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_encoder_deps="v4l2_m2m h264_v4l2_m2m"
2961 hevc_amf_encoder_deps="amf"
2962 hevc_cuvid_decoder_deps="cuvid"
2963 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2964 hevc_mediacodec_decoder_deps="mediacodec"
2965 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2966 hevc_nvenc_encoder_deps="nvenc"
2967 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec"
2968 hevc_qsv_encoder_select="hevcparse qsvenc"
2969 hevc_rkmpp_decoder_deps="rkmpp"
2970 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
2971 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2972 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
2973 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
2974 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
2975 mjpeg_cuvid_decoder_deps="cuvid"
2976 mjpeg_qsv_encoder_deps="libmfx"
2977 mjpeg_qsv_encoder_select="qsvenc"
2978 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2979 mjpeg_vaapi_encoder_select="cbs_jpeg jpegtables vaapi_encode"
2980 mpeg1_cuvid_decoder_deps="cuvid"
2981 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
2982 mpeg2_crystalhd_decoder_select="crystalhd"
2983 mpeg2_cuvid_decoder_deps="cuvid"
2984 mpeg2_mmal_decoder_deps="mmal"
2985 mpeg2_mediacodec_decoder_deps="mediacodec"
2986 mpeg2_qsv_decoder_select="qsvdec mpegvideo_parser"
2987 mpeg2_qsv_encoder_select="qsvenc"
2988 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
2989 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
2990 mpeg4_crystalhd_decoder_select="crystalhd"
2991 mpeg4_cuvid_decoder_deps="cuvid"
2992 mpeg4_mediacodec_decoder_deps="mediacodec"
2993 mpeg4_mmal_decoder_deps="mmal"
2994 mpeg4_omx_encoder_deps="omx"
2995 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2996 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2997 msmpeg4_crystalhd_decoder_select="crystalhd"
2998 nvenc_h264_encoder_select="h264_nvenc_encoder"
2999 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
3000 vc1_crystalhd_decoder_select="crystalhd"
3001 vc1_cuvid_decoder_deps="cuvid"
3002 vc1_mmal_decoder_deps="mmal"
3003 vc1_qsv_decoder_select="qsvdec vc1_parser"
3004 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
3005 vp8_cuvid_decoder_deps="cuvid"
3006 vp8_mediacodec_decoder_deps="mediacodec"
3007 vp8_qsv_decoder_select="qsvdec vp8_parser"
3008 vp8_rkmpp_decoder_deps="rkmpp"
3009 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
3010 vp8_vaapi_encoder_select="vaapi_encode"
3011 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
3012 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
3013 vp9_cuvid_decoder_deps="cuvid"
3014 vp9_mediacodec_decoder_deps="mediacodec"
3015 vp9_rkmpp_decoder_deps="rkmpp"
3016 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
3017 vp9_vaapi_encoder_select="vaapi_encode"
3018 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
3019 wmv3_crystalhd_decoder_select="crystalhd"
3020
3021 # parsers
3022 aac_parser_select="adts_header"
3023 h264_parser_select="golomb h264dsp h264parse"
3024 hevc_parser_select="hevcparse"
3025 mpegaudio_parser_select="mpegaudioheader"
3026 mpegvideo_parser_select="mpegvideo"
3027 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
3028 vc1_parser_select="vc1dsp"
3029
3030 # bitstream_filters
3031 aac_adtstoasc_bsf_select="adts_header"
3032 eac3_core_bsf_select="ac3_parser"
3033 filter_units_bsf_select="cbs"
3034 h264_metadata_bsf_deps="const_nan"
3035 h264_metadata_bsf_select="cbs_h264"
3036 h264_redundant_pps_bsf_select="cbs_h264"
3037 hevc_metadata_bsf_select="cbs_h265"
3038 mjpeg2jpeg_bsf_select="jpegtables"
3039 mpeg2_metadata_bsf_select="cbs_mpeg2"
3040 trace_headers_bsf_select="cbs"
3041 vp9_metadata_bsf_select="cbs_vp9"
3042
3043 # external libraries
3044 aac_at_decoder_deps="audiotoolbox"
3045 aac_at_decoder_select="aac_adtstoasc_bsf"
3046 ac3_at_decoder_deps="audiotoolbox"
3047 ac3_at_decoder_select="ac3_parser"
3048 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
3049 alac_at_decoder_deps="audiotoolbox"
3050 amr_nb_at_decoder_deps="audiotoolbox"
3051 avisynth_deps_any="libdl LoadLibrary"
3052 avisynth_demuxer_deps="avisynth"
3053 avisynth_demuxer_select="riffdec"
3054 eac3_at_decoder_deps="audiotoolbox"
3055 eac3_at_decoder_select="ac3_parser"
3056 gsm_ms_at_decoder_deps="audiotoolbox"
3057 ilbc_at_decoder_deps="audiotoolbox"
3058 mp1_at_decoder_deps="audiotoolbox"
3059 mp2_at_decoder_deps="audiotoolbox"
3060 mp3_at_decoder_deps="audiotoolbox"
3061 mp1_at_decoder_select="mpegaudioheader"
3062 mp2_at_decoder_select="mpegaudioheader"
3063 mp3_at_decoder_select="mpegaudioheader"
3064 pcm_alaw_at_decoder_deps="audiotoolbox"
3065 pcm_mulaw_at_decoder_deps="audiotoolbox"
3066 qdmc_at_decoder_deps="audiotoolbox"
3067 qdm2_at_decoder_deps="audiotoolbox"
3068 aac_at_encoder_deps="audiotoolbox"
3069 aac_at_encoder_select="audio_frame_queue"
3070 alac_at_encoder_deps="audiotoolbox"
3071 alac_at_encoder_select="audio_frame_queue"
3072 ilbc_at_encoder_deps="audiotoolbox"
3073 ilbc_at_encoder_select="audio_frame_queue"
3074 pcm_alaw_at_encoder_deps="audiotoolbox"
3075 pcm_alaw_at_encoder_select="audio_frame_queue"
3076 pcm_mulaw_at_encoder_deps="audiotoolbox"
3077 pcm_mulaw_at_encoder_select="audio_frame_queue"
3078 chromaprint_muxer_deps="chromaprint"
3079 h264_videotoolbox_encoder_deps="pthreads"
3080 h264_videotoolbox_encoder_select="videotoolbox_encoder"
3081 hevc_videotoolbox_encoder_deps="pthreads"
3082 hevc_videotoolbox_encoder_select="videotoolbox_encoder"
3083 libaom_av1_decoder_deps="libaom"
3084 libaom_av1_encoder_deps="libaom"
3085 libaom_av1_encoder_select="extract_extradata_bsf"
3086 libcelt_decoder_deps="libcelt"
3087 libcodec2_decoder_deps="libcodec2"
3088 libcodec2_encoder_deps="libcodec2"
3089 libdavs2_decoder_deps="libdavs2"
3090 libfdk_aac_decoder_deps="libfdk_aac"
3091 libfdk_aac_encoder_deps="libfdk_aac"
3092 libfdk_aac_encoder_select="audio_frame_queue"
3093 libgme_demuxer_deps="libgme"
3094 libgsm_decoder_deps="libgsm"
3095 libgsm_encoder_deps="libgsm"
3096 libgsm_ms_decoder_deps="libgsm"
3097 libgsm_ms_encoder_deps="libgsm"
3098 libilbc_decoder_deps="libilbc"
3099 libilbc_encoder_deps="libilbc"
3100 libkvazaar_encoder_deps="libkvazaar"
3101 libmodplug_demuxer_deps="libmodplug"
3102 libmp3lame_encoder_deps="libmp3lame"
3103 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
3104 libopencore_amrnb_decoder_deps="libopencore_amrnb"
3105 libopencore_amrnb_encoder_deps="libopencore_amrnb"
3106 libopencore_amrnb_encoder_select="audio_frame_queue"
3107 libopencore_amrwb_decoder_deps="libopencore_amrwb"
3108 libopenh264_decoder_deps="libopenh264"
3109 libopenh264_decoder_select="h264_mp4toannexb_bsf"
3110 libopenh264_encoder_deps="libopenh264"
3111 libopenjpeg_decoder_deps="libopenjpeg"
3112 libopenjpeg_encoder_deps="libopenjpeg"
3113 libopenmpt_demuxer_deps="libopenmpt"
3114 libopus_decoder_deps="libopus"
3115 libopus_encoder_deps="libopus"
3116 libopus_encoder_select="audio_frame_queue"
3117 librsvg_decoder_deps="librsvg"
3118 libshine_encoder_deps="libshine"
3119 libshine_encoder_select="audio_frame_queue"
3120 libspeex_decoder_deps="libspeex"
3121 libspeex_encoder_deps="libspeex"
3122 libspeex_encoder_select="audio_frame_queue"
3123 libtheora_encoder_deps="libtheora"
3124 libtwolame_encoder_deps="libtwolame"
3125 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
3126 libvorbis_decoder_deps="libvorbis"
3127 libvorbis_encoder_deps="libvorbis libvorbisenc"
3128 libvorbis_encoder_select="audio_frame_queue"
3129 libvpx_vp8_decoder_deps="libvpx"
3130 libvpx_vp8_encoder_deps="libvpx"
3131 libvpx_vp9_decoder_deps="libvpx"
3132 libvpx_vp9_encoder_deps="libvpx"
3133 libwavpack_encoder_deps="libwavpack"
3134 libwavpack_encoder_select="audio_frame_queue"
3135 libwebp_encoder_deps="libwebp"
3136 libwebp_anim_encoder_deps="libwebp"
3137 libx262_encoder_deps="libx262"
3138 libx264_encoder_deps="libx264"
3139 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
3140 libx264rgb_encoder_select="libx264_encoder"
3141 libx265_encoder_deps="libx265"
3142 libxavs_encoder_deps="libxavs"
3143 libxavs2_encoder_deps="libxavs2"
3144 libxvid_encoder_deps="libxvid"
3145 libzvbi_teletext_decoder_deps="libzvbi"
3146 vapoursynth_demuxer_deps="vapoursynth"
3147 videotoolbox_suggest="coreservices"
3148 videotoolbox_deps="corefoundation coremedia corevideo"
3149 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
3150
3151 # demuxers / muxers
3152 ac3_demuxer_select="ac3_parser"
3153 aiff_muxer_select="iso_media"
3154 asf_demuxer_select="riffdec"
3155 asf_o_demuxer_select="riffdec"
3156 asf_muxer_select="riffenc"
3157 asf_stream_muxer_select="asf_muxer"
3158 avi_demuxer_select="iso_media riffdec exif"
3159 avi_muxer_select="riffenc"
3160 caf_demuxer_select="iso_media riffdec"
3161 caf_muxer_select="iso_media"
3162 dash_muxer_select="mp4_muxer"
3163 dash_demuxer_deps="libxml2"
3164 dirac_demuxer_select="dirac_parser"
3165 dts_demuxer_select="dca_parser"
3166 dtshd_demuxer_select="dca_parser"
3167 dv_demuxer_select="dvprofile"
3168 dv_muxer_select="dvprofile"
3169 dxa_demuxer_select="riffdec"
3170 eac3_demuxer_select="ac3_parser"
3171 f4v_muxer_select="mov_muxer"
3172 fifo_muxer_deps="threads"
3173 flac_demuxer_select="flac_parser"
3174 hds_muxer_select="flv_muxer"
3175 hls_muxer_select="mpegts_muxer"
3176 hls_muxer_suggest="gcrypt openssl"
3177 image2_alias_pix_demuxer_select="image2_demuxer"
3178 image2_brender_pix_demuxer_select="image2_demuxer"
3179 ipod_muxer_select="mov_muxer"
3180 ismv_muxer_select="mov_muxer"
3181 matroska_audio_muxer_select="matroska_muxer"
3182 matroska_demuxer_select="iso_media riffdec"
3183 matroska_demuxer_suggest="bzlib lzo zlib"
3184 matroska_muxer_select="iso_media riffenc"
3185 mmf_muxer_select="riffenc"
3186 mov_demuxer_select="iso_media riffdec"
3187 mov_demuxer_suggest="zlib"
3188 mov_muxer_select="iso_media riffenc rtpenc_chain"
3189 mp3_demuxer_select="mpegaudio_parser"
3190 mp3_muxer_select="mpegaudioheader"
3191 mp4_muxer_select="mov_muxer"
3192 mpegts_demuxer_select="iso_media"
3193 mpegts_muxer_select="adts_muxer latm_muxer"
3194 mpegtsraw_demuxer_select="mpegts_demuxer"
3195 mxf_d10_muxer_select="mxf_muxer"
3196 mxf_opatom_muxer_select="mxf_muxer"
3197 nut_muxer_select="riffenc"
3198 nuv_demuxer_select="riffdec"
3199 oga_muxer_select="ogg_muxer"
3200 ogg_demuxer_select="dirac_parse"
3201 ogv_muxer_select="ogg_muxer"
3202 opus_muxer_select="ogg_muxer"
3203 psp_muxer_select="mov_muxer"
3204 rtp_demuxer_select="sdp_demuxer"
3205 rtp_muxer_select="golomb"
3206 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3207 rtsp_demuxer_select="http_protocol rtpdec"
3208 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3209 sap_demuxer_select="sdp_demuxer"
3210 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3211 sdp_demuxer_select="rtpdec"
3212 smoothstreaming_muxer_select="ismv_muxer"
3213 spdif_demuxer_select="adts_header"
3214 spdif_muxer_select="adts_header"
3215 spx_muxer_select="ogg_muxer"
3216 swf_demuxer_suggest="zlib"
3217 tak_demuxer_select="tak_parser"
3218 tg2_muxer_select="mov_muxer"
3219 tgp_muxer_select="mov_muxer"
3220 vobsub_demuxer_select="mpegps_demuxer"
3221 w64_demuxer_select="wav_demuxer"
3222 w64_muxer_select="wav_muxer"
3223 wav_demuxer_select="riffdec"
3224 wav_muxer_select="riffenc"
3225 webm_muxer_select="iso_media riffenc"
3226 webm_dash_manifest_demuxer_select="matroska_demuxer"
3227 wtv_demuxer_select="mpegts_demuxer riffdec"
3228 wtv_muxer_select="mpegts_muxer riffenc"
3229 xmv_demuxer_select="riffdec"
3230 xwma_demuxer_select="riffdec"
3231
3232 # indevs / outdevs
3233 android_camera_indev_deps="android camera2ndk mediandk pthreads"
3234 android_camera_indev_extralibs="-landroid -lcamera2ndk -lmediandk"
3235 alsa_indev_deps="alsa"
3236 alsa_outdev_deps="alsa"
3237 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3238 avfoundation_indev_suggest="coregraphics applicationservices"
3239 avfoundation_indev_extralibs="-framework Foundation"
3240 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3241 caca_outdev_deps="libcaca"
3242 decklink_deps_any="libdl LoadLibrary"
3243 decklink_indev_deps="decklink threads"
3244 decklink_indev_extralibs="-lstdc++"
3245 decklink_outdev_deps="decklink threads"
3246 decklink_outdev_suggest="libklvanc"
3247 decklink_outdev_extralibs="-lstdc++"
3248 libndi_newtek_indev_deps="libndi_newtek"
3249 libndi_newtek_indev_extralibs="-lndi"
3250 libndi_newtek_outdev_deps="libndi_newtek"
3251 libndi_newtek_outdev_extralibs="-lndi"
3252 dshow_indev_deps="IBaseFilter"
3253 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3254 fbdev_indev_deps="linux_fb_h"
3255 fbdev_outdev_deps="linux_fb_h"
3256 gdigrab_indev_deps="CreateDIBSection"
3257 gdigrab_indev_extralibs="-lgdi32"
3258 gdigrab_indev_select="bmp_decoder"
3259 iec61883_indev_deps="libiec61883"
3260 jack_indev_deps="libjack"
3261 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3262 kmsgrab_indev_deps="libdrm"
3263 lavfi_indev_deps="avfilter"
3264 libcdio_indev_deps="libcdio"
3265 libdc1394_indev_deps="libdc1394"
3266 openal_indev_deps="openal"
3267 opengl_outdev_deps="opengl"
3268 oss_indev_deps_any="sys_soundcard_h"
3269 oss_outdev_deps_any="sys_soundcard_h"
3270 pulse_indev_deps="libpulse"
3271 pulse_outdev_deps="libpulse"
3272 sdl2_outdev_deps="sdl2"
3273 sndio_indev_deps="sndio"
3274 sndio_outdev_deps="sndio"
3275 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3276 v4l2_indev_suggest="libv4l2"
3277 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3278 v4l2_outdev_suggest="libv4l2"
3279 vfwcap_indev_deps="vfw32 vfwcap_defines"
3280 xcbgrab_indev_deps="libxcb"
3281 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3282 xv_outdev_deps="xlib"
3283
3284 # protocols
3285 async_protocol_deps="threads"
3286 bluray_protocol_deps="libbluray"
3287 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3288 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl mbedtls"
3289 ffrtmpcrypt_protocol_select="tcp_protocol"
3290 ffrtmphttp_protocol_conflict="librtmp_protocol"
3291 ffrtmphttp_protocol_select="http_protocol"
3292 ftp_protocol_select="tcp_protocol"
3293 gopher_protocol_select="network"
3294 http_protocol_select="tcp_protocol"
3295 http_protocol_suggest="zlib"
3296 httpproxy_protocol_select="tcp_protocol"
3297 httpproxy_protocol_suggest="zlib"
3298 https_protocol_select="tls_protocol"
3299 https_protocol_suggest="zlib"
3300 icecast_protocol_select="http_protocol"
3301 mmsh_protocol_select="http_protocol"
3302 mmst_protocol_select="network"
3303 rtmp_protocol_conflict="librtmp_protocol"
3304 rtmp_protocol_select="tcp_protocol"
3305 rtmp_protocol_suggest="zlib"
3306 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3307 rtmpe_protocol_suggest="zlib"
3308 rtmps_protocol_conflict="librtmp_protocol"
3309 rtmps_protocol_select="tls_protocol"
3310 rtmps_protocol_suggest="zlib"
3311 rtmpt_protocol_select="ffrtmphttp_protocol"
3312 rtmpt_protocol_suggest="zlib"
3313 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3314 rtmpte_protocol_suggest="zlib"
3315 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3316 rtmpts_protocol_suggest="zlib"
3317 rtp_protocol_select="udp_protocol"
3318 schannel_conflict="openssl gnutls libtls mbedtls"
3319 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3320 sctp_protocol_select="network"
3321 securetransport_conflict="openssl gnutls libtls mbedtls"
3322 srtp_protocol_select="rtp_protocol srtp"
3323 tcp_protocol_select="network"
3324 tls_protocol_deps_any="gnutls openssl schannel securetransport libtls mbedtls"
3325 tls_protocol_select="tcp_protocol"
3326 udp_protocol_select="network"
3327 udplite_protocol_select="network"
3328 unix_protocol_deps="sys_un_h"
3329 unix_protocol_select="network"
3330
3331 # external library protocols
3332 librtmp_protocol_deps="librtmp"
3333 librtmpe_protocol_deps="librtmp"
3334 librtmps_protocol_deps="librtmp"
3335 librtmpt_protocol_deps="librtmp"
3336 librtmpte_protocol_deps="librtmp"
3337 libsmbclient_protocol_deps="libsmbclient gplv3"
3338 libsrt_protocol_deps="libsrt"
3339 libsrt_protocol_select="network"
3340 libssh_protocol_deps="libssh"
3341 libtls_conflict="openssl gnutls mbedtls"
3342
3343 # filters
3344 afftdn_filter_deps="avcodec"
3345 afftdn_filter_select="fft"
3346 afftfilt_filter_deps="avcodec"
3347 afftfilt_filter_select="fft"
3348 afir_filter_deps="avcodec"
3349 afir_filter_select="fft"
3350 amovie_filter_deps="avcodec avformat"
3351 aresample_filter_deps="swresample"
3352 ass_filter_deps="libass"
3353 atempo_filter_deps="avcodec"
3354 atempo_filter_select="rdft"
3355 avgblur_opencl_filter_deps="opencl"
3356 azmq_filter_deps="libzmq"
3357 blackframe_filter_deps="gpl"
3358 bm3d_filter_deps="avcodec"
3359 bm3d_filter_select="dct"
3360 boxblur_filter_deps="gpl"
3361 boxblur_opencl_filter_deps="opencl gpl"
3362 bs2b_filter_deps="libbs2b"
3363 colormatrix_filter_deps="gpl"
3364 convolution_opencl_filter_deps="opencl"
3365 convolve_filter_deps="avcodec"
3366 convolve_filter_select="fft"
3367 coreimage_filter_deps="coreimage appkit"
3368 coreimage_filter_extralibs="-framework OpenGL"
3369 coreimagesrc_filter_deps="coreimage appkit"
3370 coreimagesrc_filter_extralibs="-framework OpenGL"
3371 cover_rect_filter_deps="avcodec avformat gpl"
3372 cropdetect_filter_deps="gpl"
3373 deconvolve_filter_deps="avcodec"
3374 deconvolve_filter_select="fft"
3375 deinterlace_qsv_filter_deps="libmfx"
3376 deinterlace_vaapi_filter_deps="vaapi"
3377 delogo_filter_deps="gpl"
3378 denoise_vaapi_filter_deps="vaapi"
3379 deshake_filter_select="pixelutils"
3380 dilation_opencl_filter_deps="opencl"
3381 drawtext_filter_deps="libfreetype"
3382 drawtext_filter_suggest="libfontconfig libfribidi"
3383 elbg_filter_deps="avcodec"
3384 eq_filter_deps="gpl"
3385 erosion_opencl_filter_deps="opencl"
3386 fftfilt_filter_deps="avcodec"
3387 fftfilt_filter_select="rdft"
3388 fftdnoiz_filter_deps="avcodec"
3389 fftdnoiz_filter_select="fft"
3390 find_rect_filter_deps="avcodec avformat gpl"
3391 firequalizer_filter_deps="avcodec"
3392 firequalizer_filter_select="rdft"
3393 flite_filter_deps="libflite"
3394 framerate_filter_select="pixelutils"
3395 frei0r_filter_deps="frei0r libdl"
3396 frei0r_src_filter_deps="frei0r libdl"
3397 fspp_filter_deps="gpl"
3398 geq_filter_deps="gpl"
3399 histeq_filter_deps="gpl"
3400 hqdn3d_filter_deps="gpl"
3401 interlace_filter_deps="gpl"
3402 kerndeint_filter_deps="gpl"
3403 ladspa_filter_deps="ladspa libdl"
3404 lensfun_filter_deps="liblensfun version3"
3405 lv2_filter_deps="lv2"
3406 mcdeint_filter_deps="avcodec gpl"
3407 movie_filter_deps="avcodec avformat"
3408 mpdecimate_filter_deps="gpl"
3409 mpdecimate_filter_select="pixelutils"
3410 mptestsrc_filter_deps="gpl"
3411 negate_filter_deps="lut_filter"
3412 nnedi_filter_deps="gpl"
3413 ocr_filter_deps="libtesseract"
3414 ocv_filter_deps="libopencv"
3415 openclsrc_filter_deps="opencl"
3416 overlay_opencl_filter_deps="opencl"
3417 overlay_qsv_filter_deps="libmfx"
3418 overlay_qsv_filter_select="qsvvpp"
3419 owdenoise_filter_deps="gpl"
3420 pan_filter_deps="swresample"
3421 perspective_filter_deps="gpl"
3422 phase_filter_deps="gpl"
3423 pp7_filter_deps="gpl"
3424 pp_filter_deps="gpl postproc"
3425 prewitt_opencl_filter_deps="opencl"
3426 procamp_vaapi_filter_deps="vaapi"
3427 program_opencl_filter_deps="opencl"
3428 pullup_filter_deps="gpl"
3429 removelogo_filter_deps="avcodec avformat swscale"
3430 repeatfields_filter_deps="gpl"
3431 resample_filter_deps="avresample"
3432 roberts_opencl_filter_deps="opencl"
3433 rubberband_filter_deps="librubberband"
3434 sab_filter_deps="gpl swscale"
3435 scale2ref_filter_deps="swscale"
3436 scale_filter_deps="swscale"
3437 scale_qsv_filter_deps="libmfx"
3438 select_filter_select="pixelutils"
3439 sharpness_vaapi_filter_deps="vaapi"
3440 showcqt_filter_deps="avcodec avformat swscale"
3441 showcqt_filter_suggest="libfontconfig libfreetype"
3442 showcqt_filter_select="fft"
3443 showfreqs_filter_deps="avcodec"
3444 showfreqs_filter_select="fft"
3445 showspectrum_filter_deps="avcodec"
3446 showspectrum_filter_select="fft"
3447 showspectrumpic_filter_deps="avcodec"
3448 showspectrumpic_filter_select="fft"
3449 signature_filter_deps="gpl avcodec avformat"
3450 smartblur_filter_deps="gpl swscale"
3451 sobel_opencl_filter_deps="opencl"
3452 sofalizer_filter_deps="libmysofa avcodec"
3453 sofalizer_filter_select="fft"
3454 spectrumsynth_filter_deps="avcodec"
3455 spectrumsynth_filter_select="fft"
3456 spp_filter_deps="gpl avcodec"
3457 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3458 sr_filter_deps="avformat swscale"
3459 sr_filter_select="dnn"
3460 stereo3d_filter_deps="gpl"
3461 subtitles_filter_deps="avformat avcodec libass"
3462 super2xsai_filter_deps="gpl"
3463 pixfmts_super2xsai_test_deps="super2xsai_filter"
3464 tinterlace_filter_deps="gpl"
3465 tinterlace_merge_test_deps="tinterlace_filter"
3466 tinterlace_pad_test_deps="tinterlace_filter"
3467 tonemap_filter_deps="const_nan"
3468 tonemap_opencl_filter_deps="opencl const_nan"
3469 unsharp_opencl_filter_deps="opencl"
3470 uspp_filter_deps="gpl avcodec"
3471 vaguedenoiser_filter_deps="gpl"
3472 vidstabdetect_filter_deps="libvidstab"
3473 vidstabtransform_filter_deps="libvidstab"
3474 libvmaf_filter_deps="libvmaf pthreads"
3475 zmq_filter_deps="libzmq"
3476 zoompan_filter_deps="swscale"
3477 zscale_filter_deps="libzimg const_nan"
3478 scale_vaapi_filter_deps="vaapi"
3479 vpp_qsv_filter_deps="libmfx"
3480 vpp_qsv_filter_select="qsvvpp"
3481
3482 # examples
3483 avio_dir_cmd_deps="avformat avutil"
3484 avio_reading_deps="avformat avcodec avutil"
3485 decode_audio_example_deps="avcodec avutil"
3486 decode_video_example_deps="avcodec avutil"
3487 demuxing_decoding_example_deps="avcodec avformat avutil"
3488 encode_audio_example_deps="avcodec avutil"
3489 encode_video_example_deps="avcodec avutil"
3490 extract_mvs_example_deps="avcodec avformat avutil"
3491 filter_audio_example_deps="avfilter avutil"
3492 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3493 filtering_video_example_deps="avfilter avcodec avformat avutil"
3494 http_multiclient_example_deps="avformat avutil fork"
3495 hw_decode_example_deps="avcodec avformat avutil"
3496 metadata_example_deps="avformat avutil"
3497 muxing_example_deps="avcodec avformat avutil swscale"
3498 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3499 remuxing_example_deps="avcodec avformat avutil"
3500 resampling_audio_example_deps="avutil swresample"
3501 scaling_video_example_deps="avutil swscale"
3502 transcode_aac_example_deps="avcodec avformat swresample"
3503 transcoding_example_deps="avfilter avcodec avformat avutil"
3504 vaapi_encode_example_deps="avcodec avutil h264_vaapi_encoder"
3505 vaapi_transcode_example_deps="avcodec avformat avutil h264_vaapi_encoder"
3506
3507 # EXTRALIBS_LIST
3508 cpu_init_extralibs="pthreads_extralibs"
3509 cws2fws_extralibs="zlib_extralibs"
3510
3511 # libraries, in any order
3512 avcodec_deps="avutil"
3513 avcodec_suggest="libm"
3514 avcodec_select="null_bsf"
3515 avdevice_deps="avformat avcodec avutil"
3516 avdevice_suggest="libm"
3517 avfilter_deps="avutil"
3518 avfilter_suggest="libm"
3519 avformat_deps="avcodec avutil"
3520 avformat_suggest="libm network zlib"
3521 avresample_deps="avutil"
3522 avresample_suggest="libm"
3523 avutil_suggest="clock_gettime ffnvcodec libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia bcrypt"
3524 postproc_deps="avutil gpl"
3525 postproc_suggest="libm"
3526 swresample_deps="avutil"
3527 swresample_suggest="libm libsoxr"
3528 swscale_deps="avutil"
3529 swscale_suggest="libm"
3530
3531 avcodec_extralibs="pthreads_extralibs iconv_extralibs"
3532 avfilter_extralibs="pthreads_extralibs"
3533 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3534
3535 # programs
3536 ffmpeg_deps="avcodec avfilter avformat"
3537 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3538                null_filter
3539                trim_filter"
3540 ffmpeg_suggest="ole32 psapi shell32"
3541 ffplay_deps="avcodec avformat swscale swresample sdl2"
3542 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3543 ffplay_suggest="shell32"
3544 ffprobe_deps="avcodec avformat"
3545 ffprobe_suggest="shell32"
3546
3547 # documentation
3548 podpages_deps="perl"
3549 manpages_deps="perl pod2man"
3550 htmlpages_deps="perl"
3551 htmlpages_deps_any="makeinfo_html texi2html"
3552 txtpages_deps="perl makeinfo"
3553 doc_deps_any="manpages htmlpages podpages txtpages"
3554
3555 # default parameters
3556
3557 logfile="ffbuild/config.log"
3558
3559 # installation paths
3560 prefix_default="/usr/local"
3561 bindir_default='${prefix}/bin'
3562 datadir_default='${prefix}/share/ffmpeg'
3563 docdir_default='${prefix}/share/doc/ffmpeg'
3564 incdir_default='${prefix}/include'
3565 libdir_default='${prefix}/lib'
3566 mandir_default='${prefix}/share/man'
3567
3568 # toolchain
3569 ar_default="ar"
3570 cc_default="gcc"
3571 cxx_default="g++"
3572 host_cc_default="gcc"
3573 doxygen_default="doxygen"
3574 install="install"
3575 ln_s_default="ln -s -f"
3576 nm_default="nm -g"
3577 pkg_config_default=pkg-config
3578 ranlib_default="ranlib"
3579 strip_default="strip"
3580 version_script='--version-script'
3581 objformat="elf32"
3582 x86asmexe_default="nasm"
3583 windres_default="windres"
3584 nvcc_default="nvcc"
3585 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3586 striptype="direct"
3587
3588 # OS
3589 target_os_default=$(tolower $(uname -s))
3590 host_os=$target_os_default
3591
3592 # machine
3593 if test "$target_os_default" = aix; then
3594     arch_default=$(uname -p)
3595     strip_default="strip -X32_64"
3596 else
3597     arch_default=$(uname -m)
3598 fi
3599 cpu="generic"
3600 intrinsics="none"
3601
3602 # configurable options
3603 enable $PROGRAM_LIST
3604 enable $DOCUMENT_LIST
3605 enable $EXAMPLE_LIST
3606 enable $(filter_out avresample $LIBRARY_LIST)
3607 enable stripping
3608
3609 enable asm
3610 enable debug
3611 enable doc
3612 enable faan faandct faanidct
3613 enable optimizations
3614 enable runtime_cpudetect
3615 enable safe_bitstream_reader
3616 enable static
3617 enable swscale_alpha
3618 enable valgrind_backtrace
3619
3620 sws_max_filter_size_default=256
3621 set_default sws_max_filter_size
3622
3623 # internal components are enabled by default
3624 enable $EXTRALIBS_LIST
3625
3626 # Avoid external, non-system, libraries getting enabled by dependency resolution
3627 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3628
3629 # build settings
3630 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3631 LIBPREF="lib"
3632 LIBSUF=".a"
3633 FULLNAME='$(NAME)$(BUILDSUF)'
3634 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3635 SLIBPREF="lib"
3636 SLIBSUF=".so"
3637 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3638 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3639 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3640 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3641 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3642 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3643 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3644
3645 asflags_filter=echo
3646 cflags_filter=echo
3647 ldflags_filter=echo
3648
3649 AS_C='-c'
3650 AS_O='-o $@'
3651 CC_C='-c'
3652 CC_E='-E -o $@'
3653 CC_O='-o $@'
3654 CXX_C='-c'
3655 CXX_O='-o $@'
3656 OBJCC_C='-c'
3657 OBJCC_E='-E -o $@'
3658 OBJCC_O='-o $@'
3659 X86ASM_O='-o $@'
3660 LD_O='-o $@'
3661 LD_LIB='-l%'
3662 LD_PATH='-L'
3663 HOSTCC_C='-c'
3664 HOSTCC_E='-E -o $@'
3665 HOSTCC_O='-o $@'
3666 HOSTLD_O='-o $@'
3667 NVCC_C='-c'
3668 NVCC_O='-o $@'
3669
3670 host_extralibs='-lm'
3671 host_cflags_filter=echo
3672 host_ldflags_filter=echo
3673
3674 target_path='$(CURDIR)'
3675
3676 # since the object filename is not given with the -MM flag, the compiler
3677 # is only able to print the basename, and we must add the path ourselves
3678 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3679 DEPFLAGS='-MM'
3680
3681 mkdir -p ffbuild
3682
3683 # find source path
3684 if test -f configure; then
3685     source_path=.
3686 else
3687     source_path=$(cd $(dirname "$0"); pwd)
3688     case "$source_path" in
3689         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3690     esac
3691     test -e "$source_path/config.h" &&
3692         die "Out of tree builds are impossible with config.h in source dir."
3693 fi
3694
3695 for v in "$@"; do
3696     r=${v#*=}
3697     l=${v%"$r"}
3698     r=$(sh_quote "$r")
3699     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3700 done
3701
3702 find_things_extern(){
3703     thing=$1
3704     pattern=$2
3705     file=$source_path/$3
3706     out=${4:-$thing}
3707     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$out/p" "$file"
3708 }
3709
3710 find_filters_extern(){
3711     file=$source_path/$1
3712     #sed -n "s/^extern AVFilter ff_\([avfsinkrc]\{2,5\}\)_\(\w\+\);/\2_filter/p" $file
3713     sed -E -n "s/^extern AVFilter ff_([avfsinkrc]{2,5})_([a-zA-Z0-9_]+);/\2_filter/p" $file
3714 }
3715
3716 FILTER_LIST=$(find_filters_extern libavfilter/allfilters.c)
3717 OUTDEV_LIST=$(find_things_extern muxer AVOutputFormat libavdevice/alldevices.c outdev)
3718 INDEV_LIST=$(find_things_extern demuxer AVInputFormat libavdevice/alldevices.c indev)
3719 MUXER_LIST=$(find_things_extern muxer AVOutputFormat libavformat/allformats.c)
3720 DEMUXER_LIST=$(find_things_extern demuxer AVInputFormat libavformat/allformats.c)
3721 ENCODER_LIST=$(find_things_extern encoder AVCodec libavcodec/allcodecs.c)
3722 DECODER_LIST=$(find_things_extern decoder AVCodec libavcodec/allcodecs.c)
3723 CODEC_LIST="
3724     $ENCODER_LIST
3725     $DECODER_LIST
3726 "
3727 PARSER_LIST=$(find_things_extern parser AVCodecParser libavcodec/parsers.c)
3728 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3729 HWACCEL_LIST=$(find_things_extern hwaccel AVHWAccel libavcodec/hwaccels.h)
3730 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3731
3732 AVCODEC_COMPONENTS_LIST="
3733     $BSF_LIST
3734     $DECODER_LIST
3735     $ENCODER_LIST
3736     $HWACCEL_LIST
3737     $PARSER_LIST
3738 "
3739
3740 AVDEVICE_COMPONENTS_LIST="
3741     $INDEV_LIST
3742     $OUTDEV_LIST
3743 "
3744
3745 AVFILTER_COMPONENTS_LIST="
3746     $FILTER_LIST
3747 "
3748
3749 AVFORMAT_COMPONENTS_LIST="
3750     $DEMUXER_LIST
3751     $MUXER_LIST
3752     $PROTOCOL_LIST
3753 "
3754
3755 ALL_COMPONENTS="
3756     $AVCODEC_COMPONENTS_LIST
3757     $AVDEVICE_COMPONENTS_LIST
3758     $AVFILTER_COMPONENTS_LIST
3759     $AVFORMAT_COMPONENTS_LIST
3760 "
3761
3762 for n in $COMPONENT_LIST; do
3763     v=$(toupper ${n%s})_LIST
3764     eval enable \$$v
3765     eval ${n}_if_any="\$$v"
3766 done
3767
3768 enable $ARCH_EXT_LIST
3769
3770 die_unknown(){
3771     echo "Unknown option \"$1\"."
3772     echo "See $0 --help for available options."
3773     exit 1
3774 }
3775
3776 print_in_columns() {
3777     cols=$(expr $ncols / 24)
3778     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3779 }
3780
3781 show_list() {
3782     suffix=_$1
3783     shift
3784     echo $* | sed s/$suffix//g | print_in_columns
3785     exit 0
3786 }
3787
3788 rand_list(){
3789     IFS=', '
3790     set -- $*
3791     unset IFS
3792     for thing; do
3793         comp=${thing%:*}
3794         prob=${thing#$comp}
3795         prob=${prob#:}
3796         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3797         echo "prob ${prob:-0.5}"
3798         printf '%s\n' $comp
3799     done
3800 }
3801
3802 do_random(){
3803     action=$1
3804     shift
3805     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3806     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3807 }
3808
3809 for opt do
3810     optval="${opt#*=}"
3811     case "$opt" in
3812         --extra-ldflags=*)
3813             add_ldflags $optval
3814         ;;
3815         --extra-ldexeflags=*)
3816             add_ldexeflags $optval
3817         ;;
3818         --extra-ldsoflags=*)
3819             add_ldsoflags $optval
3820         ;;
3821         --extra-ldlibflags=*)
3822             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3823                  "removed in the future. Use --extra-ldsoflags instead."
3824             add_ldsoflags $optval
3825         ;;
3826         --extra-libs=*)
3827             add_extralibs $optval
3828         ;;
3829         --disable-devices)
3830             disable $INDEV_LIST $OUTDEV_LIST
3831         ;;
3832         --enable-debug=*)
3833             debuglevel="$optval"
3834         ;;
3835         --disable-programs)
3836             disable $PROGRAM_LIST
3837         ;;
3838         --disable-everything)
3839             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3840         ;;
3841         --disable-all)
3842             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3843             disable $LIBRARY_LIST $PROGRAM_LIST doc
3844             enable avutil
3845         ;;
3846         --enable-random|--disable-random)
3847             action=${opt%%-random}
3848             do_random ${action#--} $COMPONENT_LIST
3849         ;;
3850         --enable-random=*|--disable-random=*)
3851             action=${opt%%-random=*}
3852             do_random ${action#--} $optval
3853         ;;
3854         --enable-sdl)
3855             enable sdl2
3856         ;;
3857         --enable-*=*|--disable-*=*)
3858             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3859             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3860             eval list=\$$(toupper $thing)_LIST
3861             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3862             list=$(filter "$name" $list)
3863             [ "$list" = "" ] && warn "Option $opt did not match anything"
3864             $action $list
3865         ;;
3866         --enable-yasm|--disable-yasm)
3867             warn "The ${opt} option is only provided for compatibility and will be\n"\
3868                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3869             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3870         ;;
3871         --yasmexe=*)
3872             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3873                  "removed in the future. Use --x86asmexe instead."
3874             x86asmexe="$optval"
3875         ;;
3876         --enable-?*|--disable-?*)
3877             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3878             if is_in $option $COMPONENT_LIST; then
3879                 test $action = disable && action=unset
3880                 eval $action \$$(toupper ${option%s})_LIST
3881             elif is_in $option $CMDLINE_SELECT; then
3882                 $action $option
3883             else
3884                 die_unknown $opt
3885             fi
3886         ;;
3887         --list-*)
3888             NAME="${opt#--list-}"
3889             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3890             NAME=${NAME%s}
3891             eval show_list $NAME \$$(toupper $NAME)_LIST
3892         ;;
3893         --help|-h) show_help
3894         ;;
3895         --quiet|-q) quiet=yes
3896         ;;
3897         --fatal-warnings) enable fatal_warnings
3898         ;;
3899         --libfuzzer=*)
3900             libfuzzer_path="$optval"
3901         ;;
3902         *)
3903             optname="${opt%%=*}"
3904             optname="${optname#--}"
3905             optname=$(echo "$optname" | sed 's/-/_/g')
3906             if is_in $optname $CMDLINE_SET; then
3907                 eval $optname='$optval'
3908             elif is_in $optname $CMDLINE_APPEND; then
3909                 append $optname "$optval"
3910             else
3911                 die_unknown $opt
3912             fi
3913         ;;
3914     esac
3915 done
3916
3917 for e in $env; do
3918     eval "export $e"
3919 done
3920
3921 if disabled autodetect; then
3922
3923     # Unless iconv is explicitely disabled by the user, we still want to probe
3924     # for the iconv from the libc.
3925     disabled iconv || enable libc_iconv
3926
3927     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3928     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3929 fi
3930 # Mark specifically enabled, but normally autodetected libraries as requested.
3931 for lib in $AUTODETECT_LIBS; do
3932     enabled $lib && request $lib
3933 done
3934 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
3935 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3936 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3937
3938 disabled logging && logfile=/dev/null
3939
3940 # command line configuration sanity checks
3941
3942 # we need to build at least one lib type
3943 if ! enabled_any static shared; then
3944     cat <<EOF
3945 At least one library type must be built.
3946 Specify --enable-static to build the static libraries or --enable-shared to
3947 build the shared libraries as well. To only build the shared libraries specify
3948 --disable-static in addition to --enable-shared.
3949 EOF
3950     exit 1
3951 fi
3952
3953 die_license_disabled() {
3954     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3955 }
3956
3957 die_license_disabled_gpl() {
3958     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3959 }
3960
3961 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3962 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3963
3964 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3965 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3966
3967 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3968
3969 if enabled nonfree; then
3970     license="nonfree and unredistributable"
3971 elif enabled gplv3; then
3972     license="GPL version 3 or later"
3973 elif enabled lgplv3; then
3974     license="LGPL version 3 or later"
3975 elif enabled gpl; then
3976     license="GPL version 2 or later"
3977 else
3978     license="LGPL version 2.1 or later"
3979 fi
3980
3981 enabled_all gnutls openssl &&
3982     die "GnuTLS and OpenSSL must not be enabled at the same time."
3983
3984 enabled_all gnutls mbedtls &&
3985     die "GnuTLS and mbedTLS must not be enabled at the same time."
3986
3987 enabled_all openssl mbedtls &&
3988     die "OpenSSL and mbedTLS must not be enabled at the same time."
3989
3990 # Disable all the library-specific components if the library itself
3991 # is disabled, see AVCODEC_LIST and following _LIST variables.
3992
3993 disable_components(){
3994     disabled ${1} && disable $(
3995         eval components="\$$(toupper ${1})_COMPONENTS"
3996         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3997     )
3998 }
3999
4000 map 'disable_components $v' $LIBRARY_LIST
4001
4002 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
4003 set >> $logfile
4004
4005 test -n "$valgrind" && toolchain="valgrind-memcheck"
4006
4007 enabled ossfuzz && ! echo $CFLAGS | grep -q -- "-fsanitize="  && ! echo $CFLAGS | grep -q -- "-fcoverage-mapping" &&{
4008     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
4009     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
4010 }
4011
4012 case "$toolchain" in
4013     *-asan)
4014         cc_default="${toolchain%-asan}"
4015         add_cflags  -fsanitize=address
4016         add_ldflags -fsanitize=address
4017     ;;
4018     *-msan)
4019         cc_default="${toolchain%-msan}"
4020         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
4021         add_ldflags -fsanitize=memory
4022     ;;
4023     *-tsan)
4024         cc_default="${toolchain%-tsan}"
4025         add_cflags  -fsanitize=thread
4026         add_ldflags -fsanitize=thread
4027         case "$toolchain" in
4028             gcc-tsan)
4029                 add_cflags  -fPIC
4030                 add_ldflags -fPIC
4031                 ;;
4032         esac
4033     ;;
4034     *-usan)
4035         cc_default="${toolchain%-usan}"
4036         add_cflags  -fsanitize=undefined
4037         add_ldflags -fsanitize=undefined
4038     ;;
4039     valgrind-*)
4040         target_exec_default="valgrind"
4041         case "$toolchain" in
4042             valgrind-massif)
4043                 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"
4044                 ;;
4045             valgrind-memcheck)
4046                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
4047                 ;;
4048         esac
4049     ;;
4050     msvc)
4051         # Check whether the current MSVC version needs the C99 converter.
4052         # From MSVC 2013 (compiler major version 18) onwards, it does actually
4053         # support enough of C99 to build ffmpeg. Default to the new
4054         # behaviour if the regexp was unable to match anything, since this
4055         # successfully parses the version number of existing supported
4056         # versions that require the converter (MSVC 2010 and 2012).
4057         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
4058         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
4059             cc_default="cl"
4060             cxx_default="cl"
4061         else
4062             die "Unsupported MSVC version (2013 or newer required)"
4063         fi
4064         ld_default="$source_path/compat/windows/mslink"
4065         nm_default="dumpbin -symbols"
4066         ar_default="lib"
4067         case "$arch" in
4068         aarch64|arm64)
4069             as_default="armasm64"
4070             ;;
4071         arm*)
4072             as_default="armasm"
4073             ;;
4074         esac
4075         target_os_default="win32"
4076         # Use a relative path for TMPDIR. This makes sure all the
4077         # ffconf temp files are written with a relative path, avoiding
4078         # issues with msys/win32 path conversion for MSVC parameters
4079         # such as -Fo<file> or -out:<file>.
4080         TMPDIR=.
4081     ;;
4082     icl)
4083         cc_default="icl"
4084         ld_default="xilink"
4085         nm_default="dumpbin -symbols"
4086         ar_default="xilib"
4087         target_os_default="win32"
4088         TMPDIR=.
4089     ;;
4090     gcov)
4091         add_cflags  -fprofile-arcs -ftest-coverage
4092         add_ldflags -fprofile-arcs -ftest-coverage
4093     ;;
4094     llvm-cov)
4095         add_cflags -fprofile-arcs -ftest-coverage
4096         add_ldflags --coverage
4097     ;;
4098     hardened)
4099         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
4100         add_cflags   -fno-strict-overflow -fstack-protector-all
4101         add_ldflags  -Wl,-z,relro -Wl,-z,now
4102         add_cflags   -fPIE
4103         add_ldexeflags -fPIE -pie
4104     ;;
4105     ?*)
4106         die "Unknown toolchain $toolchain"
4107     ;;
4108 esac
4109
4110 if test -n "$cross_prefix"; then
4111     test -n "$arch" && test -n "$target_os" ||
4112         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
4113     enable cross_compile
4114 fi
4115
4116 ar_default="${cross_prefix}${ar_default}"
4117 cc_default="${cross_prefix}${cc_default}"
4118 cxx_default="${cross_prefix}${cxx_default}"
4119 nm_default="${cross_prefix}${nm_default}"
4120 pkg_config_default="${cross_prefix}${pkg_config_default}"
4121 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
4122     ranlib_default="${cross_prefix}${ranlib_default} -D"
4123 else
4124     ranlib_default="${cross_prefix}${ranlib_default}"
4125 fi
4126 strip_default="${cross_prefix}${strip_default}"
4127 windres_default="${cross_prefix}${windres_default}"
4128
4129 sysinclude_default="${sysroot}/usr/include"
4130
4131 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
4132     target_exec target_os x86asmexe nvcc
4133 enabled cross_compile || host_cc_default=$cc
4134 set_default host_cc
4135
4136 pkg_config_fail_message=""
4137 if ! $pkg_config --version >/dev/null 2>&1; then
4138     warn "$pkg_config not found, library detection may fail."
4139     pkg_config=false
4140 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
4141     pkg_config_fail_message="
4142 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
4143 fi
4144
4145 if test $doxygen != $doxygen_default && \
4146   ! $doxygen --version >/dev/null 2>&1; then
4147     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
4148 fi
4149
4150 exesuf() {
4151     case $1 in
4152         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
4153     esac
4154 }
4155
4156 EXESUF=$(exesuf $target_os)
4157 HOSTEXESUF=$(exesuf $host_os)
4158
4159 # set temporary file name
4160 : ${TMPDIR:=$TEMPDIR}
4161 : ${TMPDIR:=$TMP}
4162 : ${TMPDIR:=/tmp}
4163
4164 if [ -n "$tempprefix" ] ; then
4165     mktemp(){
4166         tmpname="$tempprefix.${HOSTNAME}.${UID}"
4167         echo "$tmpname"
4168         mkdir "$tmpname"
4169     }
4170 elif ! test_cmd mktemp -u XXXXXX; then
4171     # simple replacement for missing mktemp
4172     # NOT SAFE FOR GENERAL USE
4173     mktemp(){
4174         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
4175         echo "$tmpname"
4176         mkdir "$tmpname"
4177     }
4178 fi
4179
4180 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
4181     die "Unable to create temporary directory in $TMPDIR."
4182
4183 tmpfile(){
4184     tmp="${FFTMPDIR}/test"$2
4185     (set -C; exec > $tmp) 2> /dev/null ||
4186         die "Unable to create temporary file in $FFTMPDIR."
4187     eval $1=$tmp
4188 }
4189
4190 trap 'rm -rf -- "$FFTMPDIR"' EXIT
4191 trap 'exit 2' INT
4192
4193 tmpfile TMPASM .asm
4194 tmpfile TMPC   .c
4195 tmpfile TMPCPP .cpp
4196 tmpfile TMPE   $EXESUF
4197 tmpfile TMPH   .h
4198 tmpfile TMPM   .m
4199 tmpfile TMPO   .o
4200 tmpfile TMPS   .S
4201 tmpfile TMPSH  .sh
4202 tmpfile TMPV   .ver
4203
4204 unset -f mktemp
4205
4206 chmod +x $TMPE
4207
4208 # make sure we can execute files in $TMPDIR
4209 cat > $TMPSH 2>> $logfile <<EOF
4210 #! /bin/sh
4211 EOF
4212 chmod +x $TMPSH >> $logfile 2>&1
4213 if ! $TMPSH >> $logfile 2>&1; then
4214     cat <<EOF
4215 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
4216 variable to another directory and make sure that it is not mounted noexec.
4217 EOF
4218     die "Sanity test failed."
4219 fi
4220
4221 armasm_flags(){
4222     for flag; do
4223         case $flag in
4224             # Filter out MSVC cl.exe options from cflags that shouldn't
4225             # be passed to gas-preprocessor
4226             -M[TD]*)                                            ;;
4227             *)                  echo $flag                      ;;
4228         esac
4229    done
4230 }
4231
4232 cparser_flags(){
4233     for flag; do
4234         case $flag in
4235             -Wno-switch)             echo -Wno-switch-enum ;;
4236             -Wno-format-zero-length) ;;
4237             -Wdisabled-optimization) ;;
4238             -Wno-pointer-sign)       echo -Wno-other ;;
4239             *)                       echo $flag ;;
4240         esac
4241     done
4242 }
4243
4244 msvc_common_flags(){
4245     for flag; do
4246         case $flag in
4247             # In addition to specifying certain flags under the compiler
4248             # specific filters, they must be specified here as well or else the
4249             # generic catch all at the bottom will print the original flag.
4250             -Wall)                ;;
4251             -Wextra)              ;;
4252             -std=c99)             ;;
4253             # Common flags
4254             -fomit-frame-pointer) ;;
4255             -g)                   echo -Z7 ;;
4256             -fno-math-errno)      ;;
4257             -fno-common)          ;;
4258             -fno-signed-zeros)    ;;
4259             -fPIC)                ;;
4260             -mthumb)              ;;
4261             -march=*)             ;;
4262             -lz)                  echo zlib.lib ;;
4263             -lx264)               echo libx264.lib ;;
4264             -lstdc++)             ;;
4265             -l*)                  echo ${flag#-l}.lib ;;
4266             -LARGEADDRESSAWARE)   echo $flag ;;
4267             -L*)                  echo -libpath:${flag#-L} ;;
4268             *)                    echo $flag ;;
4269         esac
4270     done
4271 }
4272
4273 msvc_flags(){
4274     msvc_common_flags "$@"
4275     for flag; do
4276         case $flag in
4277             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4278                                        -wd4554 ;;
4279             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4280                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4281                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4282                                        -wd4307 \
4283                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4284         esac
4285     done
4286 }
4287
4288 icl_flags(){
4289     msvc_common_flags "$@"
4290     for flag; do
4291         case $flag in
4292             # Despite what Intel's documentation says -Wall, which is supported
4293             # on Windows, does enable remarks so disable them here.
4294             -Wall)                echo $flag -Qdiag-disable:remark ;;
4295             -std=c99)             echo -Qstd=c99 ;;
4296             -flto)                echo -ipo ;;
4297         esac
4298     done
4299 }
4300
4301 icc_flags(){
4302     for flag; do
4303         case $flag in
4304             -flto)                echo -ipo ;;
4305             *)                    echo $flag ;;
4306         esac
4307     done
4308 }
4309
4310 suncc_flags(){
4311     for flag; do
4312         case $flag in
4313             -march=*|-mcpu=*)
4314                 case "${flag#*=}" in
4315                     native)                   echo -xtarget=native       ;;
4316                     v9|niagara)               echo -xarch=sparc          ;;
4317                     ultrasparc)               echo -xarch=sparcvis       ;;
4318                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4319                     i586|pentium)             echo -xchip=pentium        ;;
4320                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4321                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4322                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4323                     pentium4*)          echo -xtarget=pentium4           ;;
4324                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4325                     *-sse3)             echo -xarch=sse3                 ;;
4326                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4327                     bonnell)                   echo -xarch=ssse3         ;;
4328                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4329                     westmere)                  echo -xtarget=westmere    ;;
4330                     silvermont)                echo -xarch=sse4_2        ;;
4331                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4332                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4333                                                echo -xarch=avx           ;;
4334                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4335                     btver1)                    echo -xarch=amdsse4a      ;;
4336                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4337                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4338                     k8|opteron|athlon64|athlon-fx)
4339                                                echo -xarch=sse2a         ;;
4340                     athlon*)                   echo -xarch=pentium_proa  ;;
4341                 esac
4342                 ;;
4343             -std=c99)             echo -xc99              ;;
4344             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4345             -fPIC)                echo -KPIC -xcode=pic32 ;;
4346             -W*,*)                echo $flag              ;;
4347             -f*-*|-W*|-mimpure-text)                      ;;
4348             -shared)              echo -G                 ;;
4349             *)                    echo $flag              ;;
4350         esac
4351     done
4352 }
4353
4354 probe_cc(){
4355     pfx=$1
4356     _cc=$2
4357     first=$3
4358
4359     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4360     unset _ld_o _ldflags _ld_lib _ld_path
4361     unset _depflags _DEPCMD _DEPFLAGS
4362     _flags_filter=echo
4363
4364     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4365         true # no-op to avoid reading stdin in following checks
4366     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4367         _type=llvm_gcc
4368         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4369         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4370         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4371         _cflags_speed='-O3'
4372         _cflags_size='-Os'
4373     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4374         _type=gcc
4375         gcc_version=$($_cc --version | head -n1)
4376         gcc_basever=$($_cc -dumpversion)
4377         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4378         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4379         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4380         case $gcc_basever in
4381             2) ;;
4382             2.*) ;;
4383             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4384         esac
4385         if [ "$first" = true ]; then
4386             case $gcc_basever in
4387                 4.2*)
4388                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4389             esac
4390         fi
4391         _cflags_speed='-O3'
4392         _cflags_size='-Os'
4393     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4394         _type=icc
4395         _ident=$($_cc --version | head -n1)
4396         _depflags='-MMD'
4397         _cflags_speed='-O3'
4398         _cflags_size='-Os'
4399         _cflags_noopt='-O1'
4400         _flags_filter=icc_flags
4401     elif $_cc -v 2>&1 | grep -q xlc; then
4402         _type=xlc
4403         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4404         _cflags_speed='-O5'
4405         _cflags_size='-O5 -qcompact'
4406     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4407         test -d "$sysroot" || die "No valid sysroot specified."
4408         _type=armcc
4409         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4410         armcc_conf="$PWD/armcc.conf"
4411         $_cc --arm_linux_configure                 \
4412              --arm_linux_config_file="$armcc_conf" \
4413              --configure_sysroot="$sysroot"        \
4414              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4415              die "Error creating armcc configuration file."
4416         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4417         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4418         as_default="${cross_prefix}gcc"
4419         _depflags='-MMD'
4420         _cflags_speed='-O3'
4421         _cflags_size='-Os'
4422     elif $_cc -v 2>&1 | grep -q clang && ! $_cc -? > /dev/null 2>&1; then
4423         _type=clang
4424         _ident=$($_cc --version 2>/dev/null | head -n1)
4425         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4426         _cflags_speed='-O3'
4427         _cflags_size='-Oz'
4428     elif $_cc -V 2>&1 | grep -q Sun; then
4429         _type=suncc
4430         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4431         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4432         _DEPFLAGS='-xM1 -xc99'
4433         _ldflags='-std=c99'
4434         _cflags_speed='-O5'
4435         _cflags_size='-O5 -xspace'
4436         _flags_filter=suncc_flags
4437     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4438         _type=pathscale
4439         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4440         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4441         _cflags_speed='-O2'
4442         _cflags_size='-Os'
4443         _flags_filter='filter_out -Wdisabled-optimization'
4444     elif $_cc -v 2>&1 | grep -q Open64; then
4445         _type=open64
4446         _ident=$($_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|-Wtype-limits|-fno-signed-zeros'
4451     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4452         _type=armasm
4453         _ident=$($_cc | head -n1)
4454         # 4509: "This form of conditional instruction is deprecated"
4455         _flags="-nologo -ignore 4509"
4456         _flags_filter=armasm_flags
4457     elif $_cc 2>&1 | grep -q Intel; then
4458         _type=icl
4459         _ident=$($_cc 2>&1 | head -n1)
4460         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4461         # Not only is O3 broken on 13.x+ but it is slower on all previous
4462         # versions (tested) as well.
4463         _cflags_speed="-O2"
4464         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4465         if $_cc 2>&1 | grep -q Linker; then
4466             _ld_o='-out:$@'
4467         else
4468             _ld_o='-Fe$@'
4469         fi
4470         _cc_o='-Fo$@'
4471         _cc_e='-P'
4472         _flags_filter=icl_flags
4473         _ld_lib='lib%.a'
4474         _ld_path='-libpath:'
4475         # -Qdiag-error to make icl error when seeing certain unknown arguments
4476         _flags='-nologo -Qdiag-error:4044,10157'
4477         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4478         # with MSVC which enables it by default.
4479         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4480         disable stripping
4481     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4482         # lld can emulate multiple different linkers; in ms link.exe mode,
4483         # the -? parameter gives the help output which contains an identifyable
4484         # string, while it gives an error in other modes.
4485         _type=lld-link
4486         # The link.exe mode doesn't have a switch for getting the version,
4487         # but we can force it back to gnu mode and get the version from there.
4488         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4489         _ld_o='-out:$@'
4490         _flags_filter=msvc_flags
4491         _ld_lib='lib%.a'
4492         _ld_path='-libpath:'
4493     elif $_cc -nologo- 2>&1 | grep -q Microsoft || { $_cc -v 2>&1 | grep -q clang && $_cc -? > /dev/null 2>&1; }; then
4494         _type=msvc
4495         _ident=$($_cc 2>&1 | head -n1 | tr -d '\r')
4496         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4497         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4498         _cflags_speed="-O2"
4499         _cflags_size="-O1"
4500         _cflags_noopt="-O1"
4501         if $_cc -nologo- 2>&1 | grep -q Linker; then
4502             _ld_o='-out:$@'
4503         else
4504             _ld_o='-Fe$@'
4505         fi
4506         _cc_o='-Fo$@'
4507         _cc_e='-P -Fi$@'
4508         _flags_filter=msvc_flags
4509         _ld_lib='lib%.a'
4510         _ld_path='-libpath:'
4511         _flags='-nologo'
4512         disable stripping
4513     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4514         _type=cparser
4515         _ident=$($_cc --version | head -n1)
4516         _depflags='-MMD'
4517         _cflags_speed='-O4'
4518         _cflags_size='-O2'
4519         _flags_filter=cparser_flags
4520     fi
4521
4522     eval ${pfx}_type=\$_type
4523     eval ${pfx}_ident=\$_ident
4524 }
4525
4526 set_ccvars(){
4527     eval ${1}_C=\${_cc_c-\${${1}_C}}
4528     eval ${1}_E=\${_cc_e-\${${1}_E}}
4529     eval ${1}_O=\${_cc_o-\${${1}_O}}
4530
4531     if [ -n "$_depflags" ]; then
4532         eval ${1}_DEPFLAGS=\$_depflags
4533     else
4534         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4535         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4536         eval DEP${1}FLAGS=\$_flags
4537     fi
4538 }
4539
4540 probe_cc cc "$cc" "true"
4541 cflags_filter=$_flags_filter
4542 cflags_speed=$_cflags_speed
4543 cflags_size=$_cflags_size
4544 cflags_noopt=$_cflags_noopt
4545 add_cflags $_flags $_cflags
4546 cc_ldflags=$_ldflags
4547 set_ccvars CC
4548 set_ccvars CXX
4549
4550 probe_cc hostcc "$host_cc"
4551 host_cflags_filter=$_flags_filter
4552 host_cflags_speed=$_cflags_speed
4553 add_host_cflags  $_flags $_cflags
4554 set_ccvars HOSTCC
4555
4556 test -n "$cc_type" && enable $cc_type ||
4557     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4558
4559 : ${as_default:=$cc}
4560 : ${objcc_default:=$cc}
4561 : ${dep_cc_default:=$cc}
4562 : ${ld_default:=$cc}
4563 : ${host_ld_default:=$host_cc}
4564 set_default ar as objcc dep_cc ld ln_s host_ld windres
4565
4566 probe_cc as "$as"
4567 asflags_filter=$_flags_filter
4568 add_asflags $_flags $_cflags
4569 set_ccvars AS
4570
4571 probe_cc objcc "$objcc"
4572 objcflags_filter=$_flags_filter
4573 add_objcflags $_flags $_cflags
4574 set_ccvars OBJC
4575
4576 probe_cc ld "$ld"
4577 ldflags_filter=$_flags_filter
4578 add_ldflags $_flags $_ldflags
4579 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4580 LD_O=${_ld_o-$LD_O}
4581 LD_LIB=${_ld_lib-$LD_LIB}
4582 LD_PATH=${_ld_path-$LD_PATH}
4583
4584 probe_cc hostld "$host_ld"
4585 host_ldflags_filter=$_flags_filter
4586 add_host_ldflags $_flags $_ldflags
4587 HOSTLD_O=${_ld_o-$HOSTLD_O}
4588
4589 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4590     probe_cc depcc "$dep_cc"
4591     CCDEP=${_DEPCMD:-$DEPCMD}
4592     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4593     DEPCCFLAGS=$_flags
4594 fi
4595
4596 if $ar 2>&1 | grep -q Microsoft; then
4597     arflags="-nologo"
4598     ar_o='-out:$@'
4599 elif $ar 2>&1 | grep -q "\[D\] "; then
4600     arflags="rcD"
4601     ar_o='$@'
4602 else
4603     arflags="rc"
4604     ar_o='$@'
4605 fi
4606
4607 add_cflags $extra_cflags
4608 add_cxxflags $extra_cxxflags
4609 add_objcflags $extra_objcflags
4610 add_asflags $extra_cflags
4611
4612 if test -n "$sysroot"; then
4613     case "$cc_type" in
4614         gcc|llvm_gcc|clang)
4615             add_cppflags --sysroot="$sysroot"
4616             add_ldflags --sysroot="$sysroot"
4617         ;;
4618     esac
4619 fi
4620
4621 if test "$cpu" = host; then
4622     enabled cross_compile &&
4623         die "--cpu=host makes no sense when cross-compiling."
4624
4625     case "$cc_type" in
4626         gcc|llvm_gcc)
4627             check_native(){
4628                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4629                 sed -n "/cc1.*$1=/{
4630                             s/.*$1=\\([^ ]*\\).*/\\1/
4631                             p
4632                             q
4633                         }" $TMPE
4634             }
4635             cpu=$(check_native -march || check_native -mcpu)
4636         ;;
4637         clang)
4638             check_native(){
4639                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4640                 sed -n "/cc1.*-target-cpu /{
4641                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4642                             p
4643                             q
4644                         }" $TMPE
4645             }
4646             cpu=$(check_native -march)
4647         ;;
4648     esac
4649
4650     test "${cpu:-host}" = host &&
4651         die "--cpu=host not supported with compiler $cc"
4652 fi
4653
4654 # Deal with common $arch aliases
4655 case "$arch" in
4656     aarch64|arm64)
4657         arch="aarch64"
4658     ;;
4659     arm*|iPad*|iPhone*)
4660         arch="arm"
4661     ;;
4662     mips*|IP*)
4663         case "$arch" in
4664         *el)
4665             add_cppflags -EL
4666             add_ldflags -EL
4667         ;;
4668         *eb)
4669             add_cppflags -EB
4670             add_ldflags -EB
4671         ;;
4672         esac
4673         arch="mips"
4674     ;;
4675     parisc*|hppa*)
4676         arch="parisc"
4677     ;;
4678     "Power Macintosh"|ppc*|powerpc*)
4679         arch="ppc"
4680     ;;
4681     s390|s390x)
4682         arch="s390"
4683     ;;
4684     sh4|sh)
4685         arch="sh4"
4686     ;;
4687     sun4*|sparc*)
4688         arch="sparc"
4689     ;;
4690     tilegx|tile-gx)
4691         arch="tilegx"
4692     ;;
4693     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4694         arch="x86"
4695     ;;
4696 esac
4697
4698 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4699 enable $arch
4700
4701 # Add processor-specific flags
4702 if enabled aarch64; then
4703
4704     case $cpu in
4705         armv*)
4706             cpuflags="-march=$cpu"
4707         ;;
4708         *)
4709             cpuflags="-mcpu=$cpu"
4710         ;;
4711     esac
4712
4713 elif enabled alpha; then
4714
4715     cpuflags="-mcpu=$cpu"
4716
4717 elif enabled arm; then
4718
4719     check_arm_arch() {
4720         test_cpp_condition stddef.h \
4721             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4722             $cpuflags
4723     }
4724
4725     probe_arm_arch() {
4726         if   check_arm_arch 4;        then echo armv4
4727         elif check_arm_arch 4T;       then echo armv4t
4728         elif check_arm_arch 5;        then echo armv5
4729         elif check_arm_arch 5E;       then echo armv5e
4730         elif check_arm_arch 5T;       then echo armv5t
4731         elif check_arm_arch 5TE;      then echo armv5te
4732         elif check_arm_arch 5TEJ;     then echo armv5te
4733         elif check_arm_arch 6;        then echo armv6
4734         elif check_arm_arch 6J;       then echo armv6j
4735         elif check_arm_arch 6K;       then echo armv6k
4736         elif check_arm_arch 6Z;       then echo armv6z
4737         elif check_arm_arch 6KZ;      then echo armv6zk
4738         elif check_arm_arch 6ZK;      then echo armv6zk
4739         elif check_arm_arch 6T2;      then echo armv6t2
4740         elif check_arm_arch 7;        then echo armv7
4741         elif check_arm_arch 7A  7_A;  then echo armv7-a
4742         elif check_arm_arch 7S;       then echo armv7-a
4743         elif check_arm_arch 7R  7_R;  then echo armv7-r
4744         elif check_arm_arch 7M  7_M;  then echo armv7-m
4745         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4746         elif check_arm_arch 8A  8_A;  then echo armv8-a
4747         fi
4748     }
4749
4750     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4751
4752     case $cpu in
4753         armv*)
4754             cpuflags="-march=$cpu"
4755             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4756         ;;
4757         *)
4758             cpuflags="-mcpu=$cpu"
4759             case $cpu in
4760                 cortex-a*)                               subarch=armv7a  ;;
4761                 cortex-r*)                               subarch=armv7r  ;;
4762                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4763                 arm11*)                                  subarch=armv6   ;;
4764                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4765                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4766                 *)                             subarch=$(probe_arm_arch) ;;
4767             esac
4768         ;;
4769     esac
4770
4771     case "$subarch" in
4772         armv5t*)    enable fast_clz                ;;
4773         armv[6-8]*)
4774             enable fast_clz
4775             disabled fast_unaligned || enable fast_unaligned
4776             ;;
4777     esac
4778
4779 elif enabled avr32; then
4780
4781     case $cpu in
4782         ap7[02]0[0-2])
4783             subarch="avr32_ap"
4784             cpuflags="-mpart=$cpu"
4785         ;;
4786         ap)
4787             subarch="avr32_ap"
4788             cpuflags="-march=$cpu"
4789         ;;
4790         uc3[ab]*)
4791             subarch="avr32_uc"
4792             cpuflags="-mcpu=$cpu"
4793         ;;
4794         uc)
4795             subarch="avr32_uc"
4796             cpuflags="-march=$cpu"
4797         ;;
4798     esac
4799
4800 elif enabled bfin; then
4801
4802     cpuflags="-mcpu=$cpu"
4803
4804 elif enabled mips; then
4805
4806     cpuflags="-march=$cpu"
4807
4808     if [ "$cpu" != "generic" ]; then
4809         disable mips32r2
4810         disable mips32r5
4811         disable mips64r2
4812         disable mips32r6
4813         disable mips64r6
4814         disable loongson2
4815         disable loongson3
4816
4817         case $cpu in
4818             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4819                 enable mips32r2
4820                 disable msa
4821             ;;
4822             p5600|i6400|p6600)
4823                 disable mipsdsp
4824                 disable mipsdspr2
4825             ;;
4826             loongson*)
4827                 enable loongson2
4828                 enable loongson3
4829                 enable local_aligned
4830                 enable simd_align_16
4831                 enable fast_64bit
4832                 enable fast_clz
4833                 enable fast_cmov
4834                 enable fast_unaligned
4835                 disable aligned_stack
4836                 disable mipsfpu
4837                 disable mipsdsp
4838                 disable mipsdspr2
4839                 # When gcc version less than 5.3.0, add -fno-expensive-optimizations flag.
4840                 if [ $cc == gcc ]; then
4841                     gcc_version=$(gcc -dumpversion)
4842                     if [ "$(echo "$gcc_version 5.3.0" | tr " " "\n" | sort -rV | head -n 1)" == "$gcc_version" ]; then
4843                         expensive_optimization_flag=""
4844                     else
4845                         expensive_optimization_flag="-fno-expensive-optimizations"
4846                     fi
4847                 fi
4848                 case $cpu in
4849                     loongson3*)
4850                         cpuflags="-march=loongson3a -mhard-float $expensive_optimization_flag"
4851                     ;;
4852                     loongson2e)
4853                         cpuflags="-march=loongson2e -mhard-float $expensive_optimization_flag"
4854                     ;;
4855                     loongson2f)
4856                         cpuflags="-march=loongson2f -mhard-float $expensive_optimization_flag"
4857                     ;;
4858                 esac
4859             ;;
4860             *)
4861                 # Unknown CPU. Disable everything.
4862                 warn "unknown CPU. Disabling all MIPS optimizations."
4863                 disable mipsfpu
4864                 disable mipsdsp
4865                 disable mipsdspr2
4866                 disable msa
4867                 disable mmi
4868             ;;
4869         esac
4870
4871         case $cpu in
4872             24kc)
4873                 disable mipsfpu
4874                 disable mipsdsp
4875                 disable mipsdspr2
4876             ;;
4877             24kf*)
4878                 disable mipsdsp
4879                 disable mipsdspr2
4880             ;;
4881             24kec|34kc|1004kc)
4882                 disable mipsfpu
4883                 disable mipsdspr2
4884             ;;
4885             24kef*|34kf*|1004kf*)
4886                 disable mipsdspr2
4887             ;;
4888             74kc)
4889                 disable mipsfpu
4890             ;;
4891             p5600)
4892                 enable mips32r5
4893                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4894             ;;
4895             i6400)
4896                 enable mips64r6
4897                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4898             ;;
4899             p6600)
4900                 enable mips64r6
4901                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4902             ;;
4903         esac
4904     else
4905         # We do not disable anything. Is up to the user to disable the unwanted features.
4906         warn 'generic cpu selected'
4907     fi
4908
4909 elif enabled ppc; then
4910
4911     disable ldbrx
4912
4913     case $(tolower $cpu) in
4914         601|ppc601|powerpc601)
4915             cpuflags="-mcpu=601"
4916             disable altivec
4917         ;;
4918         603*|ppc603*|powerpc603*)
4919             cpuflags="-mcpu=603"
4920             disable altivec
4921         ;;
4922         604*|ppc604*|powerpc604*)
4923             cpuflags="-mcpu=604"
4924             disable altivec
4925         ;;
4926         g3|75*|ppc75*|powerpc75*)
4927             cpuflags="-mcpu=750"
4928             disable altivec
4929         ;;
4930         g4|745*|ppc745*|powerpc745*)
4931             cpuflags="-mcpu=7450"
4932             disable vsx
4933         ;;
4934         74*|ppc74*|powerpc74*)
4935             cpuflags="-mcpu=7400"
4936             disable vsx
4937         ;;
4938         g5|970|ppc970|powerpc970)
4939             cpuflags="-mcpu=970"
4940             disable vsx
4941         ;;
4942         power[3-6]*)
4943             cpuflags="-mcpu=$cpu"
4944             disable vsx
4945         ;;
4946         power[7-8]*)
4947             cpuflags="-mcpu=$cpu"
4948         ;;
4949         cell)
4950             cpuflags="-mcpu=cell"
4951             enable ldbrx
4952             disable vsx
4953         ;;
4954         e500mc)
4955             cpuflags="-mcpu=e500mc"
4956             disable altivec
4957         ;;
4958         e500v2)
4959             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4960             disable altivec
4961             disable dcbzl
4962         ;;
4963         e500)
4964             cpuflags="-mcpu=8540 -mhard-float"
4965             disable altivec
4966             disable dcbzl
4967         ;;
4968     esac
4969
4970 elif enabled sparc; then
4971
4972     case $cpu in
4973         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4974             cpuflags="-mcpu=$cpu"
4975         ;;
4976         ultrasparc*|niagara[234])
4977             cpuflags="-mcpu=$cpu"
4978         ;;
4979     esac
4980
4981 elif enabled x86; then
4982
4983     case $cpu in
4984         i[345]86|pentium)
4985             cpuflags="-march=$cpu"
4986             disable i686
4987             disable mmx
4988         ;;
4989         # targets that do NOT support nopl and conditional mov (cmov)
4990         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4991             cpuflags="-march=$cpu"
4992             disable i686
4993         ;;
4994         # targets that do support nopl and conditional mov (cmov)
4995         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4996         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4997         |amdfam10|barcelona|b[dt]ver*|znver*)
4998             cpuflags="-march=$cpu"
4999             enable i686
5000             enable fast_cmov
5001         ;;
5002         # targets that do support conditional mov but on which it's slow
5003         pentium4|pentium4m|prescott|nocona)
5004             cpuflags="-march=$cpu"
5005             enable i686
5006             disable fast_cmov
5007         ;;
5008     esac
5009
5010 fi
5011
5012 if [ "$cpu" != generic ]; then
5013     add_cflags  $cpuflags
5014     add_asflags $cpuflags
5015     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
5016 fi
5017
5018 # compiler sanity check
5019 test_exec <<EOF
5020 int main(void){ return 0; }
5021 EOF
5022 if test "$?" != 0; then
5023     echo "$cc is unable to create an executable file."
5024     if test -z "$cross_prefix" && ! enabled cross_compile ; then
5025         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
5026         echo "Only do this if you know what cross compiling means."
5027     fi
5028     die "C compiler test failed."
5029 fi
5030
5031 add_cppflags -D_ISOC99_SOURCE
5032 add_cxxflags -D__STDC_CONSTANT_MACROS
5033 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
5034
5035 # some compilers silently accept -std=c11, so we also need to check that the
5036 # version macro is defined properly
5037 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
5038     add_cflags -std=c11 ||
5039     check_cflags -std=c99
5040
5041 check_cppflags -D_FILE_OFFSET_BITS=64
5042 check_cppflags -D_LARGEFILE_SOURCE
5043
5044 add_host_cppflags -D_ISOC99_SOURCE
5045 check_host_cflags -std=c99
5046 check_host_cflags -Wall
5047 check_host_cflags $host_cflags_speed
5048
5049 check_64bit(){
5050     arch32=$1
5051     arch64=$2
5052     expr=${3:-'sizeof(void *) > 4'}
5053     test_code cc "" "int test[2*($expr) - 1]" &&
5054         subarch=$arch64 || subarch=$arch32
5055     enable $subarch
5056 }
5057
5058 case "$arch" in
5059     aarch64|alpha|ia64)
5060         enabled shared && enable_weak pic
5061     ;;
5062     mips)
5063         check_64bit mips mips64 '_MIPS_SIM > 1'
5064         enabled shared && enable_weak pic
5065     ;;
5066     parisc)
5067         check_64bit parisc parisc64
5068         enabled shared && enable_weak pic
5069     ;;
5070     ppc)
5071         check_64bit ppc ppc64
5072         enabled shared && enable_weak pic
5073     ;;
5074     s390)
5075         check_64bit s390 s390x
5076         enabled shared && enable_weak pic
5077     ;;
5078     sparc)
5079         check_64bit sparc sparc64
5080         enabled shared && enable_weak pic
5081     ;;
5082     x86)
5083         check_64bit x86_32 x86_64
5084         # Treat x32 as x64 for now. Note it also needs pic if shared
5085         test "$subarch" = "x86_32" && test_cpp_condition stddef.h 'defined(__x86_64__)' &&
5086             subarch=x86_64 && enable x86_64 && disable x86_32
5087         if enabled x86_64; then
5088             enabled shared && enable_weak pic
5089             objformat=elf64
5090         fi
5091     ;;
5092 esac
5093
5094 # OS specific
5095 case $target_os in
5096     aix)
5097         SHFLAGS=-shared
5098         add_cppflags '-I\$(SRC_PATH)/compat/aix'
5099         enabled shared && add_ldflags -Wl,-brtl
5100         arflags='-Xany -r -c'
5101         striptype=""
5102         ;;
5103     android)
5104         disable symver
5105         enable section_data_rel_ro
5106         add_cflags -fPIE
5107         add_ldexeflags -fPIE -pie
5108         SLIB_INSTALL_NAME='$(SLIBNAME)'
5109         SLIB_INSTALL_LINKS=
5110         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
5111         ;;
5112     haiku)
5113         prefix_default="/boot/common"
5114         network_extralibs="-lnetwork"
5115         host_extralibs=
5116         ;;
5117     sunos)
5118         SHFLAGS='-shared -Wl,-h,$$(@F)'
5119         enabled x86 && append SHFLAGS -mimpure-text
5120         network_extralibs="-lsocket -lnsl"
5121         add_cppflags -D__EXTENSIONS__
5122         # When using suncc to build, the Solaris linker will mark
5123         # an executable with each instruction set encountered by
5124         # the Solaris assembler.  As our libraries contain their own
5125         # guards for processor-specific code, instead suppress
5126         # generation of the HWCAPS ELF section on Solaris x86 only.
5127         enabled_all suncc x86 &&
5128             echo "hwcap_1 = OVERRIDE;" > mapfile &&
5129             add_ldflags -Wl,-M,mapfile
5130         nm_default='nm -P -g'
5131         version_script='-M'
5132         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
5133         ;;
5134     netbsd)
5135         disable symver
5136         oss_indev_extralibs="-lossaudio"
5137         oss_outdev_extralibs="-lossaudio"
5138         enabled gcc || check_ldflags -Wl,-zmuldefs
5139         ;;
5140     openbsd|bitrig)
5141         disable symver
5142         striptype=""
5143         SHFLAGS='-shared'
5144         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
5145         SLIB_INSTALL_LINKS=
5146         oss_indev_extralibs="-lossaudio"
5147         oss_outdev_extralibs="-lossaudio"
5148         ;;
5149     dragonfly)
5150         disable symver
5151         ;;
5152     freebsd)
5153         ;;
5154     bsd/os)
5155         add_extralibs -lpoll -lgnugetopt
5156         strip="strip -d"
5157         ;;
5158     darwin)
5159         enabled ppc && add_asflags -force_cpusubtype_ALL
5160         install_name_dir_default='$(SHLIBDIR)'
5161         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
5162         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
5163         strip="${strip} -x"
5164         add_ldflags -Wl,-dynamic,-search_paths_first
5165         check_cflags -Werror=partial-availability
5166         SLIBSUF=".dylib"
5167         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
5168         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
5169         enabled x86_64 && objformat="macho64" || objformat="macho32"
5170         enabled_any pic shared x86_64 ||
5171             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
5172         check_headers dispatch/dispatch.h &&
5173             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
5174         if test -n "$sysroot"; then
5175             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
5176             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
5177         fi
5178         version_script='-exported_symbols_list'
5179         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
5180         ;;
5181     msys*)
5182         die "Native MSYS builds are discouraged, please use the MINGW environment."
5183         ;;
5184     mingw32*|mingw64*)
5185         target_os=mingw32
5186         LIBTARGET=i386
5187         if enabled x86_64; then
5188             LIBTARGET="i386:x86-64"
5189         elif enabled arm; then
5190             LIBTARGET="arm"
5191         elif enabled aarch64; then
5192             LIBTARGET="arm64"
5193         fi
5194         if enabled shared; then
5195             # Cannot build both shared and static libs when using dllimport.
5196             disable static
5197         fi
5198         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5199         enabled x86_32 && check_ldflags -Wl,--large-address-aware
5200         shlibdir_default="$bindir_default"
5201         SLIBPREF=""
5202         SLIBSUF=".dll"
5203         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5204         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5205         if test_cmd lib.exe -list; then
5206             SLIB_EXTRA_CMD=-'lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5207             if enabled x86_64; then
5208                 LIBTARGET=x64
5209             fi
5210         else
5211             SLIB_EXTRA_CMD=-'$(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
5212         fi
5213         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5214         SLIB_INSTALL_LINKS=
5215         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5216         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5217         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5218         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--disable-auto-image-base $$(@:$(SLIBSUF)=.def)'
5219         enabled x86_64 && objformat="win64" || objformat="win32"
5220         dlltool="${cross_prefix}dlltool"
5221         ranlib=:
5222         enable dos_paths
5223         check_ldflags -Wl,--nxcompat,--dynamicbase
5224         # Lets work around some stupidity in binutils.
5225         # ld will strip relocations from executables even though we need them
5226         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
5227         # however ld then forgets what the entry point should be (oops) so we
5228         # have to manually (re)set it.
5229         if enabled x86_32; then
5230             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
5231         elif enabled x86_64; then
5232             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
5233             check_ldflags -Wl,--high-entropy-va # binutils 2.25
5234             # Set image base >4GB for extra entropy with HEASLR
5235             add_ldexeflags -Wl,--image-base,0x140000000
5236             append SHFLAGS -Wl,--image-base,0x180000000
5237         fi
5238         ;;
5239     win32|win64)
5240         disable symver
5241         if enabled shared; then
5242             # Link to the import library instead of the normal static library
5243             # for shared libs.
5244             LD_LIB='%.lib'
5245             # Cannot build both shared and static libs with MSVC or icl.
5246             disable static
5247         fi
5248         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
5249         shlibdir_default="$bindir_default"
5250         SLIBPREF=""
5251         SLIBSUF=".dll"
5252         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5253         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5254         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5255         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5256         SLIB_INSTALL_LINKS=
5257         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5258         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5259         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5260         enabled x86_64 && objformat="win64" || objformat="win32"
5261         ranlib=:
5262         enable dos_paths
5263         ;;
5264     cygwin*)
5265         target_os=cygwin
5266         shlibdir_default="$bindir_default"
5267         SLIBPREF="cyg"
5268         SLIBSUF=".dll"
5269         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5270         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5271         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5272         SLIB_INSTALL_LINKS=
5273         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5274         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5275         enabled x86_64 && objformat="win64" || objformat="win32"
5276         enable dos_paths
5277         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5278         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5279         ;;
5280     *-dos|freedos|opendos)
5281         network_extralibs="-lsocket"
5282         objformat="coff"
5283         enable dos_paths
5284         add_cppflags -U__STRICT_ANSI__
5285         ;;
5286     linux)
5287         enable section_data_rel_ro
5288         enabled_any arm aarch64 && enable_weak linux_perf
5289         ;;
5290     irix*)
5291         target_os=irix
5292         ranlib="echo ignoring ranlib"
5293         ;;
5294     os/2*)
5295         strip="lxlite -CS"
5296         striptype=""
5297         objformat="aout"
5298         add_cppflags -D_GNU_SOURCE
5299         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5300         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5301         LIBSUF="_s.a"
5302         SLIBPREF=""
5303         SLIBSUF=".dll"
5304         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5305         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5306         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5307             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5308             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5309             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5310             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5311         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5312             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5313         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5314         SLIB_INSTALL_LINKS=
5315         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5316         enable dos_paths
5317         enable_weak os2threads
5318         ;;
5319     gnu/kfreebsd)
5320         add_cppflags -D_BSD_SOURCE
5321         ;;
5322     gnu)
5323         ;;
5324     qnx)
5325         add_cppflags -D_QNX_SOURCE
5326         network_extralibs="-lsocket"
5327         ;;
5328     symbian)
5329         SLIBSUF=".dll"
5330         enable dos_paths
5331         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5332         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5333         add_ldflags -Wl,--target1-abs,--no-undefined \
5334                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5335                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5336         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5337                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5338                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5339         ;;
5340     minix)
5341         ;;
5342     none)
5343         ;;
5344     *)
5345         die "Unknown OS '$target_os'."
5346         ;;
5347 esac
5348
5349 # test if creating links works
5350 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5351 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5352 mkdir "$link_dest"
5353 $ln_s "$link_dest" "$link_name"
5354 touch "$link_dest/test_file"
5355 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5356     # create link to source path
5357     [ -e src ] && rm src
5358     $ln_s "$source_path" src
5359     source_link=src
5360 else
5361     # creating directory links doesn't work
5362     # fall back to using the full source path
5363     source_link="$source_path"
5364 fi
5365 # cleanup
5366 rm -r "$link_dest"
5367 rm -r "$link_name"
5368
5369 # determine libc flavour
5370
5371 probe_libc(){
5372     pfx=$1
5373     pfx_no_=${pfx%_}
5374     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5375     if test_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5376         eval ${pfx}libc_type=uclibc
5377         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5378     elif test_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5379         eval ${pfx}libc_type=glibc
5380         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5381     # MinGW headers can be installed on Cygwin, so check for newlib first.
5382     elif test_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5383         eval ${pfx}libc_type=newlib
5384         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5385     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5386     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5387         eval ${pfx}libc_type=mingw64
5388         if test_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5389             add_compat msvcrt/snprintf.o
5390             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5391         fi
5392         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5393         eval test \$${pfx_no_}cc_type = "gcc" &&
5394             add_${pfx}cppflags -D__printf__=__gnu_printf__
5395         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5396             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5397     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5398          test_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5399         eval ${pfx}libc_type=mingw32
5400         test_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5401             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5402             die "ERROR: MinGW32 runtime version must be >= 3.15."
5403         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5404         test_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5405             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5406         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5407             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5408         eval test \$${pfx_no_}cc_type = "gcc" &&
5409             add_${pfx}cppflags -D__printf__=__gnu_printf__
5410     elif test_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5411         eval ${pfx}libc_type=msvcrt
5412         if test_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5413             if [ "$pfx" = host_ ]; then
5414                 add_host_cppflags -Dsnprintf=_snprintf
5415             else
5416                 add_compat strtod.o strtod=avpriv_strtod
5417                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5418                                              _snprintf=avpriv_snprintf  \
5419                                              vsnprintf=avpriv_vsnprintf
5420             fi
5421         fi
5422         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5423         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5424         # 0x601 by default unless something else is set by the user.
5425         # This can easily lead to us detecting functions only present
5426         # in such new versions and producing binaries requiring windows 7.0.
5427         # Therefore explicitly set the default to Vista unless the user has
5428         # set something else on the command line.
5429         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5430         # family. For these cases, configure is free to use any functions
5431         # found in the SDK headers by default. (Alternatively, we could force
5432         # _WIN32_WINNT to 0x0602 in that case.)
5433         test_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5434             { test_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0600; }
5435 #ifdef WINAPI_FAMILY
5436 #include <winapifamily.h>
5437 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5438 #error not desktop
5439 #endif
5440 #endif
5441 EOF
5442         if [ "$pfx" = "" ]; then
5443             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5444             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5445         fi
5446     elif test_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5447         eval ${pfx}libc_type=klibc
5448     elif test_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5449         eval ${pfx}libc_type=bionic
5450     elif test_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5451         eval ${pfx}libc_type=solaris
5452         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5453     fi
5454     test_${pfx}cc <<EOF
5455 #include <time.h>
5456 void *v = localtime_r;
5457 EOF
5458 test "$?" != 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
5459 #include <time.h>
5460 void *v = localtime_r;
5461 EOF
5462
5463     eval test -n "\${${pfx}libc_type}" && enable ${pfx}libc_${libc_type}
5464 }
5465
5466 probe_libc
5467 probe_libc host_
5468
5469 # hacks for compiler/libc/os combinations
5470
5471 case $libc_type in
5472     bionic)
5473         add_compat strtod.o strtod=avpriv_strtod
5474         ;;
5475 esac
5476
5477 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5478     add_cppflags '-I\$(SRC_PATH)/compat/float'
5479
5480 test_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5481
5482 set_default libdir
5483 : ${shlibdir_default:="$libdir"}
5484 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5485
5486 set_default $PATHS_LIST
5487 set_default nm
5488
5489 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5490
5491 enable_weak_pic() {
5492     disabled pic && return
5493     enable pic
5494     add_cppflags -DPIC
5495     case "$target_os" in
5496     mingw*|cygwin*|win*)
5497         ;;
5498     *)
5499         add_cflags -fPIC
5500         add_asflags -fPIC
5501         ;;
5502     esac
5503 }
5504
5505 enabled pic && enable_weak_pic
5506
5507 test_cc <<EOF || die "Symbol mangling check failed."
5508 int ff_extern;
5509 EOF
5510 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5511 extern_prefix=${sym%%ff_extern*}
5512
5513 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
5514
5515 for restrict_keyword in restrict __restrict__ __restrict ""; do
5516     test_code cc "" "char * $restrict_keyword p" && break
5517 done
5518
5519 check_cc pragma_deprecated "" '_Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"")'
5520
5521 # The global variable ensures the bits appear unchanged in the object file.
5522 test_cc <<EOF || die "endian test failed"
5523 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5524 EOF
5525 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5526
5527 check_cc const_nan math.h "struct { double d; } static const bar[] = { { NAN } }"
5528
5529 if ! enabled ppc64 || enabled bigendian; then
5530     disable vsx
5531 fi
5532
5533 check_gas() {
5534     log "check_gas using '$as' as AS"
5535     # :vararg is used on aarch64, arm and ppc altivec
5536     check_as vararg "
5537 .macro m n, y:vararg=0
5538 \n: .int \y
5539 .endm
5540 m x" || return 1
5541     # .altmacro is only used in arm asm
5542     ! enabled arm || check_as gnu_as ".altmacro"
5543 }
5544
5545 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5546     nogas=:
5547     enabled_any arm aarch64 && nogas=die
5548     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5549     as_noop=-v
5550
5551     case $as_type in
5552         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5553         gcc)  gaspp_as_type=gas ;;
5554         *)    gaspp_as_type=$as_type ;;
5555     esac
5556
5557     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5558
5559     test "${as#*gas-preprocessor.pl}" != "$as" ||
5560     test_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5561         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5562
5563     if ! check_gas ; then
5564         as=${gas:=$as}
5565         check_gas || \
5566             $nogas "GNU assembler not found, install/update gas-preprocessor"
5567     fi
5568
5569     check_as as_func ".func test
5570                       .endfunc"
5571 fi
5572
5573 check_inline_asm inline_asm_labels '"1:\n"'
5574
5575 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5576
5577 if enabled aarch64; then
5578     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5579     # internal assembler in clang 3.3 does not support this instruction
5580     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5581     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5582
5583     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5584
5585 elif enabled alpha; then
5586
5587     check_cflags -mieee
5588
5589 elif enabled arm; then
5590
5591     enabled msvc && check_cpp_condition thumb stddef.h "defined _M_ARMT"
5592     test_cpp_condition stddef.h "defined __thumb__" && test_cc <<EOF && enable_weak thumb
5593 float func(float a, float b){ return a+b; }
5594 EOF
5595     enabled thumb && check_cflags -mthumb || check_cflags -marm
5596
5597     if check_cpp_condition vfp_args stddef.h "defined __ARM_PCS_VFP"; then
5598         :
5599     elif check_cpp_condition vfp_args stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5600         :
5601     elif ! test_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5602         case "${cross_prefix:-$cc}" in
5603             *hardfloat*) enable vfp_args; fpabi=vfp ;;
5604             *) check_ld "cc" vfp_args <<EOF && fpabi=vfp || fpabi=soft ;;
5605 __asm__ (".eabi_attribute 28, 1");
5606 int main(void) { return 0; }
5607 EOF
5608         esac
5609         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5610     fi
5611
5612     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5613     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5614     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5615     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5616     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5617     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5618     enabled setend  && check_insn setend  'setend be'
5619
5620     [ $target_os = linux ] || [ $target_os = android ] ||
5621         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5622             $ARCH_EXT_LIST_ARM
5623
5624     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5625
5626     check_as as_arch_directive ".arch armv7-a"
5627     check_as as_dn_directive   "ra .dn d0.i16"
5628     check_as as_fpu_directive  ".fpu neon"
5629
5630     # llvm's integrated assembler supports .object_arch from llvm 3.5
5631     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5632         check_as as_object_arch ".object_arch armv4"
5633
5634     # MS armasm fails to assemble our PIC constructs
5635     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5636
5637 elif enabled mips; then
5638
5639     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5640     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5641     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5642
5643     # Enable minimum ISA based on selected options
5644     if enabled mips64; then
5645         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5646         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5647         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5648     else
5649         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5650         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5651         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5652         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5653     fi
5654
5655     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5656     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5657     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_headers msa.h || disable msa
5658     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5659     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5660
5661     if enabled bigendian && enabled msa; then
5662         disable msa
5663     fi
5664
5665 elif enabled parisc; then
5666
5667     if enabled gcc; then
5668         case $($cc -dumpversion) in
5669             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5670         esac
5671     fi
5672
5673 elif enabled ppc; then
5674
5675     enable local_aligned
5676
5677     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5678     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5679     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5680     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5681
5682     if enabled altivec; then
5683         check_cflags -maltivec -mabi=altivec
5684
5685         # check if our compiler supports Motorola AltiVec C API
5686         check_cc altivec altivec.h "vector signed int v1 = (vector signed int) { 0 };
5687                                     vector signed int v2 = (vector signed int) { 1 };
5688                                     v1 = vec_add(v1, v2);"
5689
5690         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5691     fi
5692
5693     if enabled vsx; then
5694         check_cflags -mvsx &&
5695         check_cc vsx altivec.h "int v[4] = { 0 };
5696                                 vector signed int v1 = vec_vsx_ld(0, v);"
5697     fi
5698
5699     if enabled power8; then
5700         check_cpp_condition power8 "altivec.h" "defined(_ARCH_PWR8)"
5701     fi
5702
5703 elif enabled x86; then
5704
5705     check_builtin rdtsc    intrin.h   "__rdtsc()"
5706     check_builtin mm_empty mmintrin.h "_mm_empty()"
5707
5708     enable local_aligned
5709
5710     # check whether EBP is available on x86
5711     # As 'i' is stored on the stack, this program will crash
5712     # if the base pointer is used to access it because the
5713     # base pointer is cleared in the inline assembly code.
5714     check_exec_crash <<EOF && enable ebp_available
5715 volatile int i=0;
5716 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5717 return i;
5718 EOF
5719
5720     # check whether EBX is available on x86
5721     check_inline_asm ebx_available '""::"b"(0)' &&
5722         check_inline_asm ebx_available '"":::"%ebx"'
5723
5724     # check whether xmm clobbers are supported
5725     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5726
5727     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5728         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5729
5730     # check whether binutils is new enough to compile SSSE3/MMXEXT
5731     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5732     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5733
5734     probe_x86asm(){
5735         x86asmexe_probe=$1
5736         if test_cmd $x86asmexe_probe -v; then
5737             x86asmexe=$x86asmexe_probe
5738             x86asm_type=nasm
5739             x86asm_debug="-g -F dwarf"
5740             X86ASMDEP=
5741             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5742         elif test_cmd $x86asmexe_probe --version; then
5743             x86asmexe=$x86asmexe_probe
5744             x86asm_type=yasm
5745             x86asm_debug="-g dwarf2"
5746             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
5747             X86ASM_DEPFLAGS=
5748         fi
5749         check_x86asm x86asm "movbe ecx, [5]"
5750     }
5751
5752     if ! disabled_any asm mmx x86asm; then
5753         disable x86asm
5754         for program in $x86asmexe nasm yasm; do
5755             probe_x86asm $program && break
5756         done
5757         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
5758         X86ASMFLAGS="-f $objformat"
5759         enabled pic               && append X86ASMFLAGS "-DPIC"
5760         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
5761         case "$objformat" in
5762             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
5763         esac
5764
5765         check_x86asm avx512_external "vmovdqa32 [eax]{k1}{z}, zmm0"
5766         check_x86asm avx2_external   "vextracti128 xmm0, ymm0, 0"
5767         check_x86asm xop_external    "vpmacsdd xmm0, xmm1, xmm2, xmm3"
5768         check_x86asm fma4_external   "vfmaddps ymm0, ymm1, ymm2, ymm3"
5769         check_x86asm cpunop          "CPU amdnop"
5770     fi
5771
5772     case "$cpu" in
5773         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5774             disable fast_clz
5775         ;;
5776     esac
5777
5778 fi
5779
5780 check_cc intrinsics_neon arm_neon.h "int16x8_t test = vdupq_n_s16(0)"
5781
5782 check_ldflags -Wl,--as-needed
5783 check_ldflags -Wl,-z,noexecstack
5784
5785 if ! disabled network; then
5786     check_func getaddrinfo $network_extralibs
5787     check_func inet_aton $network_extralibs
5788
5789     check_type netdb.h "struct addrinfo"
5790     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5791     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5792     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5793     check_type poll.h "struct pollfd"
5794     check_type netinet/sctp.h "struct sctp_event_subscribe"
5795     check_struct "sys/socket.h" "struct msghdr" msg_flags
5796     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5797     check_type netinet/in.h "struct sockaddr_in6"
5798     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5799     check_type "sys/types.h sys/socket.h" socklen_t
5800
5801     # Prefer arpa/inet.h over winsock2
5802     if check_headers arpa/inet.h ; then
5803         check_func closesocket
5804     elif check_headers winsock2.h ; then
5805         check_func_headers winsock2.h closesocket -lws2 &&
5806             network_extralibs="-lws2" ||
5807         { check_func_headers winsock2.h closesocket -lws2_32 &&
5808             network_extralibs="-lws2_32"; } || disable winsock2_h network
5809         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5810
5811         check_type ws2tcpip.h socklen_t
5812         check_type ws2tcpip.h "struct addrinfo"
5813         check_type ws2tcpip.h "struct group_source_req"
5814         check_type ws2tcpip.h "struct ip_mreq_source"
5815         check_type ws2tcpip.h "struct ipv6_mreq"
5816         check_type winsock2.h "struct pollfd"
5817         check_struct winsock2.h "struct sockaddr" sa_len
5818         check_type ws2tcpip.h "struct sockaddr_in6"
5819         check_type ws2tcpip.h "struct sockaddr_storage"
5820     else
5821         disable network
5822     fi
5823 fi
5824
5825 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5826 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5827 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5828 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5829 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5830 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5831 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5832
5833 case "$custom_allocator" in
5834     jemalloc)
5835         # jemalloc by default does not use a prefix
5836         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5837     ;;
5838     tcmalloc)
5839         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
5840         malloc_prefix=tc_
5841     ;;
5842 esac
5843
5844 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5845 check_func  ${malloc_prefix}memalign            && enable memalign
5846 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5847
5848 check_func  access
5849 check_func_headers stdlib.h arc4random
5850 check_lib   clock_gettime time.h clock_gettime || check_lib clock_gettime time.h clock_gettime -lrt
5851 check_func  fcntl
5852 check_func  fork
5853 check_func  gethrtime
5854 check_func  getopt
5855 check_func  getrusage
5856 check_func  gettimeofday
5857 check_func  isatty
5858 check_func  mkstemp
5859 check_func  mmap
5860 check_func  mprotect
5861 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5862 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
5863 check_func  sched_getaffinity
5864 check_func  setrlimit
5865 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5866 check_func  strerror_r
5867 check_func  sysconf
5868 check_func  sysctl
5869 check_func  usleep
5870
5871 check_func_headers conio.h kbhit
5872 check_func_headers io.h setmode
5873 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5874 check_func_headers mach/mach_time.h mach_absolute_time
5875 check_func_headers stdlib.h getenv
5876 check_func_headers sys/stat.h lstat
5877
5878 check_func_headers windows.h GetProcessAffinityMask
5879 check_func_headers windows.h GetProcessTimes
5880 check_func_headers windows.h GetSystemTimeAsFileTime
5881 check_func_headers windows.h LoadLibrary
5882 check_func_headers windows.h MapViewOfFile
5883 check_func_headers windows.h PeekNamedPipe
5884 check_func_headers windows.h SetConsoleTextAttribute
5885 check_func_headers windows.h SetConsoleCtrlHandler
5886 check_func_headers windows.h Sleep
5887 check_func_headers windows.h VirtualAlloc
5888 check_func_headers glob.h glob
5889 enabled xlib &&
5890     check_lib xlib "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5891
5892 check_headers direct.h
5893 check_headers dirent.h
5894 check_headers dxgidebug.h
5895 check_headers dxva.h
5896 check_headers dxva2api.h -D_WIN32_WINNT=0x0600
5897 check_headers io.h
5898 check_headers linux/perf_event.h
5899 check_headers libcrystalhd/libcrystalhd_if.h
5900 check_headers malloc.h
5901 check_headers net/udplite.h
5902 check_headers poll.h
5903 check_headers sys/param.h
5904 check_headers sys/resource.h
5905 check_headers sys/select.h
5906 check_headers sys/time.h
5907 check_headers sys/un.h
5908 check_headers termios.h
5909 check_headers unistd.h
5910 check_headers valgrind/valgrind.h
5911 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5912 check_headers windows.h
5913 check_headers X11/extensions/XvMClib.h
5914 check_headers asm/types.h
5915
5916 # it seems there are versions of clang in some distros that try to use the
5917 # gcc headers, which explodes for stdatomic
5918 # so we also check that atomics actually work here
5919 check_builtin stdatomic stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0); foo += bar"
5920
5921 check_lib advapi32 "windows.h"            RegCloseKey          -ladvapi32
5922 check_lib bcrypt   "windows.h bcrypt.h"   BCryptGenRandom      -lbcrypt &&
5923     check_cpp_condition bcrypt bcrypt.h "defined BCRYPT_RNG_ALGORITHM"
5924 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
5925 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
5926 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
5927
5928 check_lib android android/native_window.h ANativeWindow_acquire -landroid
5929 check_lib mediandk "stdint.h media/NdkImage.h" AImage_delete -lmediandk
5930 check_lib camera2ndk "stdbool.h stdint.h camera/NdkCameraManager.h" ACameraManager_create -lcamera2ndk
5931
5932 enabled appkit       && check_apple_framework AppKit
5933 enabled audiotoolbox && check_apple_framework AudioToolbox
5934 enabled avfoundation && check_apple_framework AVFoundation
5935 enabled coreimage    && check_apple_framework CoreImage
5936 enabled videotoolbox && check_apple_framework VideoToolbox
5937
5938 check_apple_framework CoreFoundation
5939 check_apple_framework CoreMedia
5940 check_apple_framework CoreVideo
5941
5942 enabled avfoundation && {
5943     disable coregraphics applicationservices
5944     check_lib coregraphics        CoreGraphics/CoreGraphics.h               CGGetActiveDisplayList "-framework CoreGraphics" ||
5945     check_lib applicationservices ApplicationServices/ApplicationServices.h CGGetActiveDisplayList "-framework ApplicationServices"; }
5946
5947 enabled videotoolbox && {
5948     check_lib coreservices CoreServices/CoreServices.h UTGetOSTypeFromString "-framework CoreServices"
5949     check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_HEVC "-framework CoreMedia"
5950 }
5951
5952 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5953
5954 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5955 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5956 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5957 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5958 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5959
5960 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
5961 check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
5962 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5963 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5964 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
5965 check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
5966
5967 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5968
5969 if ! disabled ffnvcodec; then
5970     check_pkg_config ffnvcodec "ffnvcodec >= 8.1.24.2" \
5971           "ffnvcodec/nvEncodeAPI.h ffnvcodec/dynlink_cuda.h ffnvcodec/dynlink_cuviddec.h ffnvcodec/dynlink_nvcuvid.h" "" || \
5972       check_pkg_config ffnvcodec "ffnvcodec >= 8.0.14.2 ffnvcodec < 8.1" \
5973           "ffnvcodec/nvEncodeAPI.h ffnvcodec/dynlink_cuda.h ffnvcodec/dynlink_cuviddec.h ffnvcodec/dynlink_nvcuvid.h" ""
5974 fi
5975
5976 check_cpp_condition winrt windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)"
5977
5978 if ! disabled w32threads && ! enabled pthreads; then
5979     check_func_headers "windows.h process.h" _beginthreadex &&
5980         check_type "windows.h" CONDITION_VARIABLE &&
5981         check_type "windows.h" INIT_ONCE &&
5982         enable w32threads || disable w32threads
5983     if ! enabled w32threads && enabled winrt; then
5984         check_func_headers "windows.h" CreateThread &&
5985             enable w32threads || disable w32threads
5986     fi
5987 fi
5988
5989 # check for some common methods of building with pthread support
5990 # do this before the optional library checks as some of them require pthreads
5991 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5992     if check_lib pthreads pthread.h pthread_join   -pthread &&
5993        check_lib pthreads pthread.h pthread_create -pthread; then
5994         add_cflags -pthread
5995     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
5996          check_lib pthreads pthread.h pthread_create -pthreads; then
5997         add_cflags -pthreads
5998     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
5999          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
6000         add_cflags -ldl -pthread
6001     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
6002          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
6003         :
6004     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
6005          check_lib pthreads pthread.h pthread_create -lpthread; then
6006         :
6007     elif check_func pthread_join && check_func pthread_create; then
6008         enable pthreads
6009     fi
6010     check_cc pthreads "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER"
6011
6012     if enabled pthreads; then
6013         check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
6014         check_func pthread_cancel $pthreads_extralibs
6015     fi
6016 fi
6017
6018 enabled  zlib && { check_pkg_config zlib zlib "zlib.h" zlibVersion ||
6019                    check_lib zlib   zlib.h      zlibVersion    -lz; }
6020 enabled bzlib && check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
6021 enabled  lzma && check_lib lzma   lzma.h lzma_version_number -llzma
6022
6023 # On some systems dynamic loading requires no extra linker flags
6024 check_lib libdl dlfcn.h "dlopen dlsym" || check_lib libdl dlfcn.h "dlopen dlsym" -ldl
6025
6026 check_lib libm math.h sin -lm
6027
6028 atan2f_args=2
6029 copysign_args=2
6030 hypot_args=2
6031 ldexpf_args=2
6032 powf_args=2
6033
6034 for func in $MATH_FUNCS; do
6035     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
6036 done
6037
6038 for func in $COMPLEX_FUNCS; do
6039     eval check_complexfunc $func \${${func}_args:-1}
6040 done
6041
6042 # these are off by default, so fail if requested and not available
6043 enabled cuda_sdk          && require cuda_sdk cuda.h cuCtxCreate -lcuda
6044 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
6045 enabled decklink          && { require_headers DeckLinkAPI.h &&
6046                                { test_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a090500" || die "ERROR: Decklink API version must be >= 10.9.5."; } }
6047 enabled libndi_newtek     && require_headers Processing.NDI.Lib.h
6048 enabled frei0r            && require_headers frei0r.h
6049 enabled gmp               && require gmp gmp.h mpz_export -lgmp
6050 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
6051 enabled jni               && { [ $target_os = "android" ] && check_headers jni.h && enabled pthreads || die "ERROR: jni not found"; }
6052 enabled ladspa            && require_headers ladspa.h
6053 enabled libaom            && require_pkg_config libaom "aom >= 1.0.0" aom/aom_codec.h aom_codec_version
6054 enabled lv2               && require_pkg_config lv2 lilv-0 "lilv/lilv.h" lilv_world_new
6055 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
6056 enabled libass            && require_pkg_config libass libass ass/ass.h ass_library_init
6057 enabled libbluray         && require_pkg_config libbluray libbluray libbluray/bluray.h bd_open
6058 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
6059 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
6060                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
6061                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
6062 enabled libcaca           && require_pkg_config libcaca caca caca.h caca_create_canvas
6063 enabled libcodec2         && require libcodec2 codec2/codec2.h codec2_create -lcodec2
6064 enabled libdavs2          && require_pkg_config libdavs2 "davs2 >= 1.5.115" davs2.h davs2_decoder_open
6065 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
6066 enabled libdrm            && require_pkg_config libdrm libdrm xf86drm.h drmGetVersion
6067 enabled libfdk_aac        && { check_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
6068                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
6069                                  warn "using libfdk without pkg-config"; } }
6070 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"
6071 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
6072 enabled fontconfig        && enable libfontconfig
6073 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
6074 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
6075 enabled libfribidi        && require_pkg_config libfribidi fribidi fribidi.h fribidi_version_info
6076 enabled libgme            && { check_pkg_config libgme libgme gme/gme.h gme_new_emu ||
6077                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }
6078 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
6079                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
6080                                done || die "ERROR: libgsm not found"; }
6081 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc $pthreads_extralibs
6082 enabled libklvanc         && require libklvanc libklvanc/vanc.h klvanc_context_create -lklvanc
6083 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
6084 enabled liblensfun        && require_pkg_config liblensfun lensfun lensfun.h lf_db_new
6085 # While it may appear that require is being used as a pkg-config
6086 # fallback for libmfx, it is actually being used to detect a different
6087 # installation route altogether.  If libmfx is installed via the Intel
6088 # Media SDK or Intel Media Server Studio, these don't come with
6089 # pkg-config support.  Instead, users should make sure that the build
6090 # can find the libraries and headers through other means.
6091 enabled libmfx            && { check_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit ||
6092                                { require libmfx "mfx/mfxvideo.h" MFXInit "-llibmfx $advapi32_extralibs" && warn "using libmfx without pkg-config"; } }
6093 enabled libmodplug        && require_pkg_config libmodplug libmodplug libmodplug/modplug.h ModPlug_Load
6094 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame $libm_extralibs
6095 enabled libmysofa         && { check_pkg_config libmysofa libmysofa mysofa.h mysofa_load ||
6096                                require libmysofa mysofa.h mysofa_load -lmysofa $zlib_extralibs; }
6097 enabled libnpp            && { check_lib libnpp npp.h nppGetLibVersion -lnppig -lnppicc -lnppc -lnppidei ||
6098                                check_lib libnpp npp.h nppGetLibVersion -lnppi -lnppc -lnppidei ||
6099                                die "ERROR: libnpp not found"; }
6100 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
6101 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
6102 enabled libopencv         && { check_headers opencv2/core/core_c.h &&
6103                                { check_pkg_config libopencv opencv opencv2/core/core_c.h cvCreateImageHeader ||
6104                                  require libopencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
6105                                require_pkg_config libopencv opencv opencv/cxcore.h cvCreateImageHeader; }
6106 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
6107 enabled libopenjpeg       && { check_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version ||
6108                                { require_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } }
6109 enabled libopenmpt        && require_pkg_config libopenmpt "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create -lstdc++ && append libopenmpt_extralibs "-lstdc++"
6110 enabled libopus           && {
6111     enabled libopus_decoder && {
6112         require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
6113     }
6114     enabled libopus_encoder && {
6115         require_pkg_config libopus opus opus_multistream.h opus_multistream_surround_encoder_create
6116     }
6117 }
6118 enabled libpulse          && require_pkg_config libpulse libpulse pulse/pulseaudio.h pa_context_new
6119 enabled librsvg           && require_pkg_config librsvg librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
6120 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
6121 enabled librubberband     && require_pkg_config librubberband "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new -lstdc++ && append librubberband_extralibs "-lstdc++"
6122 enabled libshine          && require_pkg_config libshine shine shine/layer3.h shine_encode_buffer
6123 enabled libsmbclient      && { check_pkg_config libsmbclient smbclient libsmbclient.h smbc_init ||
6124                                require libsmbclient libsmbclient.h smbc_init -lsmbclient; }
6125 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy -lstdc++
6126 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
6127 enabled libssh            && require_pkg_config libssh libssh libssh/sftp.h sftp_init
6128 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init
6129 enabled libsrt            && require_pkg_config libsrt "srt >= 1.3.0" srt/srt.h srt_socket
6130 enabled libtensorflow     && require libtensorflow tensorflow/c/c_api.h TF_Version -ltensorflow
6131 enabled libtesseract      && require_pkg_config libtesseract tesseract tesseract/capi.h TessBaseAPICreate
6132 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
6133 enabled libtls            && require_pkg_config libtls libtls tls.h tls_configure
6134 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
6135                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
6136                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
6137 enabled libv4l2           && require_pkg_config libv4l2 libv4l2 libv4l2.h v4l2_ioctl
6138 enabled libvidstab        && require_pkg_config libvidstab "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
6139 enabled libvmaf           && require_pkg_config libvmaf "libvmaf >= 1.3.9" libvmaf.h compute_vmaf
6140 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
6141 enabled libvorbis         && require_pkg_config libvorbis vorbis vorbis/codec.h vorbis_info_init &&
6142                              require_pkg_config libvorbisenc vorbisenc vorbis/vorbisenc.h vorbis_encode_init
6143
6144 enabled libvpx            && {
6145     enabled libvpx_vp8_decoder && {
6146         check_pkg_config libvpx_vp8_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
6147             check_lib libvpx_vp8_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_dec_init_ver VPX_IMG_FMT_HIGHBITDEPTH" -lvpx ||
6148                 die "ERROR: libvpx decoder version must be >=1.4.0";
6149     }
6150     enabled libvpx_vp8_encoder && {
6151         check_pkg_config libvpx_vp8_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
6152             check_lib libvpx_vp8_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VPX_IMG_FMT_HIGHBITDEPTH" -lvpx ||
6153                 die "ERROR: libvpx encoder version must be >=1.4.0";
6154     }
6155     enabled libvpx_vp9_decoder && {
6156         check_pkg_config libvpx_vp9_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
6157             check_lib libvpx_vp9_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx VPX_IMG_FMT_HIGHBITDEPTH" "-lvpx $libm_extralibs"
6158     }
6159     enabled libvpx_vp9_encoder && {
6160         check_pkg_config libvpx_vp9_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
6161             check_lib libvpx_vp9_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VPX_IMG_FMT_HIGHBITDEPTH" "-lvpx $libm_extralibs"
6162     }
6163     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
6164         die "libvpx enabled but no supported decoders found"
6165     fi
6166 }
6167
6168 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
6169 enabled libwebp           && {
6170     enabled libwebp_encoder      && require_pkg_config libwebp "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
6171     enabled libwebp_anim_encoder && check_pkg_config libwebp_anim_encoder "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit; }
6172 enabled libx264           && { check_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode ||
6173                                { require libx264 "stdint.h x264.h" x264_encoder_encode "-lx264 $pthreads_extralibs $libm_extralibs" &&
6174                                  warn "using libx264 without pkg-config"; } } &&
6175                              require_cpp_condition libx264 x264.h "X264_BUILD >= 118" &&
6176                              check_cpp_condition libx262 x264.h "X264_MPEG2"
6177 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
6178                              require_cpp_condition libx265 x265.h "X265_BUILD >= 68"
6179 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode "-lxavs $pthreads_extralibs $libm_extralibs"
6180 enabled libxavs2          && require_pkg_config libxavs2 "xavs2 >= 1.2.77" "stdint.h xavs2.h" xavs2_api_get
6181 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
6182 enabled libzimg           && require_pkg_config libzimg "zimg >= 2.7.0" zimg.h zimg_get_api_version
6183 enabled libzmq            && require_pkg_config libzmq libzmq zmq.h zmq_ctx_new
6184 enabled libzvbi           && require_pkg_config libzvbi zvbi-0.2 libzvbi.h vbi_decoder_new &&
6185                              { test_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
6186                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
6187 enabled libxml2           && require_pkg_config libxml2 libxml-2.0 libxml2/libxml/xmlversion.h xmlCheckVersion
6188 enabled mbedtls           && { check_pkg_config mbedtls mbedtls mbedtls/x509_crt.h mbedtls_x509_crt_init ||
6189                                check_pkg_config mbedtls mbedtls mbedtls/ssl.h mbedtls_ssl_init ||
6190                                check_lib mbedtls mbedtls/ssl.h mbedtls_ssl_init -lmbedtls -lmbedx509 -lmbedcrypto ||
6191                                die "ERROR: mbedTLS not found"; }
6192 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
6193 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
6194                                { ! enabled cross_compile &&
6195                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
6196                                  add_ldflags -L/opt/vc/lib/ &&
6197                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
6198                                die "ERROR: mmal not found" &&
6199                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
6200 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
6201                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
6202                                die "ERROR: openal not found"; } &&
6203                              { test_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
6204                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
6205 enabled opencl            && { check_pkg_config opencl OpenCL CL/cl.h clEnqueueNDRangeKernel ||
6206                                check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
6207                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
6208                                die "ERROR: opencl not found"; } &&
6209                              { test_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
6210                                test_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
6211                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
6212 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
6213                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
6214                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
6215                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
6216                                die "ERROR: opengl not found."
6217                              }
6218 enabled omx               && require_headers OMX_Core.h
6219 enabled omx_rpi           && { check_headers OMX_Core.h ||
6220                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_headers OMX_Core.h ; } ||
6221                                die "ERROR: OpenMAX IL headers not found"; } && enable omx
6222 enabled openssl           && { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
6223                                check_pkg_config openssl openssl openssl/ssl.h SSL_library_init ||
6224                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
6225                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
6226                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
6227                                die "ERROR: openssl not found"; }
6228 enabled rkmpp             && { require_pkg_config rkmpp rockchip_mpp  rockchip/rk_mpi.h mpp_create &&
6229                                require_pkg_config rockchip_mpp "rockchip_mpp >= 1.3.7" rockchip/rk_mpi.h mpp_create &&
6230                                { enabled libdrm ||
6231                                  die "ERROR: rkmpp requires --enable-libdrm"; }
6232                              }
6233 enabled vapoursynth       && require_pkg_config vapoursynth "vapoursynth-script >= 42" VSScript.h vsscript_init
6234
6235
6236 if enabled gcrypt; then
6237     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
6238     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
6239         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
6240         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
6241         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
6242             die "ERROR: gcrypt not found"
6243         add_cflags $gcrypt_cflags
6244     else
6245         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
6246     fi
6247 fi
6248
6249 if enabled sdl2; then
6250     SDL2_CONFIG="${cross_prefix}sdl2-config"
6251     test_pkg_config sdl2 "sdl2 >= 2.0.1 sdl2 < 2.1.0" SDL_events.h SDL_PollEvent
6252     if disabled sdl2 && "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6253         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6254         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6255         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6256         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6257         check_func_headers SDL_events.h SDL_PollEvent $sdl2_extralibs $sdl2_cflags &&
6258             enable sdl2
6259     fi
6260     if test $target_os = "mingw32"; then
6261         sdl2_extralibs=$(filter_out '-mwindows' $sdl2_extralibs)
6262     fi
6263 fi
6264
6265 if enabled decklink; then
6266     case $target_os in
6267         mingw32*|mingw64*|win32|win64)
6268             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6269             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6270             ;;
6271     esac
6272 fi
6273
6274 enabled securetransport &&
6275     check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6276     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" ||
6277         disable securetransport
6278
6279 enabled securetransport &&
6280     check_func SecItemImport "-Wl,-framework,CoreFoundation -Wl,-framework,Security"
6281
6282 enabled schannel &&
6283     check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6284     test_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" &&
6285     schannel_extralibs="-lsecur32" ||
6286         disable schannel
6287
6288 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6289 enabled makeinfo \
6290     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6291     && enable makeinfo_html || disable makeinfo_html
6292 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6293 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6294 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6295 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6296
6297 # check V4L2 codecs available in the API
6298 check_headers linux/fb.h
6299 check_headers linux/videodev2.h
6300 test_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6301 check_cc v4l2_m2m linux/videodev2.h "int i = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_VIDEO_M2M | V4L2_BUF_FLAG_LAST;"
6302 check_cc vc1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VC1_ANNEX_G;"
6303 check_cc mpeg1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG1;"
6304 check_cc mpeg2_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG2;"
6305 check_cc mpeg4_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG4;"
6306 check_cc hevc_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_HEVC;"
6307 check_cc h263_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H263;"
6308 check_cc h264_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H264;"
6309 check_cc vp8_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP8;"
6310 check_cc vp9_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP9;"
6311
6312 check_headers sys/videoio.h
6313 test_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6314
6315 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6316 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6317 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6318 # w32api 3.12 had it defined wrong
6319 check_cpp_condition vfwcap_defines vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER"
6320
6321 check_type "dshow.h" IBaseFilter
6322
6323 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6324 check_headers "dev/bktr/ioctl_meteor.h dev/bktr/ioctl_bt848.h"                   ||
6325     check_headers "machine/ioctl_meteor.h machine/ioctl_bt848.h"                 ||
6326     check_headers "dev/video/meteor/ioctl_meteor.h dev/video/bktr/ioctl_bt848.h" ||
6327     check_headers "dev/ic/bt8xx.h"
6328
6329 if check_struct sys/soundcard.h audio_buf_info bytes; then
6330     enable_sanitized sys/soundcard.h
6331 else
6332     test_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_sanitized sys/soundcard.h
6333     #include <sys/soundcard.h>
6334     audio_buf_info abc;
6335 EOF
6336 fi
6337
6338 enabled alsa && check_pkg_config alsa alsa "alsa/asoundlib.h" snd_pcm_htimestamp ||
6339     check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
6340
6341 enabled libjack &&
6342     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
6343
6344 enabled sndio && check_lib sndio sndio.h sio_open -lsndio
6345
6346 if enabled libcdio; then
6347     check_pkg_config libcdio libcdio_paranoia "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open ||
6348     check_pkg_config libcdio libcdio_paranoia "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open ||
6349     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6350     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6351     die "ERROR: No usable libcdio/cdparanoia found"
6352 fi
6353
6354 enabled libxcb && check_pkg_config libxcb "xcb >= 1.4" xcb/xcb.h xcb_connect ||
6355     disable libxcb_shm libxcb_shape libxcb_xfixes
6356
6357 if enabled libxcb; then
6358     enabled libxcb_shm    && check_pkg_config libxcb_shm    xcb-shm    xcb/shm.h    xcb_shm_attach
6359     enabled libxcb_shape  && check_pkg_config libxcb_shape  xcb-shape  xcb/shape.h  xcb_shape_get_rectangles
6360     enabled libxcb_xfixes && check_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
6361 fi
6362
6363 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6364
6365 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6366 # the desktop api partition
6367 test_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
6368 #ifdef WINAPI_FAMILY
6369 #include <winapifamily.h>
6370 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
6371 #error desktop, not uwp
6372 #else
6373 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
6374 #endif
6375 #else
6376 #error no family set
6377 #endif
6378 EOF
6379
6380 enabled vaapi &&
6381     check_pkg_config vaapi "libva >= 0.35.0" "va/va.h" vaInitialize
6382
6383 if enabled vaapi; then
6384     check_pkg_config vaapi_drm "libva-drm" "va/va_drm.h" vaGetDisplayDRM
6385
6386     if enabled xlib; then
6387         check_pkg_config vaapi_x11 "libva-x11" "va/va_x11.h" vaGetDisplay
6388     fi
6389
6390     check_cpp_condition vaapi_1 "va/va.h" "VA_CHECK_VERSION(1, 0, 0)"
6391 fi
6392
6393 if enabled_all opencl libdrm ; then
6394     check_type "CL/cl_intel.h" "clCreateImageFromFdINTEL_fn" &&
6395         enable opencl_drm_beignet
6396     check_func_headers "CL/cl_ext.h" clImportMemoryARM &&
6397         enable opencl_drm_arm
6398 fi
6399
6400 if enabled_all opencl vaapi ; then
6401     enabled opencl_drm_beignet && enable opencl_vaapi_beignet
6402     check_type "CL/cl.h CL/va_ext.h" "clCreateFromVA_APIMediaSurfaceINTEL_fn" &&
6403         enable opencl_vaapi_intel_media
6404 fi
6405
6406 if enabled_all opencl dxva2 ; then
6407     check_type "CL/cl_dx9_media_sharing.h" cl_dx9_surface_info_khr &&
6408         enable opencl_dxva2
6409 fi
6410
6411 if enabled_all opencl d3d11va ; then
6412     check_type "CL/cl_d3d11.h" clGetDeviceIDsFromD3D11KHR_fn &&
6413         enable opencl_d3d11
6414 fi
6415
6416 enabled vdpau &&
6417     check_cpp_condition vdpau vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP"
6418
6419 enabled vdpau &&
6420     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6421
6422 enabled crystalhd && check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
6423
6424 if enabled x86; then
6425     case $target_os in
6426         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6427             ;;
6428         *)
6429             disable ffnvcodec cuvid nvdec nvenc
6430             ;;
6431     esac
6432 else
6433     disable ffnvcodec cuvid nvdec nvenc
6434 fi
6435
6436 enabled ffnvcodec && enable cuda
6437
6438 enabled nvenc &&
6439     test_cc -I$source_path <<EOF || disable nvenc
6440 #include <ffnvcodec/nvEncodeAPI.h>
6441 NV_ENCODE_API_FUNCTION_LIST flist;
6442 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6443 int main(void) { return 0; }
6444 EOF
6445
6446 enabled amf &&
6447     check_cpp_condition amf "AMF/core/Version.h" \
6448         "(AMF_VERSION_MAJOR << 48 | AMF_VERSION_MINOR << 32 | AMF_VERSION_RELEASE << 16 | AMF_VERSION_BUILD_NUM) >= 0x0001000400040001"
6449
6450 # Funny iconv installations are not unusual, so check it after all flags have been set
6451 if enabled libc_iconv; then
6452     check_func_headers iconv.h iconv
6453 elif enabled iconv; then
6454     check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6455 fi
6456
6457 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6458
6459 # add some useful compiler flags if supported
6460 check_cflags -Wdeclaration-after-statement
6461 check_cflags -Wall
6462 check_cflags -Wdisabled-optimization
6463 check_cflags -Wpointer-arith
6464 check_cflags -Wredundant-decls
6465 check_cflags -Wwrite-strings
6466 check_cflags -Wtype-limits
6467 check_cflags -Wundef
6468 check_cflags -Wmissing-prototypes
6469 check_cflags -Wno-pointer-to-int-cast
6470 check_cflags -Wstrict-prototypes
6471 check_cflags -Wempty-body
6472
6473 if enabled extra_warnings; then
6474     check_cflags -Wcast-qual
6475     check_cflags -Wextra
6476     check_cflags -Wpedantic
6477 fi
6478
6479 check_disable_warning(){
6480     warning_flag=-W${1#-Wno-}
6481     test_cflags $unknown_warning_flags $warning_flag && add_cflags $1
6482 }
6483
6484 test_cflags -Werror=unused-command-line-argument &&
6485     append unknown_warning_flags "-Werror=unused-command-line-argument"
6486 test_cflags -Werror=unknown-warning-option &&
6487     append unknown_warning_flags "-Werror=unknown-warning-option"
6488
6489 check_disable_warning -Wno-parentheses
6490 check_disable_warning -Wno-switch
6491 check_disable_warning -Wno-format-zero-length
6492 check_disable_warning -Wno-pointer-sign
6493 check_disable_warning -Wno-unused-const-variable
6494 check_disable_warning -Wno-bool-operation
6495
6496 check_disable_warning_headers(){
6497     warning_flag=-W${1#-Wno-}
6498     test_cflags $warning_flag && add_cflags_headers $1
6499 }
6500
6501 check_disable_warning_headers -Wno-deprecated-declarations
6502 check_disable_warning_headers -Wno-unused-variable
6503
6504 test_cc <<EOF && enable blocks_extension
6505 void (^block)(void);
6506 EOF
6507
6508 # add some linker flags
6509 check_ldflags -Wl,--warn-common
6510 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6511 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir && add_ldsoflags -Wl,-rpath,$libdir
6512 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6513
6514 # add some strip flags
6515 check_stripflags -x
6516
6517 enabled neon_clobber_test &&
6518     check_ldflags -Wl,--wrap,avcodec_open2              \
6519                   -Wl,--wrap,avcodec_decode_audio4      \
6520                   -Wl,--wrap,avcodec_decode_video2      \
6521                   -Wl,--wrap,avcodec_decode_subtitle2   \
6522                   -Wl,--wrap,avcodec_encode_audio2      \
6523                   -Wl,--wrap,avcodec_encode_video2      \
6524                   -Wl,--wrap,avcodec_encode_subtitle    \
6525                   -Wl,--wrap,avcodec_send_packet        \
6526                   -Wl,--wrap,avcodec_receive_packet     \
6527                   -Wl,--wrap,avcodec_send_frame         \
6528                   -Wl,--wrap,avcodec_receive_frame      \
6529                   -Wl,--wrap,swr_convert                \
6530                   -Wl,--wrap,avresample_convert ||
6531     disable neon_clobber_test
6532
6533 enabled xmm_clobber_test &&
6534     check_ldflags -Wl,--wrap,avcodec_open2              \
6535                   -Wl,--wrap,avcodec_decode_audio4      \
6536                   -Wl,--wrap,avcodec_decode_video2      \
6537                   -Wl,--wrap,avcodec_decode_subtitle2   \
6538                   -Wl,--wrap,avcodec_encode_audio2      \
6539                   -Wl,--wrap,avcodec_encode_video2      \
6540                   -Wl,--wrap,avcodec_encode_subtitle    \
6541                   -Wl,--wrap,avcodec_send_packet        \
6542                   -Wl,--wrap,avcodec_receive_packet     \
6543                   -Wl,--wrap,avcodec_send_frame         \
6544                   -Wl,--wrap,avcodec_receive_frame      \
6545                   -Wl,--wrap,swr_convert                \
6546                   -Wl,--wrap,avresample_convert         \
6547                   -Wl,--wrap,sws_scale ||
6548     disable xmm_clobber_test
6549
6550 check_ld "cc" proper_dce <<EOF
6551 extern const int array[512];
6552 static inline int func(void) { return array[0]; }
6553 int main(void) { return 0; }
6554 EOF
6555
6556 if enabled proper_dce; then
6557     echo "X { local: *; };" > $TMPV
6558     if test_ldflags -Wl,${version_script},$TMPV; then
6559         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6560         quotes='""'
6561         test_cc <<EOF && enable symver_asm_label
6562 void ff_foo(void) __asm__ ("av_foo@VERSION");
6563 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6564 EOF
6565         test_cc <<EOF && enable symver_gnu_asm
6566 __asm__(".symver ff_foo,av_foo@VERSION");
6567 void ff_foo(void) {}
6568 EOF
6569     fi
6570 fi
6571
6572 if [ -z "$optflags" ]; then
6573     if enabled small; then
6574         optflags=$cflags_size
6575     elif enabled optimizations; then
6576         optflags=$cflags_speed
6577     else
6578         optflags=$cflags_noopt
6579     fi
6580 fi
6581
6582 if [ -z "$nvccflags" ]; then
6583     nvccflags=$nvccflags_default
6584 fi
6585
6586 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6587     nvccflags="$nvccflags -m64"
6588 else
6589     nvccflags="$nvccflags -m32"
6590 fi
6591
6592 check_optflags(){
6593     check_cflags "$@"
6594     enabled lto && check_ldflags "$@"
6595 }
6596
6597 check_optflags $optflags
6598 check_optflags -fno-math-errno
6599 check_optflags -fno-signed-zeros
6600
6601 if enabled lto; then
6602     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6603     check_cflags  -flto
6604     check_ldflags -flto $cpuflags
6605     disable inline_asm_direct_symbol_refs
6606 fi
6607
6608 enabled ftrapv && check_cflags -ftrapv
6609
6610 test_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6611 int x;
6612 EOF
6613
6614
6615 if enabled icc; then
6616     # Just warnings, no remarks
6617     check_cflags -w1
6618     # -wd: Disable following warnings
6619     # 144, 167, 556: -Wno-pointer-sign
6620     # 188: enumerated type mixed with another type
6621     # 1292: attribute "foo" ignored
6622     # 1419: external declaration in primary source file
6623     # 10006: ignoring unknown option -fno-signed-zeros
6624     # 10148: ignoring unknown option -Wno-parentheses
6625     # 10156: ignoring option '-W'; no argument required
6626     # 13200: No EMMS instruction before call to function
6627     # 13203: No EMMS instruction before return from function
6628     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6629     # 11030: Warning unknown option --as-needed
6630     # 10156: ignoring option '-export'; no argument required
6631     check_ldflags -wd10156,11030
6632     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6633     enable ebp_available
6634     # The test above does not test linking
6635     enabled lto && disable symver_asm_label
6636     if enabled x86_32; then
6637         icc_version=$($cc -dumpversion)
6638         test ${icc_version%%.*} -ge 11 &&
6639             check_cflags -falign-stack=maintain-16-byte ||
6640             disable aligned_stack
6641     fi
6642 elif enabled gcc; then
6643     check_optflags -fno-tree-vectorize
6644     check_cflags -Werror=format-security
6645     check_cflags -Werror=implicit-function-declaration
6646     check_cflags -Werror=missing-prototypes
6647     check_cflags -Werror=return-type
6648     check_cflags -Werror=vla
6649     check_cflags -Wformat
6650     check_cflags -fdiagnostics-color=auto
6651     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6652     if enabled x86_32; then
6653         case $target_os in
6654         *bsd*)
6655             # BSDs don't guarantee a 16 byte aligned stack, but we can
6656             # request GCC to try to maintain 16 byte alignment throughout
6657             # function calls. Library entry points that might call assembly
6658             # functions align the stack. (The parameter means 2^4 bytes.)
6659             check_cflags -mpreferred-stack-boundary=4
6660             ;;
6661         esac
6662     fi
6663 elif enabled llvm_gcc; then
6664     check_cflags -mllvm -stack-alignment=16
6665 elif enabled clang; then
6666     if enabled x86_32; then
6667         # Clang doesn't support maintaining alignment without assuming the
6668         # same alignment in every function. If 16 byte alignment would be
6669         # enabled, one would also have to either add attribute_align_arg on
6670         # every single entry point into the libraries or enable -mstackrealign
6671         # (doing stack realignment in every single function).
6672         case $target_os in
6673         mingw32|win32|*bsd*)
6674             disable aligned_stack
6675             ;;
6676         *)
6677             check_cflags -mllvm -stack-alignment=16
6678             check_cflags -mstack-alignment=16
6679             ;;
6680         esac
6681     else
6682         check_cflags -mllvm -stack-alignment=16
6683         check_cflags -mstack-alignment=16
6684     fi
6685     check_cflags -Qunused-arguments
6686     check_cflags -Werror=implicit-function-declaration
6687     check_cflags -Werror=missing-prototypes
6688     check_cflags -Werror=return-type
6689 elif enabled cparser; then
6690     add_cflags -Wno-missing-variable-declarations
6691     add_cflags -Wno-empty-statement
6692 elif enabled armcc; then
6693     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6694     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6695     # 2523: use of inline assembly is deprecated
6696     add_cflags -W${armcc_opt},--diag_suppress=2523
6697     add_cflags -W${armcc_opt},--diag_suppress=1207
6698     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6699     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6700     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6701     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6702 elif enabled pathscale; then
6703     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6704     disable inline_asm
6705 elif enabled_any msvc icl; then
6706     enabled x86_32 && disable aligned_stack
6707     enabled_all x86_32 debug && add_cflags -Oy-
6708     enabled debug && add_ldflags -debug
6709     enable pragma_deprecated
6710     if enabled icl; then
6711         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6712         # (correctly) on icl 13.x.
6713         test_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6714             add_cflags -Qansi-alias
6715         # Some inline asm is not compilable in debug
6716         if enabled debug; then
6717             disable ebp_available
6718             disable ebx_available
6719         fi
6720     fi
6721     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6722     check_cpp_condition log2 crtversion.h "_VC_CRT_MAJOR_VERSION >= 12"
6723     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6724     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6725     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6726     # MSVC 2013 and newer can handle it fine.
6727     # If this declspec fails, force including stdlib.h before the restrict redefinition
6728     # happens in config.h.
6729     if [ $restrict_keyword != restrict ]; then
6730         test_cc <<EOF || add_cflags -FIstdlib.h
6731 __declspec($restrict_keyword) void *foo(int);
6732 EOF
6733     fi
6734     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6735     # Issue has been fixed in MSVC v19.00.24218.
6736     test_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6737         check_cflags -d2SSAOptimizer-
6738     # enable utf-8 source processing on VS2015 U2 and newer
6739     test_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6740         add_cflags -utf-8
6741 fi
6742
6743 for pfx in "" host_; do
6744     varname=${pfx%_}cc_type
6745     eval "type=\$$varname"
6746     if [ "$type" = "msvc" ]; then
6747         test_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6748 static inline int foo(int a) { return a; }
6749 EOF
6750     fi
6751 done
6752
6753 case $as_type in
6754     clang)
6755         add_asflags -Qunused-arguments
6756     ;;
6757 esac
6758
6759 case $ld_type in
6760     clang)
6761         check_ldflags -Qunused-arguments
6762     ;;
6763 esac
6764
6765 enable frame_thread_encoder
6766
6767 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6768
6769 check_deps $CONFIG_LIST       \
6770            $CONFIG_EXTRA      \
6771            $HAVE_LIST         \
6772            $ALL_COMPONENTS    \
6773
6774 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"
6775 enabled avresample && warn "Building with deprecated library libavresample"
6776
6777 if test $target_os = "haiku"; then
6778     disable memalign
6779     disable posix_memalign
6780 fi
6781
6782 flatten_extralibs(){
6783     nested_entries=
6784     list_name=$1
6785     eval list=\$${1}
6786     for entry in $list; do
6787         entry_copy=$entry
6788         resolve entry_copy
6789         flat_entries=
6790         for e in $entry_copy; do
6791             case $e in
6792                 *_extralibs) nested_entries="$nested_entries$e ";;
6793                           *) flat_entries="$flat_entries$e ";;
6794             esac
6795         done
6796         eval $entry="\$flat_entries"
6797     done
6798     append $list_name "$nested_entries"
6799
6800     resolve nested_entries
6801     if test -n "$(filter '*_extralibs' $nested_entries)"; then
6802         flatten_extralibs $list_name
6803     fi
6804 }
6805
6806 flatten_extralibs_wrapper(){
6807     list_name=$1
6808     flatten_extralibs $list_name
6809     unique $list_name
6810     resolve $list_name
6811     eval $list_name=\$\(\$ldflags_filter \$$list_name\)
6812     eval printf \''%s'\' \""\$$list_name"\"
6813 }
6814
6815 for linkunit in $LIBRARY_LIST; do
6816     unset current_extralibs
6817     eval components=\$$(toupper ${linkunit})_COMPONENTS_LIST
6818     for comp in ${components}; do
6819         enabled $comp || continue
6820         comp_extralibs="${comp}_extralibs"
6821         append current_extralibs $comp_extralibs
6822     done
6823     eval prepend ${linkunit}_extralibs $current_extralibs
6824 done
6825
6826 for linkunit in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
6827     eval ${linkunit}_extralibs=\$\(flatten_extralibs_wrapper ${linkunit}_extralibs\)
6828 done
6829
6830 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6831
6832 for thread in $THREADS_LIST; do
6833     if enabled $thread; then
6834         test -n "$thread_type" &&
6835             die "ERROR: Only one thread type must be selected." ||
6836             thread_type="$thread"
6837     fi
6838 done
6839
6840 if disabled stdatomic; then
6841     if enabled atomics_gcc; then
6842         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6843     elif enabled atomics_win32; then
6844         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6845     elif enabled atomics_suncc; then
6846         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6847     elif enabled pthreads; then
6848         add_compat atomics/pthread/stdatomic.o
6849         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6850     else
6851         enabled threads && die "Threading is enabled, but no atomics are available"
6852         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6853     fi
6854 fi
6855
6856 # Check if requested libraries were found.
6857 for lib in $AUTODETECT_LIBS; do
6858     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6859 done
6860
6861 enabled zlib && add_cppflags -DZLIB_CONST
6862
6863 # conditional library dependencies, in any order
6864 enabled afftdn_filter       && prepend avfilter_deps "avcodec"
6865 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6866 enabled afir_filter         && prepend avfilter_deps "avcodec"
6867 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6868 enabled aresample_filter    && prepend avfilter_deps "swresample"
6869 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6870 enabled bm3d_filter         && prepend avfilter_deps "avcodec"
6871 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6872 enabled convolve_filter     && prepend avfilter_deps "avcodec"
6873 enabled deconvolve_filter   && prepend avfilter_deps "avcodec"
6874 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6875 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6876 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6877 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6878 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
6879 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6880 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6881 enabled pan_filter          && prepend avfilter_deps "swresample"
6882 enabled pp_filter           && prepend avfilter_deps "postproc"
6883 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6884 enabled resample_filter && prepend avfilter_deps "avresample"
6885 enabled sab_filter          && prepend avfilter_deps "swscale"
6886 enabled scale_filter    && prepend avfilter_deps "swscale"
6887 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6888 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6889 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6890 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6891 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6892 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
6893 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6894 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6895 enabled spp_filter          && prepend avfilter_deps "avcodec"
6896 enabled sr_filter           && prepend avfilter_deps "avformat swscale"
6897 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6898 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6899 enabled zoompan_filter      && prepend avfilter_deps "swscale"
6900
6901 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6902
6903 #FIXME
6904 enabled sdl2_outdev     && add_cflags $(filter_out '-Dmain=SDL_main' $sdl2_cflags)
6905
6906 enabled opus_decoder    && prepend avcodec_deps "swresample"
6907
6908 # reorder the items at var $1 to align with the items order at var $2 .
6909 # die if an item at $1 is not at $2 .
6910 reorder_by(){
6911     eval rb_in=\$$1
6912     eval rb_ordered=\$$2
6913
6914     for rb in $rb_in; do
6915         is_in $rb $rb_ordered || die "$rb at \$$1 is not at \$$2"
6916     done
6917
6918     rb_out=
6919     for rb in $rb_ordered; do
6920         is_in $rb $rb_in && rb_out="$rb_out$rb "
6921     done
6922     eval $1=\$rb_out
6923 }
6924
6925 # deps-expand fflib $1:  N x {append all expanded deps; unique}
6926 # within a set of N items, N expansions are enough to expose a cycle.
6927 expand_deps(){
6928     unique ${1}_deps  # required for the early break test.
6929     for dummy in $LIBRARY_LIST; do  # N iteratios
6930         eval deps=\$${1}_deps
6931         append ${1}_deps $(map 'eval echo \$${v}_deps' $deps)
6932         unique ${1}_deps
6933         eval '[ ${#deps} = ${#'${1}_deps'} ]' && break  # doesn't expand anymore
6934     done
6935
6936     eval is_in $1 \$${1}_deps && die "Dependency cycle at ${1}_deps"
6937     reorder_by ${1}_deps LIBRARY_LIST  # linking order is expected later
6938 }
6939
6940 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6941 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6942
6943 map 'expand_deps $v' $LIBRARY_LIST
6944
6945 if test "$quiet" != "yes"; then
6946
6947 echo "install prefix            $prefix"
6948 echo "source path               $source_path"
6949 echo "C compiler                $cc"
6950 echo "C library                 $libc_type"
6951 if test "$host_cc" != "$cc"; then
6952     echo "host C compiler           $host_cc"
6953     echo "host C library            $host_libc_type"
6954 fi
6955 echo "ARCH                      $arch ($cpu)"
6956 if test "$build_suffix" != ""; then
6957     echo "build suffix              $build_suffix"
6958 fi
6959 if test "$progs_suffix" != ""; then
6960     echo "progs suffix              $progs_suffix"
6961 fi
6962 if test "$extra_version" != ""; then
6963     echo "version string suffix     $extra_version"
6964 fi
6965 echo "big-endian                ${bigendian-no}"
6966 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6967 if enabled x86; then
6968     echo "standalone assembly       ${x86asm-no}"
6969     echo "x86 assembler             ${x86asmexe}"
6970     echo "MMX enabled               ${mmx-no}"
6971     echo "MMXEXT enabled            ${mmxext-no}"
6972     echo "3DNow! enabled            ${amd3dnow-no}"
6973     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6974     echo "SSE enabled               ${sse-no}"
6975     echo "SSSE3 enabled             ${ssse3-no}"
6976     echo "AESNI enabled             ${aesni-no}"
6977     echo "AVX enabled               ${avx-no}"
6978     echo "AVX2 enabled              ${avx2-no}"
6979     echo "AVX-512 enabled           ${avx512-no}"
6980     echo "XOP enabled               ${xop-no}"
6981     echo "FMA3 enabled              ${fma3-no}"
6982     echo "FMA4 enabled              ${fma4-no}"
6983     echo "i686 features enabled     ${i686-no}"
6984     echo "CMOV is fast              ${fast_cmov-no}"
6985     echo "EBX available             ${ebx_available-no}"
6986     echo "EBP available             ${ebp_available-no}"
6987 fi
6988 if enabled aarch64; then
6989     echo "NEON enabled              ${neon-no}"
6990     echo "VFP enabled               ${vfp-no}"
6991 fi
6992 if enabled arm; then
6993     echo "ARMv5TE enabled           ${armv5te-no}"
6994     echo "ARMv6 enabled             ${armv6-no}"
6995     echo "ARMv6T2 enabled           ${armv6t2-no}"
6996     echo "VFP enabled               ${vfp-no}"
6997     echo "NEON enabled              ${neon-no}"
6998     echo "THUMB enabled             ${thumb-no}"
6999 fi
7000 if enabled mips; then
7001     echo "MIPS FPU enabled          ${mipsfpu-no}"
7002     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
7003     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
7004     echo "MIPS MSA enabled          ${msa-no}"
7005     echo "LOONGSON MMI enabled      ${mmi-no}"
7006 fi
7007 if enabled ppc; then
7008     echo "AltiVec enabled           ${altivec-no}"
7009     echo "VSX enabled               ${vsx-no}"
7010     echo "POWER8 enabled            ${power8-no}"
7011     echo "PPC 4xx optimizations     ${ppc4xx-no}"
7012     echo "dcbzl available           ${dcbzl-no}"
7013 fi
7014 echo "debug symbols             ${debug-no}"
7015 echo "strip symbols             ${stripping-no}"
7016 echo "optimize for size         ${small-no}"
7017 echo "optimizations             ${optimizations-no}"
7018 echo "static                    ${static-no}"
7019 echo "shared                    ${shared-no}"
7020 echo "postprocessing support    ${postproc-no}"
7021 echo "network support           ${network-no}"
7022 echo "threading support         ${thread_type-no}"
7023 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
7024 echo "texi2html enabled         ${texi2html-no}"
7025 echo "perl enabled              ${perl-no}"
7026 echo "pod2man enabled           ${pod2man-no}"
7027 echo "makeinfo enabled          ${makeinfo-no}"
7028 echo "makeinfo supports HTML    ${makeinfo_html-no}"
7029 test -n "$random_seed" &&
7030     echo "random seed               ${random_seed}"
7031 echo
7032
7033 echo "External libraries:"
7034 print_enabled '' $EXTERNAL_LIBRARY_LIST $EXTERNAL_AUTODETECT_LIBRARY_LIST | print_in_columns
7035 echo
7036
7037 echo "External libraries providing hardware acceleration:"
7038 print_enabled '' $HWACCEL_LIBRARY_LIST $HWACCEL_AUTODETECT_LIBRARY_LIST | print_in_columns
7039 echo
7040
7041 echo "Libraries:"
7042 print_enabled '' $LIBRARY_LIST | print_in_columns
7043 echo
7044
7045 echo "Programs:"
7046 print_enabled '' $PROGRAM_LIST | print_in_columns
7047 echo
7048
7049 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
7050     echo "Enabled ${type}s:"
7051     eval list=\$$(toupper $type)_LIST
7052     print_enabled '_*' $list | print_in_columns
7053     echo
7054 done
7055
7056 if test -n "$ignore_tests"; then
7057     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
7058     echo "Ignored FATE tests:"
7059     echo $ignore_tests | print_in_columns
7060     echo
7061 fi
7062
7063 echo "License: $license"
7064
7065 fi # test "$quiet" != "yes"
7066
7067 if test -n "$WARNINGS"; then
7068     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
7069     enabled fatal_warnings && exit 1
7070 fi
7071
7072 test -e Makefile || echo "include $source_path/Makefile" > Makefile
7073
7074 esc(){
7075     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
7076 }
7077
7078 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
7079
7080 enabled stripping || strip="echo skipping strip"
7081 enabled stripping || striptype=""
7082
7083 config_files="$TMPH ffbuild/config.mak doc/config.texi"
7084
7085 cat > ffbuild/config.mak <<EOF
7086 # Automatically generated by configure - do not modify!
7087 ifndef FFMPEG_CONFIG_MAK
7088 FFMPEG_CONFIG_MAK=1
7089 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
7090 prefix=$prefix
7091 LIBDIR=\$(DESTDIR)$libdir
7092 SHLIBDIR=\$(DESTDIR)$shlibdir
7093 INCDIR=\$(DESTDIR)$incdir
7094 BINDIR=\$(DESTDIR)$bindir
7095 DATADIR=\$(DESTDIR)$datadir
7096 DOCDIR=\$(DESTDIR)$docdir
7097 MANDIR=\$(DESTDIR)$mandir
7098 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
7099 INSTALL_NAME_DIR=$install_name_dir
7100 SRC_PATH=$source_path
7101 SRC_LINK=$source_link
7102 ifndef MAIN_MAKEFILE
7103 SRC_PATH:=\$(SRC_PATH:.%=..%)
7104 endif
7105 CC_IDENT=$cc_ident
7106 ARCH=$arch
7107 INTRINSICS=$intrinsics
7108 EXTERN_PREFIX=$extern_prefix
7109 CC=$cc
7110 CXX=$cxx
7111 AS=$as
7112 OBJCC=$objcc
7113 LD=$ld
7114 DEPCC=$dep_cc
7115 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
7116 DEPAS=$as
7117 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
7118 X86ASM=$x86asmexe
7119 DEPX86ASM=$x86asmexe
7120 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
7121 AR=$ar
7122 ARFLAGS=$arflags
7123 AR_O=$ar_o
7124 AR_CMD=$ar
7125 NM_CMD=$nm
7126 RANLIB=$ranlib
7127 STRIP=$strip
7128 STRIPTYPE=$striptype
7129 NVCC=$nvcc
7130 CP=cp -p
7131 LN_S=$ln_s
7132 CPPFLAGS=$CPPFLAGS
7133 CFLAGS=$CFLAGS
7134 CXXFLAGS=$CXXFLAGS
7135 OBJCFLAGS=$OBJCFLAGS
7136 ASFLAGS=$ASFLAGS
7137 NVCCFLAGS=$nvccflags
7138 AS_C=$AS_C
7139 AS_O=$AS_O
7140 OBJCC_C=$OBJCC_C
7141 OBJCC_E=$OBJCC_E
7142 OBJCC_O=$OBJCC_O
7143 CC_C=$CC_C
7144 CC_E=$CC_E
7145 CC_O=$CC_O
7146 CXX_C=$CXX_C
7147 CXX_O=$CXX_O
7148 NVCC_C=$NVCC_C
7149 NVCC_O=$NVCC_O
7150 LD_O=$LD_O
7151 X86ASM_O=$X86ASM_O
7152 LD_LIB=$LD_LIB
7153 LD_PATH=$LD_PATH
7154 DLLTOOL=$dlltool
7155 WINDRES=$windres
7156 DEPWINDRES=$dep_cc
7157 DOXYGEN=$doxygen
7158 LDFLAGS=$LDFLAGS
7159 LDEXEFLAGS=$LDEXEFLAGS
7160 LDSOFLAGS=$LDSOFLAGS
7161 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
7162 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
7163 X86ASMFLAGS=$X86ASMFLAGS
7164 BUILDSUF=$build_suffix
7165 PROGSSUF=$progs_suffix
7166 FULLNAME=$FULLNAME
7167 LIBPREF=$LIBPREF
7168 LIBSUF=$LIBSUF
7169 LIBNAME=$LIBNAME
7170 SLIBPREF=$SLIBPREF
7171 SLIBSUF=$SLIBSUF
7172 EXESUF=$EXESUF
7173 EXTRA_VERSION=$extra_version
7174 CCDEP=$CCDEP
7175 CXXDEP=$CXXDEP
7176 CCDEP_FLAGS=$CCDEP_FLAGS
7177 ASDEP=$ASDEP
7178 ASDEP_FLAGS=$ASDEP_FLAGS
7179 X86ASMDEP=$X86ASMDEP
7180 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
7181 CC_DEPFLAGS=$CC_DEPFLAGS
7182 AS_DEPFLAGS=$AS_DEPFLAGS
7183 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
7184 HOSTCC=$host_cc
7185 HOSTLD=$host_ld
7186 HOSTCFLAGS=$host_cflags
7187 HOSTCPPFLAGS=$host_cppflags
7188 HOSTEXESUF=$HOSTEXESUF
7189 HOSTLDFLAGS=$host_ldflags
7190 HOSTEXTRALIBS=$host_extralibs
7191 DEPHOSTCC=$host_cc
7192 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
7193 HOSTCCDEP=$HOSTCCDEP
7194 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
7195 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
7196 HOSTCC_C=$HOSTCC_C
7197 HOSTCC_O=$HOSTCC_O
7198 HOSTLD_O=$HOSTLD_O
7199 TARGET_EXEC=$target_exec $target_exec_args
7200 TARGET_PATH=$target_path
7201 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
7202 CFLAGS-ffplay=${sdl2_cflags}
7203 CFLAGS_HEADERS=$CFLAGS_HEADERS
7204 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
7205 EXTRALIBS=$extralibs
7206 COMPAT_OBJS=$compat_objs
7207 INSTALL=$install
7208 LIBTARGET=${LIBTARGET}
7209 SLIBNAME=${SLIBNAME}
7210 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
7211 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
7212 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
7213 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
7214 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
7215 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
7216 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
7217 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
7218 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
7219 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
7220 NOREDZONE_FLAGS=$noredzone_flags
7221 LIBFUZZER_PATH=$libfuzzer_path
7222 IGNORE_TESTS=$ignore_tests
7223 EOF
7224
7225 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
7226
7227 for entry in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
7228     eval echo "EXTRALIBS-${entry}=\$${entry}_extralibs" >> ffbuild/config.mak
7229 done
7230
7231 cat > $TMPH <<EOF
7232 /* Automatically generated by configure - do not modify! */
7233 #ifndef FFMPEG_CONFIG_H
7234 #define FFMPEG_CONFIG_H
7235 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
7236 #define FFMPEG_LICENSE "$(c_escape $license)"
7237 #define CONFIG_THIS_YEAR 2018
7238 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
7239 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
7240 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
7241 #define av_restrict $restrict_keyword
7242 #define EXTERN_PREFIX "${extern_prefix}"
7243 #define EXTERN_ASM ${extern_prefix}
7244 #define BUILDSUF "$build_suffix"
7245 #define SLIBSUF "$SLIBSUF"
7246 #define HAVE_MMX2 HAVE_MMXEXT
7247 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
7248 EOF
7249
7250 test -n "$assert_level" &&
7251     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
7252
7253 test -n "$malloc_prefix" &&
7254     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
7255
7256 if enabled x86asm; then
7257     append config_files $TMPASM
7258     cat > $TMPASM <<EOF
7259 ; Automatically generated by configure - do not modify!
7260 EOF
7261 fi
7262
7263 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
7264
7265
7266 mkdir -p doc
7267 mkdir -p tests
7268 mkdir -p tests/api
7269 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
7270
7271 print_config ARCH_   "$config_files" $ARCH_LIST
7272 print_config HAVE_   "$config_files" $HAVE_LIST
7273 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
7274                                      $CONFIG_EXTRA      \
7275                                      $ALL_COMPONENTS    \
7276
7277 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
7278 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
7279
7280 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
7281 cp_if_changed $TMPH config.h
7282 touch ffbuild/.config
7283
7284 enabled x86asm && cp_if_changed $TMPASM config.asm
7285
7286 cat > $TMPH <<EOF
7287 /* Generated by ffmpeg configure */
7288 #ifndef AVUTIL_AVCONFIG_H
7289 #define AVUTIL_AVCONFIG_H
7290 EOF
7291
7292 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
7293
7294 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
7295
7296 cp_if_changed $TMPH libavutil/avconfig.h
7297
7298 # full_filter_name_foo=vf_foo
7299 # full_filter_name_bar=asrc_bar
7300 # ...
7301 eval "$(sed -n "s/^extern AVFilter ff_\([avfsinkrc]\{2,5\}\)_\(.*\);/full_filter_name_\2=\1_\2/p" $source_path/libavfilter/allfilters.c)"
7302
7303 # generate the lists of enabled components
7304 print_enabled_components(){
7305     file=$1
7306     struct_name=$2
7307     name=$3
7308     shift 3
7309     echo "static const $struct_name * const $name[] = {" > $TMPH
7310     for c in $*; do
7311         if enabled $c; then
7312             case $name in
7313                 filter_list)
7314                     eval c=\$full_filter_name_${c%_filter}
7315                 ;;
7316                 indev_list)
7317                     c=${c%_indev}_demuxer
7318                 ;;
7319                 outdev_list)
7320                     c=${c%_outdev}_muxer
7321                 ;;
7322             esac
7323             printf "    &ff_%s,\n" $c >> $TMPH
7324         fi
7325     done
7326     if [ "$name" = "filter_list" ]; then
7327         for c in asrc_abuffer vsrc_buffer asink_abuffer vsink_buffer; do
7328             printf "    &ff_%s,\n" $c >> $TMPH
7329         done
7330     fi
7331     echo "    NULL };" >> $TMPH
7332     cp_if_changed $TMPH $file
7333 }
7334
7335 print_enabled_components libavfilter/filter_list.c AVFilter filter_list $FILTER_LIST
7336 print_enabled_components libavcodec/codec_list.c AVCodec codec_list $CODEC_LIST
7337 print_enabled_components libavcodec/parser_list.c AVCodecParser parser_list $PARSER_LIST
7338 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
7339 print_enabled_components libavformat/demuxer_list.c AVInputFormat demuxer_list $DEMUXER_LIST
7340 print_enabled_components libavformat/muxer_list.c AVOutputFormat muxer_list $MUXER_LIST
7341 print_enabled_components libavdevice/indev_list.c AVInputFormat indev_list $INDEV_LIST
7342 print_enabled_components libavdevice/outdev_list.c AVOutputFormat outdev_list $OUTDEV_LIST
7343 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
7344
7345 # Settings for pkg-config files
7346
7347 cat > $TMPH <<EOF
7348 # Automatically generated by configure - do not modify!
7349 shared=$shared
7350 build_suffix=$build_suffix
7351 prefix=$prefix
7352 libdir=$libdir
7353 incdir=$incdir
7354 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
7355 source_path=${source_path}
7356 LIBPREF=${LIBPREF}
7357 LIBSUF=${LIBSUF}
7358 extralibs_avutil="$avutil_extralibs"
7359 extralibs_avcodec="$avcodec_extralibs"
7360 extralibs_avformat="$avformat_extralibs"
7361 extralibs_avdevice="$avdevice_extralibs"
7362 extralibs_avfilter="$avfilter_extralibs"
7363 extralibs_avresample="$avresample_extralibs"
7364 extralibs_postproc="$postproc_extralibs"
7365 extralibs_swscale="$swscale_extralibs"
7366 extralibs_swresample="$swresample_extralibs"
7367 EOF
7368
7369 for lib in $LIBRARY_LIST; do
7370     lib_deps="$(eval echo \$${lib}_deps)"
7371     echo ${lib}_deps=\"$lib_deps\" >> $TMPH
7372 done
7373
7374 cp_if_changed $TMPH ffbuild/config.sh