAPI.h>
6462 NV_ENCODE_API_FUNCTION_LIST flist;
6463 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6464 int main(void) { return 0; }
6465 EOF
6466
6467 enabled amf &&
6468     check_cpp_condition amf "AMF/core/Version.h" \
6469         "(AMF_VERSION_MAJOR << 48 | AMF_VERSION_MINOR << 32 | AMF_VERSION_RELEASE << 16 | AMF_VERSION_BUILD_NUM) >= 0x0001000400040001"
6470
6471 # Funny iconv installations are not unusual, so check it after all flags have been set
6472 if enabled libc_iconv; then
6473     check_func_headers iconv.h iconv
6474 elif enabled iconv; then
6475     check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6476 fi
6477
6478 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6479
6480 # add some useful compiler flags if supported
6481 check_cflags -Wdeclaration-after-statement
6482 check_cflags -Wall
6483 check_cflags -Wdisabled-optimization
6484 check_cflags -Wpointer-arith
6485 check_cflags -Wredundant-decls
6486 check_cflags -Wwrite-strings
6487 check_cflags -Wtype-limits
6488 check_cflags -Wundef
6489 check_cflags -Wmissing-prototypes
6490 check_cflags -Wno-pointer-to-int-cast
6491 check_cflags -Wstrict-prototypes
6492 check_cflags -Wempty-body
6493
6494 if enabled extra_warnings; then
6495     check_cflags -Wcast-qual
6496     check_cflags -Wextra
6497     check_cflags -Wpedantic
6498 fi
6499
6500 check_disable_warning(){
6501     warning_flag=-W${1#-Wno-}
6502     test_cflags $unknown_warning_flags $warning_flag && add_cflags $1
6503 }
6504
6505 test_cflags -Werror=unused-command-line-argument &&
6506     append unknown_warning_flags "-Werror=unused-command-line-argument"
6507 test_cflags -Werror=unknown-warning-option &&
6508     append unknown_warning_flags "-Werror=unknown-warning-option"
6509
6510 check_disable_warning -Wno-parentheses
6511 check_disable_warning -Wno-switch
6512 check_disable_warning -Wno-format-zero-length
6513 check_disable_warning -Wno-pointer-sign
6514 check_disable_warning -Wno-unused-const-variable
6515 check_disable_warning -Wno-bool-operation
6516 check_disable_warning -Wno-char-subscripts
6517
6518 check_disable_warning_headers(){
6519     warning_flag=-W${1#-Wno-}
6520     test_cflags $warning_flag && add_cflags_headers $1
6521 }
6522
6523 check_disable_warning_headers -Wno-deprecated-declarations
6524 check_disable_warning_headers -Wno-unused-variable
6525
6526 test_cc <<EOF && enable blocks_extension
6527 void (^block)(void);
6528 EOF
6529
6530 # add some linker flags
6531 check_ldflags -Wl,--warn-common
6532 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6533 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir && add_ldsoflags -Wl,-rpath,$libdir
6534 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6535
6536 # add some strip flags
6537 check_stripflags -x
6538
6539 enabled neon_clobber_test &&
6540     check_ldflags -Wl,--wrap,avcodec_open2              \
6541                   -Wl,--wrap,avcodec_decode_audio4      \
6542                   -Wl,--wrap,avcodec_decode_video2      \
6543                   -Wl,--wrap,avcodec_decode_subtitle2   \
6544                   -Wl,--wrap,avcodec_encode_audio2      \
6545                   -Wl,--wrap,avcodec_encode_video2      \
6546                   -Wl,--wrap,avcodec_encode_subtitle    \
6547                   -Wl,--wrap,avcodec_send_packet        \
6548                   -Wl,--wrap,avcodec_receive_packet     \
6549                   -Wl,--wrap,avcodec_send_frame         \
6550                   -Wl,--wrap,avcodec_receive_frame      \
6551                   -Wl,--wrap,swr_convert                \
6552                   -Wl,--wrap,avresample_convert ||
6553     disable neon_clobber_test
6554
6555 enabled xmm_clobber_test &&
6556     check_ldflags -Wl,--wrap,avcodec_open2              \
6557                   -Wl,--wrap,avcodec_decode_audio4      \
6558                   -Wl,--wrap,avcodec_decode_video2      \
6559                   -Wl,--wrap,avcodec_decode_subtitle2   \
6560                   -Wl,--wrap,avcodec_encode_audio2      \
6561                   -Wl,--wrap,avcodec_encode_video2      \
6562                   -Wl,--wrap,avcodec_encode_subtitle    \
6563                   -Wl,--wrap,avcodec_send_packet        \
6564                   -Wl,--wrap,avcodec_receive_packet     \
6565                   -Wl,--wrap,avcodec_send_frame         \
6566                   -Wl,--wrap,avcodec_receive_frame      \
6567                   -Wl,--wrap,swr_convert                \
6568                   -Wl,--wrap,avresample_convert         \
6569                   -Wl,--wrap,sws_scale ||
6570     disable xmm_clobber_test
6571
6572 check_ld "cc" proper_dce <<EOF
6573 extern const int array[512];
6574 static inline int func(void) { return array[0]; }
6575 int main(void) { return 0; }
6576 EOF
6577
6578 if enabled proper_dce; then
6579     echo "X { local: *; };" > $TMPV
6580     if test_ldflags -Wl,${version_script},$TMPV; then
6581         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6582         quotes='""'
6583         test_cc <<EOF && enable symver_asm_label
6584 void ff_foo(void) __asm__ ("av_foo@VERSION");
6585 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6586 EOF
6587         test_cc <<EOF && enable symver_gnu_asm
6588 __asm__(".symver ff_foo,av_foo@VERSION");
6589 void ff_foo(void) {}
6590 EOF
6591     fi
6592 fi
6593
6594 if [ -z "$optflags" ]; then
6595     if enabled small; then
6596         optflags=$cflags_size
6597     elif enabled optimizations; then
6598         optflags=$cflags_speed
6599     else
6600         optflags=$cflags_noopt
6601     fi
6602 fi
6603
6604 if [ -z "$nvccflags" ]; then
6605     nvccflags=$nvccflags_default
6606 fi
6607
6608 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6609     nvccflags="$nvccflags -m64"
6610 else
6611     nvccflags="$nvccflags -m32"
6612 fi
6613
6614 check_optflags(){
6615     check_cflags "$@"
6616     enabled lto && check_ldflags "$@"
6617 }
6618
6619 check_optflags $optflags
6620 check_optflags -fno-math-errno
6621 check_optflags -fno-signed-zeros
6622
6623 if enabled lto; then
6624     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6625     check_cflags  -flto
6626     check_ldflags -flto $cpuflags
6627     disable inline_asm_direct_symbol_refs
6628 fi
6629
6630 enabled ftrapv && check_cflags -ftrapv
6631
6632 test_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6633 int x;
6634 EOF
6635
6636
6637 if enabled icc; then
6638     # Just warnings, no remarks
6639     check_cflags -w1
6640     # -wd: Disable following warnings
6641     # 144, 167, 556: -Wno-pointer-sign
6642     # 188: enumerated type mixed with another type
6643     # 1292: attribute "foo" ignored
6644     # 1419: external declaration in primary source file
6645     # 10006: ignoring unknown option -fno-signed-zeros
6646     # 10148: ignoring unknown option -Wno-parentheses
6647     # 10156: ignoring option '-W'; no argument required
6648     # 13200: No EMMS instruction before call to function
6649     # 13203: No EMMS instruction before return from function
6650     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6651     # 11030: Warning unknown option --as-needed
6652     # 10156: ignoring option '-export'; no argument required
6653     check_ldflags -wd10156,11030
6654     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6655     enable ebp_available
6656     # The test above does not test linking
6657     enabled lto && disable symver_asm_label
6658     if enabled x86_32; then
6659         icc_version=$($cc -dumpversion)
6660         test ${icc_version%%.*} -ge 11 &&
6661             check_cflags -falign-stack=maintain-16-byte ||
6662             disable aligned_stack
6663     fi
6664 elif enabled gcc; then
6665     check_optflags -fno-tree-vectorize
6666     check_cflags -Werror=format-security
6667     check_cflags -Werror=implicit-function-declaration
6668     check_cflags -Werror=missing-prototypes
6669     check_cflags -Werror=return-type
6670     check_cflags -Werror=vla
6671     check_cflags -Wformat
6672     check_cflags -fdiagnostics-color=auto
6673     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6674     if enabled x86_32; then
6675         case $target_os in
6676         *bsd*)
6677             # BSDs don't guarantee a 16 byte aligned stack, but we can
6678             # request GCC to try to maintain 16 byte alignment throughout
6679             # function calls. Library entry points that might call assembly
6680             # functions align the stack. (The parameter means 2^4 bytes.)
6681             check_cflags -mpreferred-stack-boundary=4
6682             ;;
6683         esac
6684     fi
6685 elif enabled llvm_gcc; then
6686     check_cflags -mllvm -stack-alignment=16
6687 elif enabled clang; then
6688     if enabled x86_32; then
6689         # Clang doesn't support maintaining alignment without assuming the
6690         # same alignment in every function. If 16 byte alignment would be
6691         # enabled, one would also have to either add attribute_align_arg on
6692         # every single entry point into the libraries or enable -mstackrealign
6693         # (doing stack realignment in every single function).
6694         case $target_os in
6695         mingw32|win32|*bsd*)
6696             disable aligned_stack
6697             ;;
6698         *)
6699             check_cflags -mllvm -stack-alignment=16
6700             check_cflags -mstack-alignment=16
6701             ;;
6702         esac
6703     else
6704         check_cflags -mllvm -stack-alignment=16
6705         check_cflags -mstack-alignment=16
6706     fi
6707     check_cflags -Qunused-arguments
6708     check_cflags -Werror=implicit-function-declaration
6709     check_cflags -Werror=missing-prototypes
6710     check_cflags -Werror=return-type
6711 elif enabled cparser; then
6712     add_cflags -Wno-missing-variable-declarations
6713     add_cflags -Wno-empty-statement
6714 elif enabled armcc; then
6715     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6716     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6717     # 2523: use of inline assembly is deprecated
6718     add_cflags -W${armcc_opt},--diag_suppress=2523
6719     add_cflags -W${armcc_opt},--diag_suppress=1207
6720     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6721     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6722     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6723     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6724 elif enabled pathscale; then
6725     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6726     disable inline_asm
6727 elif enabled_any msvc icl; then
6728     enabled x86_32 && disable aligned_stack
6729     enabled_all x86_32 debug && add_cflags -Oy-
6730     enabled debug && add_ldflags -debug
6731     enable pragma_deprecated
6732     if enabled icl; then
6733         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6734         # (correctly) on icl 13.x.
6735         test_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6736             add_cflags -Qansi-alias
6737         # Some inline asm is not compilable in debug
6738         if enabled debug; then
6739             disable ebp_available
6740             disable ebx_available
6741         fi
6742     fi
6743     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6744     check_cpp_condition log2 crtversion.h "_VC_CRT_MAJOR_VERSION >= 12"
6745     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6746     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6747     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6748     # MSVC 2013 and newer can handle it fine.
6749     # If this declspec fails, force including stdlib.h before the restrict redefinition
6750     # happens in config.h.
6751     if [ $restrict_keyword != restrict ]; then
6752         test_cc <<EOF || add_cflags -FIstdlib.h
6753 __declspec($restrict_keyword) void *foo(int);
6754 EOF
6755     fi
6756     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6757     # Issue has been fixed in MSVC v19.00.24218.
6758     test_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6759         check_cflags -d2SSAOptimizer-
6760     # enable utf-8 source processing on VS2015 U2 and newer
6761     test_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6762         add_cflags -utf-8
6763 fi
6764
6765 for pfx in "" host_; do
6766     varname=${pfx%_}cc_type
6767     eval "type=\$$varname"
6768     if [ "$type" = "msvc" ]; then
6769         test_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6770 static inline int foo(int a) { return a; }
6771 EOF
6772     fi
6773 done
6774
6775 case $as_type in
6776     clang)
6777         add_asflags -Qunused-arguments
6778     ;;
6779 esac
6780
6781 case $ld_type in
6782     clang)
6783         check_ldflags -Qunused-arguments
6784     ;;
6785 esac
6786
6787 enable frame_thread_encoder
6788
6789 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6790
6791 check_deps $CONFIG_LIST       \
6792            $CONFIG_EXTRA      \
6793            $HAVE_LIST         \
6794            $ALL_COMPONENTS    \
6795
6796 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"
6797 enabled avresample && warn "Building with deprecated library libavresample"
6798
6799 case $target_os in
6800 haiku)
6801     disable memalign
6802     disable posix_memalign
6803     ;;
6804 *-dos|freedos|opendos)
6805     if test_cpp_condition sys/version.h "defined(__DJGPP__) && __DJGPP__ == 2 && __DJGPP_MINOR__ == 5"; then
6806         disable memalign
6807     fi
6808     ;;
6809 esac
6810
6811 flatten_extralibs(){
6812     nested_entries=
6813     list_name=$1
6814     eval list=\$${1}
6815     for entry in $list; do
6816         entry_copy=$entry
6817         resolve entry_copy
6818         flat_entries=
6819         for e in $entry_copy; do
6820             case $e in
6821                 *_extralibs) nested_entries="$nested_entries$e ";;
6822                           *) flat_entries="$flat_entries$e ";;
6823             esac
6824         done
6825         eval $entry="\$flat_entries"
6826     done
6827     append $list_name "$nested_entries"
6828
6829     resolve nested_entries
6830     if test -n "$(filter '*_extralibs' $nested_entries)"; then
6831         flatten_extralibs $list_name
6832     fi
6833 }
6834
6835 flatten_extralibs_wrapper(){
6836     list_name=$1
6837     flatten_extralibs $list_name
6838     unique $list_name
6839     resolve $list_name
6840     eval $list_name=\$\(\$ldflags_filter \$$list_name\)
6841     eval printf \''%s'\' \""\$$list_name"\"
6842 }
6843
6844 for linkunit in $LIBRARY_LIST; do
6845     unset current_extralibs
6846     eval components=\$$(toupper ${linkunit})_COMPONENTS_LIST
6847     for comp in ${components}; do
6848         enabled $comp || continue
6849         comp_extralibs="${comp}_extralibs"
6850         append current_extralibs $comp_extralibs
6851     done
6852     eval prepend ${linkunit}_extralibs $current_extralibs
6853 done
6854
6855 for linkunit in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
6856     eval ${linkunit}_extralibs=\$\(flatten_extralibs_wrapper ${linkunit}_extralibs\)
6857 done
6858
6859 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6860
6861 for thread in $THREADS_LIST; do
6862     if enabled $thread; then
6863         test -n "$thread_type" &&
6864             die "ERROR: Only one thread type must be selected." ||
6865             thread_type="$thread"
6866     fi
6867 done
6868
6869 if disabled stdatomic; then
6870     if enabled atomics_gcc; then
6871         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6872     elif enabled atomics_win32; then
6873         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6874     elif enabled atomics_suncc; then
6875         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6876     elif enabled pthreads; then
6877         add_compat atomics/pthread/stdatomic.o
6878         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6879     else
6880         enabled threads && die "Threading is enabled, but no atomics are available"
6881         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6882     fi
6883 fi
6884
6885 # Check if requested libraries were found.
6886 for lib in $AUTODETECT_LIBS; do
6887     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6888 done
6889
6890 enabled zlib && add_cppflags -DZLIB_CONST
6891
6892 # conditional library dependencies, in any order
6893 enabled afftdn_filter       && prepend avfilter_deps "avcodec"
6894 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6895 enabled afir_filter         && prepend avfilter_deps "avcodec"
6896 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6897 enabled aresample_filter    && prepend avfilter_deps "swresample"
6898 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6899 enabled bm3d_filter         && prepend avfilter_deps "avcodec"
6900 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6901 enabled convolve_filter     && prepend avfilter_deps "avcodec"
6902 enabled deconvolve_filter   && prepend avfilter_deps "avcodec"
6903 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6904 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6905 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6906 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6907 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
6908 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6909 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6910 enabled pan_filter          && prepend avfilter_deps "swresample"
6911 enabled pp_filter           && prepend avfilter_deps "postproc"
6912 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6913 enabled resample_filter && prepend avfilter_deps "avresample"
6914 enabled sab_filter          && prepend avfilter_deps "swscale"
6915 enabled scale_filter    && prepend avfilter_deps "swscale"
6916 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6917 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6918 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6919 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6920 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6921 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
6922 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6923 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6924 enabled spp_filter          && prepend avfilter_deps "avcodec"
6925 enabled sr_filter           && prepend avfilter_deps "avformat swscale"
6926 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6927 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6928 enabled zoompan_filter      && prepend avfilter_deps "swscale"
6929
6930 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6931
6932 #FIXME
6933 enabled_any sdl2_outdev opengl_outdev && enabled sdl2 &&
6934     add_cflags $(filter_out '-Dmain=SDL_main' $sdl2_cflags)
6935
6936 enabled opus_decoder    && prepend avcodec_deps "swresample"
6937
6938 # reorder the items at var $1 to align with the items order at var $2 .
6939 # die if an item at $1 is not at $2 .
6940 reorder_by(){
6941     eval rb_in=\$$1
6942     eval rb_ordered=\$$2
6943
6944     for rb in $rb_in; do
6945         is_in $rb $rb_ordered || die "$rb at \$$1 is not at \$$2"
6946     done
6947
6948     rb_out=
6949     for rb in $rb_ordered; do
6950         is_in $rb $rb_in && rb_out="$rb_out$rb "
6951     done
6952     eval $1=\$rb_out
6953 }
6954
6955 # deps-expand fflib $1:  N x {append all expanded deps; unique}
6956 # within a set of N items, N expansions are enough to expose a cycle.
6957 expand_deps(){
6958     unique ${1}_deps  # required for the early break test.
6959     for dummy in $LIBRARY_LIST; do  # N iteratios
6960         eval deps=\$${1}_deps
6961         append ${1}_deps $(map 'eval echo \$${v}_deps' $deps)
6962         unique ${1}_deps
6963         eval '[ ${#deps} = ${#'${1}_deps'} ]' && break  # doesn't expand anymore
6964     done
6965
6966     eval is_in $1 \$${1}_deps && die "Dependency cycle at ${1}_deps"
6967     reorder_by ${1}_deps LIBRARY_LIST  # linking order is expected later
6968 }
6969
6970 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6971 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6972
6973 map 'expand_deps $v' $LIBRARY_LIST
6974
6975 if test "$quiet" != "yes"; then
6976
6977 echo "install prefix            $prefix"
6978 echo "source path               $source_path"
6979 echo "C compiler                $cc"
6980 echo "C library                 $libc_type"
6981 if test "$host_cc" != "$cc"; then
6982     echo "host C compiler           $host_cc"
6983     echo "host C library            $host_libc_type"
6984 fi
6985 echo "ARCH                      $arch ($cpu)"
6986 if test "$build_suffix" != ""; then
6987     echo "build suffix              $build_suffix"
6988 fi
6989 if test "$progs_suffix" != ""; then
6990     echo "progs suffix              $progs_suffix"
6991 fi
6992 if test "$extra_version" != ""; then
6993     echo "version string suffix     $extra_version"
6994 fi
6995 echo "big-endian                ${bigendian-no}"
6996 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6997 if enabled x86; then
6998     echo "standalone assembly       ${x86asm-no}"
6999     echo "x86 assembler             ${x86asmexe}"
7000     echo "MMX enabled               ${mmx-no}"
7001     echo "MMXEXT enabled            ${mmxext-no}"
7002     echo "3DNow! enabled            ${amd3dnow-no}"
7003     echo "3DNow! extended enabled   ${amd3dnowext-no}"
7004     echo "SSE enabled               ${sse-no}"
7005     echo "SSSE3 enabled             ${ssse3-no}"
7006     echo "AESNI enabled             ${aesni-no}"
7007     echo "AVX enabled               ${avx-no}"
7008     echo "AVX2 enabled              ${avx2-no}"
7009     echo "AVX-512 enabled           ${avx512-no}"
7010     echo "XOP enabled               ${xop-no}"
7011     echo "FMA3 enabled              ${fma3-no}"
7012     echo "FMA4 enabled              ${fma4-no}"
7013     echo "i686 features enabled     ${i686-no}"
7014     echo "CMOV is fast              ${fast_cmov-no}"
7015     echo "EBX available             ${ebx_available-no}"
7016     echo "EBP available             ${ebp_available-no}"
7017 fi
7018 if enabled aarch64; then
7019     echo "NEON enabled              ${neon-no}"
7020     echo "VFP enabled               ${vfp-no}"
7021 fi
7022 if enabled arm; then
7023     echo "ARMv5TE enabled           ${armv5te-no}"
7024     echo "ARMv6 enabled             ${armv6-no}"
7025     echo "ARMv6T2 enabled           ${armv6t2-no}"
7026     echo "VFP enabled               ${vfp-no}"
7027     echo "NEON enabled              ${neon-no}"
7028     echo "THUMB enabled             ${thumb-no}"
7029 fi
7030 if enabled mips; then
7031     echo "MIPS FPU enabled          ${mipsfpu-no}"
7032     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
7033     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
7034     echo "MIPS MSA enabled          ${msa-no}"
7035     echo "LOONGSON MMI enabled      ${mmi-no}"
7036 fi
7037 if enabled ppc; then
7038     echo "AltiVec enabled           ${altivec-no}"
7039     echo "VSX enabled               ${vsx-no}"
7040     echo "POWER8 enabled            ${power8-no}"
7041     echo "PPC 4xx optimizations     ${ppc4xx-no}"
7042     echo "dcbzl available           ${dcbzl-no}"
7043 fi
7044 echo "debug symbols             ${debug-no}"
7045 echo "strip symbols             ${stripping-no}"
7046 echo "optimize for size         ${small-no}"
7047 echo "optimizations             ${optimizations-no}"
7048 echo "static                    ${static-no}"
7049 echo "shared                    ${shared-no}"
7050 echo "postprocessing support    ${postproc-no}"
7051 echo "network support           ${network-no}"
7052 echo "threading support         ${thread_type-no}"
7053 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
7054 echo "texi2html enabled         ${texi2html-no}"
7055 echo "perl enabled              ${perl-no}"
7056 echo "pod2man enabled           ${pod2man-no}"
7057 echo "makeinfo enabled          ${makeinfo-no}"
7058 echo "makeinfo supports HTML    ${makeinfo_html-no}"
7059 test -n "$random_seed" &&
7060     echo "random seed               ${random_seed}"
7061 echo
7062
7063 echo "External libraries:"
7064 print_enabled '' $EXTERNAL_LIBRARY_LIST $EXTERNAL_AUTODETECT_LIBRARY_LIST | print_in_columns
7065 echo
7066
7067 echo "External libraries providing hardware acceleration:"
7068 print_enabled '' $HWACCEL_LIBRARY_LIST $HWACCEL_AUTODETECT_LIBRARY_LIST | print_in_columns
7069 echo
7070
7071 echo "Libraries:"
7072 print_enabled '' $LIBRARY_LIST | print_in_columns
7073 echo
7074
7075 echo "Programs:"
7076 print_enabled '' $PROGRAM_LIST | print_in_columns
7077 echo
7078
7079 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
7080     echo "Enabled ${type}s:"
7081     eval list=\$$(toupper $type)_LIST
7082     print_enabled '_*' $list | print_in_columns
7083     echo
7084 done
7085
7086 if test -n "$ignore_tests"; then
7087     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
7088     echo "Ignored FATE tests:"
7089     echo $ignore_tests | print_in_columns
7090     echo
7091 fi
7092
7093 echo "License: $license"
7094
7095 fi # test "$quiet" != "yes"
7096
7097 if test -n "$WARNINGS"; then
7098     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
7099     enabled fatal_warnings && exit 1
7100 fi
7101
7102 test -e Makefile || echo "include $source_path/Makefile" > Makefile
7103
7104 esc(){
7105     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
7106 }
7107
7108 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
7109
7110 enabled stripping || strip="echo skipping strip"
7111 enabled stripping || striptype=""
7112
7113 config_files="$TMPH ffbuild/config.mak doc/config.texi"
7114
7115 cat > ffbuild/config.mak <<EOF
7116 # Automatically generated by configure - do not modify!
7117 ifndef FFMPEG_CONFIG_MAK
7118 FFMPEG_CONFIG_MAK=1
7119 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
7120 prefix=$prefix
7121 LIBDIR=\$(DESTDIR)$libdir
7122 SHLIBDIR=\$(DESTDIR)$shlibdir
7123 INCDIR=\$(DESTDIR)$incdir
7124 BINDIR=\$(DESTDIR)$bindir
7125 DATADIR=\$(DESTDIR)$datadir
7126 DOCDIR=\$(DESTDIR)$docdir
7127 MANDIR=\$(DESTDIR)$mandir
7128 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
7129 INSTALL_NAME_DIR=$install_name_dir
7130 SRC_PATH=$source_path
7131 SRC_LINK=$source_link
7132 ifndef MAIN_MAKEFILE
7133 SRC_PATH:=\$(SRC_PATH:.%=..%)
7134 endif
7135 CC_IDENT=$cc_ident
7136 ARCH=$arch
7137 INTRINSICS=$intrinsics
7138 EXTERN_PREFIX=$extern_prefix
7139 CC=$cc
7140 CXX=$cxx
7141 AS=$as
7142 OBJCC=$objcc
7143 LD=$ld
7144 DEPCC=$dep_cc
7145 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
7146 DEPAS=$as
7147 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
7148 X86ASM=$x86asmexe
7149 DEPX86ASM=$x86asmexe
7150 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
7151 AR=$ar
7152 ARFLAGS=$arflags
7153 AR_O=$ar_o
7154 AR_CMD=$ar
7155 NM_CMD=$nm
7156 RANLIB=$ranlib
7157 STRIP=$strip
7158 STRIPTYPE=$striptype
7159 NVCC=$nvcc
7160 CP=cp -p
7161 LN_S=$ln_s
7162 CPPFLAGS=$CPPFLAGS
7163 CFLAGS=$CFLAGS
7164 CXXFLAGS=$CXXFLAGS
7165 OBJCFLAGS=$OBJCFLAGS
7166 ASFLAGS=$ASFLAGS
7167 NVCCFLAGS=$nvccflags
7168 AS_C=$AS_C
7169 AS_O=$AS_O
7170 OBJCC_C=$OBJCC_C
7171 OBJCC_E=$OBJCC_E
7172 OBJCC_O=$OBJCC_O
7173 CC_C=$CC_C
7174 CC_E=$CC_E
7175 CC_O=$CC_O
7176 CXX_C=$CXX_C
7177 CXX_O=$CXX_O
7178 NVCC_C=$NVCC_C
7179 NVCC_O=$NVCC_O
7180 LD_O=$LD_O
7181 X86ASM_O=$X86ASM_O
7182 LD_LIB=$LD_LIB
7183 LD_PATH=$LD_PATH
7184 DLLTOOL=$dlltool
7185 WINDRES=$windres
7186 DEPWINDRES=$dep_cc
7187 DOXYGEN=$doxygen
7188 LDFLAGS=$LDFLAGS
7189 LDEXEFLAGS=$LDEXEFLAGS
7190 LDSOFLAGS=$LDSOFLAGS
7191 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
7192 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
7193 X86ASMFLAGS=$X86ASMFLAGS
7194 BUILDSUF=$build_suffix
7195 PROGSSUF=$progs_suffix
7196 FULLNAME=$FULLNAME
7197 LIBPREF=$LIBPREF
7198 LIBSUF=$LIBSUF
7199 LIBNAME=$LIBNAME
7200 SLIBPREF=$SLIBPREF
7201 SLIBSUF=$SLIBSUF
7202 EXESUF=$EXESUF
7203 EXTRA_VERSION=$extra_version
7204 CCDEP=$CCDEP
7205 CXXDEP=$CXXDEP
7206 CCDEP_FLAGS=$CCDEP_FLAGS
7207 ASDEP=$ASDEP
7208 ASDEP_FLAGS=$ASDEP_FLAGS
7209 X86ASMDEP=$X86ASMDEP
7210 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
7211 CC_DEPFLAGS=$CC_DEPFLAGS
7212 AS_DEPFLAGS=$AS_DEPFLAGS
7213 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
7214 HOSTCC=$host_cc
7215 HOSTLD=$host_ld
7216 HOSTCFLAGS=$host_cflags
7217 HOSTCPPFLAGS=$host_cppflags
7218 HOSTEXESUF=$HOSTEXESUF
7219 HOSTLDFLAGS=$host_ldflags
7220 HOSTEXTRALIBS=$host_extralibs
7221 DEPHOSTCC=$host_cc
7222 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
7223 HOSTCCDEP=$HOSTCCDEP
7224 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
7225 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
7226 HOSTCC_C=$HOSTCC_C
7227 HOSTCC_O=$HOSTCC_O
7228 HOSTLD_O=$HOSTLD_O
7229 TARGET_EXEC=$target_exec $target_exec_args
7230 TARGET_PATH=$target_path
7231 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
7232 CFLAGS-ffplay=${sdl2_cflags}
7233 CFLAGS_HEADERS=$CFLAGS_HEADERS
7234 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
7235 EXTRALIBS=$extralibs
7236 COMPAT_OBJS=$compat_objs
7237 INSTALL=$install
7238 LIBTARGET=${LIBTARGET}
7239 SLIBNAME=${SLIBNAME}
7240 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
7241 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
7242 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
7243 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
7244 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
7245 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
7246 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
7247 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
7248 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
7249 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
7250 NOREDZONE_FLAGS=$noredzone_flags
7251 LIBFUZZER_PATH=$libfuzzer_path
7252 IGNORE_TESTS=$ignore_tests
7253 EOF
7254
7255 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
7256
7257 for entry in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
7258     eval echo "EXTRALIBS-${entry}=\$${entry}_extralibs" >> ffbuild/config.mak
7259 done
7260
7261 cat > $TMPH <<EOF
7262 /* Automatically generated by configure - do not modify! */
7263 #ifndef FFMPEG_CONFIG_H
7264 #define FFMPEG_CONFIG_H
7265 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
7266 #define FFMPEG_LICENSE "$(c_escape $license)"
7267 #define CONFIG_THIS_YEAR 2018
7268 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
7269 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
7270 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
7271 #define av_restrict $restrict_keyword
7272 #define EXTERN_PREFIX "${extern_prefix}"
7273 #define EXTERN_ASM ${extern_prefix}
7274 #define BUILDSUF "$build_suffix"
7275 #define SLIBSUF "$SLIBSUF"
7276 #define HAVE_MMX2 HAVE_MMXEXT
7277 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
7278 EOF
7279
7280 test -n "$assert_level" &&
7281     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
7282
7283 test -n "$malloc_prefix" &&
7284     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
7285
7286 if enabled x86asm; then
7287     append config_files $TMPASM
7288     cat > $TMPASM <<EOF
7289 ; Automatically generated by configure - do not modify!
7290 EOF
7291 fi
7292
7293 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
7294
7295
7296 mkdir -p doc
7297 mkdir -p tests
7298 mkdir -p tests/api
7299 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
7300
7301 print_config ARCH_   "$config_files" $ARCH_LIST
7302 print_config HAVE_   "$config_files" $HAVE_LIST
7303 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
7304                                      $CONFIG_EXTRA      \
7305                                      $ALL_COMPONENTS    \
7306
7307 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
7308 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
7309
7310 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
7311 cp_if_changed $TMPH config.h
7312 touch ffbuild/.config
7313
7314 enabled x86asm && cp_if_changed $TMPASM config.asm
7315
7316 cat > $TMPH <<EOF
7317 /* Generated by ffmpeg configure */
7318 #ifndef AVUTIL_AVCONFIG_H
7319 #define AVUTIL_AVCONFIG_H
7320 EOF
7321
7322 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
7323
7324 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
7325
7326 cp_if_changed $TMPH libavutil/avconfig.h
7327
7328 # full_filter_name_foo=vf_foo
7329 # full_filter_name_bar=asrc_bar
7330 # ...
7331 eval "$(sed -n "s/^extern AVFilter ff_\([avfsinkrc]\{2,5\}\)_\(.*\);/full_filter_name_\2=\1_\2/p" $source_path/libavfilter/allfilters.c)"
7332
7333 # generate the lists of enabled components
7334 print_enabled_components(){
7335     file=$1
7336     struct_name=$2
7337     name=$3
7338     shift 3
7339     echo "static const $struct_name * const $name[] = {" > $TMPH
7340     for c in $*; do
7341         if enabled $c; then
7342             case $name in
7343                 filter_list)
7344                     eval c=\$full_filter_name_${c%_filter}
7345                 ;;
7346                 indev_list)
7347                     c=${c%_indev}_demuxer
7348                 ;;
7349                 outdev_list)
7350                     c=${c%_outdev}_muxer
7351                 ;;
7352             esac
7353             printf "    &ff_%s,\n" $c >> $TMPH
7354         fi
7355     done
7356     if [ "$name" = "filter_list" ]; then
7357         for c in asrc_abuffer vsrc_buffer asink_abuffer vsink_buffer; do
7358             printf "    &ff_%s,\n" $c >> $TMPH
7359         done
7360     fi
7361     echo "    NULL };" >> $TMPH
7362     cp_if_changed $TMPH $file
7363 }
7364
7365 print_enabled_components libavfilter/filter_list.c AVFilter filter_list $FILTER_LIST
7366 print_enabled_components libavcodec/codec_list.c AVCodec codec_list $CODEC_LIST
7367 print_enabled_components libavcodec/parser_list.c AVCodecParser parser_list $PARSER_LIST
7368 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
7369 print_enabled_components libavformat/demuxer_list.c AVInputFormat demuxer_list $DEMUXER_LIST
7370 print_enabled_components libavformat/muxer_list.c AVOutputFormat muxer_list $MUXER_LIST
7371 print_enabled_components libavdevice/indev_list.c AVInputFormat indev_list $INDEV_LIST
7372 print_enabled_components libavdevice/outdev_list.c AVOutputFormat outdev_list $OUTDEV_LIST
7373 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
7374
7375 # Settings for pkg-config files
7376
7377 cat > $TMPH <<EOF
7378 # Automatically generated by configure - do not modify!
7379 shared=$shared
7380 build_suffix=$build_suffix
7381 prefix=$prefix
7382 libdir=$libdir
7383 incdir=$incdir
7384 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
7385 source_path=${source_path}
7386 LIBPREF=${LIBPREF}
7387 LIBSUF=${LIBSUF}
7388 extralibs_avutil="$avutil_extralibs"
7389 extralibs_avcodec="$avcodec_extralibs"
7390 extralibs_avformat="$avformat_extralibs"
7391 extralibs_avdevice="$avdevice_extralibs"
7392 extralibs_avfilter="$avfilter_extralibs"
7393 extralibs_avresample="$avresample_extralibs"
7394 extralibs_postproc="$postproc_extralibs"
7395 extralibs_swscale="$swscale_extralibs"
7396 extralibs_swresample="$swresample_extralibs"
7397 EOF
7398
7399 for lib in $LIBRARY_LIST; do
7400     lib_deps="$(eval echo \$${lib}_deps)"
7401     echo ${lib}_deps=\"$lib_deps\" >> $TMPH
7402 done
7403
7404 cp_if_changed $TMPH ffbuild/config.sh