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 vp9_metadata_bsf_select="cbs_vp9"
3050
3051 # external libraries
3052 aac_at_decoder_deps="audiotoolbox"
3053 aac_at_decoder_select="aac_adtstoasc_bsf"
3054 ac3_at_decoder_deps="audiotoolbox"
3055 ac3_at_decoder_select="ac3_parser"
3056 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
3057 alac_at_decoder_deps="audiotoolbox"
3058 amr_nb_at_decoder_deps="audiotoolbox"
3059 avisynth_deps_any="libdl LoadLibrary"
3060 avisynth_demuxer_deps="avisynth"
3061 avisynth_demuxer_select="riffdec"
3062 eac3_at_decoder_deps="audiotoolbox"
3063 eac3_at_decoder_select="ac3_parser"
3064 gsm_ms_at_decoder_deps="audiotoolbox"
3065 ilbc_at_decoder_deps="audiotoolbox"
3066 mp1_at_decoder_deps="audiotoolbox"
3067 mp2_at_decoder_deps="audiotoolbox"
3068 mp3_at_decoder_deps="audiotoolbox"
3069 mp1_at_decoder_select="mpegaudioheader"
3070 mp2_at_decoder_select="mpegaudioheader"
3071 mp3_at_decoder_select="mpegaudioheader"
3072 pcm_alaw_at_decoder_deps="audiotoolbox"
3073 pcm_mulaw_at_decoder_deps="audiotoolbox"
3074 qdmc_at_decoder_deps="audiotoolbox"
3075 qdm2_at_decoder_deps="audiotoolbox"
3076 aac_at_encoder_deps="audiotoolbox"
3077 aac_at_encoder_select="audio_frame_queue"
3078 alac_at_encoder_deps="audiotoolbox"
3079 alac_at_encoder_select="audio_frame_queue"
3080 ilbc_at_encoder_deps="audiotoolbox"
3081 ilbc_at_encoder_select="audio_frame_queue"
3082 pcm_alaw_at_encoder_deps="audiotoolbox"
3083 pcm_alaw_at_encoder_select="audio_frame_queue"
3084 pcm_mulaw_at_encoder_deps="audiotoolbox"
3085 pcm_mulaw_at_encoder_select="audio_frame_queue"
3086 chromaprint_muxer_deps="chromaprint"
3087 h264_videotoolbox_encoder_deps="pthreads"
3088 h264_videotoolbox_encoder_select="videotoolbox_encoder"
3089 hevc_videotoolbox_encoder_deps="pthreads"
3090 hevc_videotoolbox_encoder_select="videotoolbox_encoder"
3091 libaom_av1_decoder_deps="libaom"
3092 libaom_av1_encoder_deps="libaom"
3093 libaom_av1_encoder_select="extract_extradata_bsf"
3094 libcelt_decoder_deps="libcelt"
3095 libcodec2_decoder_deps="libcodec2"
3096 libcodec2_encoder_deps="libcodec2"
3097 libdav1d_decoder_deps="libdav1d"
3098 libdavs2_decoder_deps="libdavs2"
3099 libfdk_aac_decoder_deps="libfdk_aac"
3100 libfdk_aac_encoder_deps="libfdk_aac"
3101 libfdk_aac_encoder_select="audio_frame_queue"
3102 libgme_demuxer_deps="libgme"
3103 libgsm_decoder_deps="libgsm"
3104 libgsm_encoder_deps="libgsm"
3105 libgsm_ms_decoder_deps="libgsm"
3106 libgsm_ms_encoder_deps="libgsm"
3107 libilbc_decoder_deps="libilbc"
3108 libilbc_encoder_deps="libilbc"
3109 libkvazaar_encoder_deps="libkvazaar"
3110 libmodplug_demuxer_deps="libmodplug"
3111 libmp3lame_encoder_deps="libmp3lame"
3112 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
3113 libopencore_amrnb_decoder_deps="libopencore_amrnb"
3114 libopencore_amrnb_encoder_deps="libopencore_amrnb"
3115 libopencore_amrnb_encoder_select="audio_frame_queue"
3116 libopencore_amrwb_decoder_deps="libopencore_amrwb"
3117 libopenh264_decoder_deps="libopenh264"
3118 libopenh264_decoder_select="h264_mp4toannexb_bsf"
3119 libopenh264_encoder_deps="libopenh264"
3120 libopenjpeg_decoder_deps="libopenjpeg"
3121 libopenjpeg_encoder_deps="libopenjpeg"
3122 libopenmpt_demuxer_deps="libopenmpt"
3123 libopus_decoder_deps="libopus"
3124 libopus_encoder_deps="libopus"
3125 libopus_encoder_select="audio_frame_queue"
3126 librsvg_decoder_deps="librsvg"
3127 libshine_encoder_deps="libshine"
3128 libshine_encoder_select="audio_frame_queue"
3129 libspeex_decoder_deps="libspeex"
3130 libspeex_encoder_deps="libspeex"
3131 libspeex_encoder_select="audio_frame_queue"
3132 libtheora_encoder_deps="libtheora"
3133 libtwolame_encoder_deps="libtwolame"
3134 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
3135 libvorbis_decoder_deps="libvorbis"
3136 libvorbis_encoder_deps="libvorbis libvorbisenc"
3137 libvorbis_encoder_select="audio_frame_queue"
3138 libvpx_vp8_decoder_deps="libvpx"
3139 libvpx_vp8_encoder_deps="libvpx"
3140 libvpx_vp9_decoder_deps="libvpx"
3141 libvpx_vp9_encoder_deps="libvpx"
3142 libwavpack_encoder_deps="libwavpack"
3143 libwavpack_encoder_select="audio_frame_queue"
3144 libwebp_encoder_deps="libwebp"
3145 libwebp_anim_encoder_deps="libwebp"
3146 libx262_encoder_deps="libx262"
3147 libx264_encoder_deps="libx264"
3148 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
3149 libx264rgb_encoder_select="libx264_encoder"
3150 libx265_encoder_deps="libx265"
3151 libxavs_encoder_deps="libxavs"
3152 libxavs2_encoder_deps="libxavs2"
3153 libxvid_encoder_deps="libxvid"
3154 libzvbi_teletext_decoder_deps="libzvbi"
3155 vapoursynth_demuxer_deps="vapoursynth"
3156 videotoolbox_suggest="coreservices"
3157 videotoolbox_deps="corefoundation coremedia corevideo"
3158 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
3159
3160 # demuxers / muxers
3161 ac3_demuxer_select="ac3_parser"
3162 aiff_muxer_select="iso_media"
3163 asf_demuxer_select="riffdec"
3164 asf_o_demuxer_select="riffdec"
3165 asf_muxer_select="riffenc"
3166 asf_stream_muxer_select="asf_muxer"
3167 avi_demuxer_select="iso_media riffdec exif"
3168 avi_muxer_select="riffenc"
3169 caf_demuxer_select="iso_media riffdec"
3170 caf_muxer_select="iso_media"
3171 dash_muxer_select="mp4_muxer"
3172 dash_demuxer_deps="libxml2"
3173 dirac_demuxer_select="dirac_parser"
3174 dts_demuxer_select="dca_parser"
3175 dtshd_demuxer_select="dca_parser"
3176 dv_demuxer_select="dvprofile"
3177 dv_muxer_select="dvprofile"
3178 dxa_demuxer_select="riffdec"
3179 eac3_demuxer_select="ac3_parser"
3180 f4v_muxer_select="mov_muxer"
3181 fifo_muxer_deps="threads"
3182 flac_demuxer_select="flac_parser"
3183 hds_muxer_select="flv_muxer"
3184 hls_muxer_select="mpegts_muxer"
3185 hls_muxer_suggest="gcrypt openssl"
3186 image2_alias_pix_demuxer_select="image2_demuxer"
3187 image2_brender_pix_demuxer_select="image2_demuxer"
3188 ipod_muxer_select="mov_muxer"
3189 ismv_muxer_select="mov_muxer"
3190 ivf_muxer_select="av1_metadata_bsf vp9_superframe_bsf"
3191 matroska_audio_muxer_select="matroska_muxer"
3192 matroska_demuxer_select="iso_media riffdec"
3193 matroska_demuxer_suggest="bzlib lzo zlib"
3194 matroska_muxer_select="iso_media riffenc"
3195 mmf_muxer_select="riffenc"
3196 mov_demuxer_select="iso_media riffdec"
3197 mov_demuxer_suggest="zlib"
3198 mov_muxer_select="iso_media riffenc rtpenc_chain"
3199 mp3_demuxer_select="mpegaudio_parser"
3200 mp3_muxer_select="mpegaudioheader"
3201 mp4_muxer_select="mov_muxer"
3202 mpegts_demuxer_select="iso_media"
3203 mpegts_muxer_select="adts_muxer latm_muxer"
3204 mpegtsraw_demuxer_select="mpegts_demuxer"
3205 mxf_d10_muxer_select="mxf_muxer"
3206 mxf_opatom_muxer_select="mxf_muxer"
3207 nut_muxer_select="riffenc"
3208 nuv_demuxer_select="riffdec"
3209 oga_muxer_select="ogg_muxer"
3210 ogg_demuxer_select="dirac_parse"
3211 ogv_muxer_select="ogg_muxer"
3212 opus_muxer_select="ogg_muxer"
3213 psp_muxer_select="mov_muxer"
3214 rtp_demuxer_select="sdp_demuxer"
3215 rtp_muxer_select="golomb"
3216 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3217 rtsp_demuxer_select="http_protocol rtpdec"
3218 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3219 sap_demuxer_select="sdp_demuxer"
3220 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3221 sdp_demuxer_select="rtpdec"
3222 smoothstreaming_muxer_select="ismv_muxer"
3223 spdif_demuxer_select="adts_header"
3224 spdif_muxer_select="adts_header"
3225 spx_muxer_select="ogg_muxer"
3226 swf_demuxer_suggest="zlib"
3227 tak_demuxer_select="tak_parser"
3228 tg2_muxer_select="mov_muxer"
3229 tgp_muxer_select="mov_muxer"
3230 vobsub_demuxer_select="mpegps_demuxer"
3231 w64_demuxer_select="wav_demuxer"
3232 w64_muxer_select="wav_muxer"
3233 wav_demuxer_select="riffdec"
3234 wav_muxer_select="riffenc"
3235 webm_muxer_select="iso_media riffenc"
3236 webm_dash_manifest_demuxer_select="matroska_demuxer"
3237 wtv_demuxer_select="mpegts_demuxer riffdec"
3238 wtv_muxer_select="mpegts_muxer riffenc"
3239 xmv_demuxer_select="riffdec"
3240 xwma_demuxer_select="riffdec"
3241
3242 # indevs / outdevs
3243 android_camera_indev_deps="android camera2ndk mediandk pthreads"
3244 android_camera_indev_extralibs="-landroid -lcamera2ndk -lmediandk"
3245 alsa_indev_deps="alsa"
3246 alsa_outdev_deps="alsa"
3247 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3248 avfoundation_indev_suggest="coregraphics applicationservices"
3249 avfoundation_indev_extralibs="-framework Foundation"
3250 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3251 caca_outdev_deps="libcaca"
3252 decklink_deps_any="libdl LoadLibrary"
3253 decklink_indev_deps="decklink threads"
3254 decklink_indev_extralibs="-lstdc++"
3255 decklink_outdev_deps="decklink threads"
3256 decklink_outdev_suggest="libklvanc"
3257 decklink_outdev_extralibs="-lstdc++"
3258 libndi_newtek_indev_deps="libndi_newtek"
3259 libndi_newtek_indev_extralibs="-lndi"
3260 libndi_newtek_outdev_deps="libndi_newtek"
3261 libndi_newtek_outdev_extralibs="-lndi"
3262 dshow_indev_deps="IBaseFilter"
3263 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3264 fbdev_indev_deps="linux_fb_h"
3265 fbdev_outdev_deps="linux_fb_h"
3266 gdigrab_indev_deps="CreateDIBSection"
3267 gdigrab_indev_extralibs="-lgdi32"
3268 gdigrab_indev_select="bmp_decoder"
3269 iec61883_indev_deps="libiec61883"
3270 jack_indev_deps="libjack"
3271 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3272 kmsgrab_indev_deps="libdrm"
3273 lavfi_indev_deps="avfilter"
3274 libcdio_indev_deps="libcdio"
3275 libdc1394_indev_deps="libdc1394"
3276 openal_indev_deps="openal"
3277 opengl_outdev_deps="opengl"
3278 opengl_outdev_suggest="sdl2"
3279 oss_indev_deps_any="sys_soundcard_h"
3280 oss_outdev_deps_any="sys_soundcard_h"
3281 pulse_indev_deps="libpulse"
3282 pulse_outdev_deps="libpulse"
3283 sdl2_outdev_deps="sdl2"
3284 sndio_indev_deps="sndio"
3285 sndio_outdev_deps="sndio"
3286 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3287 v4l2_indev_suggest="libv4l2"
3288 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3289 v4l2_outdev_suggest="libv4l2"
3290 vfwcap_indev_deps="vfw32 vfwcap_defines"
3291 xcbgrab_indev_deps="libxcb"
3292 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3293 xv_outdev_deps="xlib"
3294
3295 # protocols
3296 async_protocol_deps="threads"
3297 bluray_protocol_deps="libbluray"
3298 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3299 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl mbedtls"
3300 ffrtmpcrypt_protocol_select="tcp_protocol"
3301 ffrtmphttp_protocol_conflict="librtmp_protocol"
3302 ffrtmphttp_protocol_select="http_protocol"
3303 ftp_protocol_select="tcp_protocol"
3304 gopher_protocol_select="network"
3305 http_protocol_select="tcp_protocol"
3306 http_protocol_suggest="zlib"
3307 httpproxy_protocol_select="tcp_protocol"
3308 httpproxy_protocol_suggest="zlib"
3309 https_protocol_select="tls_protocol"
3310 https_protocol_suggest="zlib"
3311 icecast_protocol_select="http_protocol"
3312 mmsh_protocol_select="http_protocol"
3313 mmst_protocol_select="network"
3314 rtmp_protocol_conflict="librtmp_protocol"
3315 rtmp_protocol_select="tcp_protocol"
3316 rtmp_protocol_suggest="zlib"
3317 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3318 rtmpe_protocol_suggest="zlib"
3319 rtmps_protocol_conflict="librtmp_protocol"
3320 rtmps_protocol_select="tls_protocol"
3321 rtmps_protocol_suggest="zlib"
3322 rtmpt_protocol_select="ffrtmphttp_protocol"
3323 rtmpt_protocol_suggest="zlib"
3324 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3325 rtmpte_protocol_suggest="zlib"
3326 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3327 rtmpts_protocol_suggest="zlib"
3328 rtp_protocol_select="udp_protocol"
3329 schannel_conflict="openssl gnutls libtls mbedtls"
3330 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3331 sctp_protocol_select="network"
3332 securetransport_conflict="openssl gnutls libtls mbedtls"
3333 srtp_protocol_select="rtp_protocol srtp"
3334 tcp_protocol_select="network"
3335 tls_protocol_deps_any="gnutls openssl schannel securetransport libtls mbedtls"
3336 tls_protocol_select="tcp_protocol"
3337 udp_protocol_select="network"
3338 udplite_protocol_select="network"
3339 unix_protocol_deps="sys_un_h"
3340 unix_protocol_select="network"
3341
3342 # external library protocols
3343 librtmp_protocol_deps="librtmp"
3344 librtmpe_protocol_deps="librtmp"
3345 librtmps_protocol_deps="librtmp"
3346 librtmpt_protocol_deps="librtmp"
3347 librtmpte_protocol_deps="librtmp"
3348 libsmbclient_protocol_deps="libsmbclient gplv3"
3349 libsrt_protocol_deps="libsrt"
3350 libsrt_protocol_select="network"
3351 libssh_protocol_deps="libssh"
3352 libtls_conflict="openssl gnutls mbedtls"
3353
3354 # filters
3355 afftdn_filter_deps="avcodec"
3356 afftdn_filter_select="fft"
3357 afftfilt_filter_deps="avcodec"
3358 afftfilt_filter_select="fft"
3359 afir_filter_deps="avcodec"
3360 afir_filter_select="fft"
3361 amovie_filter_deps="avcodec avformat"
3362 aresample_filter_deps="swresample"
3363 ass_filter_deps="libass"
3364 atempo_filter_deps="avcodec"
3365 atempo_filter_select="rdft"
3366 avgblur_opencl_filter_deps="opencl"
3367 azmq_filter_deps="libzmq"
3368 blackframe_filter_deps="gpl"
3369 bm3d_filter_deps="avcodec"
3370 bm3d_filter_select="dct"
3371 boxblur_filter_deps="gpl"
3372 boxblur_opencl_filter_deps="opencl gpl"
3373 bs2b_filter_deps="libbs2b"
3374 colormatrix_filter_deps="gpl"
3375 convolution_opencl_filter_deps="opencl"
3376 convolve_filter_deps="avcodec"
3377 convolve_filter_select="fft"
3378 coreimage_filter_deps="coreimage appkit"
3379 coreimage_filter_extralibs="-framework OpenGL"
3380 coreimagesrc_filter_deps="coreimage appkit"
3381 coreimagesrc_filter_extralibs="-framework OpenGL"
3382 cover_rect_filter_deps="avcodec avformat gpl"
3383 cropdetect_filter_deps="gpl"
3384 deconvolve_filter_deps="avcodec"
3385 deconvolve_filter_select="fft"
3386 deinterlace_qsv_filter_deps="libmfx"
3387 deinterlace_vaapi_filter_deps="vaapi"
3388 delogo_filter_deps="gpl"
3389 denoise_vaapi_filter_deps="vaapi"
3390 deshake_filter_select="pixelutils"
3391 dilation_opencl_filter_deps="opencl"
3392 drawtext_filter_deps="libfreetype"
3393 drawtext_filter_suggest="libfontconfig libfribidi"
3394 elbg_filter_deps="avcodec"
3395 eq_filter_deps="gpl"
3396 erosion_opencl_filter_deps="opencl"
3397 fftfilt_filter_deps="avcodec"
3398 fftfilt_filter_select="rdft"
3399 fftdnoiz_filter_deps="avcodec"
3400 fftdnoiz_filter_select="fft"
3401 find_rect_filter_deps="avcodec avformat gpl"
3402 firequalizer_filter_deps="avcodec"
3403 firequalizer_filter_select="rdft"
3404 flite_filter_deps="libflite"
3405 framerate_filter_select="scene_sad"
3406 frei0r_filter_deps="frei0r libdl"
3407 frei0r_src_filter_deps="frei0r libdl"
3408 fspp_filter_deps="gpl"
3409 geq_filter_deps="gpl"
3410 histeq_filter_deps="gpl"
3411 hqdn3d_filter_deps="gpl"
3412 interlace_filter_deps="gpl"
3413 kerndeint_filter_deps="gpl"
3414 ladspa_filter_deps="ladspa libdl"
3415 lensfun_filter_deps="liblensfun version3"
3416 lv2_filter_deps="lv2"
3417 mcdeint_filter_deps="avcodec gpl"
3418 movie_filter_deps="avcodec avformat"
3419 mpdecimate_filter_deps="gpl"
3420 mpdecimate_filter_select="pixelutils"
3421 minterpolate_filter_select="scene_sad"
3422 mptestsrc_filter_deps="gpl"
3423 negate_filter_deps="lut_filter"
3424 nnedi_filter_deps="gpl"
3425 ocr_filter_deps="libtesseract"
3426 ocv_filter_deps="libopencv"
3427 openclsrc_filter_deps="opencl"
3428 overlay_opencl_filter_deps="opencl"
3429 overlay_qsv_filter_deps="libmfx"
3430 overlay_qsv_filter_select="qsvvpp"
3431 owdenoise_filter_deps="gpl"
3432 pan_filter_deps="swresample"
3433 perspective_filter_deps="gpl"
3434 phase_filter_deps="gpl"
3435 pp7_filter_deps="gpl"
3436 pp_filter_deps="gpl postproc"
3437 prewitt_opencl_filter_deps="opencl"
3438 procamp_vaapi_filter_deps="vaapi"
3439 program_opencl_filter_deps="opencl"
3440 pullup_filter_deps="gpl"
3441 removelogo_filter_deps="avcodec avformat swscale"
3442 repeatfields_filter_deps="gpl"
3443 resample_filter_deps="avresample"
3444 roberts_opencl_filter_deps="opencl"
3445 rubberband_filter_deps="librubberband"
3446 sab_filter_deps="gpl swscale"
3447 scale2ref_filter_deps="swscale"
3448 scale_filter_deps="swscale"
3449 scale_qsv_filter_deps="libmfx"
3450 select_filter_select="scene_sad"
3451 sharpness_vaapi_filter_deps="vaapi"
3452 showcqt_filter_deps="avcodec avformat swscale"
3453 showcqt_filter_suggest="libfontconfig libfreetype"
3454 showcqt_filter_select="fft"
3455 showfreqs_filter_deps="avcodec"
3456 showfreqs_filter_select="fft"
3457 showspectrum_filter_deps="avcodec"
3458 showspectrum_filter_select="fft"
3459 showspectrumpic_filter_deps="avcodec"
3460 showspectrumpic_filter_select="fft"
3461 signature_filter_deps="gpl avcodec avformat"
3462 smartblur_filter_deps="gpl swscale"
3463 sobel_opencl_filter_deps="opencl"
3464 sofalizer_filter_deps="libmysofa avcodec"
3465 sofalizer_filter_select="fft"
3466 spectrumsynth_filter_deps="avcodec"
3467 spectrumsynth_filter_select="fft"
3468 spp_filter_deps="gpl avcodec"
3469 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3470 sr_filter_deps="avformat swscale"
3471 sr_filter_select="dnn"
3472 stereo3d_filter_deps="gpl"
3473 subtitles_filter_deps="avformat avcodec libass"
3474 super2xsai_filter_deps="gpl"
3475 pixfmts_super2xsai_test_deps="super2xsai_filter"
3476 tinterlace_filter_deps="gpl"
3477 tinterlace_merge_test_deps="tinterlace_filter"
3478 tinterlace_pad_test_deps="tinterlace_filter"
3479 tonemap_filter_deps="const_nan"
3480 tonemap_opencl_filter_deps="opencl const_nan"
3481 unsharp_opencl_filter_deps="opencl"
3482 uspp_filter_deps="gpl avcodec"
3483 vaguedenoiser_filter_deps="gpl"
3484 vidstabdetect_filter_deps="libvidstab"
3485 vidstabtransform_filter_deps="libvidstab"
3486 libvmaf_filter_deps="libvmaf pthreads"
3487 zmq_filter_deps="libzmq"
3488 zoompan_filter_deps="swscale"
3489 zscale_filter_deps="libzimg const_nan"
3490 scale_vaapi_filter_deps="vaapi"
3491 vpp_qsv_filter_deps="libmfx"
3492 vpp_qsv_filter_select="qsvvpp"
3493 yadif_cuda_filter_deps="cuda_sdk"
3494
3495 # examples
3496 avio_dir_cmd_deps="avformat avutil"
3497 avio_reading_deps="avformat avcodec avutil"
3498 decode_audio_example_deps="avcodec avutil"
3499 decode_video_example_deps="avcodec avutil"
3500 demuxing_decoding_example_deps="avcodec avformat avutil"
3501 encode_audio_example_deps="avcodec avutil"
3502 encode_video_example_deps="avcodec avutil"
3503 extract_mvs_example_deps="avcodec avformat avutil"
3504 filter_audio_example_deps="avfilter avutil"
3505 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3506 filtering_video_example_deps="avfilter avcodec avformat avutil"
3507 http_multiclient_example_deps="avformat avutil fork"
3508 hw_decode_example_deps="avcodec avformat avutil"
3509 metadata_example_deps="avformat avutil"
3510 muxing_example_deps="avcodec avformat avutil swscale"
3511 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3512 remuxing_example_deps="avcodec avformat avutil"
3513 resampling_audio_example_deps="avutil swresample"
3514 scaling_video_example_deps="avutil swscale"
3515 transcode_aac_example_deps="avcodec avformat swresample"
3516 transcoding_example_deps="avfilter avcodec avformat avutil"
3517 vaapi_encode_example_deps="avcodec avutil h264_vaapi_encoder"
3518 vaapi_transcode_example_deps="avcodec avformat avutil h264_vaapi_encoder"
3519
3520 # EXTRALIBS_LIST
3521 cpu_init_extralibs="pthreads_extralibs"
3522 cws2fws_extralibs="zlib_extralibs"
3523
3524 # libraries, in any order
3525 avcodec_deps="avutil"
3526 avcodec_suggest="libm"
3527 avcodec_select="null_bsf"
3528 avdevice_deps="avformat avcodec avutil"
3529 avdevice_suggest="libm"
3530 avfilter_deps="avutil"
3531 avfilter_suggest="libm"
3532 avformat_deps="avcodec avutil"
3533 avformat_suggest="libm network zlib"
3534 avresample_deps="avutil"
3535 avresample_suggest="libm"
3536 avutil_suggest="clock_gettime ffnvcodec libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia bcrypt"
3537 postproc_deps="avutil gpl"
3538 postproc_suggest="libm"
3539 swresample_deps="avutil"
3540 swresample_suggest="libm libsoxr"
3541 swscale_deps="avutil"
3542 swscale_suggest="libm"
3543
3544 avcodec_extralibs="pthreads_extralibs iconv_extralibs"
3545 avfilter_extralibs="pthreads_extralibs"
3546 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3547
3548 # programs
3549 ffmpeg_deps="avcodec avfilter avformat"
3550 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3551                null_filter
3552                trim_filter"
3553 ffmpeg_suggest="ole32 psapi shell32"
3554 ffplay_deps="avcodec avformat swscale swresample sdl2"
3555 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3556 ffplay_suggest="shell32"
3557 ffprobe_deps="avcodec avformat"
3558 ffprobe_suggest="shell32"
3559
3560 # documentation
3561 podpages_deps="perl"
3562 manpages_deps="perl pod2man"
3563 htmlpages_deps="perl"
3564 htmlpages_deps_any="makeinfo_html texi2html"
3565 txtpages_deps="perl makeinfo"
3566 doc_deps_any="manpages htmlpages podpages txtpages"
3567
3568 # default parameters
3569
3570 logfile="ffbuild/config.log"
3571
3572 # installation paths
3573 prefix_default="/usr/local"
3574 bindir_default='${prefix}/bin'
3575 datadir_default='${prefix}/share/ffmpeg'
3576 docdir_default='${prefix}/share/doc/ffmpeg'
3577 incdir_default='${prefix}/include'
3578 libdir_default='${prefix}/lib'
3579 mandir_default='${prefix}/share/man'
3580
3581 # toolchain
3582 ar_default="ar"
3583 cc_default="gcc"
3584 cxx_default="g++"
3585 host_cc_default="gcc"
3586 doxygen_default="doxygen"
3587 install="install"
3588 ln_s_default="ln -s -f"
3589 nm_default="nm -g"
3590 pkg_config_default=pkg-config
3591 ranlib_default="ranlib"
3592 strip_default="strip"
3593 version_script='--version-script'
3594 objformat="elf32"
3595 x86asmexe_default="nasm"
3596 windres_default="windres"
3597 nvcc_default="nvcc"
3598 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3599 striptype="direct"
3600
3601 # OS
3602 target_os_default=$(tolower $(uname -s))
3603 host_os=$target_os_default
3604
3605 # machine
3606 if test "$target_os_default" = aix; then
3607     arch_default=$(uname -p)
3608     strip_default="strip -X32_64"
3609 else
3610     arch_default=$(uname -m)
3611 fi
3612 cpu="generic"
3613 intrinsics="none"
3614
3615 # configurable options
3616 enable $PROGRAM_LIST
3617 enable $DOCUMENT_LIST
3618 enable $EXAMPLE_LIST
3619 enable $(filter_out avresample $LIBRARY_LIST)
3620 enable stripping
3621
3622 enable asm
3623 enable debug
3624 enable doc
3625 enable faan faandct faanidct
3626 enable optimizations
3627 enable runtime_cpudetect
3628 enable safe_bitstream_reader
3629 enable static
3630 enable swscale_alpha
3631 enable valgrind_backtrace
3632
3633 sws_max_filter_size_default=256
3634 set_default sws_max_filter_size
3635
3636 # internal components are enabled by default
3637 enable $EXTRALIBS_LIST
3638
3639 # Avoid external, non-system, libraries getting enabled by dependency resolution
3640 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3641
3642 # build settings
3643 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3644 LIBPREF="lib"
3645 LIBSUF=".a"
3646 FULLNAME='$(NAME)$(BUILDSUF)'
3647 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3648 SLIBPREF="lib"
3649 SLIBSUF=".so"
3650 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3651 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3652 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3653 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3654 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3655 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3656 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3657
3658 asflags_filter=echo
3659 cflags_filter=echo
3660 ldflags_filter=echo
3661
3662 AS_C='-c'
3663 AS_O='-o $@'
3664 CC_C='-c'
3665 CC_E='-E -o $@'
3666 CC_O='-o $@'
3667 CXX_C='-c'
3668 CXX_O='-o $@'
3669 OBJCC_C='-c'
3670 OBJCC_E='-E -o $@'
3671 OBJCC_O='-o $@'
3672 X86ASM_O='-o $@'
3673 LD_O='-o $@'
3674 LD_LIB='-l%'
3675 LD_PATH='-L'
3676 HOSTCC_C='-c'
3677 HOSTCC_E='-E -o $@'
3678 HOSTCC_O='-o $@'
3679 HOSTLD_O='-o $@'
3680 NVCC_C='-c'
3681 NVCC_O='-o $@'
3682
3683 host_extralibs='-lm'
3684 host_cflags_filter=echo
3685 host_ldflags_filter=echo
3686
3687 target_path='$(CURDIR)'
3688
3689 # since the object filename is not given with the -MM flag, the compiler
3690 # is only able to print the basename, and we must add the path ourselves
3691 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3692 DEPFLAGS='-MM'
3693
3694 mkdir -p ffbuild
3695
3696 # find source path
3697 if test -f configure; then
3698     source_path=.
3699 else
3700     source_path=$(cd $(dirname "$0"); pwd)
3701     case "$source_path" in
3702         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3703     esac
3704     test -e "$source_path/config.h" &&
3705         die "Out of tree builds are impossible with config.h in source dir."
3706 fi
3707
3708 for v in "$@"; do
3709     r=${v#*=}
3710     l=${v%"$r"}
3711     r=$(sh_quote "$r")
3712     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3713 done
3714
3715 find_things_extern(){
3716     thing=$1
3717     pattern=$2
3718     file=$source_path/$3
3719     out=${4:-$thing}
3720     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$out/p" "$file"
3721 }
3722
3723 find_filters_extern(){
3724     file=$source_path/$1
3725     #sed -n "s/^extern AVFilter ff_\([avfsinkrc]\{2,5\}\)_\(\w\+\);/\2_filter/p" $file
3726     sed -E -n "s/^extern AVFilter ff_([avfsinkrc]{2,5})_([a-zA-Z0-9_]+);/\2_filter/p" $file
3727 }
3728
3729 FILTER_LIST=$(find_filters_extern libavfilter/allfilters.c)
3730 OUTDEV_LIST=$(find_things_extern muxer AVOutputFormat libavdevice/alldevices.c outdev)
3731 INDEV_LIST=$(find_things_extern demuxer AVInputFormat libavdevice/alldevices.c indev)
3732 MUXER_LIST=$(find_things_extern muxer AVOutputFormat libavformat/allformats.c)
3733 DEMUXER_LIST=$(find_things_extern demuxer AVInputFormat libavformat/allformats.c)
3734 ENCODER_LIST=$(find_things_extern encoder AVCodec libavcodec/allcodecs.c)
3735 DECODER_LIST=$(find_things_extern decoder AVCodec libavcodec/allcodecs.c)
3736 CODEC_LIST="
3737     $ENCODER_LIST
3738     $DECODER_LIST
3739 "
3740 PARSER_LIST=$(find_things_extern parser AVCodecParser libavcodec/parsers.c)
3741 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3742 HWACCEL_LIST=$(find_things_extern hwaccel AVHWAccel libavcodec/hwaccels.h)
3743 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3744
3745 AVCODEC_COMPONENTS_LIST="
3746     $BSF_LIST
3747     $DECODER_LIST
3748     $ENCODER_LIST
3749     $HWACCEL_LIST
3750     $PARSER_LIST
3751 "
3752
3753 AVDEVICE_COMPONENTS_LIST="
3754     $INDEV_LIST
3755     $OUTDEV_LIST
3756 "
3757
3758 AVFILTER_COMPONENTS_LIST="
3759     $FILTER_LIST
3760 "
3761
3762 AVFORMAT_COMPONENTS_LIST="
3763     $DEMUXER_LIST
3764     $MUXER_LIST
3765     $PROTOCOL_LIST
3766 "
3767
3768 ALL_COMPONENTS="
3769     $AVCODEC_COMPONENTS_LIST
3770     $AVDEVICE_COMPONENTS_LIST
3771     $AVFILTER_COMPONENTS_LIST
3772     $AVFORMAT_COMPONENTS_LIST
3773 "
3774
3775 for n in $COMPONENT_LIST; do
3776     v=$(toupper ${n%s})_LIST
3777     eval enable \$$v
3778     eval ${n}_if_any="\$$v"
3779 done
3780
3781 enable $ARCH_EXT_LIST
3782
3783 die_unknown(){
3784     echo "Unknown option \"$1\"."
3785     echo "See $0 --help for available options."
3786     exit 1
3787 }
3788
3789 print_in_columns() {
3790     cols=$(expr $ncols / 24)
3791     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3792 }
3793
3794 show_list() {
3795     suffix=_$1
3796     shift
3797     echo $* | sed s/$suffix//g | print_in_columns
3798     exit 0
3799 }
3800
3801 rand_list(){
3802     IFS=', '
3803     set -- $*
3804     unset IFS
3805     for thing; do
3806         comp=${thing%:*}
3807         prob=${thing#$comp}
3808         prob=${prob#:}
3809         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3810         echo "prob ${prob:-0.5}"
3811         printf '%s\n' $comp
3812     done
3813 }
3814
3815 do_random(){
3816     action=$1
3817     shift
3818     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3819     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3820 }
3821
3822 for opt do
3823     optval="${opt#*=}"
3824     case "$opt" in
3825         --extra-ldflags=*)
3826             add_ldflags $optval
3827         ;;
3828         --extra-ldexeflags=*)
3829             add_ldexeflags $optval
3830         ;;
3831         --extra-ldsoflags=*)
3832             add_ldsoflags $optval
3833         ;;
3834         --extra-ldlibflags=*)
3835             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3836                  "removed in the future. Use --extra-ldsoflags instead."
3837             add_ldsoflags $optval
3838         ;;
3839         --extra-libs=*)
3840             add_extralibs $optval
3841         ;;
3842         --disable-devices)
3843             disable $INDEV_LIST $OUTDEV_LIST
3844         ;;
3845         --enable-debug=*)
3846             debuglevel="$optval"
3847         ;;
3848         --disable-programs)
3849             disable $PROGRAM_LIST
3850         ;;
3851         --disable-everything)
3852             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3853         ;;
3854         --disable-all)
3855             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3856             disable $LIBRARY_LIST $PROGRAM_LIST doc
3857             enable avutil
3858         ;;
3859         --enable-random|--disable-random)
3860             action=${opt%%-random}
3861             do_random ${action#--} $COMPONENT_LIST
3862         ;;
3863         --enable-random=*|--disable-random=*)
3864             action=${opt%%-random=*}
3865             do_random ${action#--} $optval
3866         ;;
3867         --enable-sdl)
3868             enable sdl2
3869         ;;
3870         --enable-*=*|--disable-*=*)
3871             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3872             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3873             eval list=\$$(toupper $thing)_LIST
3874             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3875             list=$(filter "$name" $list)
3876             [ "$list" = "" ] && warn "Option $opt did not match anything"
3877             $action $list
3878         ;;
3879         --enable-yasm|--disable-yasm)
3880             warn "The ${opt} option is only provided for compatibility and will be\n"\
3881                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3882             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3883         ;;
3884         --yasmexe=*)
3885             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3886                  "removed in the future. Use --x86asmexe instead."
3887             x86asmexe="$optval"
3888         ;;
3889         --enable-?*|--disable-?*)
3890             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3891             if is_in $option $COMPONENT_LIST; then
3892                 test $action = disable && action=unset
3893                 eval $action \$$(toupper ${option%s})_LIST
3894             elif is_in $option $CMDLINE_SELECT; then
3895                 $action $option
3896             else
3897                 die_unknown $opt
3898             fi
3899         ;;
3900         --list-*)
3901             NAME="${opt#--list-}"
3902             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3903             NAME=${NAME%s}
3904             eval show_list $NAME \$$(toupper $NAME)_LIST
3905         ;;
3906         --help|-h) show_help
3907         ;;
3908         --quiet|-q) quiet=yes
3909         ;;
3910         --fatal-warnings) enable fatal_warnings
3911         ;;
3912         --libfuzzer=*)
3913             libfuzzer_path="$optval"
3914         ;;
3915         *)
3916             optname="${opt%%=*}"
3917             optname="${optname#--}"
3918             optname=$(echo "$optname" | sed 's/-/_/g')
3919             if is_in $optname $CMDLINE_SET; then
3920                 eval $optname='$optval'
3921             elif is_in $optname $CMDLINE_APPEND; then
3922                 append $optname "$optval"
3923             else
3924                 die_unknown $opt
3925             fi
3926         ;;
3927     esac
3928 done
3929
3930 for e in $env; do
3931     eval "export $e"
3932 done
3933
3934 if disabled autodetect; then
3935
3936     # Unless iconv is explicitely disabled by the user, we still want to probe
3937     # for the iconv from the libc.
3938     disabled iconv || enable libc_iconv
3939
3940     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3941     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3942 fi
3943 # Mark specifically enabled, but normally autodetected libraries as requested.
3944 for lib in $AUTODETECT_LIBS; do
3945     enabled $lib && request $lib
3946 done
3947 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
3948 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3949 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3950
3951 disabled logging && logfile=/dev/null
3952
3953 # command line configuration sanity checks
3954
3955 # we need to build at least one lib type
3956 if ! enabled_any static shared; then
3957     cat <<EOF
3958 At least one library type must be built.
3959 Specify --enable-static to build the static libraries or --enable-shared to
3960 build the shared libraries as well. To only build the shared libraries specify
3961 --disable-static in addition to --enable-shared.
3962 EOF
3963     exit 1
3964 fi
3965
3966 die_license_disabled() {
3967     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3968 }
3969
3970 die_license_disabled_gpl() {
3971     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3972 }
3973
3974 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3975 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3976
3977 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3978 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3979
3980 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3981
3982 if enabled nonfree; then
3983     license="nonfree and unredistributable"
3984 elif enabled gplv3; then
3985     license="GPL version 3 or later"
3986 elif enabled lgplv3; then
3987     license="LGPL version 3 or later"
3988 elif enabled gpl; then
3989     license="GPL version 2 or later"
3990 else
3991     license="LGPL version 2.1 or later"
3992 fi
3993
3994 enabled_all gnutls openssl &&
3995     die "GnuTLS and OpenSSL must not be enabled at the same time."
3996
3997 enabled_all gnutls mbedtls &&
3998     die "GnuTLS and mbedTLS must not be enabled at the same time."
3999
4000 enabled_all openssl mbedtls &&
4001     die "OpenSSL and mbedTLS must not be enabled at the same time."
4002
4003 # Disable all the library-specific components if the library itself
4004 # is disabled, see AVCODEC_LIST and following _LIST variables.
4005
4006 disable_components(){
4007     disabled ${1} && disable $(
4008         eval components="\$$(toupper ${1})_COMPONENTS"
4009         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
4010     )
4011 }
4012
4013 map 'disable_components $v' $LIBRARY_LIST
4014
4015 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
4016 set >> $logfile
4017
4018 test -n "$valgrind" && toolchain="valgrind-memcheck"
4019
4020 enabled ossfuzz && ! echo $CFLAGS | grep -q -- "-fsanitize="  && ! echo $CFLAGS | grep -q -- "-fcoverage-mapping" &&{
4021     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
4022     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
4023 }
4024
4025 case "$toolchain" in
4026     *-asan)
4027         cc_default="${toolchain%-asan}"
4028         add_cflags  -fsanitize=address
4029         add_ldflags -fsanitize=address
4030     ;;
4031     *-msan)
4032         cc_default="${toolchain%-msan}"
4033         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
4034         add_ldflags -fsanitize=memory
4035     ;;
4036     *-tsan)
4037         cc_default="${toolchain%-tsan}"
4038         add_cflags  -fsanitize=thread
4039         add_ldflags -fsanitize=thread
4040         case "$toolchain" in
4041             gcc-tsan)
4042                 add_cflags  -fPIC
4043                 add_ldflags -fPIC
4044                 ;;
4045         esac
4046     ;;
4047     *-usan)
4048         cc_default="${toolchain%-usan}"
4049         add_cflags  -fsanitize=undefined
4050         add_ldflags -fsanitize=undefined
4051     ;;
4052     valgrind-*)
4053         target_exec_default="valgrind"
4054         case "$toolchain" in
4055             valgrind-massif)
4056                 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"
4057                 ;;
4058             valgrind-memcheck)
4059                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
4060                 ;;
4061         esac
4062     ;;
4063     msvc)
4064         # Check whether the current MSVC version needs the C99 converter.
4065         # From MSVC 2013 (compiler major version 18) onwards, it does actually
4066         # support enough of C99 to build ffmpeg. Default to the new
4067         # behaviour if the regexp was unable to match anything, since this
4068         # successfully parses the version number of existing supported
4069         # versions that require the converter (MSVC 2010 and 2012).
4070         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
4071         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
4072             cc_default="cl"
4073             cxx_default="cl"
4074         else
4075             die "Unsupported MSVC version (2013 or newer required)"
4076         fi
4077         ld_default="$source_path/compat/windows/mslink"
4078         nm_default="dumpbin -symbols"
4079         ar_default="lib"
4080         case "$arch" in
4081         aarch64|arm64)
4082             as_default="armasm64"
4083             ;;
4084         arm*)
4085             as_default="armasm"
4086             ;;
4087         esac
4088         target_os_default="win32"
4089         # Use a relative path for TMPDIR. This makes sure all the
4090         # ffconf temp files are written with a relative path, avoiding
4091         # issues with msys/win32 path conversion for MSVC parameters
4092         # such as -Fo<file> or -out:<file>.
4093         TMPDIR=.
4094     ;;
4095     icl)
4096         cc_default="icl"
4097         ld_default="xilink"
4098         nm_default="dumpbin -symbols"
4099         ar_default="xilib"
4100         target_os_default="win32"
4101         TMPDIR=.
4102     ;;
4103     gcov)
4104         add_cflags  -fprofile-arcs -ftest-coverage
4105         add_ldflags -fprofile-arcs -ftest-coverage
4106     ;;
4107     llvm-cov)
4108         add_cflags -fprofile-arcs -ftest-coverage
4109         add_ldflags --coverage
4110     ;;
4111     hardened)
4112         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
4113         add_cflags   -fno-strict-overflow -fstack-protector-all
4114         add_ldflags  -Wl,-z,relro -Wl,-z,now
4115         add_cflags   -fPIE
4116         add_ldexeflags -fPIE -pie
4117     ;;
4118     ?*)
4119         die "Unknown toolchain $toolchain"
4120     ;;
4121 esac
4122
4123 if test -n "$cross_prefix"; then
4124     test -n "$arch" && test -n "$target_os" ||
4125         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
4126     enable cross_compile
4127 fi
4128
4129 ar_default="${cross_prefix}${ar_default}"
4130 cc_default="${cross_prefix}${cc_default}"
4131 cxx_default="${cross_prefix}${cxx_default}"
4132 nm_default="${cross_prefix}${nm_default}"
4133 pkg_config_default="${cross_prefix}${pkg_config_default}"
4134 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
4135     ranlib_default="${cross_prefix}${ranlib_default} -D"
4136 else
4137     ranlib_default="${cross_prefix}${ranlib_default}"
4138 fi
4139 strip_default="${cross_prefix}${strip_default}"
4140 windres_default="${cross_prefix}${windres_default}"
4141
4142 sysinclude_default="${sysroot}/usr/include"
4143
4144 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
4145     target_exec target_os x86asmexe nvcc
4146 enabled cross_compile || host_cc_default=$cc
4147 set_default host_cc
4148
4149 pkg_config_fail_message=""
4150 if ! $pkg_config --version >/dev/null 2>&1; then
4151     warn "$pkg_config not found, library detection may fail."
4152     pkg_config=false
4153 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
4154     pkg_config_fail_message="
4155 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
4156 fi
4157
4158 if test $doxygen != $doxygen_default && \
4159   ! $doxygen --version >/dev/null 2>&1; then
4160     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
4161 fi
4162
4163 exesuf() {
4164     case $1 in
4165         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
4166     esac
4167 }
4168
4169 EXESUF=$(exesuf $target_os)
4170 HOSTEXESUF=$(exesuf $host_os)
4171
4172 # set temporary file name
4173 : ${TMPDIR:=$TEMPDIR}
4174 : ${TMPDIR:=$TMP}
4175 : ${TMPDIR:=/tmp}
4176
4177 if [ -n "$tempprefix" ] ; then
4178     mktemp(){
4179         tmpname="$tempprefix.${HOSTNAME}.${UID}"
4180         echo "$tmpname"
4181         mkdir "$tmpname"
4182     }
4183 elif ! test_cmd mktemp -u XXXXXX; then
4184     # simple replacement for missing mktemp
4185     # NOT SAFE FOR GENERAL USE
4186     mktemp(){
4187         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
4188         echo "$tmpname"
4189         mkdir "$tmpname"
4190     }
4191 fi
4192
4193 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
4194     die "Unable to create temporary directory in $TMPDIR."
4195
4196 tmpfile(){
4197     tmp="${FFTMPDIR}/test"$2
4198     (set -C; exec > $tmp) 2> /dev/null ||
4199         die "Unable to create temporary file in $FFTMPDIR."
4200     eval $1=$tmp
4201 }
4202
4203 trap 'rm -rf -- "$FFTMPDIR"' EXIT
4204 trap 'exit 2' INT
4205
4206 tmpfile TMPASM .asm
4207 tmpfile TMPC   .c
4208 tmpfile TMPCPP .cpp
4209 tmpfile TMPE   $EXESUF
4210 tmpfile TMPH   .h
4211 tmpfile TMPM   .m
4212 tmpfile TMPO   .o
4213 tmpfile TMPS   .S
4214 tmpfile TMPSH  .sh
4215 tmpfile TMPV   .ver
4216
4217 unset -f mktemp
4218
4219 chmod +x $TMPE
4220
4221 # make sure we can execute files in $TMPDIR
4222 cat > $TMPSH 2>> $logfile <<EOF
4223 #! /bin/sh
4224 EOF
4225 chmod +x $TMPSH >> $logfile 2>&1
4226 if ! $TMPSH >> $logfile 2>&1; then
4227     cat <<EOF
4228 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
4229 variable to another directory and make sure that it is not mounted noexec.
4230 EOF
4231     die "Sanity test failed."
4232 fi
4233
4234 armasm_flags(){
4235     for flag; do
4236         case $flag in
4237             # Filter out MSVC cl.exe options from cflags that shouldn't
4238             # be passed to gas-preprocessor
4239             -M[TD]*)                                            ;;
4240             *)                  echo $flag                      ;;
4241         esac
4242    done
4243 }
4244
4245 cparser_flags(){
4246     for flag; do
4247         case $flag in
4248             -Wno-switch)             echo -Wno-switch-enum ;;
4249             -Wno-format-zero-length) ;;
4250             -Wdisabled-optimization) ;;
4251             -Wno-pointer-sign)       echo -Wno-other ;;
4252             *)                       echo $flag ;;
4253         esac
4254     done
4255 }
4256
4257 msvc_common_flags(){
4258     for flag; do
4259         case $flag in
4260             # In addition to specifying certain flags under the compiler
4261             # specific filters, they must be specified here as well or else the
4262             # generic catch all at the bottom will print the original flag.
4263             -Wall)                ;;
4264             -Wextra)              ;;
4265             -std=c99)             ;;
4266             # Common flags
4267             -fomit-frame-pointer) ;;
4268             -g)                   echo -Z7 ;;
4269             -fno-math-errno)      ;;
4270             -fno-common)          ;;
4271             -fno-signed-zeros)    ;;
4272             -fPIC)                ;;
4273             -mthumb)              ;;
4274             -march=*)             ;;
4275             -lz)                  echo zlib.lib ;;
4276             -lx264)               echo libx264.lib ;;
4277             -lstdc++)             ;;
4278             -l*)                  echo ${flag#-l}.lib ;;
4279             -LARGEADDRESSAWARE)   echo $flag ;;
4280             -L*)                  echo -libpath:${flag#-L} ;;
4281             *)                    echo $flag ;;
4282         esac
4283     done
4284 }
4285
4286 msvc_flags(){
4287     msvc_common_flags "$@"
4288     for flag; do
4289         case $flag in
4290             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4291                                        -wd4554 ;;
4292             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4293                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4294                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4295                                        -wd4307 \
4296                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4297         esac
4298     done
4299 }
4300
4301 icl_flags(){
4302     msvc_common_flags "$@"
4303     for flag; do
4304         case $flag in
4305             # Despite what Intel's documentation says -Wall, which is supported
4306             # on Windows, does enable remarks so disable them here.
4307             -Wall)                echo $flag -Qdiag-disable:remark ;;
4308             -std=c99)             echo -Qstd=c99 ;;
4309             -flto)                echo -ipo ;;
4310         esac
4311     done
4312 }
4313
4314 icc_flags(){
4315     for flag; do
4316         case $flag in
4317             -flto)                echo -ipo ;;
4318             *)                    echo $flag ;;
4319         esac
4320     done
4321 }
4322
4323 suncc_flags(){
4324     for flag; do
4325         case $flag in
4326             -march=*|-mcpu=*)
4327                 case "${flag#*=}" in
4328                     native)                   echo -xtarget=native       ;;
4329                     v9|niagara)               echo -xarch=sparc          ;;
4330                     ultrasparc)               echo -xarch=sparcvis       ;;
4331                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4332                     i586|pentium)             echo -xchip=pentium        ;;
4333                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4334                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4335                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4336                     pentium4*)          echo -xtarget=pentium4           ;;
4337                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4338                     *-sse3)             echo -xarch=sse3                 ;;
4339                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4340                     bonnell)                   echo -xarch=ssse3         ;;
4341                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4342                     westmere)                  echo -xtarget=westmere    ;;
4343                     silvermont)                echo -xarch=sse4_2        ;;
4344                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4345                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4346                                                echo -xarch=avx           ;;
4347                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4348                     btver1)                    echo -xarch=amdsse4a      ;;
4349                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4350                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4351                     k8|opteron|athlon64|athlon-fx)
4352                                                echo -xarch=sse2a         ;;
4353                     athlon*)                   echo -xarch=pentium_proa  ;;
4354                 esac
4355                 ;;
4356             -std=c99)             echo -xc99              ;;
4357             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4358             -fPIC)                echo -KPIC -xcode=pic32 ;;
4359             -W*,*)                echo $flag              ;;
4360             -f*-*|-W*|-mimpure-text)                      ;;
4361             -shared)              echo -G                 ;;
4362             *)                    echo $flag              ;;
4363         esac
4364     done
4365 }
4366
4367 probe_cc(){
4368     pfx=$1
4369     _cc=$2
4370     first=$3
4371
4372     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4373     unset _ld_o _ldflags _ld_lib _ld_path
4374     unset _depflags _DEPCMD _DEPFLAGS
4375     _flags_filter=echo
4376
4377     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4378         true # no-op to avoid reading stdin in following checks
4379     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4380         _type=llvm_gcc
4381         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4382         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4383         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4384         _cflags_speed='-O3'
4385         _cflags_size='-Os'
4386     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4387         _type=gcc
4388         gcc_version=$($_cc --version | head -n1)
4389         gcc_basever=$($_cc -dumpversion)
4390         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4391         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4392         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4393         case $gcc_basever in
4394             2) ;;
4395             2.*) ;;
4396             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4397         esac
4398         if [ "$first" = true ]; then
4399             case $gcc_basever in
4400                 4.2*)
4401                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4402             esac
4403         fi
4404         _cflags_speed='-O3'
4405         _cflags_size='-Os'
4406     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4407         _type=icc
4408         _ident=$($_cc --version | head -n1)
4409         _depflags='-MMD'
4410         _cflags_speed='-O3'
4411         _cflags_size='-Os'
4412         _cflags_noopt='-O1'
4413         _flags_filter=icc_flags
4414     elif $_cc -v 2>&1 | grep -q xlc; then
4415         _type=xlc
4416         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4417         _cflags_speed='-O5'
4418         _cflags_size='-O5 -qcompact'
4419     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4420         test -d "$sysroot" || die "No valid sysroot specified."
4421         _type=armcc
4422         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4423         armcc_conf="$PWD/armcc.conf"
4424         $_cc --arm_linux_configure                 \
4425              --arm_linux_config_file="$armcc_conf" \
4426              --configure_sysroot="$sysroot"        \
4427              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4428              die "Error creating armcc configuration file."
4429         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4430         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4431         as_default="${cross_prefix}gcc"
4432         _depflags='-MMD'
4433         _cflags_speed='-O3'
4434         _cflags_size='-Os'
4435     elif $_cc -v 2>&1 | grep -q clang && ! $_cc -? > /dev/null 2>&1; then
4436         _type=clang
4437         _ident=$($_cc --version 2>/dev/null | head -n1)
4438         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4439         _cflags_speed='-O3'
4440         _cflags_size='-Oz'
4441     elif $_cc -V 2>&1 | grep -q Sun; then
4442         _type=suncc
4443         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4444         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4445         _DEPFLAGS='-xM1 -xc99'
4446         _ldflags='-std=c99'
4447         _cflags_speed='-O5'
4448         _cflags_size='-O5 -xspace'
4449         _flags_filter=suncc_flags
4450     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4451         _type=pathscale
4452         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4453         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4454         _cflags_speed='-O2'
4455         _cflags_size='-Os'
4456         _flags_filter='filter_out -Wdisabled-optimization'
4457     elif $_cc -v 2>&1 | grep -q Open64; then
4458         _type=open64
4459         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4460         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4461         _cflags_speed='-O2'
4462         _cflags_size='-Os'
4463         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4464     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4465         _type=armasm
4466         _ident=$($_cc | head -n1)
4467         # 4509: "This form of conditional instruction is deprecated"
4468         _flags="-nologo -ignore 4509"
4469         _flags_filter=armasm_flags
4470     elif $_cc 2>&1 | grep -q Intel; then
4471         _type=icl
4472         _ident=$($_cc 2>&1 | head -n1)
4473         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4474         # Not only is O3 broken on 13.x+ but it is slower on all previous
4475         # versions (tested) as well.
4476         _cflags_speed="-O2"
4477         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4478         if $_cc 2>&1 | grep -q Linker; then
4479             _ld_o='-out:$@'
4480         else
4481             _ld_o='-Fe$@'
4482         fi
4483         _cc_o='-Fo$@'
4484         _cc_e='-P'
4485         _flags_filter=icl_flags
4486         _ld_lib='lib%.a'
4487         _ld_path='-libpath:'
4488         # -Qdiag-error to make icl error when seeing certain unknown arguments
4489         _flags='-nologo -Qdiag-error:4044,10157'
4490         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4491         # with MSVC which enables it by default.
4492         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4493         disable stripping
4494     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4495         # lld can emulate multiple different linkers; in ms link.exe mode,
4496         # the -? parameter gives the help output which contains an identifyable
4497         # string, while it gives an error in other modes.
4498         _type=lld-link
4499         # The link.exe mode doesn't have a switch for getting the version,
4500         # but we can force it back to gnu mode and get the version from there.
4501         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4502         _ld_o='-out:$@'
4503         _flags_filter=msvc_flags
4504         _ld_lib='lib%.a'
4505         _ld_path='-libpath:'
4506     elif $_cc -nologo- 2>&1 | grep -q Microsoft || { $_cc -v 2>&1 | grep -q clang && $_cc -? > /dev/null 2>&1; }; then
4507         _type=msvc
4508         _ident=$($_cc 2>&1 | head -n1 | tr -d '\r')
4509         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4510         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4511         _cflags_speed="-O2"
4512         _cflags_size="-O1"
4513         _cflags_noopt="-O1"
4514         if $_cc -nologo- 2>&1 | grep -q Linker; then
4515             _ld_o='-out:$@'
4516         else
4517             _ld_o='-Fe$@'
4518         fi
4519         _cc_o='-Fo$@'
4520         _cc_e='-P -Fi$@'
4521         _flags_filter=msvc_flags
4522         _ld_lib='lib%.a'
4523         _ld_path='-libpath:'
4524         _flags='-nologo'
4525         disable stripping
4526     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4527         _type=cparser
4528         _ident=$($_cc --version | head -n1)
4529         _depflags='-MMD'
4530         _cflags_speed='-O4'
4531         _cflags_size='-O2'
4532         _flags_filter=cparser_flags
4533     fi
4534
4535     eval ${pfx}_type=\$_type
4536     eval ${pfx}_ident=\$_ident
4537 }
4538
4539 set_ccvars(){
4540     eval ${1}_C=\${_cc_c-\${${1}_C}}
4541     eval ${1}_E=\${_cc_e-\${${1}_E}}
4542     eval ${1}_O=\${_cc_o-\${${1}_O}}
4543
4544     if [ -n "$_depflags" ]; then
4545         eval ${1}_DEPFLAGS=\$_depflags
4546     else
4547         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4548         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4549         eval DEP${1}FLAGS=\$_flags
4550     fi
4551 }
4552
4553 probe_cc cc "$cc" "true"
4554 cflags_filter=$_flags_filter
4555 cflags_speed=$_cflags_speed
4556 cflags_size=$_cflags_size
4557 cflags_noopt=$_cflags_noopt
4558 add_cflags $_flags $_cflags
4559 cc_ldflags=$_ldflags
4560 set_ccvars CC
4561 set_ccvars CXX
4562
4563 probe_cc hostcc "$host_cc"
4564 host_cflags_filter=$_flags_filter
4565 host_cflags_speed=$_cflags_speed
4566 add_host_cflags  $_flags $_cflags
4567 set_ccvars HOSTCC
4568
4569 test -n "$cc_type" && enable $cc_type ||
4570     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4571
4572 : ${as_default:=$cc}
4573 : ${objcc_default:=$cc}
4574 : ${dep_cc_default:=$cc}
4575 : ${ld_default:=$cc}
4576 : ${host_ld_default:=$host_cc}
4577 set_default ar as objcc dep_cc ld ln_s host_ld windres
4578
4579 probe_cc as "$as"
4580 asflags_filter=$_flags_filter
4581 add_asflags $_flags $_cflags
4582 set_ccvars AS
4583
4584 probe_cc objcc "$objcc"
4585 objcflags_filter=$_flags_filter
4586 add_objcflags $_flags $_cflags
4587 set_ccvars OBJC
4588
4589 probe_cc ld "$ld"
4590 ldflags_filter=$_flags_filter
4591 add_ldflags $_flags $_ldflags
4592 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4593 LD_O=${_ld_o-$LD_O}
4594 LD_LIB=${_ld_lib-$LD_LIB}
4595 LD_PATH=${_ld_path-$LD_PATH}
4596
4597 probe_cc hostld "$host_ld"
4598 host_ldflags_filter=$_flags_filter
4599 add_host_ldflags $_flags $_ldflags
4600 HOSTLD_O=${_ld_o-$HOSTLD_O}
4601
4602 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4603     probe_cc depcc "$dep_cc"
4604     CCDEP=${_DEPCMD:-$DEPCMD}
4605     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4606     DEPCCFLAGS=$_flags
4607 fi
4608
4609 if $ar 2>&1 | grep -q Microsoft; then
4610     arflags="-nologo"
4611     ar_o='-out:$@'
4612 elif $ar 2>&1 | grep -q "\[D\] "; then
4613     arflags="rcD"
4614     ar_o='$@'
4615 else
4616     arflags="rc"
4617     ar_o='$@'
4618 fi
4619
4620 add_cflags $extra_cflags
4621 add_cxxflags $extra_cxxflags
4622 add_objcflags $extra_objcflags
4623 add_asflags $extra_cflags
4624
4625 if test -n "$sysroot"; then
4626     case "$cc_type" in
4627         gcc|llvm_gcc|clang)
4628             add_cppflags --sysroot="$sysroot"
4629             add_ldflags --sysroot="$sysroot"
4630         ;;
4631     esac
4632 fi
4633
4634 if test "$cpu" = host; then
4635     enabled cross_compile &&
4636         die "--cpu=host makes no sense when cross-compiling."
4637
4638     case "$cc_type" in
4639         gcc|llvm_gcc)
4640             check_native(){
4641                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4642                 sed -n "/cc1.*$1=/{
4643                             s/.*$1=\\([^ ]*\\).*/\\1/
4644                             p
4645                             q
4646                         }" $TMPE
4647             }
4648             cpu=$(check_native -march || check_native -mcpu)
4649         ;;
4650         clang)
4651             check_native(){
4652                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4653                 sed -n "/cc1.*-target-cpu /{
4654                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4655                             p
4656                             q
4657                         }" $TMPE
4658             }
4659             cpu=$(check_native -march)
4660         ;;
4661     esac
4662
4663     test "${cpu:-host}" = host &&
4664         die "--cpu=host not supported with compiler $cc"
4665 fi
4666
4667 # Deal with common $arch aliases
4668 case "$arch" in
4669     aarch64|arm64)
4670         arch="aarch64"
4671     ;;
4672     arm*|iPad*|iPhone*)
4673         arch="arm"
4674     ;;
4675     mips*|IP*)
4676         case "$arch" in
4677         *el)
4678             add_cppflags -EL
4679             add_ldflags -EL
4680         ;;
4681         *eb)
4682             add_cppflags -EB
4683             add_ldflags -EB
4684         ;;
4685         esac
4686         arch="mips"
4687     ;;
4688     parisc*|hppa*)
4689         arch="parisc"
4690     ;;
4691     "Power Macintosh"|ppc*|powerpc*)
4692         arch="ppc"
4693     ;;
4694     s390|s390x)
4695         arch="s390"
4696     ;;
4697     sh4|sh)
4698         arch="sh4"
4699     ;;
4700     sun4*|sparc*)
4701         arch="sparc"
4702     ;;
4703     tilegx|tile-gx)
4704         arch="tilegx"
4705     ;;
4706     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4707         arch="x86"
4708     ;;
4709 esac
4710
4711 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4712 enable $arch
4713
4714 # Add processor-specific flags
4715 if enabled aarch64; then
4716
4717     case $cpu in
4718         armv*)
4719             cpuflags="-march=$cpu"
4720         ;;
4721         *)
4722             cpuflags="-mcpu=$cpu"
4723         ;;
4724     esac
4725
4726 elif enabled alpha; then
4727
4728     cpuflags="-mcpu=$cpu"
4729
4730 elif enabled arm; then
4731
4732     check_arm_arch() {
4733         test_cpp_condition stddef.h \
4734             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4735             $cpuflags
4736     }
4737
4738     probe_arm_arch() {
4739         if   check_arm_arch 4;        then echo armv4
4740         elif check_arm_arch 4T;       then echo armv4t
4741         elif check_arm_arch 5;        then echo armv5
4742         elif check_arm_arch 5E;       then echo armv5e
4743         elif check_arm_arch 5T;       then echo armv5t
4744         elif check_arm_arch 5TE;      then echo armv5te
4745         elif check_arm_arch 5TEJ;     then echo armv5te
4746         elif check_arm_arch 6;        then echo armv6
4747         elif check_arm_arch 6J;       then echo armv6j
4748         elif check_arm_arch 6K;       then echo armv6k
4749         elif check_arm_arch 6Z;       then echo armv6z
4750         elif check_arm_arch 6KZ;      then echo armv6zk
4751         elif check_arm_arch 6ZK;      then echo armv6zk
4752         elif check_arm_arch 6T2;      then echo armv6t2
4753         elif check_arm_arch 7;        then echo armv7
4754         elif check_arm_arch 7A  7_A;  then echo armv7-a
4755         elif check_arm_arch 7S;       then echo armv7-a
4756         elif check_arm_arch 7R  7_R;  then echo armv7-r
4757         elif check_arm_arch 7M  7_M;  then echo armv7-m
4758         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4759         elif check_arm_arch 8A  8_A;  then echo armv8-a
4760         fi
4761     }
4762
4763     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4764
4765     case $cpu in
4766         armv*)
4767             cpuflags="-march=$cpu"
4768             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4769         ;;
4770         *)
4771             cpuflags="-mcpu=$cpu"
4772             case $cpu in
4773                 cortex-a*)                               subarch=armv7a  ;;
4774                 cortex-r*)                               subarch=armv7r  ;;
4775                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4776                 arm11*)                                  subarch=armv6   ;;
4777                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4778                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4779                 *)                             subarch=$(probe_arm_arch) ;;
4780             esac
4781         ;;
4782     esac
4783
4784     case "$subarch" in
4785         armv5t*)    enable fast_clz                ;;
4786         armv[6-8]*)
4787             enable fast_clz
4788             disabled fast_unaligned || enable fast_unaligned
4789             ;;
4790     esac
4791
4792 elif enabled avr32; then
4793
4794     case $cpu in
4795         ap7[02]0[0-2])
4796             subarch="avr32_ap"
4797             cpuflags="-mpart=$cpu"
4798         ;;
4799         ap)
4800             subarch="avr32_ap"
4801             cpuflags="-march=$cpu"
4802         ;;
4803         uc3[ab]*)
4804             subarch="avr32_uc"
4805             cpuflags="-mcpu=$cpu"
4806         ;;
4807         uc)
4808             subarch="avr32_uc"
4809             cpuflags="-march=$cpu"
4810         ;;
4811     esac
4812
4813 elif enabled bfin; then
4814
4815     cpuflags="-mcpu=$cpu"
4816
4817 elif enabled mips; then
4818
4819     cpuflags="-march=$cpu"
4820
4821     if [ "$cpu" != "generic" ]; then
4822         disable mips32r2
4823         disable mips32r5
4824         disable mips64r2
4825         disable mips32r6
4826         disable mips64r6
4827         disable loongson2
4828         disable loongson3
4829
4830         case $cpu in
4831             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4832                 enable mips32r2
4833                 disable msa
4834             ;;
4835             p5600|i6400|p6600)
4836                 disable mipsdsp
4837                 disable mipsdspr2
4838             ;;
4839             loongson*)
4840                 enable loongson2
4841                 enable loongson3
4842                 enable local_aligned
4843                 enable simd_align_16
4844                 enable fast_64bit
4845                 enable fast_clz
4846                 enable fast_cmov
4847                 enable fast_unaligned
4848                 disable aligned_stack
4849                 disable mipsfpu
4850                 disable mipsdsp
4851                 disable mipsdspr2
4852                 # When gcc version less than 5.3.0, add -fno-expensive-optimizations flag.
4853                 if [ $cc == gcc ]; then
4854                     gcc_version=$(gcc -dumpversion)
4855                     if [ "$(echo "$gcc_version 5.3.0" | tr " " "\n" | sort -rV | head -n 1)" == "$gcc_version" ]; then
4856                         expensive_optimization_flag=""
4857                     else
4858                         expensive_optimization_flag="-fno-expensive-optimizations"
4859                     fi
4860                 fi
4861                 case $cpu in
4862                     loongson3*)
4863                         cpuflags="-march=loongson3a -mhard-float $expensive_optimization_flag"
4864                     ;;
4865                     loongson2e)
4866                         cpuflags="-march=loongson2e -mhard-float $expensive_optimization_flag"
4867                     ;;
4868                     loongson2f)
4869                         cpuflags="-march=loongson2f -mhard-float $expensive_optimization_flag"
4870                     ;;
4871                 esac
4872             ;;
4873             *)
4874                 # Unknown CPU. Disable everything.
4875                 warn "unknown CPU. Disabling all MIPS optimizations."
4876                 disable mipsfpu
4877                 disable mipsdsp
4878                 disable mipsdspr2
4879                 disable msa
4880                 disable mmi
4881             ;;
4882         esac
4883
4884         case $cpu in
4885             24kc)
4886                 disable mipsfpu
4887                 disable mipsdsp
4888                 disable mipsdspr2
4889             ;;
4890             24kf*)
4891                 disable mipsdsp
4892                 disable mipsdspr2
4893             ;;
4894             24kec|34kc|1004kc)
4895                 disable mipsfpu
4896                 disable mipsdspr2
4897             ;;
4898             24kef*|34kf*|1004kf*)
4899                 disable mipsdspr2
4900             ;;
4901             74kc)
4902                 disable mipsfpu
4903             ;;
4904             p5600)
4905                 enable mips32r5
4906                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4907             ;;
4908             i6400)
4909                 enable mips64r6
4910                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4911             ;;
4912             p6600)
4913                 enable mips64r6
4914                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4915             ;;
4916         esac
4917     else
4918         # We do not disable anything. Is up to the user to disable the unwanted features.
4919         warn 'generic cpu selected'
4920     fi
4921
4922 elif enabled ppc; then
4923
4924     disable ldbrx
4925
4926     case $(tolower $cpu) in
4927         601|ppc601|powerpc601)
4928             cpuflags="-mcpu=601"
4929             disable altivec
4930         ;;
4931         603*|ppc603*|powerpc603*)
4932             cpuflags="-mcpu=603"
4933             disable altivec
4934         ;;
4935         604*|ppc604*|powerpc604*)
4936             cpuflags="-mcpu=604"
4937             disable altivec
4938         ;;
4939         g3|75*|ppc75*|powerpc75*)
4940             cpuflags="-mcpu=750"
4941             disable altivec
4942         ;;
4943         g4|745*|ppc745*|powerpc745*)
4944             cpuflags="-mcpu=7450"
4945             disable vsx
4946         ;;
4947         74*|ppc74*|powerpc74*)
4948             cpuflags="-mcpu=7400"
4949             disable vsx
4950         ;;
4951         g5|970|ppc970|powerpc970)
4952             cpuflags="-mcpu=970"
4953             disable vsx
4954         ;;
4955         power[3-6]*)
4956             cpuflags="-mcpu=$cpu"
4957             disable vsx
4958         ;;
4959         power[7-8]*)
4960             cpuflags="-mcpu=$cpu"
4961         ;;
4962         cell)
4963             cpuflags="-mcpu=cell"
4964             enable ldbrx
4965             disable vsx
4966         ;;
4967         e500mc)
4968             cpuflags="-mcpu=e500mc"
4969             disable altivec
4970         ;;
4971         e500v2)
4972             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4973             disable altivec
4974             disable dcbzl
4975         ;;
4976         e500)
4977             cpuflags="-mcpu=8540 -mhard-float"
4978             disable altivec
4979             disable dcbzl
4980         ;;
4981     esac
4982
4983 elif enabled sparc; then
4984
4985     case $cpu in
4986         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4987             cpuflags="-mcpu=$cpu"
4988         ;;
4989         ultrasparc*|niagara[234])
4990             cpuflags="-mcpu=$cpu"
4991         ;;
4992     esac
4993
4994 elif enabled x86; then
4995
4996     case $cpu in
4997         i[345]86|pentium)
4998             cpuflags="-march=$cpu"
4999             disable i686
5000             disable mmx
5001         ;;
5002         # targets that do NOT support nopl and conditional mov (cmov)
5003         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
5004             cpuflags="-march=$cpu"
5005             disable i686
5006         ;;
5007         # targets that do support nopl and conditional mov (cmov)
5008         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
5009         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
5010         |amdfam10|barcelona|b[dt]ver*|znver*)
5011             cpuflags="-march=$cpu"
5012             enable i686
5013             enable fast_cmov
5014         ;;
5015         # targets that do support conditional mov but on which it's slow
5016         pentium4|pentium4m|prescott|nocona)
5017             cpuflags="-march=$cpu"
5018             enable i686
5019             disable fast_cmov
5020         ;;
5021     esac
5022
5023 fi
5024
5025 if [ "$cpu" != generic ]; then
5026     add_cflags  $cpuflags
5027     add_asflags $cpuflags
5028     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
5029 fi
5030
5031 # compiler sanity check
5032 test_exec <<EOF
5033 int main(void){ return 0; }
5034 EOF
5035 if test "$?" != 0; then
5036     echo "$cc is unable to create an executable file."
5037     if test -z "$cross_prefix" && ! enabled cross_compile ; then
5038         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
5039         echo "Only do this if you know what cross compiling means."
5040     fi
5041     die "C compiler test failed."
5042 fi
5043
5044 add_cppflags -D_ISOC99_SOURCE
5045 add_cxxflags -D__STDC_CONSTANT_MACROS
5046 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
5047
5048 # some compilers silently accept -std=c11, so we also need to check that the
5049 # version macro is defined properly
5050 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
5051     add_cflags -std=c11 ||
5052     check_cflags -std=c99
5053
5054 check_cppflags -D_FILE_OFFSET_BITS=64
5055 check_cppflags -D_LARGEFILE_SOURCE
5056
5057 add_host_cppflags -D_ISOC99_SOURCE
5058 check_host_cflags -std=c99
5059 check_host_cflags -Wall
5060 check_host_cflags $host_cflags_speed
5061
5062 check_64bit(){
5063     arch32=$1
5064     arch64=$2
5065     expr=${3:-'sizeof(void *) > 4'}
5066     test_code cc "" "int test[2*($expr) - 1]" &&
5067         subarch=$arch64 || subarch=$arch32
5068     enable $subarch
5069 }
5070
5071 case "$arch" in
5072     aarch64|alpha|ia64)
5073         enabled shared && enable_weak pic
5074     ;;
5075     mips)
5076         check_64bit mips mips64 '_MIPS_SIM > 1'
5077         enabled shared && enable_weak pic
5078     ;;
5079     parisc)
5080         check_64bit parisc parisc64
5081         enabled shared && enable_weak pic
5082     ;;
5083     ppc)
5084         check_64bit ppc ppc64
5085         enabled shared && enable_weak pic
5086     ;;
5087     s390)
5088         check_64bit s390 s390x
5089         enabled shared && enable_weak pic
5090     ;;
5091     sparc)
5092         check_64bit sparc sparc64
5093         enabled shared && enable_weak pic
5094     ;;
5095     x86)
5096         check_64bit x86_32 x86_64
5097         # Treat x32 as x64 for now. Note it also needs pic if shared
5098         test "$subarch" = "x86_32" && test_cpp_condition stddef.h 'defined(__x86_64__)' &&
5099             subarch=x86_64 && enable x86_64 && disable x86_32
5100         if enabled x86_64; then
5101             enabled shared && enable_weak pic
5102             objformat=elf64
5103         fi
5104     ;;
5105 esac
5106
5107 # OS specific
5108 case $target_os in
5109     aix)
5110         SHFLAGS=-shared
5111         add_cppflags '-I\$(SRC_PATH)/compat/aix'
5112         enabled shared && add_ldflags -Wl,-brtl
5113         arflags='-Xany -r -c'
5114         striptype=""
5115         ;;
5116     android)
5117         disable symver
5118         enable section_data_rel_ro
5119         add_cflags -fPIE
5120         add_ldexeflags -fPIE -pie
5121         SLIB_INSTALL_NAME='$(SLIBNAME)'
5122         SLIB_INSTALL_LINKS=
5123         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
5124         ;;
5125     haiku)
5126         prefix_default="/boot/common"
5127         network_extralibs="-lnetwork"
5128         host_extralibs=
5129         ;;
5130     sunos)
5131         SHFLAGS='-shared -Wl,-h,$$(@F)'
5132         enabled x86 && append SHFLAGS -mimpure-text
5133         network_extralibs="-lsocket -lnsl"
5134         add_cppflags -D__EXTENSIONS__
5135         # When using suncc to build, the Solaris linker will mark
5136         # an executable with each instruction set encountered by
5137         # the Solaris assembler.  As our libraries contain their own
5138         # guards for processor-specific code, instead suppress
5139         # generation of the HWCAPS ELF section on Solaris x86 only.
5140         enabled_all suncc x86 &&
5141             echo "hwcap_1 = OVERRIDE;" > mapfile &&
5142             add_ldflags -Wl,-M,mapfile
5143         nm_default='nm -P -g'
5144         version_script='-M'
5145         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
5146         ;;
5147     netbsd)
5148         disable symver
5149         oss_indev_extralibs="-lossaudio"
5150         oss_outdev_extralibs="-lossaudio"
5151         enabled gcc || check_ldflags -Wl,-zmuldefs
5152         ;;
5153     openbsd|bitrig)
5154         disable symver
5155         striptype=""
5156         SHFLAGS='-shared'
5157         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
5158         SLIB_INSTALL_LINKS=
5159         oss_indev_extralibs="-lossaudio"
5160         oss_outdev_extralibs="-lossaudio"
5161         ;;
5162     dragonfly)
5163         disable symver
5164         ;;
5165     freebsd)
5166         ;;
5167     bsd/os)
5168         add_extralibs -lpoll -lgnugetopt
5169         strip="strip -d"
5170         ;;
5171     darwin)
5172         enabled ppc && add_asflags -force_cpusubtype_ALL
5173         install_name_dir_default='$(SHLIBDIR)'
5174         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
5175         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
5176         strip="${strip} -x"
5177         add_ldflags -Wl,-dynamic,-search_paths_first
5178         check_cflags -Werror=partial-availability
5179         SLIBSUF=".dylib"
5180         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
5181         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
5182         enabled x86_64 && objformat="macho64" || objformat="macho32"
5183         enabled_any pic shared x86_64 ||
5184             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
5185         check_headers dispatch/dispatch.h &&
5186             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
5187         if test -n "$sysroot"; then
5188             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
5189             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
5190         fi
5191         version_script='-exported_symbols_list'
5192         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
5193         ;;
5194     msys*)
5195         die "Native MSYS builds are discouraged, please use the MINGW environment."
5196         ;;
5197     mingw32*|mingw64*)
5198         target_os=mingw32
5199         LIBTARGET=i386
5200         if enabled x86_64; then
5201             LIBTARGET="i386:x86-64"
5202         elif enabled arm; then
5203             LIBTARGET="arm"
5204         elif enabled aarch64; then
5205             LIBTARGET="arm64"
5206         fi
5207         if enabled shared; then
5208             # Cannot build both shared and static libs when using dllimport.
5209             disable static
5210         fi
5211         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5212         enabled x86_32 && check_ldflags -Wl,--large-address-aware
5213         shlibdir_default="$bindir_default"
5214         SLIBPREF=""
5215         SLIBSUF=".dll"
5216         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5217         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5218         if test_cmd lib.exe -list; then
5219             SLIB_EXTRA_CMD=-'lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5220             if enabled x86_64; then
5221                 LIBTARGET=x64
5222             fi
5223         else
5224             SLIB_EXTRA_CMD=-'$(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
5225         fi
5226         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5227         SLIB_INSTALL_LINKS=
5228         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5229         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5230         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5231         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--disable-auto-image-base $$(@:$(SLIBSUF)=.def)'
5232         enabled x86_64 && objformat="win64" || objformat="win32"
5233         dlltool="${cross_prefix}dlltool"
5234         ranlib=:
5235         enable dos_paths
5236         check_ldflags -Wl,--nxcompat,--dynamicbase
5237         # Lets work around some stupidity in binutils.
5238         # ld will strip relocations from executables even though we need them
5239         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
5240         # however ld then forgets what the entry point should be (oops) so we
5241         # have to manually (re)set it.
5242         if enabled x86_32; then
5243             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
5244         elif enabled x86_64; then
5245             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
5246             check_ldflags -Wl,--high-entropy-va # binutils 2.25
5247             # Set image base >4GB for extra entropy with HEASLR
5248             add_ldexeflags -Wl,--image-base,0x140000000
5249             append SHFLAGS -Wl,--image-base,0x180000000
5250         fi
5251         ;;
5252     win32|win64)
5253         disable symver
5254         if enabled shared; then
5255             # Link to the import library instead of the normal static library
5256             # for shared libs.
5257             LD_LIB='%.lib'
5258             # Cannot build both shared and static libs with MSVC or icl.
5259             disable static
5260         fi
5261         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
5262         shlibdir_default="$bindir_default"
5263         SLIBPREF=""
5264         SLIBSUF=".dll"
5265         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5266         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5267         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5268         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5269         SLIB_INSTALL_LINKS=
5270         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5271         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5272         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5273         enabled x86_64 && objformat="win64" || objformat="win32"
5274         ranlib=:
5275         enable dos_paths
5276         ;;
5277     cygwin*)
5278         target_os=cygwin
5279         shlibdir_default="$bindir_default"
5280         SLIBPREF="cyg"
5281         SLIBSUF=".dll"
5282         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5283         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5284         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5285         SLIB_INSTALL_LINKS=
5286         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5287         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5288         enabled x86_64 && objformat="win64" || objformat="win32"
5289         enable dos_paths
5290         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5291         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5292         ;;
5293     *-dos|freedos|opendos)
5294         network_extralibs="-lsocket"
5295         objformat="coff"
5296         enable dos_paths
5297         add_cppflags -U__STRICT_ANSI__
5298         ;;
5299     linux)
5300         enable section_data_rel_ro
5301         enabled_any arm aarch64 && enable_weak linux_perf
5302         ;;
5303     irix*)
5304         target_os=irix
5305         ranlib="echo ignoring ranlib"
5306         ;;
5307     os/2*)
5308         strip="lxlite -CS"
5309         striptype=""
5310         objformat="aout"
5311         add_cppflags -D_GNU_SOURCE
5312         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5313         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5314         LIBSUF="_s.a"
5315         SLIBPREF=""
5316         SLIBSUF=".dll"
5317         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5318         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5319         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5320             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5321             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5322             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5323             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5324         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5325             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5326         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5327         SLIB_INSTALL_LINKS=
5328         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5329         enable dos_paths
5330         enable_weak os2threads
5331         ;;
5332     gnu/kfreebsd)
5333         add_cppflags -D_BSD_SOURCE
5334         ;;
5335     gnu)
5336         ;;
5337     qnx)
5338         add_cppflags -D_QNX_SOURCE
5339         network_extralibs="-lsocket"
5340         ;;
5341     symbian)
5342         SLIBSUF=".dll"
5343         enable dos_paths
5344         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5345         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5346         add_ldflags -Wl,--target1-abs,--no-undefined \
5347                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5348                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5349         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5350                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5351                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5352         ;;
5353     minix)
5354         ;;
5355     none)
5356         ;;
5357     *)
5358         die "Unknown OS '$target_os'."
5359         ;;
5360 esac
5361
5362 # test if creating links works
5363 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5364 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5365 mkdir "$link_dest"
5366 $ln_s "$link_dest" "$link_name"
5367 touch "$link_dest/test_file"
5368 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5369     # create link to source path
5370     [ -e src ] && rm src
5371     $ln_s "$source_path" src
5372     source_link=src
5373 else
5374     # creating directory links doesn't work
5375     # fall back to using the full source path
5376     source_link="$source_path"
5377 fi
5378 # cleanup
5379 rm -r "$link_dest"
5380 rm -r "$link_name"
5381
5382 # determine libc flavour
5383
5384 probe_libc(){
5385     pfx=$1
5386     pfx_no_=${pfx%_}
5387     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5388     if test_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5389         eval ${pfx}libc_type=uclibc
5390         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5391     elif test_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5392         eval ${pfx}libc_type=glibc
5393         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5394     # MinGW headers can be installed on Cygwin, so check for newlib first.
5395     elif test_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5396         eval ${pfx}libc_type=newlib
5397         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5398     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5399     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5400         eval ${pfx}libc_type=mingw64
5401         if test_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5402             add_compat msvcrt/snprintf.o
5403             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5404         fi
5405         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5406         eval test \$${pfx_no_}cc_type = "gcc" &&
5407             add_${pfx}cppflags -D__printf__=__gnu_printf__
5408         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5409             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5410     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5411          test_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5412         eval ${pfx}libc_type=mingw32
5413         test_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5414             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5415             die "ERROR: MinGW32 runtime version must be >= 3.15."
5416         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5417         test_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5418             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5419         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5420             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5421         eval test \$${pfx_no_}cc_type = "gcc" &&
5422             add_${pfx}cppflags -D__printf__=__gnu_printf__
5423     elif test_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5424         eval ${pfx}libc_type=msvcrt
5425         if test_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5426             if [ "$pfx" = host_ ]; then
5427                 add_host_cppflags -Dsnprintf=_snprintf
5428             else
5429                 add_compat strtod.o strtod=avpriv_strtod
5430                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5431                                              _snprintf=avpriv_snprintf  \
5432                                              vsnprintf=avpriv_vsnprintf
5433             fi
5434         fi
5435         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5436         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5437         # 0x601 by default unless something else is set by the user.
5438         # This can easily lead to us detecting functions only present
5439         # in such new versions and producing binaries requiring windows 7.0.
5440         # Therefore explicitly set the default to Vista unless the user has
5441         # set something else on the command line.
5442         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5443         # family. For these cases, configure is free to use any functions
5444         # found in the SDK headers by default. (Alternatively, we could force
5445         # _WIN32_WINNT to 0x0602 in that case.)
5446         test_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5447             { test_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0600; }
5448 #ifdef WINAPI_FAMILY
5449 #include <winapifamily.h>
5450 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5451 #error not desktop
5452 #endif
5453 #endif
5454 EOF
5455         if [ "$pfx" = "" ]; then
5456             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5457             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5458         fi
5459     elif test_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5460         eval ${pfx}libc_type=klibc
5461     elif test_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5462         eval ${pfx}libc_type=bionic
5463     elif test_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5464         eval ${pfx}libc_type=solaris
5465         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5466     fi
5467     test_${pfx}cc <<EOF
5468 #include <time.h>
5469 void *v = localtime_r;
5470 EOF
5471 test "$?" != 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
5472 #include <time.h>
5473 void *v = localtime_r;
5474 EOF
5475
5476     eval test -n "\${${pfx}libc_type}" && enable ${pfx}libc_${libc_type}
5477 }
5478
5479 probe_libc
5480 probe_libc host_
5481
5482 # hacks for compiler/libc/os combinations
5483
5484 case $libc_type in
5485     bionic)
5486         add_compat strtod.o strtod=avpriv_strtod
5487         ;;
5488 esac
5489
5490 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5491     add_cppflags '-I\$(SRC_PATH)/compat/float'
5492
5493 test_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5494
5495 set_default libdir
5496 : ${shlibdir_default:="$libdir"}
5497 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5498
5499 set_default $PATHS_LIST
5500 set_default nm
5501
5502 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5503
5504 enable_weak_pic() {
5505     disabled pic && return
5506     enable pic
5507     add_cppflags -DPIC
5508     case "$target_os" in
5509     mingw*|cygwin*|win*)
5510         ;;
5511     *)
5512         add_cflags -fPIC
5513         add_asflags -fPIC
5514         ;;
5515     esac
5516 }
5517
5518 enabled pic && enable_weak_pic
5519
5520 test_cc <<EOF || die "Symbol mangling check failed."
5521 int ff_extern;
5522 EOF
5523 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5524 extern_prefix=${sym%%ff_extern*}
5525
5526 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
5527
5528 for restrict_keyword in restrict __restrict__ __restrict ""; do
5529     test_code cc "" "char * $restrict_keyword p" && break
5530 done
5531
5532 check_cc pragma_deprecated "" '_Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"")'
5533
5534 # The global variable ensures the bits appear unchanged in the object file.
5535 test_cc <<EOF || die "endian test failed"
5536 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5537 EOF
5538 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5539
5540 check_cc const_nan math.h "struct { double d; } static const bar[] = { { NAN } }"
5541
5542 if ! enabled ppc64 || enabled bigendian; then
5543     disable vsx
5544 fi
5545
5546 check_gas() {
5547     log "check_gas using '$as' as AS"
5548     # :vararg is used on aarch64, arm and ppc altivec
5549     check_as vararg "
5550 .macro m n, y:vararg=0
5551 \n: .int \y
5552 .endm
5553 m x" || return 1
5554     # .altmacro is only used in arm asm
5555     ! enabled arm || check_as gnu_as ".altmacro"
5556 }
5557
5558 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5559     nogas=:
5560     enabled_any arm aarch64 && nogas=die
5561     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5562     as_noop=-v
5563
5564     case $as_type in
5565         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5566         gcc)  gaspp_as_type=gas ;;
5567         *)    gaspp_as_type=$as_type ;;
5568     esac
5569
5570     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5571
5572     test "${as#*gas-preprocessor.pl}" != "$as" ||
5573     test_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5574         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5575
5576     if ! check_gas ; then
5577         as=${gas:=$as}
5578         check_gas || \
5579             $nogas "GNU assembler not found, install/update gas-preprocessor"
5580     fi
5581
5582     check_as as_func ".func test
5583                       .endfunc"
5584 fi
5585
5586 check_inline_asm inline_asm_labels '"1:\n"'
5587
5588 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5589
5590 if enabled aarch64; then
5591     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5592     # internal assembler in clang 3.3 does not support this instruction
5593     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5594     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5595
5596     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5597
5598 elif enabled alpha; then
5599
5600     check_cflags -mieee
5601
5602 elif enabled arm; then
5603
5604     enabled msvc && check_cpp_condition thumb stddef.h "defined _M_ARMT"
5605     test_cpp_condition stddef.h "defined __thumb__" && test_cc <<EOF && enable_weak thumb
5606 float func(float a, float b){ return a+b; }
5607 EOF
5608     enabled thumb && check_cflags -mthumb || check_cflags -marm
5609
5610     if check_cpp_condition vfp_args stddef.h "defined __ARM_PCS_VFP"; then
5611         :
5612     elif check_cpp_condition vfp_args stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5613         :
5614     elif ! test_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5615         case "${cross_prefix:-$cc}" in
5616             *hardfloat*) enable vfp_args; fpabi=vfp ;;
5617             *) check_ld "cc" vfp_args <<EOF && fpabi=vfp || fpabi=soft ;;
5618 __asm__ (".eabi_attribute 28, 1");
5619 int main(void) { return 0; }
5620 EOF
5621         esac
5622         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5623     fi
5624
5625     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5626     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5627     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5628     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5629     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5630     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5631     enabled setend  && check_insn setend  'setend be'
5632
5633     [ $target_os = linux ] || [ $target_os = android ] ||
5634         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5635             $ARCH_EXT_LIST_ARM
5636
5637     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5638
5639     check_as as_arch_directive ".arch armv7-a"
5640     check_as as_dn_directive   "ra .dn d0.i16"
5641     check_as as_fpu_directive  ".fpu neon"
5642
5643     # llvm's integrated assembler supports .object_arch from llvm 3.5
5644     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5645         check_as as_object_arch ".object_arch armv4"
5646
5647     # MS armasm fails to assemble our PIC constructs
5648     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5649
5650 elif enabled mips; then
5651
5652     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5653     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5654     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5655
5656     # Enable minimum ISA based on selected options
5657     if enabled mips64; then
5658         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5659         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5660         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5661     else
5662         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5663         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5664         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5665         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5666     fi
5667
5668     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5669     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5670     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_headers msa.h || disable msa
5671     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5672     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5673
5674     if enabled bigendian && enabled msa; then
5675         disable msa
5676     fi
5677
5678 elif enabled parisc; then
5679
5680     if enabled gcc; then
5681         case $($cc -dumpversion) in
5682             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5683         esac
5684     fi
5685
5686 elif enabled ppc; then
5687
5688     enable local_aligned
5689
5690     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5691     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5692     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5693     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5694
5695     if enabled altivec; then
5696         check_cflags -maltivec -mabi=altivec
5697
5698         # check if our compiler supports Motorola AltiVec C API
5699         check_cc altivec altivec.h "vector signed int v1 = (vector signed int) { 0 };
5700                                     vector signed int v2 = (vector signed int) { 1 };
5701                                     v1 = vec_add(v1, v2);"
5702
5703         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5704     fi
5705
5706     if enabled vsx; then
5707         check_cflags -mvsx &&
5708         check_cc vsx altivec.h "int v[4] = { 0 };
5709                                 vector signed int v1 = vec_vsx_ld(0, v);"
5710     fi
5711
5712     if enabled power8; then
5713         check_cpp_condition power8 "altivec.h" "defined(_ARCH_PWR8)"
5714     fi
5715
5716 elif enabled x86; then
5717
5718     check_builtin rdtsc    intrin.h   "__rdtsc()"
5719     check_builtin mm_empty mmintrin.h "_mm_empty()"
5720
5721     enable local_aligned
5722
5723     # check whether EBP is available on x86
5724     # As 'i' is stored on the stack, this program will crash
5725     # if the base pointer is used to access it because the
5726     # base pointer is cleared in the inline assembly code.
5727     check_exec_crash <<EOF && enable ebp_available
5728 volatile int i=0;
5729 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5730 return i;
5731 EOF
5732
5733     # check whether EBX is available on x86
5734     check_inline_asm ebx_available '""::"b"(0)' &&
5735         check_inline_asm ebx_available '"":::"%ebx"'
5736
5737     # check whether xmm clobbers are supported
5738     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5739
5740     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5741         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5742
5743     # check whether binutils is new enough to compile SSSE3/MMXEXT
5744     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5745     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5746
5747     probe_x86asm(){
5748         x86asmexe_probe=$1
5749         if test_cmd $x86asmexe_probe -v; then
5750             x86asmexe=$x86asmexe_probe
5751             x86asm_type=nasm
5752             x86asm_debug="-g -F dwarf"
5753             X86ASMDEP=
5754             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5755         elif test_cmd $x86asmexe_probe --version; then
5756             x86asmexe=$x86asmexe_probe
5757             x86asm_type=yasm
5758             x86asm_debug="-g dwarf2"
5759             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
5760             X86ASM_DEPFLAGS=
5761         fi
5762         check_x86asm x86asm "movbe ecx, [5]"
5763     }
5764
5765     if ! disabled_any asm mmx x86asm; then
5766         disable x86asm
5767         for program in $x86asmexe nasm yasm; do
5768             probe_x86asm $program && break
5769         done
5770         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
5771         X86ASMFLAGS="-f $objformat"
5772         enabled pic               && append X86ASMFLAGS "-DPIC"
5773         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
5774         case "$objformat" in
5775             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
5776         esac
5777
5778         check_x86asm avx512_external "vmovdqa32 [eax]{k1}{z}, zmm0"
5779         check_x86asm avx2_external   "vextracti128 xmm0, ymm0, 0"
5780         check_x86asm xop_external    "vpmacsdd xmm0, xmm1, xmm2, xmm3"
5781         check_x86asm fma4_external   "vfmaddps ymm0, ymm1, ymm2, ymm3"
5782         check_x86asm cpunop          "CPU amdnop"
5783     fi
5784
5785     case "$cpu" in
5786         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5787             disable fast_clz
5788         ;;
5789     esac
5790
5791 fi
5792
5793 check_cc intrinsics_neon arm_neon.h "int16x8_t test = vdupq_n_s16(0)"
5794
5795 check_ldflags -Wl,--as-needed
5796 check_ldflags -Wl,-z,noexecstack
5797
5798 if ! disabled network; then
5799     check_func getaddrinfo $network_extralibs
5800     check_func inet_aton $network_extralibs
5801
5802     check_type netdb.h "struct addrinfo"
5803     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5804     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5805     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5806     check_type poll.h "struct pollfd"
5807     check_type netinet/sctp.h "struct sctp_event_subscribe"
5808     check_struct "sys/socket.h" "struct msghdr" msg_flags
5809     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5810     check_type netinet/in.h "struct sockaddr_in6"
5811     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5812     check_type "sys/types.h sys/socket.h" socklen_t
5813
5814     # Prefer arpa/inet.h over winsock2
5815     if check_headers arpa/inet.h ; then
5816         check_func closesocket
5817     elif check_headers winsock2.h ; then
5818         check_func_headers winsock2.h closesocket -lws2 &&
5819             network_extralibs="-lws2" ||
5820         { check_func_headers winsock2.h closesocket -lws2_32 &&
5821             network_extralibs="-lws2_32"; } || disable winsock2_h network
5822         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5823
5824         check_type ws2tcpip.h socklen_t
5825         check_type ws2tcpip.h "struct addrinfo"
5826         check_type ws2tcpip.h "struct group_source_req"
5827         check_type ws2tcpip.h "struct ip_mreq_source"
5828         check_type ws2tcpip.h "struct ipv6_mreq"
5829         check_type winsock2.h "struct pollfd"
5830         check_struct winsock2.h "struct sockaddr" sa_len
5831         check_type ws2tcpip.h "struct sockaddr_in6"
5832         check_type ws2tcpip.h "struct sockaddr_storage"
5833     else
5834         disable network
5835     fi
5836 fi
5837
5838 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5839 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5840 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5841 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5842 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5843 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5844 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5845
5846 case "$custom_allocator" in
5847     jemalloc)
5848         # jemalloc by default does not use a prefix
5849         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5850     ;;
5851     tcmalloc)
5852         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
5853         malloc_prefix=tc_
5854     ;;
5855 esac
5856
5857 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5858 check_func  ${malloc_prefix}memalign            && enable memalign
5859 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5860
5861 check_func  access
5862 check_func_headers stdlib.h arc4random
5863 check_lib   clock_gettime time.h clock_gettime || check_lib clock_gettime time.h clock_gettime -lrt
5864 check_func  fcntl
5865 check_func  fork
5866 check_func  gethrtime
5867 check_func  getopt
5868 check_func  getrusage
5869 check_func  gettimeofday
5870 check_func  isatty
5871 check_func  mkstemp
5872 check_func  mmap
5873 check_func  mprotect
5874 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5875 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
5876 check_func  sched_getaffinity
5877 check_func  setrlimit
5878 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5879 check_func  strerror_r
5880 check_func  sysconf
5881 check_func  sysctl
5882 check_func  usleep
5883
5884 check_func_headers conio.h kbhit
5885 check_func_headers io.h setmode
5886 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5887 check_func_headers mach/mach_time.h mach_absolute_time
5888 check_func_headers stdlib.h getenv
5889 check_func_headers sys/stat.h lstat
5890
5891 check_func_headers windows.h GetProcessAffinityMask
5892 check_func_headers windows.h GetProcessTimes
5893 check_func_headers windows.h GetSystemTimeAsFileTime
5894 check_func_headers windows.h LoadLibrary
5895 check_func_headers windows.h MapViewOfFile
5896 check_func_headers windows.h PeekNamedPipe
5897 check_func_headers windows.h SetConsoleTextAttribute
5898 check_func_headers windows.h SetConsoleCtrlHandler
5899 check_func_headers windows.h Sleep
5900 check_func_headers windows.h VirtualAlloc
5901 check_func_headers glob.h glob
5902 enabled xlib &&
5903     check_lib xlib "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5904
5905 check_headers direct.h
5906 check_headers dirent.h
5907 check_headers dxgidebug.h
5908 check_headers dxva.h
5909 check_headers dxva2api.h -D_WIN32_WINNT=0x0600
5910 check_headers io.h
5911 check_headers linux/perf_event.h
5912 check_headers libcrystalhd/libcrystalhd_if.h
5913 check_headers malloc.h
5914 check_headers net/udplite.h
5915 check_headers poll.h
5916 check_headers sys/param.h
5917 check_headers sys/resource.h
5918 check_headers sys/select.h
5919 check_headers sys/time.h
5920 check_headers sys/un.h
5921 check_headers termios.h
5922 check_headers unistd.h
5923 check_headers valgrind/valgrind.h
5924 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5925 check_headers windows.h
5926 check_headers X11/extensions/XvMClib.h
5927 check_headers asm/types.h
5928
5929 # it seems there are versions of clang in some distros that try to use the
5930 # gcc headers, which explodes for stdatomic
5931 # so we also check that atomics actually work here
5932 check_builtin stdatomic stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0); foo += bar"
5933
5934 check_lib advapi32 "windows.h"            RegCloseKey          -ladvapi32
5935 check_lib bcrypt   "windows.h bcrypt.h"   BCryptGenRandom      -lbcrypt &&
5936     check_cpp_condition bcrypt bcrypt.h "defined BCRYPT_RNG_ALGORITHM"
5937 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
5938 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
5939 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
5940
5941 check_lib android android/native_window.h ANativeWindow_acquire -landroid
5942 check_lib mediandk "stdint.h media/NdkImage.h" AImage_delete -lmediandk
5943 check_lib camera2ndk "stdbool.h stdint.h camera/NdkCameraManager.h" ACameraManager_create -lcamera2ndk
5944
5945 enabled appkit       && check_apple_framework AppKit
5946 enabled audiotoolbox && check_apple_framework AudioToolbox
5947 enabled avfoundation && check_apple_framework AVFoundation
5948 enabled coreimage    && check_apple_framework CoreImage
5949 enabled videotoolbox && check_apple_framework VideoToolbox
5950
5951 check_apple_framework CoreFoundation
5952 check_apple_framework CoreMedia
5953 check_apple_framework CoreVideo
5954
5955 enabled avfoundation && {
5956     disable coregraphics applicationservices
5957     check_lib coregraphics        CoreGraphics/CoreGraphics.h               CGGetActiveDisplayList "-framework CoreGraphics" ||
5958     check_lib applicationservices ApplicationServices/ApplicationServices.h CGGetActiveDisplayList "-framework ApplicationServices"; }
5959
5960 enabled videotoolbox && {
5961     check_lib coreservices CoreServices/CoreServices.h UTGetOSTypeFromString "-framework CoreServices"
5962     check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_HEVC "-framework CoreMedia"
5963 }
5964
5965 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5966
5967 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5968 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5969 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5970 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5971 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5972
5973 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
5974 check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
5975 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5976 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5977 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
5978 check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
5979
5980 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5981
5982 if ! disabled ffnvcodec; then
5983     check_pkg_config ffnvcodec "ffnvcodec >= 8.1.24.2" \
5984           "ffnvcodec/nvEncodeAPI.h ffnvcodec/dynlink_cuda.h ffnvcodec/dynlink_cuviddec.h ffnvcodec/dynlink_nvcuvid.h" "" || \
5985       check_pkg_config ffnvcodec "ffnvcodec >= 8.0.14.2 ffnvcodec < 8.1" \
5986           "ffnvcodec/nvEncodeAPI.h ffnvcodec/dynlink_cuda.h ffnvcodec/dynlink_cuviddec.h ffnvcodec/dynlink_nvcuvid.h" ""
5987 fi
5988
5989 check_cpp_condition winrt windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)"
5990
5991 if ! disabled w32threads && ! enabled pthreads; then
5992     check_func_headers "windows.h process.h" _beginthreadex &&
5993         check_type "windows.h" CONDITION_VARIABLE &&
5994         check_type "windows.h" INIT_ONCE &&
5995         enable w32threads || disable w32threads
5996     if ! enabled w32threads && enabled winrt; then
5997         check_func_headers "windows.h" CreateThread &&
5998             enable w32threads || disable w32threads
5999     fi
6000 fi
6001
6002 # check for some common methods of building with pthread support
6003 # do this before the optional library checks as some of them require pthreads
6004 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
6005     if check_lib pthreads pthread.h pthread_join   -pthread &&
6006        check_lib pthreads pthread.h pthread_create -pthread; then
6007         add_cflags -pthread
6008     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
6009          check_lib pthreads pthread.h pthread_create -pthreads; then
6010         add_cflags -pthreads
6011     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
6012          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
6013         add_cflags -ldl -pthread
6014     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
6015          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
6016         :
6017     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
6018          check_lib pthreads pthread.h pthread_create -lpthread; then
6019         :
6020     elif check_func pthread_join && check_func pthread_create; then
6021         enable pthreads
6022     fi
6023     check_cc pthreads "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER"
6024
6025     if enabled pthreads; then
6026         check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
6027         check_func pthread_cancel $pthreads_extralibs
6028     fi
6029 fi
6030
6031 enabled  zlib && { check_pkg_config zlib zlib "zlib.h" zlibVersion ||
6032                    check_lib zlib   zlib.h      zlibVersion    -lz; }
6033 enabled bzlib && check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
6034 enabled  lzma && check_lib lzma   lzma.h lzma_version_number -llzma
6035
6036 # On some systems dynamic loading requires no extra linker flags
6037 check_lib libdl dlfcn.h "dlopen dlsym" || check_lib libdl dlfcn.h "dlopen dlsym" -ldl
6038
6039 check_lib libm math.h sin -lm
6040
6041 atan2f_args=2
6042 copysign_args=2
6043 hypot_args=2
6044 ldexpf_args=2
6045 powf_args=2
6046
6047 for func in $MATH_FUNCS; do
6048     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
6049 done
6050
6051 for func in $COMPLEX_FUNCS; do
6052     eval check_complexfunc $func \${${func}_args:-1}
6053 done
6054
6055 # these are off by default, so fail if requested and not available
6056 enabled cuda_sdk          && require cuda_sdk cuda.h cuCtxCreate -lcuda
6057 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
6058 enabled decklink          && { require_headers DeckLinkAPI.h &&
6059                                { test_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a090500" || die "ERROR: Decklink API version must be >= 10.9.5."; } }
6060 enabled libndi_newtek     && require_headers Processing.NDI.Lib.h
6061 enabled frei0r            && require_headers frei0r.h
6062 enabled gmp               && require gmp gmp.h mpz_export -lgmp
6063 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
6064 enabled jni               && { [ $target_os = "android" ] && check_headers jni.h && enabled pthreads || die "ERROR: jni not found"; }
6065 enabled ladspa            && require_headers ladspa.h
6066 enabled libaom            && require_pkg_config libaom "aom >= 1.0.0" aom/aom_codec.h aom_codec_version
6067 enabled lv2               && require_pkg_config lv2 lilv-0 "lilv/lilv.h" lilv_world_new
6068 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
6069 enabled libass            && require_pkg_config libass libass ass/ass.h ass_library_init
6070 enabled libbluray         && require_pkg_config libbluray libbluray libbluray/bluray.h bd_open
6071 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
6072 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
6073                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
6074                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
6075 enabled libcaca           && require_pkg_config libcaca caca caca.h caca_create_canvas
6076 enabled libcodec2         && require libcodec2 codec2/codec2.h codec2_create -lcodec2
6077 enabled libdav1d          && require_pkg_config libdav1d "dav1d >= 0.0.1" "dav1d/dav1d.h" dav1d_version
6078 enabled libdavs2          && require_pkg_config libdavs2 "davs2 >= 1.5.115" davs2.h davs2_decoder_open
6079 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
6080 enabled libdrm            && require_pkg_config libdrm libdrm xf86drm.h drmGetVersion
6081 enabled libfdk_aac        && { check_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
6082                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
6083                                  warn "using libfdk without pkg-config"; } }
6084 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"
6085 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
6086 enabled fontconfig        && enable libfontconfig
6087 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
6088 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
6089 enabled libfribidi        && require_pkg_config libfribidi fribidi fribidi.h fribidi_version_info
6090 enabled libgme            && { check_pkg_config libgme libgme gme/gme.h gme_new_emu ||
6091                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }
6092 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
6093                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
6094                                done || die "ERROR: libgsm not found"; }
6095 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc $pthreads_extralibs
6096 enabled libklvanc         && require libklvanc libklvanc/vanc.h klvanc_context_create -lklvanc
6097 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
6098 enabled liblensfun        && require_pkg_config liblensfun lensfun lensfun.h lf_db_new
6099 # While it may appear that require is being used as a pkg-config
6100 # fallback for libmfx, it is actually being used to detect a different
6101 # installation route altogether.  If libmfx is installed via the Intel
6102 # Media SDK or Intel Media Server Studio, these don't come with
6103 # pkg-config support.  Instead, users should make sure that the build
6104 # can find the libraries and headers through other means.
6105 enabled libmfx            && { check_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit ||
6106                                { require libmfx "mfx/mfxvideo.h" MFXInit "-llibmfx $advapi32_extralibs" && warn "using libmfx without pkg-config"; } }
6107 enabled libmodplug        && require_pkg_config libmodplug libmodplug libmodplug/modplug.h ModPlug_Load
6108 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame $libm_extralibs
6109 enabled libmysofa         && { check_pkg_config libmysofa libmysofa mysofa.h mysofa_load ||
6110                                require libmysofa mysofa.h mysofa_load -lmysofa $zlib_extralibs; }
6111 enabled libnpp            && { check_lib libnpp npp.h nppGetLibVersion -lnppig -lnppicc -lnppc -lnppidei ||
6112                                check_lib libnpp npp.h nppGetLibVersion -lnppi -lnppc -lnppidei ||
6113                                die "ERROR: libnpp not found"; }
6114 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
6115 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
6116 enabled libopencv         && { check_headers opencv2/core/core_c.h &&
6117                                { check_pkg_config libopencv opencv opencv2/core/core_c.h cvCreateImageHeader ||
6118                                  require libopencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
6119                                require_pkg_config libopencv opencv opencv/cxcore.h cvCreateImageHeader; }
6120 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
6121 enabled libopenjpeg       && { check_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version ||
6122                                { require_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } }
6123 enabled libopenmpt        && require_pkg_config libopenmpt "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create -lstdc++ && append libopenmpt_extralibs "-lstdc++"
6124 enabled libopus           && {
6125     enabled libopus_decoder && {
6126         require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
6127     }
6128     enabled libopus_encoder && {
6129         require_pkg_config libopus opus opus_multistream.h opus_multistream_surround_encoder_create
6130     }
6131 }
6132 enabled libpulse          && require_pkg_config libpulse libpulse pulse/pulseaudio.h pa_context_new
6133 enabled librsvg           && require_pkg_config librsvg librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
6134 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
6135 enabled librubberband     && require_pkg_config librubberband "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new -lstdc++ && append librubberband_extralibs "-lstdc++"
6136 enabled libshine          && require_pkg_config libshine shine shine/layer3.h shine_encode_buffer
6137 enabled libsmbclient      && { check_pkg_config libsmbclient smbclient libsmbclient.h smbc_init ||
6138                                require libsmbclient libsmbclient.h smbc_init -lsmbclient; }
6139 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy -lstdc++
6140 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
6141 enabled libssh            && require_pkg_config libssh libssh libssh/sftp.h sftp_init
6142 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init
6143 enabled libsrt            && require_pkg_config libsrt "srt >= 1.3.0" srt/srt.h srt_socket
6144 enabled libtensorflow     && require libtensorflow tensorflow/c/c_api.h TF_Version -ltensorflow
6145 enabled libtesseract      && require_pkg_config libtesseract tesseract tesseract/capi.h TessBaseAPICreate
6146 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
6147 enabled libtls            && require_pkg_config libtls libtls tls.h tls_configure
6148 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
6149                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
6150                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
6151 enabled libv4l2           && require_pkg_config libv4l2 libv4l2 libv4l2.h v4l2_ioctl
6152 enabled libvidstab        && require_pkg_config libvidstab "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
6153 enabled libvmaf           && require_pkg_config libvmaf "libvmaf >= 1.3.9" libvmaf.h compute_vmaf
6154 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
6155 enabled libvorbis         && require_pkg_config libvorbis vorbis vorbis/codec.h vorbis_info_init &&
6156                              require_pkg_config libvorbisenc vorbisenc vorbis/vorbisenc.h vorbis_encode_init
6157
6158 enabled libvpx            && {
6159     enabled libvpx_vp8_decoder && {
6160         check_pkg_config libvpx_vp8_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
6161             check_lib libvpx_vp8_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_dec_init_ver VPX_IMG_FMT_HIGHBITDEPTH" -lvpx ||
6162                 die "ERROR: libvpx decoder version must be >=1.4.0";
6163     }
6164     enabled libvpx_vp8_encoder && {
6165         check_pkg_config libvpx_vp8_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
6166             check_lib libvpx_vp8_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VPX_IMG_FMT_HIGHBITDEPTH" -lvpx ||
6167                 die "ERROR: libvpx encoder version must be >=1.4.0";
6168     }
6169     enabled libvpx_vp9_decoder && {
6170         check_pkg_config libvpx_vp9_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
6171             check_lib libvpx_vp9_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx VPX_IMG_FMT_HIGHBITDEPTH" "-lvpx $libm_extralibs"
6172     }
6173     enabled libvpx_vp9_encoder && {
6174         check_pkg_config libvpx_vp9_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
6175             check_lib libvpx_vp9_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VPX_IMG_FMT_HIGHBITDEPTH" "-lvpx $libm_extralibs"
6176     }
6177     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
6178         die "libvpx enabled but no supported decoders found"
6179     fi
6180 }
6181
6182 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
6183 enabled libwebp           && {
6184     enabled libwebp_encoder      && require_pkg_config libwebp "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
6185     enabled libwebp_anim_encoder && check_pkg_config libwebp_anim_encoder "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit; }
6186 enabled libx264           && { check_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode ||
6187                                { require libx264 "stdint.h x264.h" x264_encoder_encode "-lx264 $pthreads_extralibs $libm_extralibs" &&
6188                                  warn "using libx264 without pkg-config"; } } &&
6189                              require_cpp_condition libx264 x264.h "X264_BUILD >= 118" &&
6190                              check_cpp_condition libx262 x264.h "X264_MPEG2"
6191 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
6192                              require_cpp_condition libx265 x265.h "X265_BUILD >= 68"
6193 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode "-lxavs $pthreads_extralibs $libm_extralibs"
6194 enabled libxavs2          && require_pkg_config libxavs2 "xavs2 >= 1.2.77" "stdint.h xavs2.h" xavs2_api_get
6195 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
6196 enabled libzimg           && require_pkg_config libzimg "zimg >= 2.7.0" zimg.h zimg_get_api_version
6197 enabled libzmq            && require_pkg_config libzmq libzmq zmq.h zmq_ctx_new
6198 enabled libzvbi           && require_pkg_config libzvbi zvbi-0.2 libzvbi.h vbi_decoder_new &&
6199                              { test_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
6200                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
6201 enabled libxml2           && require_pkg_config libxml2 libxml-2.0 libxml2/libxml/xmlversion.h xmlCheckVersion
6202 enabled mbedtls           && { check_pkg_config mbedtls mbedtls mbedtls/x509_crt.h mbedtls_x509_crt_init ||
6203                                check_pkg_config mbedtls mbedtls mbedtls/ssl.h mbedtls_ssl_init ||
6204                                check_lib mbedtls mbedtls/ssl.h mbedtls_ssl_init -lmbedtls -lmbedx509 -lmbedcrypto ||
6205                                die "ERROR: mbedTLS not found"; }
6206 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
6207 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
6208                                { ! enabled cross_compile &&
6209                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
6210                                  add_ldflags -L/opt/vc/lib/ &&
6211                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
6212                                die "ERROR: mmal not found" &&
6213                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
6214 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
6215                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
6216                                die "ERROR: openal not found"; } &&
6217                              { test_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
6218                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
6219 enabled opencl            && { check_pkg_config opencl OpenCL CL/cl.h clEnqueueNDRangeKernel ||
6220                                check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
6221                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
6222                                die "ERROR: opencl not found"; } &&
6223                              { test_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
6224                                test_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
6225                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
6226 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
6227                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
6228                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
6229                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
6230                                die "ERROR: opengl not found."
6231                              }
6232 enabled omx               && require_headers OMX_Core.h
6233 enabled omx_rpi           && { check_headers OMX_Core.h ||
6234                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_headers OMX_Core.h ; } ||
6235                                die "ERROR: OpenMAX IL headers not found"; } && enable omx
6236 enabled openssl           && { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
6237                                check_pkg_config openssl openssl openssl/ssl.h SSL_library_init ||
6238                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
6239                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
6240                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
6241                                die "ERROR: openssl not found"; }
6242 enabled rkmpp             && { require_pkg_config rkmpp rockchip_mpp  rockchip/rk_mpi.h mpp_create &&
6243                                require_pkg_config rockchip_mpp "rockchip_mpp >= 1.3.7" rockchip/rk_mpi.h mpp_create &&
6244                                { enabled libdrm ||
6245                                  die "ERROR: rkmpp requires --enable-libdrm"; }
6246                              }
6247 enabled vapoursynth       && require_pkg_config vapoursynth "vapoursynth-script >= 42" VSScript.h vsscript_init
6248
6249
6250 if enabled gcrypt; then
6251     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
6252     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
6253         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
6254         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
6255         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
6256             die "ERROR: gcrypt not found"
6257         add_cflags $gcrypt_cflags
6258     else
6259         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
6260     fi
6261 fi
6262
6263 if enabled sdl2; then
6264     SDL2_CONFIG="${cross_prefix}sdl2-config"
6265     test_pkg_config sdl2 "sdl2 >= 2.0.1 sdl2 < 2.1.0" SDL_events.h SDL_PollEvent
6266     if disabled sdl2 && "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6267         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6268         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6269         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6270         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6271         check_func_headers SDL_events.h SDL_PollEvent $sdl2_extralibs $sdl2_cflags &&
6272             enable sdl2
6273     fi
6274     if test $target_os = "mingw32"; then
6275         sdl2_extralibs=$(filter_out '-mwindows' $sdl2_extralibs)
6276     fi
6277 fi
6278
6279 if enabled decklink; then
6280     case $target_os in
6281         mingw32*|mingw64*|win32|win64)
6282             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6283             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6284             ;;
6285     esac
6286 fi
6287
6288 enabled securetransport &&
6289     check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6290     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" ||
6291         disable securetransport
6292
6293 enabled securetransport &&
6294     check_func SecItemImport "-Wl,-framework,CoreFoundation -Wl,-framework,Security"
6295
6296 enabled schannel &&
6297     check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6298     test_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" &&
6299     schannel_extralibs="-lsecur32" ||
6300         disable schannel
6301
6302 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6303 enabled makeinfo \
6304     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6305     && enable makeinfo_html || disable makeinfo_html
6306 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6307 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6308 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6309 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6310
6311 # check V4L2 codecs available in the API
6312 check_headers linux/fb.h
6313 check_headers linux/videodev2.h
6314 test_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6315 check_cc v4l2_m2m linux/videodev2.h "int i = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_VIDEO_M2M | V4L2_BUF_FLAG_LAST;"
6316 check_cc vc1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VC1_ANNEX_G;"
6317 check_cc mpeg1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG1;"
6318 check_cc mpeg2_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG2;"
6319 check_cc mpeg4_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG4;"
6320 check_cc hevc_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_HEVC;"
6321 check_cc h263_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H263;"
6322 check_cc h264_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H264;"
6323 check_cc vp8_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP8;"
6324 check_cc vp9_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP9;"
6325
6326 check_headers sys/videoio.h
6327 test_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6328
6329 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6330 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6331 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6332 # w32api 3.12 had it defined wrong
6333 check_cpp_condition vfwcap_defines vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER"
6334
6335 check_type "dshow.h" IBaseFilter
6336
6337 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6338 check_headers "dev/bktr/ioctl_meteor.h dev/bktr/ioctl_bt848.h"                   ||
6339     check_headers "machine/ioctl_meteor.h machine/ioctl_bt848.h"                 ||
6340     check_headers "dev/video/meteor/ioctl_meteor.h dev/video/bktr/ioctl_bt848.h" ||
6341     check_headers "dev/ic/bt8xx.h"
6342
6343 if check_struct sys/soundcard.h audio_buf_info bytes; then
6344     enable_sanitized sys/soundcard.h
6345 else
6346     test_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_sanitized sys/soundcard.h
6347     #include <sys/soundcard.h>
6348     audio_buf_info abc;
6349 EOF
6350 fi
6351
6352 enabled alsa && check_pkg_config alsa alsa "alsa/asoundlib.h" snd_pcm_htimestamp ||
6353     check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
6354
6355 enabled libjack &&
6356     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
6357
6358 enabled sndio && check_lib sndio sndio.h sio_open -lsndio
6359
6360 if enabled libcdio; then
6361     check_pkg_config libcdio libcdio_paranoia "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open ||
6362     check_pkg_config libcdio libcdio_paranoia "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open ||
6363     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6364     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6365     die "ERROR: No usable libcdio/cdparanoia found"
6366 fi
6367
6368 enabled libxcb && check_pkg_config libxcb "xcb >= 1.4" xcb/xcb.h xcb_connect ||
6369     disable libxcb_shm libxcb_shape libxcb_xfixes
6370
6371 if enabled libxcb; then
6372     enabled libxcb_shm    && check_pkg_config libxcb_shm    xcb-shm    xcb/shm.h    xcb_shm_attach
6373     enabled libxcb_shape  && check_pkg_config libxcb_shape  xcb-shape  xcb/shape.h  xcb_shape_get_rectangles
6374     enabled libxcb_xfixes && check_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
6375 fi
6376
6377 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6378
6379 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6380 # the desktop api partition
6381 test_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
6382 #ifdef WINAPI_FAMILY
6383 #include <winapifamily.h>
6384 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
6385 #error desktop, not uwp
6386 #else
6387 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
6388 #endif
6389 #else
6390 #error no family set
6391 #endif
6392 EOF
6393
6394 enabled vaapi &&
6395     check_pkg_config vaapi "libva >= 0.35.0" "va/va.h" vaInitialize
6396
6397 if enabled vaapi; then
6398     check_pkg_config vaapi_drm "libva-drm" "va/va_drm.h" vaGetDisplayDRM
6399
6400     if enabled xlib; then
6401         check_pkg_config vaapi_x11 "libva-x11" "va/va_x11.h" vaGetDisplay
6402     fi
6403
6404     check_cpp_condition vaapi_1 "va/va.h" "VA_CHECK_VERSION(1, 0, 0)"
6405 fi
6406
6407 if enabled_all opencl libdrm ; then
6408     check_type "CL/cl_intel.h" "clCreateImageFromFdINTEL_fn" &&
6409         enable opencl_drm_beignet
6410     check_func_headers "CL/cl_ext.h" clImportMemoryARM &&
6411         enable opencl_drm_arm
6412 fi
6413
6414 if enabled_all opencl vaapi ; then
6415     enabled opencl_drm_beignet && enable opencl_vaapi_beignet
6416     check_type "CL/cl.h CL/va_ext.h" "clCreateFromVA_APIMediaSurfaceINTEL_fn" &&
6417         enable opencl_vaapi_intel_media
6418 fi
6419
6420 if enabled_all opencl dxva2 ; then
6421     check_type "CL/cl_dx9_media_sharing.h" cl_dx9_surface_info_khr &&
6422         enable opencl_dxva2
6423 fi
6424
6425 if enabled_all opencl d3d11va ; then
6426     check_type "CL/cl_d3d11.h" clGetDeviceIDsFromD3D11KHR_fn &&
6427         enable opencl_d3d11
6428 fi
6429
6430 enabled vdpau &&
6431     check_cpp_condition vdpau vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP"
6432
6433 enabled vdpau &&
6434     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6435
6436 enabled crystalhd && check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
6437
6438 if enabled x86; then
6439     case $target_os in
6440         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6441             ;;
6442         *)
6443             disable ffnvcodec cuvid nvdec nvenc
6444             ;;
6445     esac
6446 else
6447     disable ffnvcodec cuvid nvdec nvenc
6448 fi
6449
6450 enabled ffnvcodec && enable cuda
6451
6452 enabled nvenc &&
6453     test_cc -I$source_path <<EOF || disable nvenc
6454 #include <ffnvcodec/nvEncodeAPI.h>
6455 NV_ENCODE_API_FUNCTION_LIST flist;
6456 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6457 int main(void) { return 0; }
6458 EOF
6459
6460 enabled amf &&
6461     check_cpp_condition amf "AMF/core/Version.h" \
6462         "(AMF_VERSION_MAJOR << 48 | AMF_VERSION_MINOR << 32 | AMF_VERSION_RELEASE << 16 | AMF_VERSION_BUILD_NUM) >= 0x0001000400040001"
6463
6464 # Funny iconv installations are not unusual, so check it after all flags have been set
6465 if enabled libc_iconv; then
6466     check_func_headers iconv.h iconv
6467 elif enabled iconv; then
6468     check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6469 fi
6470
6471 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6472
6473 # add some useful compiler flags if supported
6474 check_cflags -Wdeclaration-after-statement
6475 check_cflags -Wall
6476 check_cflags -Wdisabled-optimization
6477 check_cflags -Wpointer-arith
6478 check_cflags -Wredundant-decls
6479 check_cflags -Wwrite-strings
6480 check_cflags -Wtype-limits
6481 check_cflags -Wundef
6482 check_cflags -Wmissing-prototypes
6483 check_cflags -Wno-pointer-to-int-cast
6484 check_cflags -Wstrict-prototypes
6485 check_cflags -Wempty-body
6486
6487 if enabled extra_warnings; then
6488     check_cflags -Wcast-qual
6489     check_cflags -Wextra
6490     check_cflags -Wpedantic
6491 fi
6492
6493 check_disable_warning(){
6494     warning_flag=-W${1#-Wno-}
6495     test_cflags $unknown_warning_flags $warning_flag && add_cflags $1
6496 }
6497
6498 test_cflags -Werror=unused-command-line-argument &&
6499     append unknown_warning_flags "-Werror=unused-command-line-argument"
6500 test_cflags -Werror=unknown-warning-option &&
6501     append unknown_warning_flags "-Werror=unknown-warning-option"
6502
6503 check_disable_warning -Wno-parentheses
6504 check_disable_warning -Wno-switch
6505 check_disable_warning -Wno-format-zero-length
6506 check_disable_warning -Wno-pointer-sign
6507 check_disable_warning -Wno-unused-const-variable
6508 check_disable_warning -Wno-bool-operation
6509
6510 check_disable_warning_headers(){
6511     warning_flag=-W${1#-Wno-}
6512     test_cflags $warning_flag && add_cflags_headers $1
6513 }
6514
6515 check_disable_warning_headers -Wno-deprecated-declarations
6516 check_disable_warning_headers -Wno-unused-variable
6517
6518 test_cc <<EOF && enable blocks_extension
6519 void (^block)(void);
6520 EOF
6521
6522 # add some linker flags
6523 check_ldflags -Wl,--warn-common
6524 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6525 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir && add_ldsoflags -Wl,-rpath,$libdir
6526 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6527
6528 # add some strip flags
6529 check_stripflags -x
6530
6531 enabled neon_clobber_test &&
6532     check_ldflags -Wl,--wrap,avcodec_open2              \
6533                   -Wl,--wrap,avcodec_decode_audio4      \
6534                   -Wl,--wrap,avcodec_decode_video2      \
6535                   -Wl,--wrap,avcodec_decode_subtitle2   \
6536                   -Wl,--wrap,avcodec_encode_audio2      \
6537                   -Wl,--wrap,avcodec_encode_video2      \
6538                   -Wl,--wrap,avcodec_encode_subtitle    \
6539                   -Wl,--wrap,avcodec_send_packet        \
6540                   -Wl,--wrap,avcodec_receive_packet     \
6541                   -Wl,--wrap,avcodec_send_frame         \
6542                   -Wl,--wrap,avcodec_receive_frame      \
6543                   -Wl,--wrap,swr_convert                \
6544                   -Wl,--wrap,avresample_convert ||
6545     disable neon_clobber_test
6546
6547 enabled xmm_clobber_test &&
6548     check_ldflags -Wl,--wrap,avcodec_open2              \
6549                   -Wl,--wrap,avcodec_decode_audio4      \
6550                   -Wl,--wrap,avcodec_decode_video2      \
6551                   -Wl,--wrap,avcodec_decode_subtitle2   \
6552                   -Wl,--wrap,avcodec_encode_audio2      \
6553                   -Wl,--wrap,avcodec_encode_video2      \
6554                   -Wl,--wrap,avcodec_encode_subtitle    \
6555                   -Wl,--wrap,avcodec_send_packet        \
6556                   -Wl,--wrap,avcodec_receive_packet     \
6557                   -Wl,--wrap,avcodec_send_frame         \
6558                   -Wl,--wrap,avcodec_receive_frame      \
6559                   -Wl,--wrap,swr_convert                \
6560                   -Wl,--wrap,avresample_convert         \
6561                   -Wl,--wrap,sws_scale ||
6562     disable xmm_clobber_test
6563
6564 check_ld "cc" proper_dce <<EOF
6565 extern const int array[512];
6566 static inline int func(void) { return array[0]; }
6567 int main(void) { return 0; }
6568 EOF
6569
6570 if enabled proper_dce; then
6571     echo "X { local: *; };" > $TMPV
6572     if test_ldflags -Wl,${version_script},$TMPV; then
6573         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6574         quotes='""'
6575         test_cc <<EOF && enable symver_asm_label
6576 void ff_foo(void) __asm__ ("av_foo@VERSION");
6577 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6578 EOF
6579         test_cc <<EOF && enable symver_gnu_asm
6580 __asm__(".symver ff_foo,av_foo@VERSION");
6581 void ff_foo(void) {}
6582 EOF
6583     fi
6584 fi
6585
6586 if [ -z "$optflags" ]; then
6587     if enabled small; then
6588         optflags=$cflags_size
6589     elif enabled optimizations; then
6590         optflags=$cflags_speed
6591     else
6592         optflags=$cflags_noopt
6593     fi
6594 fi
6595
6596 if [ -z "$nvccflags" ]; then
6597     nvccflags=$nvccflags_default
6598 fi
6599
6600 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6601     nvccflags="$nvccflags -m64"
6602 else
6603     nvccflags="$nvccflags -m32"
6604 fi
6605
6606 check_optflags(){
6607     check_cflags "$@"
6608     enabled lto && check_ldflags "$@"
6609 }
6610
6611 check_optflags $optflags
6612 check_optflags -fno-math-errno
6613 check_optflags -fno-signed-zeros
6614
6615 if enabled lto; then
6616     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6617     check_cflags  -flto
6618     check_ldflags -flto $cpuflags
6619     disable inline_asm_direct_symbol_refs
6620 fi
6621
6622 enabled ftrapv && check_cflags -ftrapv
6623
6624 test_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6625 int x;
6626 EOF
6627
6628
6629 if enabled icc; then
6630     # Just warnings, no remarks
6631     check_cflags -w1
6632     # -wd: Disable following warnings
6633     # 144, 167, 556: -Wno-pointer-sign
6634     # 188: enumerated type mixed with another type
6635     # 1292: attribute "foo" ignored
6636     # 1419: external declaration in primary source file
6637     # 10006: ignoring unknown option -fno-signed-zeros
6638     # 10148: ignoring unknown option -Wno-parentheses
6639     # 10156: ignoring option '-W'; no argument required
6640     # 13200: No EMMS instruction before call to function
6641     # 13203: No EMMS instruction before return from function
6642     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6643     # 11030: Warning unknown option --as-needed
6644     # 10156: ignoring option '-export'; no argument required
6645     check_ldflags -wd10156,11030
6646     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6647     enable ebp_available
6648     # The test above does not test linking
6649     enabled lto && disable symver_asm_label
6650     if enabled x86_32; then
6651         icc_version=$($cc -dumpversion)
6652         test ${icc_version%%.*} -ge 11 &&
6653             check_cflags -falign-stack=maintain-16-byte ||
6654             disable aligned_stack
6655     fi
6656 elif enabled gcc; then
6657     check_optflags -fno-tree-vectorize
6658     check_cflags -Werror=format-security
6659     check_cflags -Werror=implicit-function-declaration
6660     check_cflags -Werror=missing-prototypes
6661     check_cflags -Werror=return-type
6662     check_cflags -Werror=vla
6663     check_cflags -Wformat
6664     check_cflags -fdiagnostics-color=auto
6665     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6666     if enabled x86_32; then
6667         case $target_os in
6668         *bsd*)
6669             # BSDs don't guarantee a 16 byte aligned stack, but we can
6670             # request GCC to try to maintain 16 byte alignment throughout
6671             # function calls. Library entry points that might call assembly
6672             # functions align the stack. (The parameter means 2^4 bytes.)
6673             check_cflags -mpreferred-stack-boundary=4
6674             ;;
6675         esac
6676     fi
6677 elif enabled llvm_gcc; then
6678     check_cflags -mllvm -stack-alignment=16
6679 elif enabled clang; then
6680     if enabled x86_32; then
6681         # Clang doesn't support maintaining alignment without assuming the
6682         # same alignment in every function. If 16 byte alignment would be
6683         # enabled, one would also have to either add attribute_align_arg on
6684         # every single entry point into the libraries or enable -mstackrealign
6685         # (doing stack realignment in every single function).
6686         case $target_os in
6687         mingw32|win32|*bsd*)
6688             disable aligned_stack
6689             ;;
6690         *)
6691             check_cflags -mllvm -stack-alignment=16
6692             check_cflags -mstack-alignment=16
6693             ;;
6694         esac
6695     else
6696         check_cflags -mllvm -stack-alignment=16
6697         check_cflags -mstack-alignment=16
6698     fi
6699     check_cflags -Qunused-arguments
6700     check_cflags -Werror=implicit-function-declaration
6701     check_cflags -Werror=missing-prototypes
6702     check_cflags -Werror=return-type
6703 elif enabled cparser; then
6704     add_cflags -Wno-missing-variable-declarations
6705     add_cflags -Wno-empty-statement
6706 elif enabled armcc; then
6707     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6708     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6709     # 2523: use of inline assembly is deprecated
6710     add_cflags -W${armcc_opt},--diag_suppress=2523
6711     add_cflags -W${armcc_opt},--diag_suppress=1207
6712     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6713     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6714     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6715     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6716 elif enabled pathscale; then
6717     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6718     disable inline_asm
6719 elif enabled_any msvc icl; then
6720     enabled x86_32 && disable aligned_stack
6721     enabled_all x86_32 debug && add_cflags -Oy-
6722     enabled debug && add_ldflags -debug
6723     enable pragma_deprecated
6724     if enabled icl; then
6725         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6726         # (correctly) on icl 13.x.
6727         test_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6728             add_cflags -Qansi-alias
6729         # Some inline asm is not compilable in debug
6730         if enabled debug; then
6731             disable ebp_available
6732             disable ebx_available
6733         fi
6734     fi
6735     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6736     check_cpp_condition log2 crtversion.h "_VC_CRT_MAJOR_VERSION >= 12"
6737     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6738     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6739     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6740     # MSVC 2013 and newer can handle it fine.
6741     # If this declspec fails, force including stdlib.h before the restrict redefinition
6742     # happens in config.h.
6743     if [ $restrict_keyword != restrict ]; then
6744         test_cc <<EOF || add_cflags -FIstdlib.h
6745 __declspec($restrict_keyword) void *foo(int);
6746 EOF
6747     fi
6748     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6749     # Issue has been fixed in MSVC v19.00.24218.
6750     test_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6751         check_cflags -d2SSAOptimizer-
6752     # enable utf-8 source processing on VS2015 U2 and newer
6753     test_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6754         add_cflags -utf-8
6755 fi
6756
6757 for pfx in "" host_; do
6758     varname=${pfx%_}cc_type
6759     eval "type=\$$varname"
6760     if [ "$type" = "msvc" ]; then
6761         test_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6762 static inline int foo(int a) { return a; }
6763 EOF
6764     fi
6765 done
6766
6767 case $as_type in
6768     clang)
6769         add_asflags -Qunused-arguments
6770     ;;
6771 esac
6772
6773 case $ld_type in
6774     clang)
6775         check_ldflags -Qunused-arguments
6776     ;;
6777 esac
6778
6779 enable frame_thread_encoder
6780
6781 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6782
6783 check_deps $CONFIG_LIST       \
6784            $CONFIG_EXTRA      \
6785            $HAVE_LIST         \
6786            $ALL_COMPONENTS    \
6787
6788 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"
6789 enabled avresample && warn "Building with deprecated library libavresample"
6790
6791 if test $target_os = "haiku"; then
6792     disable memalign
6793     disable posix_memalign
6794 fi
6795
6796 flatten_extralibs(){
6797     nested_entries=
6798     list_name=$1
6799     eval list=\$${1}
6800     for entry in $list; do
6801         entry_copy=$entry
6802         resolve entry_copy
6803         flat_entries=
6804         for e in $entry_copy; do
6805             case $e in
6806                 *_extralibs) nested_entries="$nested_entries$e ";;
6807                           *) flat_entries="$flat_entries$e ";;
6808             esac
6809         done
6810         eval $entry="\$flat_entries"
6811     done
6812     append $list_name "$nested_entries"
6813
6814     resolve nested_entries
6815     if test -n "$(filter '*_extralibs' $nested_entries)"; then
6816         flatten_extralibs $list_name
6817     fi
6818 }
6819
6820 flatten_extralibs_wrapper(){
6821     list_name=$1
6822     flatten_extralibs $list_name
6823     unique $list_name
6824     resolve $list_name
6825     eval $list_name=\$\(\$ldflags_filter \$$list_name\)
6826     eval printf \''%s'\' \""\$$list_name"\"
6827 }
6828
6829 for linkunit in $LIBRARY_LIST; do
6830     unset current_extralibs
6831     eval components=\$$(toupper ${linkunit})_COMPONENTS_LIST
6832     for comp in ${components}; do
6833         enabled $comp || continue
6834         comp_extralibs="${comp}_extralibs"
6835         append current_extralibs $comp_extralibs
6836     done
6837     eval prepend ${linkunit}_extralibs $current_extralibs
6838 done
6839
6840 for linkunit in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
6841     eval ${linkunit}_extralibs=\$\(flatten_extralibs_wrapper ${linkunit}_extralibs\)
6842 done
6843
6844 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6845
6846 for thread in $THREADS_LIST; do
6847     if enabled $thread; then
6848         test -n "$thread_type" &&
6849             die "ERROR: Only one thread type must be selected." ||
6850             thread_type="$thread"
6851     fi
6852 done
6853
6854 if disabled stdatomic; then
6855     if enabled atomics_gcc; then
6856         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6857     elif enabled atomics_win32; then
6858         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6859     elif enabled atomics_suncc; then
6860         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6861     elif enabled pthreads; then
6862         add_compat atomics/pthread/stdatomic.o
6863         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6864     else
6865         enabled threads && die "Threading is enabled, but no atomics are available"
6866         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6867     fi
6868 fi
6869
6870 # Check if requested libraries were found.
6871 for lib in $AUTODETECT_LIBS; do
6872     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6873 done
6874
6875 enabled zlib && add_cppflags -DZLIB_CONST
6876
6877 # conditional library dependencies, in any order
6878 enabled afftdn_filter       && prepend avfilter_deps "avcodec"
6879 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6880 enabled afir_filter         && prepend avfilter_deps "avcodec"
6881 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6882 enabled aresample_filter    && prepend avfilter_deps "swresample"
6883 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6884 enabled bm3d_filter         && prepend avfilter_deps "avcodec"
6885 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6886 enabled convolve_filter     && prepend avfilter_deps "avcodec"
6887 enabled deconvolve_filter   && prepend avfilter_deps "avcodec"
6888 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6889 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6890 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6891 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6892 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
6893 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6894 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6895 enabled pan_filter          && prepend avfilter_deps "swresample"
6896 enabled pp_filter           && prepend avfilter_deps "postproc"
6897 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6898 enabled resample_filter && prepend avfilter_deps "avresample"
6899 enabled sab_filter          && prepend avfilter_deps "swscale"
6900 enabled scale_filter    && prepend avfilter_deps "swscale"
6901 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6902 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6903 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6904 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6905 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6906 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
6907 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6908 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6909 enabled spp_filter          && prepend avfilter_deps "avcodec"
6910 enabled sr_filter           && prepend avfilter_deps "avformat swscale"
6911 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6912 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6913 enabled zoompan_filter      && prepend avfilter_deps "swscale"
6914
6915 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6916
6917 #FIXME
6918 enabled_any sdl2_outdev opengl_outdev && enabled sdl2 &&
6919     add_cflags $(filter_out '-Dmain=SDL_main' $sdl2_cflags)
6920
6921 enabled opus_decoder    && prepend avcodec_deps "swresample"
6922
6923 # reorder the items at var $1 to align with the items order at var $2 .
6924 # die if an item at $1 is not at $2 .
6925 reorder_by(){
6926     eval rb_in=\$$1
6927     eval rb_ordered=\$$2
6928
6929     for rb in $rb_in; do
6930         is_in $rb $rb_ordered || die "$rb at \$$1 is not at \$$2"
6931     done
6932
6933     rb_out=
6934     for rb in $rb_ordered; do
6935         is_in $rb $rb_in && rb_out="$rb_out$rb "
6936     done
6937     eval $1=\$rb_out
6938 }
6939
6940 # deps-expand fflib $1:  N x {append all expanded deps; unique}
6941 # within a set of N items, N expansions are enough to expose a cycle.
6942 expand_deps(){
6943     unique ${1}_deps  # required for the early break test.
6944     for dummy in $LIBRARY_LIST; do  # N iteratios
6945         eval deps=\$${1}_deps
6946         append ${1}_deps $(map 'eval echo \$${v}_deps' $deps)
6947         unique ${1}_deps
6948         eval '[ ${#deps} = ${#'${1}_deps'} ]' && break  # doesn't expand anymore
6949     done
6950
6951     eval is_in $1 \$${1}_deps && die "Dependency cycle at ${1}_deps"
6952     reorder_by ${1}_deps LIBRARY_LIST  # linking order is expected later
6953 }
6954
6955 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6956 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6957
6958 map 'expand_deps $v' $LIBRARY_LIST
6959
6960 if test "$quiet" != "yes"; then
6961
6962 echo "install prefix            $prefix"
6963 echo "source path               $source_path"
6964 echo "C compiler                $cc"
6965 echo "C library                 $libc_type"
6966 if test "$host_cc" != "$cc"; then
6967     echo "host C compiler           $host_cc"
6968     echo "host C library            $host_libc_type"
6969 fi
6970 echo "ARCH                      $arch ($cpu)"
6971 if test "$build_suffix" != ""; then
6972     echo "build suffix              $build_suffix"
6973 fi
6974 if test "$progs_suffix" != ""; then
6975     echo "progs suffix              $progs_suffix"
6976 fi
6977 if test "$extra_version" != ""; then
6978     echo "version string suffix     $extra_version"
6979 fi
6980 echo "big-endian                ${bigendian-no}"
6981 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6982 if enabled x86; then
6983     echo "standalone assembly       ${x86asm-no}"
6984     echo "x86 assembler             ${x86asmexe}"
6985     echo "MMX enabled               ${mmx-no}"
6986     echo "MMXEXT enabled            ${mmxext-no}"
6987     echo "3DNow! enabled            ${amd3dnow-no}"
6988     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6989     echo "SSE enabled               ${sse-no}"
6990     echo "SSSE3 enabled             ${ssse3-no}"
6991     echo "AESNI enabled             ${aesni-no}"
6992     echo "AVX enabled               ${avx-no}"
6993     echo "AVX2 enabled              ${avx2-no}"
6994     echo "AVX-512 enabled           ${avx512-no}"
6995     echo "XOP enabled               ${xop-no}"
6996     echo "FMA3 enabled              ${fma3-no}"
6997     echo "FMA4 enabled              ${fma4-no}"
6998     echo "i686 features enabled     ${i686-no}"
6999     echo "CMOV is fast              ${fast_cmov-no}"
7000     echo "EBX available             ${ebx_available-no}"
7001     echo "EBP available             ${ebp_available-no}"
7002 fi
7003 if enabled aarch64; then
7004     echo "NEON enabled              ${neon-no}"
7005     echo "VFP enabled               ${vfp-no}"
7006 fi
7007 if enabled arm; then
7008     echo "ARMv5TE enabled           ${armv5te-no}"
7009     echo "ARMv6 enabled             ${armv6-no}"
7010     echo "ARMv6T2 enabled           ${armv6t2-no}"
7011     echo "VFP enabled               ${vfp-no}"
7012     echo "NEON enabled              ${neon-no}"
7013     echo "THUMB enabled             ${thumb-no}"
7014 fi
7015 if enabled mips; then
7016     echo "MIPS FPU enabled          ${mipsfpu-no}"
7017     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
7018     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
7019     echo "MIPS MSA enabled          ${msa-no}"
7020     echo "LOONGSON MMI enabled      ${mmi-no}"
7021 fi
7022 if enabled ppc; then
7023     echo "AltiVec enabled           ${altivec-no}"
7024     echo "VSX enabled               ${vsx-no}"
7025     echo "POWER8 enabled            ${power8-no}"
7026     echo "PPC 4xx optimizations     ${ppc4xx-no}"
7027     echo "dcbzl available           ${dcbzl-no}"
7028 fi
7029 echo "debug symbols             ${debug-no}"
7030 echo "strip symbols             ${stripping-no}"
7031 echo "optimize for size         ${small-no}"
7032 echo "optimizations             ${optimizations-no}"
7033 echo "static                    ${static-no}"
7034 echo "shared                    ${shared-no}"
7035 echo "postprocessing support    ${postproc-no}"
7036 echo "network support           ${network-no}"
7037 echo "threading support         ${thread_type-no}"
7038 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
7039 echo "texi2html enabled         ${texi2html-no}"
7040 echo "perl enabled              ${perl-no}"
7041 echo "pod2man enabled           ${pod2man-no}"
7042 echo "makeinfo enabled          ${makeinfo-no}"
7043 echo "makeinfo supports HTML    ${makeinfo_html-no}"
7044 test -n "$random_seed" &&
7045     echo "random seed               ${random_seed}"
7046 echo
7047
7048 echo "External libraries:"
7049 print_enabled '' $EXTERNAL_LIBRARY_LIST $EXTERNAL_AUTODETECT_LIBRARY_LIST | print_in_columns
7050 echo
7051
7052 echo "External libraries providing hardware acceleration:"
7053 print_enabled '' $HWACCEL_LIBRARY_LIST $HWACCEL_AUTODETECT_LIBRARY_LIST | print_in_columns
7054 echo
7055
7056 echo "Libraries:"
7057 print_enabled '' $LIBRARY_LIST | print_in_columns
7058 echo
7059
7060 echo "Programs:"
7061 print_enabled '' $PROGRAM_LIST | print_in_columns
7062 echo
7063
7064 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
7065     echo "Enabled ${type}s:"
7066     eval list=\$$(toupper $type)_LIST
7067     print_enabled '_*' $list | print_in_columns
7068     echo
7069 done
7070
7071 if test -n "$ignore_tests"; then
7072     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
7073     echo "Ignored FATE tests:"
7074     echo $ignore_tests | print_in_columns
7075     echo
7076 fi
7077
7078 echo "License: $license"
7079
7080 fi # test "$quiet" != "yes"
7081
7082 if test -n "$WARNINGS"; then
7083     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
7084     enabled fatal_warnings && exit 1
7085 fi
7086
7087 test -e Makefile || echo "include $source_path/Makefile" > Makefile
7088
7089 esc(){
7090     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
7091 }
7092
7093 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
7094
7095 enabled stripping || strip="echo skipping strip"
7096 enabled stripping || striptype=""
7097
7098 config_files="$TMPH ffbuild/config.mak doc/config.texi"
7099
7100 cat > ffbuild/config.mak <<EOF
7101 # Automatically generated by configure - do not modify!
7102 ifndef FFMPEG_CONFIG_MAK
7103 FFMPEG_CONFIG_MAK=1
7104 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
7105 prefix=$prefix
7106 LIBDIR=\$(DESTDIR)$libdir
7107 SHLIBDIR=\$(DESTDIR)$shlibdir
7108 INCDIR=\$(DESTDIR)$incdir
7109 BINDIR=\$(DESTDIR)$bindir
7110 DATADIR=\$(DESTDIR)$datadir
7111 DOCDIR=\$(DESTDIR)$docdir
7112 MANDIR=\$(DESTDIR)$mandir
7113 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
7114 INSTALL_NAME_DIR=$install_name_dir
7115 SRC_PATH=$source_path
7116 SRC_LINK=$source_link
7117 ifndef MAIN_MAKEFILE
7118 SRC_PATH:=\$(SRC_PATH:.%=..%)
7119 endif
7120 CC_IDENT=$cc_ident
7121 ARCH=$arch
7122 INTRINSICS=$intrinsics
7123 EXTERN_PREFIX=$extern_prefix
7124 CC=$cc
7125 CXX=$cxx
7126 AS=$as
7127 OBJCC=$objcc
7128 LD=$ld
7129 DEPCC=$dep_cc
7130 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
7131 DEPAS=$as
7132 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
7133 X86ASM=$x86asmexe
7134 DEPX86ASM=$x86asmexe
7135 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
7136 AR=$ar
7137 ARFLAGS=$arflags
7138 AR_O=$ar_o
7139 AR_CMD=$ar
7140 NM_CMD=$nm
7141 RANLIB=$ranlib
7142 STRIP=$strip
7143 STRIPTYPE=$striptype
7144 NVCC=$nvcc
7145 CP=cp -p
7146 LN_S=$ln_s
7147 CPPFLAGS=$CPPFLAGS
7148 CFLAGS=$CFLAGS
7149 CXXFLAGS=$CXXFLAGS
7150 OBJCFLAGS=$OBJCFLAGS
7151 ASFLAGS=$ASFLAGS
7152 NVCCFLAGS=$nvccflags
7153 AS_C=$AS_C
7154 AS_O=$AS_O
7155 OBJCC_C=$OBJCC_C
7156 OBJCC_E=$OBJCC_E
7157 OBJCC_O=$OBJCC_O
7158 CC_C=$CC_C
7159 CC_E=$CC_E
7160 CC_O=$CC_O
7161 CXX_C=$CXX_C
7162 CXX_O=$CXX_O
7163 NVCC_C=$NVCC_C
7164 NVCC_O=$NVCC_O
7165 LD_O=$LD_O
7166 X86ASM_O=$X86ASM_O
7167 LD_LIB=$LD_LIB
7168 LD_PATH=$LD_PATH
7169 DLLTOOL=$dlltool
7170 WINDRES=$windres
7171 DEPWINDRES=$dep_cc
7172 DOXYGEN=$doxygen
7173 LDFLAGS=$LDFLAGS
7174 LDEXEFLAGS=$LDEXEFLAGS
7175 LDSOFLAGS=$LDSOFLAGS
7176 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
7177 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
7178 X86ASMFLAGS=$X86ASMFLAGS
7179 BUILDSUF=$build_suffix
7180 PROGSSUF=$progs_suffix
7181 FULLNAME=$FULLNAME
7182 LIBPREF=$LIBPREF
7183 LIBSUF=$LIBSUF
7184 LIBNAME=$LIBNAME
7185 SLIBPREF=$SLIBPREF
7186 SLIBSUF=$SLIBSUF
7187 EXESUF=$EXESUF
7188 EXTRA_VERSION=$extra_version
7189 CCDEP=$CCDEP
7190 CXXDEP=$CXXDEP
7191 CCDEP_FLAGS=$CCDEP_FLAGS
7192 ASDEP=$ASDEP
7193 ASDEP_FLAGS=$ASDEP_FLAGS
7194 X86ASMDEP=$X86ASMDEP
7195 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
7196 CC_DEPFLAGS=$CC_DEPFLAGS
7197 AS_DEPFLAGS=$AS_DEPFLAGS
7198 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
7199 HOSTCC=$host_cc
7200 HOSTLD=$host_ld
7201 HOSTCFLAGS=$host_cflags
7202 HOSTCPPFLAGS=$host_cppflags
7203 HOSTEXESUF=$HOSTEXESUF
7204 HOSTLDFLAGS=$host_ldflags
7205 HOSTEXTRALIBS=$host_extralibs
7206 DEPHOSTCC=$host_cc
7207 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
7208 HOSTCCDEP=$HOSTCCDEP
7209 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
7210 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
7211 HOSTCC_C=$HOSTCC_C
7212 HOSTCC_O=$HOSTCC_O
7213 HOSTLD_O=$HOSTLD_O
7214 TARGET_EXEC=$target_exec $target_exec_args
7215 TARGET_PATH=$target_path
7216 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
7217 CFLAGS-ffplay=${sdl2_cflags}
7218 CFLAGS_HEADERS=$CFLAGS_HEADERS
7219 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
7220 EXTRALIBS=$extralibs
7221 COMPAT_OBJS=$compat_objs
7222 INSTALL=$install
7223 LIBTARGET=${LIBTARGET}
7224 SLIBNAME=${SLIBNAME}
7225 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
7226 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
7227 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
7228 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
7229 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
7230 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
7231 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
7232 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
7233 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
7234 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
7235 NOREDZONE_FLAGS=$noredzone_flags
7236 LIBFUZZER_PATH=$libfuzzer_path
7237 IGNORE_TESTS=$ignore_tests
7238 EOF
7239
7240 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
7241
7242 for entry in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
7243     eval echo "EXTRALIBS-${entry}=\$${entry}_extralibs" >> ffbuild/config.mak
7244 done
7245
7246 cat > $TMPH <<EOF
7247 /* Automatically generated by configure - do not modify! */
7248 #ifndef FFMPEG_CONFIG_H
7249 #define FFMPEG_CONFIG_H
7250 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
7251 #define FFMPEG_LICENSE "$(c_escape $license)"
7252 #define CONFIG_THIS_YEAR 2018
7253 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
7254 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
7255 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
7256 #define av_restrict $restrict_keyword
7257 #define EXTERN_PREFIX "${extern_prefix}"
7258 #define EXTERN_ASM ${extern_prefix}
7259 #define BUILDSUF "$build_suffix"
7260 #define SLIBSUF "$SLIBSUF"
7261 #define HAVE_MMX2 HAVE_MMXEXT
7262 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
7263 EOF
7264
7265 test -n "$assert_level" &&
7266     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
7267
7268 test -n "$malloc_prefix" &&
7269     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
7270
7271 if enabled x86asm; then
7272     append config_files $TMPASM
7273     cat > $TMPASM <<EOF
7274 ; Automatically generated by configure - do not modify!
7275 EOF
7276 fi
7277
7278 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
7279
7280
7281 mkdir -p doc
7282 mkdir -p tests
7283 mkdir -p tests/api
7284 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
7285
7286 print_config ARCH_   "$config_files" $ARCH_LIST
7287 print_config HAVE_   "$config_files" $HAVE_LIST
7288 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
7289                                      $CONFIG_EXTRA      \
7290                                      $ALL_COMPONENTS    \
7291
7292 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
7293 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
7294
7295 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
7296 cp_if_changed $TMPH config.h
7297 touch ffbuild/.config
7298
7299 enabled x86asm && cp_if_changed $TMPASM config.asm
7300
7301 cat > $TMPH <<EOF
7302 /* Generated by ffmpeg configure */
7303 #ifndef AVUTIL_AVCONFIG_H
7304 #define AVUTIL_AVCONFIG_H
7305 EOF
7306
7307 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
7308
7309 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
7310
7311 cp_if_changed $TMPH libavutil/avconfig.h
7312
7313 # full_filter_name_foo=vf_foo
7314 # full_filter_name_bar=asrc_bar
7315 # ...
7316 eval "$(sed -n "s/^extern AVFilter ff_\([avfsinkrc]\{2,5\}\)_\(.*\);/full_filter_name_\2=\1_\2/p" $source_path/libavfilter/allfilters.c)"
7317
7318 # generate the lists of enabled components
7319 print_enabled_components(){
7320     file=$1
7321     struct_name=$2
7322     name=$3
7323     shift 3
7324     echo "static const $struct_name * const $name[] = {" > $TMPH
7325     for c in $*; do
7326         if enabled $c; then
7327             case $name in
7328                 filter_list)
7329                     eval c=\$full_filter_name_${c%_filter}
7330                 ;;
7331                 indev_list)
7332                     c=${c%_indev}_demuxer
7333                 ;;
7334                 outdev_list)
7335                     c=${c%_outdev}_muxer
7336                 ;;
7337             esac
7338             printf "    &ff_%s,\n" $c >> $TMPH
7339         fi
7340     done
7341     if [ "$name" = "filter_list" ]; then
7342         for c in asrc_abuffer vsrc_buffer asink_abuffer vsink_buffer; do
7343             printf "    &ff_%s,\n" $c >> $TMPH
7344         done
7345     fi
7346     echo "    NULL };" >> $TMPH
7347     cp_if_changed $TMPH $file
7348 }
7349
7350 print_enabled_components libavfilter/filter_list.c AVFilter filter_list $FILTER_LIST
7351 print_enabled_components libavcodec/codec_list.c AVCodec codec_list $CODEC_LIST
7352 print_enabled_components libavcodec/parser_list.c AVCodecParser parser_list $PARSER_LIST
7353 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
7354 print_enabled_components libavformat/demuxer_list.c AVInputFormat demuxer_list $DEMUXER_LIST
7355 print_enabled_components libavformat/muxer_list.c AVOutputFormat muxer_list $MUXER_LIST
7356 print_enabled_components libavdevice/indev_list.c AVInputFormat indev_list $INDEV_LIST
7357 print_enabled_components libavdevice/outdev_list.c AVOutputFormat outdev_list $OUTDEV_LIST
7358 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
7359
7360 # Settings for pkg-config files
7361
7362 cat > $TMPH <<EOF
7363 # Automatically generated by configure - do not modify!
7364 shared=$shared
7365 build_suffix=$build_suffix
7366 prefix=$prefix
7367 libdir=$libdir
7368 incdir=$incdir
7369 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
7370 source_path=${source_path}
7371 LIBPREF=${LIBPREF}
7372 LIBSUF=${LIBSUF}
7373 extralibs_avutil="$avutil_extralibs"
7374 extralibs_avcodec="$avcodec_extralibs"
7375 extralibs_avformat="$avformat_extralibs"
7376 extralibs_avdevice="$avdevice_extralibs"
7377 extralibs_avfilter="$avfilter_extralibs"
7378 extralibs_avresample="$avresample_extralibs"
7379 extralibs_postproc="$postproc_extralibs"
7380 extralibs_swscale="$swscale_extralibs"
7381 extralibs_swresample="$swresample_extralibs"
7382 EOF
7383
7384 for lib in $LIBRARY_LIST; do
7385     lib_deps="$(eval echo \$${lib}_deps)"
7386     echo ${lib}_deps=\"$lib_deps\" >> $TMPH
7387 done
7388
7389 cp_if_changed $TMPH ffbuild/config.sh