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-libkvazaar      enable HEVC encoding via libkvazaar [no]
 243   --enable-liblensfun      enable lensfun lens correction [no]
 244   --enable-libmodplug      enable ModPlug via libmodplug [no]
 245   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 246   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 247   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 248   --enable-libopencv       enable video filtering via libopencv [no]
 249   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 250   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 251   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
 252   --enable-libopus         enable Opus de/encoding via libopus [no]
 253   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 254   --enable-librsvg         enable SVG rasterization via librsvg [no]
 255   --enable-librubberband   enable rubberband needed for rubberband filter [no]
 256   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 257   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 258   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 259   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
 260   --enable-libsoxr         enable Include libsoxr resampling [no]
 261   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 262   --enable-libsrt          enable Haivision SRT protocol via libsrt [no]
 263   --enable-libssh          enable SFTP protocol via libssh [no]
 264   --enable-libtensorflow   enable TensorFlow as a DNN module backend
 265                            for DNN based filters like sr [no]
 266   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
 267   --enable-libtheora       enable Theora encoding via libtheora [no]
 268   --enable-libtls          enable LibreSSL (via libtls), needed for https support
 269                            if openssl, gnutls or mbedtls is not used [no]
 270   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 271   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 272   --enable-libvidstab      enable video stabilization using vid.stab [no]
 273   --enable-libvmaf         enable vmaf filter via libvmaf [no]
 274   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 275   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 276                            native implementation exists [no]
 277   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 278   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 279   --enable-libwebp         enable WebP encoding via libwebp [no]
 280   --enable-libx264         enable H.264 encoding via x264 [no]
 281   --enable-libx265         enable HEVC encoding via x265 [no]
 282   --enable-libxavs         enable AVS encoding via xavs [no]
 283   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
 284   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
 285   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
 286   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
 287   --enable-libxvid         enable Xvid encoding via xvidcore,
 288                            native MPEG-4/Xvid encoder exists [no]
 289   --enable-libxml2         enable XML parsing using the C library libxml2, needed
 290                            for dash demuxing support [no]
 291   --enable-libzimg         enable z.lib, needed for zscale filter [no]
 292   --enable-libzmq          enable message passing via libzmq [no]
 293   --enable-libzvbi         enable teletext support via libzvbi [no]
 294   --enable-lv2             enable LV2 audio filtering [no]
 295   --disable-lzma           disable lzma [autodetect]
 296   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
 297   --enable-libndi_newtek   enable Newteck NDI I/O support [no]
 298   --enable-mbedtls         enable mbedTLS, needed for https support
 299                            if openssl, gnutls or libtls is not used [no]
 300   --enable-mediacodec      enable Android MediaCodec support [no]
 301   --enable-libmysofa       enable libmysofa, needed for sofalizer filter [no]
 302   --enable-openal          enable OpenAL 1.1 capture support [no]
 303   --enable-opencl          enable OpenCL processing [no]
 304   --enable-opengl          enable OpenGL rendering [no]
 305   --enable-openssl         enable openssl, needed for https support
 306                            if gnutls, libtls or mbedtls is not used [no]
 307   --disable-sndio          disable sndio support [autodetect]
 308   --disable-schannel       disable SChannel SSP, needed for TLS support on
 309                            Windows if openssl and gnutls are not used [autodetect]
 310   --disable-sdl2           disable sdl2 [autodetect]
 311   --disable-securetransport disable Secure Transport, needed for TLS support
 312                            on OSX if openssl and gnutls are not used [autodetect]
 313   --enable-vapoursynth     enable VapourSynth demuxer [no]
 314   --disable-xlib           disable xlib [autodetect]
 315   --disable-zlib           disable zlib [autodetect]
 316
 317   The following libraries provide various hardware acceleration features:
 318   --disable-amf            disable AMF video encoding code [autodetect]
 319   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
 320   --enable-cuda-sdk        enable CUDA features that require the CUDA SDK [no]
 321   --disable-cuvid          disable Nvidia CUVID support [autodetect]
 322   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
 323   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
 324   --disable-ffnvcodec      disable dynamically linked Nvidia code [autodetect]
 325   --enable-libdrm          enable DRM code (Linux) [no]
 326   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
 327   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
 328   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
 329   --disable-nvdec          disable Nvidia video decoding acceleration (via hwaccel) [autodetect]
 330   --disable-nvenc          disable Nvidia video encoding code [autodetect]
 331   --enable-omx             enable OpenMAX IL code [no]
 332   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
 333   --enable-rkmpp           enable Rockchip Media Process Platform code [no]
 334   --disable-v4l2-m2m       disable V4L2 mem2mem code [autodetect]
 335   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
 336   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
 337   --disable-videotoolbox   disable VideoToolbox code [autodetect]
 338
 339 Toolchain options:
 340   --arch=ARCH              select architecture [$arch]
 341   --cpu=CPU                select the minimum required CPU (affects
 342                            instruction selection, may crash on older CPUs)
 343   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 344   --progs-suffix=SUFFIX    program name suffix []
 345   --enable-cross-compile   assume a cross-compiler is used
 346   --sysroot=PATH           root of cross-build tree
 347   --sysinclude=PATH        location of cross-build system headers
 348   --target-os=OS           compiler targets OS [$target_os]
 349   --target-exec=CMD        command to run executables on target
 350   --target-path=DIR        path to view of build directory on target
 351   --target-samples=DIR     path to samples directory on target
 352   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 353   --toolchain=NAME         set tool defaults according to NAME
 354                            (gcc-asan, clang-asan, gcc-msan, clang-msan,
 355                            gcc-tsan, clang-tsan, gcc-usan, clang-usan,
 356                            valgrind-massif, valgrind-memcheck,
 357                            msvc, icl, gcov, llvm-cov, hardened)
 358   --nm=NM                  use nm tool NM [$nm_default]
 359   --ar=AR                  use archive tool AR [$ar_default]
 360   --as=AS                  use assembler AS [$as_default]
 361   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
 362   --strip=STRIP            use strip tool STRIP [$strip_default]
 363   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 364   --x86asmexe=EXE          use nasm-compatible assembler EXE [$x86asmexe_default]
 365   --cc=CC                  use C compiler CC [$cc_default]
 366   --cxx=CXX                use C compiler CXX [$cxx_default]
 367   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 368   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 369   --nvcc=NVCC              use Nvidia CUDA compiler NVCC [$nvcc_default]
 370   --ld=LD                  use linker LD [$ld_default]
 371   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 372   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 373   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 374   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 375   --host-cc=HOSTCC         use host C compiler HOSTCC
 376   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 377   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 378   --host-ld=HOSTLD         use host linker HOSTLD
 379   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 380   --host-libs=HLIBS        use libs HLIBS when linking for host
 381   --host-os=OS             compiler host OS [$target_os]
 382   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 383   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 384   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 385   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 386   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 387   --extra-ldsoflags=ELDFLAGS add ELDFLAGS to LDSOFLAGS [$LDSOFLAGS]
 388   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 389   --extra-version=STRING   version string suffix []
 390   --optflags=OPTFLAGS      override optimization-related compiler flags
 391   --nvccflags=NVCCFLAGS    override nvcc flags [$nvccflags_default]
 392   --build-suffix=SUFFIX    library name suffix []
 393   --enable-pic             build position-independent code
 394   --enable-thumb           compile for Thumb instruction set
 395   --enable-lto             use link-time optimization
 396   --env="ENV=override"     override the environment variables
 397
 398 Advanced options (experts only):
 399   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 400   --custom-allocator=NAME  use a supported custom allocator
 401   --disable-symver         disable symbol versioning
 402   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 403   --disable-safe-bitstream-reader
 404                            disable buffer boundary checking in bitreaders
 405                            (faster, but may crash)
 406   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 407
 408 Optimization options (experts only):
 409   --disable-asm            disable all assembly optimizations
 410   --disable-altivec        disable AltiVec optimizations
 411   --disable-vsx            disable VSX optimizations
 412   --disable-power8         disable POWER8 optimizations
 413   --disable-amd3dnow       disable 3DNow! optimizations
 414   --disable-amd3dnowext    disable 3DNow! extended optimizations
 415   --disable-mmx            disable MMX optimizations
 416   --disable-mmxext         disable MMXEXT optimizations
 417   --disable-sse            disable SSE optimizations
 418   --disable-sse2           disable SSE2 optimizations
 419   --disable-sse3           disable SSE3 optimizations
 420   --disable-ssse3          disable SSSE3 optimizations
 421   --disable-sse4           disable SSE4 optimizations
 422   --disable-sse42          disable SSE4.2 optimizations
 423   --disable-avx            disable AVX optimizations
 424   --disable-xop            disable XOP optimizations
 425   --disable-fma3           disable FMA3 optimizations
 426   --disable-fma4           disable FMA4 optimizations
 427   --disable-avx2           disable AVX2 optimizations
 428   --disable-avx512         disable AVX-512 optimizations
 429   --disable-aesni          disable AESNI optimizations
 430   --disable-armv5te        disable armv5te optimizations
 431   --disable-armv6          disable armv6 optimizations
 432   --disable-armv6t2        disable armv6t2 optimizations
 433   --disable-vfp            disable VFP optimizations
 434   --disable-neon           disable NEON optimizations
 435   --disable-inline-asm     disable use of inline assembly
 436   --disable-x86asm         disable use of standalone x86 assembly
 437   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
 438   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 439   --disable-msa            disable MSA optimizations
 440   --disable-mipsfpu        disable floating point MIPS optimizations
 441   --disable-mmi            disable Loongson SIMD optimizations
 442   --disable-fast-unaligned consider unaligned accesses slow
 443
 444 Developer options (useful when working on FFmpeg itself):
 445   --disable-debug          disable debugging symbols
 446   --enable-debug=LEVEL     set the debug level [$debuglevel]
 447   --disable-optimizations  disable compiler optimizations
 448   --enable-extra-warnings  enable more compiler warnings
 449   --disable-stripping      disable stripping of executables and shared libraries
 450   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 451                            2 causes a slowdown at runtime.
 452   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 453   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 454                            leaks and errors, using the specified valgrind binary.
 455                            Cannot be combined with --target-exec
 456   --enable-ftrapv          Trap arithmetic overflows
 457   --samples=PATH           location of test samples for FATE, if not set use
 458                            \$FATE_SAMPLES at make invocation time.
 459   --enable-neon-clobber-test check NEON registers for clobbering (should be
 460                            used only for debugging purposes)
 461   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 462                            should be used only for debugging purposes)
 463   --enable-random          randomly enable/disable components
 464   --disable-random
 465   --enable-random=LIST     randomly enable/disable specific components or
 466   --disable-random=LIST    component groups. LIST is a comma-separated list
 467                            of NAME[:PROB] entries where NAME is a component
 468                            (group) and PROB the probability associated with
 469                            NAME (default 0.5).
 470   --random-seed=VALUE      seed value for --enable/disable-random
 471   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 472                            (only applies to --disable-optimizations builds)
 473   --enable-osfuzz          Enable building fuzzer tool
 474   --libfuzzer=PATH         path to libfuzzer
 475   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
 476                            in the name) of tests whose result is ignored
 477   --enable-linux-perf      enable Linux Performance Monitor API
 478
 479 NOTE: Object files are built at the place where configure is launched.
 480 EOF
 481   exit 0
 482 }
 483
 484 if test -t 1 && which tput >/dev/null 2>&1; then
 485     ncolors=$(tput colors)
 486     if test -n "$ncolors" && test $ncolors -ge 8; then
 487         bold_color=$(tput bold)
 488         warn_color=$(tput setaf 3)
 489         error_color=$(tput setaf 1)
 490         reset_color=$(tput sgr0)
 491     fi
 492     # 72 used instead of 80 since that's the default of pr
 493     ncols=$(tput cols)
 494 fi
 495 : ${ncols:=72}
 496
 497 log(){
 498     echo "$@" >> $logfile
 499 }
 500
 501 log_file(){
 502     log BEGIN $1
 503     pr -n -t $1 >> $logfile
 504     log END $1
 505 }
 506
 507 warn(){
 508     log "WARNING: $*"
 509     WARNINGS="${WARNINGS}WARNING: $*\n"
 510 }
 511
 512 die(){
 513     log "$@"
 514     echo "$error_color$bold_color$@$reset_color"
 515     cat <<EOF
 516
 517 If you think configure made a mistake, make sure you are using the latest
 518 version from Git.  If the latest version fails, report the problem to the
 519 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 520 EOF
 521     if disabled logging; then
 522         cat <<EOF
 523 Rerun configure with logging enabled (do not use --disable-logging), and
 524 include the log this produces with your report.
 525 EOF
 526     else
 527         cat <<EOF
 528 Include the log file "$logfile" produced by configure as this will help
 529 solve the problem.
 530 EOF
 531     fi
 532     exit 1
 533 }
 534
 535 # Avoid locale weirdness, besides we really just want to translate ASCII.
 536 toupper(){
 537     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 538 }
 539
 540 tolower(){
 541     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 542 }
 543
 544 c_escape(){
 545     echo "$*" | sed 's/["\\]/\\\0/g'
 546 }
 547
 548 sh_quote(){
 549     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 550     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 551     echo "$v"
 552 }
 553
 554 cleanws(){
 555     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 556 }
 557
 558 filter(){
 559     pat=$1
 560     shift
 561     for v; do
 562         eval "case '$v' in $pat) printf '%s ' '$v' ;; esac"
 563     done
 564 }
 565
 566 filter_out(){
 567     pat=$1
 568     shift
 569     for v; do
 570         eval "case '$v' in $pat) ;; *) printf '%s ' '$v' ;; esac"
 571     done
 572 }
 573
 574 map(){
 575     m=$1
 576     shift
 577     for v; do eval $m; done
 578 }
 579
 580 add_suffix(){
 581     suffix=$1
 582     shift
 583     for v; do echo ${v}${suffix}; done
 584 }
 585
 586 remove_suffix(){
 587     suffix=$1
 588     shift
 589     for v; do echo ${v%$suffix}; done
 590 }
 591
 592 set_all(){
 593     value=$1
 594     shift
 595     for var in $*; do
 596         eval $var=$value
 597     done
 598 }
 599
 600 set_weak(){
 601     value=$1
 602     shift
 603     for var; do
 604         eval : \${$var:=$value}
 605     done
 606 }
 607
 608 sanitize_var_name(){
 609     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 610 }
 611
 612 set_sanitized(){
 613     var=$1
 614     shift
 615     eval $(sanitize_var_name "$var")='$*'
 616 }
 617
 618 get_sanitized(){
 619     eval echo \$$(sanitize_var_name "$1")
 620 }
 621
 622 pushvar(){
 623     for pvar in $*; do
 624         eval level=\${${pvar}_level:=0}
 625         eval ${pvar}_${level}="\$$pvar"
 626         eval ${pvar}_level=$(($level+1))
 627     done
 628 }
 629
 630 popvar(){
 631     for pvar in $*; do
 632         eval level=\${${pvar}_level:-0}
 633         test $level = 0 && continue
 634         eval level=$(($level-1))
 635         eval $pvar="\${${pvar}_${level}}"
 636         eval ${pvar}_level=$level
 637         eval unset ${pvar}_${level}
 638     done
 639 }
 640
 641 request(){
 642     for var in $*; do
 643         eval ${var}_requested=yes
 644         eval $var=
 645     done
 646 }
 647
 648 enable(){
 649     set_all yes $*
 650 }
 651
 652 disable(){
 653     set_all no $*
 654 }
 655
 656 enable_weak(){
 657     set_weak yes $*
 658 }
 659
 660 disable_weak(){
 661     set_weak no $*
 662 }
 663
 664 enable_sanitized(){
 665     for var; do
 666         enable $(sanitize_var_name $var)
 667     done
 668 }
 669
 670 disable_sanitized(){
 671     for var; do
 672         disable $(sanitize_var_name $var)
 673     done
 674 }
 675
 676 do_enable_deep(){
 677     for var; do
 678         enabled $var && continue
 679         set -- $var
 680         eval enable_deep \$${var}_select
 681         var=$1
 682         eval enable_deep_weak \$${var}_suggest
 683     done
 684 }
 685
 686 enable_deep(){
 687     do_enable_deep $*
 688     enable $*
 689 }
 690
 691 enable_deep_weak(){
 692     for var; do
 693         disabled $var && continue
 694         set -- $var
 695         do_enable_deep $var
 696         var=$1
 697         enable_weak $var
 698     done
 699 }
 700
 701 requested(){
 702     test "${1#!}" = "$1" && op="=" || op="!="
 703     eval test "x\$${1#!}_requested" $op "xyes"
 704 }
 705
 706 enabled(){
 707     test "${1#!}" = "$1" && op="=" || op="!="
 708     eval test "x\$${1#!}" $op "xyes"
 709 }
 710
 711 disabled(){
 712     test "${1#!}" = "$1" && op="=" || op="!="
 713     eval test "x\$${1#!}" $op "xno"
 714 }
 715
 716 enabled_all(){
 717     for opt; do
 718         enabled $opt || return 1
 719     done
 720 }
 721
 722 disabled_all(){
 723     for opt; do
 724         disabled $opt || return 1
 725     done
 726 }
 727
 728 enabled_any(){
 729     for opt; do
 730         enabled $opt && return 0
 731     done
 732 }
 733
 734 disabled_any(){
 735     for opt; do
 736         disabled $opt && return 0
 737     done
 738     return 1
 739 }
 740
 741 set_default(){
 742     for opt; do
 743         eval : \${$opt:=\$${opt}_default}
 744     done
 745 }
 746
 747 is_in(){
 748     value=$1
 749     shift
 750     for var in $*; do
 751         [ $var = $value ] && return 0
 752     done
 753     return 1
 754 }
 755
 756 # The cfg loop is very hot (several thousands iterations), and in bash also
 757 # potentialy quite slow. Try to abort the iterations early, preferably without
 758 # calling functions. 70%+ of the time cfg is already done or without deps.
 759 check_deps(){
 760     for cfg; do
 761         eval [ x\$${cfg}_checking = xdone ] && continue
 762         eval [ x\$${cfg}_checking = xinprogress ] && die "Circular dependency for $cfg."
 763
 764         eval "
 765         dep_all=\$${cfg}_deps
 766         dep_any=\$${cfg}_deps_any
 767         dep_con=\$${cfg}_conflict
 768         dep_sel=\$${cfg}_select
 769         dep_sgs=\$${cfg}_suggest
 770         dep_ifa=\$${cfg}_if
 771         dep_ifn=\$${cfg}_if_any
 772         "
 773
 774         # most of the time here $cfg has no deps - avoid costly no-op work
 775         if [ "$dep_all$dep_any$dep_con$dep_sel$dep_sgs$dep_ifa$dep_ifn" ]; then
 776             eval ${cfg}_checking=inprogress
 777
 778             set -- $cfg "$dep_all" "$dep_any" "$dep_con" "$dep_sel" "$dep_sgs" "$dep_ifa" "$dep_ifn"
 779             check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
 780             cfg=$1; dep_all=$2; dep_any=$3; dep_con=$4; dep_sel=$5 dep_sgs=$6; dep_ifa=$7; dep_ifn=$8
 781
 782             [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 783             [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 784             enabled_all  $dep_all || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not all dependencies are satisfied: $dep_all"; }
 785             enabled_any  $dep_any || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not any dependency is satisfied: $dep_any"; }
 786             disabled_all $dep_con || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some conflicting dependencies are unsatisfied: $dep_con"; }
 787             disabled_any $dep_sel && { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some selected dependency is unsatisfied: $dep_sel"; }
 788
 789             enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
 790
 791             for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
 792                 # filter out library deps, these do not belong in extralibs
 793                 is_in $dep $LIBRARY_LIST && continue
 794                 enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
 795             done
 796         fi
 797
 798         eval ${cfg}_checking=done
 799     done
 800 }
 801
 802 print_config(){
 803     pfx=$1
 804     files=$2
 805     shift 2
 806     map 'eval echo "$v \${$v:-no}"' "$@" |
 807     awk "BEGIN { split(\"$files\", files) }
 808         {
 809             c = \"$pfx\" toupper(\$1);
 810             v = \$2;
 811             sub(/yes/, 1, v);
 812             sub(/no/,  0, v);
 813             for (f in files) {
 814                 file = files[f];
 815                 if (file ~ /\\.h\$/) {
 816                     printf(\"#define %s %d\\n\", c, v) >>file;
 817                 } else if (file ~ /\\.asm\$/) {
 818                     printf(\"%%define %s %d\\n\", c, v) >>file;
 819                 } else if (file ~ /\\.mak\$/) {
 820                     n = -v ? \"\" : \"!\";
 821                     printf(\"%s%s=yes\\n\", n, c) >>file;
 822                 } else if (file ~ /\\.texi\$/) {
 823                     pre = -v ? \"\" : \"@c \";
 824                     yesno = \$2;
 825                     c2 = tolower(c);
 826                     gsub(/_/, \"-\", c2);
 827                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 828                 }
 829             }
 830         }"
 831 }
 832
 833 print_enabled(){
 834     suf=$1
 835     shift
 836     for v; do
 837         enabled $v && printf "%s\n" ${v%$suf}
 838     done
 839 }
 840
 841 append(){
 842     var=$1
 843     shift
 844     eval "$var=\"\$$var $*\""
 845 }
 846
 847 prepend(){
 848     var=$1
 849     shift
 850     eval "$var=\"$* \$$var\""
 851 }
 852
 853 reverse () {
 854     eval '
 855         reverse_out=
 856         for v in $'$1'; do
 857             reverse_out="$v $reverse_out"
 858         done
 859         '$1'=$reverse_out
 860     '
 861 }
 862
 863 # keeps the last occurence of each non-unique item
 864 unique(){
 865     unique_out=
 866     eval unique_in=\$$1
 867     reverse unique_in
 868     for v in $unique_in; do
 869         # " $unique_out" +space such that every item is surrounded with spaces
 870         case " $unique_out" in *" $v "*) continue; esac  # already in list
 871         unique_out="$unique_out$v "
 872     done
 873     reverse unique_out
 874     eval $1=\$unique_out
 875 }
 876
 877 resolve(){
 878     resolve_out=
 879     eval resolve_in=\$$1
 880     for v in $resolve_in; do
 881         eval 'resolve_out="$resolve_out$'$v' "'
 882     done
 883     eval $1=\$resolve_out
 884 }
 885
 886 add_cppflags(){
 887     append CPPFLAGS "$@"
 888 }
 889
 890 add_cflags(){
 891     append CFLAGS $($cflags_filter "$@")
 892 }
 893
 894 add_cflags_headers(){
 895     append CFLAGS_HEADERS $($cflags_filter "$@")
 896 }
 897
 898 add_cxxflags(){
 899     append CXXFLAGS $($cflags_filter "$@")
 900 }
 901
 902 add_asflags(){
 903     append ASFLAGS $($asflags_filter "$@")
 904 }
 905
 906 add_objcflags(){
 907     append OBJCFLAGS $($objcflags_filter "$@")
 908 }
 909
 910 add_ldflags(){
 911     append LDFLAGS $($ldflags_filter "$@")
 912 }
 913
 914 add_ldexeflags(){
 915     append LDEXEFLAGS $($ldflags_filter "$@")
 916 }
 917
 918 add_ldsoflags(){
 919     append LDSOFLAGS $($ldflags_filter "$@")
 920 }
 921
 922 add_stripflags(){
 923     append ASMSTRIPFLAGS "$@"
 924 }
 925
 926 add_extralibs(){
 927     prepend extralibs $($ldflags_filter "$@")
 928 }
 929
 930 add_host_cppflags(){
 931     append host_cppflags "$@"
 932 }
 933
 934 add_host_cflags(){
 935     append host_cflags $($host_cflags_filter "$@")
 936 }
 937
 938 add_host_ldflags(){
 939     append host_ldflags $($host_ldflags_filter "$@")
 940 }
 941
 942 add_compat(){
 943     append compat_objs $1
 944     shift
 945     map 'add_cppflags -D$v' "$@"
 946 }
 947
 948 test_cmd(){
 949     log "$@"
 950     "$@" >> $logfile 2>&1
 951 }
 952
 953 test_stat(){
 954     log test_stat "$@"
 955     stat "$1" >> $logfile 2>&1
 956 }
 957
 958 cc_o(){
 959     eval printf '%s\\n' $CC_O
 960 }
 961
 962 cc_e(){
 963     eval printf '%s\\n' $CC_E
 964 }
 965
 966 test_cc(){
 967     log test_cc "$@"
 968     cat > $TMPC
 969     log_file $TMPC
 970     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 971 }
 972
 973 test_cxx(){
 974     log test_cxx "$@"
 975     cat > $TMPCPP
 976     log_file $TMPCPP
 977     test_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 978 }
 979
 980 test_objcc(){
 981     log test_objcc "$@"
 982     cat > $TMPM
 983     log_file $TMPM
 984     test_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
 985 }
 986
 987 test_cpp(){
 988     log test_cpp "$@"
 989     cat > $TMPC
 990     log_file $TMPC
 991     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 992 }
 993
 994 as_o(){
 995     eval printf '%s\\n' $AS_O
 996 }
 997
 998 test_as(){
 999     log test_as "$@"
1000     cat > $TMPS
1001     log_file $TMPS
1002     test_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
1003 }
1004
1005 x86asm_o(){
1006     eval printf '%s\\n' $X86ASM_O
1007 }
1008
1009 test_x86asm(){
1010     log test_x86asm "$@"
1011     echo "$1" > $TMPASM
1012     log_file $TMPASM
1013     shift
1014     test_cmd $x86asmexe $X86ASMFLAGS -Werror "$@" $(x86asm_o $TMPO) $TMPASM
1015 }
1016
1017 check_cmd(){
1018     log check_cmd "$@"
1019     cmd=$1
1020     disabled $cmd && return
1021     disable $cmd
1022     test_cmd $@ && enable $cmd
1023 }
1024
1025 check_as(){
1026     log check_as "$@"
1027     name=$1
1028     code=$2
1029     shift 2
1030     disable $name
1031     test_as $@ <<EOF && enable $name
1032 $code
1033 EOF
1034 }
1035
1036 check_inline_asm(){
1037     log check_inline_asm "$@"
1038     name="$1"
1039     code="$2"
1040     shift 2
1041     disable $name
1042     test_cc "$@" <<EOF && enable $name
1043 void foo(void){ __asm__ volatile($code); }
1044 EOF
1045 }
1046
1047 check_inline_asm_flags(){
1048     log check_inline_asm_flags "$@"
1049     name="$1"
1050     code="$2"
1051     flags=''
1052     shift 2
1053     while [ "$1" != "" ]; do
1054       append flags $1
1055       shift
1056     done;
1057     disable $name
1058     cat > $TMPC <<EOF
1059 void foo(void){ __asm__ volatile($code); }
1060 EOF
1061     log_file $TMPC
1062     test_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
1063     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
1064 }
1065
1066 check_insn(){
1067     log check_insn "$@"
1068     check_inline_asm ${1}_inline "\"$2\""
1069     check_as ${1}_external "$2"
1070 }
1071
1072 check_x86asm(){
1073     log check_x86asm "$@"
1074     name=$1
1075     shift
1076     disable $name
1077     test_x86asm "$@" && enable $name
1078 }
1079
1080 ld_o(){
1081     eval printf '%s\\n' $LD_O
1082 }
1083
1084 test_ld(){
1085     log test_ld "$@"
1086     type=$1
1087     shift 1
1088     flags=$(filter_out '-l*|*.so' $@)
1089     libs=$(filter '-l*|*.so' $@)
1090     test_$type $($cflags_filter $flags) || return
1091     flags=$($ldflags_filter $flags)
1092     libs=$($ldflags_filter $libs)
1093     test_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1094 }
1095
1096 check_ld(){
1097     log check_ld "$@"
1098     type=$1
1099     name=$2
1100     shift 2
1101     disable $name
1102     test_ld $type $@ && enable $name
1103 }
1104
1105 print_include(){
1106     hdr=$1
1107     test "${hdr%.h}" = "${hdr}" &&
1108         echo "#include $hdr"    ||
1109         echo "#include <$hdr>"
1110 }
1111
1112 test_code(){
1113     log test_code "$@"
1114     check=$1
1115     headers=$2
1116     code=$3
1117     shift 3
1118     {
1119         for hdr in $headers; do
1120             print_include $hdr
1121         done
1122         echo "int main(void) { $code; return 0; }"
1123     } | test_$check "$@"
1124 }
1125
1126 check_cppflags(){
1127     log check_cppflags "$@"
1128     test_cpp "$@" <<EOF && append CPPFLAGS "$@"
1129 #include <stdlib.h>
1130 EOF
1131 }
1132
1133 test_cflags(){
1134     log test_cflags "$@"
1135     set -- $($cflags_filter "$@")
1136     test_cc "$@" <<EOF
1137 int x;
1138 EOF
1139 }
1140
1141 check_cflags(){
1142     log check_cflags "$@"
1143     test_cflags "$@" && add_cflags "$@"
1144 }
1145
1146 check_cxxflags(){
1147     log check_cxxflags "$@"
1148     set -- $($cflags_filter "$@")
1149     test_cxx "$@" <<EOF && append CXXFLAGS "$@"
1150 int x;
1151 EOF
1152 }
1153
1154 test_objcflags(){
1155     log test_objcflags "$@"
1156     set -- $($objcflags_filter "$@")
1157     test_objcc "$@" <<EOF
1158 int x;
1159 EOF
1160 }
1161
1162 check_objcflags(){
1163     log check_objcflags "$@"
1164     test_objcflags "$@" && add_objcflags "$@"
1165 }
1166
1167 test_ldflags(){
1168     log test_ldflags "$@"
1169     set -- $($ldflags_filter "$@")
1170     test_ld "cc" "$@" <<EOF
1171 int main(void){ return 0; }
1172 EOF
1173 }
1174
1175 check_ldflags(){
1176     log check_ldflags "$@"
1177     test_ldflags "$@" && add_ldflags "$@"
1178 }
1179
1180 test_stripflags(){
1181     log test_stripflags "$@"
1182     # call test_cc to get a fresh TMPO
1183     test_cc <<EOF
1184 int main(void) { return 0; }
1185 EOF
1186     test_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1187 }
1188
1189 check_stripflags(){
1190     log check_stripflags "$@"
1191     test_stripflags "$@" && add_stripflags "$@"
1192 }
1193
1194 check_headers(){
1195     log check_headers "$@"
1196     headers=$1
1197     shift
1198     disable_sanitized $headers
1199     {
1200         for hdr in $headers; do
1201             print_include $hdr
1202         done
1203         echo "int x;"
1204     } | test_cpp "$@" && enable_sanitized $headers
1205 }
1206
1207 check_header_objcc(){
1208     log check_header_objcc "$@"
1209     rm -f -- "$TMPO"
1210     header=$1
1211     shift
1212     disable_sanitized $header
1213     {
1214        echo "#include <$header>"
1215        echo "int main(void) { return 0; }"
1216     } | test_objcc && test_stat "$TMPO" && enable_sanitized $header
1217 }
1218
1219 check_apple_framework(){
1220     log check_apple_framework "$@"
1221     framework="$1"
1222     name="$(tolower $framework)"
1223     header="${framework}/${framework}.h"
1224     disable $name
1225     check_header_objcc $header &&
1226         enable $name && eval ${name}_extralibs='"-framework $framework"'
1227 }
1228
1229 check_func(){
1230     log check_func "$@"
1231     func=$1
1232     shift
1233     disable $func
1234     test_ld "cc" "$@" <<EOF && enable $func
1235 extern int $func();
1236 int main(void){ $func(); }
1237 EOF
1238 }
1239
1240 check_complexfunc(){
1241     log check_complexfunc "$@"
1242     func=$1
1243     narg=$2
1244     shift 2
1245     test $narg = 2 && args="f, g" || args="f * I"
1246     disable $func
1247     test_ld "cc" "$@" <<EOF && enable $func
1248 #include <complex.h>
1249 #include <math.h>
1250 float foo(complex float f, complex float g) { return $func($args); }
1251 int main(void){ return (int) foo; }
1252 EOF
1253 }
1254
1255 check_mathfunc(){
1256     log check_mathfunc "$@"
1257     func=$1
1258     narg=$2
1259     shift 2
1260     test $narg = 2 && args="f, g" || args="f"
1261     disable $func
1262     test_ld "cc" "$@" <<EOF && enable $func
1263 #include <math.h>
1264 float foo(float f, float g) { return $func($args); }
1265 int main(void){ return (int) foo; }
1266 EOF
1267 }
1268
1269 check_func_headers(){
1270     log check_func_headers "$@"
1271     headers=$1
1272     funcs=$2
1273     shift 2
1274     {
1275         for hdr in $headers; do
1276             print_include $hdr
1277         done
1278         echo "#include <stdint.h>"
1279         for func in $funcs; do
1280             echo "long check_$func(void) { return (long) $func; }"
1281         done
1282         echo "int main(void) { int ret = 0;"
1283         # LTO could optimize out the test functions without this
1284         for func in $funcs; do
1285             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1286         done
1287         echo "return ret; }"
1288     } | test_ld "cc" "$@" && enable $funcs && enable_sanitized $headers
1289 }
1290
1291 check_class_headers_cpp(){
1292     log check_class_headers_cpp "$@"
1293     headers=$1
1294     classes=$2
1295     shift 2
1296     {
1297         for hdr in $headers; do
1298             echo "#include <$hdr>"
1299         done
1300         echo "int main(void) { "
1301         i=1
1302         for class in $classes; do
1303             echo "$class obj$i;"
1304             i=$(expr $i + 1)
1305         done
1306         echo "return 0; }"
1307     } | test_ld "cxx" "$@" && enable $funcs && enable_sanitized $headers
1308 }
1309
1310 test_cpp_condition(){
1311     log test_cpp_condition "$@"
1312     header=$1
1313     condition=$2
1314     shift 2
1315     test_cpp "$@" <<EOF
1316 #include <$header>
1317 #if !($condition)
1318 #error "unsatisfied condition: $condition"
1319 #endif
1320 EOF
1321 }
1322
1323 check_cpp_condition(){
1324     log check_cpp_condition "$@"
1325     name=$1
1326     shift 1
1327     disable $name
1328     test_cpp_condition "$@" && enable $name
1329 }
1330
1331 test_cflags_cc(){
1332     log test_cflags_cc "$@"
1333     flags=$1
1334     header=$2
1335     condition=$3
1336     shift 3
1337     set -- $($cflags_filter "$flags")
1338     test_cc "$@" <<EOF
1339 #include <$header>
1340 #if !($condition)
1341 #error "unsatisfied condition: $condition"
1342 #endif
1343 EOF
1344 }
1345
1346 check_lib(){
1347     log check_lib "$@"
1348     name="$1"
1349     headers="$2"
1350     funcs="$3"
1351     shift 3
1352     disable $name
1353     check_func_headers "$headers" "$funcs" "$@" &&
1354         enable $name && eval ${name}_extralibs="\$@"
1355 }
1356
1357 check_lib_cpp(){
1358     log check_lib_cpp "$@"
1359     name="$1"
1360     headers="$2"
1361     classes="$3"
1362     shift 3
1363     disable $name
1364     check_class_headers_cpp "$headers" "$classes" "$@" &&
1365         enable $name && eval ${name}_extralibs="\$@"
1366 }
1367
1368 test_pkg_config(){
1369     log test_pkg_config "$@"
1370     name="$1"
1371     pkg_version="$2"
1372     pkg="${2%% *}"
1373     headers="$3"
1374     funcs="$4"
1375     shift 4
1376     disable $name
1377     test_cmd $pkg_config --exists --print-errors $pkg_version || return
1378     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1379     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1380     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1381         enable $name &&
1382         set_sanitized "${name}_cflags"    $pkg_cflags &&
1383         set_sanitized "${name}_extralibs" $pkg_libs
1384 }
1385
1386 check_pkg_config(){
1387     log check_pkg_config "$@"
1388     name="$1"
1389     test_pkg_config "$@" &&
1390         eval add_cflags \$${name}_cflags
1391 }
1392
1393 test_exec(){
1394     test_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1395 }
1396
1397 check_exec_crash(){
1398     log check_exec_crash "$@"
1399     code=$(cat)
1400
1401     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1402     # are safe but may not be available everywhere.  Thus we use
1403     # raise(SIGTERM) instead.  The check is run in a subshell so we
1404     # can redirect the "Terminated" message from the shell.  SIGBUS
1405     # is not defined by standard C so it is used conditionally.
1406
1407     (test_exec "$@") >> $logfile 2>&1 <<EOF
1408 #include <signal.h>
1409 static void sighandler(int sig){
1410     raise(SIGTERM);
1411 }
1412 int foo(void){
1413     $code
1414 }
1415 int (*func_ptr)(void) = foo;
1416 int main(void){
1417     signal(SIGILL, sighandler);
1418     signal(SIGFPE, sighandler);
1419     signal(SIGSEGV, sighandler);
1420 #ifdef SIGBUS
1421     signal(SIGBUS, sighandler);
1422 #endif
1423     return func_ptr();
1424 }
1425 EOF
1426 }
1427
1428 check_type(){
1429     log check_type "$@"
1430     headers=$1
1431     type=$2
1432     shift 2
1433     disable_sanitized "$type"
1434     test_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1435 }
1436
1437 check_struct(){
1438     log check_struct "$@"
1439     headers=$1
1440     struct=$2
1441     member=$3
1442     shift 3
1443     disable_sanitized "${struct}_${member}"
1444     test_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1445         enable_sanitized "${struct}_${member}"
1446 }
1447
1448 check_builtin(){
1449     log check_builtin "$@"
1450     name=$1
1451     headers=$2
1452     builtin=$3
1453     shift 3
1454     disable "$name"
1455     test_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1456 }
1457
1458 check_compile_assert(){
1459     log check_compile_assert "$@"
1460     name=$1
1461     headers=$2
1462     condition=$3
1463     shift 3
1464     disable "$name"
1465     test_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1466 }
1467
1468 check_cc(){
1469     log check_cc "$@"
1470     name=$1
1471     shift
1472     disable "$name"
1473     test_code cc "$@" && enable "$name"
1474 }
1475
1476 require(){
1477     log require "$@"
1478     name_version="$1"
1479     name="${1%% *}"
1480     shift
1481     check_lib $name "$@" || die "ERROR: $name_version not found"
1482 }
1483
1484 require_cc(){
1485     log require_cc "$@"
1486     name="$1"
1487     check_cc "$@" || die "ERROR: $name failed"
1488 }
1489
1490 require_cpp(){
1491     name="$1"
1492     headers="$2"
1493     classes="$3"
1494     shift 3
1495     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1496 }
1497
1498 require_headers(){
1499     log require_headers "$@"
1500     headers="$1"
1501     check_headers "$@" || die "ERROR: $headers not found"
1502 }
1503
1504 require_cpp_condition(){
1505     log require_cpp_condition "$@"
1506     condition="$3"
1507     check_cpp_condition "$@" || die "ERROR: $condition not satisfied"
1508 }
1509
1510 require_pkg_config(){
1511     log require_pkg_config "$@"
1512     pkg_version="$2"
1513     check_pkg_config "$@" || die "ERROR: $pkg_version not found using pkg-config$pkg_config_fail_message"
1514 }
1515
1516 hostcc_e(){
1517     eval printf '%s\\n' $HOSTCC_E
1518 }
1519
1520 hostcc_o(){
1521     eval printf '%s\\n' $HOSTCC_O
1522 }
1523
1524 test_host_cc(){
1525     log test_host_cc "$@"
1526     cat > $TMPC
1527     log_file $TMPC
1528     test_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1529 }
1530
1531 test_host_cpp(){
1532     log test_host_cpp "$@"
1533     cat > $TMPC
1534     log_file $TMPC
1535     test_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1536 }
1537
1538 check_host_cppflags(){
1539     log check_host_cppflags "$@"
1540     test_host_cpp "$@" <<EOF && append host_cppflags "$@"
1541 #include <stdlib.h>
1542 EOF
1543 }
1544
1545 check_host_cflags(){
1546     log check_host_cflags "$@"
1547     set -- $($host_cflags_filter "$@")
1548     test_host_cc "$@" <<EOF && append host_cflags "$@"
1549 int x;
1550 EOF
1551 }
1552
1553 test_host_cpp_condition(){
1554     log test_host_cpp_condition "$@"
1555     header=$1
1556     condition=$2
1557     shift 2
1558     test_host_cpp "$@" <<EOF
1559 #include <$header>
1560 #if !($condition)
1561 #error "unsatisfied condition: $condition"
1562 #endif
1563 EOF
1564 }
1565
1566 check_host_cpp_condition(){
1567     log check_host_cpp_condition "$@"
1568     name=$1
1569     shift 1
1570     disable $name
1571     test_host_cpp_condition "$@" && enable $name
1572 }
1573
1574 cp_if_changed(){
1575     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1576     mkdir -p "$(dirname $2)"
1577     cp -f "$1" "$2"
1578 }
1579
1580 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1581 # system-dependent things.
1582
1583 AVCODEC_COMPONENTS="
1584     bsfs
1585     decoders
1586     encoders
1587     hwaccels
1588     parsers
1589 "
1590
1591 AVDEVICE_COMPONENTS="
1592     indevs
1593     outdevs
1594 "
1595
1596 AVFILTER_COMPONENTS="
1597     filters
1598 "
1599
1600 AVFORMAT_COMPONENTS="
1601     demuxers
1602     muxers
1603     protocols
1604 "
1605
1606 COMPONENT_LIST="
1607     $AVCODEC_COMPONENTS
1608     $AVDEVICE_COMPONENTS
1609     $AVFILTER_COMPONENTS
1610     $AVFORMAT_COMPONENTS
1611 "
1612
1613 EXAMPLE_LIST="
1614     avio_dir_cmd_example
1615     avio_reading_example
1616     decode_audio_example
1617     decode_video_example
1618     demuxing_decoding_example
1619     encode_audio_example
1620     encode_video_example
1621     extract_mvs_example
1622     filter_audio_example
1623     filtering_audio_example
1624     filtering_video_example
1625     http_multiclient_example
1626     hw_decode_example
1627     metadata_example
1628     muxing_example
1629     qsvdec_example
1630     remuxing_example
1631     resampling_audio_example
1632     scaling_video_example
1633     transcode_aac_example
1634     transcoding_example
1635     vaapi_encode_example
1636     vaapi_transcode_example
1637 "
1638
1639 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1640     alsa
1641     appkit
1642     avfoundation
1643     bzlib
1644     coreimage
1645     iconv
1646     libxcb
1647     libxcb_shm
1648     libxcb_shape
1649     libxcb_xfixes
1650     lzma
1651     schannel
1652     sdl2
1653     securetransport
1654     sndio
1655     xlib
1656     zlib
1657 "
1658
1659 EXTERNAL_LIBRARY_GPL_LIST="
1660     avisynth
1661     frei0r
1662     libcdio
1663     libdavs2
1664     librubberband
1665     libvidstab
1666     libx264
1667     libx265
1668     libxavs
1669     libxvid
1670 "
1671
1672 EXTERNAL_LIBRARY_NONFREE_LIST="
1673     decklink
1674     libndi_newtek
1675     libfdk_aac
1676     openssl
1677     libtls
1678 "
1679
1680 EXTERNAL_LIBRARY_VERSION3_LIST="
1681     gmp
1682     liblensfun
1683     libopencore_amrnb
1684     libopencore_amrwb
1685     libvmaf
1686     libvo_amrwbenc
1687     mbedtls
1688     rkmpp
1689 "
1690
1691 EXTERNAL_LIBRARY_GPLV3_LIST="
1692     libsmbclient
1693 "
1694
1695 EXTERNAL_LIBRARY_LIST="
1696     $EXTERNAL_LIBRARY_GPL_LIST
1697     $EXTERNAL_LIBRARY_NONFREE_LIST
1698     $EXTERNAL_LIBRARY_VERSION3_LIST
1699     $EXTERNAL_LIBRARY_GPLV3_LIST
1700     chromaprint
1701     gcrypt
1702     gnutls
1703     jni
1704     ladspa
1705     libaom
1706     libass
1707     libbluray
1708     libbs2b
1709     libcaca
1710     libcelt
1711     libcodec2
1712     libdc1394
1713     libdrm
1714     libflite
1715     libfontconfig
1716     libfreetype
1717     libfribidi
1718     libgme
1719     libgsm
1720     libiec61883
1721     libilbc
1722     libjack
1723     libkvazaar
1724     libmodplug
1725     libmp3lame
1726     libmysofa
1727     libopencv
1728     libopenh264
1729     libopenjpeg
1730     libopenmpt
1731     libopus
1732     libpulse
1733     librsvg
1734     librtmp
1735     libshine
1736     libsmbclient
1737     libsnappy
1738     libsoxr
1739     libspeex
1740     libsrt
1741     libssh
1742     libtensorflow
1743     libtesseract
1744     libtheora
1745     libtwolame
1746     libv4l2
1747     libvorbis
1748     libvpx
1749     libwavpack
1750     libwebp
1751     libxml2
1752     libzimg
1753     libzmq
1754     libzvbi
1755     lv2
1756     mediacodec
1757     openal
1758     opengl
1759     vapoursynth
1760 "
1761
1762 HWACCEL_AUTODETECT_LIBRARY_LIST="
1763     amf
1764     audiotoolbox
1765     crystalhd
1766     cuda
1767     cuvid
1768     d3d11va
1769     dxva2
1770     ffnvcodec
1771     nvdec
1772     nvenc
1773     vaapi
1774     vdpau
1775     videotoolbox
1776     v4l2_m2m
1777     xvmc
1778 "
1779
1780 # catchall list of things that require external libs to link
1781 EXTRALIBS_LIST="
1782     cpu_init
1783     cws2fws
1784 "
1785
1786 HWACCEL_LIBRARY_NONFREE_LIST="
1787     cuda_sdk
1788     libnpp
1789 "
1790
1791 HWACCEL_LIBRARY_LIST="
1792     $HWACCEL_LIBRARY_NONFREE_LIST
1793     libmfx
1794     mmal
1795     omx
1796     opencl
1797 "
1798
1799 DOCUMENT_LIST="
1800     doc
1801     htmlpages
1802     manpages
1803     podpages
1804     txtpages
1805 "
1806
1807 FEATURE_LIST="
1808     ftrapv
1809     gray
1810     hardcoded_tables
1811     omx_rpi
1812     runtime_cpudetect
1813     safe_bitstream_reader
1814     shared
1815     small
1816     static
1817     swscale_alpha
1818 "
1819
1820 # this list should be kept in linking order
1821 LIBRARY_LIST="
1822     avdevice
1823     avfilter
1824     swscale
1825     postproc
1826     avformat
1827     avcodec
1828     swresample
1829     avresample
1830     avutil
1831 "
1832
1833 LICENSE_LIST="
1834     gpl
1835     nonfree
1836     version3
1837 "
1838
1839 PROGRAM_LIST="
1840     ffplay
1841     ffprobe
1842     ffmpeg
1843 "
1844
1845 SUBSYSTEM_LIST="
1846     dct
1847     dwt
1848     error_resilience
1849     faan
1850     fast_unaligned
1851     fft
1852     lsp
1853     lzo
1854     mdct
1855     pixelutils
1856     network
1857     rdft
1858 "
1859
1860 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1861 CONFIG_LIST="
1862     $DOCUMENT_LIST
1863     $EXAMPLE_LIST
1864     $EXTERNAL_LIBRARY_LIST
1865     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1866     $HWACCEL_LIBRARY_LIST
1867     $HWACCEL_AUTODETECT_LIBRARY_LIST
1868     $FEATURE_LIST
1869     $LICENSE_LIST
1870     $LIBRARY_LIST
1871     $PROGRAM_LIST
1872     $SUBSYSTEM_LIST
1873     autodetect
1874     fontconfig
1875     linux_perf
1876     memory_poisoning
1877     neon_clobber_test
1878     ossfuzz
1879     pic
1880     thumb
1881     valgrind_backtrace
1882     xmm_clobber_test
1883     $COMPONENT_LIST
1884 "
1885
1886 THREADS_LIST="
1887     pthreads
1888     os2threads
1889     w32threads
1890 "
1891
1892 ATOMICS_LIST="
1893     atomics_gcc
1894     atomics_suncc
1895     atomics_win32
1896 "
1897
1898 AUTODETECT_LIBS="
1899     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1900     $HWACCEL_AUTODETECT_LIBRARY_LIST
1901     $THREADS_LIST
1902 "
1903
1904 ARCH_LIST="
1905     aarch64
1906     alpha
1907     arm
1908     avr32
1909     avr32_ap
1910     avr32_uc
1911     bfin
1912     ia64
1913     m68k
1914     mips
1915     mips64
1916     parisc
1917     ppc
1918     ppc64
1919     s390
1920     sh4
1921     sparc
1922     sparc64
1923     tilegx
1924     tilepro
1925     tomi
1926     x86
1927     x86_32
1928     x86_64
1929 "
1930
1931 ARCH_EXT_LIST_ARM="
1932     armv5te
1933     armv6
1934     armv6t2
1935     armv8
1936     neon
1937     vfp
1938     vfpv3
1939     setend
1940 "
1941
1942 ARCH_EXT_LIST_MIPS="
1943     mipsfpu
1944     mips32r2
1945     mips32r5
1946     mips64r2
1947     mips32r6
1948     mips64r6
1949     mipsdsp
1950     mipsdspr2
1951     msa
1952 "
1953
1954 ARCH_EXT_LIST_LOONGSON="
1955     loongson2
1956     loongson3
1957     mmi
1958 "
1959
1960 ARCH_EXT_LIST_X86_SIMD="
1961     aesni
1962     amd3dnow
1963     amd3dnowext
1964     avx
1965     avx2
1966     avx512
1967     fma3
1968     fma4
1969     mmx
1970     mmxext
1971     sse
1972     sse2
1973     sse3
1974     sse4
1975     sse42
1976     ssse3
1977     xop
1978 "
1979
1980 ARCH_EXT_LIST_PPC="
1981     altivec
1982     dcbzl
1983     ldbrx
1984     power8
1985     ppc4xx
1986     vsx
1987 "
1988
1989 ARCH_EXT_LIST_X86="
1990     $ARCH_EXT_LIST_X86_SIMD
1991     cpunop
1992     i686
1993 "
1994
1995 ARCH_EXT_LIST="
1996     $ARCH_EXT_LIST_ARM
1997     $ARCH_EXT_LIST_PPC
1998     $ARCH_EXT_LIST_X86
1999     $ARCH_EXT_LIST_MIPS
2000     $ARCH_EXT_LIST_LOONGSON
2001 "
2002
2003 ARCH_FEATURES="
2004     aligned_stack
2005     fast_64bit
2006     fast_clz
2007     fast_cmov
2008     local_aligned
2009     simd_align_16
2010     simd_align_32
2011     simd_align_64
2012 "
2013
2014 BUILTIN_LIST="
2015     atomic_cas_ptr
2016     machine_rw_barrier
2017     MemoryBarrier
2018     mm_empty
2019     rdtsc
2020     sem_timedwait
2021     sync_val_compare_and_swap
2022 "
2023 HAVE_LIST_CMDLINE="
2024     inline_asm
2025     symver
2026     x86asm
2027 "
2028
2029 HAVE_LIST_PUB="
2030     bigendian
2031     fast_unaligned
2032 "
2033
2034 HEADERS_LIST="
2035     arpa_inet_h
2036     asm_types_h
2037     cdio_paranoia_h
2038     cdio_paranoia_paranoia_h
2039     cuda_h
2040     dispatch_dispatch_h
2041     dev_bktr_ioctl_bt848_h
2042     dev_bktr_ioctl_meteor_h
2043     dev_ic_bt8xx_h
2044     dev_video_bktr_ioctl_bt848_h
2045     dev_video_meteor_ioctl_meteor_h
2046     direct_h
2047     dirent_h
2048     dxgidebug_h
2049     dxva_h
2050     ES2_gl_h
2051     gsm_h
2052     io_h
2053     linux_perf_event_h
2054     machine_ioctl_bt848_h
2055     machine_ioctl_meteor_h
2056     malloc_h
2057     opencv2_core_core_c_h
2058     OpenGL_gl3_h
2059     poll_h
2060     sys_param_h
2061     sys_resource_h
2062     sys_select_h
2063     sys_soundcard_h
2064     sys_time_h
2065     sys_un_h
2066     sys_videoio_h
2067     termios_h
2068     udplite_h
2069     unistd_h
2070     valgrind_valgrind_h
2071     windows_h
2072     winsock2_h
2073 "
2074
2075 INTRINSICS_LIST="
2076     intrinsics_neon
2077 "
2078
2079 COMPLEX_FUNCS="
2080     cabs
2081     cexp
2082 "
2083
2084 MATH_FUNCS="
2085     atanf
2086     atan2f
2087     cbrt
2088     cbrtf
2089     copysign
2090     cosf
2091     erf
2092     exp2
2093     exp2f
2094     expf
2095     hypot
2096     isfinite
2097     isinf
2098     isnan
2099     ldexpf
2100     llrint
2101     llrintf
2102     log2
2103     log2f
2104     log10f
2105     lrint
2106     lrintf
2107     powf
2108     rint
2109     round
2110     roundf
2111     sinf
2112     trunc
2113     truncf
2114 "
2115
2116 SYSTEM_FEATURES="
2117     dos_paths
2118     libc_msvcrt
2119     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2120     section_data_rel_ro
2121     threads
2122     uwp
2123     winrt
2124 "
2125
2126 SYSTEM_FUNCS="
2127     access
2128     aligned_malloc
2129     arc4random
2130     clock_gettime
2131     closesocket
2132     CommandLineToArgvW
2133     fcntl
2134     getaddrinfo
2135     gethrtime
2136     getopt
2137     GetProcessAffinityMask
2138     GetProcessMemoryInfo
2139     GetProcessTimes
2140     getrusage
2141     GetSystemTimeAsFileTime
2142     gettimeofday
2143     glob
2144     glXGetProcAddress
2145     gmtime_r
2146     inet_aton
2147     isatty
2148     kbhit
2149     localtime_r
2150     lstat
2151     lzo1x_999_compress
2152     mach_absolute_time
2153     MapViewOfFile
2154     memalign
2155     mkstemp
2156     mmap
2157     mprotect
2158     nanosleep
2159     PeekNamedPipe
2160     posix_memalign
2161     pthread_cancel
2162     sched_getaffinity
2163     SecItemImport
2164     SetConsoleTextAttribute
2165     SetConsoleCtrlHandler
2166     setmode
2167     setrlimit
2168     Sleep
2169     strerror_r
2170     sysconf
2171     sysctl
2172     usleep
2173     UTGetOSTypeFromString
2174     VirtualAlloc
2175     wglGetProcAddress
2176 "
2177
2178 SYSTEM_LIBRARIES="
2179     bcrypt
2180     vaapi_drm
2181     vaapi_x11
2182     vdpau_x11
2183 "
2184
2185 TOOLCHAIN_FEATURES="
2186     as_arch_directive
2187     as_dn_directive
2188     as_fpu_directive
2189     as_func
2190     as_object_arch
2191     asm_mod_q
2192     blocks_extension
2193     ebp_available
2194     ebx_available
2195     gnu_as
2196     gnu_windres
2197     ibm_asm
2198     inline_asm_direct_symbol_refs
2199     inline_asm_labels
2200     inline_asm_nonlocal_labels
2201     pragma_deprecated
2202     rsync_contimeout
2203     symver_asm_label
2204     symver_gnu_asm
2205     vfp_args
2206     xform_asm
2207     xmm_clobbers
2208 "
2209
2210 TYPES_LIST="
2211     kCMVideoCodecType_HEVC
2212     socklen_t
2213     struct_addrinfo
2214     struct_group_source_req
2215     struct_ip_mreq_source
2216     struct_ipv6_mreq
2217     struct_msghdr_msg_flags
2218     struct_pollfd
2219     struct_rusage_ru_maxrss
2220     struct_sctp_event_subscribe
2221     struct_sockaddr_in6
2222     struct_sockaddr_sa_len
2223     struct_sockaddr_storage
2224     struct_stat_st_mtim_tv_nsec
2225     struct_v4l2_frmivalenum_discrete
2226 "
2227
2228 HAVE_LIST="
2229     $ARCH_EXT_LIST
2230     $(add_suffix _external $ARCH_EXT_LIST)
2231     $(add_suffix _inline   $ARCH_EXT_LIST)
2232     $ARCH_FEATURES
2233     $BUILTIN_LIST
2234     $COMPLEX_FUNCS
2235     $HAVE_LIST_CMDLINE
2236     $HAVE_LIST_PUB
2237     $HEADERS_LIST
2238     $INTRINSICS_LIST
2239     $MATH_FUNCS
2240     $SYSTEM_FEATURES
2241     $SYSTEM_FUNCS
2242     $SYSTEM_LIBRARIES
2243     $THREADS_LIST
2244     $TOOLCHAIN_FEATURES
2245     $TYPES_LIST
2246     makeinfo
2247     makeinfo_html
2248     opencl_d3d11
2249     opencl_drm_arm
2250     opencl_drm_beignet
2251     opencl_dxva2
2252     opencl_vaapi_beignet
2253     opencl_vaapi_intel_media
2254     perl
2255     pod2man
2256     texi2html
2257 "
2258
2259 # options emitted with CONFIG_ prefix but not available on the command line
2260 CONFIG_EXTRA="
2261     aandcttables
2262     ac3dsp
2263     adts_header
2264     audio_frame_queue
2265     audiodsp
2266     blockdsp
2267     bswapdsp
2268     cabac
2269     cbs
2270     cbs_h264
2271     cbs_h265
2272     cbs_mpeg2
2273     cbs_vp9
2274     dirac_parse
2275     dnn
2276     dvprofile
2277     exif
2278     faandct
2279     faanidct
2280     fdctdsp
2281     flacdsp
2282     fmtconvert
2283     frame_thread_encoder
2284     g722dsp
2285     golomb
2286     gplv3
2287     h263dsp
2288     h264chroma
2289     h264dsp
2290     h264parse
2291     h264pred
2292     h264qpel
2293     hevcparse
2294     hpeldsp
2295     huffman
2296     huffyuvdsp
2297     huffyuvencdsp
2298     idctdsp
2299     iirfilter
2300     mdct15
2301     intrax8
2302     iso_media
2303     ividsp
2304     jpegtables
2305     lgplv3
2306     libx262
2307     llauddsp
2308     llviddsp
2309     llvidencdsp
2310     lpc
2311     lzf
2312     me_cmp
2313     mpeg_er
2314     mpegaudio
2315     mpegaudiodsp
2316     mpegaudioheader
2317     mpegvideo
2318     mpegvideoenc
2319     mss34dsp
2320     pixblockdsp
2321     qpeldsp
2322     qsv
2323     qsvdec
2324     qsvenc
2325     qsvvpp
2326     rangecoder
2327     riffdec
2328     riffenc
2329     rtpdec
2330     rtpenc_chain
2331     rv34dsp
2332     sinewin
2333     snappy
2334     srtp
2335     startcode
2336     texturedsp
2337     texturedspenc
2338     tpeldsp
2339     vaapi_1
2340     vaapi_encode
2341     vc1dsp
2342     videodsp
2343     vp3dsp
2344     vp56dsp
2345     vp8dsp
2346     wma_freqs
2347     wmv2dsp
2348 "
2349
2350 CMDLINE_SELECT="
2351     $ARCH_EXT_LIST
2352     $CONFIG_LIST
2353     $HAVE_LIST_CMDLINE
2354     $THREADS_LIST
2355     asm
2356     cross_compile
2357     debug
2358     extra_warnings
2359     logging
2360     lto
2361     optimizations
2362     rpath
2363     stripping
2364 "
2365
2366 PATHS_LIST="
2367     bindir
2368     datadir
2369     docdir
2370     incdir
2371     libdir
2372     mandir
2373     pkgconfigdir
2374     prefix
2375     shlibdir
2376     install_name_dir
2377 "
2378
2379 CMDLINE_SET="
2380     $PATHS_LIST
2381     ar
2382     arch
2383     as
2384     assert_level
2385     build_suffix
2386     cc
2387     objcc
2388     cpu
2389     cross_prefix
2390     custom_allocator
2391     cxx
2392     dep_cc
2393     doxygen
2394     env
2395     extra_version
2396     gas
2397     host_cc
2398     host_cflags
2399     host_extralibs
2400     host_ld
2401     host_ldflags
2402     host_os
2403     ignore_tests
2404     install
2405     ld
2406     ln_s
2407     logfile
2408     malloc_prefix
2409     nm
2410     optflags
2411     nvcc
2412     nvccflags
2413     pkg_config
2414     pkg_config_flags
2415     progs_suffix
2416     random_seed
2417     ranlib
2418     samples
2419     strip
2420     sws_max_filter_size
2421     sysinclude
2422     sysroot
2423     target_exec
2424     target_os
2425     target_path
2426     target_samples
2427     tempprefix
2428     toolchain
2429     valgrind
2430     x86asmexe
2431 "
2432
2433 CMDLINE_APPEND="
2434     extra_cflags
2435     extra_cxxflags
2436     extra_objcflags
2437     host_cppflags
2438 "
2439
2440 # code dependency declarations
2441
2442 # architecture extensions
2443
2444 armv5te_deps="arm"
2445 armv6_deps="arm"
2446 armv6t2_deps="arm"
2447 armv8_deps="aarch64"
2448 neon_deps_any="aarch64 arm"
2449 intrinsics_neon_deps="neon"
2450 vfp_deps_any="aarch64 arm"
2451 vfpv3_deps="vfp"
2452 setend_deps="arm"
2453
2454 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2455
2456 altivec_deps="ppc"
2457 dcbzl_deps="ppc"
2458 ldbrx_deps="ppc"
2459 ppc4xx_deps="ppc"
2460 vsx_deps="altivec"
2461 power8_deps="vsx"
2462
2463 loongson2_deps="mips"
2464 loongson3_deps="mips"
2465 mips32r2_deps="mips"
2466 mips32r5_deps="mips"
2467 mips32r6_deps="mips"
2468 mips64r2_deps="mips"
2469 mips64r6_deps="mips"
2470 mipsfpu_deps="mips"
2471 mipsdsp_deps="mips"
2472 mipsdspr2_deps="mips"
2473 mmi_deps="mips"
2474 msa_deps="mipsfpu"
2475
2476 cpunop_deps="i686"
2477 x86_64_select="i686"
2478 x86_64_suggest="fast_cmov"
2479
2480 amd3dnow_deps="mmx"
2481 amd3dnowext_deps="amd3dnow"
2482 i686_deps="x86"
2483 mmx_deps="x86"
2484 mmxext_deps="mmx"
2485 sse_deps="mmxext"
2486 sse2_deps="sse"
2487 sse3_deps="sse2"
2488 ssse3_deps="sse3"
2489 sse4_deps="ssse3"
2490 sse42_deps="sse4"
2491 aesni_deps="sse42"
2492 avx_deps="sse42"
2493 xop_deps="avx"
2494 fma3_deps="avx"
2495 fma4_deps="avx"
2496 avx2_deps="avx"
2497 avx512_deps="avx2"
2498
2499 mmx_external_deps="x86asm"
2500 mmx_inline_deps="inline_asm x86"
2501 mmx_suggest="mmx_external mmx_inline"
2502
2503 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2504     eval dep=\$${ext}_deps
2505     eval ${ext}_external_deps='"${dep}_external"'
2506     eval ${ext}_inline_deps='"${dep}_inline"'
2507     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2508 done
2509
2510 aligned_stack_if_any="aarch64 ppc x86"
2511 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2512 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2513 fast_unaligned_if_any="aarch64 ppc x86"
2514 simd_align_16_if_any="altivec neon sse"
2515 simd_align_32_if_any="avx"
2516 simd_align_64_if_any="avx512"
2517
2518 # system capabilities
2519 linux_perf_deps="linux_perf_event_h"
2520 symver_if_any="symver_asm_label symver_gnu_asm"
2521 valgrind_backtrace_conflict="optimizations"
2522 valgrind_backtrace_deps="valgrind_valgrind_h"
2523
2524 # threading support
2525 atomics_gcc_if="sync_val_compare_and_swap"
2526 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2527 atomics_win32_if="MemoryBarrier"
2528 atomics_native_if_any="$ATOMICS_LIST"
2529 w32threads_deps="atomics_native"
2530 threads_if_any="$THREADS_LIST"
2531
2532 # subsystems
2533 cbs_h264_select="cbs golomb"
2534 cbs_h265_select="cbs golomb"
2535 cbs_mpeg2_select="cbs"
2536 cbs_vp9_select="cbs"
2537 dct_select="rdft"
2538 dirac_parse_select="golomb"
2539 dnn_suggest="libtensorflow"
2540 error_resilience_select="me_cmp"
2541 faandct_deps="faan"
2542 faandct_select="fdctdsp"
2543 faanidct_deps="faan"
2544 faanidct_select="idctdsp"
2545 h264dsp_select="startcode"
2546 hevcparse_select="golomb"
2547 frame_thread_encoder_deps="encoders threads"
2548 intrax8_select="blockdsp idctdsp"
2549 mdct_select="fft"
2550 mdct15_select="fft"
2551 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2552 mpeg_er_select="error_resilience"
2553 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2554 mpegaudiodsp_select="dct"
2555 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2556 mpegvideoenc_select="aandcttables me_cmp mpegvideo pixblockdsp qpeldsp"
2557 vc1dsp_select="h264chroma qpeldsp startcode"
2558 rdft_select="fft"
2559
2560 # decoders / encoders
2561 aac_decoder_select="adts_header mdct15 mdct sinewin"
2562 aac_fixed_decoder_select="adts_header mdct sinewin"
2563 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2564 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2565 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2566 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2567 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2568 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2569 adpcm_g722_decoder_select="g722dsp"
2570 adpcm_g722_encoder_select="g722dsp"
2571 aic_decoder_select="golomb idctdsp"
2572 alac_encoder_select="lpc"
2573 als_decoder_select="bswapdsp"
2574 amrnb_decoder_select="lsp"
2575 amrwb_decoder_select="lsp"
2576 amv_decoder_select="sp5x_decoder exif"
2577 amv_encoder_select="jpegtables mpegvideoenc"
2578 ape_decoder_select="bswapdsp llauddsp"
2579 apng_decoder_deps="zlib"
2580 apng_encoder_deps="zlib"
2581 apng_encoder_select="llvidencdsp"
2582 aptx_decoder_select="audio_frame_queue"
2583 aptx_encoder_select="audio_frame_queue"
2584 aptx_hd_decoder_select="audio_frame_queue"
2585 aptx_hd_encoder_select="audio_frame_queue"
2586 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2587 asv1_encoder_select="aandcttables bswapdsp fdctdsp pixblockdsp"
2588 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2589 asv2_encoder_select="aandcttables bswapdsp fdctdsp pixblockdsp"
2590 atrac1_decoder_select="mdct sinewin"
2591 atrac3_decoder_select="mdct"
2592 atrac3p_decoder_select="mdct sinewin"
2593 atrac9_decoder_select="mdct"
2594 avrn_decoder_select="exif jpegtables"
2595 bink_decoder_select="blockdsp hpeldsp"
2596 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2597 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2598 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2599 clearvideo_decoder_select="idctdsp"
2600 cllc_decoder_select="bswapdsp"
2601 comfortnoise_encoder_select="lpc"
2602 cook_decoder_select="audiodsp mdct sinewin"
2603 cscd_decoder_select="lzo"
2604 cscd_decoder_suggest="zlib"
2605 dca_decoder_select="mdct"
2606 dds_decoder_select="texturedsp"
2607 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2608 dnxhd_decoder_select="blockdsp idctdsp"
2609 dnxhd_encoder_select="blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2610 dolby_e_decoder_select="mdct"
2611 dvvideo_decoder_select="dvprofile idctdsp"
2612 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2613 dxa_decoder_deps="zlib"
2614 dxv_decoder_select="lzf texturedsp"
2615 eac3_decoder_select="ac3_decoder"
2616 eac3_encoder_select="ac3_encoder"
2617 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2618 eatgq_decoder_select="aandcttables"
2619 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2620 exr_decoder_deps="zlib"
2621 ffv1_decoder_select="rangecoder"
2622 ffv1_encoder_select="rangecoder"
2623 ffvhuff_decoder_select="huffyuv_decoder"
2624 ffvhuff_encoder_select="huffyuv_encoder"
2625 fic_decoder_select="golomb"
2626 flac_decoder_select="flacdsp"
2627 flac_encoder_select="bswapdsp flacdsp lpc"
2628 flashsv2_decoder_deps="zlib"
2629 flashsv2_encoder_deps="zlib"
2630 flashsv_decoder_deps="zlib"
2631 flashsv_encoder_deps="zlib"
2632 flv_decoder_select="h263_decoder"
2633 flv_encoder_select="h263_encoder"
2634 fourxm_decoder_select="blockdsp bswapdsp"
2635 fraps_decoder_select="bswapdsp huffman"
2636 g2m_decoder_deps="zlib"
2637 g2m_decoder_select="blockdsp idctdsp jpegtables"
2638 g729_decoder_select="audiodsp"
2639 h261_decoder_select="mpegvideo"
2640 h261_encoder_select="mpegvideoenc"
2641 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2642 h263_encoder_select="h263dsp mpegvideoenc"
2643 h263i_decoder_select="h263_decoder"
2644 h263p_decoder_select="h263_decoder"
2645 h263p_encoder_select="h263_encoder"
2646 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2647 h264_decoder_suggest="error_resilience"
2648 hap_decoder_select="snappy texturedsp"
2649 hap_encoder_deps="libsnappy"
2650 hap_encoder_select="texturedspenc"
2651 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2652 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2653 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2654 iac_decoder_select="imc_decoder"
2655 imc_decoder_select="bswapdsp fft mdct sinewin"
2656 indeo3_decoder_select="hpeldsp"
2657 indeo4_decoder_select="ividsp"
2658 indeo5_decoder_select="ividsp"
2659 interplay_video_decoder_select="hpeldsp"
2660 jpegls_decoder_select="mjpeg_decoder"
2661 jv_decoder_select="blockdsp"
2662 lagarith_decoder_select="llviddsp"
2663 ljpeg_encoder_select="idctdsp jpegtables mpegvideoenc"
2664 magicyuv_decoder_select="llviddsp"
2665 magicyuv_encoder_select="llvidencdsp"
2666 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2667 metasound_decoder_select="lsp mdct sinewin"
2668 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2669 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2670 mjpeg_encoder_select="jpegtables mpegvideoenc"
2671 mjpegb_decoder_select="mjpeg_decoder"
2672 mlp_decoder_select="mlp_parser"
2673 mlp_encoder_select="lpc"
2674 motionpixels_decoder_select="bswapdsp"
2675 mp1_decoder_select="mpegaudio"
2676 mp1float_decoder_select="mpegaudio"
2677 mp2_decoder_select="mpegaudio"
2678 mp2float_decoder_select="mpegaudio"
2679 mp3_decoder_select="mpegaudio"
2680 mp3adu_decoder_select="mpegaudio"
2681 mp3adufloat_decoder_select="mpegaudio"
2682 mp3float_decoder_select="mpegaudio"
2683 mp3on4_decoder_select="mpegaudio"
2684 mp3on4float_decoder_select="mpegaudio"
2685 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2686 mpc8_decoder_select="mpegaudiodsp"
2687 mpegvideo_decoder_select="mpegvideo"
2688 mpeg1video_decoder_select="mpegvideo"
2689 mpeg1video_encoder_select="mpegvideoenc h263dsp"
2690 mpeg2video_decoder_select="mpegvideo"
2691 mpeg2video_encoder_select="mpegvideoenc h263dsp"
2692 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2693 mpeg4_encoder_select="h263_encoder"
2694 msa1_decoder_select="mss34dsp"
2695 mscc_decoder_deps="zlib"
2696 msmpeg4v1_decoder_select="h263_decoder"
2697 msmpeg4v2_decoder_select="h263_decoder"
2698 msmpeg4v2_encoder_select="h263_encoder"
2699 msmpeg4v3_decoder_select="h263_decoder"
2700 msmpeg4v3_encoder_select="h263_encoder"
2701 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2702 mts2_decoder_select="mss34dsp"
2703 mwsc_decoder_deps="zlib"
2704 mxpeg_decoder_select="mjpeg_decoder"
2705 nellymoser_decoder_select="mdct sinewin"
2706 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2707 nuv_decoder_select="idctdsp lzo"
2708 on2avc_decoder_select="mdct"
2709 opus_decoder_deps="swresample"
2710 opus_decoder_select="mdct15"
2711 opus_encoder_select="audio_frame_queue mdct15"
2712 png_decoder_deps="zlib"
2713 png_encoder_deps="zlib"
2714 png_encoder_select="llvidencdsp"
2715 prores_decoder_select="blockdsp idctdsp"
2716 prores_encoder_select="fdctdsp"
2717 qcelp_decoder_select="lsp"
2718 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2719 ra_144_decoder_select="audiodsp"
2720 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2721 ralf_decoder_select="golomb"
2722 rawvideo_decoder_select="bswapdsp"
2723 rscc_decoder_deps="zlib"
2724 rtjpeg_decoder_select="me_cmp"
2725 rv10_decoder_select="h263_decoder"
2726 rv10_encoder_select="h263_encoder"
2727 rv20_decoder_select="h263_decoder"
2728 rv20_encoder_select="h263_encoder"
2729 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2730 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2731 screenpresso_decoder_deps="zlib"
2732 shorten_decoder_select="bswapdsp"
2733 sipr_decoder_select="lsp"
2734 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2735 snow_encoder_select="dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2736 sonic_decoder_select="golomb rangecoder"
2737 sonic_encoder_select="golomb rangecoder"
2738 sonic_ls_encoder_select="golomb rangecoder"
2739 sp5x_decoder_select="mjpeg_decoder"
2740 srgc_decoder_deps="zlib"
2741 svq1_decoder_select="hpeldsp"
2742 svq1_encoder_select="hpeldsp me_cmp mpegvideoenc"
2743 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2744 svq3_decoder_suggest="zlib"
2745 tak_decoder_select="audiodsp"
2746 tdsc_decoder_deps="zlib"
2747 tdsc_decoder_select="mjpeg_decoder"
2748 theora_decoder_select="vp3_decoder"
2749 thp_decoder_select="mjpeg_decoder"
2750 tiff_decoder_suggest="zlib lzma"
2751 tiff_encoder_suggest="zlib"
2752 truehd_decoder_select="mlp_parser"
2753 truehd_encoder_select="lpc"
2754 truemotion2_decoder_select="bswapdsp"
2755 truespeech_decoder_select="bswapdsp"
2756 tscc_decoder_deps="zlib"
2757 twinvq_decoder_select="mdct lsp sinewin"
2758 txd_decoder_select="texturedsp"
2759 utvideo_decoder_select="bswapdsp llviddsp"
2760 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2761 vble_decoder_select="llviddsp"
2762 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2763 vc1image_decoder_select="vc1_decoder"
2764 vorbis_decoder_select="mdct"
2765 vorbis_encoder_select="audio_frame_queue mdct"
2766 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2767 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2768 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2769 vp6a_decoder_select="vp6_decoder"
2770 vp6f_decoder_select="vp6_decoder"
2771 vp7_decoder_select="h264pred videodsp vp8dsp"
2772 vp8_decoder_select="h264pred videodsp vp8dsp"
2773 vp9_decoder_select="videodsp vp9_parser vp9_superframe_split_bsf"
2774 wcmv_decoder_deps="zlib"
2775 webp_decoder_select="vp8_decoder exif"
2776 wmalossless_decoder_select="llauddsp"
2777 wmapro_decoder_select="mdct sinewin wma_freqs"
2778 wmav1_decoder_select="mdct sinewin wma_freqs"
2779 wmav1_encoder_select="mdct sinewin wma_freqs"
2780 wmav2_decoder_select="mdct sinewin wma_freqs"
2781 wmav2_encoder_select="mdct sinewin wma_freqs"
2782 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2783 wmv1_decoder_select="h263_decoder"
2784 wmv1_encoder_select="h263_encoder"
2785 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2786 wmv2_encoder_select="h263_encoder wmv2dsp"
2787 wmv3_decoder_select="vc1_decoder"
2788 wmv3image_decoder_select="wmv3_decoder"
2789 xma1_decoder_select="wmapro_decoder"
2790 xma2_decoder_select="wmapro_decoder"
2791 zerocodec_decoder_deps="zlib"
2792 zlib_decoder_deps="zlib"
2793 zlib_encoder_deps="zlib"
2794 zmbv_decoder_deps="zlib"
2795 zmbv_encoder_deps="zlib"
2796
2797 # hardware accelerators
2798 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2799 cuda_deps="ffnvcodec"
2800 cuvid_deps="ffnvcodec"
2801 d3d11va_deps="dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2802 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2803 ffnvcodec_deps_any="libdl LoadLibrary"
2804 nvdec_deps="ffnvcodec"
2805 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2806 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2807 xvmc_deps="X11_extensions_XvMClib_h"
2808
2809 h263_vaapi_hwaccel_deps="vaapi"
2810 h263_vaapi_hwaccel_select="h263_decoder"
2811 h263_videotoolbox_hwaccel_deps="videotoolbox"
2812 h263_videotoolbox_hwaccel_select="h263_decoder"
2813 h264_d3d11va_hwaccel_deps="d3d11va"
2814 h264_d3d11va_hwaccel_select="h264_decoder"
2815 h264_d3d11va2_hwaccel_deps="d3d11va"
2816 h264_d3d11va2_hwaccel_select="h264_decoder"
2817 h264_dxva2_hwaccel_deps="dxva2"
2818 h264_dxva2_hwaccel_select="h264_decoder"
2819 h264_nvdec_hwaccel_deps="nvdec"
2820 h264_nvdec_hwaccel_select="h264_decoder"
2821 h264_vaapi_hwaccel_deps="vaapi"
2822 h264_vaapi_hwaccel_select="h264_decoder"
2823 h264_vdpau_hwaccel_deps="vdpau"
2824 h264_vdpau_hwaccel_select="h264_decoder"
2825 h264_videotoolbox_hwaccel_deps="videotoolbox"
2826 h264_videotoolbox_hwaccel_select="h264_decoder"
2827 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2828 hevc_d3d11va_hwaccel_select="hevc_decoder"
2829 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2830 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2831 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2832 hevc_dxva2_hwaccel_select="hevc_decoder"
2833 hevc_nvdec_hwaccel_deps="nvdec"
2834 hevc_nvdec_hwaccel_select="hevc_decoder"
2835 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2836 hevc_vaapi_hwaccel_select="hevc_decoder"
2837 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2838 hevc_vdpau_hwaccel_select="hevc_decoder"
2839 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2840 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2841 mjpeg_nvdec_hwaccel_deps="nvdec"
2842 mjpeg_nvdec_hwaccel_select="mjpeg_decoder"
2843 mjpeg_vaapi_hwaccel_deps="vaapi"
2844 mjpeg_vaapi_hwaccel_select="mjpeg_decoder"
2845 mpeg_xvmc_hwaccel_deps="xvmc"
2846 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2847 mpeg1_nvdec_hwaccel_deps="nvdec"
2848 mpeg1_nvdec_hwaccel_select="mpeg1video_decoder"
2849 mpeg1_vdpau_hwaccel_deps="vdpau"
2850 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2851 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2852 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2853 mpeg1_xvmc_hwaccel_deps="xvmc"
2854 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2855 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2856 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2857 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2858 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2859 mpeg2_dxva2_hwaccel_deps="dxva2"
2860 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2861 mpeg2_nvdec_hwaccel_deps="nvdec"
2862 mpeg2_nvdec_hwaccel_select="mpeg2video_decoder"
2863 mpeg2_vaapi_hwaccel_deps="vaapi"
2864 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2865 mpeg2_vdpau_hwaccel_deps="vdpau"
2866 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2867 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2868 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2869 mpeg2_xvmc_hwaccel_deps="xvmc"
2870 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2871 mpeg4_nvdec_hwaccel_deps="nvdec"
2872 mpeg4_nvdec_hwaccel_select="mpeg4_decoder"
2873 mpeg4_vaapi_hwaccel_deps="vaapi"
2874 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2875 mpeg4_vdpau_hwaccel_deps="vdpau"
2876 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2877 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2878 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2879 vc1_d3d11va_hwaccel_deps="d3d11va"
2880 vc1_d3d11va_hwaccel_select="vc1_decoder"
2881 vc1_d3d11va2_hwaccel_deps="d3d11va"
2882 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2883 vc1_dxva2_hwaccel_deps="dxva2"
2884 vc1_dxva2_hwaccel_select="vc1_decoder"
2885 vc1_nvdec_hwaccel_deps="nvdec"
2886 vc1_nvdec_hwaccel_select="vc1_decoder"
2887 vc1_vaapi_hwaccel_deps="vaapi"
2888 vc1_vaapi_hwaccel_select="vc1_decoder"
2889 vc1_vdpau_hwaccel_deps="vdpau"
2890 vc1_vdpau_hwaccel_select="vc1_decoder"
2891 vp8_nvdec_hwaccel_deps="nvdec"
2892 vp8_nvdec_hwaccel_select="vp8_decoder"
2893 vp8_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferVP8"
2894 vp8_vaapi_hwaccel_select="vp8_decoder"
2895 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2896 vp9_d3d11va_hwaccel_select="vp9_decoder"
2897 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2898 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2899 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2900 vp9_dxva2_hwaccel_select="vp9_decoder"
2901 vp9_nvdec_hwaccel_deps="nvdec"
2902 vp9_nvdec_hwaccel_select="vp9_decoder"
2903 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2904 vp9_vaapi_hwaccel_select="vp9_decoder"
2905 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2906 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2907 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2908 wmv3_nvdec_hwaccel_select="vc1_nvdec_hwaccel"
2909 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2910 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2911
2912 # hardware-accelerated codecs
2913 omx_deps="libdl pthreads"
2914 omx_rpi_select="omx"
2915 qsv_deps="libmfx"
2916 qsvdec_select="qsv"
2917 qsvenc_select="qsv"
2918 qsvvpp_select="qsv"
2919 vaapi_encode_deps="vaapi"
2920 v4l2_m2m_deps="linux_videodev2_h sem_timedwait"
2921
2922 hwupload_cuda_filter_deps="ffnvcodec"
2923 scale_npp_filter_deps="ffnvcodec libnpp"
2924 scale_cuda_filter_deps="cuda_sdk"
2925 thumbnail_cuda_filter_deps="cuda_sdk"
2926
2927 amf_deps_any="libdl LoadLibrary"
2928 nvenc_deps="ffnvcodec"
2929 nvenc_deps_any="libdl LoadLibrary"
2930 nvenc_encoder_deps="nvenc"
2931
2932 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
2933 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
2934 h264_amf_encoder_deps="amf"
2935 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2936 h264_cuvid_decoder_deps="cuvid"
2937 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2938 h264_mediacodec_decoder_deps="mediacodec"
2939 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2940 h264_mmal_decoder_deps="mmal"
2941 h264_nvenc_encoder_deps="nvenc"
2942 h264_omx_encoder_deps="omx"
2943 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec"
2944 h264_qsv_encoder_select="qsvenc"
2945 h264_rkmpp_decoder_deps="rkmpp"
2946 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
2947 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2948 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
2949 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
2950 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
2951 hevc_amf_encoder_deps="amf"
2952 hevc_cuvid_decoder_deps="cuvid"
2953 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2954 hevc_mediacodec_decoder_deps="mediacodec"
2955 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2956 hevc_nvenc_encoder_deps="nvenc"
2957 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec"
2958 hevc_qsv_encoder_select="hevcparse qsvenc"
2959 hevc_rkmpp_decoder_deps="rkmpp"
2960 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
2961 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2962 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
2963 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
2964 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
2965 mjpeg_cuvid_decoder_deps="cuvid"
2966 mjpeg_qsv_encoder_deps="libmfx"
2967 mjpeg_qsv_encoder_select="qsvenc"
2968 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2969 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2970 mpeg1_cuvid_decoder_deps="cuvid"
2971 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
2972 mpeg2_crystalhd_decoder_select="crystalhd"
2973 mpeg2_cuvid_decoder_deps="cuvid"
2974 mpeg2_mmal_decoder_deps="mmal"
2975 mpeg2_mediacodec_decoder_deps="mediacodec"
2976 mpeg2_qsv_decoder_select="qsvdec mpegvideo_parser"
2977 mpeg2_qsv_encoder_select="qsvenc"
2978 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2979 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
2980 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
2981 mpeg4_crystalhd_decoder_select="crystalhd"
2982 mpeg4_cuvid_decoder_deps="cuvid"
2983 mpeg4_mediacodec_decoder_deps="mediacodec"
2984 mpeg4_mmal_decoder_deps="mmal"
2985 mpeg4_omx_encoder_deps="omx"
2986 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2987 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2988 msmpeg4_crystalhd_decoder_select="crystalhd"
2989 nvenc_h264_encoder_select="h264_nvenc_encoder"
2990 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2991 vc1_crystalhd_decoder_select="crystalhd"
2992 vc1_cuvid_decoder_deps="cuvid"
2993 vc1_mmal_decoder_deps="mmal"
2994 vc1_qsv_decoder_select="qsvdec vc1_parser"
2995 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
2996 vp8_cuvid_decoder_deps="cuvid"
2997 vp8_mediacodec_decoder_deps="mediacodec"
2998 vp8_qsv_decoder_select="qsvdec vp8_parser"
2999 vp8_rkmpp_decoder_deps="rkmpp"
3000 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
3001 vp8_vaapi_encoder_select="vaapi_encode"
3002 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
3003 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
3004 vp9_cuvid_decoder_deps="cuvid"
3005 vp9_mediacodec_decoder_deps="mediacodec"
3006 vp9_rkmpp_decoder_deps="rkmpp"
3007 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
3008 vp9_vaapi_encoder_select="vaapi_encode"
3009 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
3010 wmv3_crystalhd_decoder_select="crystalhd"
3011
3012 # parsers
3013 aac_parser_select="adts_header"
3014 h264_parser_select="golomb h264dsp h264parse"
3015 hevc_parser_select="hevcparse"
3016 mpegaudio_parser_select="mpegaudioheader"
3017 mpegvideo_parser_select="mpegvideo"
3018 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
3019 vc1_parser_select="vc1dsp"
3020
3021 # bitstream_filters
3022 aac_adtstoasc_bsf_select="adts_header"
3023 eac3_core_bsf_select="ac3_parser"
3024 filter_units_bsf_select="cbs"
3025 h264_metadata_bsf_deps="const_nan"
3026 h264_metadata_bsf_select="cbs_h264"
3027 h264_redundant_pps_bsf_select="cbs_h264"
3028 hevc_metadata_bsf_select="cbs_h265"
3029 mjpeg2jpeg_bsf_select="jpegtables"
3030 mpeg2_metadata_bsf_select="cbs_mpeg2"
3031 trace_headers_bsf_select="cbs"
3032 vp9_metadata_bsf_select="cbs_vp9"
3033
3034 # external libraries
3035 aac_at_decoder_deps="audiotoolbox"
3036 aac_at_decoder_select="aac_adtstoasc_bsf"
3037 ac3_at_decoder_deps="audiotoolbox"
3038 ac3_at_decoder_select="ac3_parser"
3039 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
3040 alac_at_decoder_deps="audiotoolbox"
3041 amr_nb_at_decoder_deps="audiotoolbox"
3042 avisynth_deps_any="libdl LoadLibrary"
3043 avisynth_demuxer_deps="avisynth"
3044 avisynth_demuxer_select="riffdec"
3045 eac3_at_decoder_deps="audiotoolbox"
3046 eac3_at_decoder_select="ac3_parser"
3047 gsm_ms_at_decoder_deps="audiotoolbox"
3048 ilbc_at_decoder_deps="audiotoolbox"
3049 mp1_at_decoder_deps="audiotoolbox"
3050 mp2_at_decoder_deps="audiotoolbox"
3051 mp3_at_decoder_deps="audiotoolbox"
3052 mp1_at_decoder_select="mpegaudioheader"
3053 mp2_at_decoder_select="mpegaudioheader"
3054 mp3_at_decoder_select="mpegaudioheader"
3055 pcm_alaw_at_decoder_deps="audiotoolbox"
3056 pcm_mulaw_at_decoder_deps="audiotoolbox"
3057 qdmc_at_decoder_deps="audiotoolbox"
3058 qdm2_at_decoder_deps="audiotoolbox"
3059 aac_at_encoder_deps="audiotoolbox"
3060 aac_at_encoder_select="audio_frame_queue"
3061 alac_at_encoder_deps="audiotoolbox"
3062 alac_at_encoder_select="audio_frame_queue"
3063 ilbc_at_encoder_deps="audiotoolbox"
3064 ilbc_at_encoder_select="audio_frame_queue"
3065 pcm_alaw_at_encoder_deps="audiotoolbox"
3066 pcm_alaw_at_encoder_select="audio_frame_queue"
3067 pcm_mulaw_at_encoder_deps="audiotoolbox"
3068 pcm_mulaw_at_encoder_select="audio_frame_queue"
3069 chromaprint_muxer_deps="chromaprint"
3070 h264_videotoolbox_encoder_deps="pthreads"
3071 h264_videotoolbox_encoder_select="videotoolbox_encoder"
3072 hevc_videotoolbox_encoder_deps="pthreads"
3073 hevc_videotoolbox_encoder_select="videotoolbox_encoder"
3074 libaom_av1_decoder_deps="libaom"
3075 libaom_av1_encoder_deps="libaom"
3076 libaom_av1_encoder_select="extract_extradata_bsf"
3077 libcelt_decoder_deps="libcelt"
3078 libcodec2_decoder_deps="libcodec2"
3079 libcodec2_encoder_deps="libcodec2"
3080 libdavs2_decoder_deps="libdavs2"
3081 libfdk_aac_decoder_deps="libfdk_aac"
3082 libfdk_aac_encoder_deps="libfdk_aac"
3083 libfdk_aac_encoder_select="audio_frame_queue"
3084 libgme_demuxer_deps="libgme"
3085 libgsm_decoder_deps="libgsm"
3086 libgsm_encoder_deps="libgsm"
3087 libgsm_ms_decoder_deps="libgsm"
3088 libgsm_ms_encoder_deps="libgsm"
3089 libilbc_decoder_deps="libilbc"
3090 libilbc_encoder_deps="libilbc"
3091 libkvazaar_encoder_deps="libkvazaar"
3092 libmodplug_demuxer_deps="libmodplug"
3093 libmp3lame_encoder_deps="libmp3lame"
3094 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
3095 libopencore_amrnb_decoder_deps="libopencore_amrnb"
3096 libopencore_amrnb_encoder_deps="libopencore_amrnb"
3097 libopencore_amrnb_encoder_select="audio_frame_queue"
3098 libopencore_amrwb_decoder_deps="libopencore_amrwb"
3099 libopenh264_decoder_deps="libopenh264"
3100 libopenh264_decoder_select="h264_mp4toannexb_bsf"
3101 libopenh264_encoder_deps="libopenh264"
3102 libopenjpeg_decoder_deps="libopenjpeg"
3103 libopenjpeg_encoder_deps="libopenjpeg"
3104 libopenmpt_demuxer_deps="libopenmpt"
3105 libopus_decoder_deps="libopus"
3106 libopus_encoder_deps="libopus"
3107 libopus_encoder_select="audio_frame_queue"
3108 librsvg_decoder_deps="librsvg"
3109 libshine_encoder_deps="libshine"
3110 libshine_encoder_select="audio_frame_queue"
3111 libspeex_decoder_deps="libspeex"
3112 libspeex_encoder_deps="libspeex"
3113 libspeex_encoder_select="audio_frame_queue"
3114 libtheora_encoder_deps="libtheora"
3115 libtwolame_encoder_deps="libtwolame"
3116 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
3117 libvorbis_decoder_deps="libvorbis"
3118 libvorbis_encoder_deps="libvorbis libvorbisenc"
3119 libvorbis_encoder_select="audio_frame_queue"
3120 libvpx_vp8_decoder_deps="libvpx"
3121 libvpx_vp8_encoder_deps="libvpx"
3122 libvpx_vp9_decoder_deps="libvpx"
3123 libvpx_vp9_encoder_deps="libvpx"
3124 libwavpack_encoder_deps="libwavpack"
3125 libwavpack_encoder_select="audio_frame_queue"
3126 libwebp_encoder_deps="libwebp"
3127 libwebp_anim_encoder_deps="libwebp"
3128 libx262_encoder_deps="libx262"
3129 libx264_encoder_deps="libx264"
3130 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
3131 libx264rgb_encoder_select="libx264_encoder"
3132 libx265_encoder_deps="libx265"
3133 libxavs_encoder_deps="libxavs"
3134 libxvid_encoder_deps="libxvid"
3135 libzvbi_teletext_decoder_deps="libzvbi"
3136 vapoursynth_demuxer_deps="vapoursynth"
3137 videotoolbox_suggest="coreservices"
3138 videotoolbox_deps="corefoundation coremedia corevideo"
3139 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
3140
3141 # demuxers / muxers
3142 ac3_demuxer_select="ac3_parser"
3143 aiff_muxer_select="iso_media"
3144 asf_demuxer_select="riffdec"
3145 asf_o_demuxer_select="riffdec"
3146 asf_muxer_select="riffenc"
3147 asf_stream_muxer_select="asf_muxer"
3148 avi_demuxer_select="iso_media riffdec exif"
3149 avi_muxer_select="riffenc"
3150 caf_demuxer_select="iso_media riffdec"
3151 caf_muxer_select="iso_media"
3152 dash_muxer_select="mp4_muxer"
3153 dash_demuxer_deps="libxml2"
3154 dirac_demuxer_select="dirac_parser"
3155 dts_demuxer_select="dca_parser"
3156 dtshd_demuxer_select="dca_parser"
3157 dv_demuxer_select="dvprofile"
3158 dv_muxer_select="dvprofile"
3159 dxa_demuxer_select="riffdec"
3160 eac3_demuxer_select="ac3_parser"
3161 f4v_muxer_select="mov_muxer"
3162 fifo_muxer_deps="threads"
3163 flac_demuxer_select="flac_parser"
3164 hds_muxer_select="flv_muxer"
3165 hls_muxer_select="mpegts_muxer"
3166 hls_muxer_suggest="gcrypt openssl"
3167 image2_alias_pix_demuxer_select="image2_demuxer"
3168 image2_brender_pix_demuxer_select="image2_demuxer"
3169 ipod_muxer_select="mov_muxer"
3170 ismv_muxer_select="mov_muxer"
3171 matroska_audio_muxer_select="matroska_muxer"
3172 matroska_demuxer_select="iso_media riffdec"
3173 matroska_demuxer_suggest="bzlib lzo zlib"
3174 matroska_muxer_select="iso_media riffenc"
3175 mmf_muxer_select="riffenc"
3176 mov_demuxer_select="iso_media riffdec"
3177 mov_demuxer_suggest="zlib"
3178 mov_muxer_select="iso_media riffenc rtpenc_chain"
3179 mp3_demuxer_select="mpegaudio_parser"
3180 mp3_muxer_select="mpegaudioheader"
3181 mp4_muxer_select="mov_muxer"
3182 mpegts_demuxer_select="iso_media"
3183 mpegts_muxer_select="adts_muxer latm_muxer"
3184 mpegtsraw_demuxer_select="mpegts_demuxer"
3185 mxf_d10_muxer_select="mxf_muxer"
3186 mxf_opatom_muxer_select="mxf_muxer"
3187 nut_muxer_select="riffenc"
3188 nuv_demuxer_select="riffdec"
3189 oga_muxer_select="ogg_muxer"
3190 ogg_demuxer_select="dirac_parse"
3191 ogv_muxer_select="ogg_muxer"
3192 opus_muxer_select="ogg_muxer"
3193 psp_muxer_select="mov_muxer"
3194 rtp_demuxer_select="sdp_demuxer"
3195 rtp_muxer_select="golomb"
3196 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3197 rtsp_demuxer_select="http_protocol rtpdec"
3198 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3199 sap_demuxer_select="sdp_demuxer"
3200 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3201 sdp_demuxer_select="rtpdec"
3202 smoothstreaming_muxer_select="ismv_muxer"
3203 spdif_demuxer_select="adts_header"
3204 spdif_muxer_select="adts_header"
3205 spx_muxer_select="ogg_muxer"
3206 swf_demuxer_suggest="zlib"
3207 tak_demuxer_select="tak_parser"
3208 tg2_muxer_select="mov_muxer"
3209 tgp_muxer_select="mov_muxer"
3210 vobsub_demuxer_select="mpegps_demuxer"
3211 w64_demuxer_select="wav_demuxer"
3212 w64_muxer_select="wav_muxer"
3213 wav_demuxer_select="riffdec"
3214 wav_muxer_select="riffenc"
3215 webm_muxer_select="iso_media riffenc"
3216 webm_dash_manifest_demuxer_select="matroska_demuxer"
3217 wtv_demuxer_select="mpegts_demuxer riffdec"
3218 wtv_muxer_select="mpegts_muxer riffenc"
3219 xmv_demuxer_select="riffdec"
3220 xwma_demuxer_select="riffdec"
3221
3222 # indevs / outdevs
3223 android_camera_indev_deps="android camera2ndk mediandk pthreads"
3224 android_camera_indev_extralibs="-landroid -lcamera2ndk -lmediandk"
3225 alsa_indev_deps="alsa"
3226 alsa_outdev_deps="alsa"
3227 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3228 avfoundation_indev_suggest="coregraphics applicationservices"
3229 avfoundation_indev_extralibs="-framework Foundation"
3230 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3231 caca_outdev_deps="libcaca"
3232 decklink_deps_any="libdl LoadLibrary"
3233 decklink_indev_deps="decklink threads"
3234 decklink_indev_extralibs="-lstdc++"
3235 decklink_outdev_deps="decklink threads"
3236 decklink_outdev_extralibs="-lstdc++"
3237 libndi_newtek_indev_deps="libndi_newtek"
3238 libndi_newtek_indev_extralibs="-lndi"
3239 libndi_newtek_outdev_deps="libndi_newtek"
3240 libndi_newtek_outdev_extralibs="-lndi"
3241 dshow_indev_deps="IBaseFilter"
3242 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3243 fbdev_indev_deps="linux_fb_h"
3244 fbdev_outdev_deps="linux_fb_h"
3245 gdigrab_indev_deps="CreateDIBSection"
3246 gdigrab_indev_extralibs="-lgdi32"
3247 gdigrab_indev_select="bmp_decoder"
3248 iec61883_indev_deps="libiec61883"
3249 jack_indev_deps="libjack"
3250 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3251 kmsgrab_indev_deps="libdrm"
3252 lavfi_indev_deps="avfilter"
3253 libcdio_indev_deps="libcdio"
3254 libdc1394_indev_deps="libdc1394"
3255 openal_indev_deps="openal"
3256 opengl_outdev_deps="opengl"
3257 oss_indev_deps_any="sys_soundcard_h"
3258 oss_outdev_deps_any="sys_soundcard_h"
3259 pulse_indev_deps="libpulse"
3260 pulse_outdev_deps="libpulse"
3261 sdl2_outdev_deps="sdl2"
3262 sndio_indev_deps="sndio"
3263 sndio_outdev_deps="sndio"
3264 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3265 v4l2_indev_suggest="libv4l2"
3266 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3267 v4l2_outdev_suggest="libv4l2"
3268 vfwcap_indev_deps="vfw32 vfwcap_defines"
3269 xcbgrab_indev_deps="libxcb"
3270 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3271 xv_outdev_deps="xlib"
3272
3273 # protocols
3274 async_protocol_deps="threads"
3275 bluray_protocol_deps="libbluray"
3276 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3277 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl mbedtls"
3278 ffrtmpcrypt_protocol_select="tcp_protocol"
3279 ffrtmphttp_protocol_conflict="librtmp_protocol"
3280 ffrtmphttp_protocol_select="http_protocol"
3281 ftp_protocol_select="tcp_protocol"
3282 gopher_protocol_select="network"
3283 http_protocol_select="tcp_protocol"
3284 http_protocol_suggest="zlib"
3285 httpproxy_protocol_select="tcp_protocol"
3286 httpproxy_protocol_suggest="zlib"
3287 https_protocol_select="tls_protocol"
3288 https_protocol_suggest="zlib"
3289 icecast_protocol_select="http_protocol"
3290 mmsh_protocol_select="http_protocol"
3291 mmst_protocol_select="network"
3292 rtmp_protocol_conflict="librtmp_protocol"
3293 rtmp_protocol_select="tcp_protocol"
3294 rtmp_protocol_suggest="zlib"
3295 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3296 rtmpe_protocol_suggest="zlib"
3297 rtmps_protocol_conflict="librtmp_protocol"
3298 rtmps_protocol_select="tls_protocol"
3299 rtmps_protocol_suggest="zlib"
3300 rtmpt_protocol_select="ffrtmphttp_protocol"
3301 rtmpt_protocol_suggest="zlib"
3302 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3303 rtmpte_protocol_suggest="zlib"
3304 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3305 rtmpts_protocol_suggest="zlib"
3306 rtp_protocol_select="udp_protocol"
3307 schannel_conflict="openssl gnutls libtls mbedtls"
3308 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3309 sctp_protocol_select="network"
3310 securetransport_conflict="openssl gnutls libtls mbedtls"
3311 srtp_protocol_select="rtp_protocol srtp"
3312 tcp_protocol_select="network"
3313 tls_protocol_deps_any="gnutls openssl schannel securetransport libtls mbedtls"
3314 tls_protocol_select="tcp_protocol"
3315 udp_protocol_select="network"
3316 udplite_protocol_select="network"
3317 unix_protocol_deps="sys_un_h"
3318 unix_protocol_select="network"
3319
3320 # external library protocols
3321 librtmp_protocol_deps="librtmp"
3322 librtmpe_protocol_deps="librtmp"
3323 librtmps_protocol_deps="librtmp"
3324 librtmpt_protocol_deps="librtmp"
3325 librtmpte_protocol_deps="librtmp"
3326 libsmbclient_protocol_deps="libsmbclient gplv3"
3327 libsrt_protocol_deps="libsrt"
3328 libsrt_protocol_select="network"
3329 libssh_protocol_deps="libssh"
3330 libtls_conflict="openssl gnutls mbedtls"
3331
3332 # filters
3333 afftfilt_filter_deps="avcodec"
3334 afftfilt_filter_select="fft"
3335 afir_filter_deps="avcodec"
3336 afir_filter_select="fft"
3337 amovie_filter_deps="avcodec avformat"
3338 aresample_filter_deps="swresample"
3339 ass_filter_deps="libass"
3340 atempo_filter_deps="avcodec"
3341 atempo_filter_select="rdft"
3342 avgblur_opencl_filter_deps="opencl"
3343 azmq_filter_deps="libzmq"
3344 blackframe_filter_deps="gpl"
3345 boxblur_filter_deps="gpl"
3346 boxblur_opencl_filter_deps="opencl gpl"
3347 bs2b_filter_deps="libbs2b"
3348 colormatrix_filter_deps="gpl"
3349 convolution_opencl_filter_deps="opencl"
3350 convolve_filter_deps="avcodec"
3351 convolve_filter_select="fft"
3352 coreimage_filter_deps="coreimage appkit"
3353 coreimage_filter_extralibs="-framework OpenGL"
3354 coreimagesrc_filter_deps="coreimage appkit"
3355 coreimagesrc_filter_extralibs="-framework OpenGL"
3356 cover_rect_filter_deps="avcodec avformat gpl"
3357 cropdetect_filter_deps="gpl"
3358 deconvolve_filter_deps="avcodec"
3359 deconvolve_filter_select="fft"
3360 deinterlace_qsv_filter_deps="libmfx"
3361 deinterlace_vaapi_filter_deps="vaapi"
3362 delogo_filter_deps="gpl"
3363 denoise_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3364 deshake_filter_select="pixelutils"
3365 dilation_opencl_filter_deps="opencl"
3366 drawtext_filter_deps="libfreetype"
3367 drawtext_filter_suggest="libfontconfig libfribidi"
3368 elbg_filter_deps="avcodec"
3369 eq_filter_deps="gpl"
3370 erosion_opencl_filter_deps="opencl"
3371 fftfilt_filter_deps="avcodec"
3372 fftfilt_filter_select="rdft"
3373 fftdnoiz_filter_deps="avcodec"
3374 fftdnoiz_filter_select="fft"
3375 find_rect_filter_deps="avcodec avformat gpl"
3376 firequalizer_filter_deps="avcodec"
3377 firequalizer_filter_select="rdft"
3378 flite_filter_deps="libflite"
3379 framerate_filter_select="pixelutils"
3380 frei0r_filter_deps="frei0r libdl"
3381 frei0r_src_filter_deps="frei0r libdl"
3382 fspp_filter_deps="gpl"
3383 geq_filter_deps="gpl"
3384 histeq_filter_deps="gpl"
3385 hqdn3d_filter_deps="gpl"
3386 interlace_filter_deps="gpl"
3387 kerndeint_filter_deps="gpl"
3388 ladspa_filter_deps="ladspa libdl"
3389 lensfun_filter_deps="liblensfun version3"
3390 lv2_filter_deps="lv2"
3391 mcdeint_filter_deps="avcodec gpl"
3392 movie_filter_deps="avcodec avformat"
3393 mpdecimate_filter_deps="gpl"
3394 mpdecimate_filter_select="pixelutils"
3395 mptestsrc_filter_deps="gpl"
3396 negate_filter_deps="lut_filter"
3397 nnedi_filter_deps="gpl"
3398 ocr_filter_deps="libtesseract"
3399 ocv_filter_deps="libopencv"
3400 openclsrc_filter_deps="opencl"
3401 overlay_opencl_filter_deps="opencl"
3402 overlay_qsv_filter_deps="libmfx"
3403 overlay_qsv_filter_select="qsvvpp"
3404 owdenoise_filter_deps="gpl"
3405 pan_filter_deps="swresample"
3406 perspective_filter_deps="gpl"
3407 phase_filter_deps="gpl"
3408 pp7_filter_deps="gpl"
3409 pp_filter_deps="gpl postproc"
3410 prewitt_opencl_filter_deps="opencl"
3411 procamp_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3412 program_opencl_filter_deps="opencl"
3413 pullup_filter_deps="gpl"
3414 removelogo_filter_deps="avcodec avformat swscale"
3415 repeatfields_filter_deps="gpl"
3416 resample_filter_deps="avresample"
3417 roberts_opencl_filter_deps="opencl"
3418 rubberband_filter_deps="librubberband"
3419 sab_filter_deps="gpl swscale"
3420 scale2ref_filter_deps="swscale"
3421 scale_filter_deps="swscale"
3422 scale_qsv_filter_deps="libmfx"
3423 select_filter_select="pixelutils"
3424 sharpness_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3425 showcqt_filter_deps="avcodec avformat swscale"
3426 showcqt_filter_suggest="libfontconfig libfreetype"
3427 showcqt_filter_select="fft"
3428 showfreqs_filter_deps="avcodec"
3429 showfreqs_filter_select="fft"
3430 showspectrum_filter_deps="avcodec"
3431 showspectrum_filter_select="fft"
3432 showspectrumpic_filter_deps="avcodec"
3433 showspectrumpic_filter_select="fft"
3434 signature_filter_deps="gpl avcodec avformat"
3435 smartblur_filter_deps="gpl swscale"
3436 sobel_opencl_filter_deps="opencl"
3437 sofalizer_filter_deps="libmysofa avcodec"
3438 sofalizer_filter_select="fft"
3439 spectrumsynth_filter_deps="avcodec"
3440 spectrumsynth_filter_select="fft"
3441 spp_filter_deps="gpl avcodec"
3442 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3443 sr_filter_deps="avformat swscale"
3444 sr_filter_select="dnn"
3445 stereo3d_filter_deps="gpl"
3446 subtitles_filter_deps="avformat avcodec libass"
3447 super2xsai_filter_deps="gpl"
3448 pixfmts_super2xsai_test_deps="super2xsai_filter"
3449 tinterlace_filter_deps="gpl"
3450 tinterlace_merge_test_deps="tinterlace_filter"
3451 tinterlace_pad_test_deps="tinterlace_filter"
3452 tonemap_filter_deps="const_nan"
3453 tonemap_opencl_filter_deps="opencl const_nan"
3454 unsharp_opencl_filter_deps="opencl"
3455 uspp_filter_deps="gpl avcodec"
3456 vaguedenoiser_filter_deps="gpl"
3457 vidstabdetect_filter_deps="libvidstab"
3458 vidstabtransform_filter_deps="libvidstab"
3459 libvmaf_filter_deps="libvmaf pthreads"
3460 zmq_filter_deps="libzmq"
3461 zoompan_filter_deps="swscale"
3462 zscale_filter_deps="libzimg const_nan"
3463 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3464 vpp_qsv_filter_deps="libmfx"
3465 vpp_qsv_filter_select="qsvvpp"
3466
3467 # examples
3468 avio_dir_cmd_deps="avformat avutil"
3469 avio_reading_deps="avformat avcodec avutil"
3470 decode_audio_example_deps="avcodec avutil"
3471 decode_video_example_deps="avcodec avutil"
3472 demuxing_decoding_example_deps="avcodec avformat avutil"
3473 encode_audio_example_deps="avcodec avutil"
3474 encode_video_example_deps="avcodec avutil"
3475 extract_mvs_example_deps="avcodec avformat avutil"
3476 filter_audio_example_deps="avfilter avutil"
3477 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3478 filtering_video_example_deps="avfilter avcodec avformat avutil"
3479 http_multiclient_example_deps="avformat avutil fork"
3480 hw_decode_example_deps="avcodec avformat avutil"
3481 metadata_example_deps="avformat avutil"
3482 muxing_example_deps="avcodec avformat avutil swscale"
3483 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3484 remuxing_example_deps="avcodec avformat avutil"
3485 resampling_audio_example_deps="avutil swresample"
3486 scaling_video_example_deps="avutil swscale"
3487 transcode_aac_example_deps="avcodec avformat swresample"
3488 transcoding_example_deps="avfilter avcodec avformat avutil"
3489 vaapi_encode_example_deps="avcodec avutil h264_vaapi_encoder"
3490 vaapi_transcode_example_deps="avcodec avformat avutil h264_vaapi_encoder"
3491
3492 # EXTRALIBS_LIST
3493 cpu_init_extralibs="pthreads_extralibs"
3494 cws2fws_extralibs="zlib_extralibs"
3495
3496 # libraries, in any order
3497 avcodec_deps="avutil"
3498 avcodec_suggest="libm"
3499 avcodec_select="null_bsf"
3500 avdevice_deps="avformat avcodec avutil"
3501 avdevice_suggest="libm"
3502 avfilter_deps="avutil"
3503 avfilter_suggest="libm"
3504 avformat_deps="avcodec avutil"
3505 avformat_suggest="libm network zlib"
3506 avresample_deps="avutil"
3507 avresample_suggest="libm"
3508 avutil_suggest="clock_gettime ffnvcodec libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia bcrypt"
3509 postproc_deps="avutil gpl"
3510 postproc_suggest="libm"
3511 swresample_deps="avutil"
3512 swresample_suggest="libm libsoxr"
3513 swscale_deps="avutil"
3514 swscale_suggest="libm"
3515
3516 avcodec_extralibs="pthreads_extralibs iconv_extralibs"
3517 avfilter_extralibs="pthreads_extralibs"
3518 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3519
3520 # programs
3521 ffmpeg_deps="avcodec avfilter avformat"
3522 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3523                null_filter
3524                trim_filter"
3525 ffmpeg_suggest="ole32 psapi shell32"
3526 ffplay_deps="avcodec avformat swscale swresample sdl2"
3527 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3528 ffplay_suggest="shell32"
3529 ffprobe_deps="avcodec avformat"
3530 ffprobe_suggest="shell32"
3531
3532 # documentation
3533 podpages_deps="perl"
3534 manpages_deps="perl pod2man"
3535 htmlpages_deps="perl"
3536 htmlpages_deps_any="makeinfo_html texi2html"
3537 txtpages_deps="perl makeinfo"
3538 doc_deps_any="manpages htmlpages podpages txtpages"
3539
3540 # default parameters
3541
3542 logfile="ffbuild/config.log"
3543
3544 # installation paths
3545 prefix_default="/usr/local"
3546 bindir_default='${prefix}/bin'
3547 datadir_default='${prefix}/share/ffmpeg'
3548 docdir_default='${prefix}/share/doc/ffmpeg'
3549 incdir_default='${prefix}/include'
3550 libdir_default='${prefix}/lib'
3551 mandir_default='${prefix}/share/man'
3552
3553 # toolchain
3554 ar_default="ar"
3555 cc_default="gcc"
3556 cxx_default="g++"
3557 host_cc_default="gcc"
3558 doxygen_default="doxygen"
3559 install="install"
3560 ln_s_default="ln -s -f"
3561 nm_default="nm -g"
3562 pkg_config_default=pkg-config
3563 ranlib_default="ranlib"
3564 strip_default="strip"
3565 version_script='--version-script'
3566 objformat="elf32"
3567 x86asmexe_default="nasm"
3568 windres_default="windres"
3569 nvcc_default="nvcc"
3570 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3571 striptype="direct"
3572
3573 # OS
3574 target_os_default=$(tolower $(uname -s))
3575 host_os=$target_os_default
3576
3577 # machine
3578 if test "$target_os_default" = aix; then
3579     arch_default=$(uname -p)
3580     strip_default="strip -X32_64"
3581 else
3582     arch_default=$(uname -m)
3583 fi
3584 cpu="generic"
3585 intrinsics="none"
3586
3587 # configurable options
3588 enable $PROGRAM_LIST
3589 enable $DOCUMENT_LIST
3590 enable $EXAMPLE_LIST
3591 enable $(filter_out avresample $LIBRARY_LIST)
3592 enable stripping
3593
3594 enable asm
3595 enable debug
3596 enable doc
3597 enable faan faandct faanidct
3598 enable optimizations
3599 enable runtime_cpudetect
3600 enable safe_bitstream_reader
3601 enable static
3602 enable swscale_alpha
3603 enable valgrind_backtrace
3604
3605 sws_max_filter_size_default=256
3606 set_default sws_max_filter_size
3607
3608 # internal components are enabled by default
3609 enable $EXTRALIBS_LIST
3610
3611 # Avoid external, non-system, libraries getting enabled by dependency resolution
3612 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3613
3614 # build settings
3615 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3616 LIBPREF="lib"
3617 LIBSUF=".a"
3618 FULLNAME='$(NAME)$(BUILDSUF)'
3619 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3620 SLIBPREF="lib"
3621 SLIBSUF=".so"
3622 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3623 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3624 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3625 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3626 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3627 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3628 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3629
3630 asflags_filter=echo
3631 cflags_filter=echo
3632 ldflags_filter=echo
3633
3634 AS_C='-c'
3635 AS_O='-o $@'
3636 CC_C='-c'
3637 CC_E='-E -o $@'
3638 CC_O='-o $@'
3639 CXX_C='-c'
3640 CXX_O='-o $@'
3641 OBJCC_C='-c'
3642 OBJCC_E='-E -o $@'
3643 OBJCC_O='-o $@'
3644 X86ASM_O='-o $@'
3645 LD_O='-o $@'
3646 LD_LIB='-l%'
3647 LD_PATH='-L'
3648 HOSTCC_C='-c'
3649 HOSTCC_E='-E -o $@'
3650 HOSTCC_O='-o $@'
3651 HOSTLD_O='-o $@'
3652 NVCC_C='-c'
3653 NVCC_O='-o $@'
3654
3655 host_extralibs='-lm'
3656 host_cflags_filter=echo
3657 host_ldflags_filter=echo
3658
3659 target_path='$(CURDIR)'
3660
3661 # since the object filename is not given with the -MM flag, the compiler
3662 # is only able to print the basename, and we must add the path ourselves
3663 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3664 DEPFLAGS='-MM'
3665
3666 mkdir -p ffbuild
3667
3668 # find source path
3669 if test -f configure; then
3670     source_path=.
3671 else
3672     source_path=$(cd $(dirname "$0"); pwd)
3673     case "$source_path" in
3674         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3675     esac
3676     test -e "$source_path/config.h" &&
3677         die "Out of tree builds are impossible with config.h in source dir."
3678 fi
3679
3680 for v in "$@"; do
3681     r=${v#*=}
3682     l=${v%"$r"}
3683     r=$(sh_quote "$r")
3684     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3685 done
3686
3687 find_things_extern(){
3688     thing=$1
3689     pattern=$2
3690     file=$source_path/$3
3691     out=${4:-$thing}
3692     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$out/p" "$file"
3693 }
3694
3695 find_filters_extern(){
3696     file=$source_path/$1
3697     #sed -n "s/^extern AVFilter ff_\([avfsinkrc]\{2,5\}\)_\(\w\+\);/\2_filter/p" $file
3698     sed -E -n "s/^extern AVFilter ff_([avfsinkrc]{2,5})_([a-zA-Z0-9_]+);/\2_filter/p" $file
3699 }
3700
3701 FILTER_LIST=$(find_filters_extern libavfilter/allfilters.c)
3702 OUTDEV_LIST=$(find_things_extern muxer AVOutputFormat libavdevice/alldevices.c outdev)
3703 INDEV_LIST=$(find_things_extern demuxer AVInputFormat libavdevice/alldevices.c indev)
3704 MUXER_LIST=$(find_things_extern muxer AVOutputFormat libavformat/allformats.c)
3705 DEMUXER_LIST=$(find_things_extern demuxer AVInputFormat libavformat/allformats.c)
3706 ENCODER_LIST=$(find_things_extern encoder AVCodec libavcodec/allcodecs.c)
3707 DECODER_LIST=$(find_things_extern decoder AVCodec libavcodec/allcodecs.c)
3708 CODEC_LIST="
3709     $ENCODER_LIST
3710     $DECODER_LIST
3711 "
3712 PARSER_LIST=$(find_things_extern parser AVCodecParser libavcodec/parsers.c)
3713 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3714 HWACCEL_LIST=$(find_things_extern hwaccel AVHWAccel libavcodec/hwaccels.h)
3715 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3716
3717 AVCODEC_COMPONENTS_LIST="
3718     $BSF_LIST
3719     $DECODER_LIST
3720     $ENCODER_LIST
3721     $HWACCEL_LIST
3722     $PARSER_LIST
3723 "
3724
3725 AVDEVICE_COMPONENTS_LIST="
3726     $INDEV_LIST
3727     $OUTDEV_LIST
3728 "
3729
3730 AVFILTER_COMPONENTS_LIST="
3731     $FILTER_LIST
3732 "
3733
3734 AVFORMAT_COMPONENTS_LIST="
3735     $DEMUXER_LIST
3736     $MUXER_LIST
3737     $PROTOCOL_LIST
3738 "
3739
3740 ALL_COMPONENTS="
3741     $AVCODEC_COMPONENTS_LIST
3742     $AVDEVICE_COMPONENTS_LIST
3743     $AVFILTER_COMPONENTS_LIST
3744     $AVFORMAT_COMPONENTS_LIST
3745 "
3746
3747 for n in $COMPONENT_LIST; do
3748     v=$(toupper ${n%s})_LIST
3749     eval enable \$$v
3750     eval ${n}_if_any="\$$v"
3751 done
3752
3753 enable $ARCH_EXT_LIST
3754
3755 die_unknown(){
3756     echo "Unknown option \"$1\"."
3757     echo "See $0 --help for available options."
3758     exit 1
3759 }
3760
3761 print_in_columns() {
3762     cols=$(expr $ncols / 24)
3763     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3764 }
3765
3766 show_list() {
3767     suffix=_$1
3768     shift
3769     echo $* | sed s/$suffix//g | print_in_columns
3770     exit 0
3771 }
3772
3773 rand_list(){
3774     IFS=', '
3775     set -- $*
3776     unset IFS
3777     for thing; do
3778         comp=${thing%:*}
3779         prob=${thing#$comp}
3780         prob=${prob#:}
3781         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3782         echo "prob ${prob:-0.5}"
3783         printf '%s\n' $comp
3784     done
3785 }
3786
3787 do_random(){
3788     action=$1
3789     shift
3790     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3791     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3792 }
3793
3794 for opt do
3795     optval="${opt#*=}"
3796     case "$opt" in
3797         --extra-ldflags=*)
3798             add_ldflags $optval
3799         ;;
3800         --extra-ldexeflags=*)
3801             add_ldexeflags $optval
3802         ;;
3803         --extra-ldsoflags=*)
3804             add_ldsoflags $optval
3805         ;;
3806         --extra-ldlibflags=*)
3807             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3808                  "removed in the future. Use --extra-ldsoflags instead."
3809             add_ldsoflags $optval
3810         ;;
3811         --extra-libs=*)
3812             add_extralibs $optval
3813         ;;
3814         --disable-devices)
3815             disable $INDEV_LIST $OUTDEV_LIST
3816         ;;
3817         --enable-debug=*)
3818             debuglevel="$optval"
3819         ;;
3820         --disable-programs)
3821             disable $PROGRAM_LIST
3822         ;;
3823         --disable-everything)
3824             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3825         ;;
3826         --disable-all)
3827             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3828             disable $LIBRARY_LIST $PROGRAM_LIST doc
3829             enable avutil
3830         ;;
3831         --enable-random|--disable-random)
3832             action=${opt%%-random}
3833             do_random ${action#--} $COMPONENT_LIST
3834         ;;
3835         --enable-random=*|--disable-random=*)
3836             action=${opt%%-random=*}
3837             do_random ${action#--} $optval
3838         ;;
3839         --enable-sdl)
3840             enable sdl2
3841         ;;
3842         --enable-*=*|--disable-*=*)
3843             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3844             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3845             eval list=\$$(toupper $thing)_LIST
3846             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3847             list=$(filter "$name" $list)
3848             [ "$list" = "" ] && warn "Option $opt did not match anything"
3849             $action $list
3850         ;;
3851         --enable-yasm|--disable-yasm)
3852             warn "The ${opt} option is only provided for compatibility and will be\n"\
3853                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3854             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3855         ;;
3856         --yasmexe=*)
3857             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3858                  "removed in the future. Use --x86asmexe instead."
3859             x86asmexe="$optval"
3860         ;;
3861         --enable-?*|--disable-?*)
3862             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3863             if is_in $option $COMPONENT_LIST; then
3864                 test $action = disable && action=unset
3865                 eval $action \$$(toupper ${option%s})_LIST
3866             elif is_in $option $CMDLINE_SELECT; then
3867                 $action $option
3868             else
3869                 die_unknown $opt
3870             fi
3871         ;;
3872         --list-*)
3873             NAME="${opt#--list-}"
3874             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3875             NAME=${NAME%s}
3876             eval show_list $NAME \$$(toupper $NAME)_LIST
3877         ;;
3878         --help|-h) show_help
3879         ;;
3880         --quiet|-q) quiet=yes
3881         ;;
3882         --fatal-warnings) enable fatal_warnings
3883         ;;
3884         --libfuzzer=*)
3885             libfuzzer_path="$optval"
3886         ;;
3887         *)
3888             optname="${opt%%=*}"
3889             optname="${optname#--}"
3890             optname=$(echo "$optname" | sed 's/-/_/g')
3891             if is_in $optname $CMDLINE_SET; then
3892                 eval $optname='$optval'
3893             elif is_in $optname $CMDLINE_APPEND; then
3894                 append $optname "$optval"
3895             else
3896                 die_unknown $opt
3897             fi
3898         ;;
3899     esac
3900 done
3901
3902 for e in $env; do
3903     eval "export $e"
3904 done
3905
3906 if disabled autodetect; then
3907
3908     # Unless iconv is explicitely disabled by the user, we still want to probe
3909     # for the iconv from the libc.
3910     disabled iconv || enable libc_iconv
3911
3912     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3913     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3914 fi
3915 # Mark specifically enabled, but normally autodetected libraries as requested.
3916 for lib in $AUTODETECT_LIBS; do
3917     enabled $lib && request $lib
3918 done
3919 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
3920 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3921 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3922
3923 disabled logging && logfile=/dev/null
3924
3925 # command line configuration sanity checks
3926
3927 # we need to build at least one lib type
3928 if ! enabled_any static shared; then
3929     cat <<EOF
3930 At least one library type must be built.
3931 Specify --enable-static to build the static libraries or --enable-shared to
3932 build the shared libraries as well. To only build the shared libraries specify
3933 --disable-static in addition to --enable-shared.
3934 EOF
3935     exit 1
3936 fi
3937
3938 die_license_disabled() {
3939     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3940 }
3941
3942 die_license_disabled_gpl() {
3943     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3944 }
3945
3946 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3947 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3948
3949 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3950 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3951
3952 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3953
3954 if enabled nonfree; then
3955     license="nonfree and unredistributable"
3956 elif enabled gplv3; then
3957     license="GPL version 3 or later"
3958 elif enabled lgplv3; then
3959     license="LGPL version 3 or later"
3960 elif enabled gpl; then
3961     license="GPL version 2 or later"
3962 else
3963     license="LGPL version 2.1 or later"
3964 fi
3965
3966 enabled_all gnutls openssl &&
3967     die "GnuTLS and OpenSSL must not be enabled at the same time."
3968
3969 enabled_all gnutls mbedtls &&
3970     die "GnuTLS and mbedTLS must not be enabled at the same time."
3971
3972 enabled_all openssl mbedtls &&
3973     die "OpenSSL and mbedTLS must not be enabled at the same time."
3974
3975 # Disable all the library-specific components if the library itself
3976 # is disabled, see AVCODEC_LIST and following _LIST variables.
3977
3978 disable_components(){
3979     disabled ${1} && disable $(
3980         eval components="\$$(toupper ${1})_COMPONENTS"
3981         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3982     )
3983 }
3984
3985 map 'disable_components $v' $LIBRARY_LIST
3986
3987 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3988 set >> $logfile
3989
3990 test -n "$valgrind" && toolchain="valgrind-memcheck"
3991
3992 enabled ossfuzz && ! echo $CFLAGS | grep -q -- "-fsanitize="  && ! echo $CFLAGS | grep -q -- "-fcoverage-mapping" &&{
3993     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
3994     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
3995 }
3996
3997 case "$toolchain" in
3998     *-asan)
3999         cc_default="${toolchain%-asan}"
4000         add_cflags  -fsanitize=address
4001         add_ldflags -fsanitize=address
4002     ;;
4003     *-msan)
4004         cc_default="${toolchain%-msan}"
4005         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
4006         add_ldflags -fsanitize=memory
4007     ;;
4008     *-tsan)
4009         cc_default="${toolchain%-tsan}"
4010         add_cflags  -fsanitize=thread
4011         add_ldflags -fsanitize=thread
4012         case "$toolchain" in
4013             gcc-tsan)
4014                 add_cflags  -fPIC
4015                 add_ldflags -fPIC
4016                 ;;
4017         esac
4018     ;;
4019     *-usan)
4020         cc_default="${toolchain%-usan}"
4021         add_cflags  -fsanitize=undefined
4022         add_ldflags -fsanitize=undefined
4023     ;;
4024     valgrind-*)
4025         target_exec_default="valgrind"
4026         case "$toolchain" in
4027             valgrind-massif)
4028                 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"
4029                 ;;
4030             valgrind-memcheck)
4031                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
4032                 ;;
4033         esac
4034     ;;
4035     msvc)
4036         # Check whether the current MSVC version needs the C99 converter.
4037         # From MSVC 2013 (compiler major version 18) onwards, it does actually
4038         # support enough of C99 to build ffmpeg. Default to the new
4039         # behaviour if the regexp was unable to match anything, since this
4040         # successfully parses the version number of existing supported
4041         # versions that require the converter (MSVC 2010 and 2012).
4042         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
4043         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
4044             cc_default="cl"
4045             cxx_default="cl"
4046         else
4047             die "Unsupported MSVC version (2013 or newer required)"
4048         fi
4049         ld_default="$source_path/compat/windows/mslink"
4050         nm_default="dumpbin -symbols"
4051         ar_default="lib"
4052         case "$arch" in
4053         aarch64|arm64)
4054             as_default="armasm64"
4055             ;;
4056         arm*)
4057             as_default="armasm"
4058             ;;
4059         esac
4060         target_os_default="win32"
4061         # Use a relative path for TMPDIR. This makes sure all the
4062         # ffconf temp files are written with a relative path, avoiding
4063         # issues with msys/win32 path conversion for MSVC parameters
4064         # such as -Fo<file> or -out:<file>.
4065         TMPDIR=.
4066     ;;
4067     icl)
4068         cc_default="icl"
4069         ld_default="xilink"
4070         nm_default="dumpbin -symbols"
4071         ar_default="xilib"
4072         target_os_default="win32"
4073         TMPDIR=.
4074     ;;
4075     gcov)
4076         add_cflags  -fprofile-arcs -ftest-coverage
4077         add_ldflags -fprofile-arcs -ftest-coverage
4078     ;;
4079     llvm-cov)
4080         add_cflags -fprofile-arcs -ftest-coverage
4081         add_ldflags --coverage
4082     ;;
4083     hardened)
4084         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
4085         add_cflags   -fno-strict-overflow -fstack-protector-all
4086         add_ldflags  -Wl,-z,relro -Wl,-z,now
4087         add_cflags   -fPIE
4088         add_ldexeflags -fPIE -pie
4089     ;;
4090     ?*)
4091         die "Unknown toolchain $toolchain"
4092     ;;
4093 esac
4094
4095 if test -n "$cross_prefix"; then
4096     test -n "$arch" && test -n "$target_os" ||
4097         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
4098     enable cross_compile
4099 fi
4100
4101 ar_default="${cross_prefix}${ar_default}"
4102 cc_default="${cross_prefix}${cc_default}"
4103 cxx_default="${cross_prefix}${cxx_default}"
4104 nm_default="${cross_prefix}${nm_default}"
4105 pkg_config_default="${cross_prefix}${pkg_config_default}"
4106 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
4107     ranlib_default="${cross_prefix}${ranlib_default} -D"
4108 else
4109     ranlib_default="${cross_prefix}${ranlib_default}"
4110 fi
4111 strip_default="${cross_prefix}${strip_default}"
4112 windres_default="${cross_prefix}${windres_default}"
4113
4114 sysinclude_default="${sysroot}/usr/include"
4115
4116 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
4117     target_exec target_os x86asmexe nvcc
4118 enabled cross_compile || host_cc_default=$cc
4119 set_default host_cc
4120
4121 pkg_config_fail_message=""
4122 if ! $pkg_config --version >/dev/null 2>&1; then
4123     warn "$pkg_config not found, library detection may fail."
4124     pkg_config=false
4125 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
4126     pkg_config_fail_message="
4127 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
4128 fi
4129
4130 if test $doxygen != $doxygen_default && \
4131   ! $doxygen --version >/dev/null 2>&1; then
4132     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
4133 fi
4134
4135 exesuf() {
4136     case $1 in
4137         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
4138     esac
4139 }
4140
4141 EXESUF=$(exesuf $target_os)
4142 HOSTEXESUF=$(exesuf $host_os)
4143
4144 # set temporary file name
4145 : ${TMPDIR:=$TEMPDIR}
4146 : ${TMPDIR:=$TMP}
4147 : ${TMPDIR:=/tmp}
4148
4149 if [ -n "$tempprefix" ] ; then
4150     mktemp(){
4151         tmpname="$tempprefix.${HOSTNAME}.${UID}"
4152         echo "$tmpname"
4153         mkdir "$tmpname"
4154     }
4155 elif ! test_cmd mktemp -u XXXXXX; then
4156     # simple replacement for missing mktemp
4157     # NOT SAFE FOR GENERAL USE
4158     mktemp(){
4159         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
4160         echo "$tmpname"
4161         mkdir "$tmpname"
4162     }
4163 fi
4164
4165 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
4166     die "Unable to create temporary directory in $TMPDIR."
4167
4168 tmpfile(){
4169     tmp="${FFTMPDIR}/test"$2
4170     (set -C; exec > $tmp) 2> /dev/null ||
4171         die "Unable to create temporary file in $FFTMPDIR."
4172     eval $1=$tmp
4173 }
4174
4175 trap 'rm -rf -- "$FFTMPDIR"' EXIT
4176 trap 'exit 2' INT
4177
4178 tmpfile TMPASM .asm
4179 tmpfile TMPC   .c
4180 tmpfile TMPCPP .cpp
4181 tmpfile TMPE   $EXESUF
4182 tmpfile TMPH   .h
4183 tmpfile TMPM   .m
4184 tmpfile TMPO   .o
4185 tmpfile TMPS   .S
4186 tmpfile TMPSH  .sh
4187 tmpfile TMPV   .ver
4188
4189 unset -f mktemp
4190
4191 chmod +x $TMPE
4192
4193 # make sure we can execute files in $TMPDIR
4194 cat > $TMPSH 2>> $logfile <<EOF
4195 #! /bin/sh
4196 EOF
4197 chmod +x $TMPSH >> $logfile 2>&1
4198 if ! $TMPSH >> $logfile 2>&1; then
4199     cat <<EOF
4200 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
4201 variable to another directory and make sure that it is not mounted noexec.
4202 EOF
4203     die "Sanity test failed."
4204 fi
4205
4206 armasm_flags(){
4207     for flag; do
4208         case $flag in
4209             # Filter out MSVC cl.exe options from cflags that shouldn't
4210             # be passed to gas-preprocessor
4211             -M[TD]*)                                            ;;
4212             *)                  echo $flag                      ;;
4213         esac
4214    done
4215 }
4216
4217 cparser_flags(){
4218     for flag; do
4219         case $flag in
4220             -Wno-switch)             echo -Wno-switch-enum ;;
4221             -Wno-format-zero-length) ;;
4222             -Wdisabled-optimization) ;;
4223             -Wno-pointer-sign)       echo -Wno-other ;;
4224             *)                       echo $flag ;;
4225         esac
4226     done
4227 }
4228
4229 msvc_common_flags(){
4230     for flag; do
4231         case $flag in
4232             # In addition to specifying certain flags under the compiler
4233             # specific filters, they must be specified here as well or else the
4234             # generic catch all at the bottom will print the original flag.
4235             -Wall)                ;;
4236             -Wextra)              ;;
4237             -std=c99)             ;;
4238             # Common flags
4239             -fomit-frame-pointer) ;;
4240             -g)                   echo -Z7 ;;
4241             -fno-math-errno)      ;;
4242             -fno-common)          ;;
4243             -fno-signed-zeros)    ;;
4244             -fPIC)                ;;
4245             -mthumb)              ;;
4246             -march=*)             ;;
4247             -lz)                  echo zlib.lib ;;
4248             -lx264)               echo libx264.lib ;;
4249             -lstdc++)             ;;
4250             -l*)                  echo ${flag#-l}.lib ;;
4251             -LARGEADDRESSAWARE)   echo $flag ;;
4252             -L*)                  echo -libpath:${flag#-L} ;;
4253             *)                    echo $flag ;;
4254         esac
4255     done
4256 }
4257
4258 msvc_flags(){
4259     msvc_common_flags "$@"
4260     for flag; do
4261         case $flag in
4262             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4263                                        -wd4554 ;;
4264             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4265                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4266                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4267                                        -wd4307 \
4268                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4269         esac
4270     done
4271 }
4272
4273 icl_flags(){
4274     msvc_common_flags "$@"
4275     for flag; do
4276         case $flag in
4277             # Despite what Intel's documentation says -Wall, which is supported
4278             # on Windows, does enable remarks so disable them here.
4279             -Wall)                echo $flag -Qdiag-disable:remark ;;
4280             -std=c99)             echo -Qstd=c99 ;;
4281             -flto)                echo -ipo ;;
4282         esac
4283     done
4284 }
4285
4286 icc_flags(){
4287     for flag; do
4288         case $flag in
4289             -flto)                echo -ipo ;;
4290             *)                    echo $flag ;;
4291         esac
4292     done
4293 }
4294
4295 suncc_flags(){
4296     for flag; do
4297         case $flag in
4298             -march=*|-mcpu=*)
4299                 case "${flag#*=}" in
4300                     native)                   echo -xtarget=native       ;;
4301                     v9|niagara)               echo -xarch=sparc          ;;
4302                     ultrasparc)               echo -xarch=sparcvis       ;;
4303                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4304                     i586|pentium)             echo -xchip=pentium        ;;
4305                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4306                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4307                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4308                     pentium4*)          echo -xtarget=pentium4           ;;
4309                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4310                     *-sse3)             echo -xarch=sse3                 ;;
4311                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4312                     bonnell)                   echo -xarch=ssse3         ;;
4313                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4314                     westmere)                  echo -xtarget=westmere    ;;
4315                     silvermont)                echo -xarch=sse4_2        ;;
4316                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4317                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4318                                                echo -xarch=avx           ;;
4319                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4320                     btver1)                    echo -xarch=amdsse4a      ;;
4321                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4322                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4323                     k8|opteron|athlon64|athlon-fx)
4324                                                echo -xarch=sse2a         ;;
4325                     athlon*)                   echo -xarch=pentium_proa  ;;
4326                 esac
4327                 ;;
4328             -std=c99)             echo -xc99              ;;
4329             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4330             -fPIC)                echo -KPIC -xcode=pic32 ;;
4331             -W*,*)                echo $flag              ;;
4332             -f*-*|-W*|-mimpure-text)                      ;;
4333             -shared)              echo -G                 ;;
4334             *)                    echo $flag              ;;
4335         esac
4336     done
4337 }
4338
4339 probe_cc(){
4340     pfx=$1
4341     _cc=$2
4342     first=$3
4343
4344     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4345     unset _ld_o _ldflags _ld_lib _ld_path
4346     unset _depflags _DEPCMD _DEPFLAGS
4347     _flags_filter=echo
4348
4349     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4350         true # no-op to avoid reading stdin in following checks
4351     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4352         _type=llvm_gcc
4353         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4354         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4355         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4356         _cflags_speed='-O3'
4357         _cflags_size='-Os'
4358     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4359         _type=gcc
4360         gcc_version=$($_cc --version | head -n1)
4361         gcc_basever=$($_cc -dumpversion)
4362         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4363         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4364         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4365         case $gcc_basever in
4366             2) ;;
4367             2.*) ;;
4368             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4369         esac
4370         if [ "$first" = true ]; then
4371             case $gcc_basever in
4372                 4.2*)
4373                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4374             esac
4375         fi
4376         _cflags_speed='-O3'
4377         _cflags_size='-Os'
4378     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4379         _type=icc
4380         _ident=$($_cc --version | head -n1)
4381         _depflags='-MMD'
4382         _cflags_speed='-O3'
4383         _cflags_size='-Os'
4384         _cflags_noopt='-O1'
4385         _flags_filter=icc_flags
4386     elif $_cc -v 2>&1 | grep -q xlc; then
4387         _type=xlc
4388         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4389         _cflags_speed='-O5'
4390         _cflags_size='-O5 -qcompact'
4391     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4392         test -d "$sysroot" || die "No valid sysroot specified."
4393         _type=armcc
4394         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4395         armcc_conf="$PWD/armcc.conf"
4396         $_cc --arm_linux_configure                 \
4397              --arm_linux_config_file="$armcc_conf" \
4398              --configure_sysroot="$sysroot"        \
4399              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4400              die "Error creating armcc configuration file."
4401         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4402         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4403         as_default="${cross_prefix}gcc"
4404         _depflags='-MMD'
4405         _cflags_speed='-O3'
4406         _cflags_size='-Os'
4407     elif $_cc -v 2>&1 | grep -q clang && ! $_cc -? > /dev/null 2>&1; then
4408         _type=clang
4409         _ident=$($_cc --version 2>/dev/null | head -n1)
4410         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4411         _cflags_speed='-O3'
4412         _cflags_size='-Oz'
4413     elif $_cc -V 2>&1 | grep -q Sun; then
4414         _type=suncc
4415         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4416         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4417         _DEPFLAGS='-xM1 -xc99'
4418         _ldflags='-std=c99'
4419         _cflags_speed='-O5'
4420         _cflags_size='-O5 -xspace'
4421         _flags_filter=suncc_flags
4422     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4423         _type=pathscale
4424         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4425         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4426         _cflags_speed='-O2'
4427         _cflags_size='-Os'
4428         _flags_filter='filter_out -Wdisabled-optimization'
4429     elif $_cc -v 2>&1 | grep -q Open64; then
4430         _type=open64
4431         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4432         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4433         _cflags_speed='-O2'
4434         _cflags_size='-Os'
4435         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4436     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4437         _type=armasm
4438         _ident=$($_cc | head -n1)
4439         # 4509: "This form of conditional instruction is deprecated"
4440         _flags="-nologo -ignore 4509"
4441         _flags_filter=armasm_flags
4442     elif $_cc 2>&1 | grep -q Intel; then
4443         _type=icl
4444         _ident=$($_cc 2>&1 | head -n1)
4445         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4446         # Not only is O3 broken on 13.x+ but it is slower on all previous
4447         # versions (tested) as well.
4448         _cflags_speed="-O2"
4449         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4450         if $_cc 2>&1 | grep -q Linker; then
4451             _ld_o='-out:$@'
4452         else
4453             _ld_o='-Fe$@'
4454         fi
4455         _cc_o='-Fo$@'
4456         _cc_e='-P'
4457         _flags_filter=icl_flags
4458         _ld_lib='lib%.a'
4459         _ld_path='-libpath:'
4460         # -Qdiag-error to make icl error when seeing certain unknown arguments
4461         _flags='-nologo -Qdiag-error:4044,10157'
4462         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4463         # with MSVC which enables it by default.
4464         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4465         disable stripping
4466     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4467         # lld can emulate multiple different linkers; in ms link.exe mode,
4468         # the -? parameter gives the help output which contains an identifyable
4469         # string, while it gives an error in other modes.
4470         _type=lld-link
4471         # The link.exe mode doesn't have a switch for getting the version,
4472         # but we can force it back to gnu mode and get the version from there.
4473         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4474         _ld_o='-out:$@'
4475         _flags_filter=msvc_flags
4476         _ld_lib='lib%.a'
4477         _ld_path='-libpath:'
4478     elif $_cc -nologo- 2>&1 | grep -q Microsoft || { $_cc -v 2>&1 | grep -q clang && $_cc -? > /dev/null 2>&1; }; then
4479         _type=msvc
4480         _ident=$($_cc 2>&1 | head -n1 | tr -d '\r')
4481         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4482         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4483         _cflags_speed="-O2"
4484         _cflags_size="-O1"
4485         _cflags_noopt="-O1"
4486         if $_cc -nologo- 2>&1 | grep -q Linker; then
4487             _ld_o='-out:$@'
4488         else
4489             _ld_o='-Fe$@'
4490         fi
4491         _cc_o='-Fo$@'
4492         _cc_e='-P -Fi$@'
4493         _flags_filter=msvc_flags
4494         _ld_lib='lib%.a'
4495         _ld_path='-libpath:'
4496         _flags='-nologo'
4497         disable stripping
4498     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4499         _type=cparser
4500         _ident=$($_cc --version | head -n1)
4501         _depflags='-MMD'
4502         _cflags_speed='-O4'
4503         _cflags_size='-O2'
4504         _flags_filter=cparser_flags
4505     fi
4506
4507     eval ${pfx}_type=\$_type
4508     eval ${pfx}_ident=\$_ident
4509 }
4510
4511 set_ccvars(){
4512     eval ${1}_C=\${_cc_c-\${${1}_C}}
4513     eval ${1}_E=\${_cc_e-\${${1}_E}}
4514     eval ${1}_O=\${_cc_o-\${${1}_O}}
4515
4516     if [ -n "$_depflags" ]; then
4517         eval ${1}_DEPFLAGS=\$_depflags
4518     else
4519         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4520         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4521         eval DEP${1}FLAGS=\$_flags
4522     fi
4523 }
4524
4525 probe_cc cc "$cc" "true"
4526 cflags_filter=$_flags_filter
4527 cflags_speed=$_cflags_speed
4528 cflags_size=$_cflags_size
4529 cflags_noopt=$_cflags_noopt
4530 add_cflags $_flags $_cflags
4531 cc_ldflags=$_ldflags
4532 set_ccvars CC
4533 set_ccvars CXX
4534
4535 probe_cc hostcc "$host_cc"
4536 host_cflags_filter=$_flags_filter
4537 host_cflags_speed=$_cflags_speed
4538 add_host_cflags  $_flags $_cflags
4539 set_ccvars HOSTCC
4540
4541 test -n "$cc_type" && enable $cc_type ||
4542     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4543
4544 : ${as_default:=$cc}
4545 : ${objcc_default:=$cc}
4546 : ${dep_cc_default:=$cc}
4547 : ${ld_default:=$cc}
4548 : ${host_ld_default:=$host_cc}
4549 set_default ar as objcc dep_cc ld ln_s host_ld windres
4550
4551 probe_cc as "$as"
4552 asflags_filter=$_flags_filter
4553 add_asflags $_flags $_cflags
4554 set_ccvars AS
4555
4556 probe_cc objcc "$objcc"
4557 objcflags_filter=$_flags_filter
4558 add_objcflags $_flags $_cflags
4559 set_ccvars OBJC
4560
4561 probe_cc ld "$ld"
4562 ldflags_filter=$_flags_filter
4563 add_ldflags $_flags $_ldflags
4564 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4565 LD_O=${_ld_o-$LD_O}
4566 LD_LIB=${_ld_lib-$LD_LIB}
4567 LD_PATH=${_ld_path-$LD_PATH}
4568
4569 probe_cc hostld "$host_ld"
4570 host_ldflags_filter=$_flags_filter
4571 add_host_ldflags $_flags $_ldflags
4572 HOSTLD_O=${_ld_o-$HOSTLD_O}
4573
4574 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4575     probe_cc depcc "$dep_cc"
4576     CCDEP=${_DEPCMD:-$DEPCMD}
4577     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4578     DEPCCFLAGS=$_flags
4579 fi
4580
4581 if $ar 2>&1 | grep -q Microsoft; then
4582     arflags="-nologo"
4583     ar_o='-out:$@'
4584 elif $ar 2>&1 | grep -q "\[D\] "; then
4585     arflags="rcD"
4586     ar_o='$@'
4587 else
4588     arflags="rc"
4589     ar_o='$@'
4590 fi
4591
4592 add_cflags $extra_cflags
4593 add_cxxflags $extra_cxxflags
4594 add_objcflags $extra_objcflags
4595 add_asflags $extra_cflags
4596
4597 if test -n "$sysroot"; then
4598     case "$cc_type" in
4599         gcc|llvm_gcc|clang)
4600             add_cppflags --sysroot="$sysroot"
4601             add_ldflags --sysroot="$sysroot"
4602         ;;
4603     esac
4604 fi
4605
4606 if test "$cpu" = host; then
4607     enabled cross_compile &&
4608         die "--cpu=host makes no sense when cross-compiling."
4609
4610     case "$cc_type" in
4611         gcc|llvm_gcc)
4612             check_native(){
4613                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4614                 sed -n "/cc1.*$1=/{
4615                             s/.*$1=\\([^ ]*\\).*/\\1/
4616                             p
4617                             q
4618                         }" $TMPE
4619             }
4620             cpu=$(check_native -march || check_native -mcpu)
4621         ;;
4622         clang)
4623             check_native(){
4624                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4625                 sed -n "/cc1.*-target-cpu /{
4626                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4627                             p
4628                             q
4629                         }" $TMPE
4630             }
4631             cpu=$(check_native -march)
4632         ;;
4633     esac
4634
4635     test "${cpu:-host}" = host &&
4636         die "--cpu=host not supported with compiler $cc"
4637 fi
4638
4639 # Deal with common $arch aliases
4640 case "$arch" in
4641     aarch64|arm64)
4642         arch="aarch64"
4643     ;;
4644     arm*|iPad*|iPhone*)
4645         arch="arm"
4646     ;;
4647     mips*|IP*)
4648         case "$arch" in
4649         *el)
4650             add_cppflags -EL
4651             add_ldflags -EL
4652         ;;
4653         *eb)
4654             add_cppflags -EB
4655             add_ldflags -EB
4656         ;;
4657         esac
4658         arch="mips"
4659     ;;
4660     parisc*|hppa*)
4661         arch="parisc"
4662     ;;
4663     "Power Macintosh"|ppc*|powerpc*)
4664         arch="ppc"
4665     ;;
4666     s390|s390x)
4667         arch="s390"
4668     ;;
4669     sh4|sh)
4670         arch="sh4"
4671     ;;
4672     sun4*|sparc*)
4673         arch="sparc"
4674     ;;
4675     tilegx|tile-gx)
4676         arch="tilegx"
4677     ;;
4678     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4679         arch="x86"
4680     ;;
4681 esac
4682
4683 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4684 enable $arch
4685
4686 # Add processor-specific flags
4687 if enabled aarch64; then
4688
4689     case $cpu in
4690         armv*)
4691             cpuflags="-march=$cpu"
4692         ;;
4693         *)
4694             cpuflags="-mcpu=$cpu"
4695         ;;
4696     esac
4697
4698 elif enabled alpha; then
4699
4700     cpuflags="-mcpu=$cpu"
4701
4702 elif enabled arm; then
4703
4704     check_arm_arch() {
4705         test_cpp_condition stddef.h \
4706             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4707             $cpuflags
4708     }
4709
4710     probe_arm_arch() {
4711         if   check_arm_arch 4;        then echo armv4
4712         elif check_arm_arch 4T;       then echo armv4t
4713         elif check_arm_arch 5;        then echo armv5
4714         elif check_arm_arch 5E;       then echo armv5e
4715         elif check_arm_arch 5T;       then echo armv5t
4716         elif check_arm_arch 5TE;      then echo armv5te
4717         elif check_arm_arch 5TEJ;     then echo armv5te
4718         elif check_arm_arch 6;        then echo armv6
4719         elif check_arm_arch 6J;       then echo armv6j
4720         elif check_arm_arch 6K;       then echo armv6k
4721         elif check_arm_arch 6Z;       then echo armv6z
4722         elif check_arm_arch 6KZ;      then echo armv6zk
4723         elif check_arm_arch 6ZK;      then echo armv6zk
4724         elif check_arm_arch 6T2;      then echo armv6t2
4725         elif check_arm_arch 7;        then echo armv7
4726         elif check_arm_arch 7A  7_A;  then echo armv7-a
4727         elif check_arm_arch 7S;       then echo armv7-a
4728         elif check_arm_arch 7R  7_R;  then echo armv7-r
4729         elif check_arm_arch 7M  7_M;  then echo armv7-m
4730         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4731         elif check_arm_arch 8A  8_A;  then echo armv8-a
4732         fi
4733     }
4734
4735     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4736
4737     case $cpu in
4738         armv*)
4739             cpuflags="-march=$cpu"
4740             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4741         ;;
4742         *)
4743             cpuflags="-mcpu=$cpu"
4744             case $cpu in
4745                 cortex-a*)                               subarch=armv7a  ;;
4746                 cortex-r*)                               subarch=armv7r  ;;
4747                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4748                 arm11*)                                  subarch=armv6   ;;
4749                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4750                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4751                 *)                             subarch=$(probe_arm_arch) ;;
4752             esac
4753         ;;
4754     esac
4755
4756     case "$subarch" in
4757         armv5t*)    enable fast_clz                ;;
4758         armv[6-8]*)
4759             enable fast_clz
4760             disabled fast_unaligned || enable fast_unaligned
4761             ;;
4762     esac
4763
4764 elif enabled avr32; then
4765
4766     case $cpu in
4767         ap7[02]0[0-2])
4768             subarch="avr32_ap"
4769             cpuflags="-mpart=$cpu"
4770         ;;
4771         ap)
4772             subarch="avr32_ap"
4773             cpuflags="-march=$cpu"
4774         ;;
4775         uc3[ab]*)
4776             subarch="avr32_uc"
4777             cpuflags="-mcpu=$cpu"
4778         ;;
4779         uc)
4780             subarch="avr32_uc"
4781             cpuflags="-march=$cpu"
4782         ;;
4783     esac
4784
4785 elif enabled bfin; then
4786
4787     cpuflags="-mcpu=$cpu"
4788
4789 elif enabled mips; then
4790
4791     cpuflags="-march=$cpu"
4792
4793     if [ "$cpu" != "generic" ]; then
4794         disable mips32r2
4795         disable mips32r5
4796         disable mips64r2
4797         disable mips32r6
4798         disable mips64r6
4799         disable loongson2
4800         disable loongson3
4801
4802         case $cpu in
4803             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4804                 enable mips32r2
4805                 disable msa
4806             ;;
4807             p5600|i6400|p6600)
4808                 disable mipsdsp
4809                 disable mipsdspr2
4810             ;;
4811             loongson*)
4812                 enable loongson2
4813                 enable loongson3
4814                 enable local_aligned
4815                 enable simd_align_16
4816                 enable fast_64bit
4817                 enable fast_clz
4818                 enable fast_cmov
4819                 enable fast_unaligned
4820                 disable aligned_stack
4821                 disable mipsfpu
4822                 disable mipsdsp
4823                 disable mipsdspr2
4824                 # When gcc version less than 5.3.0, add -fno-expensive-optimizations flag.
4825                 if [ $cc == gcc ]; then
4826                     gcc_version=$(gcc -dumpversion)
4827                     if [ "$(echo "$gcc_version 5.3.0" | tr " " "\n" | sort -rV | head -n 1)" == "$gcc_version" ]; then
4828                         expensive_optimization_flag=""
4829                     else
4830                         expensive_optimization_flag="-fno-expensive-optimizations"
4831                     fi
4832                 fi
4833                 case $cpu in
4834                     loongson3*)
4835                         cpuflags="-march=loongson3a -mhard-float $expensive_optimization_flag"
4836                     ;;
4837                     loongson2e)
4838                         cpuflags="-march=loongson2e -mhard-float $expensive_optimization_flag"
4839                     ;;
4840                     loongson2f)
4841                         cpuflags="-march=loongson2f -mhard-float $expensive_optimization_flag"
4842                     ;;
4843                 esac
4844             ;;
4845             *)
4846                 # Unknown CPU. Disable everything.
4847                 warn "unknown CPU. Disabling all MIPS optimizations."
4848                 disable mipsfpu
4849                 disable mipsdsp
4850                 disable mipsdspr2
4851                 disable msa
4852                 disable mmi
4853             ;;
4854         esac
4855
4856         case $cpu in
4857             24kc)
4858                 disable mipsfpu
4859                 disable mipsdsp
4860                 disable mipsdspr2
4861             ;;
4862             24kf*)
4863                 disable mipsdsp
4864                 disable mipsdspr2
4865             ;;
4866             24kec|34kc|1004kc)
4867                 disable mipsfpu
4868                 disable mipsdspr2
4869             ;;
4870             24kef*|34kf*|1004kf*)
4871                 disable mipsdspr2
4872             ;;
4873             74kc)
4874                 disable mipsfpu
4875             ;;
4876             p5600)
4877                 enable mips32r5
4878                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4879             ;;
4880             i6400)
4881                 enable mips64r6
4882                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4883             ;;
4884             p6600)
4885                 enable mips64r6
4886                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4887             ;;
4888         esac
4889     else
4890         # We do not disable anything. Is up to the user to disable the unwanted features.
4891         warn 'generic cpu selected'
4892     fi
4893
4894 elif enabled ppc; then
4895
4896     disable ldbrx
4897
4898     case $(tolower $cpu) in
4899         601|ppc601|powerpc601)
4900             cpuflags="-mcpu=601"
4901             disable altivec
4902         ;;
4903         603*|ppc603*|powerpc603*)
4904             cpuflags="-mcpu=603"
4905             disable altivec
4906         ;;
4907         604*|ppc604*|powerpc604*)
4908             cpuflags="-mcpu=604"
4909             disable altivec
4910         ;;
4911         g3|75*|ppc75*|powerpc75*)
4912             cpuflags="-mcpu=750"
4913             disable altivec
4914         ;;
4915         g4|745*|ppc745*|powerpc745*)
4916             cpuflags="-mcpu=7450"
4917             disable vsx
4918         ;;
4919         74*|ppc74*|powerpc74*)
4920             cpuflags="-mcpu=7400"
4921             disable vsx
4922         ;;
4923         g5|970|ppc970|powerpc970)
4924             cpuflags="-mcpu=970"
4925             disable vsx
4926         ;;
4927         power[3-6]*)
4928             cpuflags="-mcpu=$cpu"
4929             disable vsx
4930         ;;
4931         power[7-8]*)
4932             cpuflags="-mcpu=$cpu"
4933         ;;
4934         cell)
4935             cpuflags="-mcpu=cell"
4936             enable ldbrx
4937             disable vsx
4938         ;;
4939         e500mc)
4940             cpuflags="-mcpu=e500mc"
4941             disable altivec
4942         ;;
4943         e500v2)
4944             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4945             disable altivec
4946             disable dcbzl
4947         ;;
4948         e500)
4949             cpuflags="-mcpu=8540 -mhard-float"
4950             disable altivec
4951             disable dcbzl
4952         ;;
4953     esac
4954
4955 elif enabled sparc; then
4956
4957     case $cpu in
4958         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4959             cpuflags="-mcpu=$cpu"
4960         ;;
4961         ultrasparc*|niagara[234])
4962             cpuflags="-mcpu=$cpu"
4963         ;;
4964     esac
4965
4966 elif enabled x86; then
4967
4968     case $cpu in
4969         i[345]86|pentium)
4970             cpuflags="-march=$cpu"
4971             disable i686
4972             disable mmx
4973         ;;
4974         # targets that do NOT support nopl and conditional mov (cmov)
4975         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4976             cpuflags="-march=$cpu"
4977             disable i686
4978         ;;
4979         # targets that do support nopl and conditional mov (cmov)
4980         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4981         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4982         |amdfam10|barcelona|b[dt]ver*|znver*)
4983             cpuflags="-march=$cpu"
4984             enable i686
4985             enable fast_cmov
4986         ;;
4987         # targets that do support conditional mov but on which it's slow
4988         pentium4|pentium4m|prescott|nocona)
4989             cpuflags="-march=$cpu"
4990             enable i686
4991             disable fast_cmov
4992         ;;
4993     esac
4994
4995 fi
4996
4997 if [ "$cpu" != generic ]; then
4998     add_cflags  $cpuflags
4999     add_asflags $cpuflags
5000     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
5001 fi
5002
5003 # compiler sanity check
5004 test_exec <<EOF
5005 int main(void){ return 0; }
5006 EOF
5007 if test "$?" != 0; then
5008     echo "$cc is unable to create an executable file."
5009     if test -z "$cross_prefix" && ! enabled cross_compile ; then
5010         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
5011         echo "Only do this if you know what cross compiling means."
5012     fi
5013     die "C compiler test failed."
5014 fi
5015
5016 add_cppflags -D_ISOC99_SOURCE
5017 add_cxxflags -D__STDC_CONSTANT_MACROS
5018 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
5019
5020 # some compilers silently accept -std=c11, so we also need to check that the
5021 # version macro is defined properly
5022 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
5023     add_cflags -std=c11 ||
5024     check_cflags -std=c99
5025
5026 check_cppflags -D_FILE_OFFSET_BITS=64
5027 check_cppflags -D_LARGEFILE_SOURCE
5028
5029 add_host_cppflags -D_ISOC99_SOURCE
5030 check_host_cflags -std=c99
5031 check_host_cflags -Wall
5032 check_host_cflags $host_cflags_speed
5033
5034 check_64bit(){
5035     arch32=$1
5036     arch64=$2
5037     expr=${3:-'sizeof(void *) > 4'}
5038     test_code cc "" "int test[2*($expr) - 1]" &&
5039         subarch=$arch64 || subarch=$arch32
5040     enable $subarch
5041 }
5042
5043 case "$arch" in
5044     aarch64|alpha|ia64)
5045         enabled shared && enable_weak pic
5046     ;;
5047     mips)
5048         check_64bit mips mips64 '_MIPS_SIM > 1'
5049         enabled shared && enable_weak pic
5050     ;;
5051     parisc)
5052         check_64bit parisc parisc64
5053         enabled shared && enable_weak pic
5054     ;;
5055     ppc)
5056         check_64bit ppc ppc64
5057         enabled shared && enable_weak pic
5058     ;;
5059     s390)
5060         check_64bit s390 s390x
5061         enabled shared && enable_weak pic
5062     ;;
5063     sparc)
5064         check_64bit sparc sparc64
5065         enabled shared && enable_weak pic
5066     ;;
5067     x86)
5068         check_64bit x86_32 x86_64
5069         # Treat x32 as x64 for now. Note it also needs pic if shared
5070         test "$subarch" = "x86_32" && test_cpp_condition stddef.h 'defined(__x86_64__)' &&
5071             subarch=x86_64 && enable x86_64 && disable x86_32
5072         if enabled x86_64; then
5073             enabled shared && enable_weak pic
5074             objformat=elf64
5075         fi
5076     ;;
5077 esac
5078
5079 # OS specific
5080 case $target_os in
5081     aix)
5082         SHFLAGS=-shared
5083         add_cppflags '-I\$(SRC_PATH)/compat/aix'
5084         enabled shared && add_ldflags -Wl,-brtl
5085         arflags='-Xany -r -c'
5086         striptype=""
5087         ;;
5088     android)
5089         disable symver
5090         enable section_data_rel_ro
5091         add_cflags -fPIE
5092         add_ldexeflags -fPIE -pie
5093         SLIB_INSTALL_NAME='$(SLIBNAME)'
5094         SLIB_INSTALL_LINKS=
5095         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
5096         ;;
5097     haiku)
5098         prefix_default="/boot/common"
5099         network_extralibs="-lnetwork"
5100         host_extralibs=
5101         ;;
5102     sunos)
5103         SHFLAGS='-shared -Wl,-h,$$(@F)'
5104         enabled x86 && append SHFLAGS -mimpure-text
5105         network_extralibs="-lsocket -lnsl"
5106         add_cppflags -D__EXTENSIONS__
5107         # When using suncc to build, the Solaris linker will mark
5108         # an executable with each instruction set encountered by
5109         # the Solaris assembler.  As our libraries contain their own
5110         # guards for processor-specific code, instead suppress
5111         # generation of the HWCAPS ELF section on Solaris x86 only.
5112         enabled_all suncc x86 &&
5113             echo "hwcap_1 = OVERRIDE;" > mapfile &&
5114             add_ldflags -Wl,-M,mapfile
5115         nm_default='nm -P -g'
5116         version_script='-M'
5117         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
5118         ;;
5119     netbsd)
5120         disable symver
5121         oss_indev_extralibs="-lossaudio"
5122         oss_outdev_extralibs="-lossaudio"
5123         enabled gcc || check_ldflags -Wl,-zmuldefs
5124         ;;
5125     openbsd|bitrig)
5126         disable symver
5127         striptype=""
5128         SHFLAGS='-shared'
5129         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
5130         SLIB_INSTALL_LINKS=
5131         oss_indev_extralibs="-lossaudio"
5132         oss_outdev_extralibs="-lossaudio"
5133         ;;
5134     dragonfly)
5135         disable symver
5136         ;;
5137     freebsd)
5138         ;;
5139     bsd/os)
5140         add_extralibs -lpoll -lgnugetopt
5141         strip="strip -d"
5142         ;;
5143     darwin)
5144         enabled ppc && add_asflags -force_cpusubtype_ALL
5145         install_name_dir_default='$(SHLIBDIR)'
5146         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
5147         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
5148         strip="${strip} -x"
5149         add_ldflags -Wl,-dynamic,-search_paths_first
5150         check_cflags -Werror=partial-availability
5151         SLIBSUF=".dylib"
5152         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
5153         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
5154         enabled x86_64 && objformat="macho64" || objformat="macho32"
5155         enabled_any pic shared x86_64 ||
5156             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
5157         check_headers dispatch/dispatch.h &&
5158             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
5159         if test -n "$sysroot"; then
5160             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
5161             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
5162         fi
5163         version_script='-exported_symbols_list'
5164         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
5165         ;;
5166     msys*)
5167         die "Native MSYS builds are discouraged, please use the MINGW environment."
5168         ;;
5169     mingw32*|mingw64*)
5170         target_os=mingw32
5171         LIBTARGET=i386
5172         if enabled x86_64; then
5173             LIBTARGET="i386:x86-64"
5174         elif enabled arm; then
5175             LIBTARGET="arm"
5176         elif enabled aarch64; then
5177             LIBTARGET="arm64"
5178         fi
5179         if enabled shared; then
5180             # Cannot build both shared and static libs when using dllimport.
5181             disable static
5182         fi
5183         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5184         enabled x86_32 && check_ldflags -Wl,--large-address-aware
5185         shlibdir_default="$bindir_default"
5186         SLIBPREF=""
5187         SLIBSUF=".dll"
5188         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5189         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5190         if test_cmd lib.exe -list; then
5191             SLIB_EXTRA_CMD=-'lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5192             if enabled x86_64; then
5193                 LIBTARGET=x64
5194             fi
5195         else
5196             SLIB_EXTRA_CMD=-'$(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
5197         fi
5198         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5199         SLIB_INSTALL_LINKS=
5200         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5201         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5202         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5203         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--disable-auto-image-base $$(@:$(SLIBSUF)=.def)'
5204         enabled x86_64 && objformat="win64" || objformat="win32"
5205         dlltool="${cross_prefix}dlltool"
5206         ranlib=:
5207         enable dos_paths
5208         check_ldflags -Wl,--nxcompat,--dynamicbase
5209         # Lets work around some stupidity in binutils.
5210         # ld will strip relocations from executables even though we need them
5211         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
5212         # however ld then forgets what the entry point should be (oops) so we
5213         # have to manually (re)set it.
5214         if enabled x86_32; then
5215             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
5216         elif enabled x86_64; then
5217             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
5218             check_ldflags -Wl,--high-entropy-va # binutils 2.25
5219             # Set image base >4GB for extra entropy with HEASLR
5220             add_ldexeflags -Wl,--image-base,0x140000000
5221             append SHFLAGS -Wl,--image-base,0x180000000
5222         fi
5223         ;;
5224     win32|win64)
5225         disable symver
5226         if enabled shared; then
5227             # Link to the import library instead of the normal static library
5228             # for shared libs.
5229             LD_LIB='%.lib'
5230             # Cannot build both shared and static libs with MSVC or icl.
5231             disable static
5232         fi
5233         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
5234         shlibdir_default="$bindir_default"
5235         SLIBPREF=""
5236         SLIBSUF=".dll"
5237         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5238         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5239         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5240         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5241         SLIB_INSTALL_LINKS=
5242         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5243         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5244         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5245         enabled x86_64 && objformat="win64" || objformat="win32"
5246         ranlib=:
5247         enable dos_paths
5248         ;;
5249     cygwin*)
5250         target_os=cygwin
5251         shlibdir_default="$bindir_default"
5252         SLIBPREF="cyg"
5253         SLIBSUF=".dll"
5254         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5255         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5256         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5257         SLIB_INSTALL_LINKS=
5258         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5259         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5260         enabled x86_64 && objformat="win64" || objformat="win32"
5261         enable dos_paths
5262         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5263         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5264         ;;
5265     *-dos|freedos|opendos)
5266         network_extralibs="-lsocket"
5267         objformat="coff"
5268         enable dos_paths
5269         add_cppflags -U__STRICT_ANSI__
5270         ;;
5271     linux)
5272         enable section_data_rel_ro
5273         enabled_any arm aarch64 && enable_weak linux_perf
5274         ;;
5275     irix*)
5276         target_os=irix
5277         ranlib="echo ignoring ranlib"
5278         ;;
5279     os/2*)
5280         strip="lxlite -CS"
5281         striptype=""
5282         objformat="aout"
5283         add_cppflags -D_GNU_SOURCE
5284         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5285         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5286         LIBSUF="_s.a"
5287         SLIBPREF=""
5288         SLIBSUF=".dll"
5289         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5290         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5291         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5292             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5293             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5294             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5295             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5296         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5297             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5298         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5299         SLIB_INSTALL_LINKS=
5300         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5301         enable dos_paths
5302         enable_weak os2threads
5303         ;;
5304     gnu/kfreebsd)
5305         add_cppflags -D_BSD_SOURCE
5306         ;;
5307     gnu)
5308         ;;
5309     qnx)
5310         add_cppflags -D_QNX_SOURCE
5311         network_extralibs="-lsocket"
5312         ;;
5313     symbian)
5314         SLIBSUF=".dll"
5315         enable dos_paths
5316         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5317         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5318         add_ldflags -Wl,--target1-abs,--no-undefined \
5319                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5320                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5321         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5322                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5323                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5324         ;;
5325     minix)
5326         ;;
5327     none)
5328         ;;
5329     *)
5330         die "Unknown OS '$target_os'."
5331         ;;
5332 esac
5333
5334 # test if creating links works
5335 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5336 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5337 mkdir "$link_dest"
5338 $ln_s "$link_dest" "$link_name"
5339 touch "$link_dest/test_file"
5340 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5341     # create link to source path
5342     [ -e src ] && rm src
5343     $ln_s "$source_path" src
5344     source_link=src
5345 else
5346     # creating directory links doesn't work
5347     # fall back to using the full source path
5348     source_link="$source_path"
5349 fi
5350 # cleanup
5351 rm -r "$link_dest"
5352 rm -r "$link_name"
5353
5354 # determine libc flavour
5355
5356 probe_libc(){
5357     pfx=$1
5358     pfx_no_=${pfx%_}
5359     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5360     if test_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5361         eval ${pfx}libc_type=uclibc
5362         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5363     elif test_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5364         eval ${pfx}libc_type=glibc
5365         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5366     # MinGW headers can be installed on Cygwin, so check for newlib first.
5367     elif test_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5368         eval ${pfx}libc_type=newlib
5369         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5370     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5371     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5372         eval ${pfx}libc_type=mingw64
5373         if test_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5374             add_compat msvcrt/snprintf.o
5375             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5376         fi
5377         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5378         eval test \$${pfx_no_}cc_type = "gcc" &&
5379             add_${pfx}cppflags -D__printf__=__gnu_printf__
5380         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5381             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5382     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5383          test_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5384         eval ${pfx}libc_type=mingw32
5385         test_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5386             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5387             die "ERROR: MinGW32 runtime version must be >= 3.15."
5388         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5389         test_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5390             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5391         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5392             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5393         eval test \$${pfx_no_}cc_type = "gcc" &&
5394             add_${pfx}cppflags -D__printf__=__gnu_printf__
5395     elif test_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5396         eval ${pfx}libc_type=msvcrt
5397         if test_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5398             if [ "$pfx" = host_ ]; then
5399                 add_host_cppflags -Dsnprintf=_snprintf
5400             else
5401                 add_compat strtod.o strtod=avpriv_strtod
5402                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5403                                              _snprintf=avpriv_snprintf  \
5404                                              vsnprintf=avpriv_vsnprintf
5405             fi
5406         fi
5407         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5408         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5409         # 0x601 by default unless something else is set by the user.
5410         # This can easily lead to us detecting functions only present
5411         # in such new versions and producing binaries requiring windows 7.0.
5412         # Therefore explicitly set the default to Vista unless the user has
5413         # set something else on the command line.
5414         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5415         # family. For these cases, configure is free to use any functions
5416         # found in the SDK headers by default. (Alternatively, we could force
5417         # _WIN32_WINNT to 0x0602 in that case.)
5418         test_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5419             { test_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0600; }
5420 #ifdef WINAPI_FAMILY
5421 #include <winapifamily.h>
5422 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5423 #error not desktop
5424 #endif
5425 #endif
5426 EOF
5427         if [ "$pfx" = "" ]; then
5428             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5429             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5430         fi
5431     elif test_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5432         eval ${pfx}libc_type=klibc
5433     elif test_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5434         eval ${pfx}libc_type=bionic
5435     elif test_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5436         eval ${pfx}libc_type=solaris
5437         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5438     fi
5439     test_${pfx}cc <<EOF
5440 #include <time.h>
5441 void *v = localtime_r;
5442 EOF
5443 test "$?" != 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
5444 #include <time.h>
5445 void *v = localtime_r;
5446 EOF
5447
5448     eval test -n "\${${pfx}libc_type}" && enable ${pfx}libc_${libc_type}
5449 }
5450
5451 probe_libc
5452 probe_libc host_
5453
5454 # hacks for compiler/libc/os combinations
5455
5456 case $libc_type in
5457     bionic)
5458         add_compat strtod.o strtod=avpriv_strtod
5459         ;;
5460 esac
5461
5462 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5463     add_cppflags '-I\$(SRC_PATH)/compat/float'
5464
5465 test_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5466
5467 set_default libdir
5468 : ${shlibdir_default:="$libdir"}
5469 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5470
5471 set_default $PATHS_LIST
5472 set_default nm
5473
5474 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5475
5476 enable_weak_pic() {
5477     disabled pic && return
5478     enable pic
5479     add_cppflags -DPIC
5480     case "$target_os" in
5481     mingw*|cygwin*|win*)
5482         ;;
5483     *)
5484         add_cflags -fPIC
5485         add_asflags -fPIC
5486         ;;
5487     esac
5488 }
5489
5490 enabled pic && enable_weak_pic
5491
5492 test_cc <<EOF || die "Symbol mangling check failed."
5493 int ff_extern;
5494 EOF
5495 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5496 extern_prefix=${sym%%ff_extern*}
5497
5498 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
5499
5500 for restrict_keyword in restrict __restrict__ __restrict ""; do
5501     test_code cc "" "char * $restrict_keyword p" && break
5502 done
5503
5504 check_cc pragma_deprecated "" '_Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"")'
5505
5506 # The global variable ensures the bits appear unchanged in the object file.
5507 test_cc <<EOF || die "endian test failed"
5508 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5509 EOF
5510 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5511
5512 check_cc const_nan math.h "struct { double d; } static const bar[] = { { NAN } }"
5513
5514 if ! enabled ppc64 || enabled bigendian; then
5515     disable vsx
5516 fi
5517
5518 check_gas() {
5519     log "check_gas using '$as' as AS"
5520     # :vararg is used on aarch64, arm and ppc altivec
5521     check_as vararg "
5522 .macro m n, y:vararg=0
5523 \n: .int \y
5524 .endm
5525 m x" || return 1
5526     # .altmacro is only used in arm asm
5527     ! enabled arm || check_as gnu_as ".altmacro"
5528 }
5529
5530 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5531     nogas=:
5532     enabled_any arm aarch64 && nogas=die
5533     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5534     as_noop=-v
5535
5536     case $as_type in
5537         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5538         gcc)  gaspp_as_type=gas ;;
5539         *)    gaspp_as_type=$as_type ;;
5540     esac
5541
5542     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5543
5544     test "${as#*gas-preprocessor.pl}" != "$as" ||
5545     test_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5546         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5547
5548     if ! check_gas ; then
5549         as=${gas:=$as}
5550         check_gas || \
5551             $nogas "GNU assembler not found, install/update gas-preprocessor"
5552     fi
5553
5554     check_as as_func ".func test
5555                       .endfunc"
5556 fi
5557
5558 check_inline_asm inline_asm_labels '"1:\n"'
5559
5560 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5561
5562 if enabled aarch64; then
5563     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5564     # internal assembler in clang 3.3 does not support this instruction
5565     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5566     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5567
5568     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5569
5570 elif enabled alpha; then
5571
5572     check_cflags -mieee
5573
5574 elif enabled arm; then
5575
5576     enabled msvc && check_cpp_condition thumb stddef.h "defined _M_ARMT"
5577     test_cpp_condition stddef.h "defined __thumb__" && test_cc <<EOF && enable_weak thumb
5578 float func(float a, float b){ return a+b; }
5579 EOF
5580     enabled thumb && check_cflags -mthumb || check_cflags -marm
5581
5582     if check_cpp_condition vfp_args stddef.h "defined __ARM_PCS_VFP"; then
5583         :
5584     elif check_cpp_condition vfp_args stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5585         :
5586     elif ! test_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5587         case "${cross_prefix:-$cc}" in
5588             *hardfloat*) enable vfp_args; fpabi=vfp ;;
5589             *) check_ld "cc" vfp_args <<EOF && fpabi=vfp || fpabi=soft ;;
5590 __asm__ (".eabi_attribute 28, 1");
5591 int main(void) { return 0; }
5592 EOF
5593         esac
5594         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5595     fi
5596
5597     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5598     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5599     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5600     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5601     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5602     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5603     enabled setend  && check_insn setend  'setend be'
5604
5605     [ $target_os = linux ] || [ $target_os = android ] ||
5606         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5607             $ARCH_EXT_LIST_ARM
5608
5609     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5610
5611     check_as as_arch_directive ".arch armv7-a"
5612     check_as as_dn_directive   "ra .dn d0.i16"
5613     check_as as_fpu_directive  ".fpu neon"
5614
5615     # llvm's integrated assembler supports .object_arch from llvm 3.5
5616     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5617         check_as as_object_arch ".object_arch armv4"
5618
5619     # MS armasm fails to assemble our PIC constructs
5620     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5621
5622 elif enabled mips; then
5623
5624     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5625     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5626     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5627
5628     # Enable minimum ISA based on selected options
5629     if enabled mips64; then
5630         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5631         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5632         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5633     else
5634         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5635         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5636         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5637         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5638     fi
5639
5640     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5641     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5642     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_headers msa.h || disable msa
5643     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5644     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5645
5646     if enabled bigendian && enabled msa; then
5647         disable msa
5648     fi
5649
5650 elif enabled parisc; then
5651
5652     if enabled gcc; then
5653         case $($cc -dumpversion) in
5654             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5655         esac
5656     fi
5657
5658 elif enabled ppc; then
5659
5660     enable local_aligned
5661
5662     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5663     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5664     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5665     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5666
5667     if enabled altivec; then
5668         check_cflags -maltivec -mabi=altivec
5669
5670         # check if our compiler supports Motorola AltiVec C API
5671         check_cc altivec altivec.h "vector signed int v1 = (vector signed int) { 0 };
5672                                     vector signed int v2 = (vector signed int) { 1 };
5673                                     v1 = vec_add(v1, v2);"
5674
5675         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5676     fi
5677
5678     if enabled vsx; then
5679         check_cflags -mvsx &&
5680         check_cc vsx altivec.h "int v[4] = { 0 };
5681                                 vector signed int v1 = vec_vsx_ld(0, v);"
5682     fi
5683
5684     if enabled power8; then
5685         check_cpp_condition power8 "altivec.h" "defined(_ARCH_PWR8)"
5686     fi
5687
5688 elif enabled x86; then
5689
5690     check_builtin rdtsc    intrin.h   "__rdtsc()"
5691     check_builtin mm_empty mmintrin.h "_mm_empty()"
5692
5693     enable local_aligned
5694
5695     # check whether EBP is available on x86
5696     # As 'i' is stored on the stack, this program will crash
5697     # if the base pointer is used to access it because the
5698     # base pointer is cleared in the inline assembly code.
5699     check_exec_crash <<EOF && enable ebp_available
5700 volatile int i=0;
5701 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5702 return i;
5703 EOF
5704
5705     # check whether EBX is available on x86
5706     check_inline_asm ebx_available '""::"b"(0)' &&
5707         check_inline_asm ebx_available '"":::"%ebx"'
5708
5709     # check whether xmm clobbers are supported
5710     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5711
5712     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5713         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5714
5715     # check whether binutils is new enough to compile SSSE3/MMXEXT
5716     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5717     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5718
5719     probe_x86asm(){
5720         x86asmexe_probe=$1
5721         if test_cmd $x86asmexe_probe -v; then
5722             x86asmexe=$x86asmexe_probe
5723             x86asm_type=nasm
5724             x86asm_debug="-g -F dwarf"
5725             X86ASMDEP=
5726             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5727         elif test_cmd $x86asmexe_probe --version; then
5728             x86asmexe=$x86asmexe_probe
5729             x86asm_type=yasm
5730             x86asm_debug="-g dwarf2"
5731             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
5732             X86ASM_DEPFLAGS=
5733         fi
5734         check_x86asm x86asm "movbe ecx, [5]"
5735     }
5736
5737     if ! disabled_any asm mmx x86asm; then
5738         disable x86asm
5739         for program in $x86asmexe nasm yasm; do
5740             probe_x86asm $program && break
5741         done
5742         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
5743         X86ASMFLAGS="-f $objformat"
5744         enabled pic               && append X86ASMFLAGS "-DPIC"
5745         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
5746         case "$objformat" in
5747             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
5748         esac
5749
5750         check_x86asm avx512_external "vmovdqa32 [eax]{k1}{z}, zmm0"
5751         check_x86asm avx2_external   "vextracti128 xmm0, ymm0, 0"
5752         check_x86asm xop_external    "vpmacsdd xmm0, xmm1, xmm2, xmm3"
5753         check_x86asm fma4_external   "vfmaddps ymm0, ymm1, ymm2, ymm3"
5754         check_x86asm cpunop          "CPU amdnop"
5755     fi
5756
5757     case "$cpu" in
5758         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5759             disable fast_clz
5760         ;;
5761     esac
5762
5763 fi
5764
5765 check_cc intrinsics_neon arm_neon.h "int16x8_t test = vdupq_n_s16(0)"
5766
5767 check_ldflags -Wl,--as-needed
5768 check_ldflags -Wl,-z,noexecstack
5769
5770 if ! disabled network; then
5771     check_func getaddrinfo $network_extralibs
5772     check_func inet_aton $network_extralibs
5773
5774     check_type netdb.h "struct addrinfo"
5775     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5776     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5777     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5778     check_type poll.h "struct pollfd"
5779     check_type netinet/sctp.h "struct sctp_event_subscribe"
5780     check_struct "sys/socket.h" "struct msghdr" msg_flags
5781     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5782     check_type netinet/in.h "struct sockaddr_in6"
5783     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5784     check_type "sys/types.h sys/socket.h" socklen_t
5785
5786     # Prefer arpa/inet.h over winsock2
5787     if check_headers arpa/inet.h ; then
5788         check_func closesocket
5789     elif check_headers winsock2.h ; then
5790         check_func_headers winsock2.h closesocket -lws2 &&
5791             network_extralibs="-lws2" ||
5792         { check_func_headers winsock2.h closesocket -lws2_32 &&
5793             network_extralibs="-lws2_32"; } || disable winsock2_h network
5794         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5795
5796         check_type ws2tcpip.h socklen_t
5797         check_type ws2tcpip.h "struct addrinfo"
5798         check_type ws2tcpip.h "struct group_source_req"
5799         check_type ws2tcpip.h "struct ip_mreq_source"
5800         check_type ws2tcpip.h "struct ipv6_mreq"
5801         check_type winsock2.h "struct pollfd"
5802         check_struct winsock2.h "struct sockaddr" sa_len
5803         check_type ws2tcpip.h "struct sockaddr_in6"
5804         check_type ws2tcpip.h "struct sockaddr_storage"
5805     else
5806         disable network
5807     fi
5808 fi
5809
5810 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5811 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5812 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5813 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5814 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5815 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5816 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5817
5818 case "$custom_allocator" in
5819     jemalloc)
5820         # jemalloc by default does not use a prefix
5821         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5822     ;;
5823     tcmalloc)
5824         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
5825         malloc_prefix=tc_
5826     ;;
5827 esac
5828
5829 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5830 check_func  ${malloc_prefix}memalign            && enable memalign
5831 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5832
5833 check_func  access
5834 check_func_headers stdlib.h arc4random
5835 check_lib   clock_gettime time.h clock_gettime || check_lib clock_gettime time.h clock_gettime -lrt
5836 check_func  fcntl
5837 check_func  fork
5838 check_func  gethrtime
5839 check_func  getopt
5840 check_func  getrusage
5841 check_func  gettimeofday
5842 check_func  isatty
5843 check_func  mkstemp
5844 check_func  mmap
5845 check_func  mprotect
5846 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5847 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
5848 check_func  sched_getaffinity
5849 check_func  setrlimit
5850 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5851 check_func  strerror_r
5852 check_func  sysconf
5853 check_func  sysctl
5854 check_func  usleep
5855
5856 check_func_headers conio.h kbhit
5857 check_func_headers io.h setmode
5858 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5859 check_func_headers mach/mach_time.h mach_absolute_time
5860 check_func_headers stdlib.h getenv
5861 check_func_headers sys/stat.h lstat
5862
5863 check_func_headers windows.h GetProcessAffinityMask
5864 check_func_headers windows.h GetProcessTimes
5865 check_func_headers windows.h GetSystemTimeAsFileTime
5866 check_func_headers windows.h LoadLibrary
5867 check_func_headers windows.h MapViewOfFile
5868 check_func_headers windows.h PeekNamedPipe
5869 check_func_headers windows.h SetConsoleTextAttribute
5870 check_func_headers windows.h SetConsoleCtrlHandler
5871 check_func_headers windows.h Sleep
5872 check_func_headers windows.h VirtualAlloc
5873 check_func_headers glob.h glob
5874 enabled xlib &&
5875     check_lib xlib "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5876
5877 check_headers direct.h
5878 check_headers dirent.h
5879 check_headers dxgidebug.h
5880 check_headers dxva.h
5881 check_headers dxva2api.h -D_WIN32_WINNT=0x0600
5882 check_headers io.h
5883 check_headers linux/perf_event.h
5884 check_headers libcrystalhd/libcrystalhd_if.h
5885 check_headers malloc.h
5886 check_headers net/udplite.h
5887 check_headers poll.h
5888 check_headers sys/param.h
5889 check_headers sys/resource.h
5890 check_headers sys/select.h
5891 check_headers sys/time.h
5892 check_headers sys/un.h
5893 check_headers termios.h
5894 check_headers unistd.h
5895 check_headers valgrind/valgrind.h
5896 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5897 check_headers windows.h
5898 check_headers X11/extensions/XvMClib.h
5899 check_headers asm/types.h
5900
5901 # it seems there are versions of clang in some distros that try to use the
5902 # gcc headers, which explodes for stdatomic
5903 # so we also check that atomics actually work here
5904 check_builtin stdatomic stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0); foo += bar"
5905
5906 check_lib advapi32 "windows.h"            RegCloseKey          -ladvapi32
5907 check_lib bcrypt   "windows.h bcrypt.h"   BCryptGenRandom      -lbcrypt &&
5908     check_cpp_condition bcrypt bcrypt.h "defined BCRYPT_RNG_ALGORITHM"
5909 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
5910 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
5911 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
5912
5913 check_lib android android/native_window.h ANativeWindow_acquire -landroid
5914 check_lib mediandk "stdint.h media/NdkImage.h" AImage_delete -lmediandk
5915 check_lib camera2ndk "stdbool.h stdint.h camera/NdkCameraManager.h" ACameraManager_create -lcamera2ndk
5916
5917 enabled appkit       && check_apple_framework AppKit
5918 enabled audiotoolbox && check_apple_framework AudioToolbox
5919 enabled avfoundation && check_apple_framework AVFoundation
5920 enabled coreimage    && check_apple_framework CoreImage
5921 enabled videotoolbox && check_apple_framework VideoToolbox
5922
5923 check_apple_framework CoreFoundation
5924 check_apple_framework CoreMedia
5925 check_apple_framework CoreVideo
5926
5927 enabled avfoundation && {
5928     disable coregraphics applicationservices
5929     check_lib coregraphics        CoreGraphics/CoreGraphics.h               CGGetActiveDisplayList "-framework CoreGraphics" ||
5930     check_lib applicationservices ApplicationServices/ApplicationServices.h CGGetActiveDisplayList "-framework ApplicationServices"; }
5931
5932 enabled videotoolbox && {
5933     check_lib coreservices CoreServices/CoreServices.h UTGetOSTypeFromString "-framework CoreServices"
5934     check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_HEVC "-framework CoreMedia"
5935 }
5936
5937 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5938
5939 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5940 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5941 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5942 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5943 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5944
5945 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
5946 check_type "va/va.h va/va_dec_vp8.h" "VAPictureParameterBufferVP8"
5947 check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
5948 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
5949 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
5950 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5951 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5952 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
5953 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
5954 check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
5955
5956 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5957
5958 if ! disabled ffnvcodec; then
5959     check_pkg_config ffnvcodec "ffnvcodec >= 8.1.24.2" \
5960           "ffnvcodec/nvEncodeAPI.h ffnvcodec/dynlink_cuda.h ffnvcodec/dynlink_cuviddec.h ffnvcodec/dynlink_nvcuvid.h" "" || \
5961       check_pkg_config ffnvcodec "ffnvcodec >= 8.0.14.2 ffnvcodec < 8.1" \
5962           "ffnvcodec/nvEncodeAPI.h ffnvcodec/dynlink_cuda.h ffnvcodec/dynlink_cuviddec.h ffnvcodec/dynlink_nvcuvid.h" ""
5963 fi
5964
5965 check_cpp_condition winrt windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)"
5966
5967 if ! disabled w32threads && ! enabled pthreads; then
5968     check_func_headers "windows.h process.h" _beginthreadex &&
5969         check_type "windows.h" CONDITION_VARIABLE &&
5970         check_type "windows.h" INIT_ONCE &&
5971         enable w32threads || disable w32threads
5972     if ! enabled w32threads && enabled winrt; then
5973         check_func_headers "windows.h" CreateThread &&
5974             enable w32threads || disable w32threads
5975     fi
5976 fi
5977
5978 # check for some common methods of building with pthread support
5979 # do this before the optional library checks as some of them require pthreads
5980 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5981     if check_lib pthreads pthread.h pthread_join   -pthread &&
5982        check_lib pthreads pthread.h pthread_create -pthread; then
5983         add_cflags -pthread
5984     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
5985          check_lib pthreads pthread.h pthread_create -pthreads; then
5986         add_cflags -pthreads
5987     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
5988          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
5989         add_cflags -ldl -pthread
5990     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
5991          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
5992         :
5993     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
5994          check_lib pthreads pthread.h pthread_create -lpthread; then
5995         :
5996     elif check_func pthread_join && check_func pthread_create; then
5997         enable pthreads
5998     fi
5999     check_cc pthreads "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER"
6000
6001     if enabled pthreads; then
6002         check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
6003         check_func pthread_cancel $pthreads_extralibs
6004     fi
6005 fi
6006
6007 enabled  zlib && { check_pkg_config zlib zlib "zlib.h" zlibVersion ||
6008                    check_lib zlib   zlib.h      zlibVersion    -lz; }
6009 enabled bzlib && check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
6010 enabled  lzma && check_lib lzma   lzma.h lzma_version_number -llzma
6011
6012 # On some systems dynamic loading requires no extra linker flags
6013 check_lib libdl dlfcn.h "dlopen dlsym" || check_lib libdl dlfcn.h "dlopen dlsym" -ldl
6014
6015 check_lib libm math.h sin -lm
6016
6017 atan2f_args=2
6018 copysign_args=2
6019 hypot_args=2
6020 ldexpf_args=2
6021 powf_args=2
6022
6023 for func in $MATH_FUNCS; do
6024     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
6025 done
6026
6027 for func in $COMPLEX_FUNCS; do
6028     eval check_complexfunc $func \${${func}_args:-1}
6029 done
6030
6031 # these are off by default, so fail if requested and not available
6032 enabled cuda_sdk          && require cuda_sdk cuda.h cuCtxCreate -lcuda
6033 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
6034 enabled decklink          && { require_headers DeckLinkAPI.h &&
6035                                { test_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a060100" || die "ERROR: Decklink API version must be >= 10.6.1."; } }
6036 enabled libndi_newtek     && require_headers Processing.NDI.Lib.h
6037 enabled frei0r            && require_headers frei0r.h
6038 enabled gmp               && require gmp gmp.h mpz_export -lgmp
6039 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
6040 enabled jni               && { [ $target_os = "android" ] && check_headers jni.h && enabled pthreads || die "ERROR: jni not found"; }
6041 enabled ladspa            && require_headers ladspa.h
6042 enabled libaom            && require_pkg_config libaom "aom >= 1.0.0" aom/aom_codec.h aom_codec_version
6043 enabled lv2               && require_pkg_config lv2 lilv-0 "lilv/lilv.h" lilv_world_new
6044 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
6045 enabled libass            && require_pkg_config libass libass ass/ass.h ass_library_init
6046 enabled libbluray         && require_pkg_config libbluray libbluray libbluray/bluray.h bd_open
6047 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
6048 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
6049                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
6050                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
6051 enabled libcaca           && require_pkg_config libcaca caca caca.h caca_create_canvas
6052 enabled libcodec2         && require libcodec2 codec2/codec2.h codec2_create -lcodec2
6053 enabled libdavs2          && require_pkg_config libdavs2 "davs2 >= 1.5.115" davs2.h davs2_decoder_open
6054 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
6055 enabled libdrm            && require_pkg_config libdrm libdrm xf86drm.h drmGetVersion
6056 enabled libfdk_aac        && { check_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
6057                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
6058                                  warn "using libfdk without pkg-config"; } }
6059 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"
6060 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
6061 enabled fontconfig        && enable libfontconfig
6062 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
6063 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
6064 enabled libfribidi        && require_pkg_config libfribidi fribidi fribidi.h fribidi_version_info
6065 enabled libgme            && { check_pkg_config libgme libgme gme/gme.h gme_new_emu ||
6066                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }
6067 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
6068                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
6069                                done || die "ERROR: libgsm not found"; }
6070 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc $pthreads_extralibs
6071 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
6072 enabled liblensfun        && require_pkg_config liblensfun lensfun lensfun.h lf_db_new
6073 # While it may appear that require is being used as a pkg-config
6074 # fallback for libmfx, it is actually being used to detect a different
6075 # installation route altogether.  If libmfx is installed via the Intel
6076 # Media SDK or Intel Media Server Studio, these don't come with
6077 # pkg-config support.  Instead, users should make sure that the build
6078 # can find the libraries and headers through other means.
6079 enabled libmfx            && { check_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit ||
6080                                { require libmfx "mfx/mfxvideo.h" MFXInit "-llibmfx $advapi32_extralibs" && warn "using libmfx without pkg-config"; } }
6081 enabled libmodplug        && require_pkg_config libmodplug libmodplug libmodplug/modplug.h ModPlug_Load
6082 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame $libm_extralibs
6083 enabled libmysofa         && { check_pkg_config libmysofa libmysofa mysofa.h mysofa_load ||
6084                                require libmysofa mysofa.h mysofa_load -lmysofa $zlib_extralibs; }
6085 enabled libnpp            && { check_lib libnpp npp.h nppGetLibVersion -lnppig -lnppicc -lnppc ||
6086                                check_lib libnpp npp.h nppGetLibVersion -lnppi -lnppc ||
6087                                die "ERROR: libnpp not found"; }
6088 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
6089 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
6090 enabled libopencv         && { check_headers opencv2/core/core_c.h &&
6091                                { check_pkg_config libopencv opencv opencv2/core/core_c.h cvCreateImageHeader ||
6092                                  require libopencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
6093                                require_pkg_config libopencv opencv opencv/cxcore.h cvCreateImageHeader; }
6094 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
6095 enabled libopenjpeg       && { check_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version ||
6096                                { require_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } }
6097 enabled libopenmpt        && require_pkg_config libopenmpt "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create -lstdc++ && append libopenmpt_extralibs "-lstdc++"
6098 enabled libopus           && {
6099     enabled libopus_decoder && {
6100         require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
6101     }
6102     enabled libopus_encoder && {
6103         require_pkg_config libopus opus opus_multistream.h opus_multistream_surround_encoder_create
6104     }
6105 }
6106 enabled libpulse          && require_pkg_config libpulse libpulse pulse/pulseaudio.h pa_context_new
6107 enabled librsvg           && require_pkg_config librsvg librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
6108 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
6109 enabled librubberband     && require_pkg_config librubberband "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new -lstdc++ && append librubberband_extralibs "-lstdc++"
6110 enabled libshine          && require_pkg_config libshine shine shine/layer3.h shine_encode_buffer
6111 enabled libsmbclient      && { check_pkg_config libsmbclient smbclient libsmbclient.h smbc_init ||
6112                                require libsmbclient libsmbclient.h smbc_init -lsmbclient; }
6113 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy -lstdc++
6114 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
6115 enabled libssh            && require_pkg_config libssh libssh libssh/sftp.h sftp_init
6116 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init
6117 enabled libsrt            && require_pkg_config libsrt "srt >= 1.3.0" srt/srt.h srt_socket
6118 enabled libtensorflow     && require libtensorflow tensorflow/c/c_api.h TF_Version -ltensorflow
6119 enabled libtesseract      && require_pkg_config libtesseract tesseract tesseract/capi.h TessBaseAPICreate
6120 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
6121 enabled libtls            && require_pkg_config libtls libtls tls.h tls_configure
6122 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
6123                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
6124                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
6125 enabled libv4l2           && require_pkg_config libv4l2 libv4l2 libv4l2.h v4l2_ioctl
6126 enabled libvidstab        && require_pkg_config libvidstab "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
6127 enabled libvmaf           && require_pkg_config libvmaf "libvmaf >= 1.3.9" libvmaf.h compute_vmaf
6128 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
6129 enabled libvorbis         && require_pkg_config libvorbis vorbis vorbis/codec.h vorbis_info_init &&
6130                              require_pkg_config libvorbisenc vorbisenc vorbis/vorbisenc.h vorbis_encode_init
6131
6132 enabled libvpx            && {
6133     enabled libvpx_vp8_decoder && {
6134         check_pkg_config libvpx_vp8_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
6135             check_lib libvpx_vp8_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_dec_init_ver VPX_IMG_FMT_HIGHBITDEPTH" -lvpx ||
6136                 die "ERROR: libvpx decoder version must be >=1.4.0";
6137     }
6138     enabled libvpx_vp8_encoder && {
6139         check_pkg_config libvpx_vp8_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
6140             check_lib libvpx_vp8_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VPX_IMG_FMT_HIGHBITDEPTH" -lvpx ||
6141                 die "ERROR: libvpx encoder version must be >=1.4.0";
6142     }
6143     enabled libvpx_vp9_decoder && {
6144         check_pkg_config libvpx_vp9_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
6145             check_lib libvpx_vp9_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx VPX_IMG_FMT_HIGHBITDEPTH" "-lvpx $libm_extralibs"
6146     }
6147     enabled libvpx_vp9_encoder && {
6148         check_pkg_config libvpx_vp9_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
6149             check_lib libvpx_vp9_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VPX_IMG_FMT_HIGHBITDEPTH" "-lvpx $libm_extralibs"
6150     }
6151     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
6152         die "libvpx enabled but no supported decoders found"
6153     fi
6154 }
6155
6156 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
6157 enabled libwebp           && {
6158     enabled libwebp_encoder      && require_pkg_config libwebp "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
6159     enabled libwebp_anim_encoder && check_pkg_config libwebp_anim_encoder "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit; }
6160 enabled libx264           && { check_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode ||
6161                                { require libx264 "stdint.h x264.h" x264_encoder_encode "-lx264 $pthreads_extralibs $libm_extralibs" &&
6162                                  warn "using libx264 without pkg-config"; } } &&
6163                              require_cpp_condition libx264 x264.h "X264_BUILD >= 118" &&
6164                              check_cpp_condition libx262 x264.h "X264_MPEG2"
6165 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
6166                              require_cpp_condition libx265 x265.h "X265_BUILD >= 68"
6167 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode "-lxavs $pthreads_extralibs $libm_extralibs"
6168 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
6169 enabled libzimg           && require_pkg_config libzimg "zimg >= 2.7.0" zimg.h zimg_get_api_version
6170 enabled libzmq            && require_pkg_config libzmq libzmq zmq.h zmq_ctx_new
6171 enabled libzvbi           && require_pkg_config libzvbi zvbi-0.2 libzvbi.h vbi_decoder_new &&
6172                              { test_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
6173                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
6174 enabled libxml2           && require_pkg_config libxml2 libxml-2.0 libxml2/libxml/xmlversion.h xmlCheckVersion
6175 enabled mbedtls           && { check_pkg_config mbedtls mbedtls mbedtls/x509_crt.h mbedtls_x509_crt_init ||
6176                                check_pkg_config mbedtls mbedtls mbedtls/ssl.h mbedtls_ssl_init ||
6177                                check_lib mbedtls mbedtls/ssl.h mbedtls_ssl_init -lmbedtls -lmbedx509 -lmbedcrypto ||
6178                                die "ERROR: mbedTLS not found"; }
6179 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
6180 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
6181                                { ! enabled cross_compile &&
6182                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
6183                                  add_ldflags -L/opt/vc/lib/ &&
6184                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
6185                                die "ERROR: mmal not found" &&
6186                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
6187 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
6188                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
6189                                die "ERROR: openal not found"; } &&
6190                              { test_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
6191                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
6192 enabled opencl            && { check_pkg_config opencl OpenCL CL/cl.h clEnqueueNDRangeKernel ||
6193                                check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
6194                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
6195                                die "ERROR: opencl not found"; } &&
6196                              { test_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
6197                                test_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
6198                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
6199 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
6200                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
6201                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
6202                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
6203                                die "ERROR: opengl not found."
6204                              }
6205 enabled omx               && require_headers OMX_Core.h
6206 enabled omx_rpi           && { check_headers OMX_Core.h ||
6207                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_headers OMX_Core.h ; } ||
6208                                die "ERROR: OpenMAX IL headers not found"; } && enable omx
6209 enabled openssl           && { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
6210                                check_pkg_config openssl openssl openssl/ssl.h SSL_library_init ||
6211                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
6212                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
6213                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
6214                                die "ERROR: openssl not found"; }
6215 enabled rkmpp             && { require_pkg_config rkmpp rockchip_mpp  rockchip/rk_mpi.h mpp_create &&
6216                                require_pkg_config rockchip_mpp "rockchip_mpp >= 1.3.7" rockchip/rk_mpi.h mpp_create &&
6217                                { enabled libdrm ||
6218                                  die "ERROR: rkmpp requires --enable-libdrm"; }
6219                              }
6220 enabled vapoursynth       && require_pkg_config vapoursynth "vapoursynth-script >= 42" VSScript.h vsscript_init
6221
6222
6223 if enabled gcrypt; then
6224     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
6225     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
6226         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
6227         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
6228         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
6229             die "ERROR: gcrypt not found"
6230         add_cflags $gcrypt_cflags
6231     else
6232         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
6233     fi
6234 fi
6235
6236 if enabled sdl2; then
6237     SDL2_CONFIG="${cross_prefix}sdl2-config"
6238     test_pkg_config sdl2 "sdl2 >= 2.0.1 sdl2 < 2.1.0" SDL_events.h SDL_PollEvent
6239     if disabled sdl2 && "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6240         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6241         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6242         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6243         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6244         check_func_headers SDL_events.h SDL_PollEvent $sdl2_extralibs $sdl2_cflags &&
6245             enable sdl2
6246     fi
6247     if test $target_os = "mingw32"; then
6248         sdl2_extralibs=$(filter_out '-mwindows' $sdl2_extralibs)
6249     fi
6250 fi
6251
6252 if enabled decklink; then
6253     case $target_os in
6254         mingw32*|mingw64*|win32|win64)
6255             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6256             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6257             ;;
6258     esac
6259 fi
6260
6261 enabled securetransport &&
6262     check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6263     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" ||
6264         disable securetransport
6265
6266 enabled securetransport &&
6267     check_func SecItemImport "-Wl,-framework,CoreFoundation -Wl,-framework,Security"
6268
6269 enabled schannel &&
6270     check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6271     test_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" &&
6272     schannel_extralibs="-lsecur32" ||
6273         disable schannel
6274
6275 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6276 enabled makeinfo \
6277     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6278     && enable makeinfo_html || disable makeinfo_html
6279 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6280 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6281 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6282 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6283
6284 # check V4L2 codecs available in the API
6285 check_headers linux/fb.h
6286 check_headers linux/videodev2.h
6287 test_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6288 check_cc v4l2_m2m linux/videodev2.h "int i = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_VIDEO_M2M | V4L2_BUF_FLAG_LAST;"
6289 check_cc vc1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VC1_ANNEX_G;"
6290 check_cc mpeg1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG1;"
6291 check_cc mpeg2_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG2;"
6292 check_cc mpeg4_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG4;"
6293 check_cc hevc_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_HEVC;"
6294 check_cc h263_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H263;"
6295 check_cc h264_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H264;"
6296 check_cc vp8_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP8;"
6297 check_cc vp9_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP9;"
6298
6299 check_headers sys/videoio.h
6300 test_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6301
6302 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6303 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6304 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6305 # w32api 3.12 had it defined wrong
6306 check_cpp_condition vfwcap_defines vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER"
6307
6308 check_type "dshow.h" IBaseFilter
6309
6310 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6311 check_headers "dev/bktr/ioctl_meteor.h dev/bktr/ioctl_bt848.h"                   ||
6312     check_headers "machine/ioctl_meteor.h machine/ioctl_bt848.h"                 ||
6313     check_headers "dev/video/meteor/ioctl_meteor.h dev/video/bktr/ioctl_bt848.h" ||
6314     check_headers "dev/ic/bt8xx.h"
6315
6316 if check_struct sys/soundcard.h audio_buf_info bytes; then
6317     enable_sanitized sys/soundcard.h
6318 else
6319     test_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_sanitized sys/soundcard.h
6320     #include <sys/soundcard.h>
6321     audio_buf_info abc;
6322 EOF
6323 fi
6324
6325 enabled alsa && check_pkg_config alsa alsa "alsa/asoundlib.h" snd_pcm_htimestamp ||
6326     check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
6327
6328 enabled libjack &&
6329     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
6330
6331 enabled sndio && check_lib sndio sndio.h sio_open -lsndio
6332
6333 if enabled libcdio; then
6334     check_pkg_config libcdio libcdio_paranoia "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open ||
6335     check_pkg_config libcdio libcdio_paranoia "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open ||
6336     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6337     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6338     die "ERROR: No usable libcdio/cdparanoia found"
6339 fi
6340
6341 enabled libxcb && check_pkg_config libxcb "xcb >= 1.4" xcb/xcb.h xcb_connect ||
6342     disable libxcb_shm libxcb_shape libxcb_xfixes
6343
6344 if enabled libxcb; then
6345     enabled libxcb_shm    && check_pkg_config libxcb_shm    xcb-shm    xcb/shm.h    xcb_shm_attach
6346     enabled libxcb_shape  && check_pkg_config libxcb_shape  xcb-shape  xcb/shape.h  xcb_shape_get_rectangles
6347     enabled libxcb_xfixes && check_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
6348 fi
6349
6350 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6351
6352 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6353 # the desktop api partition
6354 test_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
6355 #ifdef WINAPI_FAMILY
6356 #include <winapifamily.h>
6357 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
6358 #error desktop, not uwp
6359 #else
6360 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
6361 #endif
6362 #else
6363 #error no family set
6364 #endif
6365 EOF
6366
6367 enabled vaapi &&
6368     check_lib vaapi va/va.h vaInitialize -lva
6369
6370 enabled vaapi &&
6371     check_cc vaapi "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)"
6372
6373 if enabled vaapi; then
6374     check_lib vaapi_drm "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm
6375     check_lib vaapi_x11 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 -lX11
6376 fi
6377
6378 enabled vaapi &&
6379     check_cpp_condition vaapi_1 "va/va.h" "VA_CHECK_VERSION(1, 0, 0)"
6380
6381 if enabled_all opencl libdrm ; then
6382     check_type "CL/cl_intel.h" "clCreateImageFromFdINTEL_fn" &&
6383         enable opencl_drm_beignet
6384     check_func_headers "CL/cl_ext.h" clImportMemoryARM &&
6385         enable opencl_drm_arm
6386 fi
6387
6388 if enabled_all opencl vaapi ; then
6389     enabled opencl_drm_beignet && enable opencl_vaapi_beignet
6390     check_type "CL/cl.h CL/va_ext.h" "clCreateFromVA_APIMediaSurfaceINTEL_fn" &&
6391         enable opencl_vaapi_intel_media
6392 fi
6393
6394 if enabled_all opencl dxva2 ; then
6395     check_type "CL/cl_dx9_media_sharing.h" cl_dx9_surface_info_khr &&
6396         enable opencl_dxva2
6397 fi
6398
6399 if enabled_all opencl d3d11va ; then
6400     check_type "CL/cl_d3d11.h" clGetDeviceIDsFromD3D11KHR_fn &&
6401         enable opencl_d3d11
6402 fi
6403
6404 enabled vdpau &&
6405     check_cpp_condition vdpau vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP"
6406
6407 enabled vdpau &&
6408     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6409
6410 enabled crystalhd && check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
6411
6412 if enabled x86; then
6413     case $target_os in
6414         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6415             ;;
6416         *)
6417             disable ffnvcodec cuvid nvdec nvenc
6418             ;;
6419     esac
6420 else
6421     disable ffnvcodec cuvid nvdec nvenc
6422 fi
6423
6424 enabled ffnvcodec && enable cuda
6425
6426 enabled nvenc &&
6427     test_cc -I$source_path <<EOF || disable nvenc
6428 #include <ffnvcodec/nvEncodeAPI.h>
6429 NV_ENCODE_API_FUNCTION_LIST flist;
6430 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6431 int main(void) { return 0; }
6432 EOF
6433
6434 enabled amf &&
6435     check_cpp_condition amf "AMF/core/Version.h" \
6436         "(AMF_VERSION_MAJOR << 48 | AMF_VERSION_MINOR << 32 | AMF_VERSION_RELEASE << 16 | AMF_VERSION_BUILD_NUM) >= 0x0001000400040001"
6437
6438 # Funny iconv installations are not unusual, so check it after all flags have been set
6439 if enabled libc_iconv; then
6440     check_func_headers iconv.h iconv
6441 elif enabled iconv; then
6442     check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6443 fi
6444
6445 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6446
6447 # add some useful compiler flags if supported
6448 check_cflags -Wdeclaration-after-statement
6449 check_cflags -Wall
6450 check_cflags -Wdisabled-optimization
6451 check_cflags -Wpointer-arith
6452 check_cflags -Wredundant-decls
6453 check_cflags -Wwrite-strings
6454 check_cflags -Wtype-limits
6455 check_cflags -Wundef
6456 check_cflags -Wmissing-prototypes
6457 check_cflags -Wno-pointer-to-int-cast
6458 check_cflags -Wstrict-prototypes
6459 check_cflags -Wempty-body
6460
6461 if enabled extra_warnings; then
6462     check_cflags -Wcast-qual
6463     check_cflags -Wextra
6464     check_cflags -Wpedantic
6465 fi
6466
6467 check_disable_warning(){
6468     warning_flag=-W${1#-Wno-}
6469     test_cflags $unknown_warning_flags $warning_flag && add_cflags $1
6470 }
6471
6472 test_cflags -Werror=unused-command-line-argument &&
6473     append unknown_warning_flags "-Werror=unused-command-line-argument"
6474 test_cflags -Werror=unknown-warning-option &&
6475     append unknown_warning_flags "-Werror=unknown-warning-option"
6476
6477 check_disable_warning -Wno-parentheses
6478 check_disable_warning -Wno-switch
6479 check_disable_warning -Wno-format-zero-length
6480 check_disable_warning -Wno-pointer-sign
6481 check_disable_warning -Wno-unused-const-variable
6482 check_disable_warning -Wno-bool-operation
6483
6484 check_disable_warning_headers(){
6485     warning_flag=-W${1#-Wno-}
6486     test_cflags $warning_flag && add_cflags_headers $1
6487 }
6488
6489 check_disable_warning_headers -Wno-deprecated-declarations
6490 check_disable_warning_headers -Wno-unused-variable
6491
6492 test_cc <<EOF && enable blocks_extension
6493 void (^block)(void);
6494 EOF
6495
6496 # add some linker flags
6497 check_ldflags -Wl,--warn-common
6498 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6499 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir && add_ldsoflags -Wl,-rpath,$libdir
6500 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6501
6502 # add some strip flags
6503 check_stripflags -x
6504
6505 enabled neon_clobber_test &&
6506     check_ldflags -Wl,--wrap,avcodec_open2              \
6507                   -Wl,--wrap,avcodec_decode_audio4      \
6508                   -Wl,--wrap,avcodec_decode_video2      \
6509                   -Wl,--wrap,avcodec_decode_subtitle2   \
6510                   -Wl,--wrap,avcodec_encode_audio2      \
6511                   -Wl,--wrap,avcodec_encode_video2      \
6512                   -Wl,--wrap,avcodec_encode_subtitle    \
6513                   -Wl,--wrap,avcodec_send_packet        \
6514                   -Wl,--wrap,avcodec_receive_packet     \
6515                   -Wl,--wrap,avcodec_send_frame         \
6516                   -Wl,--wrap,avcodec_receive_frame      \
6517                   -Wl,--wrap,swr_convert                \
6518                   -Wl,--wrap,avresample_convert ||
6519     disable neon_clobber_test
6520
6521 enabled xmm_clobber_test &&
6522     check_ldflags -Wl,--wrap,avcodec_open2              \
6523                   -Wl,--wrap,avcodec_decode_audio4      \
6524                   -Wl,--wrap,avcodec_decode_video2      \
6525                   -Wl,--wrap,avcodec_decode_subtitle2   \
6526                   -Wl,--wrap,avcodec_encode_audio2      \
6527                   -Wl,--wrap,avcodec_encode_video2      \
6528                   -Wl,--wrap,avcodec_encode_subtitle    \
6529                   -Wl,--wrap,avcodec_send_packet        \
6530                   -Wl,--wrap,avcodec_receive_packet     \
6531                   -Wl,--wrap,avcodec_send_frame         \
6532                   -Wl,--wrap,avcodec_receive_frame      \
6533                   -Wl,--wrap,swr_convert                \
6534                   -Wl,--wrap,avresample_convert         \
6535                   -Wl,--wrap,sws_scale ||
6536     disable xmm_clobber_test
6537
6538 check_ld "cc" proper_dce <<EOF
6539 extern const int array[512];
6540 static inline int func(void) { return array[0]; }
6541 int main(void) { return 0; }
6542 EOF
6543
6544 if enabled proper_dce; then
6545     echo "X { local: *; };" > $TMPV
6546     if test_ldflags -Wl,${version_script},$TMPV; then
6547         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6548         quotes='""'
6549         test_cc <<EOF && enable symver_asm_label
6550 void ff_foo(void) __asm__ ("av_foo@VERSION");
6551 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6552 EOF
6553         test_cc <<EOF && enable symver_gnu_asm
6554 __asm__(".symver ff_foo,av_foo@VERSION");
6555 void ff_foo(void) {}
6556 EOF
6557     fi
6558 fi
6559
6560 if [ -z "$optflags" ]; then
6561     if enabled small; then
6562         optflags=$cflags_size
6563     elif enabled optimizations; then
6564         optflags=$cflags_speed
6565     else
6566         optflags=$cflags_noopt
6567     fi
6568 fi
6569
6570 if [ -z "$nvccflags" ]; then
6571     nvccflags=$nvccflags_default
6572 fi
6573
6574 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6575     nvccflags="$nvccflags -m64"
6576 else
6577     nvccflags="$nvccflags -m32"
6578 fi
6579
6580 check_optflags(){
6581     check_cflags "$@"
6582     enabled lto && check_ldflags "$@"
6583 }
6584
6585 check_optflags $optflags
6586 check_optflags -fno-math-errno
6587 check_optflags -fno-signed-zeros
6588
6589 if enabled lto; then
6590     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6591     check_cflags  -flto
6592     check_ldflags -flto $cpuflags
6593     disable inline_asm_direct_symbol_refs
6594 fi
6595
6596 enabled ftrapv && check_cflags -ftrapv
6597
6598 test_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6599 int x;
6600 EOF
6601
6602
6603 if enabled icc; then
6604     # Just warnings, no remarks
6605     check_cflags -w1
6606     # -wd: Disable following warnings
6607     # 144, 167, 556: -Wno-pointer-sign
6608     # 188: enumerated type mixed with another type
6609     # 1292: attribute "foo" ignored
6610     # 1419: external declaration in primary source file
6611     # 10006: ignoring unknown option -fno-signed-zeros
6612     # 10148: ignoring unknown option -Wno-parentheses
6613     # 10156: ignoring option '-W'; no argument required
6614     # 13200: No EMMS instruction before call to function
6615     # 13203: No EMMS instruction before return from function
6616     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6617     # 11030: Warning unknown option --as-needed
6618     # 10156: ignoring option '-export'; no argument required
6619     check_ldflags -wd10156,11030
6620     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6621     enable ebp_available
6622     # The test above does not test linking
6623     enabled lto && disable symver_asm_label
6624     if enabled x86_32; then
6625         icc_version=$($cc -dumpversion)
6626         test ${icc_version%%.*} -ge 11 &&
6627             check_cflags -falign-stack=maintain-16-byte ||
6628             disable aligned_stack
6629     fi
6630 elif enabled gcc; then
6631     check_optflags -fno-tree-vectorize
6632     check_cflags -Werror=format-security
6633     check_cflags -Werror=implicit-function-declaration
6634     check_cflags -Werror=missing-prototypes
6635     check_cflags -Werror=return-type
6636     check_cflags -Werror=vla
6637     check_cflags -Wformat
6638     check_cflags -fdiagnostics-color=auto
6639     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6640     if enabled x86_32; then
6641         case $target_os in
6642         *bsd*)
6643             # BSDs don't guarantee a 16 byte aligned stack, but we can
6644             # request GCC to try to maintain 16 byte alignment throughout
6645             # function calls. Library entry points that might call assembly
6646             # functions align the stack. (The parameter means 2^4 bytes.)
6647             check_cflags -mpreferred-stack-boundary=4
6648             ;;
6649         esac
6650     fi
6651 elif enabled llvm_gcc; then
6652     check_cflags -mllvm -stack-alignment=16
6653 elif enabled clang; then
6654     if enabled x86_32; then
6655         # Clang doesn't support maintaining alignment without assuming the
6656         # same alignment in every function. If 16 byte alignment would be
6657         # enabled, one would also have to either add attribute_align_arg on
6658         # every single entry point into the libraries or enable -mstackrealign
6659         # (doing stack realignment in every single function).
6660         case $target_os in
6661         mingw32|win32|*bsd*)
6662             disable aligned_stack
6663             ;;
6664         *)
6665             check_cflags -mllvm -stack-alignment=16
6666             check_cflags -mstack-alignment=16
6667             ;;
6668         esac
6669     else
6670         check_cflags -mllvm -stack-alignment=16
6671         check_cflags -mstack-alignment=16
6672     fi
6673     check_cflags -Qunused-arguments
6674     check_cflags -Werror=implicit-function-declaration
6675     check_cflags -Werror=missing-prototypes
6676     check_cflags -Werror=return-type
6677 elif enabled cparser; then
6678     add_cflags -Wno-missing-variable-declarations
6679     add_cflags -Wno-empty-statement
6680 elif enabled armcc; then
6681     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6682     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6683     # 2523: use of inline assembly is deprecated
6684     add_cflags -W${armcc_opt},--diag_suppress=2523
6685     add_cflags -W${armcc_opt},--diag_suppress=1207
6686     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6687     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6688     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6689     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6690 elif enabled pathscale; then
6691     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6692     disable inline_asm
6693 elif enabled_any msvc icl; then
6694     enabled x86_32 && disable aligned_stack
6695     enabled_all x86_32 debug && add_cflags -Oy-
6696     enabled debug && add_ldflags -debug
6697     enable pragma_deprecated
6698     if enabled icl; then
6699         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6700         # (correctly) on icl 13.x.
6701         test_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6702             add_cflags -Qansi-alias
6703         # Some inline asm is not compilable in debug
6704         if enabled debug; then
6705             disable ebp_available
6706             disable ebx_available
6707         fi
6708     fi
6709     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6710     check_cpp_condition log2 crtversion.h "_VC_CRT_MAJOR_VERSION >= 12"
6711     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6712     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6713     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6714     # MSVC 2013 and newer can handle it fine.
6715     # If this declspec fails, force including stdlib.h before the restrict redefinition
6716     # happens in config.h.
6717     if [ $restrict_keyword != restrict ]; then
6718         test_cc <<EOF || add_cflags -FIstdlib.h
6719 __declspec($restrict_keyword) void *foo(int);
6720 EOF
6721     fi
6722     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6723     # Issue has been fixed in MSVC v19.00.24218.
6724     test_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6725         check_cflags -d2SSAOptimizer-
6726     # enable utf-8 source processing on VS2015 U2 and newer
6727     test_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6728         add_cflags -utf-8
6729 fi
6730
6731 for pfx in "" host_; do
6732     varname=${pfx%_}cc_type
6733     eval "type=\$$varname"
6734     if [ "$type" = "msvc" ]; then
6735         test_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6736 static inline int foo(int a) { return a; }
6737 EOF
6738     fi
6739 done
6740
6741 case $as_type in
6742     clang)
6743         add_asflags -Qunused-arguments
6744     ;;
6745 esac
6746
6747 case $ld_type in
6748     clang)
6749         check_ldflags -Qunused-arguments
6750     ;;
6751 esac
6752
6753 enable frame_thread_encoder
6754
6755 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6756
6757 check_deps $CONFIG_LIST       \
6758            $CONFIG_EXTRA      \
6759            $HAVE_LIST         \
6760            $ALL_COMPONENTS    \
6761
6762 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"
6763 enabled avresample && warn "Building with deprecated library libavresample"
6764
6765 if test $target_os = "haiku"; then
6766     disable memalign
6767     disable posix_memalign
6768 fi
6769
6770 flatten_extralibs(){
6771     nested_entries=
6772     list_name=$1
6773     eval list=\$${1}
6774     for entry in $list; do
6775         entry_copy=$entry
6776         resolve entry_copy
6777         flat_entries=
6778         for e in $entry_copy; do
6779             case $e in
6780                 *_extralibs) nested_entries="$nested_entries$e ";;
6781                           *) flat_entries="$flat_entries$e ";;
6782             esac
6783         done
6784         eval $entry="\$flat_entries"
6785     done
6786     append $list_name "$nested_entries"
6787
6788     resolve nested_entries
6789     if test -n "$(filter '*_extralibs' $nested_entries)"; then
6790         flatten_extralibs $list_name
6791     fi
6792 }
6793
6794 flatten_extralibs_wrapper(){
6795     list_name=$1
6796     flatten_extralibs $list_name
6797     unique $list_name
6798     resolve $list_name
6799     eval $list_name=\$\(\$ldflags_filter \$$list_name\)
6800     eval printf \''%s'\' \""\$$list_name"\"
6801 }
6802
6803 for linkunit in $LIBRARY_LIST; do
6804     unset current_extralibs
6805     eval components=\$$(toupper ${linkunit})_COMPONENTS_LIST
6806     for comp in ${components}; do
6807         enabled $comp || continue
6808         comp_extralibs="${comp}_extralibs"
6809         append current_extralibs $comp_extralibs
6810     done
6811     eval prepend ${linkunit}_extralibs $current_extralibs
6812 done
6813
6814 for linkunit in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
6815     eval ${linkunit}_extralibs=\$\(flatten_extralibs_wrapper ${linkunit}_extralibs\)
6816 done
6817
6818 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6819
6820 for thread in $THREADS_LIST; do
6821     if enabled $thread; then
6822         test -n "$thread_type" &&
6823             die "ERROR: Only one thread type must be selected." ||
6824             thread_type="$thread"
6825     fi
6826 done
6827
6828 if disabled stdatomic; then
6829     if enabled atomics_gcc; then
6830         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6831     elif enabled atomics_win32; then
6832         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6833     elif enabled atomics_suncc; then
6834         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6835     elif enabled pthreads; then
6836         add_compat atomics/pthread/stdatomic.o
6837         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6838     else
6839         enabled threads && die "Threading is enabled, but no atomics are available"
6840         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6841     fi
6842 fi
6843
6844 # Check if requested libraries were found.
6845 for lib in $AUTODETECT_LIBS; do
6846     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6847 done
6848
6849 enabled zlib && add_cppflags -DZLIB_CONST
6850
6851 # conditional library dependencies, in any order
6852 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6853 enabled afir_filter         && prepend avfilter_deps "avcodec"
6854 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6855 enabled aresample_filter    && prepend avfilter_deps "swresample"
6856 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6857 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6858 enabled convolve_filter     && prepend avfilter_deps "avcodec"
6859 enabled deconvolve_filter   && prepend avfilter_deps "avcodec"
6860 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6861 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6862 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6863 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6864 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
6865 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6866 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6867 enabled pan_filter          && prepend avfilter_deps "swresample"
6868 enabled pp_filter           && prepend avfilter_deps "postproc"
6869 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6870 enabled resample_filter && prepend avfilter_deps "avresample"
6871 enabled sab_filter          && prepend avfilter_deps "swscale"
6872 enabled scale_filter    && prepend avfilter_deps "swscale"
6873 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6874 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6875 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6876 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6877 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6878 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
6879 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6880 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6881 enabled spp_filter          && prepend avfilter_deps "avcodec"
6882 enabled sr_filter           && prepend avfilter_deps "avformat swscale"
6883 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6884 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6885 enabled zoompan_filter      && prepend avfilter_deps "swscale"
6886
6887 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6888
6889 #FIXME
6890 enabled sdl2_outdev     && add_cflags $(filter_out '-Dmain=SDL_main' $sdl2_cflags)
6891
6892 enabled opus_decoder    && prepend avcodec_deps "swresample"
6893
6894 # reorder the items at var $1 to align with the items order at var $2 .
6895 # die if an item at $1 is not at $2 .
6896 reorder_by(){
6897     eval rb_in=\$$1
6898     eval rb_ordered=\$$2
6899
6900     for rb in $rb_in; do
6901         is_in $rb $rb_ordered || die "$rb at \$$1 is not at \$$2"
6902     done
6903
6904     rb_out=
6905     for rb in $rb_ordered; do
6906         is_in $rb $rb_in && rb_out="$rb_out$rb "
6907     done
6908     eval $1=\$rb_out
6909 }
6910
6911 # deps-expand fflib $1:  N x {append all expanded deps; unique}
6912 # within a set of N items, N expansions are enough to expose a cycle.
6913 expand_deps(){
6914     unique ${1}_deps  # required for the early break test.
6915     for dummy in $LIBRARY_LIST; do  # N iteratios
6916         eval deps=\$${1}_deps
6917         append ${1}_deps $(map 'eval echo \$${v}_deps' $deps)
6918         unique ${1}_deps
6919         eval '[ ${#deps} = ${#'${1}_deps'} ]' && break  # doesn't expand anymore
6920     done
6921
6922     eval is_in $1 \$${1}_deps && die "Dependency cycle at ${1}_deps"
6923     reorder_by ${1}_deps LIBRARY_LIST  # linking order is expected later
6924 }
6925
6926 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6927 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6928
6929 map 'expand_deps $v' $LIBRARY_LIST
6930
6931 if test "$quiet" != "yes"; then
6932
6933 echo "install prefix            $prefix"
6934 echo "source path               $source_path"
6935 echo "C compiler                $cc"
6936 echo "C library                 $libc_type"
6937 if test "$host_cc" != "$cc"; then
6938     echo "host C compiler           $host_cc"
6939     echo "host C library            $host_libc_type"
6940 fi
6941 echo "ARCH                      $arch ($cpu)"
6942 if test "$build_suffix" != ""; then
6943     echo "build suffix              $build_suffix"
6944 fi
6945 if test "$progs_suffix" != ""; then
6946     echo "progs suffix              $progs_suffix"
6947 fi
6948 if test "$extra_version" != ""; then
6949     echo "version string suffix     $extra_version"
6950 fi
6951 echo "big-endian                ${bigendian-no}"
6952 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6953 if enabled x86; then
6954     echo "standalone assembly       ${x86asm-no}"
6955     echo "x86 assembler             ${x86asmexe}"
6956     echo "MMX enabled               ${mmx-no}"
6957     echo "MMXEXT enabled            ${mmxext-no}"
6958     echo "3DNow! enabled            ${amd3dnow-no}"
6959     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6960     echo "SSE enabled               ${sse-no}"
6961     echo "SSSE3 enabled             ${ssse3-no}"
6962     echo "AESNI enabled             ${aesni-no}"
6963     echo "AVX enabled               ${avx-no}"
6964     echo "AVX2 enabled              ${avx2-no}"
6965     echo "AVX-512 enabled           ${avx512-no}"
6966     echo "XOP enabled               ${xop-no}"
6967     echo "FMA3 enabled              ${fma3-no}"
6968     echo "FMA4 enabled              ${fma4-no}"
6969     echo "i686 features enabled     ${i686-no}"
6970     echo "CMOV is fast              ${fast_cmov-no}"
6971     echo "EBX available             ${ebx_available-no}"
6972     echo "EBP available             ${ebp_available-no}"
6973 fi
6974 if enabled aarch64; then
6975     echo "NEON enabled              ${neon-no}"
6976     echo "VFP enabled               ${vfp-no}"
6977 fi
6978 if enabled arm; then
6979     echo "ARMv5TE enabled           ${armv5te-no}"
6980     echo "ARMv6 enabled             ${armv6-no}"
6981     echo "ARMv6T2 enabled           ${armv6t2-no}"
6982     echo "VFP enabled               ${vfp-no}"
6983     echo "NEON enabled              ${neon-no}"
6984     echo "THUMB enabled             ${thumb-no}"
6985 fi
6986 if enabled mips; then
6987     echo "MIPS FPU enabled          ${mipsfpu-no}"
6988     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6989     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6990     echo "MIPS MSA enabled          ${msa-no}"
6991     echo "LOONGSON MMI enabled      ${mmi-no}"
6992 fi
6993 if enabled ppc; then
6994     echo "AltiVec enabled           ${altivec-no}"
6995     echo "VSX enabled               ${vsx-no}"
6996     echo "POWER8 enabled            ${power8-no}"
6997     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6998     echo "dcbzl available           ${dcbzl-no}"
6999 fi
7000 echo "debug symbols             ${debug-no}"
7001 echo "strip symbols             ${stripping-no}"
7002 echo "optimize for size         ${small-no}"
7003 echo "optimizations             ${optimizations-no}"
7004 echo "static                    ${static-no}"
7005 echo "shared                    ${shared-no}"
7006 echo "postprocessing support    ${postproc-no}"
7007 echo "network support           ${network-no}"
7008 echo "threading support         ${thread_type-no}"
7009 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
7010 echo "texi2html enabled         ${texi2html-no}"
7011 echo "perl enabled              ${perl-no}"
7012 echo "pod2man enabled           ${pod2man-no}"
7013 echo "makeinfo enabled          ${makeinfo-no}"
7014 echo "makeinfo supports HTML    ${makeinfo_html-no}"
7015 test -n "$random_seed" &&
7016     echo "random seed               ${random_seed}"
7017 echo
7018
7019 echo "External libraries:"
7020 print_enabled '' $EXTERNAL_LIBRARY_LIST $EXTERNAL_AUTODETECT_LIBRARY_LIST | print_in_columns
7021 echo
7022
7023 echo "External libraries providing hardware acceleration:"
7024 print_enabled '' $HWACCEL_LIBRARY_LIST $HWACCEL_AUTODETECT_LIBRARY_LIST | print_in_columns
7025 echo
7026
7027 echo "Libraries:"
7028 print_enabled '' $LIBRARY_LIST | print_in_columns
7029 echo
7030
7031 echo "Programs:"
7032 print_enabled '' $PROGRAM_LIST | print_in_columns
7033 echo
7034
7035 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
7036     echo "Enabled ${type}s:"
7037     eval list=\$$(toupper $type)_LIST
7038     print_enabled '_*' $list | print_in_columns
7039     echo
7040 done
7041
7042 if test -n "$ignore_tests"; then
7043     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
7044     echo "Ignored FATE tests:"
7045     echo $ignore_tests | print_in_columns
7046     echo
7047 fi
7048
7049 echo "License: $license"
7050
7051 fi # test "$quiet" != "yes"
7052
7053 if test -n "$WARNINGS"; then
7054     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
7055     enabled fatal_warnings && exit 1
7056 fi
7057
7058 test -e Makefile || echo "include $source_path/Makefile" > Makefile
7059
7060 esc(){
7061     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
7062 }
7063
7064 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
7065
7066 enabled stripping || strip="echo skipping strip"
7067 enabled stripping || striptype=""
7068
7069 config_files="$TMPH ffbuild/config.mak doc/config.texi"
7070
7071 cat > ffbuild/config.mak <<EOF
7072 # Automatically generated by configure - do not modify!
7073 ifndef FFMPEG_CONFIG_MAK
7074 FFMPEG_CONFIG_MAK=1
7075 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
7076 prefix=$prefix
7077 LIBDIR=\$(DESTDIR)$libdir
7078 SHLIBDIR=\$(DESTDIR)$shlibdir
7079 INCDIR=\$(DESTDIR)$incdir
7080 BINDIR=\$(DESTDIR)$bindir
7081 DATADIR=\$(DESTDIR)$datadir
7082 DOCDIR=\$(DESTDIR)$docdir
7083 MANDIR=\$(DESTDIR)$mandir
7084 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
7085 INSTALL_NAME_DIR=$install_name_dir
7086 SRC_PATH=$source_path
7087 SRC_LINK=$source_link
7088 ifndef MAIN_MAKEFILE
7089 SRC_PATH:=\$(SRC_PATH:.%=..%)
7090 endif
7091 CC_IDENT=$cc_ident
7092 ARCH=$arch
7093 INTRINSICS=$intrinsics
7094 EXTERN_PREFIX=$extern_prefix
7095 CC=$cc
7096 CXX=$cxx
7097 AS=$as
7098 OBJCC=$objcc
7099 LD=$ld
7100 DEPCC=$dep_cc
7101 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
7102 DEPAS=$as
7103 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
7104 X86ASM=$x86asmexe
7105 DEPX86ASM=$x86asmexe
7106 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
7107 AR=$ar
7108 ARFLAGS=$arflags
7109 AR_O=$ar_o
7110 AR_CMD=$ar
7111 NM_CMD=$nm
7112 RANLIB=$ranlib
7113 STRIP=$strip
7114 STRIPTYPE=$striptype
7115 NVCC=$nvcc
7116 CP=cp -p
7117 LN_S=$ln_s
7118 CPPFLAGS=$CPPFLAGS
7119 CFLAGS=$CFLAGS
7120 CXXFLAGS=$CXXFLAGS
7121 OBJCFLAGS=$OBJCFLAGS
7122 ASFLAGS=$ASFLAGS
7123 NVCCFLAGS=$nvccflags
7124 AS_C=$AS_C
7125 AS_O=$AS_O
7126 OBJCC_C=$OBJCC_C
7127 OBJCC_E=$OBJCC_E
7128 OBJCC_O=$OBJCC_O
7129 CC_C=$CC_C
7130 CC_E=$CC_E
7131 CC_O=$CC_O
7132 CXX_C=$CXX_C
7133 CXX_O=$CXX_O
7134 NVCC_C=$NVCC_C
7135 NVCC_O=$NVCC_O
7136 LD_O=$LD_O
7137 X86ASM_O=$X86ASM_O
7138 LD_LIB=$LD_LIB
7139 LD_PATH=$LD_PATH
7140 DLLTOOL=$dlltool
7141 WINDRES=$windres
7142 DEPWINDRES=$dep_cc
7143 DOXYGEN=$doxygen
7144 LDFLAGS=$LDFLAGS
7145 LDEXEFLAGS=$LDEXEFLAGS
7146 LDSOFLAGS=$LDSOFLAGS
7147 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
7148 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
7149 X86ASMFLAGS=$X86ASMFLAGS
7150 BUILDSUF=$build_suffix
7151 PROGSSUF=$progs_suffix
7152 FULLNAME=$FULLNAME
7153 LIBPREF=$LIBPREF
7154 LIBSUF=$LIBSUF
7155 LIBNAME=$LIBNAME
7156 SLIBPREF=$SLIBPREF
7157 SLIBSUF=$SLIBSUF
7158 EXESUF=$EXESUF
7159 EXTRA_VERSION=$extra_version
7160 CCDEP=$CCDEP
7161 CXXDEP=$CXXDEP
7162 CCDEP_FLAGS=$CCDEP_FLAGS
7163 ASDEP=$ASDEP
7164 ASDEP_FLAGS=$ASDEP_FLAGS
7165 X86ASMDEP=$X86ASMDEP
7166 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
7167 CC_DEPFLAGS=$CC_DEPFLAGS
7168 AS_DEPFLAGS=$AS_DEPFLAGS
7169 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
7170 HOSTCC=$host_cc
7171 HOSTLD=$host_ld
7172 HOSTCFLAGS=$host_cflags
7173 HOSTCPPFLAGS=$host_cppflags
7174 HOSTEXESUF=$HOSTEXESUF
7175 HOSTLDFLAGS=$host_ldflags
7176 HOSTEXTRALIBS=$host_extralibs
7177 DEPHOSTCC=$host_cc
7178 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
7179 HOSTCCDEP=$HOSTCCDEP
7180 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
7181 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
7182 HOSTCC_C=$HOSTCC_C
7183 HOSTCC_O=$HOSTCC_O
7184 HOSTLD_O=$HOSTLD_O
7185 TARGET_EXEC=$target_exec $target_exec_args
7186 TARGET_PATH=$target_path
7187 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
7188 CFLAGS-ffplay=${sdl2_cflags}
7189 CFLAGS_HEADERS=$CFLAGS_HEADERS
7190 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
7191 EXTRALIBS=$extralibs
7192 COMPAT_OBJS=$compat_objs
7193 INSTALL=$install
7194 LIBTARGET=${LIBTARGET}
7195 SLIBNAME=${SLIBNAME}
7196 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
7197 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
7198 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
7199 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
7200 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
7201 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
7202 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
7203 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
7204 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
7205 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
7206 NOREDZONE_FLAGS=$noredzone_flags
7207 LIBFUZZER_PATH=$libfuzzer_path
7208 IGNORE_TESTS=$ignore_tests
7209 EOF
7210
7211 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
7212
7213 for entry in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
7214     eval echo "EXTRALIBS-${entry}=\$${entry}_extralibs" >> ffbuild/config.mak
7215 done
7216
7217 cat > $TMPH <<EOF
7218 /* Automatically generated by configure - do not modify! */
7219 #ifndef FFMPEG_CONFIG_H
7220 #define FFMPEG_CONFIG_H
7221 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
7222 #define FFMPEG_LICENSE "$(c_escape $license)"
7223 #define CONFIG_THIS_YEAR 2018
7224 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
7225 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
7226 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
7227 #define av_restrict $restrict_keyword
7228 #define EXTERN_PREFIX "${extern_prefix}"
7229 #define EXTERN_ASM ${extern_prefix}
7230 #define BUILDSUF "$build_suffix"
7231 #define SLIBSUF "$SLIBSUF"
7232 #define HAVE_MMX2 HAVE_MMXEXT
7233 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
7234 EOF
7235
7236 test -n "$assert_level" &&
7237     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
7238
7239 test -n "$malloc_prefix" &&
7240     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
7241
7242 if enabled x86asm; then
7243     append config_files $TMPASM
7244     cat > $TMPASM <<EOF
7245 ; Automatically generated by configure - do not modify!
7246 EOF
7247 fi
7248
7249 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
7250
7251
7252 mkdir -p doc
7253 mkdir -p tests
7254 mkdir -p tests/api
7255 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
7256
7257 print_config ARCH_   "$config_files" $ARCH_LIST
7258 print_config HAVE_   "$config_files" $HAVE_LIST
7259 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
7260                                      $CONFIG_EXTRA      \
7261                                      $ALL_COMPONENTS    \
7262
7263 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
7264 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
7265
7266 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
7267 cp_if_changed $TMPH config.h
7268 touch ffbuild/.config
7269
7270 enabled x86asm && cp_if_changed $TMPASM config.asm
7271
7272 cat > $TMPH <<EOF
7273 /* Generated by ffmpeg configure */
7274 #ifndef AVUTIL_AVCONFIG_H
7275 #define AVUTIL_AVCONFIG_H
7276 EOF
7277
7278 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
7279
7280 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
7281
7282 cp_if_changed $TMPH libavutil/avconfig.h
7283
7284 # full_filter_name_foo=vf_foo
7285 # full_filter_name_bar=asrc_bar
7286 # ...
7287 eval "$(sed -n "s/^extern AVFilter ff_\([avfsinkrc]\{2,5\}\)_\(.*\);/full_filter_name_\2=\1_\2/p" $source_path/libavfilter/allfilters.c)"
7288
7289 # generate the lists of enabled components
7290 print_enabled_components(){
7291     file=$1
7292     struct_name=$2
7293     name=$3
7294     shift 3
7295     echo "static const $struct_name * const $name[] = {" > $TMPH
7296     for c in $*; do
7297         if enabled $c; then
7298             case $name in
7299                 filter_list)
7300                     eval c=\$full_filter_name_${c%_filter}
7301                 ;;
7302                 indev_list)
7303                     c=${c%_indev}_demuxer
7304                 ;;
7305                 outdev_list)
7306                     c=${c%_outdev}_muxer
7307                 ;;
7308             esac
7309             printf "    &ff_%s,\n" $c >> $TMPH
7310         fi
7311     done
7312     if [ "$name" = "filter_list" ]; then
7313         for c in asrc_abuffer vsrc_buffer asink_abuffer vsink_buffer; do
7314             printf "    &ff_%s,\n" $c >> $TMPH
7315         done
7316     fi
7317     echo "    NULL };" >> $TMPH
7318     cp_if_changed $TMPH $file
7319 }
7320
7321 print_enabled_components libavfilter/filter_list.c AVFilter filter_list $FILTER_LIST
7322 print_enabled_components libavcodec/codec_list.c AVCodec codec_list $CODEC_LIST
7323 print_enabled_components libavcodec/parser_list.c AVCodecParser parser_list $PARSER_LIST
7324 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
7325 print_enabled_components libavformat/demuxer_list.c AVInputFormat demuxer_list $DEMUXER_LIST
7326 print_enabled_components libavformat/muxer_list.c AVOutputFormat muxer_list $MUXER_LIST
7327 print_enabled_components libavdevice/indev_list.c AVInputFormat indev_list $INDEV_LIST
7328 print_enabled_components libavdevice/outdev_list.c AVOutputFormat outdev_list $OUTDEV_LIST
7329 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
7330
7331 # Settings for pkg-config files
7332
7333 cat > $TMPH <<EOF
7334 # Automatically generated by configure - do not modify!
7335 shared=$shared
7336 build_suffix=$build_suffix
7337 prefix=$prefix
7338 libdir=$libdir
7339 incdir=$incdir
7340 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
7341 source_path=${source_path}
7342 LIBPREF=${LIBPREF}
7343 LIBSUF=${LIBSUF}
7344 extralibs_avutil="$avutil_extralibs"
7345 extralibs_avcodec="$avcodec_extralibs"
7346 extralibs_avformat="$avformat_extralibs"
7347 extralibs_avdevice="$avdevice_extralibs"
7348 extralibs_avfilter="$avfilter_extralibs"
7349 extralibs_avresample="$avresample_extralibs"
7350 extralibs_postproc="$postproc_extralibs"
7351 extralibs_swscale="$swscale_extralibs"
7352 extralibs_swresample="$swresample_extralibs"
7353 EOF
7354
7355 for lib in $LIBRARY_LIST; do
7356     lib_deps="$(eval echo \$${lib}_deps)"
7357     echo ${lib}_deps=\"$lib_deps\" >> $TMPH
7358 done
7359
7360 cp_if_changed $TMPH ffbuild/config.sh