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-libdavs2        enable AVS2 decoding via libdavs2 [no]
 230   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 231                            and libraw1394 [no]
 232   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 233   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 234   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
 235   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
 236   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
 237   --enable-libgme          enable Game Music Emu via libgme [no]
 238   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 239   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 240   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 241   --enable-libjack         enable JACK audio sound server [no]
 242   --enable-libklvanc       enable Kernel Labs VANC processing [no]
 243   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
 244   --enable-liblensfun      enable lensfun lens correction [no]
 245   --enable-libmodplug      enable ModPlug via libmodplug [no]
 246   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 247   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 248   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 249   --enable-libopencv       enable video filtering via libopencv [no]
 250   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 251   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 252   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
 253   --enable-libopus         enable Opus de/encoding via libopus [no]
 254   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 255   --enable-librsvg         enable SVG rasterization via librsvg [no]
 256   --enable-librubberband   enable rubberband needed for rubberband filter [no]
 257   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 258   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 259   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 260   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
 261   --enable-libsoxr         enable Include libsoxr resampling [no]
 262   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 263   --enable-libsrt          enable Haivision SRT protocol via libsrt [no]
 264   --enable-libssh          enable SFTP protocol via libssh [no]
 265   --enable-libtensorflow   enable TensorFlow as a DNN module backend
 266                            for DNN based filters like sr [no]
 267   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
 268   --enable-libtheora       enable Theora encoding via libtheora [no]
 269   --enable-libtls          enable LibreSSL (via libtls), needed for https support
 270                            if openssl, gnutls or mbedtls is not used [no]
 271   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 272   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 273   --enable-libvidstab      enable video stabilization using vid.stab [no]
 274   --enable-libvmaf         enable vmaf filter via libvmaf [no]
 275   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 276   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 277                            native implementation exists [no]
 278   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 279   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 280   --enable-libwebp         enable WebP encoding via libwebp [no]
 281   --enable-libx264         enable H.264 encoding via x264 [no]
 282   --enable-libx265         enable HEVC encoding via x265 [no]
 283   --enable-libxavs         enable AVS encoding via xavs [no]
 284   --enable-libxavs2        enable AVS2 encoding via xavs2 [no]
 285   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
 286   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
 287   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
 288   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
 289   --enable-libxvid         enable Xvid encoding via xvidcore,
 290                            native MPEG-4/Xvid encoder exists [no]
 291   --enable-libxml2         enable XML parsing using the C library libxml2, needed
 292                            for dash demuxing support [no]
 293   --enable-libzimg         enable z.lib, needed for zscale filter [no]
 294   --enable-libzmq          enable message passing via libzmq [no]
 295   --enable-libzvbi         enable teletext support via libzvbi [no]
 296   --enable-lv2             enable LV2 audio filtering [no]
 297   --disable-lzma           disable lzma [autodetect]
 298   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
 299   --enable-libndi_newtek   enable Newteck NDI I/O support [no]
 300   --enable-mbedtls         enable mbedTLS, needed for https support
 301                            if openssl, gnutls or libtls is not used [no]
 302   --enable-mediacodec      enable Android MediaCodec support [no]
 303   --enable-libmysofa       enable libmysofa, needed for sofalizer filter [no]
 304   --enable-openal          enable OpenAL 1.1 capture support [no]
 305   --enable-opencl          enable OpenCL processing [no]
 306   --enable-opengl          enable OpenGL rendering [no]
 307   --enable-openssl         enable openssl, needed for https support
 308                            if gnutls, libtls or mbedtls is not used [no]
 309   --disable-sndio          disable sndio support [autodetect]
 310   --disable-schannel       disable SChannel SSP, needed for TLS support on
 311                            Windows if openssl and gnutls are not used [autodetect]
 312   --disable-sdl2           disable sdl2 [autodetect]
 313   --disable-securetransport disable Secure Transport, needed for TLS support
 314                            on OSX if openssl and gnutls are not used [autodetect]
 315   --enable-vapoursynth     enable VapourSynth demuxer [no]
 316   --disable-xlib           disable xlib [autodetect]
 317   --disable-zlib           disable zlib [autodetect]
 318
 319   The following libraries provide various hardware acceleration features:
 320   --disable-amf            disable AMF video encoding code [autodetect]
 321   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
 322   --enable-cuda-sdk        enable CUDA features that require the CUDA SDK [no]
 323   --disable-cuvid          disable Nvidia CUVID support [autodetect]
 324   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
 325   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
 326   --disable-ffnvcodec      disable dynamically linked Nvidia code [autodetect]
 327   --enable-libdrm          enable DRM code (Linux) [no]
 328   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
 329   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
 330   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
 331   --disable-nvdec          disable Nvidia video decoding acceleration (via hwaccel) [autodetect]
 332   --disable-nvenc          disable Nvidia video encoding code [autodetect]
 333   --enable-omx             enable OpenMAX IL code [no]
 334   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
 335   --enable-rkmpp           enable Rockchip Media Process Platform code [no]
 336   --disable-v4l2-m2m       disable V4L2 mem2mem code [autodetect]
 337   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
 338   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
 339   --disable-videotoolbox   disable VideoToolbox code [autodetect]
 340
 341 Toolchain options:
 342   --arch=ARCH              select architecture [$arch]
 343   --cpu=CPU                select the minimum required CPU (affects
 344                            instruction selection, may crash on older CPUs)
 345   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 346   --progs-suffix=SUFFIX    program name suffix []
 347   --enable-cross-compile   assume a cross-compiler is used
 348   --sysroot=PATH           root of cross-build tree
 349   --sysinclude=PATH        location of cross-build system headers
 350   --target-os=OS           compiler targets OS [$target_os]
 351   --target-exec=CMD        command to run executables on target
 352   --target-path=DIR        path to view of build directory on target
 353   --target-samples=DIR     path to samples directory on target
 354   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 355   --toolchain=NAME         set tool defaults according to NAME
 356                            (gcc-asan, clang-asan, gcc-msan, clang-msan,
 357                            gcc-tsan, clang-tsan, gcc-usan, clang-usan,
 358                            valgrind-massif, valgrind-memcheck,
 359                            msvc, icl, gcov, llvm-cov, hardened)
 360   --nm=NM                  use nm tool NM [$nm_default]
 361   --ar=AR                  use archive tool AR [$ar_default]
 362   --as=AS                  use assembler AS [$as_default]
 363   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
 364   --strip=STRIP            use strip tool STRIP [$strip_default]
 365   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 366   --x86asmexe=EXE          use nasm-compatible assembler EXE [$x86asmexe_default]
 367   --cc=CC                  use C compiler CC [$cc_default]
 368   --cxx=CXX                use C compiler CXX [$cxx_default]
 369   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 370   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 371   --nvcc=NVCC              use Nvidia CUDA compiler NVCC [$nvcc_default]
 372   --ld=LD                  use linker LD [$ld_default]
 373   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 374   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 375   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 376   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 377   --host-cc=HOSTCC         use host C compiler HOSTCC
 378   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 379   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 380   --host-ld=HOSTLD         use host linker HOSTLD
 381   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 382   --host-libs=HLIBS        use libs HLIBS when linking for host
 383   --host-os=OS             compiler host OS [$target_os]
 384   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 385   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 386   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 387   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 388   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 389   --extra-ldsoflags=ELDFLAGS add ELDFLAGS to LDSOFLAGS [$LDSOFLAGS]
 390   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 391   --extra-version=STRING   version string suffix []
 392   --optflags=OPTFLAGS      override optimization-related compiler flags
 393   --nvccflags=NVCCFLAGS    override nvcc flags [$nvccflags_default]
 394   --build-suffix=SUFFIX    library name suffix []
 395   --enable-pic             build position-independent code
 396   --enable-thumb           compile for Thumb instruction set
 397   --enable-lto             use link-time optimization
 398   --env="ENV=override"     override the environment variables
 399
 400 Advanced options (experts only):
 401   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 402   --custom-allocator=NAME  use a supported custom allocator
 403   --disable-symver         disable symbol versioning
 404   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 405   --disable-safe-bitstream-reader
 406                            disable buffer boundary checking in bitreaders
 407                            (faster, but may crash)
 408   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 409
 410 Optimization options (experts only):
 411   --disable-asm            disable all assembly optimizations
 412   --disable-altivec        disable AltiVec optimizations
 413   --disable-vsx            disable VSX optimizations
 414   --disable-power8         disable POWER8 optimizations
 415   --disable-amd3dnow       disable 3DNow! optimizations
 416   --disable-amd3dnowext    disable 3DNow! extended optimizations
 417   --disable-mmx            disable MMX optimizations
 418   --disable-mmxext         disable MMXEXT optimizations
 419   --disable-sse            disable SSE optimizations
 420   --disable-sse2           disable SSE2 optimizations
 421   --disable-sse3           disable SSE3 optimizations
 422   --disable-ssse3          disable SSSE3 optimizations
 423   --disable-sse4           disable SSE4 optimizations
 424   --disable-sse42          disable SSE4.2 optimizations
 425   --disable-avx            disable AVX optimizations
 426   --disable-xop            disable XOP optimizations
 427   --disable-fma3           disable FMA3 optimizations
 428   --disable-fma4           disable FMA4 optimizations
 429   --disable-avx2           disable AVX2 optimizations
 430   --disable-avx512         disable AVX-512 optimizations
 431   --disable-aesni          disable AESNI optimizations
 432   --disable-armv5te        disable armv5te optimizations
 433   --disable-armv6          disable armv6 optimizations
 434   --disable-armv6t2        disable armv6t2 optimizations
 435   --disable-vfp            disable VFP optimizations
 436   --disable-neon           disable NEON optimizations
 437   --disable-inline-asm     disable use of inline assembly
 438   --disable-x86asm         disable use of standalone x86 assembly
 439   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
 440   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 441   --disable-msa            disable MSA optimizations
 442   --disable-mipsfpu        disable floating point MIPS optimizations
 443   --disable-mmi            disable Loongson SIMD optimizations
 444   --disable-fast-unaligned consider unaligned accesses slow
 445
 446 Developer options (useful when working on FFmpeg itself):
 447   --disable-debug          disable debugging symbols
 448   --enable-debug=LEVEL     set the debug level [$debuglevel]
 449   --disable-optimizations  disable compiler optimizations
 450   --enable-extra-warnings  enable more compiler warnings
 451   --disable-stripping      disable stripping of executables and shared libraries
 452   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 453                            2 causes a slowdown at runtime.
 454   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 455   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 456                            leaks and errors, using the specified valgrind binary.
 457                            Cannot be combined with --target-exec
 458   --enable-ftrapv          Trap arithmetic overflows
 459   --samples=PATH           location of test samples for FATE, if not set use
 460                            \$FATE_SAMPLES at make invocation time.
 461   --enable-neon-clobber-test check NEON registers for clobbering (should be
 462                            used only for debugging purposes)
 463   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 464                            should be used only for debugging purposes)
 465   --enable-random          randomly enable/disable components
 466   --disable-random
 467   --enable-random=LIST     randomly enable/disable specific components or
 468   --disable-random=LIST    component groups. LIST is a comma-separated list
 469                            of NAME[:PROB] entries where NAME is a component
 470                            (group) and PROB the probability associated with
 471                            NAME (default 0.5).
 472   --random-seed=VALUE      seed value for --enable/disable-random
 473   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 474                            (only applies to --disable-optimizations builds)
 475   --enable-osfuzz          Enable building fuzzer tool
 476   --libfuzzer=PATH         path to libfuzzer
 477   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
 478                            in the name) of tests whose result is ignored
 479   --enable-linux-perf      enable Linux Performance Monitor API
 480
 481 NOTE: Object files are built at the place where configure is launched.
 482 EOF
 483   exit 0
 484 }
 485
 486 if test -t 1 && which tput >/dev/null 2>&1; then
 487     ncolors=$(tput colors)
 488     if test -n "$ncolors" && test $ncolors -ge 8; then
 489         bold_color=$(tput bold)
 490         warn_color=$(tput setaf 3)
 491         error_color=$(tput setaf 1)
 492         reset_color=$(tput sgr0)
 493     fi
 494     # 72 used instead of 80 since that's the default of pr
 495     ncols=$(tput cols)
 496 fi
 497 : ${ncols:=72}
 498
 499 log(){
 500     echo "$@" >> $logfile
 501 }
 502
 503 log_file(){
 504     log BEGIN $1
 505     pr -n -t $1 >> $logfile
 506     log END $1
 507 }
 508
 509 warn(){
 510     log "WARNING: $*"
 511     WARNINGS="${WARNINGS}WARNING: $*\n"
 512 }
 513
 514 die(){
 515     log "$@"
 516     echo "$error_color$bold_color$@$reset_color"
 517     cat <<EOF
 518
 519 If you think configure made a mistake, make sure you are using the latest
 520 version from Git.  If the latest version fails, report the problem to the
 521 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 522 EOF
 523     if disabled logging; then
 524         cat <<EOF
 525 Rerun configure with logging enabled (do not use --disable-logging), and
 526 include the log this produces with your report.
 527 EOF
 528     else
 529         cat <<EOF
 530 Include the log file "$logfile" produced by configure as this will help
 531 solve the problem.
 532 EOF
 533     fi
 534     exit 1
 535 }
 536
 537 # Avoid locale weirdness, besides we really just want to translate ASCII.
 538 toupper(){
 539     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 540 }
 541
 542 tolower(){
 543     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 544 }
 545
 546 c_escape(){
 547     echo "$*" | sed 's/["\\]/\\\0/g'
 548 }
 549
 550 sh_quote(){
 551     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 552     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 553     echo "$v"
 554 }
 555
 556 cleanws(){
 557     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 558 }
 559
 560 filter(){
 561     pat=$1
 562     shift
 563     for v; do
 564         eval "case '$v' in $pat) printf '%s ' '$v' ;; esac"
 565     done
 566 }
 567
 568 filter_out(){
 569     pat=$1
 570     shift
 571     for v; do
 572         eval "case '$v' in $pat) ;; *) printf '%s ' '$v' ;; esac"
 573     done
 574 }
 575
 576 map(){
 577     m=$1
 578     shift
 579     for v; do eval $m; done
 580 }
 581
 582 add_suffix(){
 583     suffix=$1
 584     shift
 585     for v; do echo ${v}${suffix}; done
 586 }
 587
 588 remove_suffix(){
 589     suffix=$1
 590     shift
 591     for v; do echo ${v%$suffix}; done
 592 }
 593
 594 set_all(){
 595     value=$1
 596     shift
 597     for var in $*; do
 598         eval $var=$value
 599     done
 600 }
 601
 602 set_weak(){
 603     value=$1
 604     shift
 605     for var; do
 606         eval : \${$var:=$value}
 607     done
 608 }
 609
 610 sanitize_var_name(){
 611     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 612 }
 613
 614 set_sanitized(){
 615     var=$1
 616     shift
 617     eval $(sanitize_var_name "$var")='$*'
 618 }
 619
 620 get_sanitized(){
 621     eval echo \$$(sanitize_var_name "$1")
 622 }
 623
 624 pushvar(){
 625     for pvar in $*; do
 626         eval level=\${${pvar}_level:=0}
 627         eval ${pvar}_${level}="\$$pvar"
 628         eval ${pvar}_level=$(($level+1))
 629     done
 630 }
 631
 632 popvar(){
 633     for pvar in $*; do
 634         eval level=\${${pvar}_level:-0}
 635         test $level = 0 && continue
 636         eval level=$(($level-1))
 637         eval $pvar="\${${pvar}_${level}}"
 638         eval ${pvar}_level=$level
 639         eval unset ${pvar}_${level}
 640     done
 641 }
 642
 643 request(){
 644     for var in $*; do
 645         eval ${var}_requested=yes
 646         eval $var=
 647     done
 648 }
 649
 650 enable(){
 651     set_all yes $*
 652 }
 653
 654 disable(){
 655     set_all no $*
 656 }
 657
 658 enable_weak(){
 659     set_weak yes $*
 660 }
 661
 662 disable_weak(){
 663     set_weak no $*
 664 }
 665
 666 enable_sanitized(){
 667     for var; do
 668         enable $(sanitize_var_name $var)
 669     done
 670 }
 671
 672 disable_sanitized(){
 673     for var; do
 674         disable $(sanitize_var_name $var)
 675     done
 676 }
 677
 678 do_enable_deep(){
 679     for var; do
 680         enabled $var && continue
 681         set -- $var
 682         eval enable_deep \$${var}_select
 683         var=$1
 684         eval enable_deep_weak \$${var}_suggest
 685     done
 686 }
 687
 688 enable_deep(){
 689     do_enable_deep $*
 690     enable $*
 691 }
 692
 693 enable_deep_weak(){
 694     for var; do
 695         disabled $var && continue
 696         set -- $var
 697         do_enable_deep $var
 698         var=$1
 699         enable_weak $var
 700     done
 701 }
 702
 703 requested(){
 704     test "${1#!}" = "$1" && op="=" || op="!="
 705     eval test "x\$${1#!}_requested" $op "xyes"
 706 }
 707
 708 enabled(){
 709     test "${1#!}" = "$1" && op="=" || op="!="
 710     eval test "x\$${1#!}" $op "xyes"
 711 }
 712
 713 disabled(){
 714     test "${1#!}" = "$1" && op="=" || op="!="
 715     eval test "x\$${1#!}" $op "xno"
 716 }
 717
 718 enabled_all(){
 719     for opt; do
 720         enabled $opt || return 1
 721     done
 722 }
 723
 724 disabled_all(){
 725     for opt; do
 726         disabled $opt || return 1
 727     done
 728 }
 729
 730 enabled_any(){
 731     for opt; do
 732         enabled $opt && return 0
 733     done
 734 }
 735
 736 disabled_any(){
 737     for opt; do
 738         disabled $opt && return 0
 739     done
 740     return 1
 741 }
 742
 743 set_default(){
 744     for opt; do
 745         eval : \${$opt:=\$${opt}_default}
 746     done
 747 }
 748
 749 is_in(){
 750     value=$1
 751     shift
 752     for var in $*; do
 753         [ $var = $value ] && return 0
 754     done
 755     return 1
 756 }
 757
 758 # The cfg loop is very hot (several thousands iterations), and in bash also
 759 # potentialy quite slow. Try to abort the iterations early, preferably without
 760 # calling functions. 70%+ of the time cfg is already done or without deps.
 761 check_deps(){
 762     for cfg; do
 763         eval [ x\$${cfg}_checking = xdone ] && continue
 764         eval [ x\$${cfg}_checking = xinprogress ] && die "Circular dependency for $cfg."
 765
 766         eval "
 767         dep_all=\$${cfg}_deps
 768         dep_any=\$${cfg}_deps_any
 769         dep_con=\$${cfg}_conflict
 770         dep_sel=\$${cfg}_select
 771         dep_sgs=\$${cfg}_suggest
 772         dep_ifa=\$${cfg}_if
 773         dep_ifn=\$${cfg}_if_any
 774         "
 775
 776         # most of the time here $cfg has no deps - avoid costly no-op work
 777         if [ "$dep_all$dep_any$dep_con$dep_sel$dep_sgs$dep_ifa$dep_ifn" ]; then
 778             eval ${cfg}_checking=inprogress
 779
 780             set -- $cfg "$dep_all" "$dep_any" "$dep_con" "$dep_sel" "$dep_sgs" "$dep_ifa" "$dep_ifn"
 781             check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
 782             cfg=$1; dep_all=$2; dep_any=$3; dep_con=$4; dep_sel=$5 dep_sgs=$6; dep_ifa=$7; dep_ifn=$8
 783
 784             [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 785             [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 786             enabled_all  $dep_all || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not all dependencies are satisfied: $dep_all"; }
 787             enabled_any  $dep_any || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not any dependency is satisfied: $dep_any"; }
 788             disabled_all $dep_con || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some conflicting dependencies are unsatisfied: $dep_con"; }
 789             disabled_any $dep_sel && { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some selected dependency is unsatisfied: $dep_sel"; }
 790
 791             enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
 792
 793             for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
 794                 # filter out library deps, these do not belong in extralibs
 795                 is_in $dep $LIBRARY_LIST && continue
 796                 enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
 797             done
 798         fi
 799
 800         eval ${cfg}_checking=done
 801     done
 802 }
 803
 804 print_config(){
 805     pfx=$1
 806     files=$2
 807     shift 2
 808     map 'eval echo "$v \${$v:-no}"' "$@" |
 809     awk "BEGIN { split(\"$files\", files) }
 810         {
 811             c = \"$pfx\" toupper(\$1);
 812             v = \$2;
 813             sub(/yes/, 1, v);
 814             sub(/no/,  0, v);
 815             for (f in files) {
 816                 file = files[f];
 817                 if (file ~ /\\.h\$/) {
 818                     printf(\"#define %s %d\\n\", c, v) >>file;
 819                 } else if (file ~ /\\.asm\$/) {
 820                     printf(\"%%define %s %d\\n\", c, v) >>file;
 821                 } else if (file ~ /\\.mak\$/) {
 822                     n = -v ? \"\" : \"!\";
 823                     printf(\"%s%s=yes\\n\", n, c) >>file;
 824                 } else if (file ~ /\\.texi\$/) {
 825                     pre = -v ? \"\" : \"@c \";
 826                     yesno = \$2;
 827                     c2 = tolower(c);
 828                     gsub(/_/, \"-\", c2);
 829                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 830                 }
 831             }
 832         }"
 833 }
 834
 835 print_enabled(){
 836     suf=$1
 837     shift
 838     for v; do
 839         enabled $v && printf "%s\n" ${v%$suf}
 840     done
 841 }
 842
 843 append(){
 844     var=$1
 845     shift
 846     eval "$var=\"\$$var $*\""
 847 }
 848
 849 prepend(){
 850     var=$1
 851     shift
 852     eval "$var=\"$* \$$var\""
 853 }
 854
 855 reverse () {
 856     eval '
 857         reverse_out=
 858         for v in $'$1'; do
 859             reverse_out="$v $reverse_out"
 860         done
 861         '$1'=$reverse_out
 862     '
 863 }
 864
 865 # keeps the last occurence of each non-unique item
 866 unique(){
 867     unique_out=
 868     eval unique_in=\$$1
 869     reverse unique_in
 870     for v in $unique_in; do
 871         # " $unique_out" +space such that every item is surrounded with spaces
 872         case " $unique_out" in *" $v "*) continue; esac  # already in list
 873         unique_out="$unique_out$v "
 874     done
 875     reverse unique_out
 876     eval $1=\$unique_out
 877 }
 878
 879 resolve(){
 880     resolve_out=
 881     eval resolve_in=\$$1
 882     for v in $resolve_in; do
 883         eval 'resolve_out="$resolve_out$'$v' "'
 884     done
 885     eval $1=\$resolve_out
 886 }
 887
 888 add_cppflags(){
 889     append CPPFLAGS "$@"
 890 }
 891
 892 add_cflags(){
 893     append CFLAGS $($cflags_filter "$@")
 894 }
 895
 896 add_cflags_headers(){
 897     append CFLAGS_HEADERS $($cflags_filter "$@")
 898 }
 899
 900 add_cxxflags(){
 901     append CXXFLAGS $($cflags_filter "$@")
 902 }
 903
 904 add_objcflags(){
 905     append OBJCFLAGS $($objcflags_filter "$@")
 906 }
 907
 908 add_asflags(){
 909     append ASFLAGS $($asflags_filter "$@")
 910 }
 911
 912 add_ldflags(){
 913     append LDFLAGS $($ldflags_filter "$@")
 914 }
 915
 916 add_ldexeflags(){
 917     append LDEXEFLAGS $($ldflags_filter "$@")
 918 }
 919
 920 add_ldsoflags(){
 921     append LDSOFLAGS $($ldflags_filter "$@")
 922 }
 923
 924 add_extralibs(){
 925     prepend extralibs $($ldflags_filter "$@")
 926 }
 927
 928 add_stripflags(){
 929     append ASMSTRIPFLAGS "$@"
 930 }
 931
 932 add_host_cppflags(){
 933     append host_cppflags "$@"
 934 }
 935
 936 add_host_cflags(){
 937     append host_cflags $($host_cflags_filter "$@")
 938 }
 939
 940 add_host_ldflags(){
 941     append host_ldflags $($host_ldflags_filter "$@")
 942 }
 943
 944 add_compat(){
 945     append compat_objs $1
 946     shift
 947     map 'add_cppflags -D$v' "$@"
 948 }
 949
 950 test_cmd(){
 951     log "$@"
 952     "$@" >> $logfile 2>&1
 953 }
 954
 955 test_stat(){
 956     log test_stat "$@"
 957     stat "$1" >> $logfile 2>&1
 958 }
 959
 960 cc_e(){
 961     eval printf '%s\\n' $CC_E
 962 }
 963
 964 cc_o(){
 965     eval printf '%s\\n' $CC_O
 966 }
 967
 968 as_o(){
 969     eval printf '%s\\n' $AS_O
 970 }
 971
 972 x86asm_o(){
 973     eval printf '%s\\n' $X86ASM_O
 974 }
 975
 976 ld_o(){
 977     eval printf '%s\\n' $LD_O
 978 }
 979
 980 hostcc_e(){
 981     eval printf '%s\\n' $HOSTCC_E
 982 }
 983
 984 hostcc_o(){
 985     eval printf '%s\\n' $HOSTCC_O
 986 }
 987
 988 test_cc(){
 989     log test_cc "$@"
 990     cat > $TMPC
 991     log_file $TMPC
 992     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 993 }
 994
 995 test_cxx(){
 996     log test_cxx "$@"
 997     cat > $TMPCPP
 998     log_file $TMPCPP
 999     test_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
1000 }
1001
1002 test_objcc(){
1003     log test_objcc "$@"
1004     cat > $TMPM
1005     log_file $TMPM
1006     test_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
1007 }
1008
1009 test_cpp(){
1010     log test_cpp "$@"
1011     cat > $TMPC
1012     log_file $TMPC
1013     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
1014 }
1015
1016 test_as(){
1017     log test_as "$@"
1018     cat > $TMPS
1019     log_file $TMPS
1020     test_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
1021 }
1022
1023 test_x86asm(){
1024     log test_x86asm "$@"
1025     echo "$1" > $TMPASM
1026     log_file $TMPASM
1027     shift
1028     test_cmd $x86asmexe $X86ASMFLAGS -Werror "$@" $(x86asm_o $TMPO) $TMPASM
1029 }
1030
1031 check_cmd(){
1032     log check_cmd "$@"
1033     cmd=$1
1034     disabled $cmd && return
1035     disable $cmd
1036     test_cmd $@ && enable $cmd
1037 }
1038
1039 check_as(){
1040     log check_as "$@"
1041     name=$1
1042     code=$2
1043     shift 2
1044     disable $name
1045     test_as $@ <<EOF && enable $name
1046 $code
1047 EOF
1048 }
1049
1050 check_inline_asm(){
1051     log check_inline_asm "$@"
1052     name="$1"
1053     code="$2"
1054     shift 2
1055     disable $name
1056     test_cc "$@" <<EOF && enable $name
1057 void foo(void){ __asm__ volatile($code); }
1058 EOF
1059 }
1060
1061 check_inline_asm_flags(){
1062     log check_inline_asm_flags "$@"
1063     name="$1"
1064     code="$2"
1065     flags=''
1066     shift 2
1067     while [ "$1" != "" ]; do
1068       append flags $1
1069       shift
1070     done;
1071     disable $name
1072     cat > $TMPC <<EOF
1073 void foo(void){ __asm__ volatile($code); }
1074 EOF
1075     log_file $TMPC
1076     test_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
1077     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
1078 }
1079
1080 check_insn(){
1081     log check_insn "$@"
1082     check_inline_asm ${1}_inline "\"$2\""
1083     check_as ${1}_external "$2"
1084 }
1085
1086 check_x86asm(){
1087     log check_x86asm "$@"
1088     name=$1
1089     shift
1090     disable $name
1091     test_x86asm "$@" && enable $name
1092 }
1093
1094 test_ld(){
1095     log test_ld "$@"
1096     type=$1
1097     shift 1
1098     flags=$(filter_out '-l*|*.so' $@)
1099     libs=$(filter '-l*|*.so' $@)
1100     test_$type $($cflags_filter $flags) || return
1101     flags=$($ldflags_filter $flags)
1102     libs=$($ldflags_filter $libs)
1103     test_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1104 }
1105
1106 check_ld(){
1107     log check_ld "$@"
1108     type=$1
1109     name=$2
1110     shift 2
1111     disable $name
1112     test_ld $type $@ && enable $name
1113 }
1114
1115 print_include(){
1116     hdr=$1
1117     test "${hdr%.h}" = "${hdr}" &&
1118         echo "#include $hdr"    ||
1119         echo "#include <$hdr>"
1120 }
1121
1122 test_code(){
1123     log test_code "$@"
1124     check=$1
1125     headers=$2
1126     code=$3
1127     shift 3
1128     {
1129         for hdr in $headers; do
1130             print_include $hdr
1131         done
1132         echo "int main(void) { $code; return 0; }"
1133     } | test_$check "$@"
1134 }
1135
1136 check_cppflags(){
1137     log check_cppflags "$@"
1138     test_cpp "$@" <<EOF && append CPPFLAGS "$@"
1139 #include <stdlib.h>
1140 EOF
1141 }
1142
1143 test_cflags(){
1144     log test_cflags "$@"
1145     set -- $($cflags_filter "$@")
1146     test_cc "$@" <<EOF
1147 int x;
1148 EOF
1149 }
1150
1151 check_cflags(){
1152     log check_cflags "$@"
1153     test_cflags "$@" && add_cflags "$@"
1154 }
1155
1156 check_cxxflags(){
1157     log check_cxxflags "$@"
1158     set -- $($cflags_filter "$@")
1159     test_cxx "$@" <<EOF && append CXXFLAGS "$@"
1160 int x;
1161 EOF
1162 }
1163
1164 test_objcflags(){
1165     log test_objcflags "$@"
1166     set -- $($objcflags_filter "$@")
1167     test_objcc "$@" <<EOF
1168 int x;
1169 EOF
1170 }
1171
1172 check_objcflags(){
1173     log check_objcflags "$@"
1174     test_objcflags "$@" && add_objcflags "$@"
1175 }
1176
1177 test_ldflags(){
1178     log test_ldflags "$@"
1179     set -- $($ldflags_filter "$@")
1180     test_ld "cc" "$@" <<EOF
1181 int main(void){ return 0; }
1182 EOF
1183 }
1184
1185 check_ldflags(){
1186     log check_ldflags "$@"
1187     test_ldflags "$@" && add_ldflags "$@"
1188 }
1189
1190 test_stripflags(){
1191     log test_stripflags "$@"
1192     # call test_cc to get a fresh TMPO
1193     test_cc <<EOF
1194 int main(void) { return 0; }
1195 EOF
1196     test_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1197 }
1198
1199 check_stripflags(){
1200     log check_stripflags "$@"
1201     test_stripflags "$@" && add_stripflags "$@"
1202 }
1203
1204 check_headers(){
1205     log check_headers "$@"
1206     headers=$1
1207     shift
1208     disable_sanitized $headers
1209     {
1210         for hdr in $headers; do
1211             print_include $hdr
1212         done
1213         echo "int x;"
1214     } | test_cpp "$@" && enable_sanitized $headers
1215 }
1216
1217 check_header_objcc(){
1218     log check_header_objcc "$@"
1219     rm -f -- "$TMPO"
1220     header=$1
1221     shift
1222     disable_sanitized $header
1223     {
1224        echo "#include <$header>"
1225        echo "int main(void) { return 0; }"
1226     } | test_objcc && test_stat "$TMPO" && enable_sanitized $header
1227 }
1228
1229 check_apple_framework(){
1230     log check_apple_framework "$@"
1231     framework="$1"
1232     name="$(tolower $framework)"
1233     header="${framework}/${framework}.h"
1234     disable $name
1235     check_header_objcc $header &&
1236         enable $name && eval ${name}_extralibs='"-framework $framework"'
1237 }
1238
1239 check_func(){
1240     log check_func "$@"
1241     func=$1
1242     shift
1243     disable $func
1244     test_ld "cc" "$@" <<EOF && enable $func
1245 extern int $func();
1246 int main(void){ $func(); }
1247 EOF
1248 }
1249
1250 check_complexfunc(){
1251     log check_complexfunc "$@"
1252     func=$1
1253     narg=$2
1254     shift 2
1255     test $narg = 2 && args="f, g" || args="f * I"
1256     disable $func
1257     test_ld "cc" "$@" <<EOF && enable $func
1258 #include <complex.h>
1259 #include <math.h>
1260 float foo(complex float f, complex float g) { return $func($args); }
1261 int main(void){ return (int) foo; }
1262 EOF
1263 }
1264
1265 check_mathfunc(){
1266     log check_mathfunc "$@"
1267     func=$1
1268     narg=$2
1269     shift 2
1270     test $narg = 2 && args="f, g" || args="f"
1271     disable $func
1272     test_ld "cc" "$@" <<EOF && enable $func
1273 #include <math.h>
1274 float foo(float f, float g) { return $func($args); }
1275 int main(void){ return (int) foo; }
1276 EOF
1277 }
1278
1279 check_func_headers(){
1280     log check_func_headers "$@"
1281     headers=$1
1282     funcs=$2
1283     shift 2
1284     {
1285         for hdr in $headers; do
1286             print_include $hdr
1287         done
1288         echo "#include <stdint.h>"
1289         for func in $funcs; do
1290             echo "long check_$func(void) { return (long) $func; }"
1291         done
1292         echo "int main(void) { int ret = 0;"
1293         # LTO could optimize out the test functions without this
1294         for func in $funcs; do
1295             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1296         done
1297         echo "return ret; }"
1298     } | test_ld "cc" "$@" && enable $funcs && enable_sanitized $headers
1299 }
1300
1301 check_class_headers_cpp(){
1302     log check_class_headers_cpp "$@"
1303     headers=$1
1304     classes=$2
1305     shift 2
1306     {
1307         for hdr in $headers; do
1308             echo "#include <$hdr>"
1309         done
1310         echo "int main(void) { "
1311         i=1
1312         for class in $classes; do
1313             echo "$class obj$i;"
1314             i=$(expr $i + 1)
1315         done
1316         echo "return 0; }"
1317     } | test_ld "cxx" "$@" && enable $funcs && enable_sanitized $headers
1318 }
1319
1320 test_cpp_condition(){
1321     log test_cpp_condition "$@"
1322     header=$1
1323     condition=$2
1324     shift 2
1325     test_cpp "$@" <<EOF
1326 #include <$header>
1327 #if !($condition)
1328 #error "unsatisfied condition: $condition"
1329 #endif
1330 EOF
1331 }
1332
1333 check_cpp_condition(){
1334     log check_cpp_condition "$@"
1335     name=$1
1336     shift 1
1337     disable $name
1338     test_cpp_condition "$@" && enable $name
1339 }
1340
1341 test_cflags_cc(){
1342     log test_cflags_cc "$@"
1343     flags=$1
1344     header=$2
1345     condition=$3
1346     shift 3
1347     set -- $($cflags_filter "$flags")
1348     test_cc "$@" <<EOF
1349 #include <$header>
1350 #if !($condition)
1351 #error "unsatisfied condition: $condition"
1352 #endif
1353 EOF
1354 }
1355
1356 check_lib(){
1357     log check_lib "$@"
1358     name="$1"
1359     headers="$2"
1360     funcs="$3"
1361     shift 3
1362     disable $name
1363     check_func_headers "$headers" "$funcs" "$@" &&
1364         enable $name && eval ${name}_extralibs="\$@"
1365 }
1366
1367 check_lib_cpp(){
1368     log check_lib_cpp "$@"
1369     name="$1"
1370     headers="$2"
1371     classes="$3"
1372     shift 3
1373     disable $name
1374     check_class_headers_cpp "$headers" "$classes" "$@" &&
1375         enable $name && eval ${name}_extralibs="\$@"
1376 }
1377
1378 test_pkg_config(){
1379     log test_pkg_config "$@"
1380     name="$1"
1381     pkg_version="$2"
1382     pkg="${2%% *}"
1383     headers="$3"
1384     funcs="$4"
1385     shift 4
1386     disable $name
1387     test_cmd $pkg_config --exists --print-errors $pkg_version || return
1388     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1389     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1390     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1391         enable $name &&
1392         set_sanitized "${name}_cflags"    $pkg_cflags &&
1393         set_sanitized "${name}_extralibs" $pkg_libs
1394 }
1395
1396 check_pkg_config(){
1397     log check_pkg_config "$@"
1398     name="$1"
1399     test_pkg_config "$@" &&
1400         eval add_cflags \$${name}_cflags
1401 }
1402
1403 test_exec(){
1404     test_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1405 }
1406
1407 check_exec_crash(){
1408     log check_exec_crash "$@"
1409     code=$(cat)
1410
1411     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1412     # are safe but may not be available everywhere.  Thus we use
1413     # raise(SIGTERM) instead.  The check is run in a subshell so we
1414     # can redirect the "Terminated" message from the shell.  SIGBUS
1415     # is not defined by standard C so it is used conditionally.
1416
1417     (test_exec "$@") >> $logfile 2>&1 <<EOF
1418 #include <signal.h>
1419 static void sighandler(int sig){
1420     raise(SIGTERM);
1421 }
1422 int foo(void){
1423     $code
1424 }
1425 int (*func_ptr)(void) = foo;
1426 int main(void){
1427     signal(SIGILL, sighandler);
1428     signal(SIGFPE, sighandler);
1429     signal(SIGSEGV, sighandler);
1430 #ifdef SIGBUS
1431     signal(SIGBUS, sighandler);
1432 #endif
1433     return func_ptr();
1434 }
1435 EOF
1436 }
1437
1438 check_type(){
1439     log check_type "$@"
1440     headers=$1
1441     type=$2
1442     shift 2
1443     disable_sanitized "$type"
1444     test_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1445 }
1446
1447 check_struct(){
1448     log check_struct "$@"
1449     headers=$1
1450     struct=$2
1451     member=$3
1452     shift 3
1453     disable_sanitized "${struct}_${member}"
1454     test_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1455         enable_sanitized "${struct}_${member}"
1456 }
1457
1458 check_builtin(){
1459     log check_builtin "$@"
1460     name=$1
1461     headers=$2
1462     builtin=$3
1463     shift 3
1464     disable "$name"
1465     test_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1466 }
1467
1468 check_compile_assert(){
1469     log check_compile_assert "$@"
1470     name=$1
1471     headers=$2
1472     condition=$3
1473     shift 3
1474     disable "$name"
1475     test_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1476 }
1477
1478 check_cc(){
1479     log check_cc "$@"
1480     name=$1
1481     shift
1482     disable "$name"
1483     test_code cc "$@" && enable "$name"
1484 }
1485
1486 require(){
1487     log require "$@"
1488     name_version="$1"
1489     name="${1%% *}"
1490     shift
1491     check_lib $name "$@" || die "ERROR: $name_version not found"
1492 }
1493
1494 require_cc(){
1495     log require_cc "$@"
1496     name="$1"
1497     check_cc "$@" || die "ERROR: $name failed"
1498 }
1499
1500 require_cpp(){
1501     name="$1"
1502     headers="$2"
1503     classes="$3"
1504     shift 3
1505     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1506 }
1507
1508 require_headers(){
1509     log require_headers "$@"
1510     headers="$1"
1511     check_headers "$@" || die "ERROR: $headers not found"
1512 }
1513
1514 require_cpp_condition(){
1515     log require_cpp_condition "$@"
1516     condition="$3"
1517     check_cpp_condition "$@" || die "ERROR: $condition not satisfied"
1518 }
1519
1520 require_pkg_config(){
1521     log require_pkg_config "$@"
1522     pkg_version="$2"
1523     check_pkg_config "$@" || die "ERROR: $pkg_version not found using pkg-config$pkg_config_fail_message"
1524 }
1525
1526 test_host_cc(){
1527     log test_host_cc "$@"
1528     cat > $TMPC
1529     log_file $TMPC
1530     test_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1531 }
1532
1533 test_host_cpp(){
1534     log test_host_cpp "$@"
1535     cat > $TMPC
1536     log_file $TMPC
1537     test_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1538 }
1539
1540 check_host_cppflags(){
1541     log check_host_cppflags "$@"
1542     test_host_cpp "$@" <<EOF && append host_cppflags "$@"
1543 #include <stdlib.h>
1544 EOF
1545 }
1546
1547 check_host_cflags(){
1548     log check_host_cflags "$@"
1549     set -- $($host_cflags_filter "$@")
1550     test_host_cc "$@" <<EOF && append host_cflags "$@"
1551 int x;
1552 EOF
1553 }
1554
1555 test_host_cpp_condition(){
1556     log test_host_cpp_condition "$@"
1557     header=$1
1558     condition=$2
1559     shift 2
1560     test_host_cpp "$@" <<EOF
1561 #include <$header>
1562 #if !($condition)
1563 #error "unsatisfied condition: $condition"
1564 #endif
1565 EOF
1566 }
1567
1568 check_host_cpp_condition(){
1569     log check_host_cpp_condition "$@"
1570     name=$1
1571     shift 1
1572     disable $name
1573     test_host_cpp_condition "$@" && enable $name
1574 }
1575
1576 cp_if_changed(){
1577     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1578     mkdir -p "$(dirname $2)"
1579     cp -f "$1" "$2"
1580 }
1581
1582 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1583 # system-dependent things.
1584
1585 AVCODEC_COMPONENTS="
1586     bsfs
1587     decoders
1588     encoders
1589     hwaccels
1590     parsers
1591 "
1592
1593 AVDEVICE_COMPONENTS="
1594     indevs
1595     outdevs
1596 "
1597
1598 AVFILTER_COMPONENTS="
1599     filters
1600 "
1601
1602 AVFORMAT_COMPONENTS="
1603     demuxers
1604     muxers
1605     protocols
1606 "
1607
1608 COMPONENT_LIST="
1609     $AVCODEC_COMPONENTS
1610     $AVDEVICE_COMPONENTS
1611     $AVFILTER_COMPONENTS
1612     $AVFORMAT_COMPONENTS
1613 "
1614
1615 EXAMPLE_LIST="
1616     avio_dir_cmd_example
1617     avio_reading_example
1618     decode_audio_example
1619     decode_video_example
1620     demuxing_decoding_example
1621     encode_audio_example
1622     encode_video_example
1623     extract_mvs_example
1624     filter_audio_example
1625     filtering_audio_example
1626     filtering_video_example
1627     http_multiclient_example
1628     hw_decode_example
1629     metadata_example
1630     muxing_example
1631     qsvdec_example
1632     remuxing_example
1633     resampling_audio_example
1634     scaling_video_example
1635     transcode_aac_example
1636     transcoding_example
1637     vaapi_encode_example
1638     vaapi_transcode_example
1639 "
1640
1641 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1642     alsa
1643     appkit
1644     avfoundation
1645     bzlib
1646     coreimage
1647     iconv
1648     libxcb
1649     libxcb_shm
1650     libxcb_shape
1651     libxcb_xfixes
1652     lzma
1653     schannel
1654     sdl2
1655     securetransport
1656     sndio
1657     xlib
1658     zlib
1659 "
1660
1661 EXTERNAL_LIBRARY_GPL_LIST="
1662     avisynth
1663     frei0r
1664     libcdio
1665     libdavs2
1666     librubberband
1667     libvidstab
1668     libx264
1669     libx265
1670     libxavs
1671     libxavs2
1672     libxvid
1673 "
1674
1675 EXTERNAL_LIBRARY_NONFREE_LIST="
1676     decklink
1677     libndi_newtek
1678     libfdk_aac
1679     openssl
1680     libtls
1681 "
1682
1683 EXTERNAL_LIBRARY_VERSION3_LIST="
1684     gmp
1685     liblensfun
1686     libopencore_amrnb
1687     libopencore_amrwb
1688     libvmaf
1689     libvo_amrwbenc
1690     mbedtls
1691     rkmpp
1692 "
1693
1694 EXTERNAL_LIBRARY_GPLV3_LIST="
1695     libsmbclient
1696 "
1697
1698 EXTERNAL_LIBRARY_LIST="
1699     $EXTERNAL_LIBRARY_GPL_LIST
1700     $EXTERNAL_LIBRARY_NONFREE_LIST
1701     $EXTERNAL_LIBRARY_VERSION3_LIST
1702     $EXTERNAL_LIBRARY_GPLV3_LIST
1703     chromaprint
1704     gcrypt
1705     gnutls
1706     jni
1707     ladspa
1708     libaom
1709     libass
1710     libbluray
1711     libbs2b
1712     libcaca
1713     libcelt
1714     libcodec2
1715     libdc1394
1716     libdrm
1717     libflite
1718     libfontconfig
1719     libfreetype
1720     libfribidi
1721     libgme
1722     libgsm
1723     libiec61883
1724     libilbc
1725     libjack
1726     libklvanc
1727     libkvazaar
1728     libmodplug
1729     libmp3lame
1730     libmysofa
1731     libopencv
1732     libopenh264
1733     libopenjpeg
1734     libopenmpt
1735     libopus
1736     libpulse
1737     librsvg
1738     librtmp
1739     libshine
1740     libsmbclient
1741     libsnappy
1742     libsoxr
1743     libspeex
1744     libsrt
1745     libssh
1746     libtensorflow
1747     libtesseract
1748     libtheora
1749     libtwolame
1750     libv4l2
1751     libvorbis
1752     libvpx
1753     libwavpack
1754     libwebp
1755     libxml2
1756     libzimg
1757     libzmq
1758     libzvbi
1759     lv2
1760     mediacodec
1761     openal
1762     opengl
1763     vapoursynth
1764 "
1765
1766 HWACCEL_AUTODETECT_LIBRARY_LIST="
1767     amf
1768     audiotoolbox
1769     crystalhd
1770     cuda
1771     cuvid
1772     d3d11va
1773     dxva2
1774     ffnvcodec
1775     nvdec
1776     nvenc
1777     vaapi
1778     vdpau
1779     videotoolbox
1780     v4l2_m2m
1781     xvmc
1782 "
1783
1784 # catchall list of things that require external libs to link
1785 EXTRALIBS_LIST="
1786     cpu_init
1787     cws2fws
1788 "
1789
1790 HWACCEL_LIBRARY_NONFREE_LIST="
1791     cuda_sdk
1792     libnpp
1793 "
1794
1795 HWACCEL_LIBRARY_LIST="
1796     $HWACCEL_LIBRARY_NONFREE_LIST
1797     libmfx
1798     mmal
1799     omx
1800     opencl
1801 "
1802
1803 DOCUMENT_LIST="
1804     doc
1805     htmlpages
1806     manpages
1807     podpages
1808     txtpages
1809 "
1810
1811 FEATURE_LIST="
1812     ftrapv
1813     gray
1814     hardcoded_tables
1815     omx_rpi
1816     runtime_cpudetect
1817     safe_bitstream_reader
1818     shared
1819     small
1820     static
1821     swscale_alpha
1822 "
1823
1824 # this list should be kept in linking order
1825 LIBRARY_LIST="
1826     avdevice
1827     avfilter
1828     swscale
1829     postproc
1830     avformat
1831     avcodec
1832     swresample
1833     avresample
1834     avutil
1835 "
1836
1837 LICENSE_LIST="
1838     gpl
1839     nonfree
1840     version3
1841 "
1842
1843 PROGRAM_LIST="
1844     ffplay
1845     ffprobe
1846     ffmpeg
1847 "
1848
1849 SUBSYSTEM_LIST="
1850     dct
1851     dwt
1852     error_resilience
1853     faan
1854     fast_unaligned
1855     fft
1856     lsp
1857     lzo
1858     mdct
1859     pixelutils
1860     network
1861     rdft
1862 "
1863
1864 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1865 CONFIG_LIST="
1866     $DOCUMENT_LIST
1867     $EXAMPLE_LIST
1868     $EXTERNAL_LIBRARY_LIST
1869     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1870     $HWACCEL_LIBRARY_LIST
1871     $HWACCEL_AUTODETECT_LIBRARY_LIST
1872     $FEATURE_LIST
1873     $LICENSE_LIST
1874     $LIBRARY_LIST
1875     $PROGRAM_LIST
1876     $SUBSYSTEM_LIST
1877     autodetect
1878     fontconfig
1879     linux_perf
1880     memory_poisoning
1881     neon_clobber_test
1882     ossfuzz
1883     pic
1884     thumb
1885     valgrind_backtrace
1886     xmm_clobber_test
1887     $COMPONENT_LIST
1888 "
1889
1890 THREADS_LIST="
1891     pthreads
1892     os2threads
1893     w32threads
1894 "
1895
1896 ATOMICS_LIST="
1897     atomics_gcc
1898     atomics_suncc
1899     atomics_win32
1900 "
1901
1902 AUTODETECT_LIBS="
1903     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1904     $HWACCEL_AUTODETECT_LIBRARY_LIST
1905     $THREADS_LIST
1906 "
1907
1908 ARCH_LIST="
1909     aarch64
1910     alpha
1911     arm
1912     avr32
1913     avr32_ap
1914     avr32_uc
1915     bfin
1916     ia64
1917     m68k
1918     mips
1919     mips64
1920     parisc
1921     ppc
1922     ppc64
1923     s390
1924     sh4
1925     sparc
1926     sparc64
1927     tilegx
1928     tilepro
1929     tomi
1930     x86
1931     x86_32
1932     x86_64
1933 "
1934
1935 ARCH_EXT_LIST_ARM="
1936     armv5te
1937     armv6
1938     armv6t2
1939     armv8
1940     neon
1941     vfp
1942     vfpv3
1943     setend
1944 "
1945
1946 ARCH_EXT_LIST_MIPS="
1947     mipsfpu
1948     mips32r2
1949     mips32r5
1950     mips64r2
1951     mips32r6
1952     mips64r6
1953     mipsdsp
1954     mipsdspr2
1955     msa
1956 "
1957
1958 ARCH_EXT_LIST_LOONGSON="
1959     loongson2
1960     loongson3
1961     mmi
1962 "
1963
1964 ARCH_EXT_LIST_X86_SIMD="
1965     aesni
1966     amd3dnow
1967     amd3dnowext
1968     avx
1969     avx2
1970     avx512
1971     fma3
1972     fma4
1973     mmx
1974     mmxext
1975     sse
1976     sse2
1977     sse3
1978     sse4
1979     sse42
1980     ssse3
1981     xop
1982 "
1983
1984 ARCH_EXT_LIST_PPC="
1985     altivec
1986     dcbzl
1987     ldbrx
1988     power8
1989     ppc4xx
1990     vsx
1991 "
1992
1993 ARCH_EXT_LIST_X86="
1994     $ARCH_EXT_LIST_X86_SIMD
1995     cpunop
1996     i686
1997 "
1998
1999 ARCH_EXT_LIST="
2000     $ARCH_EXT_LIST_ARM
2001     $ARCH_EXT_LIST_PPC
2002     $ARCH_EXT_LIST_X86
2003     $ARCH_EXT_LIST_MIPS
2004     $ARCH_EXT_LIST_LOONGSON
2005 "
2006
2007 ARCH_FEATURES="
2008     aligned_stack
2009     fast_64bit
2010     fast_clz
2011     fast_cmov
2012     local_aligned
2013     simd_align_16
2014     simd_align_32
2015     simd_align_64
2016 "
2017
2018 BUILTIN_LIST="
2019     atomic_cas_ptr
2020     machine_rw_barrier
2021     MemoryBarrier
2022     mm_empty
2023     rdtsc
2024     sem_timedwait
2025     sync_val_compare_and_swap
2026 "
2027 HAVE_LIST_CMDLINE="
2028     inline_asm
2029     symver
2030     x86asm
2031 "
2032
2033 HAVE_LIST_PUB="
2034     bigendian
2035     fast_unaligned
2036 "
2037
2038 HEADERS_LIST="
2039     arpa_inet_h
2040     asm_types_h
2041     cdio_paranoia_h
2042     cdio_paranoia_paranoia_h
2043     cuda_h
2044     dispatch_dispatch_h
2045     dev_bktr_ioctl_bt848_h
2046     dev_bktr_ioctl_meteor_h
2047     dev_ic_bt8xx_h
2048     dev_video_bktr_ioctl_bt848_h
2049     dev_video_meteor_ioctl_meteor_h
2050     direct_h
2051     dirent_h
2052     dxgidebug_h
2053     dxva_h
2054     ES2_gl_h
2055     gsm_h
2056     io_h
2057     linux_perf_event_h
2058     machine_ioctl_bt848_h
2059     machine_ioctl_meteor_h
2060     malloc_h
2061     opencv2_core_core_c_h
2062     OpenGL_gl3_h
2063     poll_h
2064     sys_param_h
2065     sys_resource_h
2066     sys_select_h
2067     sys_soundcard_h
2068     sys_time_h
2069     sys_un_h
2070     sys_videoio_h
2071     termios_h
2072     udplite_h
2073     unistd_h
2074     valgrind_valgrind_h
2075     windows_h
2076     winsock2_h
2077 "
2078
2079 INTRINSICS_LIST="
2080     intrinsics_neon
2081 "
2082
2083 COMPLEX_FUNCS="
2084     cabs
2085     cexp
2086 "
2087
2088 MATH_FUNCS="
2089     atanf
2090     atan2f
2091     cbrt
2092     cbrtf
2093     copysign
2094     cosf
2095     erf
2096     exp2
2097     exp2f
2098     expf
2099     hypot
2100     isfinite
2101     isinf
2102     isnan
2103     ldexpf
2104     llrint
2105     llrintf
2106     log2
2107     log2f
2108     log10f
2109     lrint
2110     lrintf
2111     powf
2112     rint
2113     round
2114     roundf
2115     sinf
2116     trunc
2117     truncf
2118 "
2119
2120 SYSTEM_FEATURES="
2121     dos_paths
2122     libc_msvcrt
2123     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2124     section_data_rel_ro
2125     threads
2126     uwp
2127     winrt
2128 "
2129
2130 SYSTEM_FUNCS="
2131     access
2132     aligned_malloc
2133     arc4random
2134     clock_gettime
2135     closesocket
2136     CommandLineToArgvW
2137     fcntl
2138     getaddrinfo
2139     gethrtime
2140     getopt
2141     GetProcessAffinityMask
2142     GetProcessMemoryInfo
2143     GetProcessTimes
2144     getrusage
2145     GetSystemTimeAsFileTime
2146     gettimeofday
2147     glob
2148     glXGetProcAddress
2149     gmtime_r
2150     inet_aton
2151     isatty
2152     kbhit
2153     localtime_r
2154     lstat
2155     lzo1x_999_compress
2156     mach_absolute_time
2157     MapViewOfFile
2158     memalign
2159     mkstemp
2160     mmap
2161     mprotect
2162     nanosleep
2163     PeekNamedPipe
2164     posix_memalign
2165     pthread_cancel
2166     sched_getaffinity
2167     SecItemImport
2168     SetConsoleTextAttribute
2169     SetConsoleCtrlHandler
2170     setmode
2171     setrlimit
2172     Sleep
2173     strerror_r
2174     sysconf
2175     sysctl
2176     usleep
2177     UTGetOSTypeFromString
2178     VirtualAlloc
2179     wglGetProcAddress
2180 "
2181
2182 SYSTEM_LIBRARIES="
2183     bcrypt
2184     vaapi_drm
2185     vaapi_x11
2186     vdpau_x11
2187 "
2188
2189 TOOLCHAIN_FEATURES="
2190     as_arch_directive
2191     as_dn_directive
2192     as_fpu_directive
2193     as_func
2194     as_object_arch
2195     asm_mod_q
2196     blocks_extension
2197     ebp_available
2198     ebx_available
2199     gnu_as
2200     gnu_windres
2201     ibm_asm
2202     inline_asm_direct_symbol_refs
2203     inline_asm_labels
2204     inline_asm_nonlocal_labels
2205     pragma_deprecated
2206     rsync_contimeout
2207     symver_asm_label
2208     symver_gnu_asm
2209     vfp_args
2210     xform_asm
2211     xmm_clobbers
2212 "
2213
2214 TYPES_LIST="
2215     kCMVideoCodecType_HEVC
2216     socklen_t
2217     struct_addrinfo
2218     struct_group_source_req
2219     struct_ip_mreq_source
2220     struct_ipv6_mreq
2221     struct_msghdr_msg_flags
2222     struct_pollfd
2223     struct_rusage_ru_maxrss
2224     struct_sctp_event_subscribe
2225     struct_sockaddr_in6
2226     struct_sockaddr_sa_len
2227     struct_sockaddr_storage
2228     struct_stat_st_mtim_tv_nsec
2229     struct_v4l2_frmivalenum_discrete
2230 "
2231
2232 HAVE_LIST="
2233     $ARCH_EXT_LIST
2234     $(add_suffix _external $ARCH_EXT_LIST)
2235     $(add_suffix _inline   $ARCH_EXT_LIST)
2236     $ARCH_FEATURES
2237     $BUILTIN_LIST
2238     $COMPLEX_FUNCS
2239     $HAVE_LIST_CMDLINE
2240     $HAVE_LIST_PUB
2241     $HEADERS_LIST
2242     $INTRINSICS_LIST
2243     $MATH_FUNCS
2244     $SYSTEM_FEATURES
2245     $SYSTEM_FUNCS
2246     $SYSTEM_LIBRARIES
2247     $THREADS_LIST
2248     $TOOLCHAIN_FEATURES
2249     $TYPES_LIST
2250     makeinfo
2251     makeinfo_html
2252     opencl_d3d11
2253     opencl_drm_arm
2254     opencl_drm_beignet
2255     opencl_dxva2
2256     opencl_vaapi_beignet
2257     opencl_vaapi_intel_media
2258     perl
2259     pod2man
2260     texi2html
2261 "
2262
2263 # options emitted with CONFIG_ prefix but not available on the command line
2264 CONFIG_EXTRA="
2265     aandcttables
2266     ac3dsp
2267     adts_header
2268     audio_frame_queue
2269     audiodsp
2270     blockdsp
2271     bswapdsp
2272     cabac
2273     cbs
2274     cbs_av1
2275     cbs_h264
2276     cbs_h265
2277     cbs_jpeg
2278     cbs_mpeg2
2279     cbs_vp9
2280     dirac_parse
2281     dnn
2282     dvprofile
2283     exif
2284     faandct
2285     faanidct
2286     fdctdsp
2287     flacdsp
2288     fmtconvert
2289     frame_thread_encoder
2290     g722dsp
2291     golomb
2292     gplv3
2293     h263dsp
2294     h264chroma
2295     h264dsp
2296     h264parse
2297     h264pred
2298     h264qpel
2299     hevcparse
2300     hpeldsp
2301     huffman
2302     huffyuvdsp
2303     huffyuvencdsp
2304     idctdsp
2305     iirfilter
2306     mdct15
2307     intrax8
2308     iso_media
2309     ividsp
2310     jpegtables
2311     lgplv3
2312     libx262
2313     llauddsp
2314     llviddsp
2315     llvidencdsp
2316     lpc
2317     lzf
2318     me_cmp
2319     mpeg_er
2320     mpegaudio
2321     mpegaudiodsp
2322     mpegaudioheader
2323     mpegvideo
2324     mpegvideoenc
2325     mss34dsp
2326     pixblockdsp
2327     qpeldsp
2328     qsv
2329     qsvdec
2330     qsvenc
2331     qsvvpp
2332     rangecoder
2333     riffdec
2334     riffenc
2335     rtpdec
2336     rtpenc_chain
2337     rv34dsp
2338     sinewin
2339     snappy
2340     srtp
2341     startcode
2342     texturedsp
2343     texturedspenc
2344     tpeldsp
2345     vaapi_1
2346     vaapi_encode
2347     vc1dsp
2348     videodsp
2349     vp3dsp
2350     vp56dsp
2351     vp8dsp
2352     wma_freqs
2353     wmv2dsp
2354 "
2355
2356 CMDLINE_SELECT="
2357     $ARCH_EXT_LIST
2358     $CONFIG_LIST
2359     $HAVE_LIST_CMDLINE
2360     $THREADS_LIST
2361     asm
2362     cross_compile
2363     debug
2364     extra_warnings
2365     logging
2366     lto
2367     optimizations
2368     rpath
2369     stripping
2370 "
2371
2372 PATHS_LIST="
2373     bindir
2374     datadir
2375     docdir
2376     incdir
2377     libdir
2378     mandir
2379     pkgconfigdir
2380     prefix
2381     shlibdir
2382     install_name_dir
2383 "
2384
2385 CMDLINE_SET="
2386     $PATHS_LIST
2387     ar
2388     arch
2389     as
2390     assert_level
2391     build_suffix
2392     cc
2393     objcc
2394     cpu
2395     cross_prefix
2396     custom_allocator
2397     cxx
2398     dep_cc
2399     doxygen
2400     env
2401     extra_version
2402     gas
2403     host_cc
2404     host_cflags
2405     host_extralibs
2406     host_ld
2407     host_ldflags
2408     host_os
2409     ignore_tests
2410     install
2411     ld
2412     ln_s
2413     logfile
2414     malloc_prefix
2415     nm
2416     optflags
2417     nvcc
2418     nvccflags
2419     pkg_config
2420     pkg_config_flags
2421     progs_suffix
2422     random_seed
2423     ranlib
2424     samples
2425     strip
2426     sws_max_filter_size
2427     sysinclude
2428     sysroot
2429     target_exec
2430     target_os
2431     target_path
2432     target_samples
2433     tempprefix
2434     toolchain
2435     valgrind
2436     x86asmexe
2437 "
2438
2439 CMDLINE_APPEND="
2440     extra_cflags
2441     extra_cxxflags
2442     extra_objcflags
2443     host_cppflags
2444 "
2445
2446 # code dependency declarations
2447
2448 # architecture extensions
2449
2450 armv5te_deps="arm"
2451 armv6_deps="arm"
2452 armv6t2_deps="arm"
2453 armv8_deps="aarch64"
2454 neon_deps_any="aarch64 arm"
2455 intrinsics_neon_deps="neon"
2456 vfp_deps_any="aarch64 arm"
2457 vfpv3_deps="vfp"
2458 setend_deps="arm"
2459
2460 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2461
2462 altivec_deps="ppc"
2463 dcbzl_deps="ppc"
2464 ldbrx_deps="ppc"
2465 ppc4xx_deps="ppc"
2466 vsx_deps="altivec"
2467 power8_deps="vsx"
2468
2469 loongson2_deps="mips"
2470 loongson3_deps="mips"
2471 mips32r2_deps="mips"
2472 mips32r5_deps="mips"
2473 mips32r6_deps="mips"
2474 mips64r2_deps="mips"
2475 mips64r6_deps="mips"
2476 mipsfpu_deps="mips"
2477 mipsdsp_deps="mips"
2478 mipsdspr2_deps="mips"
2479 mmi_deps="mips"
2480 msa_deps="mipsfpu"
2481
2482 cpunop_deps="i686"
2483 x86_64_select="i686"
2484 x86_64_suggest="fast_cmov"
2485
2486 amd3dnow_deps="mmx"
2487 amd3dnowext_deps="amd3dnow"
2488 i686_deps="x86"
2489 mmx_deps="x86"
2490 mmxext_deps="mmx"
2491 sse_deps="mmxext"
2492 sse2_deps="sse"
2493 sse3_deps="sse2"
2494 ssse3_deps="sse3"
2495 sse4_deps="ssse3"
2496 sse42_deps="sse4"
2497 aesni_deps="sse42"
2498 avx_deps="sse42"
2499 xop_deps="avx"
2500 fma3_deps="avx"
2501 fma4_deps="avx"
2502 avx2_deps="avx"
2503 avx512_deps="avx2"
2504
2505 mmx_external_deps="x86asm"
2506 mmx_inline_deps="inline_asm x86"
2507 mmx_suggest="mmx_external mmx_inline"
2508
2509 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2510     eval dep=\$${ext}_deps
2511     eval ${ext}_external_deps='"${dep}_external"'
2512     eval ${ext}_inline_deps='"${dep}_inline"'
2513     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2514 done
2515
2516 aligned_stack_if_any="aarch64 ppc x86"
2517 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2518 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2519 fast_unaligned_if_any="aarch64 ppc x86"
2520 simd_align_16_if_any="altivec neon sse"
2521 simd_align_32_if_any="avx"
2522 simd_align_64_if_any="avx512"
2523
2524 # system capabilities
2525 linux_perf_deps="linux_perf_event_h"
2526 symver_if_any="symver_asm_label symver_gnu_asm"
2527 valgrind_backtrace_conflict="optimizations"
2528 valgrind_backtrace_deps="valgrind_valgrind_h"
2529
2530 # threading support
2531 atomics_gcc_if="sync_val_compare_and_swap"
2532 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2533 atomics_win32_if="MemoryBarrier"
2534 atomics_native_if_any="$ATOMICS_LIST"
2535 w32threads_deps="atomics_native"
2536 threads_if_any="$THREADS_LIST"
2537
2538 # subsystems
2539 cbs_av1_select="cbs"
2540 cbs_h264_select="cbs golomb"
2541 cbs_h265_select="cbs golomb"
2542 cbs_jpeg_select="cbs"
2543 cbs_mpeg2_select="cbs"
2544 cbs_vp9_select="cbs"
2545 dct_select="rdft"
2546 dirac_parse_select="golomb"
2547 dnn_suggest="libtensorflow"
2548 error_resilience_select="me_cmp"
2549 faandct_deps="faan"
2550 faandct_select="fdctdsp"
2551 faanidct_deps="faan"
2552 faanidct_select="idctdsp"
2553 h264dsp_select="startcode"
2554 hevcparse_select="golomb"
2555 frame_thread_encoder_deps="encoders threads"
2556 intrax8_select="blockdsp idctdsp"
2557 mdct_select="fft"
2558 mdct15_select="fft"
2559 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2560 mpeg_er_select="error_resilience"
2561 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2562 mpegaudiodsp_select="dct"
2563 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2564 mpegvideoenc_select="aandcttables me_cmp mpegvideo pixblockdsp qpeldsp"
2565 vc1dsp_select="h264chroma qpeldsp startcode"
2566 rdft_select="fft"
2567
2568 # decoders / encoders
2569 aac_decoder_select="adts_header mdct15 mdct sinewin"
2570 aac_fixed_decoder_select="adts_header mdct sinewin"
2571 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2572 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2573 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2574 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2575 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2576 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2577 adpcm_g722_decoder_select="g722dsp"
2578 adpcm_g722_encoder_select="g722dsp"
2579 aic_decoder_select="golomb idctdsp"
2580 alac_encoder_select="lpc"
2581 als_decoder_select="bswapdsp"
2582 amrnb_decoder_select="lsp"
2583 amrwb_decoder_select="lsp"
2584 amv_decoder_select="sp5x_decoder exif"
2585 amv_encoder_select="jpegtables mpegvideoenc"
2586 ape_decoder_select="bswapdsp llauddsp"
2587 apng_decoder_deps="zlib"
2588 apng_encoder_deps="zlib"
2589 apng_encoder_select="llvidencdsp"
2590 aptx_decoder_select="audio_frame_queue"
2591 aptx_encoder_select="audio_frame_queue"
2592 aptx_hd_decoder_select="audio_frame_queue"
2593 aptx_hd_encoder_select="audio_frame_queue"
2594 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2595 asv1_encoder_select="aandcttables bswapdsp fdctdsp pixblockdsp"
2596 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2597 asv2_encoder_select="aandcttables bswapdsp fdctdsp pixblockdsp"
2598 atrac1_decoder_select="mdct sinewin"
2599 atrac3_decoder_select="mdct"
2600 atrac3p_decoder_select="mdct sinewin"
2601 atrac9_decoder_select="mdct"
2602 avrn_decoder_select="exif jpegtables"
2603 bink_decoder_select="blockdsp hpeldsp"
2604 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2605 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2606 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2607 clearvideo_decoder_select="idctdsp"
2608 cllc_decoder_select="bswapdsp"
2609 comfortnoise_encoder_select="lpc"
2610 cook_decoder_select="audiodsp mdct sinewin"
2611 cscd_decoder_select="lzo"
2612 cscd_decoder_suggest="zlib"
2613 dca_decoder_select="mdct"
2614 dds_decoder_select="texturedsp"
2615 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2616 dnxhd_decoder_select="blockdsp idctdsp"
2617 dnxhd_encoder_select="blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2618 dolby_e_decoder_select="mdct"
2619 dvvideo_decoder_select="dvprofile idctdsp"
2620 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2621 dxa_decoder_deps="zlib"
2622 dxv_decoder_select="lzf texturedsp"
2623 eac3_decoder_select="ac3_decoder"
2624 eac3_encoder_select="ac3_encoder"
2625 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2626 eatgq_decoder_select="aandcttables"
2627 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2628 exr_decoder_deps="zlib"
2629 ffv1_decoder_select="rangecoder"
2630 ffv1_encoder_select="rangecoder"
2631 ffvhuff_decoder_select="huffyuv_decoder"
2632 ffvhuff_encoder_select="huffyuv_encoder"
2633 fic_decoder_select="golomb"
2634 flac_decoder_select="flacdsp"
2635 flac_encoder_select="bswapdsp flacdsp lpc"
2636 flashsv2_decoder_deps="zlib"
2637 flashsv2_encoder_deps="zlib"
2638 flashsv_decoder_deps="zlib"
2639 flashsv_encoder_deps="zlib"
2640 flv_decoder_select="h263_decoder"
2641 flv_encoder_select="h263_encoder"
2642 fourxm_decoder_select="blockdsp bswapdsp"
2643 fraps_decoder_select="bswapdsp huffman"
2644 g2m_decoder_deps="zlib"
2645 g2m_decoder_select="blockdsp idctdsp jpegtables"
2646 g729_decoder_select="audiodsp"
2647 h261_decoder_select="mpegvideo"
2648 h261_encoder_select="mpegvideoenc"
2649 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2650 h263_encoder_select="h263dsp mpegvideoenc"
2651 h263i_decoder_select="h263_decoder"
2652 h263p_decoder_select="h263_decoder"
2653 h263p_encoder_select="h263_encoder"
2654 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2655 h264_decoder_suggest="error_resilience"
2656 hap_decoder_select="snappy texturedsp"
2657 hap_encoder_deps="libsnappy"
2658 hap_encoder_select="texturedspenc"
2659 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2660 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2661 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2662 iac_decoder_select="imc_decoder"
2663 imc_decoder_select="bswapdsp fft mdct sinewin"
2664 indeo3_decoder_select="hpeldsp"
2665 indeo4_decoder_select="ividsp"
2666 indeo5_decoder_select="ividsp"
2667 interplay_video_decoder_select="hpeldsp"
2668 jpegls_decoder_select="mjpeg_decoder"
2669 jv_decoder_select="blockdsp"
2670 lagarith_decoder_select="llviddsp"
2671 ljpeg_encoder_select="idctdsp jpegtables mpegvideoenc"
2672 magicyuv_decoder_select="llviddsp"
2673 magicyuv_encoder_select="llvidencdsp"
2674 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2675 metasound_decoder_select="lsp mdct sinewin"
2676 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2677 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2678 mjpeg_encoder_select="jpegtables mpegvideoenc"
2679 mjpegb_decoder_select="mjpeg_decoder"
2680 mlp_decoder_select="mlp_parser"
2681 mlp_encoder_select="lpc"
2682 motionpixels_decoder_select="bswapdsp"
2683 mp1_decoder_select="mpegaudio"
2684 mp1float_decoder_select="mpegaudio"
2685 mp2_decoder_select="mpegaudio"
2686 mp2float_decoder_select="mpegaudio"
2687 mp3_decoder_select="mpegaudio"
2688 mp3adu_decoder_select="mpegaudio"
2689 mp3adufloat_decoder_select="mpegaudio"
2690 mp3float_decoder_select="mpegaudio"
2691 mp3on4_decoder_select="mpegaudio"
2692 mp3on4float_decoder_select="mpegaudio"
2693 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2694 mpc8_decoder_select="mpegaudiodsp"
2695 mpegvideo_decoder_select="mpegvideo"
2696 mpeg1video_decoder_select="mpegvideo"
2697 mpeg1video_encoder_select="mpegvideoenc h263dsp"
2698 mpeg2video_decoder_select="mpegvideo"
2699 mpeg2video_encoder_select="mpegvideoenc h263dsp"
2700 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2701 mpeg4_encoder_select="h263_encoder"
2702 msa1_decoder_select="mss34dsp"
2703 mscc_decoder_deps="zlib"
2704 msmpeg4v1_decoder_select="h263_decoder"
2705 msmpeg4v2_decoder_select="h263_decoder"
2706 msmpeg4v2_encoder_select="h263_encoder"
2707 msmpeg4v3_decoder_select="h263_decoder"
2708 msmpeg4v3_encoder_select="h263_encoder"
2709 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2710 mts2_decoder_select="mss34dsp"
2711 mwsc_decoder_deps="zlib"
2712 mxpeg_decoder_select="mjpeg_decoder"
2713 nellymoser_decoder_select="mdct sinewin"
2714 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2715 nuv_decoder_select="idctdsp lzo"
2716 on2avc_decoder_select="mdct"
2717 opus_decoder_deps="swresample"
2718 opus_decoder_select="mdct15"
2719 opus_encoder_select="audio_frame_queue mdct15"
2720 png_decoder_deps="zlib"
2721 png_encoder_deps="zlib"
2722 png_encoder_select="llvidencdsp"
2723 prores_decoder_select="blockdsp idctdsp"
2724 prores_encoder_select="fdctdsp"
2725 qcelp_decoder_select="lsp"
2726 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2727 ra_144_decoder_select="audiodsp"
2728 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2729 ralf_decoder_select="golomb"
2730 rasc_decoder_deps="zlib"
2731 rawvideo_decoder_select="bswapdsp"
2732 rscc_decoder_deps="zlib"
2733 rtjpeg_decoder_select="me_cmp"
2734 rv10_decoder_select="h263_decoder"
2735 rv10_encoder_select="h263_encoder"
2736 rv20_decoder_select="h263_decoder"
2737 rv20_encoder_select="h263_encoder"
2738 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2739 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2740 screenpresso_decoder_deps="zlib"
2741 shorten_decoder_select="bswapdsp"
2742 sipr_decoder_select="lsp"
2743 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2744 snow_encoder_select="dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2745 sonic_decoder_select="golomb rangecoder"
2746 sonic_encoder_select="golomb rangecoder"
2747 sonic_ls_encoder_select="golomb rangecoder"
2748 sp5x_decoder_select="mjpeg_decoder"
2749 speedhq_decoder_select="mpegvideo"
2750 srgc_decoder_deps="zlib"
2751 svq1_decoder_select="hpeldsp"
2752 svq1_encoder_select="hpeldsp me_cmp mpegvideoenc"
2753 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2754 svq3_decoder_suggest="zlib"
2755 tak_decoder_select="audiodsp"
2756 tdsc_decoder_deps="zlib"
2757 tdsc_decoder_select="mjpeg_decoder"
2758 theora_decoder_select="vp3_decoder"
2759 thp_decoder_select="mjpeg_decoder"
2760 tiff_decoder_suggest="zlib lzma"
2761 tiff_encoder_suggest="zlib"
2762 truehd_decoder_select="mlp_parser"
2763 truehd_encoder_select="lpc"
2764 truemotion2_decoder_select="bswapdsp"
2765 truespeech_decoder_select="bswapdsp"
2766 tscc_decoder_deps="zlib"
2767 twinvq_decoder_select="mdct lsp sinewin"
2768 txd_decoder_select="texturedsp"
2769 utvideo_decoder_select="bswapdsp llviddsp"
2770 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2771 vble_decoder_select="llviddsp"
2772 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2773 vc1image_decoder_select="vc1_decoder"
2774 vorbis_decoder_select="mdct"
2775 vorbis_encoder_select="audio_frame_queue mdct"
2776 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2777 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2778 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2779 vp6a_decoder_select="vp6_decoder"
2780 vp6f_decoder_select="vp6_decoder"
2781 vp7_decoder_select="h264pred videodsp vp8dsp"
2782 vp8_decoder_select="h264pred videodsp vp8dsp"
2783 vp9_decoder_select="videodsp vp9_parser vp9_superframe_split_bsf"
2784 wcmv_decoder_deps="zlib"
2785 webp_decoder_select="vp8_decoder exif"
2786 wmalossless_decoder_select="llauddsp"
2787 wmapro_decoder_select="mdct sinewin wma_freqs"
2788 wmav1_decoder_select="mdct sinewin wma_freqs"
2789 wmav1_encoder_select="mdct sinewin wma_freqs"
2790 wmav2_decoder_select="mdct sinewin wma_freqs"
2791 wmav2_encoder_select="mdct sinewin wma_freqs"
2792 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2793 wmv1_decoder_select="h263_decoder"
2794 wmv1_encoder_select="h263_encoder"
2795 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2796 wmv2_encoder_select="h263_encoder wmv2dsp"
2797 wmv3_decoder_select="vc1_decoder"
2798 wmv3image_decoder_select="wmv3_decoder"
2799 xma1_decoder_select="wmapro_decoder"
2800 xma2_decoder_select="wmapro_decoder"
2801 zerocodec_decoder_deps="zlib"
2802 zlib_decoder_deps="zlib"
2803 zlib_encoder_deps="zlib"
2804 zmbv_decoder_deps="zlib"
2805 zmbv_encoder_deps="zlib"
2806
2807 # hardware accelerators
2808 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2809 cuda_deps="ffnvcodec"
2810 cuvid_deps="ffnvcodec"
2811 d3d11va_deps="dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2812 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2813 ffnvcodec_deps_any="libdl LoadLibrary"
2814 nvdec_deps="ffnvcodec"
2815 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2816 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2817 xvmc_deps="X11_extensions_XvMClib_h"
2818
2819 h263_vaapi_hwaccel_deps="vaapi"
2820 h263_vaapi_hwaccel_select="h263_decoder"
2821 h263_videotoolbox_hwaccel_deps="videotoolbox"
2822 h263_videotoolbox_hwaccel_select="h263_decoder"
2823 h264_d3d11va_hwaccel_deps="d3d11va"
2824 h264_d3d11va_hwaccel_select="h264_decoder"
2825 h264_d3d11va2_hwaccel_deps="d3d11va"
2826 h264_d3d11va2_hwaccel_select="h264_decoder"
2827 h264_dxva2_hwaccel_deps="dxva2"
2828 h264_dxva2_hwaccel_select="h264_decoder"
2829 h264_nvdec_hwaccel_deps="nvdec"
2830 h264_nvdec_hwaccel_select="h264_decoder"
2831 h264_vaapi_hwaccel_deps="vaapi"
2832 h264_vaapi_hwaccel_select="h264_decoder"
2833 h264_vdpau_hwaccel_deps="vdpau"
2834 h264_vdpau_hwaccel_select="h264_decoder"
2835 h264_videotoolbox_hwaccel_deps="videotoolbox"
2836 h264_videotoolbox_hwaccel_select="h264_decoder"
2837 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2838 hevc_d3d11va_hwaccel_select="hevc_decoder"
2839 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2840 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2841 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2842 hevc_dxva2_hwaccel_select="hevc_decoder"
2843 hevc_nvdec_hwaccel_deps="nvdec"
2844 hevc_nvdec_hwaccel_select="hevc_decoder"
2845 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2846 hevc_vaapi_hwaccel_select="hevc_decoder"
2847 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2848 hevc_vdpau_hwaccel_select="hevc_decoder"
2849 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2850 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2851 mjpeg_nvdec_hwaccel_deps="nvdec"
2852 mjpeg_nvdec_hwaccel_select="mjpeg_decoder"
2853 mjpeg_vaapi_hwaccel_deps="vaapi"
2854 mjpeg_vaapi_hwaccel_select="mjpeg_decoder"
2855 mpeg_xvmc_hwaccel_deps="xvmc"
2856 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2857 mpeg1_nvdec_hwaccel_deps="nvdec"
2858 mpeg1_nvdec_hwaccel_select="mpeg1video_decoder"
2859 mpeg1_vdpau_hwaccel_deps="vdpau"
2860 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2861 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2862 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2863 mpeg1_xvmc_hwaccel_deps="xvmc"
2864 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2865 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2866 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2867 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2868 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2869 mpeg2_dxva2_hwaccel_deps="dxva2"
2870 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2871 mpeg2_nvdec_hwaccel_deps="nvdec"
2872 mpeg2_nvdec_hwaccel_select="mpeg2video_decoder"
2873 mpeg2_vaapi_hwaccel_deps="vaapi"
2874 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2875 mpeg2_vdpau_hwaccel_deps="vdpau"
2876 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2877 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2878 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2879 mpeg2_xvmc_hwaccel_deps="xvmc"
2880 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2881 mpeg4_nvdec_hwaccel_deps="nvdec"
2882 mpeg4_nvdec_hwaccel_select="mpeg4_decoder"
2883 mpeg4_vaapi_hwaccel_deps="vaapi"
2884 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2885 mpeg4_vdpau_hwaccel_deps="vdpau"
2886 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2887 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2888 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2889 vc1_d3d11va_hwaccel_deps="d3d11va"
2890 vc1_d3d11va_hwaccel_select="vc1_decoder"
2891 vc1_d3d11va2_hwaccel_deps="d3d11va"
2892 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2893 vc1_dxva2_hwaccel_deps="dxva2"
2894 vc1_dxva2_hwaccel_select="vc1_decoder"
2895 vc1_nvdec_hwaccel_deps="nvdec"
2896 vc1_nvdec_hwaccel_select="vc1_decoder"
2897 vc1_vaapi_hwaccel_deps="vaapi"
2898 vc1_vaapi_hwaccel_select="vc1_decoder"
2899 vc1_vdpau_hwaccel_deps="vdpau"
2900 vc1_vdpau_hwaccel_select="vc1_decoder"
2901 vp8_nvdec_hwaccel_deps="nvdec"
2902 vp8_nvdec_hwaccel_select="vp8_decoder"
2903 vp8_vaapi_hwaccel_deps="vaapi"
2904 vp8_vaapi_hwaccel_select="vp8_decoder"
2905 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2906 vp9_d3d11va_hwaccel_select="vp9_decoder"
2907 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2908 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2909 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2910 vp9_dxva2_hwaccel_select="vp9_decoder"
2911 vp9_nvdec_hwaccel_deps="nvdec"
2912 vp9_nvdec_hwaccel_select="vp9_decoder"
2913 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2914 vp9_vaapi_hwaccel_select="vp9_decoder"
2915 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2916 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2917 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2918 wmv3_nvdec_hwaccel_select="vc1_nvdec_hwaccel"
2919 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2920 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2921
2922 # hardware-accelerated codecs
2923 omx_deps="libdl pthreads"
2924 omx_rpi_select="omx"
2925 qsv_deps="libmfx"
2926 qsvdec_select="qsv"
2927 qsvenc_select="qsv"
2928 qsvvpp_select="qsv"
2929 vaapi_encode_deps="vaapi"
2930 v4l2_m2m_deps="linux_videodev2_h sem_timedwait"
2931
2932 hwupload_cuda_filter_deps="ffnvcodec"
2933 scale_npp_filter_deps="ffnvcodec libnpp"
2934 scale_cuda_filter_deps="cuda_sdk"
2935 thumbnail_cuda_filter_deps="cuda_sdk"
2936 transpose_npp_filter_deps="ffnvcodec libnpp"
2937
2938 amf_deps_any="libdl LoadLibrary"
2939 nvenc_deps="ffnvcodec"
2940 nvenc_deps_any="libdl LoadLibrary"
2941 nvenc_encoder_deps="nvenc"
2942
2943 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
2944 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
2945 h264_amf_encoder_deps="amf"
2946 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2947 h264_cuvid_decoder_deps="cuvid"
2948 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2949 h264_mediacodec_decoder_deps="mediacodec"
2950 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2951 h264_mmal_decoder_deps="mmal"
2952 h264_nvenc_encoder_deps="nvenc"
2953 h264_omx_encoder_deps="omx"
2954 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec"
2955 h264_qsv_encoder_select="qsvenc"
2956 h264_rkmpp_decoder_deps="rkmpp"
2957 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
2958 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
2959 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
2960 h264_v4l2m2m_decoder_select="h264_mp4toannexb_bsf"
2961 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
2962 hevc_amf_encoder_deps="amf"
2963 hevc_cuvid_decoder_deps="cuvid"
2964 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2965 hevc_mediacodec_decoder_deps="mediacodec"
2966 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2967 hevc_nvenc_encoder_deps="nvenc"
2968 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec"
2969 hevc_qsv_encoder_select="hevcparse qsvenc"
2970 hevc_rkmpp_decoder_deps="rkmpp"
2971 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
2972 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2973 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
2974 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
2975 hevc_v4l2m2m_decoder_select="hevc_mp4toannexb_bsf"
2976 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
2977 mjpeg_cuvid_decoder_deps="cuvid"
2978 mjpeg_qsv_encoder_deps="libmfx"
2979 mjpeg_qsv_encoder_select="qsvenc"
2980 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2981 mjpeg_vaapi_encoder_select="cbs_jpeg jpegtables vaapi_encode"
2982 mpeg1_cuvid_decoder_deps="cuvid"
2983 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
2984 mpeg2_crystalhd_decoder_select="crystalhd"
2985 mpeg2_cuvid_decoder_deps="cuvid"
2986 mpeg2_mmal_decoder_deps="mmal"
2987 mpeg2_mediacodec_decoder_deps="mediacodec"
2988 mpeg2_qsv_decoder_select="qsvdec mpegvideo_parser"
2989 mpeg2_qsv_encoder_select="qsvenc"
2990 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
2991 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
2992 mpeg4_crystalhd_decoder_select="crystalhd"
2993 mpeg4_cuvid_decoder_deps="cuvid"
2994 mpeg4_mediacodec_decoder_deps="mediacodec"
2995 mpeg4_mmal_decoder_deps="mmal"
2996 mpeg4_omx_encoder_deps="omx"
2997 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2998 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2999 msmpeg4_crystalhd_decoder_select="crystalhd"
3000 nvenc_h264_encoder_select="h264_nvenc_encoder"
3001 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
3002 vc1_crystalhd_decoder_select="crystalhd"
3003 vc1_cuvid_decoder_deps="cuvid"
3004 vc1_mmal_decoder_deps="mmal"
3005 vc1_qsv_decoder_select="qsvdec vc1_parser"
3006 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
3007 vp8_cuvid_decoder_deps="cuvid"
3008 vp8_mediacodec_decoder_deps="mediacodec"
3009 vp8_qsv_decoder_select="qsvdec vp8_parser"
3010 vp8_rkmpp_decoder_deps="rkmpp"
3011 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
3012 vp8_vaapi_encoder_select="vaapi_encode"
3013 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
3014 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
3015 vp9_cuvid_decoder_deps="cuvid"
3016 vp9_mediacodec_decoder_deps="mediacodec"
3017 vp9_rkmpp_decoder_deps="rkmpp"
3018 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
3019 vp9_vaapi_encoder_select="vaapi_encode"
3020 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
3021 wmv3_crystalhd_decoder_select="crystalhd"
3022
3023 # parsers
3024 aac_parser_select="adts_header"
3025 av1_parser_select="cbs_av1"
3026 h264_parser_select="golomb h264dsp h264parse"
3027 hevc_parser_select="hevcparse"
3028 mpegaudio_parser_select="mpegaudioheader"
3029 mpegvideo_parser_select="mpegvideo"
3030 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
3031 vc1_parser_select="vc1dsp"
3032
3033 # bitstream_filters
3034 aac_adtstoasc_bsf_select="adts_header"
3035 av1_metadata_bsf_select="cbs_av1"
3036 eac3_core_bsf_select="ac3_parser"
3037 filter_units_bsf_select="cbs"
3038 h264_metadata_bsf_deps="const_nan"
3039 h264_metadata_bsf_select="cbs_h264"
3040 h264_redundant_pps_bsf_select="cbs_h264"
3041 hevc_metadata_bsf_select="cbs_h265"
3042 mjpeg2jpeg_bsf_select="jpegtables"
3043 mpeg2_metadata_bsf_select="cbs_mpeg2"
3044 trace_headers_bsf_select="cbs"
3045 vp9_metadata_bsf_select="cbs_vp9"
3046
3047 # external libraries
3048 aac_at_decoder_deps="audiotoolbox"
3049 aac_at_decoder_select="aac_adtstoasc_bsf"
3050 ac3_at_decoder_deps="audiotoolbox"
3051 ac3_at_decoder_select="ac3_parser"
3052 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
3053 alac_at_decoder_deps="audiotoolbox"
3054 amr_nb_at_decoder_deps="audiotoolbox"
3055 avisynth_deps_any="libdl LoadLibrary"
3056 avisynth_demuxer_deps="avisynth"
3057 avisynth_demuxer_select="riffdec"
3058 eac3_at_decoder_deps="audiotoolbox"
3059 eac3_at_decoder_select="ac3_parser"
3060 gsm_ms_at_decoder_deps="audiotoolbox"
3061 ilbc_at_decoder_deps="audiotoolbox"
3062 mp1_at_decoder_deps="audiotoolbox"
3063 mp2_at_decoder_deps="audiotoolbox"
3064 mp3_at_decoder_deps="audiotoolbox"
3065 mp1_at_decoder_select="mpegaudioheader"
3066 mp2_at_decoder_select="mpegaudioheader"
3067 mp3_at_decoder_select="mpegaudioheader"
3068 pcm_alaw_at_decoder_deps="audiotoolbox"
3069 pcm_mulaw_at_decoder_deps="audiotoolbox"
3070 qdmc_at_decoder_deps="audiotoolbox"
3071 qdm2_at_decoder_deps="audiotoolbox"
3072 aac_at_encoder_deps="audiotoolbox"
3073 aac_at_encoder_select="audio_frame_queue"
3074 alac_at_encoder_deps="audiotoolbox"
3075 alac_at_encoder_select="audio_frame_queue"
3076 ilbc_at_encoder_deps="audiotoolbox"
3077 ilbc_at_encoder_select="audio_frame_queue"
3078 pcm_alaw_at_encoder_deps="audiotoolbox"
3079 pcm_alaw_at_encoder_select="audio_frame_queue"
3080 pcm_mulaw_at_encoder_deps="audiotoolbox"
3081 pcm_mulaw_at_encoder_select="audio_frame_queue"
3082 chromaprint_muxer_deps="chromaprint"
3083 h264_videotoolbox_encoder_deps="pthreads"
3084 h264_videotoolbox_encoder_select="videotoolbox_encoder"
3085 hevc_videotoolbox_encoder_deps="pthreads"
3086 hevc_videotoolbox_encoder_select="videotoolbox_encoder"
3087 libaom_av1_decoder_deps="libaom"
3088 libaom_av1_encoder_deps="libaom"
3089 libaom_av1_encoder_select="extract_extradata_bsf"
3090 libcelt_decoder_deps="libcelt"
3091 libcodec2_decoder_deps="libcodec2"
3092 libcodec2_encoder_deps="libcodec2"
3093 libdavs2_decoder_deps="libdavs2"
3094 libfdk_aac_decoder_deps="libfdk_aac"
3095 libfdk_aac_encoder_deps="libfdk_aac"
3096 libfdk_aac_encoder_select="audio_frame_queue"
3097 libgme_demuxer_deps="libgme"
3098 libgsm_decoder_deps="libgsm"
3099 libgsm_encoder_deps="libgsm"
3100 libgsm_ms_decoder_deps="libgsm"
3101 libgsm_ms_encoder_deps="libgsm"
3102 libilbc_decoder_deps="libilbc"
3103 libilbc_encoder_deps="libilbc"
3104 libkvazaar_encoder_deps="libkvazaar"
3105 libmodplug_demuxer_deps="libmodplug"
3106 libmp3lame_encoder_deps="libmp3lame"
3107 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
3108 libopencore_amrnb_decoder_deps="libopencore_amrnb"
3109 libopencore_amrnb_encoder_deps="libopencore_amrnb"
3110 libopencore_amrnb_encoder_select="audio_frame_queue"
3111 libopencore_amrwb_decoder_deps="libopencore_amrwb"
3112 libopenh264_decoder_deps="libopenh264"
3113 libopenh264_decoder_select="h264_mp4toannexb_bsf"
3114 libopenh264_encoder_deps="libopenh264"
3115 libopenjpeg_decoder_deps="libopenjpeg"
3116 libopenjpeg_encoder_deps="libopenjpeg"
3117 libopenmpt_demuxer_deps="libopenmpt"
3118 libopus_decoder_deps="libopus"
3119 libopus_encoder_deps="libopus"
3120 libopus_encoder_select="audio_frame_queue"
3121 librsvg_decoder_deps="librsvg"
3122 libshine_encoder_deps="libshine"
3123 libshine_encoder_select="audio_frame_queue"
3124 libspeex_decoder_deps="libspeex"
3125 libspeex_encoder_deps="libspeex"
3126 libspeex_encoder_select="audio_frame_queue"
3127 libtheora_encoder_deps="libtheora"
3128 libtwolame_encoder_deps="libtwolame"
3129 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
3130 libvorbis_decoder_deps="libvorbis"
3131 libvorbis_encoder_deps="libvorbis libvorbisenc"
3132 libvorbis_encoder_select="audio_frame_queue"
3133 libvpx_vp8_decoder_deps="libvpx"
3134 libvpx_vp8_encoder_deps="libvpx"
3135 libvpx_vp9_decoder_deps="libvpx"
3136 libvpx_vp9_encoder_deps="libvpx"
3137 libwavpack_encoder_deps="libwavpack"
3138 libwavpack_encoder_select="audio_frame_queue"
3139 libwebp_encoder_deps="libwebp"
3140 libwebp_anim_encoder_deps="libwebp"
3141 libx262_encoder_deps="libx262"
3142 libx264_encoder_deps="libx264"
3143 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
3144 libx264rgb_encoder_select="libx264_encoder"
3145 libx265_encoder_deps="libx265"
3146 libxavs_encoder_deps="libxavs"
3147 libxavs2_encoder_deps="libxavs2"
3148 libxvid_encoder_deps="libxvid"
3149 libzvbi_teletext_decoder_deps="libzvbi"
3150 vapoursynth_demuxer_deps="vapoursynth"
3151 videotoolbox_suggest="coreservices"
3152 videotoolbox_deps="corefoundation coremedia corevideo"
3153 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
3154
3155 # demuxers / muxers
3156 ac3_demuxer_select="ac3_parser"
3157 aiff_muxer_select="iso_media"
3158 asf_demuxer_select="riffdec"
3159 asf_o_demuxer_select="riffdec"
3160 asf_muxer_select="riffenc"
3161 asf_stream_muxer_select="asf_muxer"
3162 avi_demuxer_select="iso_media riffdec exif"
3163 avi_muxer_select="riffenc"
3164 caf_demuxer_select="iso_media riffdec"
3165 caf_muxer_select="iso_media"
3166 dash_muxer_select="mp4_muxer"
3167 dash_demuxer_deps="libxml2"
3168 dirac_demuxer_select="dirac_parser"
3169 dts_demuxer_select="dca_parser"
3170 dtshd_demuxer_select="dca_parser"
3171 dv_demuxer_select="dvprofile"
3172 dv_muxer_select="dvprofile"
3173 dxa_demuxer_select="riffdec"
3174 eac3_demuxer_select="ac3_parser"
3175 f4v_muxer_select="mov_muxer"
3176 fifo_muxer_deps="threads"
3177 flac_demuxer_select="flac_parser"
3178 hds_muxer_select="flv_muxer"
3179 hls_muxer_select="mpegts_muxer"
3180 hls_muxer_suggest="gcrypt openssl"
3181 image2_alias_pix_demuxer_select="image2_demuxer"
3182 image2_brender_pix_demuxer_select="image2_demuxer"
3183 ipod_muxer_select="mov_muxer"
3184 ismv_muxer_select="mov_muxer"
3185 ivf_muxer_select="av1_metadata_bsf vp9_superframe_bsf"
3186 matroska_audio_muxer_select="matroska_muxer"
3187 matroska_demuxer_select="iso_media riffdec"
3188 matroska_demuxer_suggest="bzlib lzo zlib"
3189 matroska_muxer_select="iso_media riffenc"
3190 mmf_muxer_select="riffenc"
3191 mov_demuxer_select="iso_media riffdec"
3192 mov_demuxer_suggest="zlib"
3193 mov_muxer_select="iso_media riffenc rtpenc_chain"
3194 mp3_demuxer_select="mpegaudio_parser"
3195 mp3_muxer_select="mpegaudioheader"
3196 mp4_muxer_select="mov_muxer"
3197 mpegts_demuxer_select="iso_media"
3198 mpegts_muxer_select="adts_muxer latm_muxer"
3199 mpegtsraw_demuxer_select="mpegts_demuxer"
3200 mxf_d10_muxer_select="mxf_muxer"
3201 mxf_opatom_muxer_select="mxf_muxer"
3202 nut_muxer_select="riffenc"
3203 nuv_demuxer_select="riffdec"
3204 oga_muxer_select="ogg_muxer"
3205 ogg_demuxer_select="dirac_parse"
3206 ogv_muxer_select="ogg_muxer"
3207 opus_muxer_select="ogg_muxer"
3208 psp_muxer_select="mov_muxer"
3209 rtp_demuxer_select="sdp_demuxer"
3210 rtp_muxer_select="golomb"
3211 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3212 rtsp_demuxer_select="http_protocol rtpdec"
3213 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3214 sap_demuxer_select="sdp_demuxer"
3215 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3216 sdp_demuxer_select="rtpdec"
3217 smoothstreaming_muxer_select="ismv_muxer"
3218 spdif_demuxer_select="adts_header"
3219 spdif_muxer_select="adts_header"
3220 spx_muxer_select="ogg_muxer"
3221 swf_demuxer_suggest="zlib"
3222 tak_demuxer_select="tak_parser"
3223 tg2_muxer_select="mov_muxer"
3224 tgp_muxer_select="mov_muxer"
3225 vobsub_demuxer_select="mpegps_demuxer"
3226 w64_demuxer_select="wav_demuxer"
3227 w64_muxer_select="wav_muxer"
3228 wav_demuxer_select="riffdec"
3229 wav_muxer_select="riffenc"
3230 webm_muxer_select="iso_media riffenc"
3231 webm_dash_manifest_demuxer_select="matroska_demuxer"
3232 wtv_demuxer_select="mpegts_demuxer riffdec"
3233 wtv_muxer_select="mpegts_muxer riffenc"
3234 xmv_demuxer_select="riffdec"
3235 xwma_demuxer_select="riffdec"
3236
3237 # indevs / outdevs
3238 android_camera_indev_deps="android camera2ndk mediandk pthreads"
3239 android_camera_indev_extralibs="-landroid -lcamera2ndk -lmediandk"
3240 alsa_indev_deps="alsa"
3241 alsa_outdev_deps="alsa"
3242 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3243 avfoundation_indev_suggest="coregraphics applicationservices"
3244 avfoundation_indev_extralibs="-framework Foundation"
3245 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3246 caca_outdev_deps="libcaca"
3247 decklink_deps_any="libdl LoadLibrary"
3248 decklink_indev_deps="decklink threads"
3249 decklink_indev_extralibs="-lstdc++"
3250 decklink_outdev_deps="decklink threads"
3251 decklink_outdev_suggest="libklvanc"
3252 decklink_outdev_extralibs="-lstdc++"
3253 libndi_newtek_indev_deps="libndi_newtek"
3254 libndi_newtek_indev_extralibs="-lndi"
3255 libndi_newtek_outdev_deps="libndi_newtek"
3256 libndi_newtek_outdev_extralibs="-lndi"
3257 dshow_indev_deps="IBaseFilter"
3258 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3259 fbdev_indev_deps="linux_fb_h"
3260 fbdev_outdev_deps="linux_fb_h"
3261 gdigrab_indev_deps="CreateDIBSection"
3262 gdigrab_indev_extralibs="-lgdi32"
3263 gdigrab_indev_select="bmp_decoder"
3264 iec61883_indev_deps="libiec61883"
3265 jack_indev_deps="libjack"
3266 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3267 kmsgrab_indev_deps="libdrm"
3268 lavfi_indev_deps="avfilter"
3269 libcdio_indev_deps="libcdio"
3270 libdc1394_indev_deps="libdc1394"
3271 openal_indev_deps="openal"
3272 opengl_outdev_deps="opengl"
3273 opengl_outdev_suggest="sdl2"
3274 oss_indev_deps_any="sys_soundcard_h"
3275 oss_outdev_deps_any="sys_soundcard_h"
3276 pulse_indev_deps="libpulse"
3277 pulse_outdev_deps="libpulse"
3278 sdl2_outdev_deps="sdl2"
3279 sndio_indev_deps="sndio"
3280 sndio_outdev_deps="sndio"
3281 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3282 v4l2_indev_suggest="libv4l2"
3283 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3284 v4l2_outdev_suggest="libv4l2"
3285 vfwcap_indev_deps="vfw32 vfwcap_defines"
3286 xcbgrab_indev_deps="libxcb"
3287 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3288 xv_outdev_deps="xlib"
3289
3290 # protocols
3291 async_protocol_deps="threads"
3292 bluray_protocol_deps="libbluray"
3293 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3294 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl mbedtls"
3295 ffrtmpcrypt_protocol_select="tcp_protocol"
3296 ffrtmphttp_protocol_conflict="librtmp_protocol"
3297 ffrtmphttp_protocol_select="http_protocol"
3298 ftp_protocol_select="tcp_protocol"
3299 gopher_protocol_select="network"
3300 http_protocol_select="tcp_protocol"
3301 http_protocol_suggest="zlib"
3302 httpproxy_protocol_select="tcp_protocol"
3303 httpproxy_protocol_suggest="zlib"
3304 https_protocol_select="tls_protocol"
3305 https_protocol_suggest="zlib"
3306 icecast_protocol_select="http_protocol"
3307 mmsh_protocol_select="http_protocol"
3308 mmst_protocol_select="network"
3309 rtmp_protocol_conflict="librtmp_protocol"
3310 rtmp_protocol_select="tcp_protocol"
3311 rtmp_protocol_suggest="zlib"
3312 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3313 rtmpe_protocol_suggest="zlib"
3314 rtmps_protocol_conflict="librtmp_protocol"
3315 rtmps_protocol_select="tls_protocol"
3316 rtmps_protocol_suggest="zlib"
3317 rtmpt_protocol_select="ffrtmphttp_protocol"
3318 rtmpt_protocol_suggest="zlib"
3319 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3320 rtmpte_protocol_suggest="zlib"
3321 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3322 rtmpts_protocol_suggest="zlib"
3323 rtp_protocol_select="udp_protocol"
3324 schannel_conflict="openssl gnutls libtls mbedtls"
3325 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3326 sctp_protocol_select="network"
3327 securetransport_conflict="openssl gnutls libtls mbedtls"
3328 srtp_protocol_select="rtp_protocol srtp"
3329 tcp_protocol_select="network"
3330 tls_protocol_deps_any="gnutls openssl schannel securetransport libtls mbedtls"
3331 tls_protocol_select="tcp_protocol"
3332 udp_protocol_select="network"
3333 udplite_protocol_select="network"
3334 unix_protocol_deps="sys_un_h"
3335 unix_protocol_select="network"
3336
3337 # external library protocols
3338 librtmp_protocol_deps="librtmp"
3339 librtmpe_protocol_deps="librtmp"
3340 librtmps_protocol_deps="librtmp"
3341 librtmpt_protocol_deps="librtmp"
3342 librtmpte_protocol_deps="librtmp"
3343 libsmbclient_protocol_deps="libsmbclient gplv3"
3344 libsrt_protocol_deps="libsrt"
3345 libsrt_protocol_select="network"
3346 libssh_protocol_deps="libssh"
3347 libtls_conflict="openssl gnutls mbedtls"
3348
3349 # filters
3350 afftdn_filter_deps="avcodec"
3351 afftdn_filter_select="fft"
3352 afftfilt_filter_deps="avcodec"
3353 afftfilt_filter_select="fft"
3354 afir_filter_deps="avcodec"
3355 afir_filter_select="fft"
3356 amovie_filter_deps="avcodec avformat"
3357 aresample_filter_deps="swresample"
3358 ass_filter_deps="libass"
3359 atempo_filter_deps="avcodec"
3360 atempo_filter_select="rdft"
3361 avgblur_opencl_filter_deps="opencl"
3362 azmq_filter_deps="libzmq"
3363 blackframe_filter_deps="gpl"
3364 bm3d_filter_deps="avcodec"
3365 bm3d_filter_select="dct"
3366 boxblur_filter_deps="gpl"
3367 boxblur_opencl_filter_deps="opencl gpl"
3368 bs2b_filter_deps="libbs2b"
3369 colormatrix_filter_deps="gpl"
3370 convolution_opencl_filter_deps="opencl"
3371 convolve_filter_deps="avcodec"
3372 convolve_filter_select="fft"
3373 coreimage_filter_deps="coreimage appkit"
3374 coreimage_filter_extralibs="-framework OpenGL"
3375 coreimagesrc_filter_deps="coreimage appkit"
3376 coreimagesrc_filter_extralibs="-framework OpenGL"
3377 cover_rect_filter_deps="avcodec avformat gpl"
3378 cropdetect_filter_deps="gpl"
3379 deconvolve_filter_deps="avcodec"
3380 deconvolve_filter_select="fft"
3381 deinterlace_qsv_filter_deps="libmfx"
3382 deinterlace_vaapi_filter_deps="vaapi"
3383 delogo_filter_deps="gpl"
3384 denoise_vaapi_filter_deps="vaapi"
3385 deshake_filter_select="pixelutils"
3386 dilation_opencl_filter_deps="opencl"
3387 drawtext_filter_deps="libfreetype"
3388 drawtext_filter_suggest="libfontconfig libfribidi"
3389 elbg_filter_deps="avcodec"
3390 eq_filter_deps="gpl"
3391 erosion_opencl_filter_deps="opencl"
3392 fftfilt_filter_deps="avcodec"
3393 fftfilt_filter_select="rdft"
3394 fftdnoiz_filter_deps="avcodec"
3395 fftdnoiz_filter_select="fft"
3396 find_rect_filter_deps="avcodec avformat gpl"
3397 firequalizer_filter_deps="avcodec"
3398 firequalizer_filter_select="rdft"
3399 flite_filter_deps="libflite"
3400 framerate_filter_select="pixelutils"
3401 frei0r_filter_deps="frei0r libdl"
3402 frei0r_src_filter_deps="frei0r libdl"
3403 fspp_filter_deps="gpl"
3404 geq_filter_deps="gpl"
3405 histeq_filter_deps="gpl"
3406 hqdn3d_filter_deps="gpl"
3407 interlace_filter_deps="gpl"
3408 kerndeint_filter_deps="gpl"
3409 ladspa_filter_deps="ladspa libdl"
3410 lensfun_filter_deps="liblensfun version3"
3411 lv2_filter_deps="lv2"
3412 mcdeint_filter_deps="avcodec gpl"
3413 movie_filter_deps="avcodec avformat"
3414 mpdecimate_filter_deps="gpl"
3415 mpdecimate_filter_select="pixelutils"
3416 mptestsrc_filter_deps="gpl"
3417 negate_filter_deps="lut_filter"
3418 nnedi_filter_deps="gpl"
3419 ocr_filter_deps="libtesseract"
3420 ocv_filter_deps="libopencv"
3421 openclsrc_filter_deps="opencl"
3422 overlay_opencl_filter_deps="opencl"
3423 overlay_qsv_filter_deps="libmfx"
3424 overlay_qsv_filter_select="qsvvpp"
3425 owdenoise_filter_deps="gpl"
3426 pan_filter_deps="swresample"
3427 perspective_filter_deps="gpl"
3428 phase_filter_deps="gpl"
3429 pp7_filter_deps="gpl"
3430 pp_filter_deps="gpl postproc"
3431 prewitt_opencl_filter_deps="opencl"
3432 procamp_vaapi_filter_deps="vaapi"
3433 program_opencl_filter_deps="opencl"
3434 pullup_filter_deps="gpl"
3435 removelogo_filter_deps="avcodec avformat swscale"
3436 repeatfields_filter_deps="gpl"
3437 resample_filter_deps="avresample"
3438 roberts_opencl_filter_deps="opencl"
3439 rubberband_filter_deps="librubberband"
3440 sab_filter_deps="gpl swscale"
3441 scale2ref_filter_deps="swscale"
3442 scale_filter_deps="swscale"
3443 scale_qsv_filter_deps="libmfx"
3444 select_filter_select="pixelutils"
3445 sharpness_vaapi_filter_deps="vaapi"
3446 showcqt_filter_deps="avcodec avformat swscale"
3447 showcqt_filter_suggest="libfontconfig libfreetype"
3448 showcqt_filter_select="fft"
3449 showfreqs_filter_deps="avcodec"
3450 showfreqs_filter_select="fft"
3451 showspectrum_filter_deps="avcodec"
3452 showspectrum_filter_select="fft"
3453 showspectrumpic_filter_deps="avcodec"
3454 showspectrumpic_filter_select="fft"
3455 signature_filter_deps="gpl avcodec avformat"
3456 smartblur_filter_deps="gpl swscale"
3457 sobel_opencl_filter_deps="opencl"
3458 sofalizer_filter_deps="libmysofa avcodec"
3459 sofalizer_filter_select="fft"
3460 spectrumsynth_filter_deps="avcodec"
3461 spectrumsynth_filter_select="fft"
3462 spp_filter_deps="gpl avcodec"
3463 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3464 sr_filter_deps="avformat swscale"
3465 sr_filter_select="dnn"
3466 stereo3d_filter_deps="gpl"
3467 subtitles_filter_deps="avformat avcodec libass"
3468 super2xsai_filter_deps="gpl"
3469 pixfmts_super2xsai_test_deps="super2xsai_filter"
3470 tinterlace_filter_deps="gpl"
3471 tinterlace_merge_test_deps="tinterlace_filter"
3472 tinterlace_pad_test_deps="tinterlace_filter"
3473 tonemap_filter_deps="const_nan"
3474 tonemap_opencl_filter_deps="opencl const_nan"
3475 unsharp_opencl_filter_deps="opencl"
3476 uspp_filter_deps="gpl avcodec"
3477 vaguedenoiser_filter_deps="gpl"
3478 vidstabdetect_filter_deps="libvidstab"
3479 vidstabtransform_filter_deps="libvidstab"
3480 libvmaf_filter_deps="libvmaf pthreads"
3481 zmq_filter_deps="libzmq"
3482 zoompan_filter_deps="swscale"
3483 zscale_filter_deps="libzimg const_nan"
3484 scale_vaapi_filter_deps="vaapi"
3485 vpp_qsv_filter_deps="libmfx"
3486 vpp_qsv_filter_select="qsvvpp"
3487 yadif_cuda_filter_deps="cuda_sdk"
3488
3489 # examples
3490 avio_dir_cmd_deps="avformat avutil"
3491 avio_reading_deps="avformat avcodec avutil"
3492 decode_audio_example_deps="avcodec avutil"
3493 decode_video_example_deps="avcodec avutil"
3494 demuxing_decoding_example_deps="avcodec avformat avutil"
3495 encode_audio_example_deps="avcodec avutil"
3496 encode_video_example_deps="avcodec avutil"
3497 extract_mvs_example_deps="avcodec avformat avutil"
3498 filter_audio_example_deps="avfilter avutil"
3499 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3500 filtering_video_example_deps="avfilter avcodec avformat avutil"
3501 http_multiclient_example_deps="avformat avutil fork"
3502 hw_decode_example_deps="avcodec avformat avutil"
3503 metadata_example_deps="avformat avutil"
3504 muxing_example_deps="avcodec avformat avutil swscale"
3505 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3506 remuxing_example_deps="avcodec avformat avutil"
3507 resampling_audio_example_deps="avutil swresample"
3508 scaling_video_example_deps="avutil swscale"
3509 transcode_aac_example_deps="avcodec avformat swresample"
3510 transcoding_example_deps="avfilter avcodec avformat avutil"
3511 vaapi_encode_example_deps="avcodec avutil h264_vaapi_encoder"
3512 vaapi_transcode_example_deps="avcodec avformat avutil h264_vaapi_encoder"
3513
3514 # EXTRALIBS_LIST
3515 cpu_init_extralibs="pthreads_extralibs"
3516 cws2fws_extralibs="zlib_extralibs"
3517
3518 # libraries, in any order
3519 avcodec_deps="avutil"
3520 avcodec_suggest="libm"
3521 avcodec_select="null_bsf"
3522 avdevice_deps="avformat avcodec avutil"
3523 avdevice_suggest="libm"
3524 avfilter_deps="avutil"
3525 avfilter_suggest="libm"
3526 avformat_deps="avcodec avutil"
3527 avformat_suggest="libm network zlib"
3528 avresample_deps="avutil"
3529 avresample_suggest="libm"
3530 avutil_suggest="clock_gettime ffnvcodec libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia bcrypt"
3531 postproc_deps="avutil gpl"
3532 postproc_suggest="libm"
3533 swresample_deps="avutil"
3534 swresample_suggest="libm libsoxr"
3535 swscale_deps="avutil"
3536 swscale_suggest="libm"
3537
3538 avcodec_extralibs="pthreads_extralibs iconv_extralibs"
3539 avfilter_extralibs="pthreads_extralibs"
3540 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3541
3542 # programs
3543 ffmpeg_deps="avcodec avfilter avformat"
3544 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3545                null_filter
3546                trim_filter"
3547 ffmpeg_suggest="ole32 psapi shell32"
3548 ffplay_deps="avcodec avformat swscale swresample sdl2"
3549 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3550 ffplay_suggest="shell32"
3551 ffprobe_deps="avcodec avformat"
3552 ffprobe_suggest="shell32"
3553
3554 # documentation
3555 podpages_deps="perl"
3556 manpages_deps="perl pod2man"
3557 htmlpages_deps="perl"
3558 htmlpages_deps_any="makeinfo_html texi2html"
3559 txtpages_deps="perl makeinfo"
3560 doc_deps_any="manpages htmlpages podpages txtpages"
3561
3562 # default parameters
3563
3564 logfile="ffbuild/config.log"
3565
3566 # installation paths
3567 prefix_default="/usr/local"
3568 bindir_default='${prefix}/bin'
3569 datadir_default='${prefix}/share/ffmpeg'
3570 docdir_default='${prefix}/share/doc/ffmpeg'
3571 incdir_default='${prefix}/include'
3572 libdir_default='${prefix}/lib'
3573 mandir_default='${prefix}/share/man'
3574
3575 # toolchain
3576 ar_default="ar"
3577 cc_default="gcc"
3578 cxx_default="g++"
3579 host_cc_default="gcc"
3580 doxygen_default="doxygen"
3581 install="install"
3582 ln_s_default="ln -s -f"
3583 nm_default="nm -g"
3584 pkg_config_default=pkg-config
3585 ranlib_default="ranlib"
3586 strip_default="strip"
3587 version_script='--version-script'
3588 objformat="elf32"
3589 x86asmexe_default="nasm"
3590 windres_default="windres"
3591 nvcc_default="nvcc"
3592 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3593 striptype="direct"
3594
3595 # OS
3596 target_os_default=$(tolower $(uname -s))
3597 host_os=$target_os_default
3598
3599 # machine
3600 if test "$target_os_default" = aix; then
3601     arch_default=$(uname -p)
3602     strip_default="strip -X32_64"
3603 else
3604     arch_default=$(uname -m)
3605 fi
3606 cpu="generic"
3607 intrinsics="none"
3608
3609 # configurable options
3610 enable $PROGRAM_LIST
3611 enable $DOCUMENT_LIST
3612 enable $EXAMPLE_LIST
3613 enable $(filter_out avresample $LIBRARY_LIST)
3614 enable stripping
3615
3616 enable asm
3617 enable debug
3618 enable doc
3619 enable faan faandct faanidct
3620 enable optimizations
3621 enable runtime_cpudetect
3622 enable safe_bitstream_reader
3623 enable static
3624 enable swscale_alpha
3625 enable valgrind_backtrace
3626
3627 sws_max_filter_size_default=256
3628 set_default sws_max_filter_size
3629
3630 # internal components are enabled by default
3631 enable $EXTRALIBS_LIST
3632
3633 # Avoid external, non-system, libraries getting enabled by dependency resolution
3634 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3635
3636 # build settings
3637 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3638 LIBPREF="lib"
3639 LIBSUF=".a"
3640 FULLNAME='$(NAME)$(BUILDSUF)'
3641 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3642 SLIBPREF="lib"
3643 SLIBSUF=".so"
3644 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3645 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3646 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3647 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3648 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3649 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3650 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3651
3652 asflags_filter=echo
3653 cflags_filter=echo
3654 ldflags_filter=echo
3655
3656 AS_C='-c'
3657 AS_O='-o $@'
3658 CC_C='-c'
3659 CC_E='-E -o $@'
3660 CC_O='-o $@'
3661 CXX_C='-c'
3662 CXX_O='-o $@'
3663 OBJCC_C='-c'
3664 OBJCC_E='-E -o $@'
3665 OBJCC_O='-o $@'
3666 X86ASM_O='-o $@'
3667 LD_O='-o $@'
3668 LD_LIB='-l%'
3669 LD_PATH='-L'
3670 HOSTCC_C='-c'
3671 HOSTCC_E='-E -o $@'
3672 HOSTCC_O='-o $@'
3673 HOSTLD_O='-o $@'
3674 NVCC_C='-c'
3675 NVCC_O='-o $@'
3676
3677 host_extralibs='-lm'
3678 host_cflags_filter=echo
3679 host_ldflags_filter=echo
3680
3681 target_path='$(CURDIR)'
3682
3683 # since the object filename is not given with the -MM flag, the compiler
3684 # is only able to print the basename, and we must add the path ourselves
3685 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3686 DEPFLAGS='-MM'
3687
3688 mkdir -p ffbuild
3689
3690 # find source path
3691 if test -f configure; then
3692     source_path=.
3693 else
3694     source_path=$(cd $(dirname "$0"); pwd)
3695     case "$source_path" in
3696         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3697     esac
3698     test -e "$source_path/config.h" &&
3699         die "Out of tree builds are impossible with config.h in source dir."
3700 fi
3701
3702 for v in "$@"; do
3703     r=${v#*=}
3704     l=${v%"$r"}
3705     r=$(sh_quote "$r")
3706     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3707 done
3708
3709 find_things_extern(){
3710     thing=$1
3711     pattern=$2
3712     file=$source_path/$3
3713     out=${4:-$thing}
3714     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$out/p" "$file"
3715 }
3716
3717 find_filters_extern(){
3718     file=$source_path/$1
3719     #sed -n "s/^extern AVFilter ff_\([avfsinkrc]\{2,5\}\)_\(\w\+\);/\2_filter/p" $file
3720     sed -E -n "s/^extern AVFilter ff_([avfsinkrc]{2,5})_([a-zA-Z0-9_]+);/\2_filter/p" $file
3721 }
3722
3723 FILTER_LIST=$(find_filters_extern libavfilter/allfilters.c)
3724 OUTDEV_LIST=$(find_things_extern muxer AVOutputFormat libavdevice/alldevices.c outdev)
3725 INDEV_LIST=$(find_things_extern demuxer AVInputFormat libavdevice/alldevices.c indev)
3726 MUXER_LIST=$(find_things_extern muxer AVOutputFormat libavformat/allformats.c)
3727 DEMUXER_LIST=$(find_things_extern demuxer AVInputFormat libavformat/allformats.c)
3728 ENCODER_LIST=$(find_things_extern encoder AVCodec libavcodec/allcodecs.c)
3729 DECODER_LIST=$(find_things_extern decoder AVCodec libavcodec/allcodecs.c)
3730 CODEC_LIST="
3731     $ENCODER_LIST
3732     $DECODER_LIST
3733 "
3734 PARSER_LIST=$(find_things_extern parser AVCodecParser libavcodec/parsers.c)
3735 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3736 HWACCEL_LIST=$(find_things_extern hwaccel AVHWAccel libavcodec/hwaccels.h)
3737 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3738
3739 AVCODEC_COMPONENTS_LIST="
3740     $BSF_LIST
3741     $DECODER_LIST
3742     $ENCODER_LIST
3743     $HWACCEL_LIST
3744     $PARSER_LIST
3745 "
3746
3747 AVDEVICE_COMPONENTS_LIST="
3748     $INDEV_LIST
3749     $OUTDEV_LIST
3750 "
3751
3752 AVFILTER_COMPONENTS_LIST="
3753     $FILTER_LIST
3754 "
3755
3756 AVFORMAT_COMPONENTS_LIST="
3757     $DEMUXER_LIST
3758     $MUXER_LIST
3759     $PROTOCOL_LIST
3760 "
3761
3762 ALL_COMPONENTS="
3763     $AVCODEC_COMPONENTS_LIST
3764     $AVDEVICE_COMPONENTS_LIST
3765     $AVFILTER_COMPONENTS_LIST
3766     $AVFORMAT_COMPONENTS_LIST
3767 "
3768
3769 for n in $COMPONENT_LIST; do
3770     v=$(toupper ${n%s})_LIST
3771     eval enable \$$v
3772     eval ${n}_if_any="\$$v"
3773 done
3774
3775 enable $ARCH_EXT_LIST
3776
3777 die_unknown(){
3778     echo "Unknown option \"$1\"."
3779     echo "See $0 --help for available options."
3780     exit 1
3781 }
3782
3783 print_in_columns() {
3784     cols=$(expr $ncols / 24)
3785     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3786 }
3787
3788 show_list() {
3789     suffix=_$1
3790     shift
3791     echo $* | sed s/$suffix//g | print_in_columns
3792     exit 0
3793 }
3794
3795 rand_list(){
3796     IFS=', '
3797     set -- $*
3798     unset IFS
3799     for thing; do
3800         comp=${thing%:*}
3801         prob=${thing#$comp}
3802         prob=${prob#:}
3803         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3804         echo "prob ${prob:-0.5}"
3805         printf '%s\n' $comp
3806     done
3807 }
3808
3809 do_random(){
3810     action=$1
3811     shift
3812     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3813     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3814 }
3815
3816 for opt do
3817     optval="${opt#*=}"
3818     case "$opt" in
3819         --extra-ldflags=*)
3820             add_ldflags $optval
3821         ;;
3822         --extra-ldexeflags=*)
3823             add_ldexeflags $optval
3824         ;;
3825         --extra-ldsoflags=*)
3826             add_ldsoflags $optval
3827         ;;
3828         --extra-ldlibflags=*)
3829             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3830                  "removed in the future. Use --extra-ldsoflags instead."
3831             add_ldsoflags $optval
3832         ;;
3833         --extra-libs=*)
3834             add_extralibs $optval
3835         ;;
3836         --disable-devices)
3837             disable $INDEV_LIST $OUTDEV_LIST
3838         ;;
3839         --enable-debug=*)
3840             debuglevel="$optval"
3841         ;;
3842         --disable-programs)
3843             disable $PROGRAM_LIST
3844         ;;
3845         --disable-everything)
3846             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3847         ;;
3848         --disable-all)
3849             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3850             disable $LIBRARY_LIST $PROGRAM_LIST doc
3851             enable avutil
3852         ;;
3853         --enable-random|--disable-random)
3854             action=${opt%%-random}
3855             do_random ${action#--} $COMPONENT_LIST
3856         ;;
3857         --enable-random=*|--disable-random=*)
3858             action=${opt%%-random=*}
3859             do_random ${action#--} $optval
3860         ;;
3861         --enable-sdl)
3862             enable sdl2
3863         ;;
3864         --enable-*=*|--disable-*=*)
3865             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3866             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3867             eval list=\$$(toupper $thing)_LIST
3868             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3869             list=$(filter "$name" $list)
3870             [ "$list" = "" ] && warn "Option $opt did not match anything"
3871             $action $list
3872         ;;
3873         --enable-yasm|--disable-yasm)
3874             warn "The ${opt} option is only provided for compatibility and will be\n"\
3875                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3876             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3877         ;;
3878         --yasmexe=*)
3879             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3880                  "removed in the future. Use --x86asmexe instead."
3881             x86asmexe="$optval"
3882         ;;
3883         --enable-?*|--disable-?*)
3884             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3885             if is_in $option $COMPONENT_LIST; then
3886                 test $action = disable && action=unset
3887                 eval $action \$$(toupper ${option%s})_LIST
3888             elif is_in $option $CMDLINE_SELECT; then
3889                 $action $option
3890             else
3891                 die_unknown $opt
3892             fi
3893         ;;
3894         --list-*)
3895             NAME="${opt#--list-}"
3896             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3897             NAME=${NAME%s}
3898             eval show_list $NAME \$$(toupper $NAME)_LIST
3899         ;;
3900         --help|-h) show_help
3901         ;;
3902         --quiet|-q) quiet=yes
3903         ;;
3904         --fatal-warnings) enable fatal_warnings
3905         ;;
3906         --libfuzzer=*)
3907             libfuzzer_path="$optval"
3908         ;;
3909         *)
3910             optname="${opt%%=*}"
3911             optname="${optname#--}"
3912             optname=$(echo "$optname" | sed 's/-/_/g')
3913             if is_in $optname $CMDLINE_SET; then
3914                 eval $optname='$optval'
3915             elif is_in $optname $CMDLINE_APPEND; then
3916                 append $optname "$optval"
3917             else
3918                 die_unknown $opt
3919             fi
3920         ;;
3921     esac
3922 done
3923
3924 for e in $env; do
3925     eval "export $e"
3926 done
3927
3928 if disabled autodetect; then
3929
3930     # Unless iconv is explicitely disabled by the user, we still want to probe
3931     # for the iconv from the libc.
3932     disabled iconv || enable libc_iconv
3933
3934     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3935     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3936 fi
3937 # Mark specifically enabled, but normally autodetected libraries as requested.
3938 for lib in $AUTODETECT_LIBS; do
3939     enabled $lib && request $lib
3940 done
3941 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
3942 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3943 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3944
3945 disabled logging && logfile=/dev/null
3946
3947 # command line configuration sanity checks
3948
3949 # we need to build at least one lib type
3950 if ! enabled_any static shared; then
3951     cat <<EOF
3952 At least one library type must be built.
3953 Specify --enable-static to build the static libraries or --enable-shared to
3954 build the shared libraries as well. To only build the shared libraries specify
3955 --disable-static in addition to --enable-shared.
3956 EOF
3957     exit 1
3958 fi
3959
3960 die_license_disabled() {
3961     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3962 }
3963
3964 die_license_disabled_gpl() {
3965     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3966 }
3967
3968 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3969 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3970
3971 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3972 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3973
3974 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3975
3976 if enabled nonfree; then
3977     license="nonfree and unredistributable"
3978 elif enabled gplv3; then
3979     license="GPL version 3 or later"
3980 elif enabled lgplv3; then
3981     license="LGPL version 3 or later"
3982 elif enabled gpl; then
3983     license="GPL version 2 or later"
3984 else
3985     license="LGPL version 2.1 or later"
3986 fi
3987
3988 enabled_all gnutls openssl &&
3989     die "GnuTLS and OpenSSL must not be enabled at the same time."
3990
3991 enabled_all gnutls mbedtls &&
3992     die "GnuTLS and mbedTLS must not be enabled at the same time."
3993
3994 enabled_all openssl mbedtls &&
3995     die "OpenSSL and mbedTLS must not be enabled at the same time."
3996
3997 # Disable all the library-specific components if the library itself
3998 # is disabled, see AVCODEC_LIST and following _LIST variables.
3999
4000 disable_components(){
4001     disabled ${1} && disable $(
4002         eval components="\$$(toupper ${1})_COMPONENTS"
4003         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
4004     )
4005 }
4006
4007 map 'disable_components $v' $LIBRARY_LIST
4008
4009 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
4010 set >> $logfile
4011
4012 test -n "$valgrind" && toolchain="valgrind-memcheck"
4013
4014 enabled ossfuzz && ! echo $CFLAGS | grep -q -- "-fsanitize="  && ! echo $CFLAGS | grep -q -- "-fcoverage-mapping" &&{
4015     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
4016     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
4017 }
4018
4019 case "$toolchain" in
4020     *-asan)
4021         cc_default="${toolchain%-asan}"
4022         add_cflags  -fsanitize=address
4023         add_ldflags -fsanitize=address
4024     ;;
4025     *-msan)
4026         cc_default="${toolchain%-msan}"
4027         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
4028         add_ldflags -fsanitize=memory
4029     ;;
4030     *-tsan)
4031         cc_default="${toolchain%-tsan}"
4032         add_cflags  -fsanitize=thread
4033         add_ldflags -fsanitize=thread
4034         case "$toolchain" in
4035             gcc-tsan)
4036                 add_cflags  -fPIC
4037                 add_ldflags -fPIC
4038                 ;;
4039         esac
4040     ;;
4041     *-usan)
4042         cc_default="${toolchain%-usan}"
4043         add_cflags  -fsanitize=undefined
4044         add_ldflags -fsanitize=undefined
4045     ;;
4046     valgrind-*)
4047         target_exec_default="valgrind"
4048         case "$toolchain" in
4049             valgrind-massif)
4050                 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"
4051                 ;;
4052             valgrind-memcheck)
4053                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
4054                 ;;
4055         esac
4056     ;;
4057     msvc)
4058         # Check whether the current MSVC version needs the C99 converter.
4059         # From MSVC 2013 (compiler major version 18) onwards, it does actually
4060         # support enough of C99 to build ffmpeg. Default to the new
4061         # behaviour if the regexp was unable to match anything, since this
4062         # successfully parses the version number of existing supported
4063         # versions that require the converter (MSVC 2010 and 2012).
4064         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
4065         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
4066             cc_default="cl"
4067             cxx_default="cl"
4068         else
4069             die "Unsupported MSVC version (2013 or newer required)"
4070         fi
4071         ld_default="$source_path/compat/windows/mslink"
4072         nm_default="dumpbin -symbols"
4073         ar_default="lib"
4074         case "$arch" in
4075         aarch64|arm64)
4076             as_default="armasm64"
4077             ;;
4078         arm*)
4079             as_default="armasm"
4080             ;;
4081         esac
4082         target_os_default="win32"
4083         # Use a relative path for TMPDIR. This makes sure all the
4084         # ffconf temp files are written with a relative path, avoiding
4085         # issues with msys/win32 path conversion for MSVC parameters
4086         # such as -Fo<file> or -out:<file>.
4087         TMPDIR=.
4088     ;;
4089     icl)
4090         cc_default="icl"
4091         ld_default="xilink"
4092         nm_default="dumpbin -symbols"
4093         ar_default="xilib"
4094         target_os_default="win32"
4095         TMPDIR=.
4096     ;;
4097     gcov)
4098         add_cflags  -fprofile-arcs -ftest-coverage
4099         add_ldflags -fprofile-arcs -ftest-coverage
4100     ;;
4101     llvm-cov)
4102         add_cflags -fprofile-arcs -ftest-coverage
4103         add_ldflags --coverage
4104     ;;
4105     hardened)
4106         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
4107         add_cflags   -fno-strict-overflow -fstack-protector-all
4108         add_ldflags  -Wl,-z,relro -Wl,-z,now
4109         add_cflags   -fPIE
4110         add_ldexeflags -fPIE -pie
4111     ;;
4112     ?*)
4113         die "Unknown toolchain $toolchain"
4114     ;;
4115 esac
4116
4117 if test -n "$cross_prefix"; then
4118     test -n "$arch" && test -n "$target_os" ||
4119         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
4120     enable cross_compile
4121 fi
4122
4123 ar_default="${cross_prefix}${ar_default}"
4124 cc_default="${cross_prefix}${cc_default}"
4125 cxx_default="${cross_prefix}${cxx_default}"
4126 nm_default="${cross_prefix}${nm_default}"
4127 pkg_config_default="${cross_prefix}${pkg_config_default}"
4128 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
4129     ranlib_default="${cross_prefix}${ranlib_default} -D"
4130 else
4131     ranlib_default="${cross_prefix}${ranlib_default}"
4132 fi
4133 strip_default="${cross_prefix}${strip_default}"
4134 windres_default="${cross_prefix}${windres_default}"
4135
4136 sysinclude_default="${sysroot}/usr/include"
4137
4138 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
4139     target_exec target_os x86asmexe nvcc
4140 enabled cross_compile || host_cc_default=$cc
4141 set_default host_cc
4142
4143 pkg_config_fail_message=""
4144 if ! $pkg_config --version >/dev/null 2>&1; then
4145     warn "$pkg_config not found, library detection may fail."
4146     pkg_config=false
4147 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
4148     pkg_config_fail_message="
4149 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
4150 fi
4151
4152 if test $doxygen != $doxygen_default && \
4153   ! $doxygen --version >/dev/null 2>&1; then
4154     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
4155 fi
4156
4157 exesuf() {
4158     case $1 in
4159         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
4160     esac
4161 }
4162
4163 EXESUF=$(exesuf $target_os)
4164 HOSTEXESUF=$(exesuf $host_os)
4165
4166 # set temporary file name
4167 : ${TMPDIR:=$TEMPDIR}
4168 : ${TMPDIR:=$TMP}
4169 : ${TMPDIR:=/tmp}
4170
4171 if [ -n "$tempprefix" ] ; then
4172     mktemp(){
4173         tmpname="$tempprefix.${HOSTNAME}.${UID}"
4174         echo "$tmpname"
4175         mkdir "$tmpname"
4176     }
4177 elif ! test_cmd mktemp -u XXXXXX; then
4178     # simple replacement for missing mktemp
4179     # NOT SAFE FOR GENERAL USE
4180     mktemp(){
4181         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
4182         echo "$tmpname"
4183         mkdir "$tmpname"
4184     }
4185 fi
4186
4187 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
4188     die "Unable to create temporary directory in $TMPDIR."
4189
4190 tmpfile(){
4191     tmp="${FFTMPDIR}/test"$2
4192     (set -C; exec > $tmp) 2> /dev/null ||
4193         die "Unable to create temporary file in $FFTMPDIR."
4194     eval $1=$tmp
4195 }
4196
4197 trap 'rm -rf -- "$FFTMPDIR"' EXIT
4198 trap 'exit 2' INT
4199
4200 tmpfile TMPASM .asm
4201 tmpfile TMPC   .c
4202 tmpfile TMPCPP .cpp
4203 tmpfile TMPE   $EXESUF
4204 tmpfile TMPH   .h
4205 tmpfile TMPM   .m
4206 tmpfile TMPO   .o
4207 tmpfile TMPS   .S
4208 tmpfile TMPSH  .sh
4209 tmpfile TMPV   .ver
4210
4211 unset -f mktemp
4212
4213 chmod +x $TMPE
4214
4215 # make sure we can execute files in $TMPDIR
4216 cat > $TMPSH 2>> $logfile <<EOF
4217 #! /bin/sh
4218 EOF
4219 chmod +x $TMPSH >> $logfile 2>&1
4220 if ! $TMPSH >> $logfile 2>&1; then
4221     cat <<EOF
4222 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
4223 variable to another directory and make sure that it is not mounted noexec.
4224 EOF
4225     die "Sanity test failed."
4226 fi
4227
4228 armasm_flags(){
4229     for flag; do
4230         case $flag in
4231             # Filter out MSVC cl.exe options from cflags that shouldn't
4232             # be passed to gas-preprocessor
4233             -M[TD]*)                                            ;;
4234             *)                  echo $flag                      ;;
4235         esac
4236    done
4237 }
4238
4239 cparser_flags(){
4240     for flag; do
4241         case $flag in
4242             -Wno-switch)             echo -Wno-switch-enum ;;
4243             -Wno-format-zero-length) ;;
4244             -Wdisabled-optimization) ;;
4245             -Wno-pointer-sign)       echo -Wno-other ;;
4246             *)                       echo $flag ;;
4247         esac
4248     done
4249 }
4250
4251 msvc_common_flags(){
4252     for flag; do
4253         case $flag in
4254             # In addition to specifying certain flags under the compiler
4255             # specific filters, they must be specified here as well or else the
4256             # generic catch all at the bottom will print the original flag.
4257             -Wall)                ;;
4258             -Wextra)              ;;
4259             -std=c99)             ;;
4260             # Common flags
4261             -fomit-frame-pointer) ;;
4262             -g)                   echo -Z7 ;;
4263             -fno-math-errno)      ;;
4264             -fno-common)          ;;
4265             -fno-signed-zeros)    ;;
4266             -fPIC)                ;;
4267             -mthumb)              ;;
4268             -march=*)             ;;
4269             -lz)                  echo zlib.lib ;;
4270             -lx264)               echo libx264.lib ;;
4271             -lstdc++)             ;;
4272             -l*)                  echo ${flag#-l}.lib ;;
4273             -LARGEADDRESSAWARE)   echo $flag ;;
4274             -L*)                  echo -libpath:${flag#-L} ;;
4275             *)                    echo $flag ;;
4276         esac
4277     done
4278 }
4279
4280 msvc_flags(){
4281     msvc_common_flags "$@"
4282     for flag; do
4283         case $flag in
4284             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4285                                        -wd4554 ;;
4286             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4287                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4288                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4289                                        -wd4307 \
4290                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4291         esac
4292     done
4293 }
4294
4295 icl_flags(){
4296     msvc_common_flags "$@"
4297     for flag; do
4298         case $flag in
4299             # Despite what Intel's documentation says -Wall, which is supported
4300             # on Windows, does enable remarks so disable them here.
4301             -Wall)                echo $flag -Qdiag-disable:remark ;;
4302             -std=c99)             echo -Qstd=c99 ;;
4303             -flto)                echo -ipo ;;
4304         esac
4305     done
4306 }
4307
4308 icc_flags(){
4309     for flag; do
4310         case $flag in
4311             -flto)                echo -ipo ;;
4312             *)                    echo $flag ;;
4313         esac
4314     done
4315 }
4316
4317 suncc_flags(){
4318     for flag; do
4319         case $flag in
4320             -march=*|-mcpu=*)
4321                 case "${flag#*=}" in
4322                     native)                   echo -xtarget=native       ;;
4323                     v9|niagara)               echo -xarch=sparc          ;;
4324                     ultrasparc)               echo -xarch=sparcvis       ;;
4325                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4326                     i586|pentium)             echo -xchip=pentium        ;;
4327                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4328                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4329                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4330                     pentium4*)          echo -xtarget=pentium4           ;;
4331                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4332                     *-sse3)             echo -xarch=sse3                 ;;
4333                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4334                     bonnell)                   echo -xarch=ssse3         ;;
4335                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4336                     westmere)                  echo -xtarget=westmere    ;;
4337                     silvermont)                echo -xarch=sse4_2        ;;
4338                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4339                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4340                                                echo -xarch=avx           ;;
4341                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4342                     btver1)                    echo -xarch=amdsse4a      ;;
4343                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4344                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4345                     k8|opteron|athlon64|athlon-fx)
4346                                                echo -xarch=sse2a         ;;
4347                     athlon*)                   echo -xarch=pentium_proa  ;;
4348                 esac
4349                 ;;
4350             -std=c99)             echo -xc99              ;;
4351             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4352             -fPIC)                echo -KPIC -xcode=pic32 ;;
4353             -W*,*)                echo $flag              ;;
4354             -f*-*|-W*|-mimpure-text)                      ;;
4355             -shared)              echo -G                 ;;
4356             *)                    echo $flag              ;;
4357         esac
4358     done
4359 }
4360
4361 probe_cc(){
4362     pfx=$1
4363     _cc=$2
4364     first=$3
4365
4366     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4367     unset _ld_o _ldflags _ld_lib _ld_path
4368     unset _depflags _DEPCMD _DEPFLAGS
4369     _flags_filter=echo
4370
4371     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4372         true # no-op to avoid reading stdin in following checks
4373     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4374         _type=llvm_gcc
4375         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4376         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4377         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4378         _cflags_speed='-O3'
4379         _cflags_size='-Os'
4380     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4381         _type=gcc
4382         gcc_version=$($_cc --version | head -n1)
4383         gcc_basever=$($_cc -dumpversion)
4384         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4385         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4386         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4387         case $gcc_basever in
4388             2) ;;
4389             2.*) ;;
4390             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4391         esac
4392         if [ "$first" = true ]; then
4393             case $gcc_basever in
4394                 4.2*)
4395                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4396             esac
4397         fi
4398         _cflags_speed='-O3'
4399         _cflags_size='-Os'
4400     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4401         _type=icc
4402         _ident=$($_cc --version | head -n1)
4403         _depflags='-MMD'
4404         _cflags_speed='-O3'
4405         _cflags_size='-Os'
4406         _cflags_noopt='-O1'
4407         _flags_filter=icc_flags
4408     elif $_cc -v 2>&1 | grep -q xlc; then
4409         _type=xlc
4410         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4411         _cflags_speed='-O5'
4412         _cflags_size='-O5 -qcompact'
4413     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4414         test -d "$sysroot" || die "No valid sysroot specified."
4415         _type=armcc
4416         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4417         armcc_conf="$PWD/armcc.conf"
4418         $_cc --arm_linux_configure                 \
4419              --arm_linux_config_file="$armcc_conf" \
4420              --configure_sysroot="$sysroot"        \
4421              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4422              die "Error creating armcc configuration file."
4423         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4424         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4425         as_default="${cross_prefix}gcc"
4426         _depflags='-MMD'
4427         _cflags_speed='-O3'
4428         _cflags_size='-Os'
4429     elif $_cc -v 2>&1 | grep -q clang && ! $_cc -? > /dev/null 2>&1; then
4430         _type=clang
4431         _ident=$($_cc --version 2>/dev/null | head -n1)
4432         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4433         _cflags_speed='-O3'
4434         _cflags_size='-Oz'
4435     elif $_cc -V 2>&1 | grep -q Sun; then
4436         _type=suncc
4437         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4438         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4439         _DEPFLAGS='-xM1 -xc99'
4440         _ldflags='-std=c99'
4441         _cflags_speed='-O5'
4442         _cflags_size='-O5 -xspace'
4443         _flags_filter=suncc_flags
4444     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4445         _type=pathscale
4446         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4447         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4448         _cflags_speed='-O2'
4449         _cflags_size='-Os'
4450         _flags_filter='filter_out -Wdisabled-optimization'
4451     elif $_cc -v 2>&1 | grep -q Open64; then
4452         _type=open64
4453         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4454         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4455         _cflags_speed='-O2'
4456         _cflags_size='-Os'
4457         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4458     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4459         _type=armasm
4460         _ident=$($_cc | head -n1)
4461         # 4509: "This form of conditional instruction is deprecated"
4462         _flags="-nologo -ignore 4509"
4463         _flags_filter=armasm_flags
4464     elif $_cc 2>&1 | grep -q Intel; then
4465         _type=icl
4466         _ident=$($_cc 2>&1 | head -n1)
4467         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4468         # Not only is O3 broken on 13.x+ but it is slower on all previous
4469         # versions (tested) as well.
4470         _cflags_speed="-O2"
4471         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4472         if $_cc 2>&1 | grep -q Linker; then
4473             _ld_o='-out:$@'
4474         else
4475             _ld_o='-Fe$@'
4476         fi
4477         _cc_o='-Fo$@'
4478         _cc_e='-P'
4479         _flags_filter=icl_flags
4480         _ld_lib='lib%.a'
4481         _ld_path='-libpath:'
4482         # -Qdiag-error to make icl error when seeing certain unknown arguments
4483         _flags='-nologo -Qdiag-error:4044,10157'
4484         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4485         # with MSVC which enables it by default.
4486         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4487         disable stripping
4488     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4489         # lld can emulate multiple different linkers; in ms link.exe mode,
4490         # the -? parameter gives the help output which contains an identifyable
4491         # string, while it gives an error in other modes.
4492         _type=lld-link
4493         # The link.exe mode doesn't have a switch for getting the version,
4494         # but we can force it back to gnu mode and get the version from there.
4495         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4496         _ld_o='-out:$@'
4497         _flags_filter=msvc_flags
4498         _ld_lib='lib%.a'
4499         _ld_path='-libpath:'
4500     elif $_cc -nologo- 2>&1 | grep -q Microsoft || { $_cc -v 2>&1 | grep -q clang && $_cc -? > /dev/null 2>&1; }; then
4501         _type=msvc
4502         _ident=$($_cc 2>&1 | head -n1 | tr -d '\r')
4503         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4504         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4505         _cflags_speed="-O2"
4506         _cflags_size="-O1"
4507         _cflags_noopt="-O1"
4508         if $_cc -nologo- 2>&1 | grep -q Linker; then
4509             _ld_o='-out:$@'
4510         else
4511             _ld_o='-Fe$@'
4512         fi
4513         _cc_o='-Fo$@'
4514         _cc_e='-P -Fi$@'
4515         _flags_filter=msvc_flags
4516         _ld_lib='lib%.a'
4517         _ld_path='-libpath:'
4518         _flags='-nologo'
4519         disable stripping
4520     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4521         _type=cparser
4522         _ident=$($_cc --version | head -n1)
4523         _depflags='-MMD'
4524         _cflags_speed='-O4'
4525         _cflags_size='-O2'
4526         _flags_filter=cparser_flags
4527     fi
4528
4529     eval ${pfx}_type=\$_type
4530     eval ${pfx}_ident=\$_ident
4531 }
4532
4533 set_ccvars(){
4534     eval ${1}_C=\${_cc_c-\${${1}_C}}
4535     eval ${1}_E=\${_cc_e-\${${1}_E}}
4536     eval ${1}_O=\${_cc_o-\${${1}_O}}
4537
4538     if [ -n "$_depflags" ]; then
4539         eval ${1}_DEPFLAGS=\$_depflags
4540     else
4541         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4542         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4543         eval DEP${1}FLAGS=\$_flags
4544     fi
4545 }
4546
4547 probe_cc cc "$cc" "true"
4548 cflags_filter=$_flags_filter
4549 cflags_speed=$_cflags_speed
4550 cflags_size=$_cflags_size
4551 cflags_noopt=$_cflags_noopt
4552 add_cflags $_flags $_cflags
4553 cc_ldflags=$_ldflags
4554 set_ccvars CC
4555 set_ccvars CXX
4556
4557 probe_cc hostcc "$host_cc"
4558 host_cflags_filter=$_flags_filter
4559 host_cflags_speed=$_cflags_speed
4560 add_host_cflags  $_flags $_cflags
4561 set_ccvars HOSTCC
4562
4563 test -n "$cc_type" && enable $cc_type ||
4564     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4565
4566 : ${as_default:=$cc}
4567 : ${objcc_default:=$cc}
4568 : ${dep_cc_default:=$cc}
4569 : ${ld_default:=$cc}
4570 : ${host_ld_default:=$host_cc}
4571 set_default ar as objcc dep_cc ld ln_s host_ld windres
4572
4573 probe_cc as "$as"
4574 asflags_filter=$_flags_filter
4575 add_asflags $_flags $_cflags
4576 set_ccvars AS
4577
4578 probe_cc objcc "$objcc"
4579 objcflags_filter=$_flags_filter
4580 add_objcflags $_flags $_cflags
4581 set_ccvars OBJC
4582
4583 probe_cc ld "$ld"
4584 ldflags_filter=$_flags_filter
4585 add_ldflags $_flags $_ldflags
4586 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4587 LD_O=${_ld_o-$LD_O}
4588 LD_LIB=${_ld_lib-$LD_LIB}
4589 LD_PATH=${_ld_path-$LD_PATH}
4590
4591 probe_cc hostld "$host_ld"
4592 host_ldflags_filter=$_flags_filter
4593 add_host_ldflags $_flags $_ldflags
4594 HOSTLD_O=${_ld_o-$HOSTLD_O}
4595
4596 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4597     probe_cc depcc "$dep_cc"
4598     CCDEP=${_DEPCMD:-$DEPCMD}
4599     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4600     DEPCCFLAGS=$_flags
4601 fi
4602
4603 if $ar 2>&1 | grep -q Microsoft; then
4604     arflags="-nologo"
4605     ar_o='-out:$@'
4606 elif $ar 2>&1 | grep -q "\[D\] "; then
4607     arflags="rcD"
4608     ar_o='$@'
4609 else
4610     arflags="rc"
4611     ar_o='$@'
4612 fi
4613
4614 add_cflags $extra_cflags
4615 add_cxxflags $extra_cxxflags
4616 add_objcflags $extra_objcflags
4617 add_asflags $extra_cflags
4618
4619 if test -n "$sysroot"; then
4620     case "$cc_type" in
4621         gcc|llvm_gcc|clang)
4622             add_cppflags --sysroot="$sysroot"
4623             add_ldflags --sysroot="$sysroot"
4624         ;;
4625     esac
4626 fi
4627
4628 if test "$cpu" = host; then
4629     enabled cross_compile &&
4630         die "--cpu=host makes no sense when cross-compiling."
4631
4632     case "$cc_type" in
4633         gcc|llvm_gcc)
4634             check_native(){
4635                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4636                 sed -n "/cc1.*$1=/{
4637                             s/.*$1=\\([^ ]*\\).*/\\1/
4638                             p
4639                             q
4640                         }" $TMPE
4641             }
4642             cpu=$(check_native -march || check_native -mcpu)
4643         ;;
4644         clang)
4645             check_native(){
4646                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4647                 sed -n "/cc1.*-target-cpu /{
4648                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4649                             p
4650                             q
4651                         }" $TMPE
4652             }
4653             cpu=$(check_native -march)
4654         ;;
4655     esac
4656
4657     test "${cpu:-host}" = host &&
4658         die "--cpu=host not supported with compiler $cc"
4659 fi
4660
4661 # Deal with common $arch aliases
4662 case "$arch" in
4663     aarch64|arm64)
4664         arch="aarch64"
4665     ;;
4666     arm*|iPad*|iPhone*)
4667         arch="arm"
4668     ;;
4669     mips*|IP*)
4670         case "$arch" in
4671         *el)
4672             add_cppflags -EL
4673             add_ldflags -EL
4674         ;;
4675         *eb)
4676             add_cppflags -EB
4677             add_ldflags -EB
4678         ;;
4679         esac
4680         arch="mips"
4681     ;;
4682     parisc*|hppa*)
4683         arch="parisc"
4684     ;;
4685     "Power Macintosh"|ppc*|powerpc*)
4686         arch="ppc"
4687     ;;
4688     s390|s390x)
4689         arch="s390"
4690     ;;
4691     sh4|sh)
4692         arch="sh4"
4693     ;;
4694     sun4*|sparc*)
4695         arch="sparc"
4696     ;;
4697     tilegx|tile-gx)
4698         arch="tilegx"
4699     ;;
4700     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4701         arch="x86"
4702     ;;
4703 esac
4704
4705 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4706 enable $arch
4707
4708 # Add processor-specific flags
4709 if enabled aarch64; then
4710
4711     case $cpu in
4712         armv*)
4713             cpuflags="-march=$cpu"
4714         ;;
4715         *)
4716             cpuflags="-mcpu=$cpu"
4717         ;;
4718     esac
4719
4720 elif enabled alpha; then
4721
4722     cpuflags="-mcpu=$cpu"
4723
4724 elif enabled arm; then
4725
4726     check_arm_arch() {
4727         test_cpp_condition stddef.h \
4728             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4729             $cpuflags
4730     }
4731
4732     probe_arm_arch() {
4733         if   check_arm_arch 4;        then echo armv4
4734         elif check_arm_arch 4T;       then echo armv4t
4735         elif check_arm_arch 5;        then echo armv5
4736         elif check_arm_arch 5E;       then echo armv5e
4737         elif check_arm_arch 5T;       then echo armv5t
4738         elif check_arm_arch 5TE;      then echo armv5te
4739         elif check_arm_arch 5TEJ;     then echo armv5te
4740         elif check_arm_arch 6;        then echo armv6
4741         elif check_arm_arch 6J;       then echo armv6j
4742         elif check_arm_arch 6K;       then echo armv6k
4743         elif check_arm_arch 6Z;       then echo armv6z
4744         elif check_arm_arch 6KZ;      then echo armv6zk
4745         elif check_arm_arch 6ZK;      then echo armv6zk
4746         elif check_arm_arch 6T2;      then echo armv6t2
4747         elif check_arm_arch 7;        then echo armv7
4748         elif check_arm_arch 7A  7_A;  then echo armv7-a
4749         elif check_arm_arch 7S;       then echo armv7-a
4750         elif check_arm_arch 7R  7_R;  then echo armv7-r
4751         elif check_arm_arch 7M  7_M;  then echo armv7-m
4752         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4753         elif check_arm_arch 8A  8_A;  then echo armv8-a
4754         fi
4755     }
4756
4757     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4758
4759     case $cpu in
4760         armv*)
4761             cpuflags="-march=$cpu"
4762             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4763         ;;
4764         *)
4765             cpuflags="-mcpu=$cpu"
4766             case $cpu in
4767                 cortex-a*)                               subarch=armv7a  ;;
4768                 cortex-r*)                               subarch=armv7r  ;;
4769                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4770                 arm11*)                                  subarch=armv6   ;;
4771                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4772                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4773                 *)                             subarch=$(probe_arm_arch) ;;
4774             esac
4775         ;;
4776     esac
4777
4778     case "$subarch" in
4779         armv5t*)    enable fast_clz                ;;
4780         armv[6-8]*)
4781             enable fast_clz
4782             disabled fast_unaligned || enable fast_unaligned
4783             ;;
4784     esac
4785
4786 elif enabled avr32; then
4787
4788     case $cpu in
4789         ap7[02]0[0-2])
4790             subarch="avr32_ap"
4791             cpuflags="-mpart=$cpu"
4792         ;;
4793         ap)
4794             subarch="avr32_ap"
4795             cpuflags="-march=$cpu"
4796         ;;
4797         uc3[ab]*)
4798             subarch="avr32_uc"
4799             cpuflags="-mcpu=$cpu"
4800         ;;
4801         uc)
4802             subarch="avr32_uc"
4803             cpuflags="-march=$cpu"
4804         ;;
4805     esac
4806
4807 elif enabled bfin; then
4808
4809     cpuflags="-mcpu=$cpu"
4810
4811 elif enabled mips; then
4812
4813     cpuflags="-march=$cpu"
4814
4815     if [ "$cpu" != "generic" ]; then
4816         disable mips32r2
4817         disable mips32r5
4818         disable mips64r2
4819         disable mips32r6
4820         disable mips64r6
4821         disable loongson2
4822         disable loongson3
4823
4824         case $cpu in
4825             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4826                 enable mips32r2
4827                 disable msa
4828             ;;
4829             p5600|i6400|p6600)
4830                 disable mipsdsp
4831                 disable mipsdspr2
4832             ;;
4833             loongson*)
4834                 enable loongson2
4835                 enable loongson3
4836                 enable local_aligned
4837                 enable simd_align_16
4838                 enable fast_64bit
4839                 enable fast_clz
4840                 enable fast_cmov
4841                 enable fast_unaligned
4842                 disable aligned_stack
4843                 disable mipsfpu
4844                 disable mipsdsp
4845                 disable mipsdspr2
4846                 # When gcc version less than 5.3.0, add -fno-expensive-optimizations flag.
4847                 if [ $cc == gcc ]; then
4848                     gcc_version=$(gcc -dumpversion)
4849                     if [ "$(echo "$gcc_version 5.3.0" | tr " " "\n" | sort -rV | head -n 1)" == "$gcc_version" ]; then
4850                         expensive_optimization_flag=""
4851                     else
4852                         expensive_optimization_flag="-fno-expensive-optimizations"
4853                     fi
4854                 fi
4855                 case $cpu in
4856                     loongson3*)
4857                         cpuflags="-march=loongson3a -mhard-float $expensive_optimization_flag"
4858                     ;;
4859                     loongson2e)
4860                         cpuflags="-march=loongson2e -mhard-float $expensive_optimization_flag"
4861                     ;;
4862                     loongson2f)
4863                         cpuflags="-march=loongson2f -mhard-float $expensive_optimization_flag"
4864                     ;;
4865                 esac
4866             ;;
4867             *)
4868                 # Unknown CPU. Disable everything.
4869                 warn "unknown CPU. Disabling all MIPS optimizations."
4870                 disable mipsfpu
4871                 disable mipsdsp
4872                 disable mipsdspr2
4873                 disable msa
4874                 disable mmi
4875             ;;
4876         esac
4877
4878         case $cpu in
4879             24kc)
4880                 disable mipsfpu
4881                 disable mipsdsp
4882                 disable mipsdspr2
4883             ;;
4884             24kf*)
4885                 disable mipsdsp
4886                 disable mipsdspr2
4887             ;;
4888             24kec|34kc|1004kc)
4889                 disable mipsfpu
4890                 disable mipsdspr2
4891             ;;
4892             24kef*|34kf*|1004kf*)
4893                 disable mipsdspr2
4894             ;;
4895             74kc)
4896                 disable mipsfpu
4897             ;;
4898             p5600)
4899                 enable mips32r5
4900                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4901             ;;
4902             i6400)
4903                 enable mips64r6
4904                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4905             ;;
4906             p6600)
4907                 enable mips64r6
4908                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4909             ;;
4910         esac
4911     else
4912         # We do not disable anything. Is up to the user to disable the unwanted features.
4913         warn 'generic cpu selected'
4914     fi
4915
4916 elif enabled ppc; then
4917
4918     disable ldbrx
4919
4920     case $(tolower $cpu) in
4921         601|ppc601|powerpc601)
4922             cpuflags="-mcpu=601"
4923             disable altivec
4924         ;;
4925         603*|ppc603*|powerpc603*)
4926             cpuflags="-mcpu=603"
4927             disable altivec
4928         ;;
4929         604*|ppc604*|powerpc604*)
4930             cpuflags="-mcpu=604"
4931             disable altivec
4932         ;;
4933         g3|75*|ppc75*|powerpc75*)
4934             cpuflags="-mcpu=750"
4935             disable altivec
4936         ;;
4937         g4|745*|ppc745*|powerpc745*)
4938             cpuflags="-mcpu=7450"
4939             disable vsx
4940         ;;
4941         74*|ppc74*|powerpc74*)
4942             cpuflags="-mcpu=7400"
4943             disable vsx
4944         ;;
4945         g5|970|ppc970|powerpc970)
4946             cpuflags="-mcpu=970"
4947             disable vsx
4948         ;;
4949         power[3-6]*)
4950             cpuflags="-mcpu=$cpu"
4951             disable vsx
4952         ;;
4953         power[7-8]*)
4954             cpuflags="-mcpu=$cpu"
4955         ;;
4956         cell)
4957             cpuflags="-mcpu=cell"
4958             enable ldbrx
4959             disable vsx
4960         ;;
4961         e500mc)
4962             cpuflags="-mcpu=e500mc"
4963             disable altivec
4964         ;;
4965         e500v2)
4966             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4967             disable altivec
4968             disable dcbzl
4969         ;;
4970         e500)
4971             cpuflags="-mcpu=8540 -mhard-float"
4972             disable altivec
4973             disable dcbzl
4974         ;;
4975     esac
4976
4977 elif enabled sparc; then
4978
4979     case $cpu in
4980         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4981             cpuflags="-mcpu=$cpu"
4982         ;;
4983         ultrasparc*|niagara[234])
4984             cpuflags="-mcpu=$cpu"
4985         ;;
4986     esac
4987
4988 elif enabled x86; then
4989
4990     case $cpu in
4991         i[345]86|pentium)
4992             cpuflags="-march=$cpu"
4993             disable i686
4994             disable mmx
4995         ;;
4996         # targets that do NOT support nopl and conditional mov (cmov)
4997         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4998             cpuflags="-march=$cpu"
4999             disable i686
5000         ;;
5001         # targets that do support nopl and conditional mov (cmov)
5002         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
5003         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
5004         |amdfam10|barcelona|b[dt]ver*|znver*)
5005             cpuflags="-march=$cpu"
5006             enable i686
5007             enable fast_cmov
5008         ;;
5009         # targets that do support conditional mov but on which it's slow
5010         pentium4|pentium4m|prescott|nocona)
5011             cpuflags="-march=$cpu"
5012             enable i686
5013             disable fast_cmov
5014         ;;
5015     esac
5016
5017 fi
5018
5019 if [ "$cpu" != generic ]; then
5020     add_cflags  $cpuflags
5021     add_asflags $cpuflags
5022     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
5023 fi
5024
5025 # compiler sanity check
5026 test_exec <<EOF
5027 int main(void){ return 0; }
5028 EOF
5029 if test "$?" != 0; then
5030     echo "$cc is unable to create an executable file."
5031     if test -z "$cross_prefix" && ! enabled cross_compile ; then
5032         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
5033         echo "Only do this if you know what cross compiling means."
5034     fi
5035     die "C compiler test failed."
5036 fi
5037
5038 add_cppflags -D_ISOC99_SOURCE
5039 add_cxxflags -D__STDC_CONSTANT_MACROS
5040 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
5041
5042 # some compilers silently accept -std=c11, so we also need to check that the
5043 # version macro is defined properly
5044 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
5045     add_cflags -std=c11 ||
5046     check_cflags -std=c99
5047
5048 check_cppflags -D_FILE_OFFSET_BITS=64
5049 check_cppflags -D_LARGEFILE_SOURCE
5050
5051 add_host_cppflags -D_ISOC99_SOURCE
5052 check_host_cflags -std=c99
5053 check_host_cflags -Wall
5054 check_host_cflags $host_cflags_speed
5055
5056 check_64bit(){
5057     arch32=$1
5058     arch64=$2
5059     expr=${3:-'sizeof(void *) > 4'}
5060     test_code cc "" "int test[2*($expr) - 1]" &&
5061         subarch=$arch64 || subarch=$arch32
5062     enable $subarch
5063 }
5064
5065 case "$arch" in
5066     aarch64|alpha|ia64)
5067         enabled shared && enable_weak pic
5068     ;;
5069     mips)
5070         check_64bit mips mips64 '_MIPS_SIM > 1'
5071         enabled shared && enable_weak pic
5072     ;;
5073     parisc)
5074         check_64bit parisc parisc64
5075         enabled shared && enable_weak pic
5076     ;;
5077     ppc)
5078         check_64bit ppc ppc64
5079         enabled shared && enable_weak pic
5080     ;;
5081     s390)
5082         check_64bit s390 s390x
5083         enabled shared && enable_weak pic
5084     ;;
5085     sparc)
5086         check_64bit sparc sparc64
5087         enabled shared && enable_weak pic
5088     ;;
5089     x86)
5090         check_64bit x86_32 x86_64
5091         # Treat x32 as x64 for now. Note it also needs pic if shared
5092         test "$subarch" = "x86_32" && test_cpp_condition stddef.h 'defined(__x86_64__)' &&
5093             subarch=x86_64 && enable x86_64 && disable x86_32
5094         if enabled x86_64; then
5095             enabled shared && enable_weak pic
5096             objformat=elf64
5097         fi
5098     ;;
5099 esac
5100
5101 # OS specific
5102 case $target_os in
5103     aix)
5104         SHFLAGS=-shared
5105         add_cppflags '-I\$(SRC_PATH)/compat/aix'
5106         enabled shared && add_ldflags -Wl,-brtl
5107         arflags='-Xany -r -c'
5108         striptype=""
5109         ;;
5110     android)
5111         disable symver
5112         enable section_data_rel_ro
5113         add_cflags -fPIE
5114         add_ldexeflags -fPIE -pie
5115         SLIB_INSTALL_NAME='$(SLIBNAME)'
5116         SLIB_INSTALL_LINKS=
5117         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
5118         ;;
5119     haiku)
5120         prefix_default="/boot/common"
5121         network_extralibs="-lnetwork"
5122         host_extralibs=
5123         ;;
5124     sunos)
5125         SHFLAGS='-shared -Wl,-h,$$(@F)'
5126         enabled x86 && append SHFLAGS -mimpure-text
5127         network_extralibs="-lsocket -lnsl"
5128         add_cppflags -D__EXTENSIONS__
5129         # When using suncc to build, the Solaris linker will mark
5130         # an executable with each instruction set encountered by
5131         # the Solaris assembler.  As our libraries contain their own
5132         # guards for processor-specific code, instead suppress
5133         # generation of the HWCAPS ELF section on Solaris x86 only.
5134         enabled_all suncc x86 &&
5135             echo "hwcap_1 = OVERRIDE;" > mapfile &&
5136             add_ldflags -Wl,-M,mapfile
5137         nm_default='nm -P -g'
5138         version_script='-M'
5139         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
5140         ;;
5141     netbsd)
5142         disable symver
5143         oss_indev_extralibs="-lossaudio"
5144         oss_outdev_extralibs="-lossaudio"
5145         enabled gcc || check_ldflags -Wl,-zmuldefs
5146         ;;
5147     openbsd|bitrig)
5148         disable symver
5149         striptype=""
5150         SHFLAGS='-shared'
5151         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
5152         SLIB_INSTALL_LINKS=
5153         oss_indev_extralibs="-lossaudio"
5154         oss_outdev_extralibs="-lossaudio"
5155         ;;
5156     dragonfly)
5157         disable symver
5158         ;;
5159     freebsd)
5160         ;;
5161     bsd/os)
5162         add_extralibs -lpoll -lgnugetopt
5163         strip="strip -d"
5164         ;;
5165     darwin)
5166         enabled ppc && add_asflags -force_cpusubtype_ALL
5167         install_name_dir_default='$(SHLIBDIR)'
5168         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
5169         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
5170         strip="${strip} -x"
5171         add_ldflags -Wl,-dynamic,-search_paths_first
5172         check_cflags -Werror=partial-availability
5173         SLIBSUF=".dylib"
5174         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
5175         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
5176         enabled x86_64 && objformat="macho64" || objformat="macho32"
5177         enabled_any pic shared x86_64 ||
5178             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
5179         check_headers dispatch/dispatch.h &&
5180             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
5181         if test -n "$sysroot"; then
5182             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
5183             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
5184         fi
5185         version_script='-exported_symbols_list'
5186         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
5187         ;;
5188     msys*)
5189         die "Native MSYS builds are discouraged, please use the MINGW environment."
5190         ;;
5191     mingw32*|mingw64*)
5192         target_os=mingw32
5193         LIBTARGET=i386
5194         if enabled x86_64; then
5195             LIBTARGET="i386:x86-64"
5196         elif enabled arm; then
5197             LIBTARGET="arm"
5198         elif enabled aarch64; then
5199             LIBTARGET="arm64"
5200         fi
5201         if enabled shared; then
5202             # Cannot build both shared and static libs when using dllimport.
5203             disable static
5204         fi
5205         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5206         enabled x86_32 && check_ldflags -Wl,--large-address-aware
5207         shlibdir_default="$bindir_default"
5208         SLIBPREF=""
5209         SLIBSUF=".dll"
5210         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5211         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5212         if test_cmd lib.exe -list; then
5213             SLIB_EXTRA_CMD=-'lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5214             if enabled x86_64; then
5215                 LIBTARGET=x64
5216             fi
5217         else
5218             SLIB_EXTRA_CMD=-'$(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
5219         fi
5220         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5221         SLIB_INSTALL_LINKS=
5222         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5223         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5224         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5225         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--disable-auto-image-base $$(@:$(SLIBSUF)=.def)'
5226         enabled x86_64 && objformat="win64" || objformat="win32"
5227         dlltool="${cross_prefix}dlltool"
5228         ranlib=:
5229         enable dos_paths
5230         check_ldflags -Wl,--nxcompat,--dynamicbase
5231         # Lets work around some stupidity in binutils.
5232         # ld will strip relocations from executables even though we need them
5233         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
5234         # however ld then forgets what the entry point should be (oops) so we
5235         # have to manually (re)set it.
5236         if enabled x86_32; then
5237             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
5238         elif enabled x86_64; then
5239             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
5240             check_ldflags -Wl,--high-entropy-va # binutils 2.25
5241             # Set image base >4GB for extra entropy with HEASLR
5242             add_ldexeflags -Wl,--image-base,0x140000000
5243             append SHFLAGS -Wl,--image-base,0x180000000
5244         fi
5245         ;;
5246     win32|win64)
5247         disable symver
5248         if enabled shared; then
5249             # Link to the import library instead of the normal static library
5250             # for shared libs.
5251             LD_LIB='%.lib'
5252             # Cannot build both shared and static libs with MSVC or icl.
5253             disable static
5254         fi
5255         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
5256         shlibdir_default="$bindir_default"
5257         SLIBPREF=""
5258         SLIBSUF=".dll"
5259         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5260         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5261         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5262         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5263         SLIB_INSTALL_LINKS=
5264         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5265         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5266         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5267         enabled x86_64 && objformat="win64" || objformat="win32"
5268         ranlib=:
5269         enable dos_paths
5270         ;;
5271     cygwin*)
5272         target_os=cygwin
5273         shlibdir_default="$bindir_default"
5274         SLIBPREF="cyg"
5275         SLIBSUF=".dll"
5276         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5277         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5278         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5279         SLIB_INSTALL_LINKS=
5280         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5281         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5282         enabled x86_64 && objformat="win64" || objformat="win32"
5283         enable dos_paths
5284         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5285         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5286         ;;
5287     *-dos|freedos|opendos)
5288         network_extralibs="-lsocket"
5289         objformat="coff"
5290         enable dos_paths
5291         add_cppflags -U__STRICT_ANSI__
5292         ;;
5293     linux)
5294         enable section_data_rel_ro
5295         enabled_any arm aarch64 && enable_weak linux_perf
5296         ;;
5297     irix*)
5298         target_os=irix
5299         ranlib="echo ignoring ranlib"
5300         ;;
5301     os/2*)
5302         strip="lxlite -CS"
5303         striptype=""
5304         objformat="aout"
5305         add_cppflags -D_GNU_SOURCE
5306         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5307         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5308         LIBSUF="_s.a"
5309         SLIBPREF=""
5310         SLIBSUF=".dll"
5311         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5312         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5313         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5314             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5315             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5316             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5317             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5318         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5319             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5320         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5321         SLIB_INSTALL_LINKS=
5322         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5323         enable dos_paths
5324         enable_weak os2threads
5325         ;;
5326     gnu/kfreebsd)
5327         add_cppflags -D_BSD_SOURCE
5328         ;;
5329     gnu)
5330         ;;
5331     qnx)
5332         add_cppflags -D_QNX_SOURCE
5333         network_extralibs="-lsocket"
5334         ;;
5335     symbian)
5336         SLIBSUF=".dll"
5337         enable dos_paths
5338         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5339         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5340         add_ldflags -Wl,--target1-abs,--no-undefined \
5341                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5342                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5343         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5344                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5345                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5346         ;;
5347     minix)
5348         ;;
5349     none)
5350         ;;
5351     *)
5352         die "Unknown OS '$target_os'."
5353         ;;
5354 esac
5355
5356 # test if creating links works
5357 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5358 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5359 mkdir "$link_dest"
5360 $ln_s "$link_dest" "$link_name"
5361 touch "$link_dest/test_file"
5362 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5363     # create link to source path
5364     [ -e src ] && rm src
5365     $ln_s "$source_path" src
5366     source_link=src
5367 else
5368     # creating directory links doesn't work
5369     # fall back to using the full source path
5370     source_link="$source_path"
5371 fi
5372 # cleanup
5373 rm -r "$link_dest"
5374 rm -r "$link_name"
5375
5376 # determine libc flavour
5377
5378 probe_libc(){
5379     pfx=$1
5380     pfx_no_=${pfx%_}
5381     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5382     if test_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5383         eval ${pfx}libc_type=uclibc
5384         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5385     elif test_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5386         eval ${pfx}libc_type=glibc
5387         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5388     # MinGW headers can be installed on Cygwin, so check for newlib first.
5389     elif test_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5390         eval ${pfx}libc_type=newlib
5391         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5392     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5393     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5394         eval ${pfx}libc_type=mingw64
5395         if test_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5396             add_compat msvcrt/snprintf.o
5397             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5398         fi
5399         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5400         eval test \$${pfx_no_}cc_type = "gcc" &&
5401             add_${pfx}cppflags -D__printf__=__gnu_printf__
5402         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5403             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5404     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5405          test_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5406         eval ${pfx}libc_type=mingw32
5407         test_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5408             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5409             die "ERROR: MinGW32 runtime version must be >= 3.15."
5410         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5411         test_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5412             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5413         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5414             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5415         eval test \$${pfx_no_}cc_type = "gcc" &&
5416             add_${pfx}cppflags -D__printf__=__gnu_printf__
5417     elif test_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5418         eval ${pfx}libc_type=msvcrt
5419         if test_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5420             if [ "$pfx" = host_ ]; then
5421                 add_host_cppflags -Dsnprintf=_snprintf
5422             else
5423                 add_compat strtod.o strtod=avpriv_strtod
5424                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5425                                              _snprintf=avpriv_snprintf  \
5426                                              vsnprintf=avpriv_vsnprintf
5427             fi
5428         fi
5429         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5430         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5431         # 0x601 by default unless something else is set by the user.
5432         # This can easily lead to us detecting functions only present
5433         # in such new versions and producing binaries requiring windows 7.0.
5434         # Therefore explicitly set the default to Vista unless the user has
5435         # set something else on the command line.
5436         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5437         # family. For these cases, configure is free to use any functions
5438         # found in the SDK headers by default. (Alternatively, we could force
5439         # _WIN32_WINNT to 0x0602 in that case.)
5440         test_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5441             { test_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0600; }
5442 #ifdef WINAPI_FAMILY
5443 #include <winapifamily.h>
5444 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5445 #error not desktop
5446 #endif
5447 #endif
5448 EOF
5449         if [ "$pfx" = "" ]; then
5450             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5451             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5452         fi
5453     elif test_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5454         eval ${pfx}libc_type=klibc
5455     elif test_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5456         eval ${pfx}libc_type=bionic
5457     elif test_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5458         eval ${pfx}libc_type=solaris
5459         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5460     fi
5461     test_${pfx}cc <<EOF
5462 #include <time.h>
5463 void *v = localtime_r;
5464 EOF
5465 test "$?" != 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
5466 #include <time.h>
5467 void *v = localtime_r;
5468 EOF
5469
5470     eval test -n "\${${pfx}libc_type}" && enable ${pfx}libc_${libc_type}
5471 }
5472
5473 probe_libc
5474 probe_libc host_
5475
5476 # hacks for compiler/libc/os combinations
5477
5478 case $libc_type in
5479     bionic)
5480         add_compat strtod.o strtod=avpriv_strtod
5481         ;;
5482 esac
5483
5484 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5485     add_cppflags '-I\$(SRC_PATH)/compat/float'
5486
5487 test_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5488
5489 set_default libdir
5490 : ${shlibdir_default:="$libdir"}
5491 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5492
5493 set_default $PATHS_LIST
5494 set_default nm
5495
5496 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5497
5498 enable_weak_pic() {
5499     disabled pic && return
5500     enable pic
5501     add_cppflags -DPIC
5502     case "$target_os" in
5503     mingw*|cygwin*|win*)
5504         ;;
5505     *)
5506         add_cflags -fPIC
5507         add_asflags -fPIC
5508         ;;
5509     esac
5510 }
5511
5512 enabled pic && enable_weak_pic
5513
5514 test_cc <<EOF || die "Symbol mangling check failed."
5515 int ff_extern;
5516 EOF
5517 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5518 extern_prefix=${sym%%ff_extern*}
5519
5520 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
5521
5522 for restrict_keyword in restrict __restrict__ __restrict ""; do
5523     test_code cc "" "char * $restrict_keyword p" && break
5524 done
5525
5526 check_cc pragma_deprecated "" '_Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"")'
5527
5528 # The global variable ensures the bits appear unchanged in the object file.
5529 test_cc <<EOF || die "endian test failed"
5530 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5531 EOF
5532 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5533
5534 check_cc const_nan math.h "struct { double d; } static const bar[] = { { NAN } }"
5535
5536 if ! enabled ppc64 || enabled bigendian; then
5537     disable vsx
5538 fi
5539
5540 check_gas() {
5541     log "check_gas using '$as' as AS"
5542     # :vararg is used on aarch64, arm and ppc altivec
5543     check_as vararg "
5544 .macro m n, y:vararg=0
5545 \n: .int \y
5546 .endm
5547 m x" || return 1
5548     # .altmacro is only used in arm asm
5549     ! enabled arm || check_as gnu_as ".altmacro"
5550 }
5551
5552 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5553     nogas=:
5554     enabled_any arm aarch64 && nogas=die
5555     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5556     as_noop=-v
5557
5558     case $as_type in
5559         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5560         gcc)  gaspp_as_type=gas ;;
5561         *)    gaspp_as_type=$as_type ;;
5562     esac
5563
5564     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5565
5566     test "${as#*gas-preprocessor.pl}" != "$as" ||
5567     test_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5568         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5569
5570     if ! check_gas ; then
5571         as=${gas:=$as}
5572         check_gas || \
5573             $nogas "GNU assembler not found, install/update gas-preprocessor"
5574     fi
5575
5576     check_as as_func ".func test
5577                       .endfunc"
5578 fi
5579
5580 check_inline_asm inline_asm_labels '"1:\n"'
5581
5582 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5583
5584 if enabled aarch64; then
5585     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5586     # internal assembler in clang 3.3 does not support this instruction
5587     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5588     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5589
5590     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5591
5592 elif enabled alpha; then
5593
5594     check_cflags -mieee
5595
5596 elif enabled arm; then
5597
5598     enabled msvc && check_cpp_condition thumb stddef.h "defined _M_ARMT"
5599     test_cpp_condition stddef.h "defined __thumb__" && test_cc <<EOF && enable_weak thumb
5600 float func(float a, float b){ return a+b; }
5601 EOF
5602     enabled thumb && check_cflags -mthumb || check_cflags -marm
5603
5604     if check_cpp_condition vfp_args stddef.h "defined __ARM_PCS_VFP"; then
5605         :
5606     elif check_cpp_condition vfp_args stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5607         :
5608     elif ! test_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5609         case "${cross_prefix:-$cc}" in
5610             *hardfloat*) enable vfp_args; fpabi=vfp ;;
5611             *) check_ld "cc" vfp_args <<EOF && fpabi=vfp || fpabi=soft ;;
5612 __asm__ (".eabi_attribute 28, 1");
5613 int main(void) { return 0; }
5614 EOF
5615         esac
5616         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5617     fi
5618
5619     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5620     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5621     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5622     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5623     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5624     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5625     enabled setend  && check_insn setend  'setend be'
5626
5627     [ $target_os = linux ] || [ $target_os = android ] ||
5628         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5629             $ARCH_EXT_LIST_ARM
5630
5631     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5632
5633     check_as as_arch_directive ".arch armv7-a"
5634     check_as as_dn_directive   "ra .dn d0.i16"
5635     check_as as_fpu_directive  ".fpu neon"
5636
5637     # llvm's integrated assembler supports .object_arch from llvm 3.5
5638     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5639         check_as as_object_arch ".object_arch armv4"
5640
5641     # MS armasm fails to assemble our PIC constructs
5642     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5643
5644 elif enabled mips; then
5645
5646     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5647     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5648     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5649
5650     # Enable minimum ISA based on selected options
5651     if enabled mips64; then
5652         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5653         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5654         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5655     else
5656         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5657         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5658         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5659         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5660     fi
5661
5662     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5663     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5664     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_headers msa.h || disable msa
5665     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5666     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5667
5668     if enabled bigendian && enabled msa; then
5669         disable msa
5670     fi
5671
5672 elif enabled parisc; then
5673
5674     if enabled gcc; then
5675         case $($cc -dumpversion) in
5676             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5677         esac
5678     fi
5679
5680 elif enabled ppc; then
5681
5682     enable local_aligned
5683
5684     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5685     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5686     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5687     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5688
5689     if enabled altivec; then
5690         check_cflags -maltivec -mabi=altivec
5691
5692         # check if our compiler supports Motorola AltiVec C API
5693         check_cc altivec altivec.h "vector signed int v1 = (vector signed int) { 0 };
5694                                     vector signed int v2 = (vector signed int) { 1 };
5695                                     v1 = vec_add(v1, v2);"
5696
5697         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5698     fi
5699
5700     if enabled vsx; then
5701         check_cflags -mvsx &&
5702         check_cc vsx altivec.h "int v[4] = { 0 };
5703                                 vector signed int v1 = vec_vsx_ld(0, v);"
5704     fi
5705
5706     if enabled power8; then
5707         check_cpp_condition power8 "altivec.h" "defined(_ARCH_PWR8)"
5708     fi
5709
5710 elif enabled x86; then
5711
5712     check_builtin rdtsc    intrin.h   "__rdtsc()"
5713     check_builtin mm_empty mmintrin.h "_mm_empty()"
5714
5715     enable local_aligned
5716
5717     # check whether EBP is available on x86
5718     # As 'i' is stored on the stack, this program will crash
5719     # if the base pointer is used to access it because the
5720     # base pointer is cleared in the inline assembly code.
5721     check_exec_crash <<EOF && enable ebp_available
5722 volatile int i=0;
5723 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5724 return i;
5725 EOF
5726
5727     # check whether EBX is available on x86
5728     check_inline_asm ebx_available '""::"b"(0)' &&
5729         check_inline_asm ebx_available '"":::"%ebx"'
5730
5731     # check whether xmm clobbers are supported
5732     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5733
5734     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5735         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5736
5737     # check whether binutils is new enough to compile SSSE3/MMXEXT
5738     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5739     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5740
5741     probe_x86asm(){
5742         x86asmexe_probe=$1
5743         if test_cmd $x86asmexe_probe -v; then
5744             x86asmexe=$x86asmexe_probe
5745             x86asm_type=nasm
5746             x86asm_debug="-g -F dwarf"
5747             X86ASMDEP=
5748             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5749         elif test_cmd $x86asmexe_probe --version; then
5750             x86asmexe=$x86asmexe_probe
5751             x86asm_type=yasm
5752             x86asm_debug="-g dwarf2"
5753             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
5754             X86ASM_DEPFLAGS=
5755         fi
5756         check_x86asm x86asm "movbe ecx, [5]"
5757     }
5758
5759     if ! disabled_any asm mmx x86asm; then
5760         disable x86asm
5761         for program in $x86asmexe nasm yasm; do
5762             probe_x86asm $program && break
5763         done
5764         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
5765         X86ASMFLAGS="-f $objformat"
5766         enabled pic               && append X86ASMFLAGS "-DPIC"
5767         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
5768         case "$objformat" in
5769             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
5770         esac
5771
5772         check_x86asm avx512_external "vmovdqa32 [eax]{k1}{z}, zmm0"
5773         check_x86asm avx2_external   "vextracti128 xmm0, ymm0, 0"
5774         check_x86asm xop_external    "vpmacsdd xmm0, xmm1, xmm2, xmm3"
5775         check_x86asm fma4_external   "vfmaddps ymm0, ymm1, ymm2, ymm3"
5776         check_x86asm cpunop          "CPU amdnop"
5777     fi
5778
5779     case "$cpu" in
5780         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5781             disable fast_clz
5782         ;;
5783     esac
5784
5785 fi
5786
5787 check_cc intrinsics_neon arm_neon.h "int16x8_t test = vdupq_n_s16(0)"
5788
5789 check_ldflags -Wl,--as-needed
5790 check_ldflags -Wl,-z,noexecstack
5791
5792 if ! disabled network; then
5793     check_func getaddrinfo $network_extralibs
5794     check_func inet_aton $network_extralibs
5795
5796     check_type netdb.h "struct addrinfo"
5797     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5798     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5799     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5800     check_type poll.h "struct pollfd"
5801     check_type netinet/sctp.h "struct sctp_event_subscribe"
5802     check_struct "sys/socket.h" "struct msghdr" msg_flags
5803     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5804     check_type netinet/in.h "struct sockaddr_in6"
5805     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5806     check_type "sys/types.h sys/socket.h" socklen_t
5807
5808     # Prefer arpa/inet.h over winsock2
5809     if check_headers arpa/inet.h ; then
5810         check_func closesocket
5811     elif check_headers winsock2.h ; then
5812         check_func_headers winsock2.h closesocket -lws2 &&
5813             network_extralibs="-lws2" ||
5814         { check_func_headers winsock2.h closesocket -lws2_32 &&
5815             network_extralibs="-lws2_32"; } || disable winsock2_h network
5816         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5817
5818         check_type ws2tcpip.h socklen_t
5819         check_type ws2tcpip.h "struct addrinfo"
5820         check_type ws2tcpip.h "struct group_source_req"
5821         check_type ws2tcpip.h "struct ip_mreq_source"
5822         check_type ws2tcpip.h "struct ipv6_mreq"
5823         check_type winsock2.h "struct pollfd"
5824         check_struct winsock2.h "struct sockaddr" sa_len
5825         check_type ws2tcpip.h "struct sockaddr_in6"
5826         check_type ws2tcpip.h "struct sockaddr_storage"
5827     else
5828         disable network
5829     fi
5830 fi
5831
5832 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5833 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5834 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5835 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5836 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5837 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5838 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5839
5840 case "$custom_allocator" in
5841     jemalloc)
5842         # jemalloc by default does not use a prefix
5843         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5844     ;;
5845     tcmalloc)
5846         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
5847         malloc_prefix=tc_
5848     ;;
5849 esac
5850
5851 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5852 check_func  ${malloc_prefix}memalign            && enable memalign
5853 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5854
5855 check_func  access
5856 check_func_headers stdlib.h arc4random
5857 check_lib   clock_gettime time.h clock_gettime || check_lib clock_gettime time.h clock_gettime -lrt
5858 check_func  fcntl
5859 check_func  fork
5860 check_func  gethrtime
5861 check_func  getopt
5862 check_func  getrusage
5863 check_func  gettimeofday
5864 check_func  isatty
5865 check_func  mkstemp
5866 check_func  mmap
5867 check_func  mprotect
5868 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5869 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
5870 check_func  sched_getaffinity
5871 check_func  setrlimit
5872 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5873 check_func  strerror_r
5874 check_func  sysconf
5875 check_func  sysctl
5876 check_func  usleep
5877
5878 check_func_headers conio.h kbhit
5879 check_func_headers io.h setmode
5880 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5881 check_func_headers mach/mach_time.h mach_absolute_time
5882 check_func_headers stdlib.h getenv
5883 check_func_headers sys/stat.h lstat
5884
5885 check_func_headers windows.h GetProcessAffinityMask
5886 check_func_headers windows.h GetProcessTimes
5887 check_func_headers windows.h GetSystemTimeAsFileTime
5888 check_func_headers windows.h LoadLibrary
5889 check_func_headers windows.h MapViewOfFile
5890 check_func_headers windows.h PeekNamedPipe
5891 check_func_headers windows.h SetConsoleTextAttribute
5892 check_func_headers windows.h SetConsoleCtrlHandler
5893 check_func_headers windows.h Sleep
5894 check_func_headers windows.h VirtualAlloc
5895 check_func_headers glob.h glob
5896 enabled xlib &&
5897     check_lib xlib "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5898
5899 check_headers direct.h
5900 check_headers dirent.h
5901 check_headers dxgidebug.h
5902 check_headers dxva.h
5903 check_headers dxva2api.h -D_WIN32_WINNT=0x0600
5904 check_headers io.h
5905 check_headers linux/perf_event.h
5906 check_headers libcrystalhd/libcrystalhd_if.h
5907 check_headers malloc.h
5908 check_headers net/udplite.h
5909 check_headers poll.h
5910 check_headers sys/param.h
5911 check_headers sys/resource.h
5912 check_headers sys/select.h
5913 check_headers sys/time.h
5914 check_headers sys/un.h
5915 check_headers termios.h
5916 check_headers unistd.h
5917 check_headers valgrind/valgrind.h
5918 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5919 check_headers windows.h
5920 check_headers X11/extensions/XvMClib.h
5921 check_headers asm/types.h
5922
5923 # it seems there are versions of clang in some distros that try to use the
5924 # gcc headers, which explodes for stdatomic
5925 # so we also check that atomics actually work here
5926 check_builtin stdatomic stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0); foo += bar"
5927
5928 check_lib advapi32 "windows.h"            RegCloseKey          -ladvapi32
5929 check_lib bcrypt   "windows.h bcrypt.h"   BCryptGenRandom      -lbcrypt &&
5930     check_cpp_condition bcrypt bcrypt.h "defined BCRYPT_RNG_ALGORITHM"
5931 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
5932 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
5933 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
5934
5935 check_lib android android/native_window.h ANativeWindow_acquire -landroid
5936 check_lib mediandk "stdint.h media/NdkImage.h" AImage_delete -lmediandk
5937 check_lib camera2ndk "stdbool.h stdint.h camera/NdkCameraManager.h" ACameraManager_create -lcamera2ndk
5938
5939 enabled appkit       && check_apple_framework AppKit
5940 enabled audiotoolbox && check_apple_framework AudioToolbox
5941 enabled avfoundation && check_apple_framework AVFoundation
5942 enabled coreimage    && check_apple_framework CoreImage
5943 enabled videotoolbox && check_apple_framework VideoToolbox
5944
5945 check_apple_framework CoreFoundation
5946 check_apple_framework CoreMedia
5947 check_apple_framework CoreVideo
5948
5949 enabled avfoundation && {
5950     disable coregraphics applicationservices
5951     check_lib coregraphics        CoreGraphics/CoreGraphics.h               CGGetActiveDisplayList "-framework CoreGraphics" ||
5952     check_lib applicationservices ApplicationServices/ApplicationServices.h CGGetActiveDisplayList "-framework ApplicationServices"; }
5953
5954 enabled videotoolbox && {
5955     check_lib coreservices CoreServices/CoreServices.h UTGetOSTypeFromString "-framework CoreServices"
5956     check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_HEVC "-framework CoreMedia"
5957 }
5958
5959 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5960
5961 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5962 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5963 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5964 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5965 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5966
5967 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
5968 check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
5969 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5970 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5971 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
5972 check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
5973
5974 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5975
5976 if ! disabled ffnvcodec; then
5977     check_pkg_config ffnvcodec "ffnvcodec >= 8.1.24.2" \
5978           "ffnvcodec/nvEncodeAPI.h ffnvcodec/dynlink_cuda.h ffnvcodec/dynlink_cuviddec.h ffnvcodec/dynlink_nvcuvid.h" "" || \
5979       check_pkg_config ffnvcodec "ffnvcodec >= 8.0.14.2 ffnvcodec < 8.1" \
5980           "ffnvcodec/nvEncodeAPI.h ffnvcodec/dynlink_cuda.h ffnvcodec/dynlink_cuviddec.h ffnvcodec/dynlink_nvcuvid.h" ""
5981 fi
5982
5983 check_cpp_condition winrt windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)"
5984
5985 if ! disabled w32threads && ! enabled pthreads; then
5986     check_func_headers "windows.h process.h" _beginthreadex &&
5987         check_type "windows.h" CONDITION_VARIABLE &&
5988         check_type "windows.h" INIT_ONCE &&
5989         enable w32threads || disable w32threads
5990     if ! enabled w32threads && enabled winrt; then
5991         check_func_headers "windows.h" CreateThread &&
5992             enable w32threads || disable w32threads
5993     fi
5994 fi
5995
5996 # check for some common methods of building with pthread support
5997 # do this before the optional library checks as some of them require pthreads
5998 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5999     if check_lib pthreads pthread.h pthread_join   -pthread &&
6000        check_lib pthreads pthread.h pthread_create -pthread; then
6001         add_cflags -pthread
6002     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
6003          check_lib pthreads pthread.h pthread_create -pthreads; then
6004         add_cflags -pthreads
6005     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
6006          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
6007         add_cflags -ldl -pthread
6008     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
6009          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
6010         :
6011     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
6012          check_lib pthreads pthread.h pthread_create -lpthread; then
6013         :
6014     elif check_func pthread_join && check_func pthread_create; then
6015         enable pthreads
6016     fi
6017     check_cc pthreads "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER"
6018
6019     if enabled pthreads; then
6020         check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
6021         check_func pthread_cancel $pthreads_extralibs
6022     fi
6023 fi
6024
6025 enabled  zlib && { check_pkg_config zlib zlib "zlib.h" zlibVersion ||
6026                    check_lib zlib   zlib.h      zlibVersion    -lz; }
6027 enabled bzlib && check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
6028 enabled  lzma && check_lib lzma   lzma.h lzma_version_number -llzma
6029
6030 # On some systems dynamic loading requires no extra linker flags
6031 check_lib libdl dlfcn.h "dlopen dlsym" || check_lib libdl dlfcn.h "dlopen dlsym" -ldl
6032
6033 check_lib libm math.h sin -lm
6034
6035 atan2f_args=2
6036 copysign_args=2
6037 hypot_args=2
6038 ldexpf_args=2
6039 powf_args=2
6040
6041 for func in $MATH_FUNCS; do
6042     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
6043 done
6044
6045 for func in $COMPLEX_FUNCS; do
6046     eval check_complexfunc $func \${${func}_args:-1}
6047 done
6048
6049 # these are off by default, so fail if requested and not available
6050 enabled cuda_sdk          && require cuda_sdk cuda.h cuCtxCreate -lcuda
6051 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
6052 enabled decklink          && { require_headers DeckLinkAPI.h &&
6053                                { test_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a090500" || die "ERROR: Decklink API version must be >= 10.9.5."; } }
6054 enabled libndi_newtek     && require_headers Processing.NDI.Lib.h
6055 enabled frei0r            && require_headers frei0r.h
6056 enabled gmp               && require gmp gmp.h mpz_export -lgmp
6057 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
6058 enabled jni               && { [ $target_os = "android" ] && check_headers jni.h && enabled pthreads || die "ERROR: jni not found"; }
6059 enabled ladspa            && require_headers ladspa.h
6060 enabled libaom            && require_pkg_config libaom "aom >= 1.0.0" aom/aom_codec.h aom_codec_version
6061 enabled lv2               && require_pkg_config lv2 lilv-0 "lilv/lilv.h" lilv_world_new
6062 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
6063 enabled libass            && require_pkg_config libass libass ass/ass.h ass_library_init
6064 enabled libbluray         && require_pkg_config libbluray libbluray libbluray/bluray.h bd_open
6065 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
6066 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
6067                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
6068                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
6069 enabled libcaca           && require_pkg_config libcaca caca caca.h caca_create_canvas
6070 enabled libcodec2         && require libcodec2 codec2/codec2.h codec2_create -lcodec2
6071 enabled libdavs2          && require_pkg_config libdavs2 "davs2 >= 1.5.115" davs2.h davs2_decoder_open
6072 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
6073 enabled libdrm            && require_pkg_config libdrm libdrm xf86drm.h drmGetVersion
6074 enabled libfdk_aac        && { check_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
6075                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
6076                                  warn "using libfdk without pkg-config"; } }
6077 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"
6078 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
6079 enabled fontconfig        && enable libfontconfig
6080 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
6081 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
6082 enabled libfribidi        && require_pkg_config libfribidi fribidi fribidi.h fribidi_version_info
6083 enabled libgme            && { check_pkg_config libgme libgme gme/gme.h gme_new_emu ||
6084                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }
6085 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
6086                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
6087                                done || die "ERROR: libgsm not found"; }
6088 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc $pthreads_extralibs
6089 enabled libklvanc         && require libklvanc libklvanc/vanc.h klvanc_context_create -lklvanc
6090 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
6091 enabled liblensfun        && require_pkg_config liblensfun lensfun lensfun.h lf_db_new
6092 # While it may appear that require is being used as a pkg-config
6093 # fallback for libmfx, it is actually being used to detect a different
6094 # installation route altogether.  If libmfx is installed via the Intel
6095 # Media SDK or Intel Media Server Studio, these don't come with
6096 # pkg-config support.  Instead, users should make sure that the build
6097 # can find the libraries and headers through other means.
6098 enabled libmfx            && { check_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit ||
6099                                { require libmfx "mfx/mfxvideo.h" MFXInit "-llibmfx $advapi32_extralibs" && warn "using libmfx without pkg-config"; } }
6100 enabled libmodplug        && require_pkg_config libmodplug libmodplug libmodplug/modplug.h ModPlug_Load
6101 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame $libm_extralibs
6102 enabled libmysofa         && { check_pkg_config libmysofa libmysofa mysofa.h mysofa_load ||
6103                                require libmysofa mysofa.h mysofa_load -lmysofa $zlib_extralibs; }
6104 enabled libnpp            && { check_lib libnpp npp.h nppGetLibVersion -lnppig -lnppicc -lnppc -lnppidei ||
6105                                check_lib libnpp npp.h nppGetLibVersion -lnppi -lnppc -lnppidei ||
6106                                die "ERROR: libnpp not found"; }
6107 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
6108 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
6109 enabled libopencv         && { check_headers opencv2/core/core_c.h &&
6110                                { check_pkg_config libopencv opencv opencv2/core/core_c.h cvCreateImageHeader ||
6111                                  require libopencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
6112                                require_pkg_config libopencv opencv opencv/cxcore.h cvCreateImageHeader; }
6113 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
6114 enabled libopenjpeg       && { check_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version ||
6115                                { require_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } }
6116 enabled libopenmpt        && require_pkg_config libopenmpt "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create -lstdc++ && append libopenmpt_extralibs "-lstdc++"
6117 enabled libopus           && {
6118     enabled libopus_decoder && {
6119         require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
6120     }
6121     enabled libopus_encoder && {
6122         require_pkg_config libopus opus opus_multistream.h opus_multistream_surround_encoder_create
6123     }
6124 }
6125 enabled libpulse          && require_pkg_config libpulse libpulse pulse/pulseaudio.h pa_context_new
6126 enabled librsvg           && require_pkg_config librsvg librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
6127 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
6128 enabled librubberband     && require_pkg_config librubberband "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new -lstdc++ && append librubberband_extralibs "-lstdc++"
6129 enabled libshine          && require_pkg_config libshine shine shine/layer3.h shine_encode_buffer
6130 enabled libsmbclient      && { check_pkg_config libsmbclient smbclient libsmbclient.h smbc_init ||
6131                                require libsmbclient libsmbclient.h smbc_init -lsmbclient; }
6132 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy -lstdc++
6133 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
6134 enabled libssh            && require_pkg_config libssh libssh libssh/sftp.h sftp_init
6135 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init
6136 enabled libsrt            && require_pkg_config libsrt "srt >= 1.3.0" srt/srt.h srt_socket
6137 enabled libtensorflow     && require libtensorflow tensorflow/c/c_api.h TF_Version -ltensorflow
6138 enabled libtesseract      && require_pkg_config libtesseract tesseract tesseract/capi.h TessBaseAPICreate
6139 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
6140 enabled libtls            && require_pkg_config libtls libtls tls.h tls_configure
6141 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
6142                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
6143                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
6144 enabled libv4l2           && require_pkg_config libv4l2 libv4l2 libv4l2.h v4l2_ioctl
6145 enabled libvidstab        && require_pkg_config libvidstab "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
6146 enabled libvmaf           && require_pkg_config libvmaf "libvmaf >= 1.3.9" libvmaf.h compute_vmaf
6147 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
6148 enabled libvorbis         && require_pkg_config libvorbis vorbis vorbis/codec.h vorbis_info_init &&
6149                              require_pkg_config libvorbisenc vorbisenc vorbis/vorbisenc.h vorbis_encode_init
6150
6151 enabled libvpx            && {
6152     enabled libvpx_vp8_decoder && {
6153         check_pkg_config libvpx_vp8_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
6154             check_lib libvpx_vp8_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_dec_init_ver VPX_IMG_FMT_HIGHBITDEPTH" -lvpx ||
6155                 die "ERROR: libvpx decoder version must be >=1.4.0";
6156     }
6157     enabled libvpx_vp8_encoder && {
6158         check_pkg_config libvpx_vp8_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
6159             check_lib libvpx_vp8_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VPX_IMG_FMT_HIGHBITDEPTH" -lvpx ||
6160                 die "ERROR: libvpx encoder version must be >=1.4.0";
6161     }
6162     enabled libvpx_vp9_decoder && {
6163         check_pkg_config libvpx_vp9_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
6164             check_lib libvpx_vp9_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx VPX_IMG_FMT_HIGHBITDEPTH" "-lvpx $libm_extralibs"
6165     }
6166     enabled libvpx_vp9_encoder && {
6167         check_pkg_config libvpx_vp9_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
6168             check_lib libvpx_vp9_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VPX_IMG_FMT_HIGHBITDEPTH" "-lvpx $libm_extralibs"
6169     }
6170     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
6171         die "libvpx enabled but no supported decoders found"
6172     fi
6173 }
6174
6175 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
6176 enabled libwebp           && {
6177     enabled libwebp_encoder      && require_pkg_config libwebp "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
6178     enabled libwebp_anim_encoder && check_pkg_config libwebp_anim_encoder "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit; }
6179 enabled libx264           && { check_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode ||
6180                                { require libx264 "stdint.h x264.h" x264_encoder_encode "-lx264 $pthreads_extralibs $libm_extralibs" &&
6181                                  warn "using libx264 without pkg-config"; } } &&
6182                              require_cpp_condition libx264 x264.h "X264_BUILD >= 118" &&
6183                              check_cpp_condition libx262 x264.h "X264_MPEG2"
6184 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
6185                              require_cpp_condition libx265 x265.h "X265_BUILD >= 68"
6186 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode "-lxavs $pthreads_extralibs $libm_extralibs"
6187 enabled libxavs2          && require_pkg_config libxavs2 "xavs2 >= 1.2.77" "stdint.h xavs2.h" xavs2_api_get
6188 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
6189 enabled libzimg           && require_pkg_config libzimg "zimg >= 2.7.0" zimg.h zimg_get_api_version
6190 enabled libzmq            && require_pkg_config libzmq libzmq zmq.h zmq_ctx_new
6191 enabled libzvbi           && require_pkg_config libzvbi zvbi-0.2 libzvbi.h vbi_decoder_new &&
6192                              { test_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
6193                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
6194 enabled libxml2           && require_pkg_config libxml2 libxml-2.0 libxml2/libxml/xmlversion.h xmlCheckVersion
6195 enabled mbedtls           && { check_pkg_config mbedtls mbedtls mbedtls/x509_crt.h mbedtls_x509_crt_init ||
6196                                check_pkg_config mbedtls mbedtls mbedtls/ssl.h mbedtls_ssl_init ||
6197                                check_lib mbedtls mbedtls/ssl.h mbedtls_ssl_init -lmbedtls -lmbedx509 -lmbedcrypto ||
6198                                die "ERROR: mbedTLS not found"; }
6199 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
6200 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
6201                                { ! enabled cross_compile &&
6202                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
6203                                  add_ldflags -L/opt/vc/lib/ &&
6204                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
6205                                die "ERROR: mmal not found" &&
6206                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
6207 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
6208                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
6209                                die "ERROR: openal not found"; } &&
6210                              { test_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
6211                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
6212 enabled opencl            && { check_pkg_config opencl OpenCL CL/cl.h clEnqueueNDRangeKernel ||
6213                                check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
6214                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
6215                                die "ERROR: opencl not found"; } &&
6216                              { test_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
6217                                test_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
6218                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
6219 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
6220                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
6221                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
6222                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
6223                                die "ERROR: opengl not found."
6224                              }
6225 enabled omx               && require_headers OMX_Core.h
6226 enabled omx_rpi           && { check_headers OMX_Core.h ||
6227                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_headers OMX_Core.h ; } ||
6228                                die "ERROR: OpenMAX IL headers not found"; } && enable omx
6229 enabled openssl           && { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
6230                                check_pkg_config openssl openssl openssl/ssl.h SSL_library_init ||
6231                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
6232                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
6233                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
6234                                die "ERROR: openssl not found"; }
6235 enabled rkmpp             && { require_pkg_config rkmpp rockchip_mpp  rockchip/rk_mpi.h mpp_create &&
6236                                require_pkg_config rockchip_mpp "rockchip_mpp >= 1.3.7" rockchip/rk_mpi.h mpp_create &&
6237                                { enabled libdrm ||
6238                                  die "ERROR: rkmpp requires --enable-libdrm"; }
6239                              }
6240 enabled vapoursynth       && require_pkg_config vapoursynth "vapoursynth-script >= 42" VSScript.h vsscript_init
6241
6242
6243 if enabled gcrypt; then
6244     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
6245     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
6246         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
6247         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
6248         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
6249             die "ERROR: gcrypt not found"
6250         add_cflags $gcrypt_cflags
6251     else
6252         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
6253     fi
6254 fi
6255
6256 if enabled sdl2; then
6257     SDL2_CONFIG="${cross_prefix}sdl2-config"
6258     test_pkg_config sdl2 "sdl2 >= 2.0.1 sdl2 < 2.1.0" SDL_events.h SDL_PollEvent
6259     if disabled sdl2 && "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6260         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6261         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6262         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6263         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6264         check_func_headers SDL_events.h SDL_PollEvent $sdl2_extralibs $sdl2_cflags &&
6265             enable sdl2
6266     fi
6267     if test $target_os = "mingw32"; then
6268         sdl2_extralibs=$(filter_out '-mwindows' $sdl2_extralibs)
6269     fi
6270 fi
6271
6272 if enabled decklink; then
6273     case $target_os in
6274         mingw32*|mingw64*|win32|win64)
6275             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6276             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6277             ;;
6278     esac
6279 fi
6280
6281 enabled securetransport &&
6282     check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6283     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" ||
6284         disable securetransport
6285
6286 enabled securetransport &&
6287     check_func SecItemImport "-Wl,-framework,CoreFoundation -Wl,-framework,Security"
6288
6289 enabled schannel &&
6290     check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6291     test_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" &&
6292     schannel_extralibs="-lsecur32" ||
6293         disable schannel
6294
6295 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6296 enabled makeinfo \
6297     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6298     && enable makeinfo_html || disable makeinfo_html
6299 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6300 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6301 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6302 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6303
6304 # check V4L2 codecs available in the API
6305 check_headers linux/fb.h
6306 check_headers linux/videodev2.h
6307 test_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6308 check_cc v4l2_m2m linux/videodev2.h "int i = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_VIDEO_M2M | V4L2_BUF_FLAG_LAST;"
6309 check_cc vc1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VC1_ANNEX_G;"
6310 check_cc mpeg1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG1;"
6311 check_cc mpeg2_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG2;"
6312 check_cc mpeg4_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG4;"
6313 check_cc hevc_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_HEVC;"
6314 check_cc h263_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H263;"
6315 check_cc h264_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H264;"
6316 check_cc vp8_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP8;"
6317 check_cc vp9_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP9;"
6318
6319 check_headers sys/videoio.h
6320 test_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6321
6322 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6323 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6324 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6325 # w32api 3.12 had it defined wrong
6326 check_cpp_condition vfwcap_defines vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER"
6327
6328 check_type "dshow.h" IBaseFilter
6329
6330 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6331 check_headers "dev/bktr/ioctl_meteor.h dev/bktr/ioctl_bt848.h"                   ||
6332     check_headers "machine/ioctl_meteor.h machine/ioctl_bt848.h"                 ||
6333     check_headers "dev/video/meteor/ioctl_meteor.h dev/video/bktr/ioctl_bt848.h" ||
6334     check_headers "dev/ic/bt8xx.h"
6335
6336 if check_struct sys/soundcard.h audio_buf_info bytes; then
6337     enable_sanitized sys/soundcard.h
6338 else
6339     test_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_sanitized sys/soundcard.h
6340     #include <sys/soundcard.h>
6341     audio_buf_info abc;
6342 EOF
6343 fi
6344
6345 enabled alsa && check_pkg_config alsa alsa "alsa/asoundlib.h" snd_pcm_htimestamp ||
6346     check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
6347
6348 enabled libjack &&
6349     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
6350
6351 enabled sndio && check_lib sndio sndio.h sio_open -lsndio
6352
6353 if enabled libcdio; then
6354     check_pkg_config libcdio libcdio_paranoia "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open ||
6355     check_pkg_config libcdio libcdio_paranoia "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open ||
6356     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6357     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6358     die "ERROR: No usable libcdio/cdparanoia found"
6359 fi
6360
6361 enabled libxcb && check_pkg_config libxcb "xcb >= 1.4" xcb/xcb.h xcb_connect ||
6362     disable libxcb_shm libxcb_shape libxcb_xfixes
6363
6364 if enabled libxcb; then
6365     enabled libxcb_shm    && check_pkg_config libxcb_shm    xcb-shm    xcb/shm.h    xcb_shm_attach
6366     enabled libxcb_shape  && check_pkg_config libxcb_shape  xcb-shape  xcb/shape.h  xcb_shape_get_rectangles
6367     enabled libxcb_xfixes && check_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
6368 fi
6369
6370 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6371
6372 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6373 # the desktop api partition
6374 test_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
6375 #ifdef WINAPI_FAMILY
6376 #include <winapifamily.h>
6377 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
6378 #error desktop, not uwp
6379 #else
6380 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
6381 #endif
6382 #else
6383 #error no family set
6384 #endif
6385 EOF
6386
6387 enabled vaapi &&
6388     check_pkg_config vaapi "libva >= 0.35.0" "va/va.h" vaInitialize
6389
6390 if enabled vaapi; then
6391     check_pkg_config vaapi_drm "libva-drm" "va/va_drm.h" vaGetDisplayDRM
6392
6393     if enabled xlib; then
6394         check_pkg_config vaapi_x11 "libva-x11" "va/va_x11.h" vaGetDisplay
6395     fi
6396
6397     check_cpp_condition vaapi_1 "va/va.h" "VA_CHECK_VERSION(1, 0, 0)"
6398 fi
6399
6400 if enabled_all opencl libdrm ; then
6401     check_type "CL/cl_intel.h" "clCreateImageFromFdINTEL_fn" &&
6402         enable opencl_drm_beignet
6403     check_func_headers "CL/cl_ext.h" clImportMemoryARM &&
6404         enable opencl_drm_arm
6405 fi
6406
6407 if enabled_all opencl vaapi ; then
6408     enabled opencl_drm_beignet && enable opencl_vaapi_beignet
6409     check_type "CL/cl.h CL/va_ext.h" "clCreateFromVA_APIMediaSurfaceINTEL_fn" &&
6410         enable opencl_vaapi_intel_media
6411 fi
6412
6413 if enabled_all opencl dxva2 ; then
6414     check_type "CL/cl_dx9_media_sharing.h" cl_dx9_surface_info_khr &&
6415         enable opencl_dxva2
6416 fi
6417
6418 if enabled_all opencl d3d11va ; then
6419     check_type "CL/cl_d3d11.h" clGetDeviceIDsFromD3D11KHR_fn &&
6420         enable opencl_d3d11
6421 fi
6422
6423 enabled vdpau &&
6424     check_cpp_condition vdpau vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP"
6425
6426 enabled vdpau &&
6427     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6428
6429 enabled crystalhd && check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
6430
6431 if enabled x86; then
6432     case $target_os in
6433         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6434             ;;
6435         *)
6436             disable ffnvcodec cuvid nvdec nvenc
6437             ;;
6438     esac
6439 else
6440     disable ffnvcodec cuvid nvdec nvenc
6441 fi
6442
6443 enabled ffnvcodec && enable cuda
6444
6445 enabled nvenc &&
6446     test_cc -I$source_path <<EOF || disable nvenc
6447 #include <ffnvcodec/nvEncodeAPI.h>
6448 NV_ENCODE_API_FUNCTION_LIST flist;
6449 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6450 int main(void) { return 0; }
6451 EOF
6452
6453 enabled amf &&
6454     check_cpp_condition amf "AMF/core/Version.h" \
6455         "(AMF_VERSION_MAJOR << 48 | AMF_VERSION_MINOR << 32 | AMF_VERSION_RELEASE << 16 | AMF_VERSION_BUILD_NUM) >= 0x0001000400040001"
6456
6457 # Funny iconv installations are not unusual, so check it after all flags have been set
6458 if enabled libc_iconv; then
6459     check_func_headers iconv.h iconv
6460 elif enabled iconv; then
6461     check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6462 fi
6463
6464 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6465
6466 # add some useful compiler flags if supported
6467 check_cflags -Wdeclaration-after-statement
6468 check_cflags -Wall
6469 check_cflags -Wdisabled-optimization
6470 check_cflags -Wpointer-arith
6471 check_cflags -Wredundant-decls
6472 check_cflags -Wwrite-strings
6473 check_cflags -Wtype-limits
6474 check_cflags -Wundef
6475 check_cflags -Wmissing-prototypes
6476 check_cflags -Wno-pointer-to-int-cast
6477 check_cflags -Wstrict-prototypes
6478 check_cflags -Wempty-body
6479
6480 if enabled extra_warnings; then
6481     check_cflags -Wcast-qual
6482     check_cflags -Wextra
6483     check_cflags -Wpedantic
6484 fi
6485
6486 check_disable_warning(){
6487     warning_flag=-W${1#-Wno-}
6488     test_cflags $unknown_warning_flags $warning_flag && add_cflags $1
6489 }
6490
6491 test_cflags -Werror=unused-command-line-argument &&
6492     append unknown_warning_flags "-Werror=unused-command-line-argument"
6493 test_cflags -Werror=unknown-warning-option &&
6494     append unknown_warning_flags "-Werror=unknown-warning-option"
6495
6496 check_disable_warning -Wno-parentheses
6497 check_disable_warning -Wno-switch
6498 check_disable_warning -Wno-format-zero-length
6499 check_disable_warning -Wno-pointer-sign
6500 check_disable_warning -Wno-unused-const-variable
6501 check_disable_warning -Wno-bool-operation
6502
6503 check_disable_warning_headers(){
6504     warning_flag=-W${1#-Wno-}
6505     test_cflags $warning_flag && add_cflags_headers $1
6506 }
6507
6508 check_disable_warning_headers -Wno-deprecated-declarations
6509 check_disable_warning_headers -Wno-unused-variable
6510
6511 test_cc <<EOF && enable blocks_extension
6512 void (^block)(void);
6513 EOF
6514
6515 # add some linker flags
6516 check_ldflags -Wl,--warn-common
6517 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6518 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir && add_ldsoflags -Wl,-rpath,$libdir
6519 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6520
6521 # add some strip flags
6522 check_stripflags -x
6523
6524 enabled neon_clobber_test &&
6525     check_ldflags -Wl,--wrap,avcodec_open2              \
6526                   -Wl,--wrap,avcodec_decode_audio4      \
6527                   -Wl,--wrap,avcodec_decode_video2      \
6528                   -Wl,--wrap,avcodec_decode_subtitle2   \
6529                   -Wl,--wrap,avcodec_encode_audio2      \
6530                   -Wl,--wrap,avcodec_encode_video2      \
6531                   -Wl,--wrap,avcodec_encode_subtitle    \
6532                   -Wl,--wrap,avcodec_send_packet        \
6533                   -Wl,--wrap,avcodec_receive_packet     \
6534                   -Wl,--wrap,avcodec_send_frame         \
6535                   -Wl,--wrap,avcodec_receive_frame      \
6536                   -Wl,--wrap,swr_convert                \
6537                   -Wl,--wrap,avresample_convert ||
6538     disable neon_clobber_test
6539
6540 enabled xmm_clobber_test &&
6541     check_ldflags -Wl,--wrap,avcodec_open2              \
6542                   -Wl,--wrap,avcodec_decode_audio4      \
6543                   -Wl,--wrap,avcodec_decode_video2      \
6544                   -Wl,--wrap,avcodec_decode_subtitle2   \
6545                   -Wl,--wrap,avcodec_encode_audio2      \
6546                   -Wl,--wrap,avcodec_encode_video2      \
6547                   -Wl,--wrap,avcodec_encode_subtitle    \
6548                   -Wl,--wrap,avcodec_send_packet        \
6549                   -Wl,--wrap,avcodec_receive_packet     \
6550                   -Wl,--wrap,avcodec_send_frame         \
6551                   -Wl,--wrap,avcodec_receive_frame      \
6552                   -Wl,--wrap,swr_convert                \
6553                   -Wl,--wrap,avresample_convert         \
6554                   -Wl,--wrap,sws_scale ||
6555     disable xmm_clobber_test
6556
6557 check_ld "cc" proper_dce <<EOF
6558 extern const int array[512];
6559 static inline int func(void) { return array[0]; }
6560 int main(void) { return 0; }
6561 EOF
6562
6563 if enabled proper_dce; then
6564     echo "X { local: *; };" > $TMPV
6565     if test_ldflags -Wl,${version_script},$TMPV; then
6566         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6567         quotes='""'
6568         test_cc <<EOF && enable symver_asm_label
6569 void ff_foo(void) __asm__ ("av_foo@VERSION");
6570 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6571 EOF
6572         test_cc <<EOF && enable symver_gnu_asm
6573 __asm__(".symver ff_foo,av_foo@VERSION");
6574 void ff_foo(void) {}
6575 EOF
6576     fi
6577 fi
6578
6579 if [ -z "$optflags" ]; then
6580     if enabled small; then
6581         optflags=$cflags_size
6582     elif enabled optimizations; then
6583         optflags=$cflags_speed
6584     else
6585         optflags=$cflags_noopt
6586     fi
6587 fi
6588
6589 if [ -z "$nvccflags" ]; then
6590     nvccflags=$nvccflags_default
6591 fi
6592
6593 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6594     nvccflags="$nvccflags -m64"
6595 else
6596     nvccflags="$nvccflags -m32"
6597 fi
6598
6599 check_optflags(){
6600     check_cflags "$@"
6601     enabled lto && check_ldflags "$@"
6602 }
6603
6604 check_optflags $optflags
6605 check_optflags -fno-math-errno
6606 check_optflags -fno-signed-zeros
6607
6608 if enabled lto; then
6609     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6610     check_cflags  -flto
6611     check_ldflags -flto $cpuflags
6612     disable inline_asm_direct_symbol_refs
6613 fi
6614
6615 enabled ftrapv && check_cflags -ftrapv
6616
6617 test_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6618 int x;
6619 EOF
6620
6621
6622 if enabled icc; then
6623     # Just warnings, no remarks
6624     check_cflags -w1
6625     # -wd: Disable following warnings
6626     # 144, 167, 556: -Wno-pointer-sign
6627     # 188: enumerated type mixed with another type
6628     # 1292: attribute "foo" ignored
6629     # 1419: external declaration in primary source file
6630     # 10006: ignoring unknown option -fno-signed-zeros
6631     # 10148: ignoring unknown option -Wno-parentheses
6632     # 10156: ignoring option '-W'; no argument required
6633     # 13200: No EMMS instruction before call to function
6634     # 13203: No EMMS instruction before return from function
6635     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6636     # 11030: Warning unknown option --as-needed
6637     # 10156: ignoring option '-export'; no argument required
6638     check_ldflags -wd10156,11030
6639     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6640     enable ebp_available
6641     # The test above does not test linking
6642     enabled lto && disable symver_asm_label
6643     if enabled x86_32; then
6644         icc_version=$($cc -dumpversion)
6645         test ${icc_version%%.*} -ge 11 &&
6646             check_cflags -falign-stack=maintain-16-byte ||
6647             disable aligned_stack
6648     fi
6649 elif enabled gcc; then
6650     check_optflags -fno-tree-vectorize
6651     check_cflags -Werror=format-security
6652     check_cflags -Werror=implicit-function-declaration
6653     check_cflags -Werror=missing-prototypes
6654     check_cflags -Werror=return-type
6655     check_cflags -Werror=vla
6656     check_cflags -Wformat
6657     check_cflags -fdiagnostics-color=auto
6658     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6659     if enabled x86_32; then
6660         case $target_os in
6661         *bsd*)
6662             # BSDs don't guarantee a 16 byte aligned stack, but we can
6663             # request GCC to try to maintain 16 byte alignment throughout
6664             # function calls. Library entry points that might call assembly
6665             # functions align the stack. (The parameter means 2^4 bytes.)
6666             check_cflags -mpreferred-stack-boundary=4
6667             ;;
6668         esac
6669     fi
6670 elif enabled llvm_gcc; then
6671     check_cflags -mllvm -stack-alignment=16
6672 elif enabled clang; then
6673     if enabled x86_32; then
6674         # Clang doesn't support maintaining alignment without assuming the
6675         # same alignment in every function. If 16 byte alignment would be
6676         # enabled, one would also have to either add attribute_align_arg on
6677         # every single entry point into the libraries or enable -mstackrealign
6678         # (doing stack realignment in every single function).
6679         case $target_os in
6680         mingw32|win32|*bsd*)
6681             disable aligned_stack
6682             ;;
6683         *)
6684             check_cflags -mllvm -stack-alignment=16
6685             check_cflags -mstack-alignment=16
6686             ;;
6687         esac
6688     else
6689         check_cflags -mllvm -stack-alignment=16
6690         check_cflags -mstack-alignment=16
6691     fi
6692     check_cflags -Qunused-arguments
6693     check_cflags -Werror=implicit-function-declaration
6694     check_cflags -Werror=missing-prototypes
6695     check_cflags -Werror=return-type
6696 elif enabled cparser; then
6697     add_cflags -Wno-missing-variable-declarations
6698     add_cflags -Wno-empty-statement
6699 elif enabled armcc; then
6700     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6701     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6702     # 2523: use of inline assembly is deprecated
6703     add_cflags -W${armcc_opt},--diag_suppress=2523
6704     add_cflags -W${armcc_opt},--diag_suppress=1207
6705     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6706     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6707     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6708     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6709 elif enabled pathscale; then
6710     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6711     disable inline_asm
6712 elif enabled_any msvc icl; then
6713     enabled x86_32 && disable aligned_stack
6714     enabled_all x86_32 debug && add_cflags -Oy-
6715     enabled debug && add_ldflags -debug
6716     enable pragma_deprecated
6717     if enabled icl; then
6718         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6719         # (correctly) on icl 13.x.
6720         test_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6721             add_cflags -Qansi-alias
6722         # Some inline asm is not compilable in debug
6723         if enabled debug; then
6724             disable ebp_available
6725             disable ebx_available
6726         fi
6727     fi
6728     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6729     check_cpp_condition log2 crtversion.h "_VC_CRT_MAJOR_VERSION >= 12"
6730     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6731     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6732     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6733     # MSVC 2013 and newer can handle it fine.
6734     # If this declspec fails, force including stdlib.h before the restrict redefinition
6735     # happens in config.h.
6736     if [ $restrict_keyword != restrict ]; then
6737         test_cc <<EOF || add_cflags -FIstdlib.h
6738 __declspec($restrict_keyword) void *foo(int);
6739 EOF
6740     fi
6741     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6742     # Issue has been fixed in MSVC v19.00.24218.
6743     test_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6744         check_cflags -d2SSAOptimizer-
6745     # enable utf-8 source processing on VS2015 U2 and newer
6746     test_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6747         add_cflags -utf-8
6748 fi
6749
6750 for pfx in "" host_; do
6751     varname=${pfx%_}cc_type
6752     eval "type=\$$varname"
6753     if [ "$type" = "msvc" ]; then
6754         test_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6755 static inline int foo(int a) { return a; }
6756 EOF
6757     fi
6758 done
6759
6760 case $as_type in
6761     clang)
6762         add_asflags -Qunused-arguments
6763     ;;
6764 esac
6765
6766 case $ld_type in
6767     clang)
6768         check_ldflags -Qunused-arguments
6769     ;;
6770 esac
6771
6772 enable frame_thread_encoder
6773
6774 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6775
6776 check_deps $CONFIG_LIST       \
6777            $CONFIG_EXTRA      \
6778            $HAVE_LIST         \
6779            $ALL_COMPONENTS    \
6780
6781 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"
6782 enabled avresample && warn "Building with deprecated library libavresample"
6783
6784 if test $target_os = "haiku"; then
6785     disable memalign
6786     disable posix_memalign
6787 fi
6788
6789 flatten_extralibs(){
6790     nested_entries=
6791     list_name=$1
6792     eval list=\$${1}
6793     for entry in $list; do
6794         entry_copy=$entry
6795         resolve entry_copy
6796         flat_entries=
6797         for e in $entry_copy; do
6798             case $e in
6799                 *_extralibs) nested_entries="$nested_entries$e ";;
6800                           *) flat_entries="$flat_entries$e ";;
6801             esac
6802         done
6803         eval $entry="\$flat_entries"
6804     done
6805     append $list_name "$nested_entries"
6806
6807     resolve nested_entries
6808     if test -n "$(filter '*_extralibs' $nested_entries)"; then
6809         flatten_extralibs $list_name
6810     fi
6811 }
6812
6813 flatten_extralibs_wrapper(){
6814     list_name=$1
6815     flatten_extralibs $list_name
6816     unique $list_name
6817     resolve $list_name
6818     eval $list_name=\$\(\$ldflags_filter \$$list_name\)
6819     eval printf \''%s'\' \""\$$list_name"\"
6820 }
6821
6822 for linkunit in $LIBRARY_LIST; do
6823     unset current_extralibs
6824     eval components=\$$(toupper ${linkunit})_COMPONENTS_LIST
6825     for comp in ${components}; do
6826         enabled $comp || continue
6827         comp_extralibs="${comp}_extralibs"
6828         append current_extralibs $comp_extralibs
6829     done
6830     eval prepend ${linkunit}_extralibs $current_extralibs
6831 done
6832
6833 for linkunit in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
6834     eval ${linkunit}_extralibs=\$\(flatten_extralibs_wrapper ${linkunit}_extralibs\)
6835 done
6836
6837 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6838
6839 for thread in $THREADS_LIST; do
6840     if enabled $thread; then
6841         test -n "$thread_type" &&
6842             die "ERROR: Only one thread type must be selected." ||
6843             thread_type="$thread"
6844     fi
6845 done
6846
6847 if disabled stdatomic; then
6848     if enabled atomics_gcc; then
6849         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6850     elif enabled atomics_win32; then
6851         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6852     elif enabled atomics_suncc; then
6853         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6854     elif enabled pthreads; then
6855         add_compat atomics/pthread/stdatomic.o
6856         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6857     else
6858         enabled threads && die "Threading is enabled, but no atomics are available"
6859         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6860     fi
6861 fi
6862
6863 # Check if requested libraries were found.
6864 for lib in $AUTODETECT_LIBS; do
6865     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6866 done
6867
6868 enabled zlib && add_cppflags -DZLIB_CONST
6869
6870 # conditional library dependencies, in any order
6871 enabled afftdn_filter       && prepend avfilter_deps "avcodec"
6872 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6873 enabled afir_filter         && prepend avfilter_deps "avcodec"
6874 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6875 enabled aresample_filter    && prepend avfilter_deps "swresample"
6876 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6877 enabled bm3d_filter         && prepend avfilter_deps "avcodec"
6878 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6879 enabled convolve_filter     && prepend avfilter_deps "avcodec"
6880 enabled deconvolve_filter   && prepend avfilter_deps "avcodec"
6881 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6882 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6883 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6884 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6885 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
6886 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6887 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6888 enabled pan_filter          && prepend avfilter_deps "swresample"
6889 enabled pp_filter           && prepend avfilter_deps "postproc"
6890 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6891 enabled resample_filter && prepend avfilter_deps "avresample"
6892 enabled sab_filter          && prepend avfilter_deps "swscale"
6893 enabled scale_filter    && prepend avfilter_deps "swscale"
6894 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6895 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6896 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6897 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6898 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6899 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
6900 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6901 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6902 enabled spp_filter          && prepend avfilter_deps "avcodec"
6903 enabled sr_filter           && prepend avfilter_deps "avformat swscale"
6904 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6905 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6906 enabled zoompan_filter      && prepend avfilter_deps "swscale"
6907
6908 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6909
6910 #FIXME
6911 enabled_any sdl2_outdev opengl_outdev && enabled sdl2 &&
6912     add_cflags $(filter_out '-Dmain=SDL_main' $sdl2_cflags)
6913
6914 enabled opus_decoder    && prepend avcodec_deps "swresample"
6915
6916 # reorder the items at var $1 to align with the items order at var $2 .
6917 # die if an item at $1 is not at $2 .
6918 reorder_by(){
6919     eval rb_in=\$$1
6920     eval rb_ordered=\$$2
6921
6922     for rb in $rb_in; do
6923         is_in $rb $rb_ordered || die "$rb at \$$1 is not at \$$2"
6924     done
6925
6926     rb_out=
6927     for rb in $rb_ordered; do
6928         is_in $rb $rb_in && rb_out="$rb_out$rb "
6929     done
6930     eval $1=\$rb_out
6931 }
6932
6933 # deps-expand fflib $1:  N x {append all expanded deps; unique}
6934 # within a set of N items, N expansions are enough to expose a cycle.
6935 expand_deps(){
6936     unique ${1}_deps  # required for the early break test.
6937     for dummy in $LIBRARY_LIST; do  # N iteratios
6938         eval deps=\$${1}_deps
6939         append ${1}_deps $(map 'eval echo \$${v}_deps' $deps)
6940         unique ${1}_deps
6941         eval '[ ${#deps} = ${#'${1}_deps'} ]' && break  # doesn't expand anymore
6942     done
6943
6944     eval is_in $1 \$${1}_deps && die "Dependency cycle at ${1}_deps"
6945     reorder_by ${1}_deps LIBRARY_LIST  # linking order is expected later
6946 }
6947
6948 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6949 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6950
6951 map 'expand_deps $v' $LIBRARY_LIST
6952
6953 if test "$quiet" != "yes"; then
6954
6955 echo "install prefix            $prefix"
6956 echo "source path               $source_path"
6957 echo "C compiler                $cc"
6958 echo "C library                 $libc_type"
6959 if test "$host_cc" != "$cc"; then
6960     echo "host C compiler           $host_cc"
6961     echo "host C library            $host_libc_type"
6962 fi
6963 echo "ARCH                      $arch ($cpu)"
6964 if test "$build_suffix" != ""; then
6965     echo "build suffix              $build_suffix"
6966 fi
6967 if test "$progs_suffix" != ""; then
6968     echo "progs suffix              $progs_suffix"
6969 fi
6970 if test "$extra_version" != ""; then
6971     echo "version string suffix     $extra_version"
6972 fi
6973 echo "big-endian                ${bigendian-no}"
6974 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6975 if enabled x86; then
6976     echo "standalone assembly       ${x86asm-no}"
6977     echo "x86 assembler             ${x86asmexe}"
6978     echo "MMX enabled               ${mmx-no}"
6979     echo "MMXEXT enabled            ${mmxext-no}"
6980     echo "3DNow! enabled            ${amd3dnow-no}"
6981     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6982     echo "SSE enabled               ${sse-no}"
6983     echo "SSSE3 enabled             ${ssse3-no}"
6984     echo "AESNI enabled             ${aesni-no}"
6985     echo "AVX enabled               ${avx-no}"
6986     echo "AVX2 enabled              ${avx2-no}"
6987     echo "AVX-512 enabled           ${avx512-no}"
6988     echo "XOP enabled               ${xop-no}"
6989     echo "FMA3 enabled              ${fma3-no}"
6990     echo "FMA4 enabled              ${fma4-no}"
6991     echo "i686 features enabled     ${i686-no}"
6992     echo "CMOV is fast              ${fast_cmov-no}"
6993     echo "EBX available             ${ebx_available-no}"
6994     echo "EBP available             ${ebp_available-no}"
6995 fi
6996 if enabled aarch64; then
6997     echo "NEON enabled              ${neon-no}"
6998     echo "VFP enabled               ${vfp-no}"
6999 fi
7000 if enabled arm; then
7001     echo "ARMv5TE enabled           ${armv5te-no}"
7002     echo "ARMv6 enabled             ${armv6-no}"
7003     echo "ARMv6T2 enabled           ${armv6t2-no}"
7004     echo "VFP enabled               ${vfp-no}"
7005     echo "NEON enabled              ${neon-no}"
7006     echo "THUMB enabled             ${thumb-no}"
7007 fi
7008 if enabled mips; then
7009     echo "MIPS FPU enabled          ${mipsfpu-no}"
7010     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
7011     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
7012     echo "MIPS MSA enabled          ${msa-no}"
7013     echo "LOONGSON MMI enabled      ${mmi-no}"
7014 fi
7015 if enabled ppc; then
7016     echo "AltiVec enabled           ${altivec-no}"
7017     echo "VSX enabled               ${vsx-no}"
7018     echo "POWER8 enabled            ${power8-no}"
7019     echo "PPC 4xx optimizations     ${ppc4xx-no}"
7020     echo "dcbzl available           ${dcbzl-no}"
7021 fi
7022 echo "debug symbols             ${debug-no}"
7023 echo "strip symbols             ${stripping-no}"
7024 echo "optimize for size         ${small-no}"
7025 echo "optimizations             ${optimizations-no}"
7026 echo "static                    ${static-no}"
7027 echo "shared                    ${shared-no}"
7028 echo "postprocessing support    ${postproc-no}"
7029 echo "network support           ${network-no}"
7030 echo "threading support         ${thread_type-no}"
7031 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
7032 echo "texi2html enabled         ${texi2html-no}"
7033 echo "perl enabled              ${perl-no}"
7034 echo "pod2man enabled           ${pod2man-no}"
7035 echo "makeinfo enabled          ${makeinfo-no}"
7036 echo "makeinfo supports HTML    ${makeinfo_html-no}"
7037 test -n "$random_seed" &&
7038     echo "random seed               ${random_seed}"
7039 echo
7040
7041 echo "External libraries:"
7042 print_enabled '' $EXTERNAL_LIBRARY_LIST $EXTERNAL_AUTODETECT_LIBRARY_LIST | print_in_columns
7043 echo
7044
7045 echo "External libraries providing hardware acceleration:"
7046 print_enabled '' $HWACCEL_LIBRARY_LIST $HWACCEL_AUTODETECT_LIBRARY_LIST | print_in_columns
7047 echo
7048
7049 echo "Libraries:"
7050 print_enabled '' $LIBRARY_LIST | print_in_columns
7051 echo
7052
7053 echo "Programs:"
7054 print_enabled '' $PROGRAM_LIST | print_in_columns
7055 echo
7056
7057 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
7058     echo "Enabled ${type}s:"
7059     eval list=\$$(toupper $type)_LIST
7060     print_enabled '_*' $list | print_in_columns
7061     echo
7062 done
7063
7064 if test -n "$ignore_tests"; then
7065     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
7066     echo "Ignored FATE tests:"
7067     echo $ignore_tests | print_in_columns
7068     echo
7069 fi
7070
7071 echo "License: $license"
7072
7073 fi # test "$quiet" != "yes"
7074
7075 if test -n "$WARNINGS"; then
7076     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
7077     enabled fatal_warnings && exit 1
7078 fi
7079
7080 test -e Makefile || echo "include $source_path/Makefile" > Makefile
7081
7082 esc(){
7083     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
7084 }
7085
7086 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
7087
7088 enabled stripping || strip="echo skipping strip"
7089 enabled stripping || striptype=""
7090
7091 config_files="$TMPH ffbuild/config.mak doc/config.texi"
7092
7093 cat > ffbuild/config.mak <<EOF
7094 # Automatically generated by configure - do not modify!
7095 ifndef FFMPEG_CONFIG_MAK
7096 FFMPEG_CONFIG_MAK=1
7097 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
7098 prefix=$prefix
7099 LIBDIR=\$(DESTDIR)$libdir
7100 SHLIBDIR=\$(DESTDIR)$shlibdir
7101 INCDIR=\$(DESTDIR)$incdir
7102 BINDIR=\$(DESTDIR)$bindir
7103 DATADIR=\$(DESTDIR)$datadir
7104 DOCDIR=\$(DESTDIR)$docdir
7105 MANDIR=\$(DESTDIR)$mandir
7106 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
7107 INSTALL_NAME_DIR=$install_name_dir
7108 SRC_PATH=$source_path
7109 SRC_LINK=$source_link
7110 ifndef MAIN_MAKEFILE
7111 SRC_PATH:=\$(SRC_PATH:.%=..%)
7112 endif
7113 CC_IDENT=$cc_ident
7114 ARCH=$arch
7115 INTRINSICS=$intrinsics
7116 EXTERN_PREFIX=$extern_prefix
7117 CC=$cc
7118 CXX=$cxx
7119 AS=$as
7120 OBJCC=$objcc
7121 LD=$ld
7122 DEPCC=$dep_cc
7123 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
7124 DEPAS=$as
7125 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
7126 X86ASM=$x86asmexe
7127 DEPX86ASM=$x86asmexe
7128 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
7129 AR=$ar
7130 ARFLAGS=$arflags
7131 AR_O=$ar_o
7132 AR_CMD=$ar
7133 NM_CMD=$nm
7134 RANLIB=$ranlib
7135 STRIP=$strip
7136 STRIPTYPE=$striptype
7137 NVCC=$nvcc
7138 CP=cp -p
7139 LN_S=$ln_s
7140 CPPFLAGS=$CPPFLAGS
7141 CFLAGS=$CFLAGS
7142 CXXFLAGS=$CXXFLAGS
7143 OBJCFLAGS=$OBJCFLAGS
7144 ASFLAGS=$ASFLAGS
7145 NVCCFLAGS=$nvccflags
7146 AS_C=$AS_C
7147 AS_O=$AS_O
7148 OBJCC_C=$OBJCC_C
7149 OBJCC_E=$OBJCC_E
7150 OBJCC_O=$OBJCC_O
7151 CC_C=$CC_C
7152 CC_E=$CC_E
7153 CC_O=$CC_O
7154 CXX_C=$CXX_C
7155 CXX_O=$CXX_O
7156 NVCC_C=$NVCC_C
7157 NVCC_O=$NVCC_O
7158 LD_O=$LD_O
7159 X86ASM_O=$X86ASM_O
7160 LD_LIB=$LD_LIB
7161 LD_PATH=$LD_PATH
7162 DLLTOOL=$dlltool
7163 WINDRES=$windres
7164 DEPWINDRES=$dep_cc
7165 DOXYGEN=$doxygen
7166 LDFLAGS=$LDFLAGS
7167 LDEXEFLAGS=$LDEXEFLAGS
7168 LDSOFLAGS=$LDSOFLAGS
7169 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
7170 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
7171 X86ASMFLAGS=$X86ASMFLAGS
7172 BUILDSUF=$build_suffix
7173 PROGSSUF=$progs_suffix
7174 FULLNAME=$FULLNAME
7175 LIBPREF=$LIBPREF
7176 LIBSUF=$LIBSUF
7177 LIBNAME=$LIBNAME
7178 SLIBPREF=$SLIBPREF
7179 SLIBSUF=$SLIBSUF
7180 EXESUF=$EXESUF
7181 EXTRA_VERSION=$extra_version
7182 CCDEP=$CCDEP
7183 CXXDEP=$CXXDEP
7184 CCDEP_FLAGS=$CCDEP_FLAGS
7185 ASDEP=$ASDEP
7186 ASDEP_FLAGS=$ASDEP_FLAGS
7187 X86ASMDEP=$X86ASMDEP
7188 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
7189 CC_DEPFLAGS=$CC_DEPFLAGS
7190 AS_DEPFLAGS=$AS_DEPFLAGS
7191 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
7192 HOSTCC=$host_cc
7193 HOSTLD=$host_ld
7194 HOSTCFLAGS=$host_cflags
7195 HOSTCPPFLAGS=$host_cppflags
7196 HOSTEXESUF=$HOSTEXESUF
7197 HOSTLDFLAGS=$host_ldflags
7198 HOSTEXTRALIBS=$host_extralibs
7199 DEPHOSTCC=$host_cc
7200 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
7201 HOSTCCDEP=$HOSTCCDEP
7202 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
7203 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
7204 HOSTCC_C=$HOSTCC_C
7205 HOSTCC_O=$HOSTCC_O
7206 HOSTLD_O=$HOSTLD_O
7207 TARGET_EXEC=$target_exec $target_exec_args
7208 TARGET_PATH=$target_path
7209 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
7210 CFLAGS-ffplay=${sdl2_cflags}
7211 CFLAGS_HEADERS=$CFLAGS_HEADERS
7212 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
7213 EXTRALIBS=$extralibs
7214 COMPAT_OBJS=$compat_objs
7215 INSTALL=$install
7216 LIBTARGET=${LIBTARGET}
7217 SLIBNAME=${SLIBNAME}
7218 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
7219 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
7220 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
7221 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
7222 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
7223 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
7224 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
7225 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
7226 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
7227 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
7228 NOREDZONE_FLAGS=$noredzone_flags
7229 LIBFUZZER_PATH=$libfuzzer_path
7230 IGNORE_TESTS=$ignore_tests
7231 EOF
7232
7233 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
7234
7235 for entry in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
7236     eval echo "EXTRALIBS-${entry}=\$${entry}_extralibs" >> ffbuild/config.mak
7237 done
7238
7239 cat > $TMPH <<EOF
7240 /* Automatically generated by configure - do not modify! */
7241 #ifndef FFMPEG_CONFIG_H
7242 #define FFMPEG_CONFIG_H
7243 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
7244 #define FFMPEG_LICENSE "$(c_escape $license)"
7245 #define CONFIG_THIS_YEAR 2018
7246 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
7247 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
7248 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
7249 #define av_restrict $restrict_keyword
7250 #define EXTERN_PREFIX "${extern_prefix}"
7251 #define EXTERN_ASM ${extern_prefix}
7252 #define BUILDSUF "$build_suffix"
7253 #define SLIBSUF "$SLIBSUF"
7254 #define HAVE_MMX2 HAVE_MMXEXT
7255 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
7256 EOF
7257
7258 test -n "$assert_level" &&
7259     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
7260
7261 test -n "$malloc_prefix" &&
7262     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
7263
7264 if enabled x86asm; then
7265     append config_files $TMPASM
7266     cat > $TMPASM <<EOF
7267 ; Automatically generated by configure - do not modify!
7268 EOF
7269 fi
7270
7271 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
7272
7273
7274 mkdir -p doc
7275 mkdir -p tests
7276 mkdir -p tests/api
7277 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
7278
7279 print_config ARCH_   "$config_files" $ARCH_LIST
7280 print_config HAVE_   "$config_files" $HAVE_LIST
7281 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
7282                                      $CONFIG_EXTRA      \
7283                                      $ALL_COMPONENTS    \
7284
7285 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
7286 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
7287
7288 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
7289 cp_if_changed $TMPH config.h
7290 touch ffbuild/.config
7291
7292 enabled x86asm && cp_if_changed $TMPASM config.asm
7293
7294 cat > $TMPH <<EOF
7295 /* Generated by ffmpeg configure */
7296 #ifndef AVUTIL_AVCONFIG_H
7297 #define AVUTIL_AVCONFIG_H
7298 EOF
7299
7300 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
7301
7302 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
7303
7304 cp_if_changed $TMPH libavutil/avconfig.h
7305
7306 # full_filter_name_foo=vf_foo
7307 # full_filter_name_bar=asrc_bar
7308 # ...
7309 eval "$(sed -n "s/^extern AVFilter ff_\([avfsinkrc]\{2,5\}\)_\(.*\);/full_filter_name_\2=\1_\2/p" $source_path/libavfilter/allfilters.c)"
7310
7311 # generate the lists of enabled components
7312 print_enabled_components(){
7313     file=$1
7314     struct_name=$2
7315     name=$3
7316     shift 3
7317     echo "static const $struct_name * const $name[] = {" > $TMPH
7318     for c in $*; do
7319         if enabled $c; then
7320             case $name in
7321                 filter_list)
7322                     eval c=\$full_filter_name_${c%_filter}
7323                 ;;
7324                 indev_list)
7325                     c=${c%_indev}_demuxer
7326                 ;;
7327                 outdev_list)
7328                     c=${c%_outdev}_muxer
7329                 ;;
7330             esac
7331             printf "    &ff_%s,\n" $c >> $TMPH
7332         fi
7333     done
7334     if [ "$name" = "filter_list" ]; then
7335         for c in asrc_abuffer vsrc_buffer asink_abuffer vsink_buffer; do
7336             printf "    &ff_%s,\n" $c >> $TMPH
7337         done
7338     fi
7339     echo "    NULL };" >> $TMPH
7340     cp_if_changed $TMPH $file
7341 }
7342
7343 print_enabled_components libavfilter/filter_list.c AVFilter filter_list $FILTER_LIST
7344 print_enabled_components libavcodec/codec_list.c AVCodec codec_list $CODEC_LIST
7345 print_enabled_components libavcodec/parser_list.c AVCodecParser parser_list $PARSER_LIST
7346 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
7347 print_enabled_components libavformat/demuxer_list.c AVInputFormat demuxer_list $DEMUXER_LIST
7348 print_enabled_components libavformat/muxer_list.c AVOutputFormat muxer_list $MUXER_LIST
7349 print_enabled_components libavdevice/indev_list.c AVInputFormat indev_list $INDEV_LIST
7350 print_enabled_components libavdevice/outdev_list.c AVOutputFormat outdev_list $OUTDEV_LIST
7351 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
7352
7353 # Settings for pkg-config files
7354
7355 cat > $TMPH <<EOF
7356 # Automatically generated by configure - do not modify!
7357 shared=$shared
7358 build_suffix=$build_suffix
7359 prefix=$prefix
7360 libdir=$libdir
7361 incdir=$incdir
7362 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
7363 source_path=${source_path}
7364 LIBPREF=${LIBPREF}
7365 LIBSUF=${LIBSUF}
7366 extralibs_avutil="$avutil_extralibs"
7367 extralibs_avcodec="$avcodec_extralibs"
7368 extralibs_avformat="$avformat_extralibs"
7369 extralibs_avdevice="$avdevice_extralibs"
7370 extralibs_avfilter="$avfilter_extralibs"
7371 extralibs_avresample="$avresample_extralibs"
7372 extralibs_postproc="$postproc_extralibs"
7373 extralibs_swscale="$swscale_extralibs"
7374 extralibs_swresample="$swresample_extralibs"
7375 EOF
7376
7377 for lib in $LIBRARY_LIST; do
7378     lib_deps="$(eval echo \$${lib}_deps)"
7379     echo ${lib}_deps=\"$lib_deps\" >> $TMPH
7380 done
7381
7382 cp_if_changed $TMPH ffbuild/config.sh